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incomplete Gumstix support
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10955 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
kaloz
203
target/linux/pxa/patches-2.6.21/018-modular-init-smc91x.patch
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203
target/linux/pxa/patches-2.6.21/018-modular-init-smc91x.patch
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@@ -0,0 +1,203 @@
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Index: linux-2.6.21gum/drivers/net/Kconfig
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===================================================================
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--- linux-2.6.21gum.orig/drivers/net/Kconfig
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+++ linux-2.6.21gum/drivers/net/Kconfig
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@@ -836,6 +836,12 @@ config SMC91X
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module, say M here and read <file:Documentation/modules.txt> as well
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as <file:Documentation/networking/net-modules.txt>.
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+config SMC91X_GUMSTIX
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+ tristate
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+ default m if SMC91X=m
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+ default y if SMC91X=y
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+ depends on SMC91X && ARCH_GUMSTIX
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+
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config SMC9194
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tristate "SMC 9194 support"
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depends on NET_VENDOR_SMC && (ISA || MAC && BROKEN)
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Index: linux-2.6.21gum/drivers/net/Makefile
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===================================================================
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--- linux-2.6.21gum.orig/drivers/net/Makefile
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+++ linux-2.6.21gum/drivers/net/Makefile
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@@ -200,6 +200,7 @@ obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o
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obj-$(CONFIG_MACB) += macb.o
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+obj-$(CONFIG_SMC91X_GUMSTIX) += gumstix-smc91x.o
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obj-$(CONFIG_ARM) += arm/
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obj-$(CONFIG_DEV_APPLETALK) += appletalk/
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obj-$(CONFIG_TR) += tokenring/
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Index: linux-2.6.21gum/drivers/net/smc91x.c
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===================================================================
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--- linux-2.6.21gum.orig/drivers/net/smc91x.c
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+++ linux-2.6.21gum/drivers/net/smc91x.c
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@@ -2373,6 +2373,10 @@ static struct platform_driver smc_driver
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},
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};
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+#ifdef CONFIG_ARCH_GUMSTIX
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+extern void gumstix_smc91x_load(void);
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+#endif
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+
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static int __init smc_init(void)
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{
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#ifdef MODULE
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@@ -2384,6 +2388,10 @@ static int __init smc_init(void)
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#endif
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#endif
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+#ifdef CONFIG_ARCH_GUMSTIX
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+ gumstix_smc91x_load();
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+#endif
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+
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return platform_driver_register(&smc_driver);
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}
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Index: linux-2.6.21gum/drivers/net/gumstix-smc91x.c
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===================================================================
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--- /dev/null
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+++ linux-2.6.21gum/drivers/net/gumstix-smc91x.c
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@@ -0,0 +1,143 @@
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+/*
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+ * Gumstix SMC91C111 chip intialization driver
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+ *
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+ * Author: Craig Hughes
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+ * Created: December 9, 2004
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+ * Copyright: (C) 2004 Craig Hughes
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/ioport.h>
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+#include <linux/device.h>
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+#include <linux/platform_device.h>
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+#include <linux/delay.h>
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+
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+#include <asm/hardware.h>
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+#include <asm/arch/pxa-regs.h>
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+#include <asm/delay.h>
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+
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+#include <asm/arch/gumstix.h>
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+
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+#define SMC_DEBUG 0
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+#include <asm/io.h>
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+#include "smc91x.h"
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+
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+static struct resource gumstix_smc91x0_resources[] = {
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+ [