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openwrt-xburst/target/linux/olpc/patches-2.6.24/100-olpc.patch

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Adding .24 support for olpc kernel compiles fine, but graphic support is broken to test new kernel version, change target/linux/olpc/Makefile from .23.16 to .24 git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10493 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-02-19 06:03:49 +02:00
diff -purN linux_2.6.24_org/arch/x86/Kconfig linux_2.6.24_olpc/arch/x86/Kconfig
--- linux_2.6.24_org/arch/x86/Kconfig 2008-02-15 20:11:57.000000000 +0000
+++ linux_2.6.24_olpc/arch/x86/Kconfig 2008-02-15 18:59:21.000000000 +0000
@@ -1415,6 +1415,9 @@ config PCI_GODIRECT
config PCI_GOANY
bool "Any"
+config PCI_GOOLPC
+ bool "OLPC"
+
endchoice
config PCI_BIOS
@@ -1425,7 +1428,7 @@ config PCI_BIOS
# x86-64 doesn't support PCI BIOS access from long mode so always go direct.
config PCI_DIRECT
bool
- depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY) || X86_VISWS)
+ depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY || PCI_GOOLPC) || X86_VISWS)
default y
config PCI_MMCONFIG
@@ -1442,6 +1445,11 @@ config PCI_MMCONFIG
bool "Support mmconfig PCI config space access"
depends on X86_64 && PCI && ACPI
+config PCI_OLPC
+ bool
+ depends on PCI && PCI_GOOLPC
+ default y
+
config DMAR
bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
depends on X86_64 && PCI_MSI && ACPI && EXPERIMENTAL
@@ -1561,6 +1569,21 @@ config K8_NB
def_bool y
depends on AGP_AMD64 || (X86_64 && (GART_IOMMU || (PCI && NUMA)))
+config OLPC
+ bool "OLPC Support"
+ default n
+ help
+ Add OLPC Support
+
+config OLPC_PM
+ bool "OLPC power management support"
+ default n
+ depends on OLPC
+
+config OPEN_FIRMWARE
+ bool "Support for Open Firmware"
+ default y if OLPC
+
source "drivers/pcmcia/Kconfig"
source "drivers/pci/hotplug/Kconfig"
diff -purN linux_2.6.24_org/arch/x86/kernel/Makefile_32 linux_2.6.24_olpc/arch/x86/kernel/Makefile_32
--- linux_2.6.24_org/arch/x86/kernel/Makefile_32 2008-02-15 20:11:58.000000000 +0000
+++ linux_2.6.24_olpc/arch/x86/kernel/Makefile_32 2008-02-15 18:59:25.000000000 +0000
@@ -49,6 +49,13 @@ obj-y += pcspeaker.o
obj-$(CONFIG_SCx200) += scx200_32.o
+obj-$(CONFIG_OLPC) += olpc.o
+obj-$(CONFIG_OLPC_PM) += olpc-pm.o olpc-wakeup.o
+obj-$(CONFIG_OPEN_FIRMWARE) += ofw.o
+obj-$(PROM_FS) += promfs.o
+
+
+
# vsyscall_32.o contains the vsyscall DSO images as __initdata.
# We must build both images before we can assemble it.
# Note: kbuild does not track this dependency due to usage of .incbin
diff -purN linux_2.6.24_org/arch/x86/kernel/ofw.c linux_2.6.24_olpc/arch/x86/kernel/ofw.c
--- linux_2.6.24_org/arch/x86/kernel/ofw.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/arch/x86/kernel/ofw.c 2008-02-15 18:59:25.000000000 +0000
@@ -0,0 +1,100 @@
+/*
+ * ofw.c - Open Firmware client interface for 32-bit systems.
+ * This code is intended to be portable to any 32-bit Open Firmware
+ * implementation with a standard client interface that can be
+ * called when Linux is running.
+ *
+ * Copyright (C) 2007 Mitch Bradley <wmb@firmworks.com>
+ * Copyright (C) 2007 Andres Salomon <dilinger@debian.org>
+ */
+
+#include <stdarg.h>
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <asm/ofw.h>
+
+
+int (*call_firmware)(int *);
+
+static DEFINE_SPINLOCK(prom_lock);
+
+#define MAXARGS 20
+
+/*
+ * The return value from ofw() in all cases is 0 if the attempt to call the
+ * function succeeded, <0 otherwise. That return value is from the
+ * gateway function only. Any results from the called function are returned
+ * via output argument pointers.
+ *
+ * Here are call templates for all the standard OFW client services:
+ *
+ * ofw("test", 1, 1, namestr, &missing);
+ * ofw("peer", 1, 1, phandle, &sibling_phandle);
+ * ofw("child", 1, 1, phandle, &child_phandle);
+ * ofw("parent", 1, 1, phandle, &parent_phandle);
+ * ofw("instance_to_package", 1, 1, ihandle, &phandle);
+ * ofw("getproplen", 2, 1, phandle, namestr, &proplen);
+ * ofw("getprop", 4, 1, phandle, namestr, bufaddr, buflen, &size);
+ * ofw("nextprop", 3, 1, phandle, previousstr, bufaddr, &flag);
+ * ofw("setprop", 4, 1, phandle, namestr, bufaddr, len, &size);
+ * ofw("canon", 3, 1, devspecstr, bufaddr, buflen, &length);
+ * ofw("finddevice", 1, 1, devspecstr, &phandle);
+ * ofw("instance-to-path", 3, 1, ihandle, bufaddr, buflen, &length);
+ * ofw("package-to-path", 3, 1, phandle, bufaddr, buflen, &length);
+ * ofw("call_method", numin, numout, in0, in1, ..., &out0, &out1, ...);
+ * ofw("open", 1, 1, devspecstr, &ihandle);
+ * ofw("close", 1, 0, ihandle);
+ * ofw("read", 3, 1, ihandle, addr, len, &actual);
+ * ofw("write", 3, 1, ihandle, addr, len, &actual);
+ * ofw("seek", 3, 1, ihandle, pos_hi, pos_lo, &status);
+ * ofw("claim", 3, 1, virtaddr, size, align, &baseaddr);
+ * ofw("release", 2, 0, virtaddr, size);
+ * ofw("boot", 1, 0, bootspecstr);
+ * ofw("enter", 0, 0);
+ * ofw("exit", 0, 0);
+ * ofw("chain", 5, 0, virtaddr, size, entryaddr, argsaddr, len);
+ * ofw("interpret", numin+1, numout+1, cmdstr, in0, ..., &catchres, &out0, ...);
+ * ofw("set-callback", 1, 1, newfuncaddr, &oldfuncaddr);
+ * ofw("set-symbol-lookup", 2, 0, symtovaladdr, valtosymaddr);
+ * ofw("milliseconds", 0, 1, &ms);
+ */
+
+int ofw(char *name, int numargs, int numres, ...)
+{
+ va_list ap;
+ int argarray[MAXARGS+3];
+ int argnum = 3;
+ int retval;
+ int *intp;
+ unsigned long flags;
+
+ if (!call_firmware)
+ return -1;
+ if ((numargs + numres) > MAXARGS)
+ return -1; /* spit out an error? */
+
+ argarray[0] = (int) name;
+ argarray[1] = numargs;
+ argarray[2] = numres;
+
+ va_start(ap, numres);
+ while (numargs) {
+ argarray[argnum++] = va_arg(ap, int);
+ numargs--;
+ }
+
+ spin_lock_irqsave(&prom_lock, flags);
+ retval = call_firmware(argarray);
+ spin_unlock_irqrestore(&prom_lock, flags);
+
+ if (retval == 0) {
+ while (numres) {
+ intp = va_arg(ap, int *);
+ *intp = argarray[argnum++];
+ numres--;
+ }
+ }
+ va_end(ap);
+ return retval;
+}
+EXPORT_SYMBOL(ofw);
diff -purN linux_2.6.24_org/arch/x86/kernel/olpc.c linux_2.6.24_olpc/arch/x86/kernel/olpc.c
--- linux_2.6.24_org/arch/x86/kernel/olpc.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/arch/x86/kernel/olpc.c 2008-02-15 18:59:25.000000000 +0000
@@ -0,0 +1,287 @@
+/* Support for the OLPC DCON and OLPC EC access
+ * Copyright (C) 2006, Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/autoconf.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mc146818rtc.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+
+#include <asm/olpc.h>
+#include <asm/ofw.h>
+
+/* This is our new multi-purpose structure used to contain the
+ * information about the platform that we detect
+ */
+
+struct olpc_platform_t olpc_platform_info;
+EXPORT_SYMBOL_GPL(olpc_platform_info);
+
+/*********************************************************************
+ * EC locking and access
+ *********************************************************************/
+
+static DEFINE_SPINLOCK(ec_lock);
+
+/* what the timeout *should* be (in ms) */
+#define EC_BASE_TIMEOUT 20
+
+/* the timeout that bugs in the EC might force us to actually use */
+static int ec_timeout = EC_BASE_TIMEOUT;
+
+static int __init olpc_ec_timeout_set(char *str)
+{
+ if (get_option(&str, &ec_timeout) != 1) {
+ ec_timeout = EC_BASE_TIMEOUT;
+ printk(KERN_ERR "olpc-ec: invalid argument to "
+ "'olpc_ec_timeout=', ignoring!\n");
+ }
+ printk(KERN_DEBUG "olpc-ec: using %d ms delay for EC commands.\n",
+ ec_timeout);
+ return 1;
+}
+__setup("olpc_ec_timeout=", olpc_ec_timeout_set);
+
+/*
+ * These *bf_status functions return whether the buffers are full or not.
+ */
+
+static inline unsigned int ibf_status(unsigned int port)
+{
+ return !!(inb(port) & 0x02);
+}
+
+static inline unsigned int obf_status(unsigned int port)
+{
+ return inb(port) & 0x01;
+}
+
+#define wait_on_ibf(p, d) __wait_on_ibf(__LINE__, (p), (d))
+static int __wait_on_ibf(unsigned int line, unsigned int port, int desired)
+{
+ unsigned int timeo;
+ int state = ibf_status(port);
+
+ for (timeo = ec_timeout; state != desired && timeo; timeo--) {
+ mdelay(1);
+ state = ibf_status(port);
+ }
+
+ if ((state == desired) && (ec_timeout > EC_BASE_TIMEOUT) &&
+ timeo < (ec_timeout - EC_BASE_TIMEOUT)) {
+ printk(KERN_WARNING "olpc-ec: %d: waited %u ms for IBF!\n",
+ line, ec_timeout - timeo);
+ }
+
+ return !(state == desired);
+}
+
+#define wait_on_obf(p, d) __wait_on_obf(__LINE__, (p), (d))
+static int __wait_on_obf(unsigned int line, unsigned int port, int desired)
+{
+ unsigned int timeo;
+ int state = obf_status(port);
+
+ for (timeo = ec_timeout; state != desired && timeo; timeo--) {
+ mdelay(1);
+ state = obf_status(port);
+ }
+
+ if ((state == desired) && (ec_timeout > EC_BASE_TIMEOUT) &&
+ timeo < (ec_timeout - EC_BASE_TIMEOUT)) {
+ printk(KERN_WARNING "olpc-ec: %d: waited %u ms for OBF!\n",
+ line, ec_timeout - timeo);
+ }
+
+ return !(state == desired);
+}
+
+int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
+ unsigned char *outbuf, size_t outlen)
+{
+ unsigned long flags;
+ int ret = -EIO;
+ int i;
+
+ spin_lock_irqsave(&ec_lock, flags);
+
+ /* Clear OBF */
+ for (i = 0; i < 10 && (obf_status(0x6c) == 1); i++)
+ inb(0x68);
+ if (i == 10) {
+ printk(KERN_ERR "olpc-ec: timeout while attempting to "
+ "clear OBF flag!\n");
+ goto err;
+ }
+
+ if (wait_on_ibf(0x6c, 0)) {
+ printk(KERN_ERR "olpc-ec: timeout waiting for EC to "
+ "quiesce!\n");
+ goto err;
+ }
+
+restart:
+ /*
+ * Note that if we time out during any IBF checks, that's a failure;
+ * we have to return. There's no way for the kernel to clear that.
+ *
+ * If we time out during an OBF check, we can restart the command;
+ * reissuing it will clear the OBF flag, and we should be alright.
+ * The OBF flag will sometimes misbehave due to what we believe
+ * is a hardware quirk..
+ */
+ printk(KERN_DEBUG "olpc-ec: running cmd 0x%x\n", cmd);
+ outb(cmd, 0x6c);
+
+ if (wait_on_ibf(0x6c, 0)) {
+ printk(KERN_ERR "olpc-ec: timeout waiting for EC to read "
+ "command!\n");
+ goto err;
+ }
+
+ if (inbuf && inlen) {
+ /* write data to EC */
+ for (i = 0; i < inlen; i++) {
+ if (wait_on_ibf(0x6c, 0)) {
+ printk(KERN_ERR "olpc-ec: timeout waiting for"
+ " EC accept data!\n");
+ goto err;
+ }
+ printk(KERN_DEBUG "olpc-ec: sending cmd arg 0x%x\n",
+ inbuf[i]);
+ outb(inbuf[i], 0x68);
+ }
+ }
+ if (outbuf && outlen) {
+ /* read data from EC */
+ for (i = 0; i < outlen; i++) {
+ if (wait_on_obf(0x6c, 1)) {
+ printk(KERN_ERR "olpc-ec: timeout waiting for"
+ " EC to provide data!\n");
+ goto restart;
+ }
+ outbuf[i] = inb(0x68);
+ printk(KERN_DEBUG "olpc-ec: received 0x%x\n",
+ outbuf[i]);
+ }
+ }
+
+ ret = 0;
+err:
+ spin_unlock_irqrestore(&ec_lock, flags);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(olpc_ec_cmd);
+
+/*********************************************************************
+ * DCON stuff
+ *********************************************************************/
+
+static void __init
+ec_detect(void)
+{
+ olpc_ec_cmd(0x08, NULL, 0, (unsigned char *) &olpc_platform_info.ecver, 1);
+}
+
+/* Check to see if this version of the OLPC board has VSA built
+ * in, and set a flag
+ */
+
+static void __init vsa_detect(void)
+{
+ u16 rev;
+
+ outw(0xFC53, 0xAC1C);
+ outw(0x0003, 0xAC1C);
+
+ rev = inw(0xAC1E);
+
+ if (rev == 0x4132)
+ olpc_platform_info.flags |= OLPC_F_VSA;
+}
+
+static void __init platform_detect(void)
+{
+ size_t propsize;
+ u32 rev;
+
+ if (ofw("getprop", 4, 1, NULL, "board-revision-int", &rev, 4,
+ &propsize) || propsize != 4) {
+ printk(KERN_ERR "ofw: getprop call failed!\n");
+ rev = 0;
+ }
+ olpc_platform_info.boardrev = be32_to_cpu(rev);
+}
+
+static int olpc_dcon_present = -1;
+module_param(olpc_dcon_present, int, 0444);
+
+/* REV_A CMOS map:
+ * bit 440; DCON present bit
+ */
+
+#define OLPC_CMOS_DCON_OFFSET (440 / 8)
+#define OLPC_CMOS_DCON_MASK 0x01
+
+static int __init olpc_init(void)
+{
+ unsigned char *romsig;
+
+ spin_lock_init(&ec_lock);
+
+ romsig = ioremap(0xffffffc0, 16);
+
+ if (!romsig)
+ return 0;
+
+ if (strncmp(romsig, "CL1 Q", 7))
+ goto unmap;
+ if (strncmp(romsig+6, romsig+13, 3)) {
+ printk(KERN_INFO "OLPC BIOS signature looks invalid. Assuming not OLPC\n");
+ goto unmap;
+ }
+ printk(KERN_INFO "OLPC board with OpenFirmware: %.16s\n", romsig);
+
+ olpc_platform_info.flags |= OLPC_F_PRESENT;
+
+ /* Get the platform revision */
+ platform_detect();
+
+ /* If olpc_dcon_present isn't set by the command line, then
+ * "detect" it
+ */
+
+ if (olpc_dcon_present == -1) {
+ /* B1 and greater always has a DCON */
+ if (olpc_board_at_least(olpc_board(0xb1)))
+ olpc_dcon_present = 1;
+ }
+
+ if (olpc_dcon_present)
+ olpc_platform_info.flags |= OLPC_F_DCON;
+
+ /* Get the EC revision */
+ ec_detect();
+
+ /* Check to see if the VSA exists */
+ vsa_detect();
+
+ printk(KERN_INFO "OLPC board revision: %s%X (EC=%x)\n",
+ ((olpc_platform_info.boardrev & 0xf) < 8) ? "pre" : "",
+ olpc_platform_info.boardrev >> 4,
+ olpc_platform_info.ecver);
+
+ unmap:
+ iounmap(romsig);
+
+ return 0;
+}
+
+postcore_initcall(olpc_init);
diff -purN linux_2.6.24_org/arch/x86/kernel/olpc-pm.c linux_2.6.24_olpc/arch/x86/kernel/olpc-pm.c
--- linux_2.6.24_org/arch/x86/kernel/olpc-pm.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/arch/x86/kernel/olpc-pm.c 2008-02-15 18:59:26.000000000 +0000
@@ -0,0 +1,946 @@
+/* olpc-pm.c
+ * © 2006 Red Hat, Inc.
+ * Portions also copyright 2006 Advanced Micro Devices, Inc.
+ * GPLv2
+ */
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/suspend.h>
+#include <linux/bootmem.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+#include <linux/mc146818rtc.h>
+#include <asm/io.h>
+
+#include <asm/olpc.h>
+
+/* A few words about accessing the ACPI and PM registers. Long story short,
+ byte and word accesses of the ACPI and PM registers is broken. The only
+ way to do it really correctly is to use dword accesses, which we do
+ throughout this code. For more details, please consult Eratta 17 and 18
+ here:
+
+ http://www.amd.com/files/connectivitysolutions/geode/geode_gx/34472D_CS5536_B1_specupdate.pdf
+*/
+
+#define PM_IRQ 3
+
+#define CS5536_PM_PWRBTN (1 << 8)
+#define CS5536_PM_RTC (1 << 10)
+#define CS5536_PM_WAK (1 << 15)
+
+#define GPIO_WAKEUP_EC (1 << 31)
+#define GPIO_WAKEUP_LID (1 << 30)
+
+#define PM_MODE_NORMAL 0
+#define PM_MODE_TEST 1
+#define PM_MODE_MAX 2
+
+/* These, and the battery EC commands, should be in an olpc.h. */
+#define EC_WRITE_SCI_MASK 0x1b
+#define EC_READ_SCI_MASK 0x1c
+
+extern void do_olpc_suspend_lowlevel(void);
+
+static struct {
+ unsigned long address;
+ unsigned short segment;
+} ofw_bios_entry = { 0, __KERNEL_CS };
+
+static int olpc_pm_mode = PM_MODE_NORMAL;
+static unsigned long acpi_base;
+static unsigned long pms_base;
+static int sci_irq;
+static int olpc_lid_flag;
+
+static struct input_dev *pm_inputdev;
+static struct input_dev *lid_inputdev;
+static struct input_dev *ebook_inputdev;
+static struct platform_suspend_ops olpc_pm_ops;
+
+static int gpio_wake_events = 0;
+static int ebook_state = -1;
+static u16 olpc_wakeup_mask = 0;
+
+static unsigned int test_timeout = 0;
+static char *wackup_source = "none";
+
+struct platform_device olpc_powerbutton_dev = {
+ .name = "powerbutton",
+ .id = -1,
+};
+
+struct platform_device olpc_lid_dev = {
+ .name = "lid",
+ .id = -1,
+};
+
+static void __init init_ebook_state(void)
+{
+ if (olpc_ec_cmd(0x2a, NULL, 0, (unsigned char *) &ebook_state, 1)) {
+ printk(KERN_WARNING "olpc-pm: failed to get EBOOK state!\n");
+ ebook_state = 0;
+ }
+ ebook_state &= 1;
+
+ /* the input layer needs to know what value to default to as well */
+ input_report_switch(ebook_inputdev, SW_TABLET_MODE, ebook_state);
+ input_sync(ebook_inputdev);
+}
+
+static void (*battery_callback)(unsigned long);
+static DEFINE_SPINLOCK(battery_callback_lock);
+
+/* propagate_events is non-NULL if run from workqueue,
+ NULL when called at init time to flush SCI queue */
+static void process_sci_queue(struct work_struct *propagate_events)
+{
+ unsigned char data = 0;
+ unsigned char battery_events = 0;
+ int ret;
+
+ do {
+ ret = olpc_ec_cmd(0x84, NULL, 0, &data, 1);
+ if (!ret) {
+ printk(KERN_DEBUG "olpc-pm: SCI 0x%x received\n",
+ data);
+
+ if (wackup_source && !strcmp(wackup_source, "sci")) {
+ /*
+ * XXX: in order for this to not be racy, we
+ * need assurance that we will never get
+ * preempted by olpc_do_sleep here!
+ */
+ switch (data) {
+ case EC_SCI_SRC_EMPTY:
+ wackup_source = "empty sci";
+ break;
+ case EC_SCI_SRC_GAME:
+ wackup_source = "key press";
+ break;
+ case EC_SCI_SRC_BATTERY:
+ wackup_source = "battery";
+ break;
+ case EC_SCI_SRC_BATSOC:
+ wackup_source = "battery state change";
+ break;
+ case EC_SCI_SRC_BATERR:
+ wackup_source = "battery error";
+ break;
+ case EC_SCI_SRC_EBOOK:
+ wackup_source = "ebook";
+ break;
+ case EC_SCI_SRC_WLAN:
+ wackup_source = "wlan packet";
+ break;
+ case EC_SCI_SRC_ACPWR:
+ wackup_source = "ac power";
+ break;
+ default:
+ wackup_source = "unknown";
+ }
+ }
+
+ if (data & (EC_SCI_SRC_BATERR | EC_SCI_SRC_BATSOC |
+ EC_SCI_SRC_BATTERY | EC_SCI_SRC_ACPWR))
+ battery_events |= data;
+ else if (data == EC_SCI_SRC_EBOOK) {
+ ebook_state = !ebook_state;
+ if (propagate_events) {
+ input_report_switch(ebook_inputdev,
+ SW_TABLET_MODE, ebook_state);
+ input_sync(ebook_inputdev);
+ }
+ }
+ }
+ } while (data && !ret);
+
+ if (battery_events && battery_callback && propagate_events) {
+ void (*cbk)(unsigned long);
+
+ /* Older EC versions didn't distinguish between AC and battery
+ events */
+ if (olpc_platform_info.ecver < 0x51)
+ battery_events = EC_SCI_SRC_BATTERY | EC_SCI_SRC_ACPWR;
+
+ spin_lock(&battery_callback_lock);
+ cbk = battery_callback;
+ spin_unlock(&battery_callback_lock);
+
+ cbk(battery_events);
+ }
+
+ if (ret)
+ printk(KERN_WARNING "Failed to clear SCI queue!\n");
+}
+
+static DECLARE_WORK(sci_work, process_sci_queue);
+
+void olpc_register_battery_callback(void (*f)(unsigned long))
+{
+ spin_lock(&battery_callback_lock);
+ battery_callback = f;
+ spin_unlock(&battery_callback_lock);
+}
+EXPORT_SYMBOL_GPL(olpc_register_battery_callback);
+
+void olpc_deregister_battery_callback(void)
+{
+ spin_lock(&battery_callback_lock);
+ battery_callback = NULL;
+ spin_unlock(&battery_callback_lock);
+ cancel_work_sync(&sci_work);
+}
+EXPORT_SYMBOL_GPL(olpc_deregister_battery_callback);
+
+
+static int olpc_pm_interrupt(int irq, void *id)
+{
+ uint32_t sts, gpe = 0;
+
+ sts = inl(acpi_base + PM1_STS);
+ outl(sts | 0xFFFF, acpi_base + PM1_STS);
+
+ if (olpc_board_at_least(olpc_board(0xb2))) {
+ gpe = inl(acpi_base + PM_GPE0_STS);
+ outl(0xFFFFFFFF, acpi_base + PM_GPE0_STS);
+ }
+
+ if (sts & CS5536_PM_PWRBTN) {
+ if (!wackup_source)
+ wackup_source = "power button";
+ printk(KERN_DEBUG "olpm-pm: PM_PWRBTN %sevent received\n",
+ sts & CS5536_PM_WAK ? "wakeup " : "");
+ if (!(sts & CS5536_PM_WAK)) {
+ input_report_key(pm_inputdev, KEY_POWER, 1);
+ input_sync(pm_inputdev);
+ /* Do we need to delay this? */
+ input_report_key(pm_inputdev, KEY_POWER, 0);
+ input_sync(pm_inputdev);
+ }
+ }
+
+ if (gpe & GPIO_WAKEUP_EC) {
+ geode_gpio_clear(OLPC_GPIO_ECSCI, GPIO_NEGATIVE_EDGE_STS);
+ if (!wackup_source)
+ wackup_source = "sci";
+ schedule_work(&sci_work);
+ }
+
+ if (gpe & GPIO_WAKEUP_LID) {
+ /* Disable events */
+ geode_gpio_clear(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
+
+ /* Clear the edge */
+
+ if (olpc_lid_flag)
+ geode_gpio_clear(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_EN);
+ else
+ geode_gpio_clear(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_EN);
+
+ /* Clear the status too */
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_STS);
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_STS);
+
+ /* The line is high when the LID is open, but SW_LID
+ * should be high when the LID is closed, so we pass the old
+ * value of olpc_lid_flag
+ */
+
+ input_report_switch(lid_inputdev, SW_LID, olpc_lid_flag);
+ input_sync(lid_inputdev);
+ if (!wackup_source)
+ wackup_source = "lid";
+
+ /* Swap the status */
+ olpc_lid_flag = !olpc_lid_flag;
+
+ if (olpc_lid_flag)
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_EN);
+ else
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_EN);
+
+ /* re-enable the event */
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
+ }
+
+ return IRQ_HANDLED;
+}
+
+int olpc_ec_mask_set(u8 bits)
+{
+ int ret;
+ u8 byte;
+
+ ret = olpc_ec_cmd(EC_READ_SCI_MASK, NULL, 0, &byte, 1);
+ if (ret) {
+ printk(KERN_ERR "olpc-pm: error getting SCI mask: %d\n", ret);
+ return ret;
+ }
+ /* the high bit is unused, if it is ever unset, that is a good sign
+ sign of EC communication corruption! */
+ WARN_ON(!(byte & 0x80));
+
+ byte |= bits;
+ ret = olpc_ec_cmd(EC_WRITE_SCI_MASK, &byte, 1, NULL, 0);
+ if (ret)
+ printk(KERN_ERR "olpc-pm: error setting SCI mask: %d\n", ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(olpc_ec_mask_set);
+
+int olpc_ec_mask_unset(u8 bits)
+{
+ int ret;
+ u8 byte;
+
+ ret = olpc_ec_cmd(EC_READ_SCI_MASK, NULL, 0, &byte, 1);
+ if (ret) {
+ printk(KERN_ERR "olpc-pm: error getting SCI mask: %d\n", ret);
+ return ret;
+ }
+ /* the high bit is unused, if it is ever unset, that is a good sign
+ sign of EC communication corruption! */
+ WARN_ON(!(byte & 0x80));
+
+ byte &= ~bits;
+ ret = olpc_ec_cmd(EC_WRITE_SCI_MASK, &byte, 1, NULL, 0);
+ if (ret)
+ printk(KERN_ERR "olpc-pm: error setting SCI mask: %d\n", ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(olpc_ec_mask_unset);
+
+/*
+ * For now, only support STR. We also don't support suspending on
+ * B1s, due to difficulties with the cafe FPGA.
+ */
+static int olpc_pm_state_valid(suspend_state_t pm_state)
+{
+ if (pm_state == PM_SUSPEND_MEM && olpc_board_at_least(olpc_board(0xb2)))
+ return 1;
+
+ return 0;
+}
+
+/* This is a catchall function for operations that just don't belong
+ * anywhere else. Later we will evaluate if these belong in the
+ * individual device drivers or the firmware.
+ * If you add something to this function, please explain yourself with
+ * a comment.
+ */
+
+extern void gxfb_flatpanel_control(int state);
+
+static u32 gpio_wakeup[2];
+static u64 irq_sources[4];
+static u64 mfgpt_irq_msr, mfgpt_nr_msr;
+
+void olpc_fixup_wakeup(void)
+{
+ u32 base = geode_gpio_base();
+ int i;
+
+ /* Enable the flatpanel sequencing as early as possible, because
+ it takes ~64ms to resume. This probably belongs in the firmware */
+
+ //gxfb_flatpanel_control(1);
+
+ /* Tell the EC to stop inhibiting SCIs */
+ olpc_ec_cmd(0x34, NULL, 0, NULL, 0);
+
+ /* Restore the interrupt sources */
+ wrmsrl(MSR_PIC_YSEL_LOW, irq_sources[0]);
+ wrmsrl(MSR_PIC_ZSEL_LOW, irq_sources[1]);
+ wrmsrl(MSR_PIC_YSEL_HIGH, irq_sources[2]);
+ wrmsrl(MSR_PIC_ZSEL_HIGH, irq_sources[3]);
+
+ /* Restore the X and Y sources for GPIO */
+ outl(gpio_wakeup[0], base + GPIO_MAP_X);
+ outl(gpio_wakeup[1], base + GPIO_MAP_Y);
+
+ /* Resture the MFGPT MSRs */
+ wrmsrl(MFGPT_IRQ_MSR, mfgpt_irq_msr);
+ wrmsrl(MFGPT_NR_MSR, mfgpt_nr_msr);
+
+ for (i=0;i<2;i++) {
+ /* tell the wireless module to restart USB communication */
+ olpc_ec_cmd(0x24, NULL, 0, NULL, 0);
+ }
+
+ /* Turn all events on */
+ olpc_ec_mask_set(EC_SCI_SRC_ALL);
+}
+
+void olpc_fixup_sleep(void)
+{
+ u32 base = geode_gpio_base();
+ int i;
+
+ /* Save the X and Y sources for GPIO */
+ gpio_wakeup[0] = inl(base + GPIO_MAP_X);
+ gpio_wakeup[1] = inl(base + GPIO_MAP_Y);
+
+ /* Save the Y and Z unrestricted sources */
+
+ rdmsrl(MSR_PIC_YSEL_LOW, irq_sources[0]);
+ rdmsrl(MSR_PIC_ZSEL_LOW, irq_sources[1]);
+ rdmsrl(MSR_PIC_YSEL_HIGH, irq_sources[2]);
+ rdmsrl(MSR_PIC_ZSEL_HIGH, irq_sources[3]);
+
+ /* Turn off the MFGPT timers on the way down */
+
+ for(i = 0; i < 8; i++) {
+ u32 val = geode_mfgpt_read(i, MFGPT_REG_SETUP);
+
+ if (val & MFGPT_SETUP_SETUP) {
+ val &= ~MFGPT_SETUP_CNTEN;
+ geode_mfgpt_write(i, MFGPT_REG_SETUP, val);
+ }
+ }
+
+ /* Save the MFGPT MSRs */
+ rdmsrl(MFGPT_IRQ_MSR, mfgpt_irq_msr);
+ rdmsrl(MFGPT_NR_MSR, mfgpt_nr_msr);
+
+ if (device_may_wakeup(&olpc_powerbutton_dev.dev))
+ olpc_wakeup_mask |= CS5536_PM_PWRBTN;
+ else
+ olpc_wakeup_mask &= ~(CS5536_PM_PWRBTN);
+
+ if (device_may_wakeup(&olpc_lid_dev.dev)) {
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
+ gpio_wake_events |= GPIO_WAKEUP_LID;
+ } else {
+ geode_gpio_clear(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
+ gpio_wake_events &= ~(GPIO_WAKEUP_LID);
+ }
+
+ /* We don't want to wake up on superfluous events */
+ olpc_ec_mask_unset(EC_SCI_SRC_BATSOC | EC_SCI_SRC_ACPWR);
+
+ /*
+ * Cmd 0x32 tells the EC that we're going into suspend; this was
+ * added to work around hardware races related to SCI events. This
+ * should cause the EC to inhibit further SCIs while MAIN_ON is
+ * transitioning low.
+ *
+ * There's also some sort of EC race whereby the EC gets its
+ * IBF/OBF flags confused and all future communication (after
+ * resuming) fails if we suspend too soon after updating
+ * the EC SCI mask. Having this command after updating the
+ * SCI mask allows the EC enough time to finish doing what it's
+ * doing.
+ */
+ olpc_ec_cmd(0x32, NULL, 0, NULL, 0);
+}
+
+static int olpc_pm_enter(suspend_state_t pm_state)
+{
+ /* Only STR is supported */
+ if (pm_state != PM_SUSPEND_MEM)
+ return -EINVAL;
+
+ olpc_fixup_sleep();
+
+ /* Set the GPIO wakeup bits */
+ outl(gpio_wake_events, acpi_base + PM_GPE0_EN);
+ outl(0xFFFFFFFF, acpi_base + PM_GPE0_STS);
+
+ /* Save CPU state */
+ do_olpc_suspend_lowlevel();
+
+ olpc_fixup_wakeup();
+
+ /* Restore the SCI wakeup events */
+ outl(gpio_wake_events, acpi_base + PM_GPE0_EN);
+
+ return 0;
+}
+
+int asmlinkage olpc_do_sleep(u8 sleep_state)
+{
+ void *pgd_addr = __va(read_cr3());
+ printk(KERN_ERR "olpc_do_sleep!\n"); /* this needs to remain here so
+ * that gcc doesn't optimize
+ * away our __va! */
+ /* FIXME: Set the SCI bits we want to wake up on here */
+
+ /* FIXME: Set any other SCI events that we might want here */
+
+ outl((olpc_wakeup_mask << 16) | 0xFFFF, acpi_base + PM1_STS);
+
+ wackup_source = NULL;
+
+ /* If we are in test mode, then just return (simulate a successful
+ suspend/resume). Otherwise, if we are doing the real thing,
+ then go for the gusto */
+
+ if (olpc_pm_mode != PM_MODE_TEST) {
+ __asm__ __volatile__("movl %0,%%eax" : : "r" (pgd_addr));
+ __asm__("call *(%%edi); cld"
+ : : "D" (&ofw_bios_entry));
+ __asm__ __volatile__("movb $0x34, %al\n\t"
+ "outb %al, $0x70\n\t"
+ "movb $0x30, %al\n\t"
+ "outb %al, $0x71\n\t");
+
+ }
+ else if (test_timeout > 0) {
+ int t;
+
+ /* Delay N seconds for testing purposes */
+
+ for(t = 0; t < test_timeout; t++)
+ mdelay(1000);
+ }
+
+ return 0;
+}
+
+static void olpc_power_off(void)
+{
+ printk(KERN_INFO "OLPC power off sequence...\n");
+
+ /* Enable all of these controls with 0 delay */
+ outl(0x40000000, pms_base + PM_SCLK);
+ outl(0x40000000, pms_base + PM_IN_SLPCTL);
+ outl(0x40000000, pms_base + PM_WKXD);
+ outl(0x40000000, pms_base + PM_WKD);
+
+ /* Clear status bits (possibly unnecessary) */
+ outl(0x0002ffff, pms_base + PM_SSC);
+ outl(0xffffffff, acpi_base + PM_GPE0_STS);
+
+ /* Write SLP_EN bit to start the machinery */
+ outl(0x00002000, acpi_base + PM1_CNT);
+}
+
+/* This code will slowly disappear as we fixup the issues in the BIOS */
+
+static void __init olpc_fixup_bios(void)
+{
+ unsigned long hi, lo;
+
+ if (olpc_has_vsa()) {
+ /* The VSA aggressively sets up the ACPI and PM register for
+ * trapping - its not enough to force these values in the BIOS -
+ * they seem to be changed during PCI init as well.
+ */
+
+ /* Change the PM registers to decode to the DD */
+
+ rdmsr(0x510100e2, lo, hi);
+ hi |= 0x80000000;
+ wrmsr(0x510100e2, lo, hi);
+
+ /* Change the ACPI registers to decode to the DD */
+
+ rdmsr(0x510100e3, lo, hi);
+ hi |= 0x80000000;
+ wrmsr(0x510100e3, lo, hi);
+ }
+
+ /* GPIO24 controls WORK_AUX */
+
+ geode_gpio_set(OLPC_GPIO_WORKAUX, GPIO_OUTPUT_ENABLE);
+ geode_gpio_set(OLPC_GPIO_WORKAUX, GPIO_OUTPUT_AUX1);
+
+ if (olpc_board_at_least(olpc_board(0xb2))) {
+ /* GPIO10 is connected to the thermal alarm */
+ geode_gpio_set(OLPC_GPIO_THRM_ALRM, GPIO_INPUT_ENABLE);
+ geode_gpio_set(OLPC_GPIO_THRM_ALRM, GPIO_INPUT_AUX1);
+
+ /* Set up to get LID events */
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_INPUT_ENABLE);
+
+ /* Clear edge detection and event enable for now */
+ geode_gpio_clear(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
+ geode_gpio_clear(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_EN);
+ geode_gpio_clear(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_EN);
+
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_STS);
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_STS);
+
+ /* Set the LID to cause an PME event on group 6 */
+ geode_gpio_event_pme(OLPC_GPIO_LID, 6);
+
+ /* Set PME group 6 to fire the SCI interrupt */
+ geode_gpio_set_irq(6, sci_irq);
+ }
+
+ geode_gpio_set(OLPC_GPIO_ECSCI, GPIO_INPUT_ENABLE);
+
+ /* Clear pending events */
+
+ geode_gpio_set(OLPC_GPIO_ECSCI, GPIO_NEGATIVE_EDGE_STS);
+ geode_gpio_set(OLPC_GPIO_ECSCI, GPIO_POSITIVE_EDGE_STS);
+
+ //geode_gpio_set(OLPC_GPIO_ECSCI, GPIO_NEGATIVE_EDGE_EN);
+ geode_gpio_set(OLPC_GPIO_ECSCI, GPIO_EVENTS_ENABLE);
+
+ /* Set the SCI to cause a PME event on group 7 */
+ geode_gpio_event_pme(OLPC_GPIO_ECSCI, 7);
+
+ /* And have group 6 also fire the SCI interrupt */
+ geode_gpio_set_irq(7, sci_irq);
+}
+
+/* This provides a control file for setting up testing of the
+ power management system. For now, there is just one setting:
+ "test" which means that we don't actually enter the power
+ off routine.
+*/
+
+static const char * const pm_states[] = {
+ [PM_MODE_NORMAL] = "normal",
+ [PM_MODE_TEST] = "test",
+};
+
+extern struct mutex pm_mutex;
+extern struct kset power_subsys;
+
+static ssize_t control_show(struct kset *s, char *buf)
+{
+ return sprintf(buf, "%s\n", pm_states[olpc_pm_mode]);
+}
+
+static ssize_t control_store(struct kset *s, const char *buf, size_t n)
+{
+ int i, len;
+ char *p;
+
+ p = memchr(buf, '\n', n);
+ len = p ? p - buf : n;
+
+ /* Grab the mutex */
+ mutex_lock(&pm_mutex);
+
+ for(i = 0; i < PM_MODE_MAX; i++) {
+ if (!strncmp(buf, pm_states[i], len)) {
+ olpc_pm_mode = i;
+ break;
+ }
+ }
+
+ mutex_unlock(&pm_mutex);
+
+ return (i == PM_MODE_MAX) ? -EINVAL : n;
+}
+
+static ssize_t timeout_show(struct kset *s, char *buf)
+{
+ return sprintf(buf, "%d\n", test_timeout);
+}
+
+static ssize_t timeout_store(struct kset *s, const char *buf, size_t n)
+{
+ unsigned int t = simple_strtoul(buf, NULL, 0);
+ test_timeout = t;
+
+ return n;
+}
+
+static ssize_t wackup_show(struct kset *s, char *buf)
+{
+ return sprintf(buf, "%s\n", wackup_source ? wackup_source : "none");
+}
+
+static struct subsys_attribute control_attr = {
+ .attr = {
+ .name = "olpc-pm",
+ .mode = 0644,
+ },
+ .show = control_show,
+ .store = control_store,
+};
+
+static struct subsys_attribute test_attr = {
+ .attr = {
+ .name = "test-timeout",
+ .mode = 0644,
+ },
+ .show = timeout_show,
+ .store = timeout_store,
+};
+
+static struct subsys_attribute wackup_attr = {
+ .attr = {
+ .name = "wakeup-source",
+ .mode = 0400,
+ },
+ .show = wackup_show,
+};
+
+static struct attribute * olpc_attributes[] = {
+ &control_attr.attr,
+ &test_attr.attr,
+ &wackup_attr.attr,
+ NULL
+};
+
+static struct attribute_group olpc_attrs = {
+ .attrs = olpc_attributes,
+};
+
+static int __init alloc_inputdevs(void)
+{
+ int ret = -ENOMEM;
+
+ pm_inputdev = input_allocate_device();
+ if (!pm_inputdev)
+ goto err;
+
+ pm_inputdev->name = "OLPC PM";
+ pm_inputdev->phys = "olpc_pm/input0";
+ set_bit(EV_KEY, pm_inputdev->evbit);
+ set_bit(KEY_POWER, pm_inputdev->keybit);
+
+ ret = input_register_device(pm_inputdev);
+ if (ret) {
+ printk(KERN_ERR "olpc-pm: failed to register PM input device: %d\n", ret);
+ goto err;
+ }
+
+ lid_inputdev = input_allocate_device();
+ if (!lid_inputdev)
+ goto err;
+
+ lid_inputdev->name = "OLPC lid switch";
+ lid_inputdev->phys = "olpc_pm/input1";
+ set_bit(EV_SW, lid_inputdev->evbit);
+ set_bit(SW_LID, lid_inputdev->swbit);
+
+ ret = input_register_device(lid_inputdev);
+ if (ret) {
+ printk(KERN_ERR "olpc-pm: failed to register lid input device: %d\n", ret);
+ goto err;
+ }
+
+ ebook_inputdev = input_allocate_device();
+ if (!ebook_inputdev)
+ goto err;
+
+ ebook_inputdev->name = "OLPC ebook switch";
+ ebook_inputdev->phys = "olpc_pm/input2";
+ set_bit(EV_SW, ebook_inputdev->evbit);
+ set_bit(SW_TABLET_MODE, ebook_inputdev->swbit);
+
+ ret = input_register_device(ebook_inputdev);
+ if (ret) {
+ printk(KERN_ERR "olpc-pm: failed to register ebook input device: %d\n", ret);
+ goto err;
+ }
+
+ return ret;
+err:
+ if (ebook_inputdev) {
+ input_unregister_device(ebook_inputdev);
+ ebook_inputdev = NULL;
+ }
+ if (lid_inputdev) {
+ input_unregister_device(lid_inputdev);
+ lid_inputdev = NULL;
+ }
+ if (pm_inputdev) {
+ input_unregister_device(pm_inputdev);
+ pm_inputdev = NULL;
+ }
+
+ return ret;
+}
+
+static int __init olpc_pm_init(void)
+{
+ uint32_t lo, hi;
+ int ret;
+
+ if (!machine_is_olpc())
+ return -ENODEV;
+
+ acpi_base = geode_acpi_base();
+ pms_base = geode_pms_base();
+
+ if (!acpi_base || !pms_base)
+ return -ENODEV;
+
+ pm_power_off = olpc_power_off;
+
+ ret = alloc_inputdevs();
+ if (ret)
+ return ret;
+
+ rdmsr(0x51400020, lo, hi);
+ sci_irq = (lo >> 20) & 15;
+
+ if (sci_irq) {
+ printk(KERN_INFO "SCI is mapped to IRQ %d\n", sci_irq);
+ } else {
+ /* Zero doesn't mean zero -- it means masked */
+ printk(KERN_INFO "SCI unmapped. Mapping to IRQ 3\n");
+ sci_irq = 3;
+ lo |= 0x00300000;
+ wrmsrl(0x51400020, lo);
+ }
+
+ olpc_fixup_bios();
+
+ lo = inl(pms_base + PM_FSD);
+
+ /* Lock, enable failsafe, 4 seconds */
+ outl(0xc001f400, pms_base + PM_FSD);
+
+ /* Here we set up the SCI events we're interested in during
+ * real-time. We have no sleep button, and the RTC doesn't make
+ * sense, so set up the power button
+ */
+
+ outl(inl(acpi_base) | ((CS5536_PM_PWRBTN) << 16), acpi_base);
+
+ if (olpc_board_at_least(olpc_board(0xb2))) {
+ gpio_wake_events |= GPIO_WAKEUP_LID;
+
+ /* Get the current value of the GPIO, and set up the edges */
+ olpc_lid_flag = geode_gpio_isset(OLPC_GPIO_LID, GPIO_READ_BACK);
+
+ /* Watch for the opposite edge */
+
+ if (olpc_lid_flag)
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_NEGATIVE_EDGE_EN);
+ else
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_POSITIVE_EDGE_EN);
+
+ /* Enable the event */
+ geode_gpio_set(OLPC_GPIO_LID, GPIO_EVENTS_ENABLE);
+ }
+
+ /* Set up the EC SCI */
+
+ gpio_wake_events |= GPIO_WAKEUP_EC;
+
+ outl(gpio_wake_events, acpi_base + PM_GPE0_EN);
+ outl(0xFFFFFFFF, acpi_base + PM_GPE0_STS);
+
+ /* Select level triggered in PIC */
+
+ if (sci_irq < 8) {
+ lo = inb(0x4d0);
+ lo |= 1 << sci_irq;
+ outb(lo, 0x4d0);
+ } else {
+ lo = inb(0x4d1);
+ lo |= 1 << (sci_irq - 8);
+ outb(lo, 0x4d1);
+ }
+ /* Clear pending interrupt */
+ outl(inl(acpi_base) | 0xFFFF, acpi_base);
+ process_sci_queue(0); /* we just want to flush the queue here */
+ init_ebook_state();
+
+ /* Enable the interrupt */
+
+ ret = request_irq(sci_irq, &olpc_pm_interrupt, 0, "SCI", &acpi_base);
+
+ if (ret) {
+ printk(KERN_ERR "Error registering SCI: %d\n", ret);
+ return ret;
+ }
+
+ ofw_bios_entry.address = 0xF0000 + PAGE_OFFSET;
+ suspend_set_ops(&olpc_pm_ops);
+
+ sysfs_create_group(&power_subsys.kobj, &olpc_attrs);
+
+ return 0;
+}
+
+
+#if defined (CONFIG_RTC_DRV_CMOS) || defined (CONFIG_RTC_DRV_CMOS_MODULE)
+struct resource rtc_platform_resource[2] = {
+ {
+ .flags = IORESOURCE_IO,
+ .start = RTC_PORT(0),
+ .end = RTC_PORT(0) + RTC_IO_EXTENT
+ },
+ {
+ .flags = IORESOURCE_IRQ,
+ .start = 8,
+ .end = 8,
+ },
+};
+
+
+static void rtc_wake_on(struct device *dev)
+{
+ olpc_wakeup_mask |= CS5536_PM_RTC;
+}
+
+static void rtc_wake_off(struct device *dev)
+{
+ olpc_wakeup_mask &= ~(CS5536_PM_RTC);
+}
+
+static struct cmos_rtc_board_info rtc_info = {
+ .rtc_day_alarm = 0,
+ .rtc_mon_alarm = 0,
+ .rtc_century = 0,
+ .wake_on = rtc_wake_on,
+ .wake_off = rtc_wake_off,
+};
+
+struct platform_device olpc_rtc_device = {
+ .name = "rtc_cmos",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(rtc_platform_resource),
+ .dev.platform_data = &rtc_info,
+ .resource = rtc_platform_resource,
+};
+
+static int __init olpc_platform_init(void)
+{
+ rdmsrl(MSR_RTC_DOMA_OFFSET, rtc_info.rtc_day_alarm);
+ rdmsrl(MSR_RTC_MONA_OFFSET, rtc_info.rtc_mon_alarm);
+ rdmsrl(MSR_RTC_CEN_OFFSET, rtc_info.rtc_century);
+
+ (void)platform_device_register(&olpc_rtc_device);
+ device_init_wakeup(&olpc_rtc_device.dev, 1);
+
+ (void)platform_device_register(&olpc_powerbutton_dev);
+ device_init_wakeup(&olpc_powerbutton_dev.dev, 1);
+
+ (void)platform_device_register(&olpc_lid_dev);
+ device_init_wakeup(&olpc_lid_dev.dev, 1);
+
+ return 0;
+}
+arch_initcall(olpc_platform_init);
+#endif /* CONFIG_RTC_DRV_CMOS */
+
+static void olpc_pm_exit(void)
+{
+ /* Clear any pending events, and disable them */
+ outl(0xFFFF, acpi_base+2);
+
+ free_irq(sci_irq, &acpi_base);
+ input_unregister_device(pm_inputdev);
+ input_unregister_device(lid_inputdev);
+ input_unregister_device(ebook_inputdev);
+}
+
+static struct platform_suspend_ops olpc_pm_ops = {
+ .valid = olpc_pm_state_valid,
+ .enter = olpc_pm_enter,
+};
+
+module_init(olpc_pm_init);
+module_exit(olpc_pm_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("AMD Geode power management for OLPC CL1");
diff -purN linux_2.6.24_org/arch/x86/kernel/olpc-sleep.S linux_2.6.24_olpc/arch/x86/kernel/olpc-sleep.S
--- linux_2.6.24_org/arch/x86/kernel/olpc-sleep.S 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/arch/x86/kernel/olpc-sleep.S 2008-02-15 18:59:26.000000000 +0000
@@ -0,0 +1,39 @@
+.text
+
+ENTRY(olpc_sleep_asm)
+olpc_sleep:
+ ;; Get the value of PM1_CNT and store it off
+
+ add 08h, ax
+ mov bx,dx
+ in dx,eax
+ or 2000h, ax
+ mov ax,di
+
+ ;; flush the cache
+ wbinvd
+
+ ;; GX2 must disable refresh before going into self-refresh
+ mov 2000000180xh, ecx
+ rdmsr
+ mov eax, esi
+ and 0FF0000FFh, eax
+ wrmsr
+
+ ;; Now, put the memory into self refresh
+ mov 2004, cx
+ xor edx, edx
+ xor eax, eax
+ mov 04h, al
+ wrmsr
+
+ ;; Thats all she wrote - time to go to sleep
+
+ mov bx, dx
+ movzx di, eax
+ out eax, dx
+
+ ;;
+
+
+
diff -purN linux_2.6.24_org/arch/x86/kernel/olpc-wakeup.S linux_2.6.24_olpc/arch/x86/kernel/olpc-wakeup.S
--- linux_2.6.24_org/arch/x86/kernel/olpc-wakeup.S 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/arch/x86/kernel/olpc-wakeup.S 2008-02-15 18:59:25.000000000 +0000
@@ -0,0 +1,133 @@
+.text
+#include <linux/linkage.h>
+#include <asm/segment.h>
+#include <asm/page.h>
+
+ .macro writepost,value
+ movb $0x34, %al
+ outb %al, $0x70
+ movb $\value, %al
+ outb %al, $0x71
+ .endm
+
+ALIGN
+ .align 4096
+
+wakeup_start:
+# jmp wakeup_start
+
+ cli
+ cld
+
+ # Clear any dangerous flags
+
+ pushl $0
+ popfl
+
+ writepost 0x31
+
+ # Set up %cr3
+ movl $swsusp_pg_dir - __PAGE_OFFSET, %eax
+ movl %eax, %cr3
+
+ movl saved_cr4, %eax
+ movl %eax, %cr4
+
+ movl saved_cr0, %eax
+ movl %eax, %cr0
+
+ jmp 1f
+1:
+ ljmpl $__KERNEL_CS,$wakeup_return
+
+
+.org 0x1000
+
+wakeup_return:
+ movw $__KERNEL_DS, %ax
+ movw %ax, %ss
+ movw %ax, %ds
+ movw %ax, %es
+ movw %ax, %fs
+ movw %ax, %gs
+
+ lgdt saved_gdt
+ lidt saved_idt
+ lldt saved_ldt
+ ljmp $(__KERNEL_CS),$1f
+1:
+ movl %cr3, %eax
+ movl %eax, %cr3
+ wbinvd
+
+ # Go back to the return point
+ jmp ret_point
+
+save_registers:
+ sgdt saved_gdt
+ sidt saved_idt
+ sldt saved_ldt
+
+ pushl %edx
+ movl %cr4, %edx
+ movl %edx, saved_cr4
+
+ movl %cr0, %edx
+ movl %edx, saved_cr0
+
+ popl %edx
+
+
+ movl %ebx, saved_context_ebx
+ movl %ebp, saved_context_ebp
+ movl %esi, saved_context_esi
+ movl %edi, saved_context_edi
+
+ pushfl
+ popl saved_context_eflags
+
+ ret
+
+
+restore_registers:
+ movl saved_context_ebp, %ebp
+ movl saved_context_ebx, %ebx
+ movl saved_context_esi, %esi
+ movl saved_context_edi, %edi
+
+ pushl saved_context_eflags
+ popfl
+
+ ret
+
+
+ENTRY(do_olpc_suspend_lowlevel)
+ call save_processor_state
+ call save_registers
+
+ # This is the stack context we want to remember
+ movl %esp, saved_context_esp
+
+ pushl $3
+ call olpc_do_sleep
+
+ jmp wakeup_start
+ .p2align 4,,7
+ret_point:
+ movl saved_context_esp, %esp
+
+ writepost 0x32
+
+ call restore_registers
+ call restore_processor_state
+ ret
+
+.data
+ALIGN
+
+saved_gdt: .long 0,0
+saved_idt: .long 0,0
+saved_ldt: .long 0
+saved_cr4: .long 0
+saved_cr0: .long 0
+
diff -purN linux_2.6.24_org/arch/x86/kernel/prom.c linux_2.6.24_olpc/arch/x86/kernel/prom.c
--- linux_2.6.24_org/arch/x86/kernel/prom.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/arch/x86/kernel/prom.c 2008-02-15 18:59:26.000000000 +0000
@@ -0,0 +1,478 @@
+/*
+ * Procedures for creating, accessing and interpreting the device tree.
+ *
+ * Paul Mackerras August 1996.
+ * Copyright (C) 1996-2005 Paul Mackerras.
+ *
+ * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
+ * {engebret|bergner}@us.ibm.com
+ *
+ * Adapted for sparc64 by David S. Miller davem@davemloft.net
+ *
+ * Adapter for i386/OLPC by Andres Salomon <dilinger@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <linux/module.h>
+#include <asm/prom.h>
+#include <asm/ofw.h>
+
+/*
+ * XXX: This is very much a stub; right now we're keeping 2 device trees
+ * in memory (one for promfs, and one here). That will not remain
+ * for long!
+ */
+
+static struct device_node *allnodes;
+
+/* use when traversing tree through the allnext, child, sibling,
+ * or parent members of struct device_node.
+ */
+static DEFINE_RWLOCK(devtree_lock);
+
+int of_device_is_compatible(const struct device_node *device,
+ const char *compat)
+{
+ const char* cp;
+ int cplen, l;
+
+ cp = of_get_property(device, "compatible", &cplen);
+ if (cp == NULL)
+ return 0;
+ while (cplen > 0) {
+ if (strncmp(cp, compat, strlen(compat)) == 0)
+ return 1;
+ l = strlen(cp) + 1;
+ cp += l;
+ cplen -= l;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(of_device_is_compatible);
+
+struct device_node *of_get_parent(const struct device_node *node)
+{
+ struct device_node *np;
+
+ if (!node)
+ return NULL;
+
+ np = node->parent;
+
+ return np;
+}
+EXPORT_SYMBOL(of_get_parent);
+
+struct device_node *of_get_next_child(const struct device_node *node,
+ struct device_node *prev)
+{
+ struct device_node *next;
+
+ next = prev ? prev->sibling : node->child;
+ for (; next != 0; next = next->sibling) {
+ break;
+ }
+
+ return next;
+}
+EXPORT_SYMBOL(of_get_next_child);
+
+struct device_node *of_find_node_by_path(const char *path)
+{
+ struct device_node *np = allnodes;
+
+ for (; np != 0; np = np->allnext) {
+ if (np->full_name != 0 && strcmp(np->full_name, path) == 0)
+ break;
+ }
+
+ return np;
+}
+EXPORT_SYMBOL(of_find_node_by_path);
+
+struct device_node *of_find_node_by_phandle(phandle handle)
+{
+ struct device_node *np;
+
+ for (np = allnodes; np != 0; np = np->allnext)
+ if (np->node == handle)
+ break;
+
+ return np;
+}
+EXPORT_SYMBOL(of_find_node_by_phandle);
+
+struct device_node *of_find_node_by_name(struct device_node *from,
+ const char *name)
+{
+ struct device_node *np;
+
+ np = from ? from->allnext : allnodes;
+ for (; np != NULL; np = np->allnext)
+ if (np->name != NULL && strcmp(np->name, name) == 0)
+ break;
+
+ return np;
+}
+EXPORT_SYMBOL(of_find_node_by_name);
+
+struct device_node *of_find_node_by_type(struct device_node *from,
+ const char *type)
+{
+ struct device_node *np;
+
+ np = from ? from->allnext : allnodes;
+ for (; np != 0; np = np->allnext)
+ if (np->type != 0 && strcmp(np->type, type) == 0)
+ break;
+
+ return np;
+}
+EXPORT_SYMBOL(of_find_node_by_type);
+
+struct device_node *of_find_compatible_node(struct device_node *from,
+ const char *type, const char *compatible)
+{
+ struct device_node *np;
+
+ np = from ? from->allnext : allnodes;
+ for (; np != 0; np = np->allnext) {
+ if (type != NULL
+ && !(np->type != 0 && strcmp(np->type, type) == 0))
+ continue;
+ if (of_device_is_compatible(np, compatible))
+ break;
+ }
+
+ return np;
+}
+EXPORT_SYMBOL(of_find_compatible_node);
+
+struct property *of_find_property(const struct device_node *np,
+ const char *name,
+ int *lenp)
+{
+ struct property *pp;
+
+ for (pp = np->properties; pp != 0; pp = pp->next) {
+ if (strcasecmp(pp->name, name) == 0) {
+ if (lenp != 0)
+ *lenp = pp->length;
+ break;
+ }
+ }
+ return pp;
+}
+EXPORT_SYMBOL(of_find_property);
+
+/*
+ * Find a property with a given name for a given node
+ * and return the value.
+ */
+const void *of_get_property(const struct device_node *np, const char *name,
+ int *lenp)
+{
+ struct property *pp = of_find_property(np,name,lenp);
+ return pp ? pp->value : NULL;
+}
+EXPORT_SYMBOL(of_get_property);
+
+int of_getintprop_default(struct device_node *np, const char *name, int def)
+{
+ struct property *prop;
+ int len;
+
+ prop = of_find_property(np, name, &len);
+ if (!prop || len != 4)
+ return def;
+
+ return *(int *) prop->value;
+}
+EXPORT_SYMBOL(of_getintprop_default);
+
+int of_n_addr_cells(struct device_node *np)
+{
+ const int* ip;
+ do {
+ if (np->parent)
+ np = np->parent;
+ ip = of_get_property(np, "#address-cells", NULL);
+ if (ip != NULL)
+ return *ip;
+ } while (np->parent);
+ /* No #address-cells property for the root node, default to 2 */
+ return 2;
+}
+EXPORT_SYMBOL(of_n_addr_cells);
+
+int of_n_size_cells(struct device_node *np)
+{
+ const int* ip;
+ do {
+ if (np->parent)
+ np = np->parent;
+ ip = of_get_property(np, "#size-cells", NULL);
+ if (ip != NULL)
+ return *ip;
+ } while (np->parent);
+ /* No #size-cells property for the root node, default to 1 */
+ return 1;
+}
+EXPORT_SYMBOL(of_n_size_cells);
+
+int of_set_property(struct device_node *dp, const char *name, void *val, int len)
+{
+ return -EIO;
+}
+EXPORT_SYMBOL(of_set_property);
+
+static unsigned int prom_early_allocated;
+
+static void * __init prom_early_alloc(unsigned long size)
+{
+ void *ret;
+
+ ret = kmalloc(size, GFP_KERNEL);
+ if (ret != NULL)
+ memset(ret, 0, size);
+ else
+ printk(KERN_ERR "ACK! couldn't allocate prom memory!\n");
+
+ prom_early_allocated += size;
+
+ return ret;
+}
+
+static int is_root_node(const struct device_node *dp)
+{
+ if (!dp)
+ return 0;
+
+ return (dp->parent == NULL);
+}
+
+static char * __init build_path_component(struct device_node *dp)
+{
+ int pathlen;
+ char *n, *i;
+
+ if (ofw("package-to-path", 3, 1, dp->node, NULL, 0, &pathlen)) {
+ printk(KERN_ERR "PROM: unable to get path name from OFW!\n");
+ return "ERROR";
+ }
+ n = prom_early_alloc(pathlen + 1);
+ if (ofw("package-to-path", 3, 1, dp->node, n, pathlen+1, &pathlen))
+ printk(KERN_ERR "PROM: unable to get path name from OFW\n");
+
+ if ((i = strrchr(n, '/')))
+ n = ++i; /* we only want the file name */
+ return n;
+}
+
+static char * __init build_full_name(struct device_node *dp)
+{
+ int len, ourlen, plen;
+ char *n;
+
+ plen = strlen(dp->parent->full_name);
+ ourlen = strlen(dp->path_component_name);
+ len = ourlen + plen + 2;
+
+ n = prom_early_alloc(len);
+ strcpy(n, dp->parent->full_name);
+ if (!is_root_node(dp->parent)) {
+ strcpy(n + plen, "/");
+ plen++;
+ }
+ strcpy(n + plen, dp->path_component_name);
+
+ return n;
+}
+
+static struct property * __init build_one_prop(phandle node, char *prev, char *special_name, void *special_val, int special_len)
+{
+ static struct property *tmp = NULL;
+ struct property *p;
+
+ if (tmp) {
+ p = tmp;
+ memset(p, 0, sizeof(*p) + 32);
+ tmp = NULL;
+ } else {
+ p = prom_early_alloc(sizeof(struct property) + 32);
+ }
+
+ p->name = (char *) (p + 1);
+ if (special_name) {
+ strcpy(p->name, special_name);
+ p->length = special_len;
+ p->value = prom_early_alloc(special_len);
+ memcpy(p->value, special_val, special_len);
+ } else {
+ int fl;
+ if (prev == NULL) {
+ if (ofw("nextprop", 3, 1, node, "", p->name, &fl)) {
+ printk(KERN_ERR "PROM: %s: nextprop failed!\n", __func__);
+ return NULL;
+ }
+ } else {
+ if (ofw("nextprop", 3, 1, node, prev, p->name, &fl)) {
+ printk(KERN_ERR "PROM: %s: nextprop failed!\n", __func__);
+ return NULL;
+ }
+ }
+ if (strlen(p->name) == 0 || fl != 1) {
+ tmp = p;
+ return NULL;
+ }
+ if (ofw("getproplen", 2, 1, node, p->name, &p->length)) {
+ printk(KERN_ERR "PROM: %s: getproplen failed!\n", __func__);
+ return NULL;
+ }
+ if (p->length <= 0) {
+ p->length = 0;
+ } else {
+ p->value = prom_early_alloc(p->length + 1);
+ if (ofw("getprop", 4, 1, node, p->name, p->value, p->length, &p->length)) {
+ printk(KERN_ERR "PROM: %s: getprop failed!\n", __func__);
+ return NULL;
+ }
+ ((unsigned char *)p->value)[p->length] = '\0';
+ }
+ }
+ return p;
+}
+
+static struct property * __init build_prop_list(phandle node)
+{
+ struct property *head, *tail;
+
+ head = tail = build_one_prop(node, NULL,
+ ".node", &node, sizeof(node));
+
+ tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
+ tail = tail->next;
+ while(tail) {
+ tail->next = build_one_prop(node, tail->name,
+ NULL, NULL, 0);
+ tail = tail->next;
+ }
+
+ return head;
+}
+
+static char * __init get_one_property(phandle node, const char *name)
+{
+ char *buf = "<NULL>";
+ int len;
+
+ if (ofw("getproplen", 2, 1, node, name, &len)) {
+ printk(KERN_ERR "PROM: %s: getproplen failed!\n", __func__);
+ return NULL;
+ }
+ if (len > 0) {
+ buf = prom_early_alloc(len);
+ if (ofw("getprop", 4, 1, node, name, buf, len, &len)) {
+ printk(KERN_ERR "PROM: %s: getprop failed!\n", __func__);
+ return NULL;
+ }
+ }
+
+ return buf;
+}
+
+static struct device_node * __init create_node(phandle node, struct device_node *parent)
+{
+ struct device_node *dp;
+
+ if (!node)
+ return NULL;
+
+ dp = prom_early_alloc(sizeof(*dp));
+ dp->parent = parent;
+
+ kref_init(&dp->kref);
+
+ dp->name = get_one_property(node, "name");
+ dp->type = get_one_property(node, "device_type");
+ dp->node = node;
+
+ dp->properties = build_prop_list(node);
+
+ return dp;
+}
+
+static struct device_node * __init build_tree(struct device_node *parent, phandle node, struct device_node ***nextp)
+{
+ struct device_node *ret = NULL, *prev_sibling = NULL;
+ struct device_node *dp;
+ u32 child;
+
+ while (1) {
+ dp = create_node(node, parent);
+ if (!dp)
+ break;
+
+ if (prev_sibling)
+ prev_sibling->sibling = dp;
+
+ if (!ret)
+ ret = dp;
+ prev_sibling = dp;
+
+ *(*nextp) = dp;
+ *nextp = &dp->allnext;
+
+ dp->path_component_name = build_path_component(dp);
+ dp->full_name = build_full_name(dp);
+
+ if (ofw("child", 1, 1, node, &child)) {
+ printk(KERN_ERR "PROM: %s: fetching child failed!\n", __func__);
+ return NULL;
+ }
+ dp->child = build_tree(dp, child, nextp);
+
+ if (ofw("peer", 1, 1, node, &node)) {
+ printk(KERN_ERR "PROM: %s: fetching peer failed!\n", __func__);
+ return NULL;
+ }
+ }
+
+ return ret;
+}
+
+static phandle root_node;
+
+void __init prom_build_devicetree(void)
+{
+ struct device_node **nextp;
+ u32 child;
+
+ if (ofw("peer", 1, 1, 0, &root_node)) {
+ printk(KERN_ERR "PROM: unable to get root node from OFW!\n");
+ return;
+ }
+
+ allnodes = create_node(root_node, NULL);
+ allnodes->path_component_name = "";
+ allnodes->full_name = "/";
+
+ nextp = &allnodes->allnext;
+ if (ofw("child", 1, 1, allnodes->node, &child)) {
+ printk(KERN_ERR "PROM: unable to get child node from OFW!\n");
+ return;
+ }
+ allnodes->child = build_tree(allnodes, child, &nextp);
+ printk("PROM: Built device tree with %u bytes of memory.\n",
+ prom_early_allocated);
+}
diff -purN linux_2.6.24_org/arch/x86/pci/olpc.c linux_2.6.24_olpc/arch/x86/pci/olpc.c
--- linux_2.6.24_org/arch/x86/pci/olpc.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/arch/x86/pci/olpc.c 2008-02-15 18:59:22.000000000 +0000
@@ -0,0 +1,298 @@
+/*
+ * olpcpci.c - Low-level PCI config space access for OLPC systems
+ * without the VSA PCI virtualization software.
+ *
+ * The AMD Geode chipset (GX2 processor, cs5536 I/O companion device)
+ * has some I/O functions (display, southbridge, sound, USB HCIs, etc)
+ * that more or less behave like PCI devices, but the hardware doesn't
+ * directly implement the PCI configuration space headers. AMD provides
+ * "VSA" (Virtual System Architecture) software that emulates PCI config
+ * space for these devices, by trapping I/O accesses to PCI config register
+ * (CF8/CFC) and running some code in System Management Mode interrupt state.
+ * On the OLPC platform, we don't want to use that VSA code because
+ * (a) it slows down suspend/resume, and (b) recompiling it requires special
+ * compilers that are hard to get. So instead of letting the complex VSA
+ * code simulate the PCI config registers for the on-chip devices, we
+ * just simulate them the easy way, by inserting the code into the
+ * pci_write_config and pci_read_config path. Most of the config registers
+ * are read-only anyway, so the bulk of the simulation is just table lookup.
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <asm/olpc.h>
+#include <asm/geode.h>
+#include "pci.h"
+
+static int is_lx;
+
+/*
+ * In the tables below, the first two line (8 longwords) are the
+ * size masks that are used when the higher level PCI code determines
+ * the size of the region by writing ~0 to a base address register
+ * and reading back the result.
+ *
+ * The following lines are the values that are read during normal
+ * PCI config access cycles, i.e. not after just having written
+ * ~0 to a base address register.
+ */
+
+static const u32 lxnb_hdr[] = { /* dev 1 function 0 - devfn = 8 */
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+
+ 0x281022 , 0x2200005 , 0x6000021 , 0x80f808 , /* AMD Vendor ID */
+ 0x0 , 0x0 , 0x0 , 0x0 , /* No virtual registers, hence no BAR for them */
+ 0x0 , 0x0 , 0x0 , 0x28100b ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+};
+
+static const u32 gxnb_hdr[] = { /* dev 1 function 0 - devfn = 8 */
+ 0xfffffffd , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+
+ 0x28100b , 0x2200005 , 0x6000021 , 0x80f808 , /* NSC Vendor ID */
+ 0xac1d , 0x0 , 0x0 , 0x0 , /* I/O BAR - base of virtual registers */
+ 0x0 , 0x0 , 0x0 , 0x28100b ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+};
+
+static const u32 lxfb_hdr[] = { /* dev 1 function 1 - devfn = 9 */
+ 0xff800008 , 0xffffc000 , 0xffffc000 , 0xffffc000 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+
+ 0x20811022 , 0x2200003 , 0x3000000 , 0x0 , /* AMD Vendor ID */
+ 0xfd000000 , 0xfe000000 , 0xfe004000 , 0xfe008000 , /* FB, GP, VG, DF */
+ 0xfe00c000 , 0x0 , 0x0 , 0x30100b , /* VIP */
+ 0x0 , 0x0 , 0x0 , 0x10e , /* INTA, IRQ14 for graphics accel */
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x3d0 , 0x3c0 , 0xa0000 , 0x0 , /* VG IO, VG IO, EGA FB, MONO FB */
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+};
+
+static const u32 gxfb_hdr[] = { /* dev 1 function 1 - devfn = 9 */
+ 0xff800008 , 0xffffc000 , 0xffffc000 , 0xffffc000 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+
+ 0x30100b , 0x2200003 , 0x3000000 , 0x0 , /* NSC Vendor ID */
+ 0xfd000000 , 0xfe000000 , 0xfe004000 , 0xfe008000 , /* FB, GP, VG, DF */
+ 0x0 , 0x0 , 0x0 , 0x30100b ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x3d0 , 0x3c0 , 0xa0000 , 0x0 , /* VG IO, VG IO, EGA FB, MONO FB */
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+};
+
+static const u32 aes_hdr[] = { /* dev 1 function 2 - devfn = 0xa */
+ 0xffffc000 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+
+ 0x20821022 , 0x2a00006 , 0x10100000 , 0x8 , /* NSC Vendor ID */
+ 0xfe010000 , 0x0 , 0x0 , 0x0 , /* AES registers */
+ 0x0 , 0x0 , 0x0 , 0x20821022 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+};
+
+
+static const u32 isa_hdr[] = { /* dev f function 0 - devfn = 78 */
+ 0xfffffff9 , 0xffffff01 , 0xffffffc1 , 0xffffffe1 ,
+ 0xffffff81 , 0xffffffc1 , 0x0 , 0x0 ,
+
+ 0x20901022 , 0x2a00049 , 0x6010003 , 0x802000 ,
+ 0x18b1 , 0x1001 , 0x1801 , 0x1881 , /* SMB-8 GPIO-256 MFGPT-64 IRQ-32 */
+ 0x1401 , 0x1841 , 0x0 , 0x20901022 , /* PMS-128 ACPI-64 */
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0xaa5b , /* interrupt steering */
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+};
+
+static const u32 ac97_hdr[] = { /* dev f function 3 - devfn = 7b */
+ 0xffffff81 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+
+ 0x20931022 , 0x2a00041 , 0x4010001 , 0x0 ,
+ 0x1481 , 0x0 , 0x0 , 0x0 , /* I/O BAR-128 */
+ 0x0 , 0x0 , 0x0 , 0x20931022 ,
+ 0x0 , 0x0 , 0x0 , 0x205 , /* IntB , IRQ5 */
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+};
+
+static const u32 ohci_hdr[] = { /* dev f function 4 - devfn = 7c */
+ 0xfffff000 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+
+ 0x20941022 , 0x2300006 , 0xc031002 , 0x0 ,
+ 0xfe01a000 , 0x0 , 0x0 , 0x0 , /* MEMBAR-1000 */
+ 0x0 , 0x0 , 0x0 , 0x20941022 ,
+ 0x0 , 0x40 , 0x0 , 0x40a , /* CapPtr INT-D, IRQ A */
+ 0xc8020001 , 0x0 , 0x0 , 0x0 , /* Capabilities - 40 is R/O, 44 is mask 8103 (power control) */
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+};
+
+static const u32 ehci_hdr[] = { /* dev f function 4 - devfn = 7d */
+ 0xfffff000 , 0x0 , 0x0 , 0x0 ,
+ 0x0 , 0x0 , 0x0 , 0x0 ,
+
+ 0x20951022 , 0x2300006 , 0xc032002 , 0x0 ,
+ 0xfe01b000 , 0x0 , 0x0 , 0x0 , /* MEMBAR-1000 */
+ 0x0 , 0x0 , 0x0 , 0x20951022 ,
+ 0x0 , 0x40 , 0x0 , 0x40a , /* CapPtr INT-D, IRQ A */
+ 0xc8020001 , 0x0 , 0x0 , 0x0 , /* Capabilities - 40 is R/O, 44 is mask 8103 (power control) */
+#if 0
+ 0x1 , 0x40080000 , 0x0 , 0x0 , /* EECP - see section 2.1.7 of EHCI spec */
+#endif
+ 0x01000001 , 0x00000000 , 0x0 , 0x0 , /* EECP - see section 2.1.7 of EHCI spec */
+ 0x2020 , 0x0 , 0x0 , 0x0 , /* (EHCI page 8) 60 SBRN (R/O), 61 FLADJ (R/W), PORTWAKECAP */
+};
+
+static u32 ff_loc = ~0;
+static u32 zero_loc = 0;
+
+static int bar_probing = 0; /* Set after a write of ~0 to a BAR */
+
+#define NB_SLOT 0x1 /* Northbridge - GX chip - Device 1 */
+#define SB_SLOT 0xf /* Southbridge - CS5536 chip - Device F */
+#define SIMULATED(bus, devfn) (((bus) == 0) && ((PCI_SLOT(devfn) == NB_SLOT) || (PCI_SLOT(devfn) == SB_SLOT)))
+
+static u32 *hdr_addr(const u32 *hdr, int reg)
+{
+ u32 addr;
+
+ /*
+ * This is a little bit tricky. The header maps consist of
+ * 0x20 bytes of size masks, followed by 0x70 bytes of header data.
+ * In the normal case, when not probing a BAR's size, we want
+ * to access the header data, so we add 0x20 to the reg offset,
+ * thus skipping the size mask area.
+ * In the BAR probing case, we want to access the size mask for
+ * the BAR, so we subtract 0x10 (the config header offset for
+ * BAR0), and don't skip the size mask area.
+ */
+
+ addr = (u32)hdr + reg + (bar_probing ? -0x10 : 0x20);
+
+ bar_probing = 0;
+ return (u32 *)addr;
+}
+
+static int pci_olpc_read(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value)
+{
+ u32 *addr;
+
+ /* Use the hardware mechanism for non-simulated devices */
+ if (!SIMULATED(bus, devfn))
+ return pci_conf1_read(seg, bus, devfn, reg, len, value);
+
+ /*
+ * No device has config registers past 0x70, so we save table space
+ * by not storing entries for the nonexistent registers
+ */
+ if (reg >= 0x70)
+ addr = &zero_loc;
+ else {
+ switch (devfn) {
+ case 0x8:
+ addr = hdr_addr(is_lx ? lxnb_hdr : gxnb_hdr, reg);
+ break;
+ case 0x9:
+ addr = hdr_addr(is_lx ? lxfb_hdr : gxfb_hdr, reg);
+ break;
+ case 0xa:
+ addr = is_lx ? hdr_addr(aes_hdr, reg) : &ff_loc;
+ break;
+ case 0x78:
+ addr = hdr_addr(isa_hdr, reg);
+ break;
+ case 0x7b:
+ addr = hdr_addr(ac97_hdr, reg);
+ break;
+ case 0x7c:
+ addr = hdr_addr(ohci_hdr, reg);
+ break;
+ case 0x7d:
+ addr = hdr_addr(ehci_hdr, reg);
+ break;
+ default:
+ addr = &ff_loc;
+ break;
+ }
+ }
+ switch (len) {
+ case 1:
+ *value = *(u8 *) addr;
+ break;
+ case 2:
+ *value = *(u16 *) addr;
+ break;
+ case 4:
+ *value = *addr;
+ break;
+ default:
+ BUG();
+ }
+
+ return 0;
+}
+
+static int pci_olpc_write(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value)
+{
+ /* Use the hardware mechanism for non-simulated devices */
+ if (!SIMULATED(bus, devfn))
+ return pci_conf1_write(seg, bus, devfn, reg, len, value);
+
+ /* XXX we may want to extend this to simulate EHCI power management */
+
+ /*
+ * Mostly we just discard writes, but if the write is a size probe
+ * (i.e. writing ~0 to a BAR), we remember it and arrange to return
+ * the appropriate size mask on the next read. This is cheating
+ * to some extent, because it depends on the fact that the next
+ * access after such a write will always be a read to the same BAR.
+ */
+
+ if ((reg >= 0x10) && (reg < 0x2c)) {
+ /* Write is to a BAR */
+ if (value == ~0)
+ bar_probing = 1;
+ } else {
+ /*
+ * No warning on writes to ROM BAR, CMD, LATENCY_TIMER,
+ * CACHE_LINE_SIZE, or PM registers.
+ */
+ if ((reg != 0x30) && (reg != 0x04) && (reg != 0x0d) &&
+ (reg != 0x0c) && (reg != 0x44))
+ printk(KERN_WARNING "OLPC PCI: Config write to devfn %x reg %x value %x\n", devfn, reg, value);
+ }
+
+ return 0;
+}
+
+static struct pci_raw_ops pci_olpc_conf = {
+ .read = pci_olpc_read,
+ .write = pci_olpc_write,
+};
+
+void __init pci_olpc_init(void)
+{
+ if (!machine_is_olpc() || olpc_has_vsa())
+ return;
+
+ printk(KERN_INFO "PCI: Using configuration type OLPC\n");
+ raw_pci_ops = &pci_olpc_conf;
+ is_lx = is_geode_lx();
+}
diff -purN linux_2.6.24_org/Documentation/kernel-parameters.txt linux_2.6.24_olpc/Documentation/kernel-parameters.txt
--- linux_2.6.24_org/Documentation/kernel-parameters.txt 2008-02-15 20:12:29.000000000 +0000
+++ linux_2.6.24_olpc/Documentation/kernel-parameters.txt 2008-02-15 18:59:54.000000000 +0000
@@ -1244,6 +1244,13 @@ and is between 256 and 4096 characters.
nr_uarts= [SERIAL] maximum number of UARTs to be registered.
+ olpc_ec_timeout= [OLPC] ms delay when issuing EC commands
+ Rather than timing out after 20 ms if an EC
+ command is not properly ACKed, override the length
+ of the timeout. We have interrupts disabled while
+ waiting for the ACK, so if this is set too high
+ interrupts *may* be lost!
+
opl3= [HW,OSS]
Format: <io>
diff -purN linux_2.6.24_org/drivers/base/dd.c linux_2.6.24_olpc/drivers/base/dd.c
--- linux_2.6.24_org/drivers/base/dd.c 2008-02-15 20:11:29.000000000 +0000
+++ linux_2.6.24_olpc/drivers/base/dd.c 2008-02-15 18:58:46.000000000 +0000
@@ -293,7 +293,6 @@ static void __device_release_driver(stru
if (drv) {
driver_sysfs_remove(dev);
sysfs_remove_link(&dev->kobj, "driver");
- klist_remove(&dev->knode_driver);
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->bus_notifier,
@@ -306,6 +305,7 @@ static void __device_release_driver(stru
drv->remove(dev);
devres_release_all(dev);
dev->driver = NULL;
+ klist_remove(&dev->knode_driver);
put_driver(drv);
}
}
diff -purN linux_2.6.24_org/drivers/char/vt_ioctl.c linux_2.6.24_olpc/drivers/char/vt_ioctl.c
--- linux_2.6.24_org/drivers/char/vt_ioctl.c 2008-02-15 20:11:48.000000000 +0000
+++ linux_2.6.24_olpc/drivers/char/vt_ioctl.c 2008-02-15 18:59:11.000000000 +0000
@@ -38,6 +38,9 @@
char vt_dont_switch;
extern struct tty_driver *console_driver;
+/* Add a notifier chain to inform drivers of a VT_TEXT/VT_GRAPHICS switch */
+RAW_NOTIFIER_HEAD(console_notifier_list);
+
#define VT_IS_IN_USE(i) (console_driver->ttys[i] && console_driver->ttys[i]->count)
#define VT_BUSY(i) (VT_IS_IN_USE(i) || i == fg_console || vc_cons[i].d == sel_cons)
@@ -492,6 +495,14 @@ int vt_ioctl(struct tty_struct *tty, str
vc->vc_mode = (unsigned char) arg;
if (console != fg_console)
return 0;
+
+ /* Notify listeners if the current fg_console has switched */
+
+ raw_notifier_call_chain(&console_notifier_list,
+ (arg == KD_TEXT) ?
+ CONSOLE_EVENT_SWITCH_TEXT :
+ CONSOLE_EVENT_SWITCH_GRAPHICS, 0);
+
/*
* explicitly blank/unblank the screen if switching modes
*/
diff -purN linux_2.6.24_org/drivers/i2c/busses/scx200_acb.c linux_2.6.24_olpc/drivers/i2c/busses/scx200_acb.c
--- linux_2.6.24_org/drivers/i2c/busses/scx200_acb.c 2008-02-15 20:11:33.000000000 +0000
+++ linux_2.6.24_olpc/drivers/i2c/busses/scx200_acb.c 2008-02-15 18:58:49.000000000 +0000
@@ -46,6 +46,10 @@ static int base[MAX_DEVICES] = { 0x820,
module_param_array(base, int, NULL, 0);
MODULE_PARM_DESC(base, "Base addresses for the ACCESS.bus controllers");
+static unsigned int smbclk = 0x70;
+module_param(smbclk, uint, 0);
+MODULE_PARM_DESC(smbclk, "Specify the SMB_CLK value");
+
#define POLL_TIMEOUT (HZ/5)
enum scx200_acb_state {
@@ -108,6 +112,7 @@ struct scx200_acb_iface {
#define ACBADDR (iface->base + 4)
#define ACBCTL2 (iface->base + 5)
#define ACBCTL2_ENABLE 0x01
+#define ACBCTL3 (iface->base + 6)
/************************************************************************/
@@ -392,11 +397,13 @@ static __init int scx200_acb_probe(struc
{
u8 val;
- /* Disable the ACCESS.bus device and Configure the SCL
- frequency: 16 clock cycles */
- outb(0x70, ACBCTL2);
+ /* Disable the ACCESS.bus device and Configure the SCL */
+
+ outb((smbclk & 0x7F) << 1, ACBCTL2);
+
+ outb((smbclk >> 7) & 0xFF, ACBCTL3);
- if (inb(ACBCTL2) != 0x70) {
+ if (inb(ACBCTL2) != ((smbclk & 0x7F) << 1)) {
pr_debug(NAME ": ACBCTL2 readback failed\n");
return -ENXIO;
}
diff -purN linux_2.6.24_org/drivers/input/keyboard/atkbd.c linux_2.6.24_olpc/drivers/input/keyboard/atkbd.c
--- linux_2.6.24_org/drivers/input/keyboard/atkbd.c 2008-02-15 20:11:51.000000000 +0000
+++ linux_2.6.24_olpc/drivers/input/keyboard/atkbd.c 2008-02-15 18:59:14.000000000 +0000
@@ -63,12 +63,25 @@ static int atkbd_extra;
module_param_named(extra, atkbd_extra, bool, 0);
MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
+#define ATKBD_KEY_UNKNOWN 0
+#define ATKBD_KEY_NULL 0xFF0000FF
+
+#define ATKBD_SCR_1 0xFF0000FE
+#define ATKBD_SCR_2 0xFF0000FD
+#define ATKBD_SCR_4 0xFF0000FC
+#define ATKBD_SCR_8 0xFF0000FB
+#define ATKBD_SCR_CLICK 0xFF0000FA
+#define ATKBD_SCR_LEFT 0xFF0000F9
+#define ATKBD_SCR_RIGHT 0xFF0000F8
+
+#define ATKBD_SPECIAL 0xFF0000F8
+
/*
* Scancode to keycode tables. These are just the default setting, and
* are loadable via an userland utility.
*/
-static unsigned char atkbd_set2_keycode[512] = {
+static unsigned int atkbd_set2_keycode[512] = {
#ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
@@ -87,11 +100,17 @@ static unsigned char atkbd_set2_keycode[
82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
+
+ 217,100,ATKBD_KEY_NULL, 0, 97,165, 0, 0,
+ 156, 0, 0, 0, 0, 0, 0,125,
+
173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
- 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
+
+ 226, 0, 0, 0, 0, 0, 0, 0,
+ 0,ATKBD_KEY_NULL, 96, 0, 0, 0,143, 0,
+
0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
@@ -150,19 +169,6 @@ static unsigned char atkbd_unxlate_table
#define ATKBD_RET_HANGEUL 0xf2
#define ATKBD_RET_ERR 0xff
-#define ATKBD_KEY_UNKNOWN 0
-#define ATKBD_KEY_NULL 255
-
-#define ATKBD_SCR_1 254
-#define ATKBD_SCR_2 253
-#define ATKBD_SCR_4 252
-#define ATKBD_SCR_8 251
-#define ATKBD_SCR_CLICK 250
-#define ATKBD_SCR_LEFT 249
-#define ATKBD_SCR_RIGHT 248
-
-#define ATKBD_SPECIAL 248
-
#define ATKBD_LED_EVENT_BIT 0
#define ATKBD_REP_EVENT_BIT 1
@@ -174,7 +180,7 @@ static unsigned char atkbd_unxlate_table
#define ATKBD_XL_HANJA 0x20
static struct {
- unsigned char keycode;
+ unsigned int keycode;
unsigned char set2;
} atkbd_scroll_keys[] = {
{ ATKBD_SCR_1, 0xc5 },
@@ -200,7 +206,7 @@ struct atkbd {
char phys[32];
unsigned short id;
- unsigned char keycode[512];
+ unsigned int keycode[512];
unsigned char set;
unsigned char translated;
unsigned char extra;
@@ -351,7 +357,7 @@ static irqreturn_t atkbd_interrupt(struc
unsigned int code = data;
int scroll = 0, hscroll = 0, click = -1, add_release_event = 0;
int value;
- unsigned char keycode;
+ unsigned int keycode;
#ifdef ATKBD_DEBUG
printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
@@ -856,9 +862,11 @@ static void atkbd_set_keycode_table(stru
atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
}
} else if (atkbd->set == 3) {
- memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
+ for (i = 0; i < ARRAY_SIZE(atkbd_set3_keycode); i++)
+ atkbd->keycode[i] = atkbd_set3_keycode[i];
} else {
- memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
+ for (i = 0; i < ARRAY_SIZE(atkbd_set2_keycode); i++)
+ atkbd->keycode[i] = atkbd_set2_keycode[i];
if (atkbd->scroll)
for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++)
@@ -930,8 +938,8 @@ static void atkbd_set_device_attrs(struc
}
input_dev->keycode = atkbd->keycode;
- input_dev->keycodesize = sizeof(unsigned char);
- input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
+ input_dev->keycodesize = sizeof(unsigned int);
+ input_dev->keycodemax = ARRAY_SIZE(atkbd->keycode);
for (i = 0; i < 512; i++)
if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
@@ -1022,6 +1030,10 @@ static int atkbd_connect(struct serio *s
return err;
}
+#ifdef CONFIG_OLPC
+#include <asm/olpc.h>
+#endif
+
/*
* atkbd_reconnect() tries to restore keyboard into a sane state and is
* most likely called on resume.
@@ -1032,6 +1044,12 @@ static int atkbd_reconnect(struct serio
struct atkbd *atkbd = serio_get_drvdata(serio);
struct serio_driver *drv = serio->drv;
+#ifdef CONFIG_OLPC
+ if (olpc_board_at_least(olpc_board_pre(0xb3)))
+ if (serio->dev.power.power_state.event != PM_EVENT_ON)
+ return 0;
+#endif
+
if (!atkbd || !drv) {
printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
return -1;
diff -purN linux_2.6.24_org/drivers/input/mouse/Kconfig linux_2.6.24_olpc/drivers/input/mouse/Kconfig
--- linux_2.6.24_org/drivers/input/mouse/Kconfig 2008-02-15 20:11:51.000000000 +0000
+++ linux_2.6.24_olpc/drivers/input/mouse/Kconfig 2008-02-15 18:59:14.000000000 +0000
@@ -96,6 +96,16 @@ config MOUSE_PS2_TOUCHKIT
If unsure, say N.
+config MOUSE_PS2_OLPC
+ bool "OLPC PS/2 mouse protocol extension" if EMBEDDED
+ default n
+ depends on MOUSE_PS2 && OLPC
+ ---help---
+ Say Y here if you have an OLPC PS/2 touchpad connected to
+ your system.
+
+ If unsure, say N.
+
config MOUSE_SERIAL
tristate "Serial mouse"
select SERIO
diff -purN linux_2.6.24_org/drivers/input/mouse/Makefile linux_2.6.24_olpc/drivers/input/mouse/Makefile
--- linux_2.6.24_org/drivers/input/mouse/Makefile 2008-02-15 20:11:51.000000000 +0000
+++ linux_2.6.24_olpc/drivers/input/mouse/Makefile 2008-02-15 18:59:14.000000000 +0000
@@ -24,3 +24,4 @@ psmouse-$(CONFIG_MOUSE_PS2_LOGIPS2PP) +=
psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK) += lifebook.o
psmouse-$(CONFIG_MOUSE_PS2_TRACKPOINT) += trackpoint.o
psmouse-$(CONFIG_MOUSE_PS2_TOUCHKIT) += touchkit_ps2.o
+psmouse-$(CONFIG_MOUSE_PS2_OLPC) += olpc.o
diff -purN linux_2.6.24_org/drivers/input/mouse/olpc.c linux_2.6.24_olpc/drivers/input/mouse/olpc.c
--- linux_2.6.24_org/drivers/input/mouse/olpc.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/input/mouse/olpc.c 2008-02-15 18:59:14.000000000 +0000
@@ -0,0 +1,837 @@
+/*
+ * OLPC touchpad PS/2 mouse driver
+ *
+ * Copyright (c) 2006-2008 One Laptop Per Child
+ * Authors:
+ * Zephaniah E. Hull
+ * Andres Salomon <dilinger@laptop.org>
+ *
+ * This driver is partly based on the ALPS driver, which is:
+ *
+ * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
+ * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
+ * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * The touchpad on the OLPC is fairly wide, with the entire area usable
+ * as a tablet (Pen Tablet/PT), and the center 1/3rd also usable as a
+ * touchpad (Glide Sensor/GS). The spec from ALPS is available from
+ * <http://wiki.laptop.org/go/Touch_Pad/Tablet>. It refers to this
+ * device as HGPK (Hybrid GS, PT, and Keymatrix).
+ *
+ * Earlier version of the device had simultaneous reporting; however, that
+ * was removed. Instead, the device now reports packets in one mode, and
+ * tells the driver when a mode switch needs to happen.
+ */
+
+#define DEBUG
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/libps2.h>
+#include <linux/delay.h>
+#include <asm/olpc.h>
+
+#include "psmouse.h"
+#include "olpc.h"
+
+static int tpdebug;
+module_param(tpdebug, int, 0644);
+
+static int ignore_delta = 60;
+module_param(ignore_delta, int, 0644);
+MODULE_PARM_DESC(ignore_delta, "ignore packets that cause an X or Y delta larger than this value.");
+
+/*
+ * With older hardware, a finger-up event is sometimes not sent. If it's been
+ * more than 50mS since the last packet, we can safely assume that there was
+ * a finger-up event that we never received.
+ */
+static void hgpk_fingerup_hack(struct psmouse *psmouse, struct hgpk_packet *p)
+{
+ struct hgpk_data *priv = psmouse->private;
+ struct timeval now_tv;
+ s64 now_ns;
+
+ if (psmouse->model >= HGPK_MODEL_C)
+ return;
+
+ if (p->gs_down || p->pt_down) {
+ do_gettimeofday(&now_tv);
+ now_ns = timeval_to_ns(&now_tv);
+
+ if (priv->late && now_ns >= priv->late) {
+ struct input_dev *pt = psmouse->dev;
+ struct input_dev *gs = priv->gs;
+
+ input_report_key(pt, BTN_TOUCH, 0);
+ input_report_key(gs, BTN_TOUCH, 0);
+ input_sync(pt);
+ input_sync(gs);
+ hgpk_dbg(psmouse, "Missing finger-up packet detected, "
+ "working around buggy hardware.\n");
+ }
+ priv->late = now_ns + (50 * NSEC_PER_MSEC);
+ } else
+ priv->late = 0;
+}
+
+/*
+ * C and D series touchpads send an extra finger-up packet to ensure we've
+ * seen it. That's all well and good, but for some uncomprehensible reason
+ * they sometimes also get stuck in a state where they also send an
+ * extra finger-down packet with coordinates of x=0, y=0. This royally
+ * screws relative positioning; end users see it as the touchpad jumping
+ * around when they first put their finger down. This works around that.
+ *
+ * *Sigh*. ALPS..
+ */
+static void hgpk_fingerdown_hack(struct psmouse *psmouse, struct hgpk_packet *p)
+{
+ if (psmouse->model < HGPK_MODEL_C)
+ return;
+
+ /* we only care about x=0, y=0 packets */
+ if (p->x != 0 || p->y != 0)
+ return;
+
+ /*
+ * if we're a gs_down packet but we were not previously down,
+ * we're going to assume that this is one of those spurious packets
+ * that needs to be worked around.
+ */
+ if (p->gs_down && !test_bit(BTN_TOUCH, p->dev->key)) {
+ hgpk_dbg(psmouse, "spurious GS finger-down packet\n");
+ p->gs_down = 0;
+ } else if (p->pt_down && !test_bit(BTN_TOUCH, p->dev->key)) {
+ hgpk_dbg(psmouse, "spurious PT finger-down packet\n");
+ p->pt_down = 0;
+ }
+}
+
+/*
+ * In general, we have lots of calibration problems that manifest
+ * themselves as jumpy mouse pointers. Miscalibration, capacitance issues
+ * with the hardware, etc; these make the touchpad detect errant packets
+ * at random places all over the place. Since we don't expect large deltas
+ * to ever actually be useful, we'll large axis changes that go over our
+ * threshold.
+ */
+static void hgpk_big_delta_hack(struct psmouse *psmouse, struct hgpk_packet *p)
+{
+ struct hgpk_data *priv = psmouse->private;
+ struct input_dev *dev = p->dev;
+
+ /* afaik, this happens on all hardware */
+
+ /* ignore finger-up packets */
+ if (!p->pt_down && !p->gs_down)
+ goto done;
+
+ /* ensure that we're not a finger-down packet */
+ if ((p->pt_down && !test_bit(BTN_TOUCH, dev->key)) ||
+ (p->gs_down && !test_bit(BTN_TOUCH, dev->key)))
+ goto done;
+
+ if (abs(dev->abs[ABS_X] - p->x) > ignore_delta ||
+ abs(dev->abs[ABS_Y] - p->y) > ignore_delta) {
+ hgpk_dbg(psmouse, "axis change (%d,%d) => (%d,%d) is over "
+ "delta threshold\n", dev->abs[ABS_X],
+ dev->abs[ABS_Y], p->x, p->y);
+ input_report_key(dev, BTN_TOUCH, 0);
+ input_sync(dev);
+
+
+ /* two in a row is a pretty good indicator of miscalibration */
+ if (priv->axis_errors++) {
+ /* wait 2s for finger removal, and then recalibrate */
+ queue_delayed_work(kpsmoused_wq, &priv->recalib_wq,
+ msecs_to_jiffies(2000));
+ priv->axis_errors = 0;
+ }
+ return;
+ }
+done:
+ priv->axis_errors = 0;
+}
+
+/*
+ * This is my favorite touchpad hardware bug. I'm entirely not sure what
+ * triggers it (I've seen it triggered while the laptop was left on overnight,
+ * but my cat could have very well been using it/sleeping on it). However,
+ * the touchpad will randomly get stuck in a state where it constantly spews
+ * packets without a finger being on it. A recalibration will fix it, but
+ * without that it will go on for days (auto-recalibration doesn't catch it,
+ * either). The packets tend to either have the same coordinates, or be
+ * 1px away from each other; ie, (283,139,6) -> (284,139,5) -> (285,139,5) ->
+ * (286,139,6) -> (286,139,6) -> etc. We have a number of workarounds here..
+ */
+static void hgpk_spewing_hack(struct psmouse *psmouse, struct hgpk_packet *p)
+{
+ struct hgpk_data *priv = psmouse->private;
+ struct input_dev *dev = p->dev;
+ int repeat_axes;
+
+ if (psmouse->model < HGPK_MODEL_C)
+ return;
+
+ /* ignore 0, 0 packets */
+ if (p->x == 0 && p->y == 0)
+ return;
+
+ /* PT packets don't count */
+ if (p->pt_down) {
+ priv->repeat_pkts = 0;
+ return;
+ }
+
+ /*
+ * If we see 2s+ worth of packets that have at least 2 axis deltas of
+ * only 1px, that's a good indication that we're spewing packets.
+ * We're going to ignore z=15, though; that's pretty indicative of
+ * an actual finger on the touchpad just staying still.
+ */
+ if (p->z == 0 || p->z == 15)
+ goto next_hack;
+ repeat_axes = abs(p->x - dev->abs[ABS_X]) < 2 ? 1 : 0;
+ repeat_axes += abs(p->y - dev->abs[ABS_Y]) < 2 ? 1 : 0;
+ repeat_axes += abs(p->z - dev->abs[ABS_PRESSURE]) < 2 ? 1 : 0;
+ if (repeat_axes > 1) {
+ priv->repeat_pkts++;
+ /* we get 1 packet about every 24mS */
+ if (priv->repeat_pkts > 83) {
+ queue_delayed_work(kpsmoused_wq, &priv->recalib_wq, 0);
+ priv->repeat_pkts = 0;
+ }
+ }
+ else
+ priv->repeat_pkts = 0;
+ return;
+
+next_hack:
+ /*
+ * 10s of y and z not changing is another kind of miscalibration.
+ */
+ repeat_axes = (p->y == dev->abs[ABS_Y]) ? 1 : 0;
+ repeat_axes += (p->z == dev->abs[ABS_PRESSURE]) ? 1 : 0;
+ if (repeat_axes > 1) {
+ priv->repeat_pkts++;
+ if (priv->repeat_pkts > 416) {
+ queue_delayed_work(kpsmoused_wq, &priv->recalib_wq, 0);
+ priv->repeat_pkts = 0;
+ }
+ }
+ else
+ priv->repeat_pkts = 0;
+}
+
+/*
+ * HGPK Advanced Mode - single-mode format
+ *
+ * byte 0(PT): 1 1 0 0 1 1 1 1
+ * byte 0(GS): 1 1 1 1 1 1 1 1
+ * byte 1: 0 x6 x5 x4 x3 x2 x1 x0
+ * byte 2(PT): 0 0 x9 x8 x7 ? pt-dsw 0
+ * byte 2(GS): 0 x10 x9 x8 x7 ? gs-dsw pt-dsw
+ * byte 3: 0 y9 y8 y7 1 0 swr swl
+ * byte 4: 0 y6 y5 y4 y3 y2 y1 y0
+ * byte 5: 0 z6 z5 z4 z3 z2 z1 z0
+ *
+ * ?'s are not defined in the protocol spec, may vary between models.
+ *
+ * swr/swl are the left/right buttons.
+ *
+ * pt-dsw/gs-dsw indicate that the pt/gs sensor is detecting a
+ * pen/finger
+ */
+
+static int hgpk_validate_byte(unsigned char *packet, int pktcnt)
+{
+ BUG_ON(pktcnt < 1);
+
+ if (packet[0] != HGPK_PT && packet[0] != HGPK_GS)
+ return -1;
+
+ /* bytes 2 - 6 should have 0 in the highest bit */
+ if (pktcnt >= 2 && pktcnt <= 6 && (packet[pktcnt - 1] & 0x80))
+ return -1;
+
+ return 0;
+}
+
+static void hgpk_decode_packet(struct psmouse *psmouse, struct hgpk_packet *p)
+{
+ unsigned char *packet = psmouse->packet;
+
+ BUG_ON(psmouse->pktcnt < 6);
+
+ p->left = packet[3] & 1;
+ p->right = !!(packet[3] & 2);
+ p->x = packet[1] | ((packet[2] & 0x78) << 4);
+ p->y = packet[4] | ((packet[3] & 0x70) << 3);
+ p->z = packet[5];
+
+ if (packet[0] == HGPK_GS) {
+ p->pt_down = !!(packet[2] & 1);
+ p->gs_down = !!(packet[2] & 2);
+ p->dev = ((struct hgpk_data *) psmouse->private)->gs;
+ if (p->pt_down) {
+ /* we miss spurious PT finger-downs if pt_down is set */
+ p->mode_switch = HGPK_PT;
+ p->pt_down = 0;
+ } else {
+ p->mode_switch = 0;
+ }
+ } else if (packet[0] == HGPK_PT) {
+ p->pt_down = !!(packet[2] & 2);
+ p->gs_down = 0;
+ p->dev = psmouse->dev;
+ p->mode_switch = !p->pt_down ? HGPK_GS : 0;
+ }
+
+ if (tpdebug) {
+ hgpk_dbg(psmouse, "l=%d r=%d p=%d g=%d x=%d y=%d z=%d m=%x\n",
+ p->left, p->right, p->pt_down, p->gs_down,
+ p->x, p->y, p->z, p->mode_switch);
+ }
+}
+
+static void hgpk_process_packet_gspt(struct psmouse *psmouse)
+{
+ struct hgpk_data *priv = psmouse->private;
+ struct input_dev *pt = psmouse->dev;
+ struct input_dev *gs = priv->gs;
+ struct hgpk_packet pkt;
+
+ hgpk_decode_packet(psmouse, &pkt);
+
+ hgpk_fingerup_hack(psmouse, &pkt);
+ hgpk_fingerdown_hack(psmouse, &pkt);
+ hgpk_big_delta_hack(psmouse, &pkt);
+ hgpk_spewing_hack(psmouse, &pkt);
+
+ input_report_key(pt, BTN_LEFT, pkt.left);
+ input_report_key(pt, BTN_RIGHT, pkt.right);
+ input_report_key(pt, BTN_TOUCH, pkt.pt_down);
+
+ input_report_key(gs, BTN_LEFT, pkt.left);
+ input_report_key(gs, BTN_RIGHT, pkt.right);
+ input_report_key(gs, BTN_TOUCH, pkt.gs_down);
+
+ input_report_abs(pkt.dev, ABS_X, pkt.x);
+ input_report_abs(pkt.dev, ABS_Y, pkt.y);
+ input_report_abs(pkt.dev, ABS_PRESSURE, pkt.z);
+
+ input_sync(pt);
+ input_sync(gs);
+
+ if (priv->recalib_window) {
+ if (time_before(jiffies, priv->recalib_window)) {
+ /*
+ * ugh, got a packet inside our recalibration
+ * window, schedule another recalibration.
+ */
+ hgpk_dbg(psmouse, "packet inside calibration window, "
+ "queueing another recalibration\n");
+ queue_delayed_work(kpsmoused_wq, &priv->recalib_wq,
+ msecs_to_jiffies(1000));
+ }
+ priv->recalib_window = 0;
+ }
+
+ if (psmouse->model != HGPK_MODEL_A) {
+ if (priv->pending_mode && (!pkt.mode_switch ||
+ priv->current_mode == pkt.mode_switch)) {
+ priv->pending_mode = 0;
+ cancel_delayed_work(&priv->switch_wq);
+ }
+ else if (priv->pending_mode != pkt.mode_switch) {
+ priv->pending_mode = pkt.mode_switch;
+
+ /* allow for spurious mode_switch packets by delaying */
+ queue_delayed_work(kpsmoused_wq, &priv->switch_wq,
+ msecs_to_jiffies(50));
+ }
+ }
+}
+
+static psmouse_ret_t hgpk_process_byte(struct psmouse *psmouse)
+{
+ if (hgpk_validate_byte(psmouse->packet, psmouse->pktcnt)) {
+ hgpk_dbg(psmouse, "%s: (%d) %02x %02x %02x %02x %02x %02x\n",
+ __func__, psmouse->pktcnt, psmouse->packet[0],
+ psmouse->packet[1], psmouse->packet[2],
+ psmouse->packet[3], psmouse->packet[4],
+ psmouse->packet[5]);
+ return PSMOUSE_BAD_DATA;
+ }
+
+ if (psmouse->pktcnt == 6) {
+ hgpk_process_packet_gspt(psmouse);
+ return PSMOUSE_FULL_PACKET;
+ }
+
+ return PSMOUSE_GOOD_DATA;
+}
+
+static int hgpk_force_recalibrate(struct psmouse *psmouse)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ struct hgpk_data *priv = psmouse->private;
+ struct input_dev *pt = psmouse->dev;
+ struct input_dev *gs = priv->gs;
+
+ /* C-series touchpads added the recalibrate command */
+ if (psmouse->model < HGPK_MODEL_C)
+ return 0;
+
+ if (ps2_command(ps2dev, NULL, 0xf5) ||
+ ps2_command(ps2dev, NULL, 0xf5) ||
+ ps2_command(ps2dev, NULL, 0xe6) ||
+ ps2_command(ps2dev, NULL, 0xf5))
+ return -1;
+
+ /* send a finger-up event so the cursor doesn't jump around */
+ input_report_key(pt, BTN_TOUCH, 0);
+ input_report_key(gs, BTN_TOUCH, 0);
+ input_sync(pt);
+ input_sync(gs);
+
+ /* according to ALPS, 150mS is required for recalibration */
+ msleep(150);
+
+ /*
+ * XXX: If a finger is down during this delay, recalibration will
+ * detect capacitance incorrectly. This is a hardware bug, and
+ * we may need to work around that here.
+ */
+
+ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
+ return -1;
+
+ /*
+ * After we recalibrate, we shouldn't get any packets for 2s. If
+ * we do, it's likely that someone's finger was on the touchpad.
+ * If someone's finger *was* on the touchpad, it's probably
+ * miscalibrated. So, we should schedule another recalibration
+ */
+ priv->recalib_window = jiffies + msecs_to_jiffies(2000);
+
+ return 0;
+}
+
+static enum hgpk_model_t hgpk_get_model(struct psmouse *psmouse)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ unsigned char param[3];
+
+ /* E7, E7, E7, E9 gets us a 3 byte identifier */
+ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
+ ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
+ return -EIO;
+
+ hgpk_dbg(psmouse, "ID: %02x %02x %02x", param[0], param[1], param[2]);
+
+ /* HGPK signature: 0x67, 0x00, 0x<model> */
+ if (param[0] != 0x67 || param[1] != 0x00)
+ return -ENODEV;
+
+ hgpk_info(psmouse, "OLPC touchpad revision 0x%x\n", param[2]);
+ return param[2];
+}
+
+/*
+ * Touchpad should be disabled before calling this!
+ */
+static int hgpk_new_mode(struct psmouse *psmouse, int mode)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ struct hgpk_data *priv = psmouse->private;
+
+ /*
+ * PT mode: F2, F2, F2, E7
+ * GS mode: F2, F2, F2, E6
+ */
+ if (ps2_command(ps2dev, NULL, 0xF2) ||
+ ps2_command(ps2dev, NULL, 0xF2) ||
+ ps2_command(ps2dev, NULL, 0xF2))
+ return -EIO;
+
+ if (mode == HGPK_GS) {
+ if (ps2_command(ps2dev, NULL, 0xE6))
+ return -EIO;
+ } else {
+ if (ps2_command(ps2dev, NULL, 0xE7))
+ return -EIO;
+ }
+
+ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
+ return -EIO;
+
+ /* tell the irq handler to stop ignoring packets */
+ psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
+
+ priv->current_mode = mode;
+ priv->pending_mode = 0;
+ if (tpdebug)
+ hgpk_warn(psmouse, "Switched to mode 0x%x successful.\n", mode);
+
+ return 0;
+}
+
+static int hgpk_advanced_mode(struct psmouse *psmouse)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+
+ /* Switch to 'Advanced mode.', four disables in a row. */
+ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
+ return -1;
+
+ return hgpk_new_mode(psmouse, HGPK_GS);
+}
+
+/*
+ * This kills power to the touchpad; according to ALPS, current consumption
+ * goes down to 50uA after running this. To turn power back on, we drive
+ * MS-DAT low.
+ */
+static int hgpk_toggle_power(struct psmouse *psmouse, int enable)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ int timeo;
+
+ /* Added on D-series touchpads */
+ if (psmouse->model < HGPK_MODEL_D)
+ return 0;
+
+ if (enable) {
+ psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
+
+ /*
+ * Sending a byte will drive MS-DAT low; this will wake up
+ * the controller. Once we get an ACK back from it, it
+ * means we can continue with the touchpad re-init. ALPS
+ * tells us that 1s should be long enough, so set that as
+ * the upper bound.
+ */
+ for (timeo = 20; timeo > 0; timeo--) {
+ if (!ps2_sendbyte(&psmouse->ps2dev,
+ PSMOUSE_CMD_DISABLE, 20))
+ break;
+ msleep(50);
+ }
+
+ psmouse_reset(psmouse);
+
+ if (hgpk_advanced_mode(psmouse)) {
+ hgpk_err(psmouse, "Failed to reinit touchpad!\n");
+ return -1;
+ }
+ } else {
+ hgpk_dbg(psmouse, "Powering off touchpad.\n");
+ psmouse_set_state(psmouse, PSMOUSE_IGNORE);
+
+ if (ps2_command(ps2dev, NULL, 0xec) ||
+ ps2_command(ps2dev, NULL, 0xec) ||
+ ps2_command(ps2dev, NULL, 0xea))
+ return -1;
+ /* probably won't see an ACK, the touchpad will be off */
+ ps2_sendbyte(&psmouse->ps2dev, 0xec, 20);
+ }
+
+ return 0;
+}
+
+/*
+ * poll the touchpad for current motion packet.
+ * Used in resync.
+ * Note: We can't poll, so always return failure.
+ */
+static int hgpk_poll(struct psmouse *psmouse)
+{
+ return -1;
+}
+
+static int hgpk_reconnect(struct psmouse *psmouse)
+{
+ if (olpc_board_at_least(olpc_board(0xb2)))
+ if (psmouse->ps2dev.serio->dev.power.power_state.event != PM_EVENT_ON)
+ return 0;
+
+ psmouse_reset(psmouse);
+
+ if (hgpk_advanced_mode(psmouse)) {
+ hgpk_err(psmouse, "failed to reenable advanced mode.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static ssize_t hgpk_show_powered(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct serio *serio = to_serio_port(dev);
+ struct psmouse *psmouse;
+ struct hgpk_data *priv;
+ int retval;
+
+ retval = serio_pin_driver(serio);
+ if (retval)
+ return retval;
+
+ psmouse = serio_get_drvdata(serio);
+ priv = psmouse->private;
+
+ retval = sprintf(buf, "%d\n", priv->powered);
+ serio_unpin_driver(serio);
+ return retval;
+}
+
+static ssize_t hgpk_set_powered(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct serio *serio = to_serio_port(dev);
+ struct psmouse *psmouse;
+ struct hgpk_data *priv;
+ unsigned long val;
+ int retval;
+
+ if (*buf == '1')
+ val = 1;
+ else if (*buf == '0')
+ val = 0;
+ else
+ return -EINVAL;
+
+ retval = serio_pin_driver(serio);
+ if (retval)
+ return retval;
+
+/*
+ * FUCK IT. I don't fucking care. locking in psmouse is fucking retarded!
+ retval = mutex_lock_interruptible(&psmouse_mutex);
+ if (retval)
+ goto out_unpin;
+*/
+
+ psmouse = serio_get_drvdata(serio);
+ priv = psmouse->private;
+
+ if (val == priv->powered)
+ goto done;
+
+ retval = hgpk_toggle_power(psmouse, val);
+ if (!retval)
+ priv->powered = val;
+
+done:
+ serio_unpin_driver(serio);
+ return retval ? retval : count;
+}
+
+static DEVICE_ATTR(powered, S_IWUSR | S_IRUGO, hgpk_show_powered,
+ hgpk_set_powered);
+
+static void hgpk_disconnect(struct psmouse *psmouse)
+{
+ struct hgpk_data *priv = psmouse->private;
+
+ device_remove_file(&psmouse->ps2dev.serio->dev, &dev_attr_powered);
+ psmouse_reset(psmouse);
+ flush_scheduled_work();
+ input_unregister_device(priv->gs);
+ kfree(priv);
+}
+
+static void hgpk_mode_switch(struct work_struct *work)
+{
+ struct delayed_work *w = container_of(work, struct delayed_work, work);
+ struct hgpk_data *priv = container_of(w, struct hgpk_data, switch_wq);
+ struct psmouse *psmouse = priv->psmouse;
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ int pending_mode;
+
+ if (tpdebug)
+ hgpk_dbg(psmouse, "Starting mode switch to 0x%x. [%lu]\n",
+ priv->pending_mode, jiffies);
+
+ if (priv->pending_mode == priv->current_mode) {
+ priv->pending_mode = 0;
+ hgpk_dbg(psmouse, "Already in target mode, no-op.\n");
+ return;
+ }
+
+ /* tell the irq handler to ignore any further packets */
+ psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
+ priv->late = 0;
+
+ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
+ goto bad;
+
+ /*
+ * ALPS tells us that it may take up to 20msec for the disable to
+ * take effect; however, ps2_command() will wait up to 200msec for
+ * the ACK to come back (and I'm assuming that by the time the
+ * hardware sends back its ACK, it has stopped sending bytes).
+ */
+ pending_mode = priv->pending_mode;
+
+ if (hgpk_new_mode(psmouse, priv->pending_mode))
+ goto bad;
+
+ /*
+ * Deal with a potential race condition.
+ *
+ * If there is a brief tap of a stylus or a fingernail that
+ * triggers a mode switch to PT mode, and the stylus/fingernail is
+ * lifted after the DISABLE above, but before we reenable in the
+ * new mode then we can get stuck in PT mode.
+ */
+ if (pending_mode == HGPK_PT) {
+ priv->pending_mode = HGPK_GS;
+ queue_delayed_work(kpsmoused_wq, &priv->switch_wq,
+ msecs_to_jiffies(50));
+ }
+
+ return;
+bad:
+ hgpk_warn(psmouse, "Failure to switch modes, resetting device...\n");
+ hgpk_reconnect(psmouse);
+}
+
+static void hgpk_recalib_work(struct work_struct *work)
+{
+ struct delayed_work *w = container_of(work, struct delayed_work, work);
+ struct hgpk_data *priv = container_of(w, struct hgpk_data, recalib_wq);
+ struct psmouse *psmouse = priv->psmouse;
+
+ if (tpdebug)
+ hgpk_dbg(psmouse, "Recalibrating touchpad..\n");
+
+ if (hgpk_force_recalibrate(psmouse))
+ hgpk_err(psmouse, "Recalibration failed!\n");
+}
+
+int olpc_init(struct psmouse *psmouse)
+{
+ struct hgpk_data *priv;
+ struct input_dev *pt = psmouse->dev;
+ struct input_dev *gs;
+
+ priv = kzalloc(sizeof(struct hgpk_data), GFP_KERNEL);
+ gs = input_allocate_device();
+ if (!priv || !gs)
+ goto init_fail;
+
+ psmouse->private = priv;
+ priv->gs = gs;
+ priv->psmouse = psmouse;
+ priv->powered = 1;
+
+ psmouse_reset(psmouse);
+
+ if (hgpk_advanced_mode(psmouse)) {
+ hgpk_err(psmouse, "failed to enable advanced mode\n");
+ goto init_fail;
+ }
+
+ /* Unset things that psmouse-base sets that we don't have */
+ pt->evbit[0] &= ~BIT(EV_REL);
+ pt->keybit[LONG(BTN_MOUSE)] &= ~BIT(BTN_MIDDLE);
+ pt->relbit[0] &= ~(BIT(REL_X) | BIT(REL_Y));
+
+ /* Set all the things we *do* have */
+ set_bit(EV_KEY, pt->evbit);
+ set_bit(EV_ABS, pt->evbit);
+
+ set_bit(BTN_LEFT, pt->keybit);
+ set_bit(BTN_RIGHT, pt->keybit);
+ set_bit(BTN_TOUCH, pt->keybit);
+
+ input_set_abs_params(pt, ABS_X, 2, 1000, 0, 0);
+ input_set_abs_params(pt, ABS_Y, 0, 717, 0, 0);
+ input_set_abs_params(pt, ABS_PRESSURE, 0, 127, 0, 0);
+
+ snprintf(priv->phys, sizeof(priv->phys),
+ "%s/input1", psmouse->ps2dev.serio->phys);
+ gs->phys = priv->phys;
+ gs->name = "OLPC ALPS GlideSensor";
+ gs->id.bustype = BUS_I8042;
+ gs->id.vendor = 0x0002;
+ gs->id.product = PSMOUSE_OLPC;
+ gs->id.version = psmouse->model;
+
+ set_bit(EV_KEY, gs->evbit);
+ set_bit(EV_ABS, gs->evbit);
+
+ set_bit(BTN_LEFT, gs->keybit);
+ set_bit(BTN_RIGHT, gs->keybit);
+ set_bit(BTN_TOUCH, gs->keybit);
+
+ input_set_abs_params(gs, ABS_X, 350, 512, 0, 0);
+ input_set_abs_params(gs, ABS_Y, 70, 325, 0, 0);
+ input_set_abs_params(gs, ABS_PRESSURE, 0, 15, 0, 0);
+
+ if (input_register_device(gs)) {
+ hgpk_err(psmouse, "Failed to register GlideSensor\n");
+ goto init_fail;
+ }
+
+ psmouse->protocol_handler = hgpk_process_byte;
+ psmouse->poll = hgpk_poll;
+ psmouse->disconnect = hgpk_disconnect;
+ psmouse->reconnect = hgpk_reconnect;
+ psmouse->pktsize = 6;
+
+ /* Disable the idle resync. */
+ psmouse->resync_time = 0;
+ /* Reset after a lot of bad bytes. */
+ psmouse->resetafter = 1024;
+
+ INIT_DELAYED_WORK(&priv->switch_wq, hgpk_mode_switch);
+ INIT_DELAYED_WORK(&priv->recalib_wq, hgpk_recalib_work);
+
+ if (device_create_file(&psmouse->ps2dev.serio->dev,
+ &dev_attr_powered)) {
+ hgpk_err(psmouse, "Failed to create sysfs attribute\n");
+ goto attr_fail;
+ }
+
+
+ return 0;
+
+attr_fail:
+ input_unregister_device(gs);
+ gs = NULL;
+init_fail:
+ input_free_device(gs);
+ kfree(priv);
+ return -1;
+}
+
+int olpc_detect(struct psmouse *psmouse, int set_properties)
+{
+ int version;
+
+ version = hgpk_get_model(psmouse);
+ if (version < 0)
+ return version;
+
+ if (set_properties) {
+ psmouse->vendor = "ALPS";
+ psmouse->name = "PenTablet";
+ psmouse->model = version;
+ }
+ return 0;
+}
diff -purN linux_2.6.24_org/drivers/input/mouse/olpc.h linux_2.6.24_olpc/drivers/input/mouse/olpc.h
--- linux_2.6.24_org/drivers/input/mouse/olpc.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/input/mouse/olpc.h 2008-02-15 18:59:14.000000000 +0000
@@ -0,0 +1,78 @@
+/*
+ * OLPC touchpad PS/2 mouse driver
+ *
+ * Copyright (c) 2006 One Laptop Per Child, inc.
+ *
+ * This driver is partly based on the ALPS driver.
+ * Copyright (c) 2003 Peter Osterlund <petero2@telia.com>
+ * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef _OLPC_H
+#define _OLPC_H
+
+enum hgpk_model_t {
+ HGPK_MODEL_PreA = 0x0a, /* pre-B1s */
+ HGPK_MODEL_A = 0x14, /* found on B1s, PT disabled in hardware */
+ HGPK_MODEL_B = 0x28, /* B2s, has capacitance issues */
+ HGPK_MODEL_C = 0x3c,
+ HGPK_MODEL_D = 0x50, /* C1, mass production */
+};
+
+#define HGPK_GS 0xff /* The GlideSensor */
+#define HGPK_PT 0xcf /* The PenTablet */
+
+struct hgpk_packet {
+ struct input_dev *dev;
+ int x, y, z;
+ unsigned char mode_switch;
+ unsigned int pt_down:1, gs_down:1;
+ unsigned int left:1, right:1;
+};
+
+struct hgpk_data {
+ struct input_dev *gs; /* GlideSensor */
+ struct psmouse *psmouse;
+ char name[32]; /* Name */
+ char phys[32]; /* Phys */
+ int pending_mode;
+ int current_mode;
+ s64 late;
+ int axis_errors;
+ int repeat_pkts;
+ int powered;
+ unsigned long recalib_window;
+ struct delayed_work switch_wq;
+ struct delayed_work recalib_wq;
+};
+
+#define hgpk_dbg(psmouse, format, arg...) \
+ dev_dbg(&(psmouse)->ps2dev.serio->dev, format, ## arg)
+#define hgpk_err(psmouse, format, arg...) \
+ dev_err(&(psmouse)->ps2dev.serio->dev, format, ## arg)
+#define hgpk_info(psmouse, format, arg...) \
+ dev_info(&(psmouse)->ps2dev.serio->dev, format, ## arg)
+#define hgpk_warn(psmouse, format, arg...) \
+ dev_warn(&(psmouse)->ps2dev.serio->dev, format, ## arg)
+#define hgpk_notice(psmouse, format, arg...) \
+ dev_notice(&(psmouse)->ps2dev.serio->dev, format, ## arg)
+
+#ifdef CONFIG_MOUSE_PS2_OLPC
+int olpc_detect(struct psmouse *psmouse, int set_properties);
+int olpc_init(struct psmouse *psmouse);
+#else
+inline int olpc_detect(struct psmouse *psmouse, int set_properties)
+{
+ return -ENOSYS;
+}
+inline int olpc_init(struct psmouse *psmouse)
+{
+ return -ENOSYS;
+}
+#endif
+
+#endif
diff -purN linux_2.6.24_org/drivers/input/mouse/psmouse-base.c linux_2.6.24_olpc/drivers/input/mouse/psmouse-base.c
--- linux_2.6.24_org/drivers/input/mouse/psmouse-base.c 2008-02-15 20:11:51.000000000 +0000
+++ linux_2.6.24_olpc/drivers/input/mouse/psmouse-base.c 2008-02-15 18:59:14.000000000 +0000
@@ -26,6 +26,7 @@
#include "synaptics.h"
#include "logips2pp.h"
#include "alps.h"
+#include "olpc.h"
#include "lifebook.h"
#include "trackpoint.h"
#include "touchkit_ps2.h"
@@ -103,7 +104,7 @@ static struct attribute_group psmouse_at
*/
static DEFINE_MUTEX(psmouse_mutex);
-static struct workqueue_struct *kpsmoused_wq;
+struct workqueue_struct *kpsmoused_wq;
struct psmouse_protocol {
enum psmouse_type type;
@@ -221,7 +222,7 @@ static inline void __psmouse_set_state(s
* is not a concern.
*/
-static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
+void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
{
serio_pause_rx(psmouse->ps2dev.serio);
__psmouse_set_state(psmouse, new_state);
@@ -320,7 +321,7 @@ static irqreturn_t psmouse_interrupt(str
goto out;
}
- if (psmouse->packet[1] == PSMOUSE_RET_ID) {
+ if (psmouse->packet[1] == PSMOUSE_RET_ID || psmouse->packet[1] == PSMOUSE_RET_BAT) {
__psmouse_set_state(psmouse, PSMOUSE_IGNORE);
serio_reconnect(serio);
goto out;
@@ -631,8 +632,21 @@ static int psmouse_extensions(struct psm
}
}
+/*
+ * Try OLPC touchpad.
+ */
if (max_proto > PSMOUSE_IMEX) {
+ if (olpc_detect(psmouse, set_properties) == 0) {
+ if (!set_properties || olpc_init(psmouse) == 0)
+ return PSMOUSE_OLPC;
+/*
+ * Init failed, try basic relative protocols
+ */
+ max_proto = PSMOUSE_IMEX;
+ }
+ }
+ if (max_proto > PSMOUSE_IMEX) {
if (genius_detect(psmouse, set_properties) == 0)
return PSMOUSE_GENPS;
@@ -763,6 +777,14 @@ static const struct psmouse_protocol psm
.detect = touchkit_ps2_detect,
},
#endif
+#ifdef CONFIG_MOUSE_PS2_OLPC
+ {
+ .type = PSMOUSE_OLPC,
+ .name = "OLPC",
+ .alias = "olpc",
+ .detect = olpc_detect,
+ },
+#endif
{
.type = PSMOUSE_CORTRON,
.name = "CortronPS/2",
diff -purN linux_2.6.24_org/drivers/input/mouse/psmouse.h linux_2.6.24_olpc/drivers/input/mouse/psmouse.h
--- linux_2.6.24_org/drivers/input/mouse/psmouse.h 2008-02-15 20:11:51.000000000 +0000
+++ linux_2.6.24_olpc/drivers/input/mouse/psmouse.h 2008-02-15 18:59:14.000000000 +0000
@@ -88,6 +88,7 @@ enum psmouse_type {
PSMOUSE_LIFEBOOK,
PSMOUSE_TRACKPOINT,
PSMOUSE_TOUCHKIT_PS2,
+ PSMOUSE_OLPC,
PSMOUSE_CORTRON,
PSMOUSE_AUTO /* This one should always be last */
};
@@ -95,7 +96,9 @@ enum psmouse_type {
int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command);
int psmouse_reset(struct psmouse *psmouse);
void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution);
+void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state);
+extern struct workqueue_struct *kpsmoused_wq;
struct psmouse_attribute {
struct device_attribute dattr;
diff -purN linux_2.6.24_org/drivers/input/serio/i8042.c linux_2.6.24_olpc/drivers/input/serio/i8042.c
--- linux_2.6.24_org/drivers/input/serio/i8042.c 2008-02-15 20:11:51.000000000 +0000
+++ linux_2.6.24_olpc/drivers/input/serio/i8042.c 2008-02-15 18:59:14.000000000 +0000
@@ -874,6 +874,11 @@ static long i8042_panic_blink(long count
#undef DELAY
#ifdef CONFIG_PM
+
+#ifdef CONFIG_OLPC
+#include <asm/olpc.h>
+#endif
+
/*
* Here we try to restore the original BIOS settings. We only want to
* do that once, when we really suspend, not when we taking memory
@@ -884,8 +889,15 @@ static long i8042_panic_blink(long count
static int i8042_suspend(struct platform_device *dev, pm_message_t state)
{
if (dev->dev.power.power_state.event != state.event) {
+#ifdef CONFIG_OLPC
+ /* Anything newer than B2 remains powered; no reset needed */
+ if (!olpc_board_at_least(olpc_board_pre(0xb3))) {
+#endif
if (state.event == PM_EVENT_SUSPEND)
i8042_controller_reset();
+#ifdef CONFIG_OLPC
+ }
+#endif
dev->dev.power.power_state = state;
}
@@ -908,9 +920,15 @@ static int i8042_resume(struct platform_
if (dev->dev.power.power_state.event == PM_EVENT_ON)
return 0;
+#ifdef CONFIG_OLPC
+ if (!olpc_board_at_least(olpc_board_pre(0xb3))) {
+#endif
error = i8042_controller_check();
if (error)
return error;
+#ifdef CONFIG_OLPC
+ }
+#endif
error = i8042_controller_selftest();
if (error)
diff -purN linux_2.6.24_org/drivers/input/serio/serio.c linux_2.6.24_olpc/drivers/input/serio/serio.c
--- linux_2.6.24_org/drivers/input/serio/serio.c 2008-02-15 20:11:51.000000000 +0000
+++ linux_2.6.24_olpc/drivers/input/serio/serio.c 2008-02-15 18:59:14.000000000 +0000
@@ -910,11 +910,22 @@ static int serio_uevent(struct device *d
#endif /* CONFIG_HOTPLUG */
#ifdef CONFIG_PM
+
+#ifdef CONFIG_OLPC
+#include <asm/olpc.h>
+#endif
+
static int serio_suspend(struct device *dev, pm_message_t state)
{
if (dev->power.power_state.event != state.event) {
+#ifdef CONFIG_OLPC
+ if (!olpc_board_at_least(olpc_board_pre(0xb3))) {
+#endif
if (state.event == PM_EVENT_SUSPEND)
serio_cleanup(to_serio_port(dev));
+#ifdef CONFIG_OLPC
+ }
+#endif
dev->power.power_state = state;
}
diff -purN linux_2.6.24_org/drivers/Kconfig linux_2.6.24_olpc/drivers/Kconfig
--- linux_2.6.24_org/drivers/Kconfig 2008-02-15 20:11:21.000000000 +0000
+++ linux_2.6.24_olpc/drivers/Kconfig 2008-02-15 18:58:34.000000000 +0000
@@ -94,6 +94,8 @@ source "drivers/auxdisplay/Kconfig"
source "drivers/kvm/Kconfig"
+source "drivers/sysprof/Kconfig"
+
source "drivers/uio/Kconfig"
source "drivers/virtio/Kconfig"
diff -purN linux_2.6.24_org/drivers/Makefile linux_2.6.24_olpc/drivers/Makefile
--- linux_2.6.24_org/drivers/Makefile 2008-02-15 20:11:24.000000000 +0000
+++ linux_2.6.24_olpc/drivers/Makefile 2008-02-15 18:58:43.000000000 +0000
@@ -23,6 +23,8 @@ obj-y += char/
obj-$(CONFIG_CONNECTOR) += connector/
+obj-$(CONFIG_SYSPROF) += sysprof/
+
# i810fb and intelfb depend on char/agp/
obj-$(CONFIG_FB_I810) += video/i810/
obj-$(CONFIG_FB_INTEL) += video/intelfb/
diff -purN linux_2.6.24_org/drivers/media/video/cafe_ccic.c linux_2.6.24_olpc/drivers/media/video/cafe_ccic.c
--- linux_2.6.24_org/drivers/media/video/cafe_ccic.c 2008-02-15 20:11:25.000000000 +0000
+++ linux_2.6.24_olpc/drivers/media/video/cafe_ccic.c 2008-02-15 18:58:44.000000000 +0000
@@ -372,6 +372,10 @@ static int cafe_smbus_write_data(struct
rval = value | ((command << TWSIC1_ADDR_SHIFT) & TWSIC1_ADDR);
cafe_reg_write(cam, REG_TWSIC1, rval);
spin_unlock_irqrestore(&cam->dev_lock, flags);
+ mdelay(2); /* It'll probably take about 900µs anyway, and the
+ CAFÉ is apparently quite sensitive to being poked
+ at this point. If we can work out precisely what's
+ going on and reduce this delay, it would be nice. */
/*
* Time to wait for the write to complete. THIS IS A RACY
@@ -907,8 +911,6 @@ static int cafe_cam_configure(struct caf
struct v4l2_format fmt;
int ret, zero = 0;
- if (cam->state != S_IDLE)
- return -EINVAL;
fmt.fmt.pix = cam->pix_format;
ret = __cafe_cam_cmd(cam, VIDIOC_INT_INIT, &zero);
if (ret == 0)
@@ -2237,14 +2239,18 @@ static int cafe_pci_suspend(struct pci_d
int ret;
enum cafe_state cstate;
+ mutex_lock(&cam->s_mutex);
ret = pci_save_state(pdev);
- if (ret)
+ if (ret) {
+ cam_warn(cam, "Unable to save PCI state\n");
return ret;
+ }
cstate = cam->state; /* HACK - stop_dma sets to idle */
cafe_ctlr_stop_dma(cam);
cafe_ctlr_power_down(cam);
pci_disable_device(pdev);
cam->state = cstate;
+ /* hold mutex until restore */
return 0;
}
@@ -2263,16 +2269,18 @@ static int cafe_pci_resume(struct pci_de
cam_warn(cam, "Unable to re-enable device on resume!\n");
return ret;
}
+ /* we're still holding mutex from suspend */
cafe_ctlr_init(cam);
cafe_ctlr_power_down(cam);
- mutex_lock(&cam->s_mutex);
- if (cam->users > 0) {
- cafe_ctlr_power_up(cam);
- __cafe_cam_reset(cam);
- }
- mutex_unlock(&cam->s_mutex);
-
+ if (cam->users > 0) {
+ cafe_ctlr_power_up(cam);
+ __cafe_cam_reset(cam);
+ }
+ else
+ cafe_ctlr_power_down(cam);
+ mutex_unlock(&cam->s_mutex);
+
set_bit(CF_CONFIG_NEEDED, &cam->flags);
if (cam->state == S_SPECREAD)
cam->state = S_IDLE; /* Don't bother restarting */
diff -purN linux_2.6.24_org/drivers/misc/Kconfig linux_2.6.24_olpc/drivers/misc/Kconfig
--- linux_2.6.24_org/drivers/misc/Kconfig 2008-02-15 20:11:42.000000000 +0000
+++ linux_2.6.24_olpc/drivers/misc/Kconfig 2008-02-15 18:58:52.000000000 +0000
@@ -219,6 +219,11 @@ config THINKPAD_ACPI_BAY
If you are not sure, say Y here.
+config EEPROM_93CX6
+ tristate "EEPROM 93CX6 support"
+ ---help---
+ This is a driver for the EEPROM chipsets 93c46 and 93c66.
+ The driver supports both read as well as write commands.
config ATMEL_SSC
tristate "Device driver for Atmel SSC peripheral"
diff -purN linux_2.6.24_org/drivers/mmc/card/block.c linux_2.6.24_olpc/drivers/mmc/card/block.c
--- linux_2.6.24_org/drivers/mmc/card/block.c 2008-02-15 20:11:13.000000000 +0000
+++ linux_2.6.24_olpc/drivers/mmc/card/block.c 2008-02-15 18:58:17.000000000 +0000
@@ -237,6 +237,13 @@ static int mmc_blk_issue_rq(struct mmc_q
if (brq.data.blocks > card->host->max_blk_count)
brq.data.blocks = card->host->max_blk_count;
+ if (mmc_card_sd(card) && !card->host->ios.clock) {
+ printk(KERN_ERR "%s: I/O to stopped card\n",
+ req->rq_disk->disk_name);
+ goto cmd_err;
+ }
+ mmc_set_data_timeout(&brq.data, card);
+
/*
* If the host doesn't support multiple block writes, force
* block writes to single block. SD cards are excepted from
diff -purN linux_2.6.24_org/drivers/mmc/host/sdhci.c linux_2.6.24_olpc/drivers/mmc/host/sdhci.c
--- linux_2.6.24_org/drivers/mmc/host/sdhci.c 2008-02-15 20:11:13.000000000 +0000
+++ linux_2.6.24_olpc/drivers/mmc/host/sdhci.c 2008-02-15 18:58:17.000000000 +0000
@@ -441,6 +441,12 @@ static void sdhci_prepare_data(struct sd
break;
}
+ /*
+ * There's an off-by-one error in the hw that we need to
+ * compensate for.
+ */
+ count++;
+
if (count >= 0xF) {
printk(KERN_WARNING "%s: Too large timeout requested!\n",
mmc_hostname(host->mmc));
@@ -728,19 +734,17 @@ static void sdhci_set_power(struct sdhci
if (!(host->chip->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))
writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
- pwr = SDHCI_POWER_ON;
-
switch (1 << power) {
case MMC_VDD_165_195:
- pwr |= SDHCI_POWER_180;
+ pwr = SDHCI_POWER_180;
break;
case MMC_VDD_29_30:
case MMC_VDD_30_31:
- pwr |= SDHCI_POWER_300;
+ pwr = SDHCI_POWER_300;
break;
case MMC_VDD_32_33:
case MMC_VDD_33_34:
- pwr |= SDHCI_POWER_330;
+ pwr = SDHCI_POWER_330;
break;
default:
BUG();
@@ -748,6 +752,10 @@ static void sdhci_set_power(struct sdhci
writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL);
+ pwr |= SDHCI_POWER_ON;
+
+ writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL);
+
out:
host->power = power;
}
diff -purN linux_2.6.24_org/drivers/mtd/nand/cafe_nand.c linux_2.6.24_olpc/drivers/mtd/nand/cafe_nand.c
--- linux_2.6.24_org/drivers/mtd/nand/cafe_nand.c 2008-02-15 20:11:46.000000000 +0000
+++ linux_2.6.24_olpc/drivers/mtd/nand/cafe_nand.c 2008-02-15 18:58:57.000000000 +0000
@@ -11,6 +11,7 @@
#undef DEBUG
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
#include <linux/rslib.h>
#include <linux/pci.h>
#include <linux/delay.h>
@@ -52,6 +53,7 @@
struct cafe_priv {
struct nand_chip nand;
+ struct mtd_partition *parts;
struct pci_dev *pdev;
void __iomem *mmio;
struct rs_control *rs;
@@ -84,6 +86,10 @@ static unsigned int numtimings;
static int timing[3];
module_param_array(timing, int, &numtimings, 0644);
+#ifdef CONFIG_MTD_PARTITIONS
+static const char *part_probes[] = { "RedBoot", NULL };
+#endif
+
/* Hrm. Why isn't this already conditional on something in the struct device? */
#define cafe_dev_dbg(dev, args...) do { if (debug) dev_dbg(dev, ##args); } while(0)
@@ -620,7 +626,9 @@ static int __devinit cafe_nand_probe(str
{
struct mtd_info *mtd;
struct cafe_priv *cafe;
+ struct mtd_partition *parts;
uint32_t ctrl;
+ int nr_parts;
int err = 0;
/* Very old versions shared the same PCI ident for all three
@@ -787,7 +795,18 @@ static int __devinit cafe_nand_probe(str
goto out_irq;
pci_set_drvdata(pdev, mtd);
+
+ /* We register the whole device first, separate from the partitions */
add_mtd_device(mtd);
+
+#ifdef CONFIG_MTD_PARTITIONS
+ nr_parts = parse_mtd_partitions(mtd, part_probes, &parts, 0);
+ if (nr_parts > 0) {
+ cafe->parts = parts;
+ dev_info(&cafe->pdev->dev, "%d RedBoot partitions found\n", nr_parts);
+ add_mtd_partitions(mtd, parts, nr_parts);
+ }
+#endif
goto out;
out_irq:
diff -purN linux_2.6.24_org/drivers/mtd/redboot.c linux_2.6.24_olpc/drivers/mtd/redboot.c
--- linux_2.6.24_org/drivers/mtd/redboot.c 2008-02-15 20:11:46.000000000 +0000
+++ linux_2.6.24_olpc/drivers/mtd/redboot.c 2008-02-15 18:58:58.000000000 +0000
@@ -59,16 +59,31 @@ static int parse_redboot_partitions(stru
static char nullstring[] = "unallocated";
#endif
+ if ( directory < 0 ) {
+ offset = master->size + directory * master->erasesize;
+ while (master->block_isbad &&
+ master->block_isbad(master, offset)) {
+ if (!offset) {
+ nogood:
+ printk(KERN_NOTICE "Failed to find a non-bad block to check for RedBoot partition table\n");
+ return -EIO;
+ }
+ offset -= master->erasesize;
+ }
+ } else {
+ offset = directory * master->erasesize;
+ while (master->block_isbad &&
+ master->block_isbad(master, offset)) {
+ offset += master->erasesize;
+ if (offset == master->size)
+ goto nogood;
+ }
+ }
buf = vmalloc(master->erasesize);
if (!buf)
return -ENOMEM;
- if ( directory < 0 )
- offset = master->size + directory*master->erasesize;
- else
- offset = directory*master->erasesize;
-
printk(KERN_NOTICE "Searching for RedBoot partition table in %s at offset 0x%lx\n",
master->name, offset);
diff -purN linux_2.6.24_org/drivers/net/forcedeth.c linux_2.6.24_olpc/drivers/net/forcedeth.c
--- linux_2.6.24_org/drivers/net/forcedeth.c 2008-02-15 20:11:19.000000000 +0000
+++ linux_2.6.24_olpc/drivers/net/forcedeth.c 2008-02-15 18:58:33.000000000 +0000
@@ -3559,11 +3559,13 @@ static int nv_request_irq(struct net_dev
}
if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
+ pci_intx(np->pci_dev, 0);
np->msi_flags |= NV_MSI_ENABLED;
dev->irq = np->pci_dev->irq;
if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
pci_disable_msi(np->pci_dev);
+ pci_intx(np->pci_dev, 1);
np->msi_flags &= ~NV_MSI_ENABLED;
dev->irq = np->pci_dev->irq;
goto out_err;
@@ -3606,6 +3608,7 @@ static void nv_free_irq(struct net_devic
free_irq(np->pci_dev->irq, dev);
if (np->msi_flags & NV_MSI_ENABLED) {
pci_disable_msi(np->pci_dev);
+ pci_intx(np->pci_dev, 1);
np->msi_flags &= ~NV_MSI_ENABLED;
}
}
diff -purN linux_2.6.24_org/drivers/pci/quirks.c linux_2.6.24_olpc/drivers/pci/quirks.c
--- linux_2.6.24_org/drivers/pci/quirks.c 2008-02-15 20:11:33.000000000 +0000
+++ linux_2.6.24_olpc/drivers/pci/quirks.c 2008-02-15 18:58:50.000000000 +0000
@@ -1359,6 +1359,17 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_IN
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
/*
+ * According to Tom Sylla, the Geode does not support PCI power management
+ * transition, so we shouldn't need the D3hot delay.
+ */
+static void __init quirk_geode_pci_pm(struct pci_dev *dev)
+{
+ pci_pm_d3_delay = 0;
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, quirk_geode_pci_pm);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_geode_pci_pm);
+
+/*
* Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
* but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
* Re-allocate the region if needed...
diff -purN linux_2.6.24_org/drivers/power/ds2760_battery.c linux_2.6.24_olpc/drivers/power/ds2760_battery.c
--- linux_2.6.24_org/drivers/power/ds2760_battery.c 2008-02-15 20:11:45.000000000 +0000
+++ linux_2.6.24_olpc/drivers/power/ds2760_battery.c 2008-02-15 18:58:56.000000000 +0000
@@ -409,6 +409,7 @@ static int ds2760_battery_suspend(struct
struct ds2760_device_info *di = platform_get_drvdata(pdev);
di->charge_status = POWER_SUPPLY_STATUS_UNKNOWN;
+ power_supply_changed(&di->bat);
return 0;
}
diff -purN linux_2.6.24_org/drivers/power/olpc_battery.c linux_2.6.24_olpc/drivers/power/olpc_battery.c
--- linux_2.6.24_org/drivers/power/olpc_battery.c 2008-02-15 20:11:45.000000000 +0000
+++ linux_2.6.24_olpc/drivers/power/olpc_battery.c 2008-02-15 18:58:56.000000000 +0000
@@ -14,12 +14,13 @@
#include <linux/power_supply.h>
#include <linux/jiffies.h>
#include <linux/sched.h>
+#include <asm/io.h>
#include <asm/olpc.h>
#define EC_BAT_VOLTAGE 0x10 /* uint16_t, *9.76/32, mV */
#define EC_BAT_CURRENT 0x11 /* int16_t, *15.625/120, mA */
-#define EC_BAT_ACR 0x12
+#define EC_BAT_ACR 0x12 /* int16_t *416.667 µAh */
#define EC_BAT_TEMP 0x13 /* uint16_t, *100/256, °C */
#define EC_AMB_TEMP 0x14 /* uint16_t, *100/256, °C */
#define EC_BAT_STATUS 0x15 /* uint8_t, bitmask */
@@ -84,6 +85,8 @@ static struct power_supply olpc_ac = {
.get_property = olpc_ac_get_prop,
};
+static char bat_serial[17]; /* Ick */
+
/*********************************************************************
* Battery properties
*********************************************************************/
@@ -94,6 +97,7 @@ static int olpc_bat_get_property(struct
int ret = 0;
int16_t ec_word;
uint8_t ec_byte;
+ uint64_t ser_buf;
ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &ec_byte, 1);
if (ret)
@@ -127,8 +131,8 @@ static int olpc_bat_get_property(struct
val->intval = POWER_SUPPLY_STATUS_FULL;
else /* Not _necessarily_ true but EC doesn't tell all yet */
val->intval = POWER_SUPPLY_STATUS_CHARGING;
- break;
}
+ break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = !!(ec_byte & BAT_STAT_PRESENT);
break;
@@ -249,6 +253,22 @@ static int olpc_bat_get_property(struct
ec_word = be16_to_cpu(ec_word);
val->intval = ec_word * 100 / 256;
break;
+ case POWER_SUPPLY_PROP_ACCUM_CURRENT:
+ ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2);
+ if (ret)
+ return ret;
+
+ ec_word = be16_to_cpu(ec_word);
+ val->intval = (uint16_t)ec_word;
+ break;
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8);
+ if (ret)
+ return ret;
+
+ sprintf(bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf));
+ val->strval = bat_serial;
+ break;
default:
ret = -EINVAL;
break;
@@ -268,7 +288,51 @@ static enum power_supply_property olpc_b
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_TEMP_AMBIENT,
+ POWER_SUPPLY_PROP_ACCUM_CURRENT,
POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+};
+
+/* EEPROM reading goes completely around the power_supply API, sadly */
+
+#define EEPROM_START 0x20
+#define EEPROM_END 0x80
+#define EEPROM_SIZE (EEPROM_END - EEPROM_START)
+
+static ssize_t olpc_bat_eeprom_read(struct kobject *kobj, char *buf, loff_t off,
+ size_t count)
+{
+ uint8_t ec_byte;
+ int ret, end;
+
+ if (off >= EEPROM_SIZE)
+ return 0;
+ if (off + count > EEPROM_SIZE)
+ count = EEPROM_SIZE - off;
+
+ end = EEPROM_START + off + count;
+ for (ec_byte = EEPROM_START + off; ec_byte < end; ec_byte++) {
+ ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1,
+ &buf[ec_byte - EEPROM_START], 1);
+ if (ret) {
+ printk(KERN_ERR "olpc-battery: EC command "
+ "EC_BAT_EEPROM @ 0x%x failed -"
+ " %d!\n", ec_byte, ret);
+ return -EIO;
+ }
+ }
+
+ return count;
+}
+
+static struct bin_attribute olpc_bat_eeprom = {
+ .attr = {
+ .name = "eeprom",
+ .mode = S_IRUGO,
+ .owner = THIS_MODULE,
+ },
+ .size = 0,
+ .read = olpc_bat_eeprom_read,
};
/*********************************************************************
@@ -299,7 +363,7 @@ static int __init olpc_bat_init(void)
if (!olpc_platform_info.ecver)
return -ENXIO;
- if (olpc_platform_info.ecver < 0x43) {
+ if (olpc_platform_info.ecver < 0x44) {
printk(KERN_NOTICE "OLPC EC version 0x%02x too old for battery driver.\n", olpc_platform_info.ecver);
return -ENXIO;
}
@@ -324,9 +388,15 @@ static int __init olpc_bat_init(void)
if (ret)
goto battery_failed;
+ ret = device_create_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
+ if (ret)
+ goto eeprom_failed;
+
olpc_register_battery_callback(&olpc_battery_trigger_uevent);
goto success;
+eeprom_failed:
+ power_supply_unregister(&olpc_bat);
battery_failed:
power_supply_unregister(&olpc_ac);
ac_failed:
@@ -338,6 +408,7 @@ success:
static void __exit olpc_bat_exit(void)
{
olpc_deregister_battery_callback();
+ device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
power_supply_unregister(&olpc_bat);
power_supply_unregister(&olpc_ac);
platform_device_unregister(bat_pdev);
diff -purN linux_2.6.24_org/drivers/power/power_supply_sysfs.c linux_2.6.24_olpc/drivers/power/power_supply_sysfs.c
--- linux_2.6.24_org/drivers/power/power_supply_sysfs.c 2008-02-15 20:11:45.000000000 +0000
+++ linux_2.6.24_olpc/drivers/power/power_supply_sysfs.c 2008-02-15 18:58:56.000000000 +0000
@@ -114,9 +114,11 @@ static struct device_attribute power_sup
POWER_SUPPLY_ATTR(time_to_empty_avg),
POWER_SUPPLY_ATTR(time_to_full_now),
POWER_SUPPLY_ATTR(time_to_full_avg),
+ POWER_SUPPLY_ATTR(accum_current),
/* Properties of type `const char *' */
POWER_SUPPLY_ATTR(model_name),
POWER_SUPPLY_ATTR(manufacturer),
+ POWER_SUPPLY_ATTR(serial_number),
};
static ssize_t power_supply_show_static_attrs(struct device *dev,
diff -purN linux_2.6.24_org/drivers/serial/serial_core.c linux_2.6.24_olpc/drivers/serial/serial_core.c
--- linux_2.6.24_org/drivers/serial/serial_core.c 2008-02-15 20:11:33.000000000 +0000
+++ linux_2.6.24_olpc/drivers/serial/serial_core.c 2008-02-15 18:58:51.000000000 +0000
@@ -2013,6 +2013,7 @@ int uart_suspend_port(struct uart_driver
int uart_resume_port(struct uart_driver *drv, struct uart_port *port)
{
struct uart_state *state = drv->state + port->line;
+ struct ktermios termios;
mutex_lock(&state->mutex);
@@ -2035,20 +2036,6 @@ int uart_resume_port(struct uart_driver
* Re-enable the console device after suspending.
*/
if (uart_console(port)) {
- struct ktermios termios;
-
- /*
- * First try to use the console cflag setting.
- */
- memset(&termios, 0, sizeof(struct ktermios));
- termios.c_cflag = port->cons->cflag;
-
- /*
- * If that's unset, use the tty termios setting.
- */
- if (state->info && state->info->tty && termios.c_cflag == 0)
- termios = *state->info->tty->termios;
-
port->ops->set_termios(port, &termios, NULL);
console_start(port->cons);
}
diff -purN linux_2.6.24_org/drivers/sysprof/config.h linux_2.6.24_olpc/drivers/sysprof/config.h
--- linux_2.6.24_org/drivers/sysprof/config.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/sysprof/config.h 2008-02-15 18:58:59.000000000 +0000
@@ -0,0 +1,23 @@
+/* config.h. Generated by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Look for global separate debug info in this path */
+#define DEBUGDIR "/usr/local/lib/debug"
+
+/* Define to 1 if you have the `iberty' library (-liberty). */
+/* #undef HAVE_LIBIBERTY */
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "sysprof"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "sysprof 1.0.8"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "sysprof"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "1.0.8"
diff -purN linux_2.6.24_org/drivers/sysprof/Kconfig linux_2.6.24_olpc/drivers/sysprof/Kconfig
--- linux_2.6.24_org/drivers/sysprof/Kconfig 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/sysprof/Kconfig 2008-02-15 18:58:59.000000000 +0000
@@ -0,0 +1,12 @@
+
+menu "Sysprof"
+
+config SYSPROF
+ tristate "Sysprof support"
+ help
+ Say M here to include the sysprof-module.
+
+ Sysprof is a sampling profiler that uses a kernel module,
+ sysprof-module, to generate stacktraces which are then interpreted by
+ the userspace program "sysprof".
+endmenu
diff -purN linux_2.6.24_org/drivers/sysprof/Makefile linux_2.6.24_olpc/drivers/sysprof/Makefile
--- linux_2.6.24_org/drivers/sysprof/Makefile 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/sysprof/Makefile 2008-02-15 18:58:59.000000000 +0000
@@ -0,0 +1 @@
+obj-$(CONFIG_SYSPROF) += sysprof-module.o
diff -purN linux_2.6.24_org/drivers/sysprof/sysprof-module.c linux_2.6.24_olpc/drivers/sysprof/sysprof-module.c
--- linux_2.6.24_org/drivers/sysprof/sysprof-module.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/sysprof/sysprof-module.c 2008-02-15 18:58:59.000000000 +0000
@@ -0,0 +1,271 @@
+/* -*- c-basic-offset: 8 -*- */
+
+/* Sysprof -- Sampling, systemwide CPU profiler
+ * Copyright 2004, Red Hat, Inc.
+ * Copyright 2004, 2005, Soeren Sandmann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef CONFIG_SMP
+# define __SMP__
+#endif
+#include <asm/atomic.h>
+#include <linux/kernel.h> /* Needed for KERN_ALERT */
+#include <linux/module.h> /* Needed by all modules */
+#include <linux/sched.h>
+
+#include <linux/proc_fs.h>
+#include <asm/uaccess.h>
+#include <linux/poll.h>
+#include <linux/highmem.h>
+#include <linux/pagemap.h>
+#include <linux/profile.h>
+
+#include "sysprof-module.h"
+
+#include "config.h"
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
+#include <linux/config.h>
+#endif
+
+#if !CONFIG_PROFILING
+# error Sysprof needs a kernel with profiling support compiled in.
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
+# error Sysprof needs a Linux 2.6.11 kernel or later
+#endif
+#include <linux/kallsyms.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Soeren Sandmann (sandmann@daimi.au.dk)");
+
+#define SAMPLES_PER_SECOND (200)
+#define INTERVAL ((HZ <= SAMPLES_PER_SECOND)? 1 : (HZ / SAMPLES_PER_SECOND))
+#define N_TRACES 256
+
+static SysprofStackTrace stack_traces[N_TRACES];
+static SysprofStackTrace * head = &stack_traces[0];
+static SysprofStackTrace * tail = &stack_traces[0];
+DECLARE_WAIT_QUEUE_HEAD (wait_for_trace);
+DECLARE_WAIT_QUEUE_HEAD (wait_for_exit);
+
+/* Macro the names of the registers that are used on each architecture */
+#if defined(CONFIG_X86_64)
+# define REG_FRAME_PTR rbp
+# define REG_INS_PTR rip
+# define REG_STACK_PTR rsp
+#elif defined(CONFIG_X86)
+# define REG_FRAME_PTR ebp
+# define REG_INS_PTR eip
+# define REG_STACK_PTR esp
+#else
+# error Sysprof only supports the i386 and x86-64 architectures
+#endif
+
+typedef struct userspace_reader userspace_reader;
+struct userspace_reader
+{
+ struct task_struct *task;
+ unsigned long cache_address;
+ unsigned long *cache;
+};
+
+typedef struct StackFrame StackFrame;
+struct StackFrame {
+ unsigned long next;
+ unsigned long return_address;
+};
+
+struct work_struct work;
+
+static int
+read_frame (void *frame_pointer, StackFrame *frame)
+{
+#if 0
+ /* This is commented out because we seem to be called with
+ * (current_thread_info()->addr_limit.seg)) == 0
+ * which means access_ok() _always_ fails.
+ *
+ * Not sure why (or if) this isn't the case for oprofile
+ */
+ if (!access_ok(VERIFY_READ, frame_pointer, sizeof(StackFrame)))
+ return 1;
+#endif
+
+ if (__copy_from_user_inatomic (
+ frame, frame_pointer, sizeof (StackFrame)))
+ return 1;
+
+ return 0;
+}
+
+DEFINE_PER_CPU(int, n_samples);
+
+static int
+timer_notify (struct pt_regs *regs)
+{
+ SysprofStackTrace *trace = head;
+ int i;
+ int is_user;
+ static atomic_t in_timer_notify = ATOMIC_INIT(1);
+ int n;
+
+ n = ++get_cpu_var(n_samples);
+ put_cpu_var(n_samples);
+
+ if (n % INTERVAL != 0)
+ return 0;
+
+ /* 0: locked, 1: unlocked */
+
+ if (!atomic_dec_and_test(&in_timer_notify))
+ goto out;
+
+ is_user = user_mode(regs);
+
+ if (!current || current->pid == 0)
+ goto out;
+
+ if (is_user && current->state != TASK_RUNNING)
+ goto out;
+
+ if (!is_user)
+ {
+ /* kernel */
+
+ trace->pid = current->pid;
+ trace->truncated = 0;
+ trace->n_addresses = 1;
+
+ /* 0x1 is taken by sysprof to mean "in kernel" */
+ trace->addresses[0] = (void *)0x1;
+ }
+ else
+ {
+ StackFrame *frame_pointer;
+ StackFrame frame;
+ memset(trace, 0, sizeof (SysprofStackTrace));
+
+ trace->pid = current->pid;
+ trace->truncated = 0;
+
+ i = 0;
+
+ trace->addresses[i++] = (void *)regs->REG_INS_PTR;
+
+ frame_pointer = (void *)regs->REG_FRAME_PTR;
+
+ while (read_frame (frame_pointer, &frame) == 0 &&
+ i < SYSPROF_MAX_ADDRESSES &&
+ (unsigned long)frame_pointer >= regs->REG_STACK_PTR)
+ {
+ trace->addresses[i++] = (void *)frame.return_address;
+ frame_pointer = (StackFrame *)frame.next;
+ }
+
+ trace->n_addresses = i;
+
+ if (i == SYSPROF_MAX_ADDRESSES)
+ trace->truncated = 1;
+ else
+ trace->truncated = 0;
+ }
+
+ if (head++ == &stack_traces[N_TRACES - 1])
+ head = &stack_traces[0];
+
+ wake_up (&wait_for_trace);
+
+out:
+ atomic_inc(&in_timer_notify);
+ return 0;
+}
+
+static int
+procfile_read(char *buffer,
+ char **buffer_location,
+ off_t offset,
+ int buffer_len,
+ int *eof,
+ void *data)
+{
+ if (head == tail)
+ return -EWOULDBLOCK;
+
+ *buffer_location = (char *)tail;
+
+ BUG_ON(tail->pid == 0);
+
+ if (tail++ == &stack_traces[N_TRACES - 1])
+ tail = &stack_traces[0];
+
+ return sizeof (SysprofStackTrace);
+}
+
+struct proc_dir_entry *trace_proc_file;
+static unsigned int
+procfile_poll(struct file *filp, poll_table *poll_table)
+{
+ if (head != tail)
+ return POLLIN | POLLRDNORM;
+
+ poll_wait(filp, &wait_for_trace, poll_table);
+
+ if (head != tail)
+ return POLLIN | POLLRDNORM;
+
+ return 0;
+}
+
+int
+init_module(void)
+{
+ static struct file_operations fops;
+
+ trace_proc_file =
+ create_proc_entry ("sysprof-trace", S_IFREG | S_IRUGO, &proc_root);
+
+ if (!trace_proc_file)
+ return 1;
+
+ fops = *trace_proc_file->proc_fops;
+ fops.poll = procfile_poll;
+
+ trace_proc_file->read_proc = procfile_read;
+ trace_proc_file->proc_fops = &fops;
+ trace_proc_file->size = sizeof (SysprofStackTrace);
+
+ register_timer_hook (timer_notify);
+
+ printk(KERN_ALERT "sysprof: loaded (%s)\n", PACKAGE_VERSION);
+
+ return 0;
+}
+
+void
+cleanup_module(void)
+{
+ unregister_timer_hook (timer_notify);
+
+ remove_proc_entry("sysprof-trace", &proc_root);
+
+ printk(KERN_ALERT "sysprof: unloaded\n");
+}
+
diff -purN linux_2.6.24_org/drivers/sysprof/sysprof-module.h linux_2.6.24_olpc/drivers/sysprof/sysprof-module.h
--- linux_2.6.24_org/drivers/sysprof/sysprof-module.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/sysprof/sysprof-module.h 2008-02-15 18:58:59.000000000 +0000
@@ -0,0 +1,37 @@
+/* Sysprof -- Sampling, systemwide CPU profiler
+ * Copyright 2004, Red Hat, Inc.
+ * Copyright 2004, 2005, Soeren Sandmann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef SYSPROF_MODULE_H
+#define SYSPROF_MODULE_H
+
+typedef struct SysprofStackTrace SysprofStackTrace;
+
+#define SYSPROF_MAX_ADDRESSES 512
+
+struct SysprofStackTrace
+{
+ int pid; /* -1 if in kernel */
+ int truncated;
+ int n_addresses; /* note: this can be 1 if the process was compiled
+ * with -fomit-frame-pointer or is otherwise weird
+ */
+ void *addresses[SYSPROF_MAX_ADDRESSES];
+};
+
+#endif
diff -purN linux_2.6.24_org/drivers/usb/core/driver.c linux_2.6.24_olpc/drivers/usb/core/driver.c
--- linux_2.6.24_org/drivers/usb/core/driver.c 2008-02-15 20:11:09.000000000 +0000
+++ linux_2.6.24_olpc/drivers/usb/core/driver.c 2008-02-15 18:58:14.000000000 +0000
@@ -1062,8 +1062,15 @@ static int usb_suspend_both(struct usb_d
break;
}
}
- if (status == 0)
+ if (status == 0) {
+
+ /* Non-root devices don't need to do anything for FREEZE
+ * or PRETHAW. */
+ if (udev->parent && (msg.event == PM_EVENT_FREEZE ||
+ msg.event == PM_EVENT_PRETHAW))
+ goto done;
status = usb_suspend_device(udev, msg);
+ }
/* If the suspend failed, resume interfaces that did get suspended */
if (status != 0) {
diff -purN linux_2.6.24_org/drivers/usb/core/quirks.c linux_2.6.24_olpc/drivers/usb/core/quirks.c
--- linux_2.6.24_org/drivers/usb/core/quirks.c 2008-02-15 20:11:09.000000000 +0000
+++ linux_2.6.24_olpc/drivers/usb/core/quirks.c 2008-02-15 18:58:12.000000000 +0000
@@ -45,6 +45,9 @@ static const struct usb_device_id usb_qu
/* SKYMEDI USB_DRIVE */
{ USB_DEVICE(0x1516, 0x8628), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* Philips PSC805 audio device */
+ { USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },
+
{ } /* terminating entry must be last */
};
diff -purN linux_2.6.24_org/drivers/usb/core/usb.h linux_2.6.24_olpc/drivers/usb/core/usb.h
--- linux_2.6.24_org/drivers/usb/core/usb.h 2008-02-15 20:11:09.000000000 +0000
+++ linux_2.6.24_olpc/drivers/usb/core/usb.h 2008-02-15 18:58:14.000000000 +0000
@@ -41,6 +41,7 @@ extern void usb_host_cleanup(void);
extern void usb_autosuspend_work(struct work_struct *work);
extern int usb_port_suspend(struct usb_device *dev);
extern int usb_port_resume(struct usb_device *dev);
+extern int usb_reset_suspended_device(struct usb_device *udev);
extern int usb_external_suspend_device(struct usb_device *udev,
pm_message_t msg);
extern int usb_external_resume_device(struct usb_device *udev);
diff -purN linux_2.6.24_org/drivers/usb/host/ehci-hcd.c linux_2.6.24_olpc/drivers/usb/host/ehci-hcd.c
--- linux_2.6.24_org/drivers/usb/host/ehci-hcd.c 2008-02-15 20:11:09.000000000 +0000
+++ linux_2.6.24_olpc/drivers/usb/host/ehci-hcd.c 2008-02-15 18:58:12.000000000 +0000
@@ -653,9 +653,16 @@ static irqreturn_t ehci_irq (struct usb_
/* complete the unlinking of some qh [4.15.2.3] */
if (status & STS_IAA) {
- COUNT (ehci->stats.reclaim);
- ehci->reclaim_ready = 1;
- bh = 1;
+ if (!ehci->reclaim) {
+ printk(KERN_WARNING "%s would set reclaim_ready with nothing to reclaim!\n", __func__);
+printk(KERN_DEBUG "%s: USBCMD: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->command));
+printk(KERN_DEBUG "%s: USBSTS: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->status));
+ WARN_ON(1);
+ } else {
+ COUNT (ehci->stats.reclaim);
+ ehci->reclaim_ready = 1;
+ bh = 1;
+ }
}
/* remote wakeup [4.3.1] */
diff -purN linux_2.6.24_org/drivers/usb/host/ehci-hub.c linux_2.6.24_olpc/drivers/usb/host/ehci-hub.c
--- linux_2.6.24_org/drivers/usb/host/ehci-hub.c 2008-02-15 20:11:09.000000000 +0000
+++ linux_2.6.24_olpc/drivers/usb/host/ehci-hub.c 2008-02-15 18:58:12.000000000 +0000
@@ -132,10 +132,15 @@ static int ehci_bus_suspend (struct usb_
ehci_quiesce (ehci);
hcd->state = HC_STATE_QUIESCING;
}
+printk(KERN_DEBUG "%s: USBCMD: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->command));
+printk(KERN_DEBUG "%s: USBSTS: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->status));
+
ehci->command = ehci_readl(ehci, &ehci->regs->command);
if (ehci->reclaim)
ehci->reclaim_ready = 1;
ehci_work(ehci);
+printk(KERN_DEBUG "%s: USBCMD: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->command));
+printk(KERN_DEBUG "%s: USBSTS: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->status));
/* Unlike other USB host controller types, EHCI doesn't have
* any notion of "global" or bus-wide suspend. The driver has
@@ -175,6 +180,9 @@ static int ehci_bus_suspend (struct usb_
ehci_halt (ehci);
hcd->state = HC_STATE_SUSPENDED;
+printk(KERN_DEBUG "%s: USBCMD: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->command));
+printk(KERN_DEBUG "%s: USBSTS: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->status));
+
/* allow remote wakeup */
mask = INTR_MASK;
if (!device_may_wakeup(&hcd->self.root_hub->dev))
@@ -195,6 +203,18 @@ static int ehci_bus_resume (struct usb_h
u32 temp;
u32 power_okay;
int i;
+#ifdef CONFIG_OLPC
+ u32 lo;
+ static void __iomem *usb_ehc_addr;
+
+ rdmsrl(0x51200009, lo);
+ usb_ehc_addr = ioremap(lo, 256);
+ writel(readl(usb_ehc_addr+0x54) | 0x1000, usb_ehc_addr+0x54);
+ writel(readl(usb_ehc_addr+0x58) | 0x1000, usb_ehc_addr+0x58);
+ writel(readl(usb_ehc_addr+0x5C) | 0x1000, usb_ehc_addr+0x5C);
+ writel(readl(usb_ehc_addr+0x60) | 0x1000, usb_ehc_addr+0x60);
+ iounmap(usb_ehc_addr);
+#endif
if (time_before (jiffies, ehci->next_statechange))
msleep(5);
diff -purN linux_2.6.24_org/drivers/usb/host/ehci-pci.c linux_2.6.24_olpc/drivers/usb/host/ehci-pci.c
--- linux_2.6.24_org/drivers/usb/host/ehci-pci.c 2008-02-15 20:11:09.000000000 +0000
+++ linux_2.6.24_olpc/drivers/usb/host/ehci-pci.c 2008-02-15 18:58:12.000000000 +0000
@@ -247,6 +247,9 @@ static int ehci_pci_suspend(struct usb_h
rc = -EINVAL;
goto bail;
}
+printk(KERN_DEBUG "%s: USBCMD: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->command));
+printk(KERN_DEBUG "%s: USBSTS: 0x%x\n", __func__, ehci_readl(ehci, &ehci->regs->status));
+
ehci_writel(ehci, 0, &ehci->regs->intr_enable);
(void)ehci_readl(ehci, &ehci->regs->intr_enable);
diff -purN linux_2.6.24_org/drivers/usb/host/ehci-q.c linux_2.6.24_olpc/drivers/usb/host/ehci-q.c
--- linux_2.6.24_org/drivers/usb/host/ehci-q.c 2008-02-15 20:11:09.000000000 +0000
+++ linux_2.6.24_olpc/drivers/usb/host/ehci-q.c 2008-02-15 18:58:12.000000000 +0000
@@ -177,7 +177,7 @@ static int qtd_copy_status (
if (QTD_CERR (token))
status = -EPIPE;
else {
- ehci_dbg (ehci, "devpath %s ep%d%s 3strikes\n",
+ printk(KERN_ERR "devpath %s ep%d%s 3strikes\n",
urb->dev->devpath,
usb_pipeendpoint (urb->pipe),
usb_pipein (urb->pipe) ? "in" : "out");
@@ -973,6 +973,11 @@ static void end_unlink_async (struct ehc
struct ehci_qh *qh = ehci->reclaim;
struct ehci_qh *next;
+ if (!qh) {
+ printk(KERN_CRIT "%s with ehci->reclaim == NULL!\n", __func__);
+ WARN_ON(1);
+ return;
+ }
timer_action_done (ehci, TIMER_IAA_WATCHDOG);
// qh->hw_next = cpu_to_hc32(qh->qh_dma);
diff -purN linux_2.6.24_org/drivers/usb/host/ohci-pci.c linux_2.6.24_olpc/drivers/usb/host/ohci-pci.c
--- linux_2.6.24_org/drivers/usb/host/ohci-pci.c 2008-02-15 20:11:09.000000000 +0000
+++ linux_2.6.24_olpc/drivers/usb/host/ohci-pci.c 2008-02-15 18:58:12.000000000 +0000
@@ -317,6 +317,8 @@ static int ohci_pci_resume (struct usb_h
/* FIXME: we should try to detect loss of VBUS power here */
prepare_for_handover(hcd);
+ /* Force the PM core to resume the root hub */
+ hcd_to_bus(hcd)->root_hub->dev.power.prev_state.event = PM_EVENT_ON;
return 0;
}
diff -purN linux_2.6.24_org/drivers/usb/storage/usb.c linux_2.6.24_olpc/drivers/usb/storage/usb.c
--- linux_2.6.24_org/drivers/usb/storage/usb.c 2008-02-15 20:11:09.000000000 +0000
+++ linux_2.6.24_olpc/drivers/usb/storage/usb.c 2008-02-15 18:58:11.000000000 +0000
@@ -244,7 +244,7 @@ static int storage_pre_reset(struct usb_
return 0;
}
-static int storage_post_reset(struct usb_interface *iface)
+static void storage_post_reset(struct usb_interface *iface, int reset_resume)
{
struct us_data *us = usb_get_intfdata(iface);
@@ -256,8 +256,10 @@ static int storage_post_reset(struct usb
/* FIXME: Notify the subdrivers that they need to reinitialize
* the device */
- mutex_unlock(&us->dev_mutex);
- return 0;
+ /* If this is a reset-resume then the pre_reset routine wasn't
+ * called, so we don't need to unlock the mutex. */
+ if (!reset_resume)
+ mutex_unlock(&us->dev_mutex);
}
/*
diff -purN linux_2.6.24_org/drivers/video/fbmem.c linux_2.6.24_olpc/drivers/video/fbmem.c
--- linux_2.6.24_org/drivers/video/fbmem.c 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/fbmem.c 2008-02-15 18:58:42.000000000 +0000
@@ -820,6 +820,53 @@ static void try_to_load(int fb)
#endif /* CONFIG_KMOD */
int
+fb_powerup(struct fb_info *info)
+{
+ int ret = 0;
+
+ if (!info || info->state == FBINFO_STATE_RUNNING)
+ return 0;
+
+ if (info->fbops->fb_powerup)
+ ret = info->fbops->fb_powerup(info);
+
+ if (!ret) {
+ acquire_console_sem();
+ fb_set_suspend(info, 0);
+ release_console_sem();
+ }
+
+ return ret;
+}
+
+int
+fb_powerdown(struct fb_info *info)
+{
+ int ret = 0;
+
+ if (!info || info->state == FBINFO_STATE_SUSPENDED)
+ return 0;
+
+ /* Tell everybody that the fbdev is going down */
+ acquire_console_sem();
+ fb_set_suspend(info, 1);
+ release_console_sem();
+
+ if (info->fbops->fb_powerdown)
+ ret = info->fbops->fb_powerdown(info);
+
+ /* If the power down failed, then un-notify */
+
+ if (ret) {
+ acquire_console_sem();
+ fb_set_suspend(info, 0);
+ release_console_sem();
+ }
+
+ return ret;
+}
+
+int
fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var)
{
struct fb_fix_screeninfo *fix = &info->fix;
diff -purN linux_2.6.24_org/drivers/video/geode/display_gx.c linux_2.6.24_olpc/drivers/video/geode/display_gx.c
--- linux_2.6.24_org/drivers/video/geode/display_gx.c 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/display_gx.c 2008-02-15 18:58:41.000000000 +0000
@@ -11,26 +11,44 @@
* Free Software Foundation; either version 2 of the License, or * (at your
* option) any later version.
*/
+
+#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/fb.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/div64.h>
#include <asm/delay.h>
+#include <asm/olpc.h>
#include "geodefb.h"
#include "display_gx.h"
-#ifdef CONFIG_FB_GEODE_GX_SET_FBSIZE
-unsigned int gx_frame_buffer_size(void)
+static inline void rmwl(u32 val, u32 *reg)
{
- return CONFIG_FB_GEODE_GX_FBSIZE;
+ u32 in = readl(reg);
+ if (in != val)
+ writel(val, reg);
}
-#else
+
unsigned int gx_frame_buffer_size(void)
{
unsigned int val;
+#ifdef CONFIG_OLPC
+ if (machine_is_olpc() && !olpc_has_vsa()) {
+ u32 hi,lo;
+ rdmsr(GLIU0_P2D_RO0, lo, hi);
+
+ /* Top page number */
+ val = ((hi & 0xff) << 12) | ((lo & 0xfff00000) >> 20);
+
+ val -= (lo & 0x000fffff); /* Subtract bottom page number */
+ val += 1; /* Adjust page count */
+ return (val << 12);
+ }
+#endif
+
/* FB size is reported by a virtual register */
/* Virtual register class = 0x02 */
/* VG_MEM_SIZE(512Kb units) = 0x00 */
@@ -41,7 +59,6 @@ unsigned int gx_frame_buffer_size(void)
val = (unsigned int)(inw(0xAC1E)) & 0xFFl;
return (val << 19);
}
-#endif
int gx_line_delta(int xres, int bpp)
{
@@ -63,23 +80,23 @@ static void gx_set_mode(struct fb_info *
gcfg = readl(par->dc_regs + DC_GENERAL_CFG);
dcfg = readl(par->dc_regs + DC_DISPLAY_CFG);
- /* Disable the timing generator. */
- dcfg &= ~(DC_DCFG_TGEN);
- writel(dcfg, par->dc_regs + DC_DISPLAY_CFG);
-
- /* Wait for pending memory requests before disabling the FIFO load. */
- udelay(100);
-
- /* Disable FIFO load and compression. */
- gcfg &= ~(DC_GCFG_DFLE | DC_GCFG_CMPE | DC_GCFG_DECE);
- writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
-
- /* Setup DCLK and its divisor. */
- par->vid_ops->set_dclk(info);
-
- /*
- * Setup new mode.
- */
+ /* Programming the clock is costly and ugly, so avoid if if we can */
+
+ if (par->curdclk != info->var.pixclock) {
+ /* Disable the timing generator. */
+ dcfg &= ~(DC_DCFG_TGEN);
+ writel(dcfg, par->dc_regs + DC_DISPLAY_CFG);
+
+ /* Wait for pending memory requests before disabling the FIFO load. */
+ udelay(100);
+
+ /* Disable FIFO load and compression. */
+ gcfg &= ~(DC_GCFG_DFLE | DC_GCFG_CMPE | DC_GCFG_DECE);
+ writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+
+ /* Setup DCLK and its divisor. */
+ par->vid_ops->set_dclk(info);
+ }
/* Clear all unused feature bits. */
gcfg &= DC_GCFG_YUVM | DC_GCFG_VDSE;
@@ -90,12 +107,13 @@ static void gx_set_mode(struct fb_info *
gcfg |= (6 << DC_GCFG_DFHPEL_POS) | (5 << DC_GCFG_DFHPSL_POS) | DC_GCFG_DFLE;
/* Framebuffer start offset. */
- writel(0, par->dc_regs + DC_FB_ST_OFFSET);
+ rmwl(0, par->dc_regs + DC_FB_ST_OFFSET);
/* Line delta and line buffer length. */
- writel(info->fix.line_length >> 3, par->dc_regs + DC_GFX_PITCH);
- writel(((info->var.xres * info->var.bits_per_pixel/8) >> 3) + 2,
- par->dc_regs + DC_LINE_SIZE);
+ rmwl(info->fix.line_length >> 3, par->dc_regs + DC_GFX_PITCH);
+
+ rmwl(((info->var.xres * info->var.bits_per_pixel/8) >> 3) + 2,
+ par->dc_regs + DC_LINE_SIZE);
/* Enable graphics and video data and unmask address lines. */
@@ -134,17 +152,16 @@ static void gx_set_mode(struct fb_info *
vblankend = vsyncend + info->var.upper_margin;
vtotal = vblankend;
- writel((hactive - 1) | ((htotal - 1) << 16), par->dc_regs + DC_H_ACTIVE_TIMING);
- writel((hblankstart - 1) | ((hblankend - 1) << 16), par->dc_regs + DC_H_BLANK_TIMING);
- writel((hsyncstart - 1) | ((hsyncend - 1) << 16), par->dc_regs + DC_H_SYNC_TIMING);
-
- writel((vactive - 1) | ((vtotal - 1) << 16), par->dc_regs + DC_V_ACTIVE_TIMING);
- writel((vblankstart - 1) | ((vblankend - 1) << 16), par->dc_regs + DC_V_BLANK_TIMING);
- writel((vsyncstart - 1) | ((vsyncend - 1) << 16), par->dc_regs + DC_V_SYNC_TIMING);
+ rmwl((hactive - 1) | ((htotal - 1) << 16), par->dc_regs + DC_H_ACTIVE_TIMING);
+ rmwl((hblankstart - 1) | ((hblankend - 1) << 16), par->dc_regs + DC_H_BLANK_TIMING);
+ rmwl((hsyncstart - 1) | ((hsyncend - 1) << 16), par->dc_regs + DC_H_SYNC_TIMING);
+ rmwl((vactive - 1) | ((vtotal - 1) << 16), par->dc_regs + DC_V_ACTIVE_TIMING);
+ rmwl((vblankstart - 1) | ((vblankend - 1) << 16), par->dc_regs + DC_V_BLANK_TIMING);
+ rmwl((vsyncstart - 1) | ((vsyncend - 1) << 16), par->dc_regs + DC_V_SYNC_TIMING);
/* Write final register values. */
- writel(dcfg, par->dc_regs + DC_DISPLAY_CFG);
- writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+ rmwl(dcfg, par->dc_regs + DC_DISPLAY_CFG);
+ rmwl(gcfg, par->dc_regs + DC_GENERAL_CFG);
par->vid_ops->configure_display(info);
diff -purN linux_2.6.24_org/drivers/video/geode/display_gx.h linux_2.6.24_olpc/drivers/video/geode/display_gx.h
--- linux_2.6.24_org/drivers/video/geode/display_gx.h 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/display_gx.h 2008-02-15 18:58:41.000000000 +0000
@@ -20,6 +20,9 @@ extern struct geode_dc_ops gx_dc_ops;
#define GLD_MSR_CONFIG 0xC0002001
#define GLD_MSR_CONFIG_DM_FP 0x40
+/* Used for memory dection on the OLPC */
+#define GLIU0_P2D_RO0 0x10000029
+
/* Display controller registers */
#define DC_UNLOCK 0x00
diff -purN linux_2.6.24_org/drivers/video/geode/geodefb.h linux_2.6.24_olpc/drivers/video/geode/geodefb.h
--- linux_2.6.24_org/drivers/video/geode/geodefb.h 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/geodefb.h 2008-02-15 18:58:41.000000000 +0000
@@ -12,6 +12,10 @@
#ifndef __GEODEFB_H__
#define __GEODEFB_H__
+#define FB_POWER_STATE_OFF 0
+#define FB_POWER_STATE_SUSPEND 1
+#define FB_POWER_STATE_ON 2
+
struct geodefb_info;
struct geode_dc_ops {
@@ -21,18 +25,24 @@ struct geode_dc_ops {
struct geode_vid_ops {
void (*set_dclk)(struct fb_info *);
+ unsigned int (*get_dclk)(struct fb_info *);
void (*configure_display)(struct fb_info *);
int (*blank_display)(struct fb_info *, int blank_mode);
};
struct geodefb_par {
int enable_crt;
+ int fbactive; /* True if the current console is in KD_GRAPHICS mode */
int panel_x; /* dimensions of an attached flat panel, non-zero => enable panel */
int panel_y;
+ unsigned int curdclk; /* Used by GX to avoid unnessesary clock switching */
void __iomem *dc_regs;
void __iomem *vid_regs;
+ void __iomem *gp_regs;
struct geode_dc_ops *dc_ops;
struct geode_vid_ops *vid_ops;
+
+ int state;
};
#endif /* !__GEODEFB_H__ */
diff -purN linux_2.6.24_org/drivers/video/geode/geode_regs.h linux_2.6.24_olpc/drivers/video/geode/geode_regs.h
--- linux_2.6.24_org/drivers/video/geode/geode_regs.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/video/geode/geode_regs.h 2008-02-15 18:58:41.000000000 +0000
@@ -0,0 +1,255 @@
+/* This header file defines the registers and suspend/resume
+ structures for the Geode GX and LX. The lxfb driver defines
+ _GEODELX_ before including this file, which will unlock the
+ extra registers that are only valid for LX.
+*/
+
+#ifndef _GEODE_REGS_H_
+#define _GEODE_REGS_H_
+
+/* MSRs */
+
+#define GX_VP_MSR_PAD_SELECT 0xC0002011
+#define LX_VP_MSR_PAD_SELECT 0x48000011
+
+#define GEODE_MSR_GLCP_DOTPLL 0x4c000015
+
+#define GLCP_DOTPLL_RESET (1 << 0)
+#define GLCP_DOTPLL_BYPASS (1 << 15)
+#define GLCP_DOTPLL_HALFPIX (1 << 24)
+#define GLCP_DOTPLL_LOCK (1 << 25)
+
+/* Registers */
+#define VP_FP_START 0x400
+
+
+#ifdef _GEODELX_
+
+#define GP_REG_SIZE 0x7C
+#define DC_REG_SIZE 0xF0
+#define VP_REG_SIZE 0x158
+#define FP_REG_SIZE 0x70
+
+#else
+
+#define GP_REG_SIZE 0x50
+#define DC_REG_SIZE 0x90
+#define VP_REG_SIZE 0x138
+#define FP_REG_SIZE 0x70
+
+#endif
+
+#define DC_PAL_SIZE 0x105
+#define VP_COEFF_COUNT 512
+#define DC_HFILT_SIZE 256
+#define DC_VFILT_SIZE 256
+
+struct geoderegs {
+
+ struct {
+ u64 padsel;
+ u64 dotpll;
+
+#ifdef _GEODELX_
+ u64 dfglcfg;
+ u64 dcspare;
+#else
+ u64 rstpll;
+#endif
+ } msr;
+
+ union {
+ unsigned char b[GP_REG_SIZE];
+ struct {
+ u32 dst_offset; /* 0x00 */
+ u32 src_offset; /* 0x04 */
+ u32 stride; /* 0x08 */
+ u32 wid_height; /* 0x0C */
+ u32 src_color_fg; /* 0x10 */
+ u32 src_color_bg; /* 0x14 */
+ u32 pat_color_0; /* 0x18 */
+ u32 pat_color_1; /* 0x1C */
+ u32 pat_color_2; /* 0x20 */
+ u32 pat_color_3; /* 0x24 */
+ u32 pat_color_4; /* 0x28 */
+ u32 pat_color_5; /* 0x2C */
+ u32 pat_data_0; /* 0x30 */
+ u32 pat_data_1; /* 0x34 */
+ u32 raster_mode; /* 0x38 */
+ u32 vector_mode; /* 0x3C */
+ u32 blt_mode; /* 0x40 */
+ u32 blit_status; /* 0x4C */
+ u32 hst_src; /* 0x48 */
+ u32 base_offset; /* 0x4C */
+
+#ifdef _GEODELX_
+ u32 cmd_top; /* 0x50 */
+ u32 cmd_bot; /* 0x54 */
+ u32 cmd_read; /* 0x58 */
+ u32 cmd_write; /* 0x5C */
+ u32 ch3_offset; /* 0x60 */
+ u32 ch3_mode_str; /* 0x64 */
+ u32 ch3_width; /* 0x68 */
+ u32 ch3_hsrc; /* 0x6C */
+ u32 lut_index; /* 0x70 */
+ u32 lut_data; /* 0x74 */
+ u32 int_cntrl; /* 0x78 */
+#endif
+ } r;
+ } gp;
+
+ union {
+ unsigned char b[DC_REG_SIZE];
+
+ struct {
+ u32 unlock; /* 0x00 */
+ u32 gcfg; /* 0x04 */
+ u32 dcfg; /* 0x08 */
+ u32 arb; /* 0x0C */
+ u32 fb_st_offset; /* 0x10 */
+ u32 cb_st_offset; /* 0x14 */
+ u32 curs_st_offset; /* 0x18 */
+ u32 icon_st_offset; /* 0x1C */
+ u32 vid_y_st_offset; /* 0x20 */
+ u32 vid_u_st_offset; /* 0x24 */
+ u32 vid_v_st_offset; /* 0x28 */
+ u32 dctop; /* 0x2c */
+ u32 line_size; /* 0x30 */
+ u32 gfx_pitch; /* 0x34 */
+ u32 vid_yuv_pitch; /* 0x38 */
+ u32 rsvd2; /* 0x3C */
+ u32 h_active_timing; /* 0x40 */
+ u32 h_blank_timing; /* 0x44 */
+ u32 h_sync_timing; /* 0x48 */
+ u32 rsvd3; /* 0x4C */
+ u32 v_active_timing; /* 0x50 */
+ u32 v_blank_timing; /* 0x54 */
+ u32 v_sync_timing; /* 0x58 */
+ u32 fbactive; /* 0x5C */
+ u32 dc_cursor_x; /* 0x60 */
+ u32 dc_cursor_y; /* 0x64 */
+ u32 dc_icon_x; /* 0x68 */
+ u32 dc_line_cnt; /* 0x6C */
+ u32 rsvd5; /* 0x70 - palette address */
+ u32 rsvd6; /* 0x74 - palette data */
+ u32 dfifo_diag; /* 0x78 */
+ u32 cfifo_diag; /* 0x7C */
+ u32 dc_vid_ds_delta; /* 0x80 */
+ u32 gliu0_mem_offset; /* 0x84 */
+ u32 dv_ctl; /* 0x88 - added by LX */
+ u32 dv_acc; /* 0x8C */
+
+#ifdef _GEODELX_
+ u32 gfx_scale;
+ u32 irq_filt_ctl;
+ u32 filt_coeff1;
+ u32 filt_coeff2;
+ u32 vbi_event_ctl;
+ u32 vbi_odd_ctl;
+ u32 vbi_hor;
+ u32 vbi_ln_odd;
+ u32 vbi_ln_event;
+ u32 vbi_pitch;
+ u32 clr_key;
+ u32 clr_key_mask;
+ u32 clr_key_x;
+ u32 clr_key_y;
+ u32 irq;
+ u32 rsvd8;
+ u32 genlk_ctrl;
+ u32 vid_even_y_st_offset; /* 0xD8 */
+ u32 vid_even_u_st_offset; /* 0xDC */
+ u32 vid_even_v_st_offset; /* 0xE0 */
+ u32 v_active_even_timing; /* 0xE4 */
+ u32 v_blank_even_timing; /* 0xE8 */
+ u32 v_sync_even_timing; /* 0xEC */
+#endif
+ } r;
+ } dc;
+
+ union {
+ unsigned char b[VP_REG_SIZE];
+
+ struct {
+ u64 vcfg; /* 0x00 */
+ u64 dcfg; /* 0x08 */
+ u64 vx; /* 0x10 */
+ u64 vy; /* 0x18 */
+ u64 vs; /* 0x20 */
+ u64 vck; /* 0x28 */
+ u64 vcm; /* 0x30 */
+ u64 rsvd1; /* 0x38 - Gamma address*/
+ u64 rsvd2; /* 0x40 - Gamma data*/
+ u64 slr; /* 0x48 - LX only*/
+ u64 misc; /* 0x50 */
+ u64 ccs; /* 0x58 */
+ u64 vys; /* 0x60 */
+ u64 vxs; /* 0x68 */
+ u64 rsvd4; /* 0x70 */
+ u64 vdc; /* 0x78 */
+ u64 vco; /* 0x80 */
+ u64 crc; /* 0x88 */
+ u64 crc32; /* 0x90 */
+ u64 vde; /* 0x98 */
+ u64 cck; /* 0xA0 */
+ u64 ccm; /* 0xA8 */
+ u64 cc1; /* 0xB0 */
+ u64 cc2; /* 0xB8 */
+ u64 a1x; /* 0xC0 */
+ u64 a1y; /* 0xC8 */
+ u64 a1c; /* 0xD0 */
+ u64 a1t; /* 0xD8 */
+ u64 a2x; /* 0xE0 */
+ u64 a2y; /* 0xE8 */
+ u64 a2c; /* 0xF0 */
+ u64 a2t; /* 0xF8 */
+ u64 a3x; /* 0x100 */
+ u64 a3y; /* 0x108 */
+ u64 a3c; /* 0x110 */
+ u64 a3t; /* 0x118 */
+ u64 vrr; /* 0x120 */
+ u64 awt; /* 0x128 */
+ u64 vtm; /* 0x130 */
+#ifdef _GEODELX_
+ u64 vye; /* 0x138 */
+ u64 a1ye; /* 0x140 */
+ u32 a2ye; /* 0x148 */
+ u32 a3ye; /* 0x150 */
+#endif
+ } r;
+ } vp;
+
+ union {
+ unsigned char b[FP_REG_SIZE];
+
+ struct {
+ u64 pt1; /* 0x400 */
+ u64 pt2; /* 0x408 */
+ u64 pm; /* 0x410 */
+ u64 dfc; /* 0x418 */
+ u64 blfsr; /* 0x420 */
+ u64 rlfsr; /* 0x428 */
+ u64 fmi; /* 0x430 */
+ u64 fmd; /* 0x438 */
+ u64 rsvd; /* 0x440 */
+ u64 dca; /* 0x448 */
+ u64 dmd; /* 0x450 */
+ u64 crc; /* 0x458 */
+ u64 fbb; /* 0x460 */
+ u64 crc32; /* 0x468 */
+ } r;
+ } fp;
+
+ u32 pal[DC_PAL_SIZE];
+ u32 gamma[256];
+
+#ifdef _GEODELX_
+
+ u32 hcoeff[DC_HFILT_SIZE * 2];
+ u32 vcoeff[DC_VFILT_SIZE];
+
+ u32 vp_coeff[VP_COEFF_COUNT];
+#endif
+};
+
+#endif
diff -purN linux_2.6.24_org/drivers/video/geode/gxfb_core.c linux_2.6.24_olpc/drivers/video/geode/gxfb_core.c
--- linux_2.6.24_org/drivers/video/geode/gxfb_core.c 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/gxfb_core.c 2008-02-15 18:58:41.000000000 +0000
@@ -30,12 +30,31 @@
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
+#include <linux/notifier.h>
+#include <linux/vt_kern.h>
+#include <linux/console.h>
+#include <asm/uaccess.h>
+#include <asm/olpc.h>
#include "geodefb.h"
#include "display_gx.h"
#include "video_gx.h"
+#define FBIOSGAMMA _IOW('F', 0x20, void *)
+#define FBIOGGAMMA _IOW('F', 0x21, void *)
+
+#ifdef DEBUG
+
+#define FBIODUMPGP _IOW('F', 0x22, void *)
+#define FBIODUMPDC _IOW('F', 0x23, void *)
+#define FBIODUMPVP _IOW('F', 0x24, void *)
+#define FBIODUMPFP _IOW('F', 0x25, void *)
+
+#endif
+
static char *mode_option;
+static int noclear;
+struct fb_info *gxfb_info;
/* Modes relevant to the GX (taken from modedb.c) */
static const struct fb_videomode gx_modedb[] __initdata = {
@@ -103,8 +122,20 @@ static const struct fb_videomode gx_mode
{ NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1200x900-75 - CRT timings for the OLPC mode */
+ { NULL, 75, 1200, 900, 8049, 104, 240, 29, 54, 136, 3,
+ 0, FB_VMODE_NONINTERLACED, 0 }
};
+#ifdef CONFIG_OLPC
+static const struct fb_videomode gx_dcon_modedb[] __initdata = {
+ /* The only mode the DCON has is 1200x900 */
+ { NULL, 50, 1200, 900, 17460, 24, 8, 4, 5, 8, 3,
+ 0, FB_VMODE_NONINTERLACED, 0 }
+};
+#endif
+
+
static int gxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
if (var->xres > 1600 || var->yres > 1200)
@@ -137,7 +168,7 @@ static int gxfb_check_var(struct fb_var_
return 0;
}
-static int gxfb_set_par(struct fb_info *info)
+int gxfb_set_par(struct fb_info *info)
{
struct geodefb_par *par = info->par;
@@ -204,16 +235,26 @@ static int gxfb_blank(int blank_mode, st
return par->vid_ops->blank_display(info, blank_mode);
}
+static int fbsize;
+
static int __init gxfb_map_video_memory(struct fb_info *info, struct pci_dev *dev)
{
struct geodefb_par *par = info->par;
- int fb_len;
int ret;
ret = pci_enable_device(dev);
if (ret < 0)
return ret;
+ ret = pci_request_region(dev, 1, "gxfb (graphics processor)");
+ if (ret < 0)
+ return ret;
+
+ par->gp_regs = ioremap(pci_resource_start(dev, 1),
+ pci_resource_len(dev, 1));
+ if (!par->gp_regs)
+ return -ENOMEM;
+
ret = pci_request_region(dev, 3, "gxfb (video processor)");
if (ret < 0)
return ret;
@@ -232,36 +273,118 @@ static int __init gxfb_map_video_memory(
ret = pci_request_region(dev, 0, "gxfb (framebuffer)");
if (ret < 0)
return ret;
- if ((fb_len = gx_frame_buffer_size()) < 0)
- return -ENOMEM;
+
+ /* If the fbsize wasn't specified then try to probe it */
+
+ if (!fbsize) {
+ fbsize = gx_frame_buffer_size();
+ if (fbsize == 0)
+ return -ENOMEM;
+ }
+
info->fix.smem_start = pci_resource_start(dev, 0);
- info->fix.smem_len = fb_len;
+ info->fix.smem_len = fbsize;
info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
if (!info->screen_base)
return -ENOMEM;
- /* Set the 16MB aligned base address of the graphics memory region
+ /* Set the 16MiB aligned base address of the graphics memory region
* in the display controller */
writel(info->fix.smem_start & 0xFF000000,
par->dc_regs + DC_GLIU0_MEM_OFFSET);
- dev_info(&dev->dev, "%d Kibyte of video memory at 0x%lx\n",
+ dev_info(&dev->dev, "%d KiB of video memory at 0x%lx\n",
info->fix.smem_len / 1024, info->fix.smem_start);
return 0;
}
+static int gxfb_ioctl( struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
+{
+ unsigned int gamma[GXFB_GAMMA_DWORDS];
+ int ret = -EINVAL;
+ struct geodefb_par *par = info->par;
+ int i;
+
+ switch(cmd) {
+ case FBIOSGAMMA:
+ /* Read the gamma information from the user - 256 dwords */
+
+ if (copy_from_user(gamma, (void * __user) arg, GXFB_GAMMA_SIZE))
+ return -EFAULT;
+
+ writel(0, par->vid_regs + GX_GAR);
+
+ /* Sequential writes to the data register will increment the
+ address automatically */
+
+ for(i = 0; i < GXFB_GAMMA_DWORDS; i++)
+ writel(gamma[i] & 0xFFFFFF, par->vid_regs + GX_GDR);
+
+ writel(readl(par->vid_regs + GX_MISC) & ~GX_MISC_GAM_EN,
+ par->vid_regs + GX_MISC);
+
+ ret = 0;
+ break;
+
+ case FBIOGGAMMA:
+ if (readl(par->vid_regs + GX_MISC) & GX_MISC_GAM_EN)
+ return -EINVAL;
+
+ memset(gamma, 0, GXFB_GAMMA_SIZE);
+ writel(0, par->vid_regs + GX_GAR);
+
+ for(i = 0; i < GXFB_GAMMA_DWORDS;i++)
+ gamma[i] = readl(par->vid_regs + GX_GDR);
+
+ if (copy_to_user((void * __user) arg, gamma, GXFB_GAMMA_SIZE))
+ ret = -EFAULT;
+ else
+ ret = 0;
+
+ break;
+
+#ifdef DEBUG
+ case FBIODUMPGP:
+ ret = 0;
+ dump_regs(info, 0);
+ break;
+
+ case FBIODUMPDC:
+ ret = 0;
+ dump_regs(info, 1);
+ break;
+
+ case FBIODUMPVP:
+ ret = 0;
+ dump_regs(info, 2);
+ break;
+
+ case FBIODUMPFP:
+ ret = 0;
+ dump_regs(info, 3);
+ break;
+#endif
+ }
+
+ return ret;
+}
+
static struct fb_ops gxfb_ops = {
.owner = THIS_MODULE,
.fb_check_var = gxfb_check_var,
.fb_set_par = gxfb_set_par,
.fb_setcolreg = gxfb_setcolreg,
.fb_blank = gxfb_blank,
+ .fb_ioctl = gxfb_ioctl,
/* No HW acceleration for now. */
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
+ .fb_powerdown = gxfb_powerdown,
+ .fb_powerup = gxfb_powerup,
};
static struct fb_info * __init gxfb_init_fbinfo(struct device *dev)
@@ -303,23 +426,86 @@ static struct fb_info * __init gxfb_init
return info;
}
-static int __init gxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+static int gxfb_console_notify(struct notifier_block *self,
+ unsigned long action, void *data)
+{
+ if (gxfb_info != NULL) {
+ struct geodefb_par *par = gxfb_info->par;
+ par->fbactive = (action == CONSOLE_EVENT_SWITCH_TEXT) ? 0 : 1;
+ }
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block gxfb_console_notifier = {
+ .notifier_call = gxfb_console_notify
+};
+
+#ifdef CONFIG_PM
+
+static int gxfb_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct fb_info *info = pci_get_drvdata(pdev);
+ struct geodefb_par *par = info->par;
+
+ if (pdev->dev.power.power_state.event == state.event)
+ return 0;
+
+ if (state.event == PM_EVENT_SUSPEND) {
+
+ acquire_console_sem();
+ gxfb_powerdown(info);
+
+ par->state = FB_POWER_STATE_OFF;
+ fb_set_suspend(info, 1);
+
+ release_console_sem();
+ }
+
+ pdev->dev.power.power_state = state;
+ return 0;
+}
+
+static int gxfb_resume(struct pci_dev *pdev)
+{
+ struct fb_info *info = pci_get_drvdata(pdev);
+
+ acquire_console_sem();
+
+ /* Turn the engine completely on */
+
+ if (gxfb_powerup(info))
+ printk(KERN_ERR "gxfb: Powerup failed\n");
+
+ fb_set_suspend(info, 0);
+ release_console_sem();
+
+ pdev->dev.power.power_state = PMSG_ON;
+ return 0;
+}
+#endif
+
+static int __init gxfb_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
{
struct geodefb_par *par;
- struct fb_info *info;
int ret;
unsigned long val;
- info = gxfb_init_fbinfo(&pdev->dev);
- if (!info)
+ struct fb_videomode *modedb_ptr;
+ int modedb_size;
+
+ gxfb_info = gxfb_init_fbinfo(&pdev->dev);
+ if (gxfb_info == NULL)
return -ENOMEM;
- par = info->par;
+
+ par = gxfb_info->par;
/* GX display controller and GX video device. */
par->dc_ops = &gx_dc_ops;
par->vid_ops = &gx_vid_ops;
- if ((ret = gxfb_map_video_memory(info, pdev)) < 0) {
+ if ((ret = gxfb_map_video_memory(gxfb_info, pdev)) < 0) {
dev_err(&pdev->dev, "failed to map frame buffer or controller registers\n");
goto err;
}
@@ -333,32 +519,60 @@ static int __init gxfb_probe(struct pci_
else
par->enable_crt = 1;
- ret = fb_find_mode(&info->var, info, mode_option,
- gx_modedb, ARRAY_SIZE(gx_modedb), NULL, 16);
+ /* Get the current dotclock */
+
+ par->curdclk = (par->vid_ops->get_dclk) ? par->vid_ops->get_dclk(gxfb_info) : 0;
+
+ /* We need to determine a display mode right now, so we will
+ * check to see if the DCON was previously detected by the BIOS
+ * and use that to make our mode database decision.
+ */
+
+ modedb_ptr = (struct fb_videomode *) gx_modedb;
+ modedb_size = ARRAY_SIZE(gx_modedb);
+
+#ifdef CONFIG_OLPC
+ if (olpc_has_dcon()) {
+ modedb_ptr = (struct fb_videomode *) gx_dcon_modedb;
+ modedb_size = ARRAY_SIZE(gx_dcon_modedb);
+ }
+#endif
+
+ ret = fb_find_mode(&gxfb_info->var, gxfb_info, mode_option,
+ modedb_ptr, modedb_size, NULL, 16);
+
if (ret == 0 || ret == 4) {
dev_err(&pdev->dev, "could not find valid video mode\n");
ret = -EINVAL;
goto err;
}
+ /* Clear the screen of garbage, unless noclear was specified,
+ * in which case we assume the user knows what he is doing */
+
+ if (!noclear)
+ memset_io(gxfb_info->screen_base, 0, gxfb_info->fix.smem_len);
+
+ gxfb_check_var(&gxfb_info->var, gxfb_info);
+ gxfb_set_par(gxfb_info);
+
+ /* We are powered up */
+ par->state = FB_POWER_STATE_ON;
- /* Clear the frame buffer of garbage. */
- memset_io(info->screen_base, 0, info->fix.smem_len);
- gxfb_check_var(&info->var, info);
- gxfb_set_par(info);
+ console_event_register(&gxfb_console_notifier);
- if (register_framebuffer(info) < 0) {
+ if (register_framebuffer(gxfb_info) < 0) {
ret = -EINVAL;
goto err;
}
- pci_set_drvdata(pdev, info);
- printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, info->fix.id);
+ pci_set_drvdata(pdev, gxfb_info);
+ printk(KERN_INFO "fb%d: %s frame buffer device\n", gxfb_info->node, gxfb_info->fix.id);
return 0;
err:
- if (info->screen_base) {
- iounmap(info->screen_base);
+ if (gxfb_info->screen_base) {
+ iounmap(gxfb_info->screen_base);
pci_release_region(pdev, 0);
}
if (par->vid_regs) {
@@ -370,8 +584,9 @@ static int __init gxfb_probe(struct pci_
pci_release_region(pdev, 2);
}
- if (info)
- framebuffer_release(info);
+ if (gxfb_info)
+ framebuffer_release(gxfb_info);
+
return ret;
}
@@ -397,9 +612,7 @@ static void gxfb_remove(struct pci_dev *
}
static struct pci_device_id gxfb_id_table[] = {
- { PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_GX_VIDEO,
- PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
- 0xff0000, 0 },
+ { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_GX_VIDEO) },
{ 0, }
};
@@ -410,22 +623,30 @@ static struct pci_driver gxfb_driver = {
.id_table = gxfb_id_table,
.probe = gxfb_probe,
.remove = gxfb_remove,
+#ifdef CONFIG_PM
+ .suspend = gxfb_suspend,
+ .resume = gxfb_resume
+#endif
};
#ifndef MODULE
-static int __init gxfb_setup(char *options)
-{
+static int __init gxfb_setup(char *options) {
char *opt;
if (!options || !*options)
return 0;
- while ((opt = strsep(&options, ",")) != NULL) {
+ while((opt = strsep(&options, ",")) != NULL) {
if (!*opt)
continue;
- mode_option = opt;
+ if (!strncmp(opt, "fbsize:", 7))
+ fbsize = simple_strtoul(opt+7, NULL, 0);
+ else if (!strcmp(opt, "noclear"))
+ noclear = 1;
+ else
+ mode_option = opt;
}
return 0;
@@ -444,7 +665,6 @@ static int __init gxfb_init(void)
#endif
return pci_register_driver(&gxfb_driver);
}
-
static void __exit gxfb_cleanup(void)
{
pci_unregister_driver(&gxfb_driver);
@@ -456,5 +676,8 @@ module_exit(gxfb_cleanup);
module_param(mode_option, charp, 0);
MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])");
+module_param(fbsize, int, 0);
+MODULE_PARM_DESC(fbsize, "video memory size");
+
MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode GX");
MODULE_LICENSE("GPL");
diff -purN linux_2.6.24_org/drivers/video/geode/Kconfig linux_2.6.24_olpc/drivers/video/geode/Kconfig
--- linux_2.6.24_org/drivers/video/geode/Kconfig 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/Kconfig 2008-02-15 18:58:41.000000000 +0000
@@ -38,26 +38,6 @@ config FB_GEODE_GX
If unsure, say N.
-config FB_GEODE_GX_SET_FBSIZE
- bool "Manually specify the Geode GX framebuffer size"
- depends on FB_GEODE_GX
- default n
- ---help---
- If you want to manually specify the size of your GX framebuffer,
- say Y here, otherwise say N to dynamically probe it.
-
- Say N unless you know what you are doing.
-
-config FB_GEODE_GX_FBSIZE
- hex "Size of the GX framebuffer, in bytes"
- depends on FB_GEODE_GX_SET_FBSIZE
- default "0x1600000"
- ---help---
- Specify the size of the GX framebuffer. Normally, you will
- want this to be MB aligned. Common values are 0x80000 (8MB)
- and 0x1600000 (16MB). Don't change this unless you know what
- you are doing
-
config FB_GEODE_GX1
tristate "AMD Geode GX1 framebuffer support (EXPERIMENTAL)"
depends on FB && FB_GEODE && EXPERIMENTAL
diff -purN linux_2.6.24_org/drivers/video/geode/lxfb_core.c linux_2.6.24_olpc/drivers/video/geode/lxfb_core.c
--- linux_2.6.24_org/drivers/video/geode/lxfb_core.c 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/lxfb_core.c 2008-02-15 18:58:41.000000000 +0000
@@ -21,7 +21,8 @@
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
-#include <linux/uaccess.h>
+#include <asm/uaccess.h>
+#include <asm/olpc.h>
#include "lxfb.h"
@@ -35,186 +36,84 @@ static int fbsize;
*/
const struct fb_videomode geode_modedb[] __initdata = {
- /* 640x480-60 */
- { NULL, 60, 640, 480, 39682, 48, 8, 25, 2, 88, 2,
+ /* 640x480-60 VESA */
+ { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
+ 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 640x480-75 VESA */
+ { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
+ 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 640x480-85 VESA */
+ { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
+ 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 800x600-60 VESA */
+ { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 800x600-75 VESA */
+ { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 800x600-85 VESA */
+ { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1024x768-60 VESA */
+ { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
+ 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1024x768-75 VESA */
+ { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1024x768-85 VESA */
+ { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x960-60 VESA */
+ { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x960-85 VESA */
+ { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x1024-60 VESA */
+ { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x1024-75 VESA */
+ { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x1024-85 VESA */
+ { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 640x400-70 */
- { NULL, 70, 640, 400, 39770, 40, 8, 28, 5, 96, 2,
- FB_SYNC_HOR_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 640x480-70 */
- { NULL, 70, 640, 480, 35014, 88, 24, 15, 2, 64, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 640x480-72 */
- { NULL, 72, 640, 480, 32102, 120, 16, 20, 1, 40, 3,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 640x480-75 */
- { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 640x480-85 */
- { NULL, 85, 640, 480, 27780, 80, 56, 25, 1, 56, 3,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 640x480-90 */
- { NULL, 90, 640, 480, 26392, 96, 32, 22, 1, 64, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 640x480-100 */
- { NULL, 100, 640, 480, 23167, 104, 40, 25, 1, 64, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 640x480-60 */
- { NULL, 60, 640, 480, 39682, 48, 16, 25, 10, 88, 2,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 800x600-56 */
- { NULL, 56, 800, 600, 27901, 128, 24, 22, 1, 72, 2,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 800x600-60 */
- { NULL, 60, 800, 600, 25131, 72, 32, 23, 1, 136, 4,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 800x600-70 */
- { NULL, 70, 800, 600, 21873, 120, 40, 21, 4, 80, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 800x600-72 */
- { NULL, 72, 800, 600, 20052, 64, 56, 23, 37, 120, 6,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 800x600-75 */
- { NULL, 75, 800, 600, 20202, 160, 16, 21, 1, 80, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 800x600-85 */
- { NULL, 85, 800, 600, 17790, 152, 32, 27, 1, 64, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 800x600-90 */
- { NULL, 90, 800, 600, 16648, 128, 40, 28, 1, 88, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 800x600-100 */
- { NULL, 100, 800, 600, 14667, 136, 48, 27, 1, 88, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 800x600-60 */
- { NULL, 60, 800, 600, 25131, 88, 40, 23, 1, 128, 4,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 1024x768-60 */
- { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 1024x768-70 */
- { NULL, 70, 1024, 768, 13346, 144, 24, 29, 3, 136, 6,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 1024x768-72 */
- { NULL, 72, 1024, 768, 12702, 168, 56, 29, 4, 112, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1024x768-75 */
- { NULL, 75, 1024, 768, 12703, 176, 16, 28, 1, 96, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1024x768-85 */
- { NULL, 85, 1024, 768, 10581, 208, 48, 36, 1, 96, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1024x768-90 */
- { NULL, 90, 1024, 768, 9981, 176, 64, 37, 1, 112, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1024x768-100 */
- { NULL, 100, 1024, 768, 8825, 184, 72, 42, 1, 112, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1024x768-60 */
- { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 1152x864-60 */
- { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1152x864-70 */
- { NULL, 70, 1152, 864, 10254, 192, 72, 32, 8, 120, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1152x864-72 */
- { NULL, 72, 1152, 864, 9866, 200, 72, 33, 7, 128, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1152x864-75 */
- { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1152x864-85 */
- { NULL, 85, 1152, 864, 8357, 200, 72, 37, 3, 128, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1152x864-90 */
- { NULL, 90, 1152, 864, 7719, 208, 80, 42, 9, 128, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1152x864-100 */
- { NULL, 100, 1152, 864, 6947, 208, 80, 48, 3, 128, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1152x864-60 */
- { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 1280x1024-60 */
- { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1280x1024-70 */
- { NULL, 70, 1280, 1024, 7719, 224, 88, 38, 6, 136, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1280x1024-72 */
- { NULL, 72, 1280, 1024, 7490, 224, 88, 39, 7, 136, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1280x1024-75 */
- { NULL, 75, 1280, 1024, 7409, 248, 16, 38, 1, 144, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1280x1024-85 */
- { NULL, 85, 1280, 1024, 6351, 224, 64, 44, 1, 160, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1280x1024-90 */
- { NULL, 90, 1280, 1024, 5791, 240, 96, 51, 12, 144, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1280x1024-100 */
- { NULL, 100, 1280, 1024, 5212, 240, 96, 57, 6, 144, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1280x1024-60 */
- { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 1600x1200-60 */
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1600x1200-60 VESA */
{ NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1600x1200-70 */
- { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1600x1200-72 */
- { NULL, 72, 1600, 1200, 5053, 288, 112, 47, 13, 176, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1600x1200-75 */
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1600x1200-75 VESA */
{ NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1600x1200-85 */
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1600x1200-85 VESA */
{ NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1600x1200-90 */
- { NULL, 90, 1600, 1200, 3981, 304, 128, 60, 1, 176, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1600x1200-100 */
- { NULL, 100, 1600, 1200, 3563, 304, 128, 67, 1, 176, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1600x1200-60 */
- { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- FB_VMODE_NONINTERLACED, 0 },
- /* 1920x1440-60 */
- { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 208, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1920x1440-70 */
- { NULL, 70, 1920, 1440, 3593, 360, 152, 55, 8, 208, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1920x1440-72 */
- { NULL, 72, 1920, 1440, 3472, 360, 152, 68, 4, 208, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1920x1440-75 */
- { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
- /* 1920x1440-85 */
- { NULL, 85, 1920, 1440, 2929, 368, 152, 68, 1, 216, 3,
- 0, FB_VMODE_NONINTERLACED, 0 },
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1200x900-75 - CRT timings for the OLPC mode */
+ { NULL, 75, 1200, 900, 8049, 104, 240, 29, 54, 136, 3,
+ 0, FB_VMODE_NONINTERLACED, 0 }
};
+#ifdef CONFIG_OLPC
+const struct fb_videomode olpc_dcon_modedb[] __initdata = {
+ /* The only mode the DCON has is 1200x900 */
+ { NULL, 50, 1200, 900, 17460, 24, 8, 4, 5, 8, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, 0 }
+};
+#endif
+
static int lxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
if (var->xres > 1920 || var->yres > 1440)
@@ -255,8 +154,7 @@ static int lxfb_set_par(struct fb_info *
fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0);
}
- info->fix.line_length = lx_get_pitch(info->var.xres,
- info->var.bits_per_pixel);
+ info->fix.line_length = lx_get_pitch(info->var.xres, info->var.bits_per_pixel);
lx_set_mode(info);
return 0;
@@ -371,24 +269,61 @@ static int __init lxfb_map_video_memory(
writel(info->fix.smem_start & 0xFF000000,
par->dc_regs + DC_PHY_MEM_OFFSET);
- writel(0, par->dc_regs + DC_UNLOCK);
-
dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n",
info->fix.smem_len / 1024, info->fix.smem_start);
return 0;
}
+static int lxfb_set_gamma(struct fb_info *info, void * __user data)
+{
+ unsigned int gamma[LXFB_GAMMA_DWORDS];
+
+ if (copy_from_user(gamma, data, LXFB_GAMMA_SIZE))
+ return -EFAULT;
+
+ lx_set_gamma(info, gamma, LXFB_GAMMA_SIZE);
+ return 0;
+}
+
+static int lxfb_get_gamma(struct fb_info *info, void * __user data)
+{
+ unsigned int gamma[LXFB_GAMMA_DWORDS];
+ memset(gamma, 0, sizeof(gamma));
+
+ lx_get_gamma(info, gamma, LXFB_GAMMA_DWORDS);
+
+ return copy_to_user(data, gamma, LXFB_GAMMA_SIZE) ?
+ -EFAULT : 0;
+}
+
+static int lxfb_ioctl( struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
+{
+ switch(cmd) {
+ case FBIOSGAMMA:
+ return lxfb_set_gamma(info, (void * __user) arg);
+
+ case FBIOGGAMMA:
+ return lxfb_get_gamma(info, (void * __user) arg);
+ }
+
+ return -ENOTTY;
+}
+
static struct fb_ops lxfb_ops = {
.owner = THIS_MODULE,
.fb_check_var = lxfb_check_var,
.fb_set_par = lxfb_set_par,
.fb_setcolreg = lxfb_setcolreg,
.fb_blank = lxfb_blank,
+ .fb_ioctl = lxfb_ioctl,
/* No HW acceleration for now. */
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
+ .fb_powerdown = lx_shutdown,
+ .fb_powerup = lx_powerup,
};
static struct fb_info * __init lxfb_init_fbinfo(struct device *dev)
@@ -431,6 +366,45 @@ static struct fb_info * __init lxfb_init
return info;
}
+#ifdef CONFIG_PM
+
+static int lxfb_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct fb_info *info = pci_get_drvdata(pdev);
+
+ if (pdev->dev.power.power_state.event == state.event)
+ return 0;
+
+ if (state.event == PM_EVENT_SUSPEND) {
+
+ acquire_console_sem();
+ lx_shutdown(info);
+ fb_set_suspend(info, 1);
+ release_console_sem();
+ }
+
+ pdev->dev.power.power_state = state;
+ return 0;
+}
+
+static int lxfb_resume(struct pci_dev *pdev)
+{
+ struct fb_info *info = pci_get_drvdata(pdev);
+
+ acquire_console_sem();
+
+ /* Turn the engine completely on */
+
+ lx_powerup(info);
+ fb_set_suspend(info, 0);
+ release_console_sem();
+
+ pdev->dev.power.power_state = PMSG_ON;
+ return 0;
+}
+
+#endif
+
static int __init lxfb_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
@@ -467,6 +441,13 @@ static int __init lxfb_probe(struct pci_
modedb_ptr = (struct fb_videomode *) geode_modedb;
modedb_size = ARRAY_SIZE(geode_modedb);
+#ifdef CONFIG_OLPC
+ if (olpc_has_dcon()) {
+ modedb_ptr = (struct fb_videomode *) olpc_dcon_modedb;
+ modedb_size = ARRAY_SIZE(olpc_dcon_modedb);
+ }
+#endif
+
ret = fb_find_mode(&info->var, info, mode_option,
modedb_ptr, modedb_size, NULL, 16);
@@ -556,6 +537,10 @@ static struct pci_driver lxfb_driver = {
.id_table = lxfb_id_table,
.probe = lxfb_probe,
.remove = lxfb_remove,
+#ifdef CONFIG_PM
+ .suspend = lxfb_suspend,
+ .resume = lxfb_resume
+#endif
};
#ifndef MODULE
diff -purN linux_2.6.24_org/drivers/video/geode/lxfb.h linux_2.6.24_olpc/drivers/video/geode/lxfb.h
--- linux_2.6.24_org/drivers/video/geode/lxfb.h 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/lxfb.h 2008-02-15 18:58:41.000000000 +0000
@@ -25,10 +25,23 @@ void lx_set_mode(struct fb_info *);
void lx_get_gamma(struct fb_info *, unsigned int *, int);
void lx_set_gamma(struct fb_info *, unsigned int *, int);
unsigned int lx_framebuffer_size(void);
+int lx_shutdown(struct fb_info *);
+int lx_powerup(struct fb_info *);
int lx_blank_display(struct fb_info *, int);
void lx_set_palette_reg(struct fb_info *, unsigned int, unsigned int,
unsigned int, unsigned int);
+
+
+/* ioctl() defines */
+
+#define FBIOSGAMMA _IOW('F', 0x20, void *)
+#define FBIOGGAMMA _IOW('F', 0x21, void *)
+
+/* General definitions */
+#define LXFB_GAMMA_DWORDS 256 /* number of dwords in the gamma ram */
+#define LXFB_GAMMA_SIZE (LXFB_GAMMA_DWORDS * sizeof(unsigned int))
+
/* MSRS */
#define MSR_LX_GLD_CONFIG 0x48002001
@@ -127,7 +140,7 @@ void lx_set_palette_reg(struct fb_info *
#define DC_GFX_SCALE 0x90
#define DC_IRQ_FILT_CTL 0x94
-
+#define DC_IRQFILT_H_FILT_SEL 0x00000400
#define DC_IRQ 0xC8
#define DC_IRQ_MASK (1 << 0)
diff -purN linux_2.6.24_org/drivers/video/geode/lxfb_ops.c linux_2.6.24_olpc/drivers/video/geode/lxfb_ops.c
--- linux_2.6.24_org/drivers/video/geode/lxfb_ops.c 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/lxfb_ops.c 2008-02-15 18:58:41.000000000 +0000
@@ -11,11 +11,15 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/fb.h>
-#include <linux/uaccess.h>
-#include <linux/delay.h>
+#include <asm/uaccess.h>
+#include <asm/delay.h>
+#include <asm/olpc.h>
#include "lxfb.h"
+#define _GEODELX_
+#include "geode_regs.h"
+
/* TODO
* Support panel scaling
* Add acceleration
@@ -290,6 +294,19 @@ unsigned int lx_framebuffer_size(void)
{
unsigned int val;
+#ifdef CONFIG_OLPC
+ if (machine_is_olpc() && !olpc_has_vsa()) {
+ u32 hi,lo;
+ rdmsr(MSR_LX_GLIU0_P2D_RO0, lo, hi);
+
+ /* Top page number */
+ val = ((hi & 0xff) << 12) | ((lo & 0xfff00000) >> 20);
+ val -= (lo & 0x000fffff); /* Subtract bottom page number */
+ val += 1; /* Adjust page count */
+ return (val << 12);
+ }
+#endif
+
/* The frame buffer size is reported by a VSM in VSA II */
/* Virtual Register Class = 0x02 */
/* VG_MEM_SIZE (1MB units) = 0x00 */
@@ -301,6 +318,34 @@ unsigned int lx_framebuffer_size(void)
return (val << 20);
}
+void lx_set_gamma(struct fb_info *info, unsigned int *gamma, int len)
+{
+ int i;
+ struct lxfb_par *par = info->par;
+
+ writel(0, par->df_regs + DF_PAR);
+
+ /* Sequential writes to the data register will increment the
+ address automatically */
+
+ for(i = 0; i < len; i++)
+ writel(gamma[i] & 0xFFFFFF, par->df_regs + DF_PDR);
+
+ writel(readl(par->df_regs + DF_MISC) & ~DF_MISC_GAM_BYPASS,
+ par->df_regs + DF_MISC);
+}
+
+void lx_get_gamma(struct fb_info *info, unsigned int *gamma, int len)
+{
+ int i;
+ struct lxfb_par *par = info->par;
+
+ writel(0, par->df_regs + DF_PAR);
+
+ for(i = 0; i < len;i++)
+ gamma[i] = readl(par->df_regs + DF_PDR);
+}
+
void lx_set_mode(struct fb_info *info)
{
struct lxfb_par *par = info->par;
@@ -313,6 +358,7 @@ void lx_set_mode(struct fb_info *info)
int vactive, vblankstart, vsyncstart, vsyncend, vblankend, vtotal;
/* Unlock the DC registers */
+ readl(par->dc_regs + DC_UNLOCK);
writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK);
lx_graphics_disable(info);
@@ -483,54 +529,408 @@ void lx_set_palette_reg(struct fb_info *
writel(val, par->dc_regs + DC_PAL_DATA);
}
+static int lx_blank_mode = FB_BLANK_UNBLANK;
+
int lx_blank_display(struct fb_info *info, int blank_mode)
{
struct lxfb_par *par = info->par;
- u32 dcfg, fp_pm;
- int blank, hsync, vsync;
+ u32 dcfg, val;
+
+ if (blank_mode == lx_blank_mode)
+ return 0;
+
+ writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK);
+
+ if (lx_blank_mode == FB_BLANK_POWERDOWN) {
+ val = readl(par->df_regs + DF_FP_PM);
+ writel(val | DF_FP_PM_P, par->df_regs + DF_FP_PM);
+ val = readl(par->df_regs + DF_MISC) & ~DF_MISC_DAC_PWRDN;
+ writel(val, par->df_regs + DF_MISC);
+
+ val = readl(par->dc_regs + DC_GENERAL_CFG) | DC_GCFG_DFLE;
+ writel(val, par->dc_regs + DC_GENERAL_CFG);
+
+ val = readl(par->dc_regs + DC_DISPLAY_CFG) | DC_DCFG_TGEN;
+ writel(val, par->dc_regs + DC_DISPLAY_CFG);
+ }
+
+ dcfg = readl(par->df_regs + DF_DISPLAY_CFG);
/* CRT power saving modes. */
switch (blank_mode) {
case FB_BLANK_UNBLANK:
- blank = 0; hsync = 1; vsync = 1;
+ dcfg |= DF_DCFG_CRT_EN | DF_DCFG_HSYNC_EN | DF_DCFG_VSYNC_EN;
+ dcfg |= DF_DCFG_DAC_BL_EN;
break;
case FB_BLANK_NORMAL:
- blank = 1; hsync = 1; vsync = 1;
+ dcfg |= DF_DCFG_CRT_EN | DF_DCFG_HSYNC_EN | DF_DCFG_VSYNC_EN;
+ dcfg |= DF_DCFG_DAC_BL_EN;
break;
case FB_BLANK_VSYNC_SUSPEND:
- blank = 1; hsync = 1; vsync = 0;
+ dcfg |= DF_DCFG_CRT_EN | DF_DCFG_HSYNC_EN | DF_DCFG_DAC_BL_EN;
+ dcfg &= ~DF_DCFG_VSYNC_EN;
break;
case FB_BLANK_HSYNC_SUSPEND:
- blank = 1; hsync = 0; vsync = 1;
+ dcfg |= DF_DCFG_CRT_EN | DF_DCFG_VSYNC_EN | DF_DCFG_DAC_BL_EN;
+ dcfg &= ~DF_DCFG_HSYNC_EN;
break;
case FB_BLANK_POWERDOWN:
- blank = 1; hsync = 0; vsync = 0;
+ dcfg &= ~DF_DCFG_DAC_BL_EN;
+ dcfg &= ~(DF_DCFG_CRT_EN | DF_DCFG_HSYNC_EN | DF_DCFG_VSYNC_EN);
break;
default:
+ writel(0, par->dc_regs + DC_UNLOCK);
return -EINVAL;
}
- dcfg = readl(par->df_regs + DF_DISPLAY_CFG);
- dcfg &= ~(DF_DCFG_DAC_BL_EN
- | DF_DCFG_HSYNC_EN | DF_DCFG_VSYNC_EN);
- if (!blank)
- dcfg |= DF_DCFG_DAC_BL_EN;
- if (hsync)
- dcfg |= DF_DCFG_HSYNC_EN;
- if (vsync)
- dcfg |= DF_DCFG_VSYNC_EN;
- writel(dcfg, par->df_regs + DF_DISPLAY_CFG);
+ /* Turn off the engine when we are in power down mode */
+ if (blank_mode == FB_BLANK_POWERDOWN) {
+ val = readl(par->df_regs + DF_MISC) | DF_MISC_DAC_PWRDN;
+ writel(val, par->df_regs + DF_MISC);
+
+ val = readl(par->dc_regs + DC_DISPLAY_CFG);
+ val &= ~DC_DCFG_TGEN;
+ writel(val, par->dc_regs + DC_DISPLAY_CFG);
+
+ udelay(1000);
+
+ val = readl(par->dc_regs + DC_GENERAL_CFG) & ~DC_GCFG_DFLE;
+ writel(val, par->dc_regs + DC_GENERAL_CFG);
+
+ val = readl(par->df_regs + DF_FP_PM);
+ writel(val & ~DF_FP_PM_P, par->df_regs + DF_FP_PM);
+ }
+ writel(0, par->dc_regs + DC_UNLOCK);
+
+ lx_blank_mode = blank_mode;
+ return 0;
+}
+
+static struct geoderegs saved_regs;
+
+static void lx_save_regs(struct fb_info *info, struct geoderegs *regs)
+{
+ struct lxfb_par *par = info->par;
+ int i;
+ u32 filt;
+
+ /* Wait for the command buffer to empty */
+ while(!(readl(par->gp_regs + 0x44) & (1 << 4)));
+
+ /* Unlock the DC */
+ writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK);
+
+ rdmsrl(MSR_LX_DF_PADSEL, regs->msr.padsel);
+ rdmsrl(MSR_LX_GLCP_DOTPLL, regs->msr.dotpll);
+ rdmsrl(MSR_LX_DF_GLCONFIG, regs->msr.dfglcfg);
+ rdmsrl(MSR_LX_DC_SPARE, regs->msr.dcspare);
+
+ writel(0x4758, par->dc_regs + 0x00);
+
+ memcpy(regs->gp.b, par->gp_regs, GP_REG_SIZE);
+ memcpy(regs->dc.b, par->dc_regs, DC_REG_SIZE);
+ memcpy(regs->vp.b, par->df_regs, VP_REG_SIZE);
+ memcpy(regs->fp.b, par->df_regs + VP_FP_START, FP_REG_SIZE);
+
+ /* Save the palette */
+ writel(0, par->dc_regs + 0x70);
/* Power on/off flat panel */
+ for(i = 0; i < DC_PAL_SIZE; i++)
+ regs->pal[i] = readl(par->dc_regs + 0x74);
- if (par->output & OUTPUT_PANEL) {
- fp_pm = readl(par->df_regs + DF_FP_PM);
- if (blank_mode == FB_BLANK_POWERDOWN)
- fp_pm &= ~DF_FP_PM_P;
- else
- fp_pm |= DF_FP_PM_P;
- writel(fp_pm, par->df_regs + DF_FP_PM);
+ /* save the filter coefficients */
+
+ filt = readl(par->dc_regs + 0x94);
+ filt |= DC_IRQFILT_H_FILT_SEL;
+
+ for(i = 0; i < DC_HFILT_SIZE; i++) {
+ writel((filt & 0xFFFFFF00) | i, par->dc_regs + 0x94);
+ regs->hcoeff[i << 1] = readl(par->dc_regs + 0x98);
+ regs->hcoeff[(i << 1) + 1] = readl(par->dc_regs + 0x9c);
+ }
+
+ filt &= ~DC_IRQFILT_H_FILT_SEL;
+
+ for(i = 0; i < DC_VFILT_SIZE; i++) {
+ writel((filt & 0xFFFFFF00) | i, par->dc_regs + 0x94);
+ regs->vcoeff[i] = readl(par->dc_regs + 0x98);
}
+ /* Save the vg filter coefficients */
+ for(i = 0; i < VP_COEFF_COUNT; i++)
+ regs->vp_coeff[i] =
+ readl(par->df_regs + 0x1000 + (i << 2));
+
+ /* Save the VP gamma */
+
+ writel(0, par->df_regs + 0x38);
+
+ for(i = 0; i <= 0xFF; i++)
+ regs->gamma[i] = readl(par->df_regs + 0x40);
+}
+
+static void lx_restore_dc(struct lxfb_par *par, struct geoderegs *regs)
+{
+ u32 filt;
+ int i;
+
+ /* Unlock the registers */
+ writel(DC_UNLOCK_CODE, par->dc_regs + 0x00);
+
+ /* Restore the framebuffer offset */
+ writel(regs->dc.r.gliu0_mem_offset, par->dc_regs + 0x84);
+
+ /* Blank the configuration registers while we restore */
+ writel(0, par->dc_regs + 0x04);
+ writel(0, par->dc_regs + 0x08);
+
+ /* Restore the bulk of the registers */
+
+ writel(regs->dc.r.arb, par->dc_regs + 0x0C);
+ writel(regs->dc.r.fb_st_offset, par->dc_regs + 0x10);
+ writel(regs->dc.r.cb_st_offset, par->dc_regs + 0x14);
+ writel(regs->dc.r.curs_st_offset, par->dc_regs + 0x18);
+
+ /* skip 0x1c */
+
+ writel(regs->dc.r.vid_y_st_offset, par->dc_regs + 0x20);
+ writel(regs->dc.r.vid_u_st_offset, par->dc_regs + 0x24);
+ writel(regs->dc.r.vid_v_st_offset, par->dc_regs + 0x28);
+
+ writel(regs->dc.r.dctop, par->dc_regs + 0x2c);
+ writel(regs->dc.r.line_size, par->dc_regs + 0x30);
+ writel(regs->dc.r.gfx_pitch, par->dc_regs + 0x34);
+ writel(regs->dc.r.vid_yuv_pitch, par->dc_regs + 0x38);
+ writel(regs->dc.r.h_active_timing, par->dc_regs + 0x40);
+ writel(regs->dc.r.h_blank_timing, par->dc_regs + 0x44);
+ writel(regs->dc.r.h_sync_timing, par->dc_regs + 0x48);
+ writel(regs->dc.r.v_active_timing, par->dc_regs + 0x50);
+ writel(regs->dc.r.v_blank_timing, par->dc_regs + 0x54);
+ writel(regs->dc.r.v_sync_timing, par->dc_regs + 0x58);
+ writel(regs->dc.r.fbactive, par->dc_regs + 0x5c);
+ writel(regs->dc.r.dc_cursor_x, par->dc_regs + 0x60);
+ writel(regs->dc.r.dc_cursor_y, par->dc_regs + 0x64);
+
+ /* skip 0x68, 0x6c, 0x70, 0x74, 0x78, 0x7c */
+
+ writel(regs->dc.r.dc_vid_ds_delta, par->dc_regs + 0x80);
+
+ /* 0x84 was written above */
+
+ writel(regs->dc.r.dv_ctl | 0x01, par->dc_regs + 0x88);
+ writel(regs->dc.r.gfx_scale, par->dc_regs + 0x90);
+ writel(regs->dc.r.irq_filt_ctl, par->dc_regs + 0x94);
+
+ /* skip 0x98, 0x9c */
+
+ writel(regs->dc.r.vbi_event_ctl, par->dc_regs + 0xA0);
+ writel(regs->dc.r.vbi_odd_ctl, par->dc_regs + 0xA4);
+ writel(regs->dc.r.vbi_hor, par->dc_regs + 0xA8);
+ writel(regs->dc.r.vbi_ln_odd, par->dc_regs + 0xAC);
+ writel(regs->dc.r.vbi_ln_event, par->dc_regs + 0xB0);
+ writel(regs->dc.r.vbi_pitch, par->dc_regs + 0xB4);
+ writel(regs->dc.r.clr_key, par->dc_regs + 0xB8);
+ writel(regs->dc.r.clr_key_mask, par->dc_regs + 0xBC);
+ writel(regs->dc.r.clr_key_x, par->dc_regs + 0xC0);
+ writel(regs->dc.r.clr_key_y, par->dc_regs + 0xC4);
+ writel(regs->dc.r.irq, par->dc_regs + 0xC8);
+ writel(regs->dc.r.genlk_ctrl, par->dc_regs + 0xD4);
+ writel(regs->dc.r.vid_even_y_st_offset, par->dc_regs + 0xD8);
+ writel(regs->dc.r.vid_even_u_st_offset, par->dc_regs + 0xDC);
+ writel(regs->dc.r.vid_even_v_st_offset, par->dc_regs + 0xE0);
+ writel(regs->dc.r.v_active_even_timing, par->dc_regs + 0xE4);
+ writel(regs->dc.r.v_blank_even_timing, par->dc_regs + 0xE8);
+ writel(regs->dc.r.v_sync_even_timing, par->dc_regs + 0xEC);
+
+ /* Restore the palette */
+ writel(0, par->dc_regs + 0x70);
+
+ for(i = 0; i < DC_PAL_SIZE; i++)
+ writel(regs->pal[i], par->dc_regs + 0x74);
+
+ /* Restore the horizontal filter coefficients */
+ filt = readl(par->dc_regs + 0x94);
+ filt |= DC_IRQFILT_H_FILT_SEL;
+
+ for(i = 0; i < DC_HFILT_SIZE; i++) {
+ writel(((filt & 0xFFFFFF00) | i), par->dc_regs + 0x94);
+ writel(regs->hcoeff[i << 1], par->dc_regs + 0x98);
+ writel(regs->hcoeff[(i << 1) + 1], par->dc_regs + 0x9c);
+ }
+
+ filt &= ~DC_IRQFILT_H_FILT_SEL;
+
+ for(i = 0; i < DC_VFILT_SIZE; i++) {
+ writel(((filt & 0xFFFFFF00) | i), par->dc_regs + 0x94);
+ writel(regs->vcoeff[i], par->dc_regs + 0x98);
+ }
+
+ /* Turn on the dotpll */
+ lx_set_dotpll((u32) (regs->msr.dotpll >> 32));
+
+ /* Restore MSRs */
+ wrmsrl(MSR_LX_DC_SPARE, regs->msr.dcspare);
+
+ /* Restore the configuration registers */
+
+ writel(regs->dc.r.dcfg, par->dc_regs + 0x08);
+ writel(regs->dc.r.gcfg, par->dc_regs + 0x04);
+
+ /* Lock the DC again */
+ writel(0, par->dc_regs + 0x00);
+}
+
+static void lx_restore_vp(struct lxfb_par *par, struct geoderegs *regs)
+{
+ u32 val;
+ int i;
+
+ /* Restore MSRs */
+
+ wrmsrl(MSR_LX_DF_GLCONFIG, regs->msr.dfglcfg);
+ wrmsrl(MSR_LX_DF_PADSEL, regs->msr.padsel);
+
+ /* Restore the registers */
+
+ writel((u32) regs->vp.r.vx, par->df_regs + 0x10);
+ writel((u32) regs->vp.r.vy, par->df_regs + 0x18);
+ writel((u32) regs->vp.r.vs, par->df_regs + 0x20);
+ writel((u32) regs->vp.r.vck, par->df_regs + 0x28);
+ writel((u32) regs->vp.r.vcm, par->df_regs + 0x30);
+ /* skip 0x38 and 0x40 */
+ writel((u32) regs->vp.r.slr, par->df_regs + 0x48);
+ writel((u32) regs->vp.r.misc, par->df_regs + 0x50);
+ /* skip 0x58 */
+ writel((u32) regs->vp.r.vys, par->df_regs + 0x60);
+ writel((u32) regs->vp.r.vxs, par->df_regs + 0x68);
+ writel((u32) regs->vp.r.vde, par->df_regs + 0x98);
+ writel((u32) regs->vp.r.cck, par->df_regs + 0xA0);
+ writel((u32) regs->vp.r.ccm, par->df_regs + 0xA8);
+ writel((u32) regs->vp.r.cc1, par->df_regs + 0xB0);
+ writel((u32) regs->vp.r.cc2, par->df_regs + 0xB8);
+ writel((u32) regs->vp.r.a1x, par->df_regs + 0xC0);
+ writel((u32) regs->vp.r.a1y, par->df_regs + 0xC8);
+ writel((u32) regs->vp.r.a1c, par->df_regs + 0xD0);
+ writel((u32) regs->vp.r.a1t, par->df_regs + 0xD8);
+ writel((u32) regs->vp.r.a2x, par->df_regs + 0xE0);
+ writel((u32) regs->vp.r.a2y, par->df_regs + 0xE8);
+ writel((u32) regs->vp.r.a2c, par->df_regs + 0xF0);
+ writel((u32) regs->vp.r.a2t, par->df_regs + 0xF8);
+ writel((u32) regs->vp.r.a3x, par->df_regs + 0x100);
+ writel((u32) regs->vp.r.a3y, par->df_regs + 0x108);
+ writel((u32) regs->vp.r.a3c, par->df_regs + 0x110);
+ writel((u32) regs->vp.r.a3t, par->df_regs + 0x118);
+ writel((u32) regs->vp.r.vrr, par->df_regs + 0x120);
+ writel((u32) regs->vp.r.vye, par->df_regs + 0x138);
+ writel((u32) regs->vp.r.a1ye, par->df_regs + 0x140);
+ writel((u32) regs->vp.r.a2ye, par->df_regs + 0x148);
+ writel((u32) regs->vp.r.a3ye, par->df_regs + 0x150);
+
+ /* Panel */
+
+ writel((u32) regs->fp.r.pt1, par->df_regs + 0x400);
+ writel((u32) regs->fp.r.pt2, par->df_regs + 0x408);
+ writel((u32) regs->fp.r.dfc, par->df_regs + 0x418);
+
+ /* Restore panel power */
+
+ val = readl(par->df_regs + 0x410);
+
+ if (regs->fp.r.pm & (1 << 24)) {
+ if (!(val & 0x09))
+ writel(regs->fp.r.pm, par->df_regs + 0x410);
+ }
+ else {
+ if (!(val & 0x05))
+ writel(regs->fp.r.pm, par->df_regs + 0x410);
+ }
+
+ /* Restore the vp palette */
+
+ writel(0, par->df_regs + 0x38);
+
+ for(i = 0; i <= 0xFF; i++)
+ writel((u32) regs->gamma[i], par->df_regs + 0x40);
+
+ /* Restore filter coefficients */
+
+ for(i = 0; i < VP_COEFF_COUNT; i++)
+ writel(regs->vp_coeff[i],
+ par->df_regs + 0x1000 + (i << 2));
+
+ /* Restore the configuration registers */
+
+ writel((u32) regs->vp.r.dcfg, par->df_regs + 0x08);
+ writel((u32) regs->vp.r.vcfg, par->df_regs + 0x00);
+}
+
+static void lx_restore_gp(struct lxfb_par *par, struct geoderegs *regs)
+{
+ writel(regs->gp.r.dst_offset, par->gp_regs + 0x00);
+ writel(regs->gp.r.src_offset, par->gp_regs + 0x04);
+ writel(regs->gp.r.stride, par->gp_regs + 0x08);
+ writel(regs->gp.r.wid_height, par->gp_regs + 0x0C);
+ writel(regs->gp.r.src_color_fg, par->gp_regs + 0x10);
+ writel(regs->gp.r.src_color_bg, par->gp_regs + 0x14);
+ writel(regs->gp.r.pat_color_0, par->gp_regs + 0x18);
+ writel(regs->gp.r.pat_color_1, par->gp_regs + 0x1C);
+ writel(regs->gp.r.pat_color_2, par->gp_regs + 0x20);
+ writel(regs->gp.r.pat_color_3, par->gp_regs + 0x24);
+ writel(regs->gp.r.pat_color_4, par->gp_regs + 0x28);
+ writel(regs->gp.r.pat_color_5, par->gp_regs + 0x2C);
+ writel(regs->gp.r.pat_data_0, par->gp_regs + 0x30);
+ writel(regs->gp.r.pat_data_1, par->gp_regs + 0x34);
+
+ /* Writing to these registers would cause a blt to happen */
+ /* 0x38, 0x3c, 0x40 */
+
+ /* Status register (0x44) is read only */
+
+ writel(regs->gp.r.hst_src, par->gp_regs + 0x48);
+ writel(regs->gp.r.base_offset, par->gp_regs + 0x4c);
+ writel(regs->gp.r.cmd_top, par->gp_regs + 0x50);
+ writel(regs->gp.r.cmd_bot, par->gp_regs + 0x54);
+ writel(regs->gp.r.cmd_read, par->gp_regs + 0x58);
+ writel(regs->gp.r.cmd_write, par->gp_regs + 0x5C);
+ writel(regs->gp.r.ch3_offset, par->gp_regs + 0x60);
+ writel(regs->gp.r.ch3_mode_str, par->gp_regs + 0x64);
+ writel(regs->gp.r.ch3_width, par->gp_regs + 0x6C);
+ writel(regs->gp.r.ch3_hsrc, par->gp_regs + 0x70);
+
+ writel(regs->gp.r.int_cntrl, par->gp_regs + 0x70);
+}
+
+static void lx_restore_regs(struct fb_info *info, struct geoderegs *regs)
+{
+ struct lxfb_par *par = info->par;
+
+ lx_restore_gp(par, regs);
+ lx_restore_vp(par, regs);
+ lx_restore_dc(par, regs);
+}
+
+static int lx_power_on = 1;
+
+int lx_shutdown(struct fb_info *info)
+{
+ if (lx_power_on == 0)
+ return 0;
+
+ lx_save_regs(info, &saved_regs);
+ lx_graphics_disable(info);
+
+ lx_power_on = 0;
+ return 0;
+}
+
+int lx_powerup(struct fb_info *info)
+{
+ if (lx_power_on == 1)
+ return 0;
+
+ lx_restore_regs(info, &saved_regs);
+
+ lx_power_on = 1;
return 0;
}
diff -purN linux_2.6.24_org/drivers/video/geode/Makefile linux_2.6.24_olpc/drivers/video/geode/Makefile
--- linux_2.6.24_org/drivers/video/geode/Makefile 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/Makefile 2008-02-15 18:58:41.000000000 +0000
@@ -5,5 +5,5 @@ obj-$(CONFIG_FB_GEODE_GX) += gxfb.o
obj-$(CONFIG_FB_GEODE_LX) += lxfb.o
gx1fb-objs := gx1fb_core.o display_gx1.o video_cs5530.o
-gxfb-objs := gxfb_core.o display_gx.o video_gx.o
+gxfb-objs := gxfb_core.o display_gx.o video_gx.o suspend_gx.o
lxfb-objs := lxfb_core.o lxfb_ops.o
diff -purN linux_2.6.24_org/drivers/video/geode/suspend_gx.c linux_2.6.24_olpc/drivers/video/geode/suspend_gx.c
--- linux_2.6.24_org/drivers/video/geode/suspend_gx.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/video/geode/suspend_gx.c 2008-02-15 18:58:41.000000000 +0000
@@ -0,0 +1,272 @@
+#include <linux/fb.h>
+#include <asm/io.h>
+#include <asm/msr.h>
+
+#include "geodefb.h"
+#include "video_gx.h"
+
+void gx_set_dotpll(struct fb_info *info, struct geoderegs *regs)
+{
+ int timeout = 1000;
+
+ u64 rstpll, dotpll;
+
+ rdmsrl(MSR_GLCP_SYS_RSTPLL, rstpll);
+ rdmsrl(MSR_GLCP_DOTPLL, dotpll);
+
+ dotpll &= 0x00000000ffffffffull;
+ dotpll |= regs->msr.dotpll & 0xffffffff00000000ull;
+
+ dotpll |= MSR_GLCP_DOTPLL_DOTRESET;
+ dotpll &= ~MSR_GLCP_DOTPLL_BYPASS;
+
+ wrmsrl(MSR_GLCP_DOTPLL, dotpll);
+
+ rstpll |= (regs->msr.rstpll &
+ ( MSR_GLCP_SYS_RSTPLL_DOTPREDIV2 |
+ MSR_GLCP_SYS_RSTPLL_DOTPREMULT2 |
+ MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3));
+
+ wrmsrl(MSR_GLCP_SYS_RSTPLL, rstpll);
+ dotpll &= ~(MSR_GLCP_DOTPLL_DOTRESET);
+ wrmsrl(MSR_GLCP_DOTPLL, dotpll);
+
+ do {
+ rdmsrl(MSR_GLCP_DOTPLL, dotpll);
+ } while (timeout-- && !(dotpll & MSR_GLCP_DOTPLL_LOCK));
+}
+
+/* FIXME: Make sure nothing is read to clear */
+
+void gx_save_regs(struct fb_info *info, struct geoderegs *regs)
+{
+ struct geodefb_par *par = info->par;
+ int i;
+
+ /* Wait for the BLT engine to stop being busy */
+ while(readl(par->gp_regs + 0x44) & 0x05);
+
+ rdmsrl(GX_VP_MSR_PAD_SELECT, regs->msr.padsel);
+ rdmsrl(MSR_GLCP_DOTPLL, regs->msr.dotpll);
+ rdmsrl(MSR_GLCP_SYS_RSTPLL, regs->msr.rstpll);
+
+ writel(0x4758, par->dc_regs + 0x00);
+
+ memcpy(regs->gp.b, par->gp_regs, GP_REG_SIZE);
+ memcpy(regs->dc.b, par->dc_regs, DC_REG_SIZE);
+ memcpy(regs->vp.b, par->vid_regs, VP_REG_SIZE);
+ memcpy(regs->fp.b, par->vid_regs + 0x400, FP_REG_SIZE);
+
+ /* Save the palettes */
+ writel(0, par->dc_regs + 0x70);
+
+ for(i = 0; i < DC_PAL_SIZE; i++)
+ regs->pal[i] = readl(par->dc_regs + 0x74);
+
+ writel(0, par->vid_regs + 0x38);
+
+ for(i = 0; i < 0xFF; i++)
+ regs->gamma[i] = readl(par->vid_regs + 0x40);
+}
+
+void gx_restore_regs(struct fb_info *info, struct geoderegs *regs)
+{
+ struct geodefb_par *par = info->par;
+ u32 val, i;
+
+ /* DOTPLL */
+ gx_set_dotpll(info, regs);
+
+ /* GP */
+
+ writel(regs->gp.r.dst_offset, par->gp_regs + 0x00);
+ writel(regs->gp.r.src_offset, par->gp_regs + 0x04);
+ writel(regs->gp.r.stride, par->gp_regs + 0x08);
+ writel(regs->gp.r.wid_height, par->gp_regs + 0x0C);
+ writel(regs->gp.r.src_color_fg, par->gp_regs + 0x10);
+ writel(regs->gp.r.src_color_bg, par->gp_regs + 0x14);
+ writel(regs->gp.r.pat_color_0, par->gp_regs + 0x18);
+ writel(regs->gp.r.pat_color_1, par->gp_regs + 0x1C);
+ writel(regs->gp.r.pat_color_2, par->gp_regs + 0x20);
+ writel(regs->gp.r.pat_color_3, par->gp_regs + 0x24);
+ writel(regs->gp.r.pat_color_4, par->gp_regs + 0x28);
+ writel(regs->gp.r.pat_color_5, par->gp_regs + 0x2C);
+ writel(regs->gp.r.pat_data_0, par->gp_regs + 0x30);
+ writel(regs->gp.r.pat_data_1, par->gp_regs + 0x34);
+
+ /* Don't write the raster / vector / blt mode regs */
+ /* status register is read only */
+
+ writel(regs->gp.r.hst_src, par->gp_regs + 0x48);
+ writel(regs->gp.r.base_offset, par->gp_regs + 0x4c);
+
+ /* DC */
+
+ /* Write the unlock value */
+ writel(0x4758, par->dc_regs + 0x00);
+
+ writel(0, par->dc_regs + 0x70);
+
+ for(i = 0; i < DC_PAL_SIZE; i++)
+ writel(regs->pal[i], par->dc_regs + 0x74);
+
+ /* Write the gcfg register without the enables */
+ writel(regs->dc.r.gcfg & ~0x0F, par->dc_regs + 0x04);
+
+ /* Write the vcfg register without the enables */
+ writel(regs->dc.r.dcfg & ~0x19, par->dc_regs + 0x08);
+
+ /* Write the rest of the active registers */
+
+ writel(regs->dc.r.fb_st_offset, par->dc_regs + 0x10);
+ writel(regs->dc.r.cb_st_offset, par->dc_regs + 0x14);
+ writel(regs->dc.r.curs_st_offset, par->dc_regs + 0x18);
+ writel(regs->dc.r.icon_st_offset, par->dc_regs + 0x1C);
+ writel(regs->dc.r.vid_y_st_offset, par->dc_regs + 0x20);
+ writel(regs->dc.r.vid_u_st_offset, par->dc_regs + 0x24);
+ writel(regs->dc.r.vid_v_st_offset, par->dc_regs + 0x28);
+ writel(regs->dc.r.line_size, par->dc_regs + 0x30);
+ writel(regs->dc.r.gfx_pitch, par->dc_regs + 0x34);
+ writel(regs->dc.r.vid_yuv_pitch, par->dc_regs + 0x38);
+ writel(regs->dc.r.h_active_timing, par->dc_regs + 0x40);
+ writel(regs->dc.r.h_blank_timing, par->dc_regs + 0x44);
+ writel(regs->dc.r.h_sync_timing, par->dc_regs + 0x48);
+ writel(regs->dc.r.v_active_timing, par->dc_regs + 0x50);
+ writel(regs->dc.r.v_blank_timing, par->dc_regs + 0x54);
+ writel(regs->dc.r.v_sync_timing, par->dc_regs + 0x58);
+ writel(regs->dc.r.dc_cursor_x, par->dc_regs + 0x60);
+ writel(regs->dc.r.dc_cursor_y, par->dc_regs + 0x64);
+ writel(regs->dc.r.dc_icon_x, par->dc_regs + 0x68);
+
+ /* Don't write the line_cnt or diag registers */
+
+ writel(regs->dc.r.dc_vid_ds_delta, par->dc_regs + 0x80);
+ writel(regs->dc.r.gliu0_mem_offset, par->dc_regs + 0x84);
+ writel(regs->dc.r.dv_acc, par->dc_regs + 0x8C);
+
+ /* VP */
+
+ /* MSR */
+ wrmsrl(GX_VP_MSR_PAD_SELECT, regs->msr.padsel);
+
+ writel(0, par->vid_regs + 0x38);
+
+ for(i = 0; i < 0xFF; i++)
+ writel((u32) regs->gamma[i], par->vid_regs + 0x40);
+
+ /* Don't enable video yet */
+ writel((u32) regs->vp.r.vcfg & ~0x01, par->vid_regs + 0x00);
+
+ /* Don't enable the CRT yet */
+ writel((u32) regs->vp.r.dcfg & ~0x0F, par->vid_regs + 0x08);
+
+ /* Write the rest of the VP registers */
+
+ writel((u32) regs->vp.r.vx, par->vid_regs + 0x10);
+ writel((u32) regs->vp.r.vy, par->vid_regs + 0x18);
+ writel((u32) regs->vp.r.vs, par->vid_regs + 0x20);
+ writel((u32) regs->vp.r.vck, par->vid_regs + 0x28);
+ writel((u32) regs->vp.r.vcm, par->vid_regs + 0x30);
+ writel((u32) regs->vp.r.misc, par->vid_regs + 0x50);
+ writel((u32) regs->vp.r.ccs, par->vid_regs + 0x58);
+ writel((u32) regs->vp.r.vdc, par->vid_regs + 0x78);
+ writel((u32) regs->vp.r.vco, par->vid_regs + 0x80);
+ writel((u32) regs->vp.r.crc, par->vid_regs + 0x88);
+ writel((u32) regs->vp.r.vde, par->vid_regs + 0x98);
+ writel((u32) regs->vp.r.cck, par->vid_regs + 0xA0);
+ writel((u32) regs->vp.r.ccm, par->vid_regs + 0xA8);
+ writel((u32) regs->vp.r.cc1, par->vid_regs + 0xB0);
+ writel((u32) regs->vp.r.cc2, par->vid_regs + 0xB8);
+ writel((u32) regs->vp.r.a1x, par->vid_regs + 0xC0);
+ writel((u32) regs->vp.r.a1y, par->vid_regs + 0xC8);
+ writel((u32) regs->vp.r.a1c, par->vid_regs + 0xD0);
+ writel((u32) regs->vp.r.a1t, par->vid_regs + 0xD8);
+ writel((u32) regs->vp.r.a2x, par->vid_regs + 0xE0);
+ writel((u32) regs->vp.r.a2y, par->vid_regs + 0xE8);
+ writel((u32) regs->vp.r.a2c, par->vid_regs + 0xF0);
+ writel((u32) regs->vp.r.a2t, par->vid_regs + 0xF8);
+ writel((u32) regs->vp.r.a3x, par->vid_regs + 0x100);
+ writel((u32) regs->vp.r.a3y, par->vid_regs + 0x108);
+ writel((u32) regs->vp.r.a3c, par->vid_regs + 0x110);
+ writel((u32) regs->vp.r.a3t, par->vid_regs + 0x118);
+ writel((u32) regs->vp.r.vrr, par->vid_regs + 0x120);
+
+
+ /* FP registers */
+
+ writel((u32) regs->fp.r.pt1, par->vid_regs + 0x400);
+ writel((u32) regs->fp.r.pt2, par->vid_regs + 0x408);
+
+ writel((u32) regs->fp.r.dfc, par->vid_regs + 0x418);
+ writel(regs->fp.r.blfsr, par->vid_regs + 0x420);
+ writel(regs->fp.r.rlfsr, par->vid_regs + 0x428);
+ writel(regs->fp.r.fmi, par->vid_regs + 0x430);
+ writel(regs->fp.r.fmd, par->vid_regs + 0x438);
+ writel(regs->fp.r.dca, par->vid_regs + 0x448);
+ writel(regs->fp.r.dmd, par->vid_regs + 0x450);
+ writel(regs->fp.r.crc, par->vid_regs + 0x458);
+ writel(regs->fp.r.fbb, par->vid_regs + 0x460);
+
+ /* Final enables */
+
+ val = readl(par->vid_regs + 0x410);
+
+ /* Control the panel */
+ if (regs->fp.r.pm & (1 << 24)) {
+
+ if (!(val & 0x09))
+ writel(regs->fp.r.pm, par->vid_regs + 0x410);
+ }
+ else {
+ if (!(val & 0x05))
+ writel(regs->fp.r.pm, par->vid_regs + 0x410);
+ }
+
+ /* Turn everything on */
+
+ writel(regs->dc.r.gcfg, par->dc_regs + 0x04);
+ writel((u32) regs->vp.r.vcfg, par->vid_regs + 0x00);
+ writel((u32) regs->vp.r.dcfg, par->vid_regs + 0x08);
+ writel(regs->dc.r.dcfg, par->dc_regs + 0x08);
+}
+
+
+#ifdef DEBUG
+
+void dump_regs(struct fb_info *info, int mode) {
+
+ struct geodefb_par *par = info->par;
+ u32 val;
+ int i;
+
+ if (mode == 0) {
+ for(i = 0; i < GP_REG_SIZE; i += 4) {
+ val = readl(par->gp_regs + i);
+ }
+ }
+
+ if (mode == 1) {
+ writel(0x4758, par->dc_regs + 0x00);
+
+ for(i = 0; i < DC_REG_SIZE; i += 4) {
+ val = readl(par->dc_regs + i);
+ printk("DC%x: %x\n", i, val);
+ }
+ }
+
+ if (mode == 2) {
+ for(i = 0; i < VP_REG_SIZE; i += 8) {
+ val = readl(par->vid_regs + i);
+ printk("VP%x: %x\n", i, val);
+ }
+ }
+
+ if (mode == 3) {
+ for(i = 0; i < FP_REG_SIZE; i += 8) {
+ val = readl(par->vid_regs + 0x400 + i);
+ printk("FP%x: %x\n", i, val);
+ }
+ }
+}
+
+#endif
diff -purN linux_2.6.24_org/drivers/video/geode/video_gx.c linux_2.6.24_olpc/drivers/video/geode/video_gx.c
--- linux_2.6.24_org/drivers/video/geode/video_gx.c 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/video_gx.c 2008-02-15 18:58:41.000000000 +0000
@@ -16,10 +16,14 @@
#include <asm/io.h>
#include <asm/delay.h>
#include <asm/msr.h>
+#include <asm/olpc.h>
#include "geodefb.h"
#include "video_gx.h"
+#include "display_gx.h"
+/* This structure is used to store the saved registers during suspend */
+static struct geoderegs gx_saved_regs;
/*
* Tables of register settings for various DOTCLKs.
@@ -58,7 +62,7 @@ static const struct gx_pll_entry gx_pll_
{ 13888, POSTDIV3, 0x000007E1 }, /* 72.0000 */
{ 13426, PREMULT2, 0x00000F4A }, /* 74.4810 */
{ 13333, 0, 0x00000052 }, /* 75.0000 */
- { 12698, 0, 0x00000056 }, /* 78.7500 */
+ { 12698, 0, 0x00000056 }, /* 78.7500 */
{ 12500, POSTDIV3|PREMULT2, 0x00000709 }, /* 80.0000 */
{ 11135, PREMULT2, 0x00000262 }, /* 89.8000 */
{ 10582, 0, 0x000002D2 }, /* 94.5000 */
@@ -117,8 +121,9 @@ static const struct gx_pll_entry gx_pll_
{ 4357, 0, 0x0000057D }, /* 229.5000 */
};
-static void gx_set_dclk_frequency(struct fb_info *info)
+void gx_set_dclk_frequency(struct fb_info *info)
{
+ struct geodefb_par *par = info->par;
const struct gx_pll_entry *pll_table;
int pll_table_len;
int i, best_i;
@@ -173,115 +178,169 @@ static void gx_set_dclk_frequency(struct
do {
rdmsrl(MSR_GLCP_DOTPLL, dotpll);
} while (timeout-- && !(dotpll & MSR_GLCP_DOTPLL_LOCK));
+
+ par->curdclk = pll_table[best_i].dotpll_value;
}
-static void
-gx_configure_tft(struct fb_info *info)
+/* Find out the current clock - we will use this information to avoid
+ re-programming it if we don't need to */
+
+unsigned int gx_get_dclk(struct fb_info *info)
{
- struct geodefb_par *par = info->par;
- unsigned long val;
- unsigned long fp;
+ const struct gx_pll_entry *pll_table;
+ int pll_table_len;
+ u64 dotpll;
+ int i;
- /* Set up the DF pad select MSR */
+ if (cpu_data(0).x86_mask == 1) {
+ pll_table = gx_pll_table_14MHz;
+ pll_table_len = ARRAY_SIZE(gx_pll_table_14MHz);
+ } else {
+ pll_table = gx_pll_table_48MHz;
+ pll_table_len = ARRAY_SIZE(gx_pll_table_48MHz);
+ }
- rdmsrl(GX_VP_MSR_PAD_SELECT, val);
- val &= ~GX_VP_PAD_SELECT_MASK;
- val |= GX_VP_PAD_SELECT_TFT;
- wrmsrl(GX_VP_MSR_PAD_SELECT, val);
+ rdmsrl(MSR_GLCP_DOTPLL, dotpll);
- /* Turn off the panel */
+ for(i = 0; i < pll_table_len; i++) {
+ if (pll_table[i].dotpll_value == (u32) (dotpll >> 32))
+ break;
+ }
+
+ return (i == pll_table_len) ? 0 : pll_table[i].pixclock;
+}
- fp = readl(par->vid_regs + GX_FP_PM);
- fp &= ~GX_FP_PM_P;
- writel(fp, par->vid_regs + GX_FP_PM);
- /* Set timing 1 */
+#define CMP(val, mask, res) (((val) & (mask)) == (res))
- fp = readl(par->vid_regs + GX_FP_PT1);
- fp &= GX_FP_PT1_VSIZE_MASK;
- fp |= info->var.yres << GX_FP_PT1_VSIZE_SHIFT;
- writel(fp, par->vid_regs + GX_FP_PT1);
+static void
+gx_configure_tft(struct fb_info *info) {
- /* Timing 2 */
- /* Set bits that are always on for TFT */
+ struct geodefb_par *par = info->par;
+ u32 val, fp = 0, fp1, fp2, sync = 0;
- fp = 0x0F100000;
+ /* Set up the DF pad select MSR */
- /* Add sync polarity */
+ rdmsrl(GX_VP_MSR_PAD_SELECT, val);
+
+ if ((val & GX_VP_PAD_SELECT_MASK) != GX_VP_PAD_SELECT_TFT) {
+ val &= ~GX_VP_PAD_SELECT_MASK;
+ val |= GX_VP_PAD_SELECT_TFT;
+ wrmsrl(GX_VP_MSR_PAD_SELECT, val);
+ }
if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
- fp |= GX_FP_PT2_VSP;
+ sync |= GX_FP_PT2_VSP;
if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
- fp |= GX_FP_PT2_HSP;
+ sync |= GX_FP_PT2_HSP;
- writel(fp, par->vid_regs + GX_FP_PT2);
+ /* We only need to turn off the panel if something changed */
- /* Set the dither control */
- writel(0x70, par->vid_regs + GX_FP_DFC);
+ fp1 = readl(par->vid_regs + GX_FP_PT1);
+ fp2 = readl(par->vid_regs + GX_FP_PT2);
+
+ if (!CMP(fp1, GX_FP_PT1_VSIZE_MASK, info->var.yres << GX_FP_PT1_VSIZE_SHIFT) ||
+ (fp2 != (0x0F100000 | sync))) {
+
+ /* Turn off the panel */
+
+#ifdef NOTUSED
+ /* Do we really need to turn off the panel? */
+ /* Possibly - we have a glitch somewhere */
- /* Enable the FP data and power (in case the BIOS didn't) */
+ fp = readl(par->vid_regs + GX_FP_PM);
+ fp &= ~GX_FP_PM_P;
+ writel(fp, par->vid_regs + GX_FP_PM);
+#endif
- fp = readl(par->vid_regs + GX_DCFG);
- fp |= GX_DCFG_FP_PWR_EN | GX_DCFG_FP_DATA_EN;
- writel(fp, par->vid_regs + GX_DCFG);
+ /* Timing 1 */
+ fp1 &= GX_FP_PT1_VSIZE_MASK;
+ fp1 |= info->var.yres << GX_FP_PT1_VSIZE_SHIFT;
+ writel(fp, par->vid_regs + GX_FP_PT1);
- /* Unblank the panel */
+ /* Timing 2 */
+ writel(0x0F100000 | sync, par->vid_regs + GX_FP_PT2);
+ }
+
+ /* Set the dither control */
+ if (readl(par->vid_regs + GX_FP_DFC) != 0x70) {
+ writel(0x70, par->vid_regs + GX_FP_DFC);
+ }
+
+ /* Turn on the panel */
fp = readl(par->vid_regs + GX_FP_PM);
- fp |= GX_FP_PM_P;
- writel(fp, par->vid_regs + GX_FP_PM);
+
+ if (!(fp & 0x09))
+ writel(fp | GX_FP_PM_P, par->vid_regs + GX_FP_PM);
}
+#define DCFG_DEFAULT_VAL GX_DCFG_CRT_SYNC_SKW_DFLT | GX_DCFG_HSYNC_EN | GX_DCFG_VSYNC_EN | \
+GX_DCFG_CRT_EN | GX_DCFG_DAC_BL_EN
+
static void gx_configure_display(struct fb_info *info)
{
struct geodefb_par *par = info->par;
- u32 dcfg, misc;
+ u32 dcfg, misc, sync = 0;
/* Set up the MISC register */
-
misc = readl(par->vid_regs + GX_MISC);
- /* Power up the DAC */
- misc &= ~(GX_MISC_A_PWRDN | GX_MISC_DAC_PWRDN);
+ /* We leave gamma enabled if it was already enabled.
+ Although the hardware enables it without setting
+ up the gamma table, the BIOS or bootloader ought
+ to have either disabled it or loaded a table by now */
- /* Disable gamma correction */
- misc |= GX_MISC_GAM_EN;
- writel(misc, par->vid_regs + GX_MISC);
- /* Write the display configuration */
- dcfg = readl(par->vid_regs + GX_DCFG);
+ if (par->enable_crt) {
+ /* Power up the CRT DACs */
+ if (misc & ( GX_MISC_A_PWRDN | GX_MISC_DAC_PWRDN)) {
+ misc &= ~(GX_MISC_A_PWRDN | GX_MISC_DAC_PWRDN);
+ writel(misc, par->vid_regs + GX_MISC);
+ }
- /* Disable hsync and vsync */
- dcfg &= ~(GX_DCFG_VSYNC_EN | GX_DCFG_HSYNC_EN);
- writel(dcfg, par->vid_regs + GX_DCFG);
+ if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
+ sync |= GX_DCFG_CRT_HSYNC_POL;
- /* Clear bits from existing mode. */
- dcfg &= ~(GX_DCFG_CRT_SYNC_SKW_MASK
- | GX_DCFG_CRT_HSYNC_POL | GX_DCFG_CRT_VSYNC_POL
- | GX_DCFG_VSYNC_EN | GX_DCFG_HSYNC_EN);
+ if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
+ sync |= GX_DCFG_CRT_VSYNC_POL;
+ }
+ else {
+ /* Turn off the CRT DACs in FP mode - we don't need them */
+ if ((misc & (GX_MISC_A_PWRDN | GX_MISC_DAC_PWRDN))) {
+ misc |= (GX_MISC_A_PWRDN | GX_MISC_DAC_PWRDN);
+ writel(misc, par->vid_regs + GX_MISC);
+ }
+ }
- /* Set default sync skew. */
- dcfg |= GX_DCFG_CRT_SYNC_SKW_DFLT;
+ /* Write the display configuration */
+ dcfg = readl(par->vid_regs + GX_DCFG);
- /* Enable hsync and vsync. */
- dcfg |= GX_DCFG_HSYNC_EN | GX_DCFG_VSYNC_EN;
+ if (!CMP(dcfg, DCFG_DEFAULT_VAL | GX_DCFG_CRT_HSYNC_POL | GX_DCFG_CRT_VSYNC_POL,
+ DCFG_DEFAULT_VAL | sync)) {
- /* Sync polarities. */
- if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
- dcfg |= GX_DCFG_CRT_HSYNC_POL;
- if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
- dcfg |= GX_DCFG_CRT_VSYNC_POL;
+ /* Disable hsync and vsync */
+ dcfg &= ~(GX_DCFG_VSYNC_EN | GX_DCFG_HSYNC_EN);
+ writel(dcfg, par->vid_regs + GX_DCFG);
- /* Enable the display logic */
- /* Set up the DACS to blank normally */
+ /* Clear bits from existing mode. */
+ dcfg &= ~(GX_DCFG_CRT_SYNC_SKW_MASK
+ | GX_DCFG_CRT_HSYNC_POL | GX_DCFG_CRT_VSYNC_POL
+ | GX_DCFG_VSYNC_EN | GX_DCFG_HSYNC_EN);
- dcfg |= GX_DCFG_CRT_EN | GX_DCFG_DAC_BL_EN;
+ /* Set default sync skew. */
+ dcfg |= GX_DCFG_CRT_SYNC_SKW_DFLT;
- /* Enable the external DAC VREF? */
+ /* Enable hsync and vsync. */
+ dcfg |= GX_DCFG_HSYNC_EN | GX_DCFG_VSYNC_EN;
- writel(dcfg, par->vid_regs + GX_DCFG);
+ /* Enable the display logic */
+ dcfg |= GX_DCFG_CRT_EN | GX_DCFG_DAC_BL_EN;
+
+ writel(dcfg, par->vid_regs + GX_DCFG);
+ }
/* Set up the flat panel (if it is enabled) */
@@ -289,6 +348,100 @@ static void gx_configure_display(struct
gx_configure_tft(info);
}
+int gxfb_powerdown(struct fb_info *info)
+{
+ struct geodefb_par *par = info->par;
+
+ /* We're already suspended */
+
+ if (par->state != FB_POWER_STATE_ON)
+ return 0;
+
+ /* Save the registers */
+ gx_save_regs(info, &gx_saved_regs);
+
+ /* Shut down the engine */
+
+ writel(gx_saved_regs.vp.r.vcfg & ~0x01, par->vid_regs + GX_VCFG);
+ writel(gx_saved_regs.vp.r.dcfg & ~0x0F, par->vid_regs + GX_DCFG);
+
+ /* Turn off the flat panel unless we are attached to a DCON */
+ if (!olpc_has_dcon())
+ writel(gx_saved_regs.fp.r.pm & ~GX_FP_PM_P, par->vid_regs + GX_FP_PM);
+
+ writel(0x4758, par->dc_regs + DC_UNLOCK);
+
+ writel(gx_saved_regs.dc.r.gcfg & ~0x0F,
+ par->dc_regs + DC_GENERAL_CFG);
+
+ writel(gx_saved_regs.dc.r.dcfg & ~0x19,
+ par->dc_regs + DC_DISPLAY_CFG);
+
+ par->state = FB_POWER_STATE_SUSPEND;
+
+ return 0;
+}
+
+int gxfb_powerup(struct fb_info *info)
+{
+ struct geodefb_par *par = info->par;
+ u32 val;
+
+ if (par->state == FB_POWER_STATE_SUSPEND) {
+
+ writel(gx_saved_regs.dc.r.dcfg,
+ par->dc_regs + DC_DISPLAY_CFG);
+
+ writel(gx_saved_regs.vp.r.vcfg, par->vid_regs + GX_VCFG);
+ writel(gx_saved_regs.vp.r.dcfg, par->vid_regs + GX_DCFG);
+
+ val = readl(par->vid_regs + GX_FP_PM);
+
+ /* power up the panel if it needs it; we don't always power it down */
+ if (!(val & 0x09)) {
+ writel(gx_saved_regs.fp.r.pm, par->vid_regs + GX_FP_PM);
+ mdelay(64);
+ }
+ }
+
+ /* If the panel is currently on its way up, then wait up to 100ms
+ for it */
+
+ if (readl(par->vid_regs + GX_FP_PM) & 0x08) {
+ int i;
+
+ for(i = 0; i < 10; i++) {
+ if (readl(par->vid_regs + GX_FP_PM) & 0x01)
+ break;
+
+ mdelay(10);
+ }
+
+ if (i == 10)
+ printk(KERN_ERR "gxfb: Panel power up timed out\n");
+ }
+
+ if (par->state == FB_POWER_STATE_ON)
+ return 0;
+
+ switch(par->state) {
+ case FB_POWER_STATE_OFF:
+ gx_restore_regs(info, &gx_saved_regs);
+ break;
+
+ case FB_POWER_STATE_SUSPEND:
+ /* Do this because it will turn on the FIFO which will
+ start the line count */
+ writel(gx_saved_regs.dc.r.gcfg,
+ par->dc_regs + DC_GENERAL_CFG);
+ writel(0x0, par->dc_regs + DC_UNLOCK);
+ break;
+ }
+
+ par->state = FB_POWER_STATE_ON;
+ return 0;
+}
+
static int gx_blank_display(struct fb_info *info, int blank_mode)
{
struct geodefb_par *par = info->par;
@@ -315,6 +468,7 @@ static int gx_blank_display(struct fb_in
default:
return -EINVAL;
}
+
dcfg = readl(par->vid_regs + GX_DCFG);
dcfg &= ~(GX_DCFG_DAC_BL_EN
| GX_DCFG_HSYNC_EN | GX_DCFG_VSYNC_EN);
@@ -326,7 +480,7 @@ static int gx_blank_display(struct fb_in
dcfg |= GX_DCFG_VSYNC_EN;
writel(dcfg, par->vid_regs + GX_DCFG);
- /* Power on/off flat panel. */
+ /* Power on/off flat panel */
if (par->enable_crt == 0) {
fp_pm = readl(par->vid_regs + GX_FP_PM);
@@ -340,8 +494,37 @@ static int gx_blank_display(struct fb_in
return 0;
}
+extern struct fb_info *gxfb_info;
+
+/* This function controls the flatpanel power sequencing - this is used
+ by the OLPC power management engine to enable the FP sequencing much
+ earlier in the resume process
+*/
+
+void gxfb_flatpanel_control(int state)
+{
+ struct geodefb_par *par = gxfb_info->par;
+ u32 val, fp = readl(par->vid_regs + GX_FP_PM);
+ val = fp;
+
+ /* Turn on the panel if it isn't aleady */
+
+ if (state) {
+ if (!(val & 0x01))
+ val |= GX_FP_PM_P;
+ }
+ else {
+ if (!(val & 0x02))
+ val &= ~GX_FP_PM_P;
+ }
+
+ if (val != fp)
+ writel(val, par->vid_regs + GX_FP_PM);
+}
+
struct geode_vid_ops gx_vid_ops = {
.set_dclk = gx_set_dclk_frequency,
+ .get_dclk = gx_get_dclk,
.configure_display = gx_configure_display,
.blank_display = gx_blank_display,
};
diff -purN linux_2.6.24_org/drivers/video/geode/video_gx.h linux_2.6.24_olpc/drivers/video/geode/video_gx.h
--- linux_2.6.24_org/drivers/video/geode/video_gx.h 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/geode/video_gx.h 2008-02-15 18:58:41.000000000 +0000
@@ -11,6 +11,8 @@
#ifndef __VIDEO_GX_H__
#define __VIDEO_GX_H__
+#include "geode_regs.h"
+
extern struct geode_vid_ops gx_vid_ops;
/* GX Flatpanel control MSR */
@@ -20,6 +22,8 @@ extern struct geode_vid_ops gx_vid_ops;
/* Geode GX video processor registers */
+#define GX_VCFG 0x0000
+
#define GX_DCFG 0x0008
# define GX_DCFG_CRT_EN 0x00000001
# define GX_DCFG_HSYNC_EN 0x00000002
@@ -42,6 +46,14 @@ extern struct geode_vid_ops gx_vid_ops;
#define GX_MISC_DAC_PWRDN 0x00000400
#define GX_MISC_A_PWRDN 0x00000800
+/* Gamma correction RAM - address and data registers */
+
+#define GX_GAR 0x038
+#define GX_GDR 0x040
+
+#define GXFB_GAMMA_DWORDS 256 /* number of dwords in the gamma ram */
+#define GXFB_GAMMA_SIZE (GXFB_GAMMA_DWORDS * sizeof(unsigned int))
+
/* Geode GX flat panel display control registers */
#define GX_FP_PT1 0x0400
@@ -69,4 +81,13 @@ extern struct geode_vid_ops gx_vid_ops;
# define MSR_GLCP_DOTPLL_BYPASS (0x0000000000008000ull)
# define MSR_GLCP_DOTPLL_LOCK (0x0000000002000000ull)
+int gxfb_powerdown(struct fb_info *info);
+int gxfb_powerup(struct fb_info *info);
+
+void gx_set_dclk_frequency(struct fb_info *info);
+unsigned int gx_get_dclk(struct fb_info *info);
+
+void gx_save_regs(struct fb_info *info, struct geoderegs *regs);
+void gx_restore_regs(struct fb_info *info, struct geoderegs *regs);
+
#endif /* !__VIDEO_GX_H__ */
diff -purN linux_2.6.24_org/drivers/video/Kconfig linux_2.6.24_olpc/drivers/video/Kconfig
--- linux_2.6.24_org/drivers/video/Kconfig 2008-02-15 20:11:22.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/Kconfig 2008-02-15 18:58:36.000000000 +0000
@@ -1869,6 +1869,15 @@ config FB_PS3_DEFAULT_SIZE_M
The default value can be overridden on the kernel command line
using the "ps3fb" option (e.g. "ps3fb=9M");
+config FB_OLPC_DCON
+ tristate "One Laptop Per Child Display CONtroller support"
+ depends on OLPC
+ select I2C
+ ---help---
+ Add support for the OLPC DCON controller. This controller is only
+ available on OLPC platforms. Unless you have one of these
+ platforms, you will want to say 'N'.
+
config FB_XILINX
tristate "Xilinx frame buffer support"
depends on FB && XILINX_VIRTEX
diff -purN linux_2.6.24_org/drivers/video/Makefile linux_2.6.24_olpc/drivers/video/Makefile
--- linux_2.6.24_org/drivers/video/Makefile 2008-02-15 20:11:22.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/Makefile 2008-02-15 18:58:36.000000000 +0000
@@ -111,6 +111,7 @@ obj-$(CONFIG_FB_PNX4008_DUM_RGB) += pnx
obj-$(CONFIG_FB_IBM_GXT4500) += gxt4500.o
obj-$(CONFIG_FB_PS3) += ps3fb.o
obj-$(CONFIG_FB_SM501) += sm501fb.o
+obj-$(CONFIG_FB_OLPC_DCON) += olpc_dcon.o
obj-$(CONFIG_FB_XILINX) += xilinxfb.o
obj-$(CONFIG_FB_OMAP) += omap/
diff -purN linux_2.6.24_org/drivers/video/modedb.c linux_2.6.24_olpc/drivers/video/modedb.c
--- linux_2.6.24_org/drivers/video/modedb.c 2008-02-15 20:11:23.000000000 +0000
+++ linux_2.6.24_olpc/drivers/video/modedb.c 2008-02-15 18:58:41.000000000 +0000
@@ -33,6 +33,8 @@ const char *fb_mode_option;
* Standard video mode definitions (taken from XFree86)
*/
+#define DEFAULT_MODEDB_INDEX 0
+
static const struct fb_videomode modedb[] = {
{
/* 640x400 @ 70 Hz, 31.5 kHz hsync */
@@ -508,7 +510,8 @@ int fb_find_mode(struct fb_var_screeninf
}
if (!default_mode)
- default_mode = &db[0];
+ default_mode = (db == modedb) ?
+ &modedb[DEFAULT_MODEDB_INDEX] : &db[0];
if (!default_bpp)
default_bpp = 8;
diff -purN linux_2.6.24_org/drivers/video/olpc_dcon.c linux_2.6.24_olpc/drivers/video/olpc_dcon.c
--- linux_2.6.24_org/drivers/video/olpc_dcon.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/video/olpc_dcon.c 2008-02-15 18:58:42.000000000 +0000
@@ -0,0 +1,946 @@
+/*
+ * Mainly by David Woodhouse, somewhat modified by Jordan Crouse
+ *
+ * Copyright © 2006-2007 Red Hat, Inc.
+ * Copyright © 2006-2007 Advanced Micro Devices, Inc.
+ *
+ * This program is free software. You can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/fb.h>
+#include <linux/console.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/i2c-id.h>
+#include <linux/pci.h>
+#include <linux/vt_kern.h>
+#include <linux/pci_ids.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/backlight.h>
+#include <linux/device.h>
+#include <linux/notifier.h>
+#include <asm/uaccess.h>
+#include <linux/ctype.h>
+#include <linux/reboot.h>
+#include <asm/tsc.h>
+#include <asm/olpc.h>
+#include <asm/geode.h>
+
+#include "olpc_dcon.h"
+
+/* Module definitions */
+
+static int resumeline = 898;
+module_param(resumeline, int, 0444);
+
+static int noinit;
+module_param(noinit, int, 0444);
+
+/* Default off since it doesn't work on DCON ASIC in B-test OLPC board */
+static int useaa = 1;
+module_param(useaa, int, 0444);
+
+/* I2C structures */
+
+static struct i2c_driver dcon_driver;
+static struct i2c_client *dcon_client;
+
+/* Platform devices */
+static struct platform_device *dcon_device;
+
+/* Backlight device */
+static struct backlight_device *dcon_bl_dev;
+
+/* Base address of the GPIO registers */
+static unsigned long gpio_base;
+
+static struct fb_info *fbinfo;
+
+/* Current source, initialized at probe time */
+static int dcon_source;
+
+/* Desired source */
+static int dcon_pending;
+
+/* Current output type */
+static int dcon_output = DCON_OUTPUT_COLOR;
+
+/* Current sleep status (not yet implemented) */
+static int dcon_sleep_val = DCON_ACTIVE;
+
+/* Shadow register for the DCON_REG_MODE register */
+static unsigned short dcon_disp_mode;
+
+/* Variables used during switches */
+static int dcon_switched;
+
+static DECLARE_WAIT_QUEUE_HEAD(dcon_wait_queue);
+
+static unsigned short normal_i2c[] = { 0x0D, I2C_CLIENT_END };
+I2C_CLIENT_INSMOD;
+
+#define dcon_write(reg,val) i2c_smbus_write_word_data(dcon_client,reg,val)
+#define dcon_read(reg) i2c_smbus_read_word_data(dcon_client,reg)
+
+/* The current backlight value - this saves us some smbus traffic */
+static int bl_val = -1;
+
+/* ===== API functions - these are called by a variety of users ==== */
+
+static int dcon_request_irq(void);
+
+static int dcon_hw_init(struct i2c_client *client, int is_init)
+{
+ uint16_t ver;
+ int rc = 0;
+
+ ver = i2c_smbus_read_word_data(client, DCON_REG_ID);
+ if ((ver >> 8) != 0xDC) {
+ printk(KERN_ERR "olpc-dcon: DCON ID not 0xDCxx: 0x%04x "
+ "instead.\n", ver);
+ rc = -ENXIO;
+ goto err;
+ }
+
+ if (is_init) {
+ printk(KERN_INFO "olpc-dcon: Discovered DCON version %x\n",
+ ver & 0xFF);
+ if ((rc = dcon_request_irq())) {
+ printk(KERN_ERR "olpc-dcon: Unable to grab IRQ.\n");
+ goto err;
+ }
+ }
+
+ if (ver < 0xdc02 && !noinit) {
+ /* Initialize the DCON registers */
+
+ /* Start with work-arounds for DCON ASIC */
+ i2c_smbus_write_word_data(client, 0x4b, 0x00cc);
+ i2c_smbus_write_word_data(client, 0x4b, 0x00cc);
+ i2c_smbus_write_word_data(client, 0x4b, 0x00cc);
+ i2c_smbus_write_word_data(client, 0x0b, 0x007a);
+ i2c_smbus_write_word_data(client, 0x36, 0x025c);
+ i2c_smbus_write_word_data(client, 0x37, 0x025e);
+
+ /* Initialise SDRAM */
+
+ i2c_smbus_write_word_data(client, 0x3b, 0x002b);
+ i2c_smbus_write_word_data(client, 0x41, 0x0101);
+ i2c_smbus_write_word_data(client, 0x42, 0x0101);
+ }
+ else if (!noinit) {
+ /* SDRAM setup/hold time */
+ i2c_smbus_write_word_data(client, 0x3a, 0xc040);
+ i2c_smbus_write_word_data(client, 0x41, 0x0000);
+ i2c_smbus_write_word_data(client, 0x41, 0x0101);
+ i2c_smbus_write_word_data(client, 0x42, 0x0101);
+ }
+
+ /* Colour swizzle, AA, no passthrough, backlight */
+ if (is_init) {
+ dcon_disp_mode = MODE_PASSTHRU | MODE_BL_ENABLE | MODE_CSWIZZLE;
+ if (useaa)
+ dcon_disp_mode |= MODE_COL_AA;
+ }
+ i2c_smbus_write_word_data(client, DCON_REG_MODE, dcon_disp_mode);
+
+
+ /* Set the scanline to interrupt on during resume */
+
+ i2c_smbus_write_word_data(client, DCON_REG_SCAN_INT, resumeline);
+
+err:
+ return rc;
+}
+
+/*
+ * The smbus doesn't always come back due to what is believed to be
+ * hardware (power rail) bugs. For older models where this is known to
+ * occur, our solution is to attempt to wait for the bus to stabilize;
+ * if it doesn't happen, cut power to the dcon, repower it, and wait
+ * for the bus to stabilize. Rinse, repeat until we have a working
+ * smbus. For newer models, we simply BUG(); we want to know if this
+ * still happens despite the power fixes that have been made!
+ */
+static int dcon_bus_stabilize(struct i2c_client *client, int is_powered_down)
+{
+ unsigned long timeout;
+ int x;
+
+power_up:
+ if (is_powered_down) {
+ x = 1;
+ if ((x = olpc_ec_cmd(0x26, (unsigned char *) &x, 1, NULL, 0))) {
+ printk(KERN_WARNING "olpc-dcon: unable to force dcon "
+ "to power up: %d!\n", x);
+ return x;
+ }
+ msleep(10); /* we'll be conservative */
+ }
+
+ /*
+ * According to HiMax, when powering the DCON up we should hold
+ * SMB_DATA high for 8 SMB_CLK cycles. This will force the DCON
+ * state machine to reset to a (sane) initial state. Mitch Bradley
+ * did some testing and discovered that holding for 16 SMB_CLK cycles
+ * worked a lot more reliably, so that's what we do here.
+ *
+ * According to the cs5536 spec, to set GPIO14 to SMB_CLK we must
+ * simultaneously set AUX1 IN/OUT to GPIO14; ditto for SMB_DATA and
+ * GPIO15.
+ */
+ geode_gpio_set(OLPC_GPIO_SMB_CLK|OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_VAL);
+ geode_gpio_set(OLPC_GPIO_SMB_CLK|OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_ENABLE);
+ geode_gpio_clear(OLPC_GPIO_SMB_CLK|OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_AUX1);
+ geode_gpio_clear(OLPC_GPIO_SMB_CLK|OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_AUX2);
+ geode_gpio_clear(OLPC_GPIO_SMB_CLK|OLPC_GPIO_SMB_DATA, GPIO_INPUT_AUX1);
+
+ for (x = 0; x < 16; x++) {
+ udelay(5);
+ geode_gpio_clear(OLPC_GPIO_SMB_CLK, GPIO_OUTPUT_VAL);
+ udelay(5);
+ geode_gpio_set(OLPC_GPIO_SMB_CLK, GPIO_OUTPUT_VAL);
+ }
+ udelay(5);
+ geode_gpio_set(OLPC_GPIO_SMB_CLK|OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_AUX1);
+ geode_gpio_set(OLPC_GPIO_SMB_CLK|OLPC_GPIO_SMB_DATA, GPIO_INPUT_AUX1);
+
+ for (x = -1, timeout = 50; timeout && x < 0; timeout--) {
+ msleep(1);
+ x = dcon_read(DCON_REG_ID);
+ }
+ if (x < 0) {
+ printk(KERN_ERR "olpc-dcon: unable to stabilize dcon's "
+ "smbus, reasserting power and praying.\n");
+ BUG_ON(olpc_board_at_least(olpc_board(0xc2)));
+ x = 0;
+ olpc_ec_cmd(0x26, (unsigned char *) &x, 1, NULL, 0);
+ msleep(100);
+ is_powered_down = 1;
+ goto power_up; /* argh, stupid hardware.. */
+ }
+
+ if (is_powered_down)
+ return dcon_hw_init(client, 0);
+ return 0;
+}
+
+
+/* Backlight notes - turning off the backlight enable bit in the DCON
+ * doesn't save us any power over just pushing the BL to zero, so we
+ * don't use that bit in this code.
+ */
+
+static int dcon_get_backlight(void)
+{
+ if (dcon_client == NULL)
+ return 0;
+
+ if (bl_val == -1)
+ bl_val = dcon_read(DCON_REG_BRIGHT) & 0x0F;
+
+ return bl_val;
+}
+
+static void dcon_set_backlight(int level)
+{
+ if (dcon_client == NULL)
+ return;
+
+ if (bl_val == (level & 0x0F))
+ return;
+
+ bl_val = level & 0x0F;
+ dcon_write(DCON_REG_BRIGHT, bl_val);
+
+ /* Purposely turn off the backlight when we go to level 0 */
+
+ if (bl_val == 0) {
+ dcon_disp_mode &= ~MODE_BL_ENABLE;
+ dcon_write(DCON_REG_MODE, dcon_disp_mode);
+ }
+ else if (!(dcon_disp_mode & MODE_BL_ENABLE)) {
+ dcon_disp_mode |= MODE_BL_ENABLE;
+ dcon_write(DCON_REG_MODE, dcon_disp_mode);
+ }
+}
+
+/* Set the output type to either color or mono */
+
+static int dcon_set_output(int arg)
+{
+ if (dcon_output == arg)
+ return 0;
+
+ dcon_output = arg;
+
+ if (arg == DCON_OUTPUT_MONO) {
+ dcon_disp_mode &= ~(MODE_CSWIZZLE | MODE_COL_AA);
+ dcon_disp_mode |= MODE_MONO_LUMA;
+ }
+ else {
+ dcon_disp_mode &= ~(MODE_MONO_LUMA);
+ dcon_disp_mode |= MODE_CSWIZZLE;
+ if (useaa)
+ dcon_disp_mode |= MODE_COL_AA;
+ }
+
+ dcon_write(DCON_REG_MODE, dcon_disp_mode);
+ return 0;
+}
+
+/* For now, this will be really stupid - we need to address how
+ * DCONLOAD works in a sleep and account for it accordingly
+ */
+
+static void dcon_sleep(int state)
+{
+ int x;
+
+ /* Turn off the backlight and put the DCON to sleep */
+
+ if (state == dcon_sleep_val)
+ return;
+
+ if (!olpc_board_at_least(olpc_board(0xc2)))
+ return;
+
+ if (state == DCON_SLEEP) {
+ x = 0;
+ if ((x = olpc_ec_cmd(0x26, (unsigned char *) &x, 1, NULL, 0)))
+ printk(KERN_WARNING "olpc-dcon: unable to force dcon "
+ "to power down: %d!\n", x);
+ else
+ dcon_sleep_val = state;
+ }
+ else {
+ /* Only re-enable the backlight if the backlight value is set */
+ if (bl_val != 0)
+ dcon_disp_mode |= MODE_BL_ENABLE;
+
+ if ((x=dcon_bus_stabilize(dcon_client, 1)))
+ printk(KERN_WARNING "olpc-dcon: unable to reinit dcon"
+ " hardware: %d!\n", x);
+ else
+ dcon_sleep_val = state;
+ }
+
+ /* We should turn off some stuff in the framebuffer - but what? */
+}
+
+/* Set the source of the display (CPU or DCON) */
+
+static void dcon_source_switch(struct work_struct *work)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ int source = dcon_pending;
+
+ if (dcon_source == source)
+ return;
+
+ dcon_switched = 0;
+
+ switch (source) {
+ case DCON_SOURCE_CPU:
+
+ /* Enable the scanline interrupt bit */
+ if (dcon_write(DCON_REG_MODE, dcon_disp_mode | MODE_SCAN_INT))
+ printk(KERN_ERR "olpc-dcon: couldn't enable scanline interrupt!\n");
+ else {
+ /* Wait up to one second for the scanline interrupt */
+ wait_event_timeout(dcon_wait_queue, dcon_switched == 1, HZ);
+ }
+
+ if (!dcon_switched)
+ printk(KERN_ERR "olpc-dcon: Timeout entering CPU mode; expect a screen glitch.\n");
+
+ /*
+ * Ideally we'd like to disable interrupts here so that the
+ * fb unblanking and DCON turn on happen at a known time value;
+ * however, we can't do that right now with fb_blank
+ * messing with semaphores.
+ *
+ * For now, we just hope..
+ */
+ acquire_console_sem();
+ if (fb_blank(fbinfo, FB_BLANK_UNBLANK)) {
+ release_console_sem();
+ printk(KERN_ERR "olpc-dcon: Failed to enter CPU mode\n");
+ dcon_pending = DCON_SOURCE_DCON;
+ return;
+ }
+ release_console_sem();
+
+ /* And turn off the DCON */
+ outl(1<<11, gpio_base + GPIOx_OUT_VAL);
+
+ /* Turn off the scanline interrupt */
+ if (dcon_write(DCON_REG_MODE, dcon_disp_mode))
+ printk(KERN_ERR "olpc-dcon: couldn't disable scanline interrupt!\n");
+
+ printk(KERN_INFO "olpc-dcon: The CPU has control\n");
+ break;
+ case DCON_SOURCE_DCON:
+ {
+ int t;
+
+ add_wait_queue(&dcon_wait_queue, &wait);
+ set_current_state(TASK_UNINTERRUPTIBLE);
+
+ /* Clear GPIO11 (DCONLOAD) - this implies that the DCON is in
+ control */
+
+ outl(1 << (11 + 16), gpio_base + GPIOx_OUT_VAL);
+
+ t = schedule_timeout(HZ/2);
+ remove_wait_queue(&dcon_wait_queue, &wait);
+ set_current_state(TASK_RUNNING);
+
+ if (!dcon_switched)
+ printk(KERN_ERR "olpc-dcon: Timeout entering DCON mode; expect a screen glitch.\n");
+
+ acquire_console_sem();
+ if (fb_blank(fbinfo, FB_BLANK_POWERDOWN))
+ printk(KERN_ERR "olpc-dcon: couldn't blank fb!\n");
+ release_console_sem();
+
+ printk(KERN_INFO "olpc-dcon: The DCON has control\n");
+ break;
+ }
+ default:
+ BUG();
+ }
+
+ dcon_source = source;
+}
+
+static DECLARE_WORK(dcon_work, dcon_source_switch);
+
+static int dcon_set_source(int arg)
+{
+ if (arg != DCON_SOURCE_CPU && arg != DCON_SOURCE_DCON)
+ return -EINVAL;
+
+ if (dcon_pending == arg)
+ return 0;
+
+ dcon_pending = arg;
+ if ((dcon_source != arg) && !work_pending(&dcon_work))
+ schedule_work(&dcon_work);
+
+ return 0;
+}
+
+static int dcon_set_source_sync(int arg)
+{
+ int ret = dcon_set_source(arg);
+ if (!ret)
+ flush_scheduled_work();
+ return ret;
+}
+
+static int dconbl_set(struct backlight_device *dev) {
+
+ int level = dev->props.brightness;
+
+ if (dev->props.power != FB_BLANK_UNBLANK)
+ level = 0;
+
+ dcon_set_backlight(level);
+ return 0;
+}
+
+static int dconbl_get(struct backlight_device *dev) {
+ return dcon_get_backlight();
+}
+
+static ssize_t dcon_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%4.4X\n", dcon_disp_mode);
+}
+
+static ssize_t dcon_sleep_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", dcon_sleep_val);
+}
+
+static ssize_t /* __deprecated */ dcon_source_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ printk(KERN_WARNING "olpc-dcon: using deprecated sysfs 'source' interface; use 'freeze' instead!\n");
+ return sprintf(buf, "%d\n", dcon_source);
+}
+
+static ssize_t dcon_freeze_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", dcon_source == DCON_SOURCE_DCON ? 1 : 0);
+}
+
+static ssize_t dcon_output_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", dcon_output);
+}
+
+static ssize_t dcon_resumeline_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", resumeline);
+}
+
+static int _strtoul(const char *buf, int len, unsigned int *val)
+{
+
+ char *endp;
+ unsigned int output = simple_strtoul(buf, &endp, 0);
+ int size = endp - buf;
+
+ if (*endp && isspace(*endp))
+ size++;
+
+ if (size != len)
+ return -EINVAL;
+
+ *val = output;
+ return 0;
+}
+
+static ssize_t dcon_output_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int output;
+ int rc = -EINVAL;
+
+ if (_strtoul(buf, count, &output))
+ return -EINVAL;
+
+ if (output == DCON_OUTPUT_COLOR || output == DCON_OUTPUT_MONO) {
+ dcon_set_output(output);
+ rc = count;
+ }
+
+ return rc;
+}
+
+static ssize_t /* __deprecated */ dcon_source_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int output;
+ int rc = -EINVAL;
+
+ printk(KERN_WARNING "olpc-dcon: using deprecated sysfs 'source' interface; use 'freeze' instead!\n");
+ if (_strtoul(buf, count, &output))
+ return -EINVAL;
+
+ dcon_set_source(output);
+ rc = count;
+
+ return rc;
+}
+
+static ssize_t dcon_freeze_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int output;
+ int rc = -EINVAL;
+
+ if (_strtoul(buf, count, &output))
+ return rc;
+
+ dcon_set_source(output ? DCON_SOURCE_DCON : DCON_SOURCE_CPU);
+ rc = count;
+
+ return rc;
+}
+
+static ssize_t dcon_resumeline_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int rl;
+ int rc = -EINVAL;
+
+ if (_strtoul(buf, count, &rl))
+ return rc;
+
+ resumeline = rl;
+ dcon_write(DCON_REG_SCAN_INT, resumeline);
+ rc = count;
+
+ return rc;
+}
+
+static ssize_t dcon_sleep_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int output;
+
+ if (_strtoul(buf, count, &output))
+ return -EINVAL;
+
+ dcon_sleep(output ? DCON_SLEEP : DCON_ACTIVE);
+ return count;
+}
+
+static struct device_attribute dcon_device_files[] = {
+ __ATTR(mode, 0444, dcon_mode_show, NULL),
+ __ATTR(sleep, 0644, dcon_sleep_show, dcon_sleep_store),
+ __ATTR(source, 0644, dcon_source_show, dcon_source_store),
+ __ATTR(freeze, 0644, dcon_freeze_show, dcon_freeze_store),
+ __ATTR(output, 0644, dcon_output_show, dcon_output_store),
+ __ATTR(resumeline, 0644, dcon_resumeline_show, dcon_resumeline_store),
+};
+
+static struct backlight_ops dcon_bl_ops = {
+ .get_brightness = dconbl_get,
+ .update_status = dconbl_set
+};
+
+/* List of GPIOs that we care about:
+ (in) GPIO12 -- DCONBLNK
+ (in) GPIO[56] -- DCONSTAT[01]
+ (out) GPIO11 -- DCONLOAD
+*/
+
+#define IN_GPIOS ((1<<5) | (1<<6) | (1<<7) | (1<<12))
+#define OUT_GPIOS (1<<11)
+
+static irqreturn_t dcon_interrupt(int, void *);
+
+static int dcon_request_irq(void)
+{
+ unsigned long lo, hi;
+ unsigned char lob;
+
+ rdmsr(MSR_LBAR_GPIO, lo, hi);
+
+ /* Check the mask and whether GPIO is enabled (sanity check) */
+ if (hi != 0x0000f001) {
+ printk(KERN_ERR "GPIO not enabled -- cannot use DCON\n");
+ return -ENODEV;
+ }
+
+ /* Mask off the IO base address */
+ gpio_base = lo & 0x0000ff00;
+
+ /* Turn off the event enable for GPIO7 just to be safe */
+ outl(1 << (16+7), gpio_base + GPIOx_EVNT_EN);
+
+ /* Set the directions for the GPIO pins */
+ outl(OUT_GPIOS | (IN_GPIOS << 16), gpio_base + GPIOx_OUT_EN);
+ outl(IN_GPIOS | (OUT_GPIOS << 16), gpio_base + GPIOx_IN_EN);
+
+ /* Set up the interrupt mappings */
+
+ /* Set the IRQ to pair 2 */
+ geode_gpio_event_irq(OLPC_GPIO_DCON_IRQ, 2);
+
+ /* Enable group 2 to trigger the DCON interrupt */
+ geode_gpio_set_irq(2, DCON_IRQ);
+
+ /* Select edge level for interrupt (in PIC) */
+
+ lob = inb(0x4d0);
+ lob &= ~(1 << DCON_IRQ);
+ outb(lob, 0x4d0);
+
+ /* Register the interupt handler */
+ if (request_irq(DCON_IRQ, &dcon_interrupt, 0, "DCON", &dcon_driver))
+ return -EIO;
+
+ /* Clear INV_EN for GPIO7 (DCONIRQ) */
+ outl((1<<(16+7)), gpio_base + GPIOx_INV_EN);
+
+ /* Enable filter for GPIO12 (DCONBLANK) */
+ outl(1<<(12), gpio_base + GPIOx_IN_FLTR_EN);
+
+ /* Disable filter for GPIO7 */
+ outl(1<<(16+7), gpio_base + GPIOx_IN_FLTR_EN);
+
+ /* Disable event counter for GPIO7 (DCONIRQ) and GPIO12 (DCONBLANK) */
+
+ outl(1<<(16+7), gpio_base + GPIOx_EVNTCNT_EN);
+ outl(1<<(16+12), gpio_base + GPIOx_EVNTCNT_EN);
+
+ /* Add GPIO12 to the Filter Event Pair #7 */
+ outb(12, gpio_base + GPIO_FE7_SEL);
+
+ /* Turn off negative Edge Enable for GPIO12 */
+ outl(1<<(16+12), gpio_base + GPIOx_NEGEDGE_EN);
+
+ /* Enable negative Edge Enable for GPIO7 */
+ outl(1<<7, gpio_base + GPIOx_NEGEDGE_EN);
+
+ /* Zero the filter amount for Filter Event Pair #7 */
+ outw(0, gpio_base + GPIO_FLT7_AMNT);
+
+ /* Clear the negative edge status for GPIO7 and GPIO12 */
+ outl((1<<7) | (1<<12), gpio_base+0x4c);
+
+ /* FIXME: Clear the posiitive status as well, just to be sure */
+ outl((1<<7) | (1<<12), gpio_base+0x48);
+
+ /* Enable events for GPIO7 (DCONIRQ) and GPIO12 (DCONBLANK) */
+ outl((1<<(7))|(1<<12), gpio_base + GPIOx_EVNT_EN);
+
+ /* Determine the current state by reading the GPIO bit */
+ /* Earlier stages of the boot process have established the state */
+ dcon_source = inl(gpio_base + GPIOx_OUT_VAL) & (1<<11)
+ ? DCON_SOURCE_CPU
+ : DCON_SOURCE_DCON;
+ dcon_pending = dcon_source;
+
+ return 0;
+}
+
+static int dcon_reboot_notify(struct notifier_block *nb, unsigned long foo, void *bar)
+{
+ if (dcon_client == NULL)
+ return 0;
+
+ /* Turn off the DCON. Entirely. */
+ dcon_write(DCON_REG_MODE, 0x39);
+ dcon_write(DCON_REG_MODE, 0x32);
+ return 0;
+}
+
+static int dcon_conswitch_notify(struct notifier_block *nb,
+ unsigned long mode, void *dummy)
+{
+ if (mode == CONSOLE_EVENT_SWITCH_TEXT)
+ dcon_sleep(DCON_ACTIVE);
+
+ return 0;
+}
+
+static struct notifier_block dcon_nb = {
+ .notifier_call = dcon_reboot_notify,
+ .priority = -1,
+};
+
+static struct notifier_block dcon_console_nb = {
+ .notifier_call = dcon_conswitch_notify,
+ .priority = -1,
+};
+
+static int unfreeze_on_panic(struct notifier_block *nb, unsigned long e, void *p)
+{
+ outl(1<<11, gpio_base + GPIOx_OUT_VAL);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block dcon_panic_nb = {
+ .notifier_call = unfreeze_on_panic,
+};
+
+static int dcon_probe(struct i2c_adapter *adap, int addr, int kind)
+{
+ struct i2c_client *client;
+ int rc, i;
+
+ if (!olpc_has_dcon()) {
+ printk("olpc-dcon: No DCON is attached.\n");
+ return -ENODEV;
+ }
+
+ if (num_registered_fb >= 1)
+ fbinfo = registered_fb[0];
+
+ if (adap->id != I2C_HW_SMBUS_SCX200) {
+ printk(KERN_ERR "olpc-dcon: Invalid I2C bus (%d not %d)\n",
+ adap->id, I2C_HW_SMBUS_SCX200);
+ return -ENXIO;
+ }
+
+ client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ if (client == NULL)
+ return -ENOMEM;
+
+ strncpy(client->name, "OLPC-DCON", I2C_NAME_SIZE);
+ client->addr = addr;
+ client->adapter = adap;
+ client->driver = &dcon_driver;
+
+ if ((rc = i2c_attach_client(client)) != 0) {
+ printk(KERN_ERR "olpc-dcon: Unable to attach the I2C client.\n");
+ goto eclient;
+ }
+
+ rc = dcon_hw_init(client, 1);
+ if (rc)
+ goto ei2c;
+
+ /* Add the DCON device */
+
+ dcon_device = platform_device_alloc("dcon", -1);
+
+ if (dcon_device == NULL) {
+ printk(KERN_ERR "dcon: Unable to create the DCON device\n");
+ rc = -ENOMEM;
+ goto eirq;
+ }
+
+ if ((rc = platform_device_add(dcon_device))) {
+ printk(KERN_ERR "dcon: Unable to add the DCON device\n");
+ goto edev;
+ }
+
+ for(i = 0; i < ARRAY_SIZE(dcon_device_files); i++)
+ device_create_file(&dcon_device->dev, &dcon_device_files[i]);
+
+ /* Add the backlight device for the DCON */
+
+ dcon_client = client;
+
+ dcon_bl_dev = backlight_device_register("dcon-bl", &dcon_device->dev,
+ NULL, &dcon_bl_ops);
+
+ if (IS_ERR(dcon_bl_dev)) {
+ printk(KERN_INFO "Could not register the backlight device for the DCON (%ld)\n", PTR_ERR(dcon_bl_dev));
+ dcon_bl_dev = NULL;
+ }
+ else {
+ dcon_bl_dev->props.max_brightness = 15;
+ dcon_bl_dev->props.power = FB_BLANK_UNBLANK;
+ dcon_bl_dev->props.brightness = dcon_get_backlight();
+
+ backlight_update_status(dcon_bl_dev);
+ }
+
+ register_reboot_notifier(&dcon_nb);
+ console_event_register(&dcon_console_nb);
+ atomic_notifier_chain_register(&panic_notifier_list, &dcon_panic_nb);
+
+ return 0;
+
+ edev:
+ platform_device_unregister(dcon_device);
+ dcon_device = NULL;
+ eirq:
+ free_irq(DCON_IRQ, &dcon_driver);
+ ei2c:
+ i2c_detach_client(client);
+ eclient:
+ kfree(client);
+
+ return rc;
+}
+
+static int dcon_attach(struct i2c_adapter *adap)
+{
+ int ret;
+
+ ret = i2c_probe(adap, &addr_data, dcon_probe);
+
+ if (dcon_client == NULL)
+ printk(KERN_ERR "olpc-dcon: No DCON found on SMBus\n");
+
+ return ret;
+}
+
+static int dcon_detach(struct i2c_client *client)
+{
+ int rc;
+ dcon_client = NULL;
+
+ unregister_reboot_notifier(&dcon_nb);
+ console_event_unregister(&dcon_console_nb);
+ atomic_notifier_chain_unregister(&panic_notifier_list, &dcon_panic_nb);
+
+ free_irq(DCON_IRQ, &dcon_driver);
+
+ if ((rc = i2c_detach_client(client)) == 0)
+ kfree(i2c_get_clientdata(client));
+
+ if (dcon_bl_dev != NULL)
+ backlight_device_unregister(dcon_bl_dev);
+
+ if (dcon_device != NULL)
+ platform_device_unregister(dcon_device);
+ cancel_work_sync(&dcon_work);
+
+ return rc;
+}
+
+
+#ifdef CONFIG_PM
+static int dcon_suspend(struct i2c_client *client, pm_message_t state)
+{
+ if (dcon_sleep_val != DCON_ACTIVE)
+ return 0;
+
+ /* Set up the DCON to have the source */
+ return dcon_set_source_sync(DCON_SOURCE_DCON);
+}
+
+static int dcon_resume(struct i2c_client *client)
+{
+ if (dcon_sleep_val != DCON_ACTIVE)
+ return 0;
+
+ dcon_bus_stabilize(client, 0);
+
+ return dcon_set_source(DCON_SOURCE_CPU);
+}
+
+#endif
+
+static irqreturn_t dcon_interrupt(int irq, void *id)
+{
+ int status = inl(gpio_base + GPIOx_READ_BACK) >> 5;
+
+ /* Clear the negative edge status for GPIO7 */
+ outl(1 << 7, gpio_base + GPIOx_NEGEDGE_STS);
+
+ switch (status & 3) {
+ case 3:
+ printk(KERN_DEBUG "olpc-dcon: DCONLOAD_MISSED interrupt\n");
+ break;
+ case 2: /* switch to DCON mode */
+ case 1: /* switch to CPU mode */
+ dcon_switched = 1;
+ wake_up(&dcon_wait_queue);
+ break;
+ case 0:
+ printk(KERN_DEBUG "olpc-dcon: scanline interrupt w/CPU\n");
+ }
+
+ return IRQ_HANDLED;
+}
+
+static struct i2c_driver dcon_driver = {
+ .driver = {
+ .name = "OLPC-DCON",
+ },
+ .id = I2C_DRIVERID_DCON,
+ .attach_adapter = dcon_attach,
+ .detach_client = dcon_detach,
+#ifdef CONFIG_PM
+ .suspend = dcon_suspend,
+ .resume = dcon_resume,
+#endif
+};
+
+
+static int __init olpc_dcon_init(void)
+{
+ i2c_add_driver(&dcon_driver);
+ return 0;
+}
+
+static void __exit olpc_dcon_exit(void)
+{
+ i2c_del_driver(&dcon_driver);
+}
+
+module_init(olpc_dcon_init);
+module_exit(olpc_dcon_exit);
+
+MODULE_LICENSE("GPL");
Binary files linux_2.6.24_org/drivers/video/.olpc_dcon.c.swp and linux_2.6.24_olpc/drivers/video/.olpc_dcon.c.swp differ
diff -purN linux_2.6.24_org/drivers/video/olpc_dcon.h linux_2.6.24_olpc/drivers/video/olpc_dcon.h
--- linux_2.6.24_org/drivers/video/olpc_dcon.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/drivers/video/olpc_dcon.h 2008-02-15 18:58:35.000000000 +0000
@@ -0,0 +1,75 @@
+#ifndef OLPC_DCON_H_
+#define OLPC_DCON_H_
+
+/* DCON registers */
+
+#define DCON_REG_ID 0
+#define DCON_REG_MODE 1
+
+#define MODE_PASSTHRU (1<<0)
+#define MODE_SLEEP (1<<1)
+#define MODE_SLEEP_AUTO (1<<2)
+#define MODE_BL_ENABLE (1<<3)
+#define MODE_BLANK (1<<4)
+#define MODE_CSWIZZLE (1<<5)
+#define MODE_COL_AA (1<<6)
+#define MODE_MONO_LUMA (1<<7)
+#define MODE_SCAN_INT (1<<8)
+#define MODE_CLOCKDIV (1<<9)
+#define MODE_DEBUG (1<<14)
+#define MODE_SELFTEST (1<<15)
+
+#define DCON_REG_HRES 2
+#define DCON_REG_HTOTAL 3
+#define DCON_REG_HSYNC_WIDTH 4
+#define DCON_REG_VRES 5
+#define DCON_REG_VTOTAL 6
+#define DCON_REG_VSYNC_WIDTH 7
+#define DCON_REG_TIMEOUT 8
+#define DCON_REG_SCAN_INT 9
+#define DCON_REG_BRIGHT 10
+
+/* GPIO registers (CS5536) */
+
+#define MSR_LBAR_GPIO 0x5140000C
+
+#define GPIOx_OUT_VAL 0x00
+#define GPIOx_OUT_EN 0x04
+#define GPIOx_IN_EN 0x20
+#define GPIOx_INV_EN 0x24
+#define GPIOx_IN_FLTR_EN 0x28
+#define GPIOx_EVNTCNT_EN 0x2C
+#define GPIOx_READ_BACK 0x30
+#define GPIOx_EVNT_EN 0x38
+#define GPIOx_NEGEDGE_EN 0x44
+#define GPIOx_NEGEDGE_STS 0x4C
+#define GPIO_FLT7_AMNT 0xD8
+#define GPIO_MAP_X 0xE0
+#define GPIO_MAP_Y 0xE4
+#define GPIO_FE7_SEL 0xF7
+
+
+/* Status values */
+
+#define DCONSTAT_SCANINT 0
+#define DCONSTAT_SCANINT_DCON 1
+#define DCONSTAT_DISPLAYLOAD 2
+#define DCONSTAT_MISSED 3
+
+/* Source values */
+
+#define DCON_SOURCE_DCON 0
+#define DCON_SOURCE_CPU 1
+
+/* Output values */
+#define DCON_OUTPUT_COLOR 0
+#define DCON_OUTPUT_MONO 1
+
+/* Sleep values */
+#define DCON_ACTIVE 0
+#define DCON_SLEEP 1
+
+/* Interrupt */
+#define DCON_IRQ 6
+
+#endif
diff -purN linux_2.6.24_org/fs/jffs2/nodelist.h linux_2.6.24_olpc/fs/jffs2/nodelist.h
--- linux_2.6.24_org/fs/jffs2/nodelist.h 2008-02-15 20:10:35.000000000 +0000
+++ linux_2.6.24_olpc/fs/jffs2/nodelist.h 2008-02-15 18:57:39.000000000 +0000
@@ -197,7 +197,7 @@ struct jffs2_inode_cache {
#define RAWNODE_CLASS_XATTR_DATUM 1
#define RAWNODE_CLASS_XATTR_REF 2
-#define INOCACHE_HASHSIZE 128
+#define INOCACHE_HASHSIZE 1024
#define write_ofs(c) ((c)->nextblock->offset + (c)->sector_size - (c)->nextblock->free_size)
diff -purN linux_2.6.24_org/fs/Kconfig linux_2.6.24_olpc/fs/Kconfig
--- linux_2.6.24_org/fs/Kconfig 2008-02-15 20:10:31.000000000 +0000
+++ linux_2.6.24_olpc/fs/Kconfig 2008-02-15 18:57:33.000000000 +0000
@@ -1031,6 +1031,37 @@ config HUGETLBFS
config HUGETLB_PAGE
def_bool HUGETLBFS
+config PROMFS_FS
+ tristate "PromFS IEEE 1275 file system support"
+ depends on SPARC || PPC || OLPC
+ help
+ PromFS is a file system interface to various IEEE-1275 compatible
+ firmwares. If you have such a firmware (Sparc64, PowerPC, and
+ some other architectures and embedded systems have such firmwares,
+ with names like "OpenBoot (tm)" and "OpenFirmware"), say Y here
+ to be able to access the firmware's device-tree from Linux.
+
+ The firmware device-tree is available as a virtual file system,
+ can be mounted under /prom with the command "mount -t promfs
+ none /prom".
+
+ To compile PromFS support as a module, choose M here; the module
+ will be called promfs. If unsure, choose M.
+
+config RAMFS
+ bool
+ default y
+ ---help---
+ Ramfs is a file system which keeps all files in RAM. It allows
+ read and write access.
+
+ It is more of an programming example than a useable file system. If
+ you need a file system which lives in RAM with limit checking use
+ tmpfs.
+
+ To compile this as a module, choose M here: the module will be called
+ ramfs.
+
config CONFIGFS_FS
tristate "Userspace-driven configuration filesystem (EXPERIMENTAL)"
depends on SYSFS && EXPERIMENTAL
diff -purN linux_2.6.24_org/fs/Makefile linux_2.6.24_olpc/fs/Makefile
--- linux_2.6.24_org/fs/Makefile 2008-02-15 20:10:33.000000000 +0000
+++ linux_2.6.24_olpc/fs/Makefile 2008-02-15 18:57:34.000000000 +0000
@@ -110,6 +110,7 @@ obj-$(CONFIG_ADFS_FS) += adfs/
obj-$(CONFIG_FUSE_FS) += fuse/
obj-$(CONFIG_UDF_FS) += udf/
obj-$(CONFIG_SUN_OPENPROMFS) += openpromfs/
+obj-$(CONFIG_PROMFS_FS) += promfs/
obj-$(CONFIG_JFS_FS) += jfs/
obj-$(CONFIG_XFS_FS) += xfs/
obj-$(CONFIG_9P_FS) += 9p/
diff -purN linux_2.6.24_org/fs/promfs/Makefile linux_2.6.24_olpc/fs/promfs/Makefile
--- linux_2.6.24_org/fs/promfs/Makefile 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/fs/promfs/Makefile 2008-02-15 18:57:33.000000000 +0000
@@ -0,0 +1 @@
+obj-$(CONFIG_PROMFS_FS) += promfs.o
diff -purN linux_2.6.24_org/fs/promfs/promfs.c linux_2.6.24_olpc/fs/promfs/promfs.c
--- linux_2.6.24_org/fs/promfs/promfs.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/fs/promfs/promfs.c 2008-02-15 18:57:33.000000000 +0000
@@ -0,0 +1,295 @@
+/*
+ * promfs.c - generic inode/dentry functions for IEEE 1275-based filesystems.
+ *
+ * This is based heavily upon prior ieee1275 and other virtual filesystems
+ * implementations; openpromfs, proc_devtree.c, oprofilefs, procfs, ...
+ *
+ * Copyright (C) 2007 Andres Salomon <dilinger@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/pagemap.h>
+#include <linux/fs.h>
+//#include <linux/promfs.h>
+#include <asm/prom.h>
+
+#define PROMFS_MAGIC 0x1f2f3fff
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Andres Salomon");
+
+struct promfs_inode
+{
+ struct inode ino;
+ struct property *prop;
+};
+
+static inline struct promfs_inode *to_promfs_inode(struct inode *inode)
+{
+ return container_of(inode, struct promfs_inode, ino);
+}
+
+#if 0
+static DEFINE_SPINLOCK(promfs_lock);
+
+static struct of_node *of_tree = NULL;
+static DEFINE_RWLOCK(of_tree_lock);
+
+void __init of_build_tree(void)
+{
+
+
+}
+#endif
+
+static int promfs_open_file(struct inode *inode, struct file *file)
+{
+ struct promfs_inode *ino;
+
+ ino = to_promfs_inode(inode);
+ if (!ino->prop)
+ return -EIO;
+ file->private_data = ino->prop;
+
+ return 0;
+}
+
+static ssize_t promfs_read_file(struct file *file, char __user *data,
+ size_t len, loff_t *ppos)
+{
+ struct property *prop = (struct property *) file->private_data;
+ return simple_read_from_buffer(data, len, ppos, prop->value,
+ prop->length);
+}
+
+static ssize_t promfs_write_file(struct file *file, char const __user *buf,
+ size_t count, loff_t * offset)
+{
+ /* TODO.... 'cause, y'know, it would be nice. */
+ return -EIO;
+}
+
+static struct file_operations promfs_file_ops = {
+ .open = promfs_open_file,
+ .read = promfs_read_file,
+ .write = promfs_write_file,
+};
+
+static struct kmem_cache *promfs_inode_cachep;
+
+static struct inode *promfs_alloc_inode(struct super_block *sb)
+{
+ struct promfs_inode *pr_ino;
+
+ pr_ino = kmem_cache_alloc(promfs_inode_cachep, GFP_KERNEL);
+ if (!pr_ino)
+ return NULL;
+ pr_ino->prop = NULL;
+
+ return &pr_ino->ino;
+}
+
+static void promfs_destroy_inode(struct inode *inode)
+{
+ kmem_cache_free(promfs_inode_cachep, to_promfs_inode(inode));
+}
+
+static void promfs_read_inode(struct inode *inode)
+{
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+}
+
+static int promfs_remount(struct super_block *sb, int *flags, char *data)
+{
+ *flags |= MS_NOATIME;
+ return 0;
+}
+
+static struct super_operations promfs_s_ops = {
+ .alloc_inode = promfs_alloc_inode,
+ .destroy_inode = promfs_destroy_inode,
+ .read_inode = promfs_read_inode,
+ .statfs = simple_statfs,
+ .drop_inode = generic_delete_inode,
+ .remount_fs = promfs_remount,
+};
+
+static struct inode *promfs_get_inode(struct super_block *sb, int mode)
+{
+ struct inode *inode = new_inode(sb);
+
+ if (inode) {
+ inode->i_mode = mode;
+ inode->i_uid = 0;
+ inode->i_gid = 0;
+ inode->i_blocks = 0;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ }
+
+ return inode;
+}
+
+static int promfs_create_file(struct super_block *sb, struct dentry *root,
+ struct property *prop, const struct file_operations *fops)
+{
+ struct dentry *dentry;
+ struct inode *inode;
+ struct promfs_inode *ino;
+
+ dentry = d_alloc_name(root, prop->name);
+ if (!dentry)
+ goto err;
+
+ inode = promfs_get_inode(sb, S_IFREG | 0644);
+ if (!inode)
+ goto err_dput;
+ inode->i_fop = fops;
+ ino = to_promfs_inode(inode);
+ ino->prop = prop;
+ d_add(dentry, inode);
+
+ return 0;
+
+err_dput:
+ dput(dentry);
+err:
+ return -EFAULT;
+}
+
+struct dentry *promfs_create_dir(struct super_block *sb, struct dentry *root,
+ char const *name)
+{
+ struct dentry *dentry;
+ struct inode *inode;
+
+ dentry = d_alloc_name(root, name);
+ if (!dentry)
+ goto err;
+
+ inode = promfs_get_inode(sb, S_IFDIR | 0755);
+ if (!inode)
+ goto err_dput;
+ inode->i_op = &simple_dir_inode_operations;
+ inode->i_fop = &simple_dir_operations;
+ d_add(dentry, inode);
+ return dentry;
+
+err_dput:
+ dput(dentry);
+err:
+ return NULL;
+}
+
+void promfs_populate(struct super_block *sb, struct dentry *root,
+ struct device_node *node)
+{
+ struct dentry *dentry;
+ struct device_node *child;
+ struct property *prop;
+
+ if (!node)
+ return;
+
+ for (child = node->child; child; child = child->sibling) {
+ dentry = promfs_create_dir(sb, root, child->path_component_name);
+ promfs_populate(sb, dentry, child);
+ }
+ for (prop = node->properties; prop; prop = prop->next)
+ promfs_create_file(sb, root, prop, &promfs_file_ops);
+}
+
+static int promfs_fill_super(struct super_block *sb, void *data, int silent)
+{
+ struct inode *root_inode;
+ struct dentry *root_dentry;
+ struct promfs_inode *inode;
+
+ sb->s_blocksize = PAGE_CACHE_SIZE;
+ sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
+ sb->s_magic = PROMFS_MAGIC;
+ sb->s_op = &promfs_s_ops;
+ sb->s_time_gran = 1;
+ sb->s_flags |= MS_NOATIME;
+
+ root_inode = promfs_get_inode(sb, S_IFDIR | 0755);
+ if (!root_inode)
+ goto err;
+ root_inode->i_op = &simple_dir_inode_operations;
+ root_inode->i_fop = &simple_dir_operations;
+
+ inode = to_promfs_inode(root_inode);
+
+ root_dentry = d_alloc_root(root_inode);
+ if (!root_dentry)
+ goto err_iput;
+ sb->s_root = root_dentry;
+
+ promfs_populate(sb, root_dentry, of_find_node_by_path("/"));
+ return 0;
+
+err_iput:
+ iput(root_inode);
+err:
+ return -ENOMEM;
+}
+
+static int promfs_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data, struct vfsmount *mnt)
+{
+ return get_sb_single(fs_type, flags, data, promfs_fill_super, mnt);
+}
+
+static struct file_system_type promfs_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "promfs",
+ .get_sb = promfs_get_sb,
+ .kill_sb = kill_litter_super,
+};
+
+static void init_once(void *i, struct kmem_cache *cachep, unsigned long fl)
+{
+ struct promfs_inode *inode = (struct promfs_inode *) i;
+ inode_init_once(&inode->ino);
+}
+
+static int __init init_promfs(void)
+{
+ int err;
+
+ prom_build_devicetree();
+ promfs_inode_cachep = kmem_cache_create("promfs_inode_cache",
+ sizeof(struct promfs_inode), 0,
+ SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, init_once, NULL);
+ if (!promfs_inode_cachep)
+ return -ENOMEM;
+
+ err = register_filesystem(&promfs_fs_type);
+ if (err)
+ kmem_cache_destroy(promfs_inode_cachep);
+
+ return err;
+}
+
+static void __exit exit_promfs(void)
+{
+ unregister_filesystem(&promfs_fs_type);
+ kmem_cache_destroy(promfs_inode_cachep);
+}
+
+module_init(init_promfs);
+module_exit(exit_promfs);
diff -purN linux_2.6.24_org/include/asm-x86/ofw.h linux_2.6.24_olpc/include/asm-x86/ofw.h
--- linux_2.6.24_org/include/asm-x86/ofw.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/include/asm-x86/ofw.h 2008-02-15 18:57:59.000000000 +0000
@@ -0,0 +1,16 @@
+/*
+ * Definitions for Open Firmware client interface on 32-bit system.
+ * OF Cell size is 4. Integer properties are encoded big endian,
+ * as with all OF implementations.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _OFW_H
+#define _OFW_H
+
+extern int ofw(char *, int, int, ...);
+
+#endif
diff -purN linux_2.6.24_org/include/asm-x86/olpc.h linux_2.6.24_olpc/include/asm-x86/olpc.h
--- linux_2.6.24_org/include/asm-x86/olpc.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/include/asm-x86/olpc.h 2008-02-15 18:57:59.000000000 +0000
@@ -0,0 +1,107 @@
+/* OLPC machine specific definitions */
+
+#ifndef ASM_OLPC_H_
+#define ASM_OLPC_H_
+
+#include <asm/geode.h>
+
+struct olpc_platform_t {
+ int flags;
+ u32 boardrev;
+ int ecver;
+};
+
+#define OLPC_F_PRESENT 0x01
+#define OLPC_F_DCON 0x02
+#define OLPC_F_VSA 0x04
+
+/*
+ * OLPC board IDs contain the major build number within the mask 0x0ff0,
+ * and the minor build number withing 0x000f. Pre-builds have a minor
+ * number less than 8, and normal builds start at 8. For example, 0x0B10
+ * is a PreB1, and 0x0C18 is a C1.
+ */
+
+static inline u32 olpc_board(u8 id)
+{
+ return (id << 4) | 0x8;
+}
+
+static inline u32 olpc_board_pre(u8 id)
+{
+ return id << 4;
+}
+
+#ifndef CONFIG_OLPC
+
+static inline int machine_is_olpc(void) { return 0; }
+static inline int olpc_has_dcon(void) { return 0; }
+static inline int olpc_has_vsa(void) { return 0; }
+
+#else
+
+extern struct olpc_platform_t olpc_platform_info;
+
+static inline int
+machine_is_olpc(void)
+{
+ return (olpc_platform_info.flags & OLPC_F_PRESENT) ? 1 : 0;
+}
+
+static inline int
+olpc_has_dcon(void)
+{
+ return (olpc_platform_info.flags & OLPC_F_DCON) ? 1 : 0;
+}
+
+static inline int
+olpc_has_vsa(void)
+{
+ return (olpc_platform_info.flags & OLPC_F_VSA) ? 1 : 0;
+}
+
+static inline int olpc_board_at_least(u32 rev)
+{
+ return olpc_platform_info.boardrev >= rev;
+}
+
+#endif
+
+/* EC functions */
+
+int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
+ unsigned char *outbuf, size_t outlen);
+
+void olpc_register_battery_callback(void (*f)(unsigned long));
+void olpc_deregister_battery_callback(void);
+
+/* EC commands and responses */
+
+/* SCI source values */
+
+#define EC_SCI_SRC_EMPTY 0x00
+#define EC_SCI_SRC_GAME 0x01
+#define EC_SCI_SRC_BATTERY 0x02
+#define EC_SCI_SRC_BATSOC 0x04
+#define EC_SCI_SRC_BATERR 0x08
+#define EC_SCI_SRC_EBOOK 0x10
+#define EC_SCI_SRC_WLAN 0x20
+#define EC_SCI_SRC_ACPWR 0x40
+#define EC_SCI_SRC_ALL 0x7F
+
+int olpc_ec_mask_set(u8 bits);
+int olpc_ec_mask_unset(u8 bits);
+
+/* GPIO assignments */
+
+#define OLPC_GPIO_MIC_AC (1 << 1)
+#define OLPC_GPIO_DCON_IRQ (1 << 7)
+#define OLPC_GPIO_THRM_ALRM (1 << 10)
+#define OLPC_GPIO_SMB_CLK (1 << 14)
+#define OLPC_GPIO_SMB_DATA (1 << 15)
+#define OLPC_GPIO_WORKAUX (1 << 24)
+#define OLPC_GPIO_LID (1 << 26)
+#define OLPC_GPIO_ECSCI (1 << 27)
+
+#endif
+
diff -purN linux_2.6.24_org/include/asm-x86/prom.h linux_2.6.24_olpc/include/asm-x86/prom.h
--- linux_2.6.24_org/include/asm-x86/prom.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/include/asm-x86/prom.h 2008-02-15 18:57:59.000000000 +0000
@@ -0,0 +1,108 @@
+#ifndef _I386_PROM_H
+#define _I386_PROM_H
+#ifdef __KERNEL__
+
+
+/*
+ * Definitions for talking to the Open Firmware PROM on
+ * Power Macintosh computers.
+ *
+ * Copyright (C) 1996-2005 Paul Mackerras.
+ *
+ * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
+ * Updates for SPARC64 by David S. Miller
+ * Updates for i386/OLPC by Andres Salomon
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <asm/atomic.h>
+
+typedef u32 phandle;
+typedef u32 ihandle;
+
+struct property {
+ char *name;
+ int length;
+ void *value;
+ struct property *next;
+};
+
+struct device_node {
+ const char *name;
+ const char *type;
+ phandle node;
+// phandle linux_phandle;
+ char *path_component_name;
+ char *full_name;
+
+ struct property *properties;
+ struct property *deadprops; /* removed properties */
+ struct device_node *parent;
+ struct device_node *child;
+ struct device_node *sibling;
+ struct device_node *next; /* next device of same type */
+ struct device_node *allnext; /* next in list of all nodes */
+ struct proc_dir_entry *pde; /* this node's proc directory */
+ struct kref kref;
+ unsigned long _flags;
+ void *data;
+};
+
+/* flag descriptions */
+#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
+
+#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
+#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
+
+#define OF_BAD_ADDR ((u64)-1)
+
+static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
+{
+ dn->pde = de;
+}
+
+extern struct device_node *of_find_node_by_name(struct device_node *from,
+ const char *name);
+#define for_each_node_by_name(dn, name) \
+ for (dn = of_find_node_by_name(NULL, name); dn; \
+ dn = of_find_node_by_name(dn, name))
+extern struct device_node *of_find_node_by_type(struct device_node *from,
+ const char *type);
+#define for_each_node_by_type(dn, type) \
+ for (dn = of_find_node_by_type(NULL, type); dn; \
+ dn = of_find_node_by_type(dn, type))
+extern struct device_node *of_find_compatible_node(struct device_node *from,
+ const char *type, const char *compat);
+extern struct device_node *of_find_node_by_path(const char *path);
+extern struct device_node *of_find_node_by_phandle(phandle handle);
+extern struct device_node *of_get_parent(const struct device_node *node);
+extern struct device_node *of_get_next_child(const struct device_node *node,
+ struct device_node *prev);
+extern struct property *of_find_property(const struct device_node *np,
+ const char *name,
+ int *lenp);
+//extern struct device_node *of_node_get(struct device_node *node);
+//extern void of_node_put(struct device_node *node);
+extern int of_device_is_compatible(const struct device_node *device,
+ const char *);
+extern const void *of_get_property(const struct device_node *node,
+ const char *name,
+ int *lenp);
+#define get_property(node,name,lenp) of_get_property(node,name,lenp)
+extern int of_set_property(struct device_node *node, const char *name, void *val, int len);
+extern int of_getintprop_default(struct device_node *np,
+ const char *name,
+ int def);
+extern int of_n_addr_cells(struct device_node *np);
+extern int of_n_size_cells(struct device_node *np);
+
+extern void prom_build_devicetree(void);
+
+#endif /* __KERNEL__ */
+#endif
diff -purN linux_2.6.24_org/include/linux/battery.h linux_2.6.24_olpc/include/linux/battery.h
--- linux_2.6.24_org/include/linux/battery.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/include/linux/battery.h 2008-02-15 18:58:06.000000000 +0000
@@ -0,0 +1,101 @@
+/*
+ * Driver model for batteries
+ *
+ * © 2006 David Woodhouse <dwmw2@infradead.org>
+ *
+ * Based on LED Class support, by John Lenz and Richard Purdie:
+ *
+ * © 2005 John Lenz <lenz@cs.wisc.edu>
+ * © 2005-2006 Richard Purdie <rpurdie@openedhand.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#ifndef __LINUX_BATTERY_H__
+#define __LINUX_BATTERY_H__
+
+struct device;
+struct class_device;
+
+/*
+ * Battery Core
+ */
+#define PWRDEV_TYPE_BATTERY 0
+#define PWRDEV_TYPE_AC 1
+
+#define BAT_STAT_PRESENT (1<<0)
+#define BAT_STAT_LOW (1<<1)
+#define BAT_STAT_FULL (1<<2)
+#define BAT_STAT_CHARGING (1<<3)
+#define BAT_STAT_DISCHARGING (1<<4)
+#define BAT_STAT_OVERTEMP (1<<5)
+#define BAT_STAT_CRITICAL (1<<6)
+#define BAT_STAT_FIRE (1<<7)
+#define BAT_STAT_CHARGE_DONE (1<<8)
+
+/* Thou shalt not export any attributes in sysfs except these, and
+ with these units: */
+#define BAT_INFO_STATUS "status" /* Not free-form. Use
+ provided function */
+#define BAT_INFO_TEMP1 "temp1" /* °C/1000 */
+#define BAT_INFO_TEMP1_NAME "temp1_name" /* string */
+
+#define BAT_INFO_TEMP2 "temp2" /* °C/1000 */
+#define BAT_INFO_TEMP2_NAME "temp2_name" /* string */
+
+#define BAT_INFO_VOLTAGE "voltage" /* mV */
+#define BAT_INFO_VOLTAGE_DESIGN "voltage_design" /* mV */
+
+#define BAT_INFO_CURRENT "current" /* mA */
+#define BAT_INFO_CURRENT_NOW "current_now" /* mA */
+
+#define BAT_INFO_POWER "power" /* mW */
+#define BAT_INFO_POWER_NOW "power_now" /* mW */
+
+/* The following capacity/charge properties are represented in either
+ mA or mW. The CAP_UNITS property MUST be provided if any of these are. */
+#define BAT_INFO_RATE "rate" /* CAP_UNITS */
+#define BAT_INFO_CAP_LEFT "capacity_left" /* CAP_UNITS*h */
+#define BAT_INFO_CAP_DESIGN "capacity_design" /* CAP_UNITS*h */
+#define BAT_INFO_CAP_LAST_FULL "capacity_last_full" /* CAP_UNITS*h */
+#define BAT_INFO_CAP_LOW "capacity_low_thresh" /* CAP_UNITS*h */
+#define BAT_INFO_CAP_WARN "capacity_warn_thresh" /* CAP_UNITS*h */
+#define BAT_INFO_CAP_UNITS "capacity_units" /* string: must be
+ either mA or mW */
+
+#define BAT_INFO_CAP_PCT "capacity_percentage" /* integer */
+
+#define BAT_INFO_TIME_EMPTY "time_to_empty" /* seconds */
+#define BAT_INFO_TIME_EMPTY_NOW "time_to_empty_now" /* seconds */
+#define BAT_INFO_TIME_FULL "time_to_full" /* seconds */
+#define BAT_INFO_TIME_FULL_NOW "time_to_full_now" /* seconds */
+
+#define BAT_INFO_MANUFACTURER "manufacturer" /* string */
+#define BAT_INFO_TECHNOLOGY "technology" /* string */
+#define BAT_INFO_MODEL "model" /* string */
+#define BAT_INFO_SERIAL "serial" /* string */
+#define BAT_INFO_OEM_INFO "oem_info" /* string */
+
+#define BAT_INFO_CYCLE_COUNT "cycle_count" /* integer */
+#define BAT_INFO_DATE_MFR "date_manufactured" /* YYYY[-MM[-DD]] */
+#define BAT_INFO_DATE_FIRST_USE "date_first_use" /* YYYY[-MM[-DD]] */
+
+struct battery_dev {
+ int status_cap;
+ int id;
+ int type;
+ const char *name;
+
+ struct device *dev;
+};
+
+int battery_device_register(struct device *parent,
+ struct battery_dev *battery_cdev);
+void battery_device_unregister(struct battery_dev *battery_cdev);
+
+
+ssize_t battery_attribute_show_status(char *buf, unsigned long status);
+ssize_t battery_attribute_show_ac_status(char *buf, unsigned long status);
+#endif /* __LINUX_BATTERY_H__ */
diff -purN linux_2.6.24_org/include/linux/fb.h linux_2.6.24_olpc/include/linux/fb.h
--- linux_2.6.24_org/include/linux/fb.h 2008-02-15 20:10:55.000000000 +0000
+++ linux_2.6.24_olpc/include/linux/fb.h 2008-02-15 18:58:01.000000000 +0000
@@ -666,6 +666,12 @@ struct fb_ops {
/* restore saved state */
void (*fb_restore_state)(struct fb_info *info);
+ /* Shut down the graphics engine to save power */
+ int (*fb_powerdown)(struct fb_info *info);
+
+ /* Power it back up */
+ int (*fb_powerup)(struct fb_info *info);
+
/* get capability given var */
void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
struct fb_var_screeninfo *var);
@@ -945,6 +951,9 @@ extern int fb_get_color_depth(struct fb_
extern int fb_get_options(char *name, char **option);
extern int fb_new_modelist(struct fb_info *info);
+extern int fb_powerdown(struct fb_info *info);
+extern int fb_powerup(struct fb_info *info);
+
extern struct fb_info *registered_fb[FB_MAX];
extern int num_registered_fb;
extern struct class *fb_class;
diff -purN linux_2.6.24_org/include/linux/i2c-id.h linux_2.6.24_olpc/include/linux/i2c-id.h
--- linux_2.6.24_org/include/linux/i2c-id.h 2008-02-15 20:10:52.000000000 +0000
+++ linux_2.6.24_olpc/include/linux/i2c-id.h 2008-02-15 18:58:00.000000000 +0000
@@ -125,6 +125,7 @@
#define I2C_DRIVERID_LM4857 92 /* LM4857 Audio Amplifier */
#define I2C_DRIVERID_VP27SMPX 93 /* Panasonic VP27s tuner internal MPX */
#define I2C_DRIVERID_CS4270 94 /* Cirrus Logic 4270 audio codec */
+#define I2C_DRIVERID_DCON 95
#define I2C_DRIVERID_I2CDEV 900
#define I2C_DRIVERID_ARP 902 /* SMBus ARP Client */
diff -purN linux_2.6.24_org/include/linux/isl_38xx.h linux_2.6.24_olpc/include/linux/isl_38xx.h
--- linux_2.6.24_org/include/linux/isl_38xx.h 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/include/linux/isl_38xx.h 2008-02-15 18:58:05.000000000 +0000
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2002 Intersil Americas Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _LINUX_ISL_38XX_H
+#define _LINUX_ISL_38XX_H
+
+#include <asm/io.h>
+
+#define ISL38XX_CB_RX_QSIZE 8
+#define ISL38XX_CB_TX_QSIZE 32
+
+/* ISL38XX Access Point Specific definitions */
+#define ISL38XX_MAX_WDS_LINKS 8
+
+/* ISL38xx Client Specific definitions */
+#define ISL38XX_PSM_ACTIVE_STATE 0
+#define ISL38XX_PSM_POWERSAVE_STATE 1
+
+/* ISL38XX Host Interface Definitions */
+#define ISL38XX_PCI_MEM_SIZE 0x02000
+#define ISL38XX_MEMORY_WINDOW_SIZE 0x01000
+#define ISL38XX_DEV_FIRMWARE_ADDRES 0x20000
+#define ISL38XX_WRITEIO_DELAY 10 /* in us */
+#define ISL38XX_RESET_DELAY 50 /* in ms */
+#define ISL38XX_WAIT_CYCLE 10 /* in 10ms */
+#define ISL38XX_MAX_WAIT_CYCLES 10
+
+/* PCI Memory Area */
+#define ISL38XX_HARDWARE_REG 0x0000
+#define ISL38XX_CARDBUS_CIS 0x0800
+#define ISL38XX_DIRECT_MEM_WIN 0x1000
+
+/* Hardware registers */
+#define ISL38XX_DEV_INT_REG 0x0000
+#define ISL38XX_INT_IDENT_REG 0x0010
+#define ISL38XX_INT_ACK_REG 0x0014
+#define ISL38XX_INT_EN_REG 0x0018
+#define ISL38XX_GEN_PURP_COM_REG_1 0x0020
+#define ISL38XX_GEN_PURP_COM_REG_2 0x0024
+#define ISL38XX_CTRL_BLK_BASE_REG ISL38XX_GEN_PURP_COM_REG_1
+#define ISL38XX_DIR_MEM_BASE_REG 0x0030
+#define ISL38XX_CTRL_STAT_REG 0x0078
+
+/* High end mobos queue up pci writes, the following
+ * is used to "read" from after a write to force flush */
+#define ISL38XX_PCI_POSTING_FLUSH ISL38XX_INT_EN_REG
+
+/**
+ * isl38xx_w32_flush - PCI iomem write helper
+ * @base: (host) memory base address of the device
+ * @val: 32bit value (host order) to write
+ * @offset: byte offset into @base to write value to
+ *
+ * This helper takes care of writing a 32bit datum to the
+ * specified offset into the device's pci memory space, and making sure
+ * the pci memory buffers get flushed by performing one harmless read
+ * from the %ISL38XX_PCI_POSTING_FLUSH offset.
+ */
+static inline void
+isl38xx_w32_flush(void __iomem *base, u32 val, unsigned long offset)
+{
+ writel(val, base + offset);
+ (void) readl(base + ISL38XX_PCI_POSTING_FLUSH);
+}
+
+/* Device Interrupt register bits */
+#define ISL38XX_DEV_INT_RESET 0x0001
+#define ISL38XX_DEV_INT_UPDATE 0x0002
+#define ISL38XX_DEV_INT_WAKEUP 0x0008
+#define ISL38XX_DEV_INT_SLEEP 0x0010
+#define ISL38XX_DEV_INT_ABORT 0x0020
+/* thos two only used in USB */
+#define ISL38XX_DEV_INT_DATA 0x0040
+#define ISL38XX_DEV_INT_MGMT 0x0080
+
+#define ISL38XX_DEV_INT_PCIUART_CTS 0x4000
+#define ISL38XX_DEV_INT_PCIUART_DR 0x8000
+
+/* Interrupt Identification/Acknowledge/Enable register bits */
+#define ISL38XX_INT_IDENT_UPDATE 0x0002
+#define ISL38XX_INT_IDENT_INIT 0x0004
+#define ISL38XX_INT_IDENT_WAKEUP 0x0008
+#define ISL38XX_INT_IDENT_SLEEP 0x0010
+#define ISL38XX_INT_IDENT_PCIUART_CTS 0x4000
+#define ISL38XX_INT_IDENT_PCIUART_DR 0x8000
+
+#define ISL38XX_INT_SOURCES (ISL38XX_INT_IDENT_UPDATE | \
+ ISL38XX_INT_IDENT_INIT | \
+ ISL38XX_INT_IDENT_WAKEUP | \
+ ISL38XX_INT_IDENT_SLEEP | \
+ ISL38XX_INT_IDENT_PCIUART_CTS | \
+ ISL38XX_INT_IDENT_PCIUART_DR)
+
+/* Control/Status register bits */
+/* Looks like there are other meaningful bits
+ 0x20004400 seen in normal operation,
+ 0x200044db at 'timeout waiting for mgmt response'
+*/
+#define ISL38XX_CTRL_STAT_SLEEPMODE 0x00000200
+#define ISL38XX_CTRL_STAT_CLKRUN 0x00800000
+#define ISL38XX_CTRL_STAT_RESET 0x10000000
+#define ISL38XX_CTRL_STAT_RAMBOOT 0x20000000
+#define ISL38XX_CTRL_STAT_STARTHALTED 0x40000000
+#define ISL38XX_CTRL_STAT_HOST_OVERRIDE 0x80000000
+
+/* Some flags for the isl hardware registers controlling DMA inside the
+ * chip */
+#define ISL38XX_DMA_STATUS_DONE 0x00000001
+#define ISL38XX_DMA_STATUS_READY 0x00000002
+#define NET2280_EPA_FIFO_PCI_ADDR 0x20000000
+#define ISL38XX_DMA_MASTER_CONTROL_TRIGGER 0x00000004
+
+#endif /* _LINUX_ISL_38XX_H */
diff -purN linux_2.6.24_org/include/linux/pm.h linux_2.6.24_olpc/include/linux/pm.h
--- linux_2.6.24_org/include/linux/pm.h 2008-02-15 20:11:06.000000000 +0000
+++ linux_2.6.24_olpc/include/linux/pm.h 2008-02-15 18:58:06.000000000 +0000
@@ -178,6 +178,9 @@ struct dev_pm_info {
unsigned can_wakeup:1;
#ifdef CONFIG_PM_SLEEP
unsigned should_wakeup:1;
+ pm_message_t prev_state;
+ void * saved_state;
+ struct device * pm_parent;
struct list_head entry;
#endif
};
diff -purN linux_2.6.24_org/include/linux/power_supply.h linux_2.6.24_olpc/include/linux/power_supply.h
--- linux_2.6.24_org/include/linux/power_supply.h 2008-02-15 20:10:55.000000000 +0000
+++ linux_2.6.24_olpc/include/linux/power_supply.h 2008-02-15 18:58:01.000000000 +0000
@@ -98,9 +98,11 @@ enum power_supply_property {
POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
+ POWER_SUPPLY_PROP_ACCUM_CURRENT,
/* Properties of type `const char *' */
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
};
enum power_supply_type {
@@ -169,9 +171,10 @@ struct power_supply_info {
extern void power_supply_changed(struct power_supply *psy);
extern int power_supply_am_i_supplied(struct power_supply *psy);
+extern void power_supply_status_changed(struct power_supply *psy);
extern int power_supply_register(struct device *parent,
- struct power_supply *psy);
+ struct power_supply *psy);
extern void power_supply_unregister(struct power_supply *psy);
/* For APM emulation, think legacy userspace. */
diff -purN linux_2.6.24_org/include/linux/vt_kern.h linux_2.6.24_olpc/include/linux/vt_kern.h
--- linux_2.6.24_org/include/linux/vt_kern.h 2008-02-15 20:10:55.000000000 +0000
+++ linux_2.6.24_olpc/include/linux/vt_kern.h 2008-02-15 18:58:02.000000000 +0000
@@ -96,4 +96,23 @@ struct vt_spawn_console {
};
extern struct vt_spawn_console vt_spawn_con;
+/* A notifier list for console events */
+extern struct raw_notifier_head console_notifier_list;
+
+/* Called when the FG console switches to KD_TEXT mode */
+#define CONSOLE_EVENT_SWITCH_TEXT 0x01
+
+/* Called when the FG console switches to KD_GRAPHICS mode */
+#define CONSOLE_EVENT_SWITCH_GRAPHICS 0x02
+
+static inline int console_event_register(struct notifier_block *n)
+{
+ return raw_notifier_chain_register(&console_notifier_list, n);
+}
+
+static inline int console_event_unregister(struct notifier_block *n)
+{
+ return raw_notifier_chain_unregister(&console_notifier_list, n);
+}
+
#endif /* _VT_KERN_H */
diff -purN linux_2.6.24_org/include/sound/ac97_codec.h linux_2.6.24_olpc/include/sound/ac97_codec.h
--- linux_2.6.24_org/include/sound/ac97_codec.h 2008-02-15 20:10:44.000000000 +0000
+++ linux_2.6.24_olpc/include/sound/ac97_codec.h 2008-02-15 18:57:45.000000000 +0000
@@ -281,10 +281,12 @@
/* specific - Analog Devices */
#define AC97_AD_TEST 0x5a /* test register */
#define AC97_AD_TEST2 0x5c /* undocumented test register 2 */
+#define AC97_AD_HPFD_SHIFT 12 /* High Pass Filter Disable */
#define AC97_AD_CODEC_CFG 0x70 /* codec configuration */
#define AC97_AD_JACK_SPDIF 0x72 /* Jack Sense & S/PDIF */
#define AC97_AD_SERIAL_CFG 0x74 /* Serial Configuration */
#define AC97_AD_MISC 0x76 /* Misc Control Bits */
+#define AC97_AD_VREFD_SHIFT 2 /* V_REFOUT Disable (AD1888) */
/* specific - Cirrus Logic */
#define AC97_CSR_ACMODE 0x5e /* AC Mode Register */
diff -purN linux_2.6.24_org/kernel/power/console.c linux_2.6.24_olpc/kernel/power/console.c
--- linux_2.6.24_org/kernel/power/console.c 2008-02-15 20:12:34.000000000 +0000
+++ linux_2.6.24_olpc/kernel/power/console.c 2008-02-15 19:00:00.000000000 +0000
@@ -9,7 +9,7 @@
#include <linux/console.h>
#include "power.h"
-#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
+#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) && !defined(CONFIG_DISABLE_SUSPEND_VT_SWITCH)
#define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)
static int orig_fgconsole, orig_kmsg;
diff -purN linux_2.6.24_org/kernel/power/Kconfig linux_2.6.24_olpc/kernel/power/Kconfig
--- linux_2.6.24_org/kernel/power/Kconfig 2008-02-15 20:12:34.000000000 +0000
+++ linux_2.6.24_olpc/kernel/power/Kconfig 2008-02-15 19:00:00.000000000 +0000
@@ -37,9 +37,22 @@ config PM_DEBUG
code. This is helpful when debugging and reporting PM bugs, like
suspend support.
+config DISABLE_SUSPEND_VT_SWITCH
+ bool "Disable the console switch prior to suspend (DANGEROUS)"
+ depends on PM_DEBUG
+ default n
+ ---help---
+ This option disables the automatic switch to VT console that happens
+ prior to Linux going into a suspend/sleep. Your video card/framebuffer
+ must be able to properly restore the display (even if X is doing
+ something crazy!) in this scenario. This is useful for saving
+ precious milliseconds during suspend and resume.
+
+ If unsure, say N.
+
config PM_VERBOSE
bool "Verbose Power Management debugging"
- depends on PM_DEBUG
+ depends on VT_CONSOLE && PM && EXPERIMENTAL
default n
---help---
This option enables verbose messages from the Power Management code.
diff -purN linux_2.6.24_org/kernel/power/main.c linux_2.6.24_olpc/kernel/power/main.c
--- linux_2.6.24_org/kernel/power/main.c 2008-02-15 20:12:34.000000000 +0000
+++ linux_2.6.24_olpc/kernel/power/main.c 2008-02-15 19:00:00.000000000 +0000
@@ -76,11 +76,13 @@ static int suspend_prepare(void)
if (!suspend_ops || !suspend_ops->enter)
return -EPERM;
+#ifndef CONFIG_OLPC_PM
error = pm_notifier_call_chain(PM_SUSPEND_PREPARE);
if (error)
goto Finish;
pm_prepare_console();
+#endif
if (freeze_processes()) {
error = -EAGAIN;
diff -purN linux_2.6.24_org/scripts/kconfig/conf.c linux_2.6.24_olpc/scripts/kconfig/conf.c
--- linux_2.6.24_org/scripts/kconfig/conf.c 2008-02-15 20:10:15.000000000 +0000
+++ linux_2.6.24_olpc/scripts/kconfig/conf.c 2008-02-15 18:57:09.000000000 +0000
@@ -22,6 +22,7 @@ enum {
ask_new,
ask_silent,
set_default,
+ set_silentdefault,
set_yes,
set_mod,
set_no,
@@ -64,10 +65,11 @@ static void strip(char *str)
static void check_stdin(void)
{
- if (!valid_stdin && input_mode == ask_silent) {
+ if (!valid_stdin && (input_mode == ask_silent ||
+ input_mode == set_silentdefault)) {
printf(_("aborted!\n\n"));
printf(_("Console input/output is redirected. "));
- printf(_("Run 'make oldconfig' to update configuration.\n\n"));
+ printf(_("Configuration file needs to be updated.\n\n"));
exit(1);
}
}
@@ -102,6 +104,7 @@ static int conf_askvalue(struct symbol *
break;
case ask_new:
case ask_silent:
+ case set_silentdefault:
if (sym_has_value(sym)) {
printf("%s\n", def);
return 0;
@@ -352,6 +355,7 @@ static int conf_choice(struct menu *menu
switch (input_mode) {
case ask_new:
case ask_silent:
+ case set_silentdefault:
if (!is_new) {
cnt = def;
printf("%d\n", cnt);
@@ -424,7 +428,9 @@ static void conf(struct menu *menu)
switch (prop->type) {
case P_MENU:
- if (input_mode == ask_silent && rootEntry != menu) {
+ if ((input_mode == ask_silent ||
+ input_mode == set_silentdefault) &&
+ rootEntry != menu) {
check_conf(menu);
return;
}
@@ -508,6 +514,16 @@ int main(int ac, char **av)
input_mode = ask_silent;
valid_stdin = isatty(0) && isatty(1) && isatty(2);
break;
+ case 'S':
+ input_mode = set_silentdefault;
+ valid_stdin = isatty(0) && isatty(1) && isatty(2);
+ defconfig_file = av[i++];
+ if (!defconfig_file) {
+ printf("%s: No default config file specified\n",
+ av[0]);
+ exit(1);
+ }
+ break;
case 'd':
input_mode = set_default;
break;
@@ -557,6 +573,14 @@ int main(int ac, char **av)
exit(1);
}
break;
+ case set_silentdefault:
+ if (conf_read(defconfig_file)) {
+ printf("***\n"
+ "*** Can't find default configuration \"%s\"!\n"
+ "***\n", defconfig_file);
+ exit(1);
+ }
+ break;
case ask_silent:
if (stat(".config", &tmpstat)) {
printf(_("***\n"
@@ -597,7 +621,7 @@ int main(int ac, char **av)
break;
}
- if (input_mode != ask_silent) {
+ if (input_mode != ask_silent && input_mode != set_silentdefault) {
rootEntry = &rootmenu;
conf(&rootmenu);
if (input_mode == ask_all) {
@@ -610,19 +634,21 @@ int main(int ac, char **av)
fprintf(stderr, _("\n*** Kernel configuration requires explicit update.\n\n"));
return 1;
}
- } else
+ } else if (input_mode != set_silentdefault)
goto skip_check;
do {
conf_cnt = 0;
check_conf(&rootmenu);
} while (conf_cnt);
- if (conf_write(NULL)) {
+ if (conf_write(NULL, input_mode == ask_silent ||
+ input_mode == set_silentdefault)) {
fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
return 1;
}
skip_check:
- if (input_mode == ask_silent && conf_write_autoconf()) {
+ if ((input_mode == ask_silent || input_mode == set_silentdefault) &&
+ conf_write_autoconf()) {
fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
return 1;
}
diff -purN linux_2.6.24_org/scripts/kconfig/confdata.c linux_2.6.24_olpc/scripts/kconfig/confdata.c
--- linux_2.6.24_org/scripts/kconfig/confdata.c 2008-02-15 20:10:15.000000000 +0000
+++ linux_2.6.24_olpc/scripts/kconfig/confdata.c 2008-02-15 18:57:09.000000000 +0000
@@ -393,7 +393,7 @@ int conf_read(const char *name)
return 0;
}
-int conf_write(const char *name)
+int conf_write(const char *name, int quiet)
{
FILE *out;
struct symbol *sym;
@@ -548,9 +548,10 @@ int conf_write(const char *name)
return 1;
}
- printf(_("#\n"
- "# configuration written to %s\n"
- "#\n"), newname);
+ if (!quiet)
+ printf("#\n"
+ "# configuration written to %s\n"
+ "#\n", newname);
sym_set_change_count(0);
diff -purN linux_2.6.24_org/scripts/kconfig/gconf.c linux_2.6.24_olpc/scripts/kconfig/gconf.c
--- linux_2.6.24_org/scripts/kconfig/gconf.c 2008-02-15 20:10:15.000000000 +0000
+++ linux_2.6.24_olpc/scripts/kconfig/gconf.c 2008-02-15 18:57:09.000000000 +0000
@@ -621,7 +621,7 @@ void on_load1_activate(GtkMenuItem * men
void on_save_activate(GtkMenuItem * menuitem, gpointer user_data)
{
- if (conf_write(NULL))
+ if (conf_write(NULL, 0))
text_insert_msg(_("Error"), _("Unable to save configuration !"));
}
@@ -634,7 +634,7 @@ store_filename(GtkFileSelection * file_s
fn = gtk_file_selection_get_filename(GTK_FILE_SELECTION
(user_data));
- if (conf_write(fn))
+ if (conf_write(fn, 0))
text_insert_msg(_("Error"), _("Unable to save configuration !"));
gtk_widget_destroy(GTK_WIDGET(user_data));
diff -purN linux_2.6.24_org/scripts/kconfig/lkc_proto.h linux_2.6.24_olpc/scripts/kconfig/lkc_proto.h
--- linux_2.6.24_org/scripts/kconfig/lkc_proto.h 2008-02-15 20:10:15.000000000 +0000
+++ linux_2.6.24_olpc/scripts/kconfig/lkc_proto.h 2008-02-15 18:57:09.000000000 +0000
@@ -3,7 +3,7 @@
P(conf_parse,void,(const char *name));
P(conf_read,int,(const char *name));
P(conf_read_simple,int,(const char *name, int));
-P(conf_write,int,(const char *name));
+P(conf_write,int,(const char *name, int));
P(conf_write_autoconf,int,(void));
P(conf_get_changed,bool,(void));
P(conf_set_changed_callback, void,(void (*fn)(void)));
diff -purN linux_2.6.24_org/scripts/kconfig/Makefile linux_2.6.24_olpc/scripts/kconfig/Makefile
--- linux_2.6.24_org/scripts/kconfig/Makefile 2008-02-15 20:10:15.000000000 +0000
+++ linux_2.6.24_olpc/scripts/kconfig/Makefile 2008-02-15 18:57:09.000000000 +0000
@@ -69,6 +69,9 @@ endif
%_defconfig: $(obj)/conf
$(Q)$< -D arch/$(SRCARCH)/configs/$@ $(Kconfig)
+%_silentdefconfig: $(obj)/conf
+ $(Q)$< -S arch/$(ARCH)/configs/$(subst _silentdefconfig,_defconfig,$@) arch/$(ARCH)/Kconfig
+
# Help text used by make help
help:
@echo ' config - Update current config utilising a line-oriented program'
Binary files linux_2.6.24_org/scripts/kconfig/mconf and linux_2.6.24_olpc/scripts/kconfig/mconf differ
diff -purN linux_2.6.24_org/scripts/kconfig/mconf.c linux_2.6.24_olpc/scripts/kconfig/mconf.c
--- linux_2.6.24_org/scripts/kconfig/mconf.c 2008-02-15 20:10:15.000000000 +0000
+++ linux_2.6.24_olpc/scripts/kconfig/mconf.c 2008-02-15 18:57:09.000000000 +0000
@@ -885,7 +885,7 @@ static void conf_save(void)
case 0:
if (!dialog_input_result[0])
return;
- if (!conf_write(dialog_input_result)) {
+ if (!conf_write(dialog_input_result, 0)) {
set_config_filename(dialog_input_result);
return;
}
@@ -945,7 +945,7 @@ int main(int ac, char **av)
switch (res) {
case 0:
- if (conf_write(filename)) {
+ if (conf_write(filename, 0)) {
fprintf(stderr, _("\n\n"
"Error during writing of the kernel configuration.\n"
"Your kernel configuration changes were NOT saved."
diff -purN linux_2.6.24_org/scripts/kconfig/qconf.cc linux_2.6.24_olpc/scripts/kconfig/qconf.cc
--- linux_2.6.24_org/scripts/kconfig/qconf.cc 2008-02-15 20:10:15.000000000 +0000
+++ linux_2.6.24_olpc/scripts/kconfig/qconf.cc 2008-02-15 18:57:09.000000000 +0000
@@ -1458,7 +1458,7 @@ void ConfigMainWindow::loadConfig(void)
void ConfigMainWindow::saveConfig(void)
{
- if (conf_write(NULL))
+ if (conf_write(NULL, 0))
QMessageBox::information(this, "qconf", "Unable to save configuration!");
}
@@ -1467,7 +1467,7 @@ void ConfigMainWindow::saveConfigAs(void
QString s = QFileDialog::getSaveFileName(".config", NULL, this);
if (s.isNull())
return;
- if (conf_write(QFile::encodeName(s)))
+ if (conf_write(QFile::encodeName(s), 0))
QMessageBox::information(this, "qconf", "Unable to save configuration!");
}
@@ -1619,7 +1619,7 @@ void ConfigMainWindow::closeEvent(QClose
mb.setButtonText(QMessageBox::Cancel, "Cancel Exit");
switch (mb.exec()) {
case QMessageBox::Yes:
- conf_write(NULL);
+ conf_write(NULL, 0);
case QMessageBox::No:
e->accept();
break;
diff -purN linux_2.6.24_org/sound/pci/ac97/ac97_patch.c linux_2.6.24_olpc/sound/pci/ac97/ac97_patch.c
--- linux_2.6.24_org/sound/pci/ac97/ac97_patch.c 2008-02-15 20:10:24.000000000 +0000
+++ linux_2.6.24_olpc/sound/pci/ac97/ac97_patch.c 2008-02-15 18:57:24.000000000 +0000
@@ -2029,8 +2029,9 @@ static const struct snd_kcontrol_new snd
.get = snd_ac97_ad1888_lohpsel_get,
.put = snd_ac97_ad1888_lohpsel_put
},
- AC97_SINGLE("V_REFOUT Enable", AC97_AD_MISC, 2, 1, 1),
- AC97_SINGLE("High Pass Filter Enable", AC97_AD_TEST2, 12, 1, 1),
+ AC97_SINGLE("V_REFOUT Enable", AC97_AD_MISC, AC97_AD_VREFD_SHIFT, 1, 1),
+ AC97_SINGLE("High Pass Filter Enable", AC97_AD_TEST2,
+ AC97_AD_HPFD_SHIFT, 1, 1),
AC97_SINGLE("Spread Front to Surround and Center/LFE", AC97_AD_MISC, 7, 1, 0),
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
diff -purN linux_2.6.24_org/sound/pci/cs5535audio/cs5535audio.c linux_2.6.24_olpc/sound/pci/cs5535audio/cs5535audio.c
--- linux_2.6.24_org/sound/pci/cs5535audio/cs5535audio.c 2008-02-15 20:10:23.000000000 +0000
+++ linux_2.6.24_olpc/sound/pci/cs5535audio/cs5535audio.c 2008-02-15 18:57:23.000000000 +0000
@@ -145,7 +145,7 @@ static unsigned short snd_cs5535audio_ac
return snd_cs5535audio_codec_read(cs5535au, reg);
}
-static int snd_cs5535audio_mixer(struct cs5535audio *cs5535au)
+static int __devinit snd_cs5535audio_mixer(struct cs5535audio *cs5535au)
{
struct snd_card *card = cs5535au->card;
struct snd_ac97_bus *pbus;
@@ -160,10 +160,14 @@ static int snd_cs5535audio_mixer(struct
return err;
memset(&ac97, 0, sizeof(ac97));
- ac97.scaps = AC97_SCAP_AUDIO|AC97_SCAP_SKIP_MODEM;
+ ac97.scaps = AC97_SCAP_AUDIO | AC97_SCAP_SKIP_MODEM
+ | AC97_SCAP_POWER_SAVE;
ac97.private_data = cs5535au;
ac97.pci = cs5535au->pci;
+ /* olpc_prequirks is dummied out if not olpc */
+ olpc_prequirks(card, &ac97);
+
if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) {
snd_printk(KERN_ERR "mixer failed\n");
return err;
@@ -171,6 +175,12 @@ static int snd_cs5535audio_mixer(struct
snd_ac97_tune_hardware(cs5535au->ac97, ac97_quirks, ac97_quirk);
+ /* olpc_quirks is dummied out if not olpc */
+ if (( err = olpc_quirks(card, cs5535au->ac97)) < 0) {
+ snd_printk(KERN_ERR "olpc quirks failed\n");
+ return err;
+ }
+
return 0;
}
diff -purN linux_2.6.24_org/sound/pci/cs5535audio/cs5535audio.h linux_2.6.24_olpc/sound/pci/cs5535audio/cs5535audio.h
--- linux_2.6.24_org/sound/pci/cs5535audio/cs5535audio.h 2008-02-15 20:10:23.000000000 +0000
+++ linux_2.6.24_olpc/sound/pci/cs5535audio/cs5535audio.h 2008-02-15 18:57:23.000000000 +0000
@@ -78,6 +78,7 @@ struct cs5535audio_dma {
unsigned int buf_addr, buf_bytes;
unsigned int period_bytes, periods;
u32 saved_prd;
+ int pcm_open_flag;
};
struct cs5535audio {
@@ -93,8 +94,21 @@ struct cs5535audio {
struct cs5535audio_dma dmas[NUM_CS5535AUDIO_DMAS];
};
+#ifdef CONFIG_PM
int snd_cs5535audio_suspend(struct pci_dev *pci, pm_message_t state);
int snd_cs5535audio_resume(struct pci_dev *pci);
+#endif
+
+#ifdef CONFIG_OLPC
+void olpc_prequirks(struct snd_card *card, struct snd_ac97_template *ac97) __devinit;
+int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97) __devinit;
+int olpc_ai_enable(struct snd_ac97 *ac97, u8 val);
+#else
+#define olpc_prequirks(arg,arg2) do {} while (0)
+#define olpc_quirks(arg,arg2) (0)
+#define olpc_ai_enable(a, v) (0)
+#endif
+
int __devinit snd_cs5535audio_pcm(struct cs5535audio *cs5535audio);
#endif /* __SOUND_CS5535AUDIO_H */
diff -purN linux_2.6.24_org/sound/pci/cs5535audio/cs5535audio_olpc.c linux_2.6.24_olpc/sound/pci/cs5535audio/cs5535audio_olpc.c
--- linux_2.6.24_org/sound/pci/cs5535audio/cs5535audio_olpc.c 1970-01-01 01:00:00.000000000 +0100
+++ linux_2.6.24_olpc/sound/pci/cs5535audio/cs5535audio_olpc.c 2008-02-15 18:57:23.000000000 +0000
@@ -0,0 +1,110 @@
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/control.h>
+#include <sound/ac97_codec.h>
+
+#include <asm/olpc.h>
+#include "cs5535audio.h"
+
+/*
+ * OLPC has an additional feature on top of the regular AD1888 codec features.
+ * It has an Analog Input mode that is switched into (after disabling the
+ * High Pass Filter) via GPIO. It is only supported on B2 and later models.
+ */
+
+int olpc_ai_enable(struct snd_ac97 *ac97, u8 val)
+{
+ int err;
+
+ /*
+ * update the High Pass Filter (via AC97_AD_TEST2), and then set
+ * Analog Input mode through a GPIO.
+ */
+
+ if (val) {
+ err = snd_ac97_update_bits(ac97, AC97_AD_TEST2,
+ 1<<AC97_AD_HPFD_SHIFT, 1<<AC97_AD_HPFD_SHIFT);
+ geode_gpio_set(OLPC_GPIO_MIC_AC, GPIO_OUTPUT_VAL);
+ }
+ else {
+ err = snd_ac97_update_bits(ac97, AC97_AD_TEST2,
+ 1<<AC97_AD_HPFD_SHIFT, 0);
+ geode_gpio_clear(OLPC_GPIO_MIC_AC, GPIO_OUTPUT_VAL);
+ }
+ if (err < 0)
+ snd_printk(KERN_ERR "Error updating AD_TEST2: %d\n", err);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(olpc_ai_enable);
+
+static int snd_cs5535audio_ai_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 1;
+ return 0;
+}
+
+static int snd_cs5535audio_ai_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = geode_gpio_isset(OLPC_GPIO_MIC_AC,
+ GPIO_OUTPUT_VAL);
+ return 0;
+}
+
+static int snd_cs5535audio_ai_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct cs5535audio *cs5535au = snd_kcontrol_chip(kcontrol);
+ struct snd_ac97 *ac97 = cs5535au->ac97;
+
+ olpc_ai_enable(ac97, ucontrol->value.integer.value[0]);
+
+ return 1;
+}
+
+static struct snd_kcontrol_new snd_cs5535audio_controls __devinitdata =
+{
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "DC Mode Enable",
+ .info = snd_cs5535audio_ai_info,
+ .get = snd_cs5535audio_ai_get,
+ .put = snd_cs5535audio_ai_put,
+ .private_value = 0
+};
+
+void __devinit olpc_prequirks(struct snd_card *card,
+ struct snd_ac97_template *ac97)
+{
+ /* Bail if this isn't an OLPC platform */
+ if (!machine_is_olpc())
+ return;
+
+ /* If on an OLPC B3 or higher, invert EAPD. */
+ if (olpc_board_at_least(olpc_board_pre(0xb3)))
+ ac97->scaps |= AC97_SCAP_INV_EAPD;
+}
+
+int __devinit olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97)
+{
+ struct snd_ctl_elem_id elem;
+
+ /* Bail if this isn't an OLPC platform */
+ if (!machine_is_olpc())
+ return 0;
+
+ /* drop the original ad1888 HPF control */
+ memset(&elem, 0, sizeof(elem));
+ elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+ strcpy(elem.name, "High Pass Filter Enable");
+ snd_ctl_remove_id(card, &elem);
+
+ /* add the override for OLPC's HPF */
+ return snd_ctl_add(card, snd_ctl_new1(&snd_cs5535audio_controls,
+ ac97->private_data));
+}
diff -purN linux_2.6.24_org/sound/pci/cs5535audio/cs5535audio_pcm.c linux_2.6.24_olpc/sound/pci/cs5535audio/cs5535audio_pcm.c
--- linux_2.6.24_org/sound/pci/cs5535audio/cs5535audio_pcm.c 2008-02-15 20:10:23.000000000 +0000
+++ linux_2.6.24_olpc/sound/pci/cs5535audio/cs5535audio_pcm.c 2008-02-15 18:57:23.000000000 +0000
@@ -259,6 +259,9 @@ static int snd_cs5535audio_hw_params(str
err = cs5535audio_build_dma_packets(cs5535au, dma, substream,
params_periods(hw_params),
params_period_bytes(hw_params));
+ if (!err)
+ dma->pcm_open_flag = 1;
+
return err;
}
@@ -267,6 +270,15 @@ static int snd_cs5535audio_hw_free(struc
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
struct cs5535audio_dma *dma = substream->runtime->private_data;
+ if (dma->pcm_open_flag) {
+ if (substream == cs5535au->playback_substream)
+ snd_ac97_update_power(cs5535au->ac97,
+ AC97_PCM_FRONT_DAC_RATE, 0);
+ else
+ snd_ac97_update_power(cs5535au->ac97,
+ AC97_PCM_LR_ADC_RATE, 0);
+ dma->pcm_open_flag = 0;
+ }
cs5535audio_clear_dma_packets(cs5535au, dma, substream);
return snd_pcm_lib_free_pages(substream);
}
@@ -341,6 +353,7 @@ static int snd_cs5535audio_capture_open(
int err;
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_ac97 *ac97 = cs5535au->ac97;
runtime->hw = snd_cs5535audio_capture;
cs5535au->capture_substream = substream;
@@ -348,11 +361,29 @@ static int snd_cs5535audio_capture_open(
if ((err = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
- return 0;
+
+#ifdef CONFIG_OLPC
+ /* Disable Analog Input */
+ olpc_ai_enable(ac97, 0);
+ /* Enable V_ref bias while recording. */
+ snd_ac97_update_bits(ac97, AC97_AD_MISC, 1<<AC97_AD_VREFD_SHIFT, 0);
+#endif
+ return err;
}
static int snd_cs5535audio_capture_close(struct snd_pcm_substream *substream)
{
+#ifdef CONFIG_OLPC
+ struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+ struct snd_ac97 *ac97 = cs5535au->ac97;
+
+ /* Disable Analog Input */
+ olpc_ai_enable(ac97, 0);
+ /* Disable V_ref bias. */
+ snd_ac97_update_bits(ac97, AC97_AD_MISC, 1<<AC97_AD_VREFD_SHIFT,
+ 1<<AC97_AD_VREFD_SHIFT);
+#endif
+
return 0;
}
diff -purN linux_2.6.24_org/sound/pci/cs5535audio/Makefile linux_2.6.24_olpc/sound/pci/cs5535audio/Makefile
--- linux_2.6.24_org/sound/pci/cs5535audio/Makefile 2008-02-15 20:10:23.000000000 +0000
+++ linux_2.6.24_olpc/sound/pci/cs5535audio/Makefile 2008-02-15 18:57:23.000000000 +0000
@@ -5,5 +5,9 @@
snd-cs5535audio-y := cs5535audio.o cs5535audio_pcm.o
snd-cs5535audio-$(CONFIG_PM) += cs5535audio_pm.o
+ifdef CONFIG_OLPC
+snd-cs5535audio-objs += cs5535audio_olpc.o
+endif
+
# Toplevel Module Dependency
obj-$(CONFIG_SND_CS5535AUDIO) += snd-cs5535audio.o
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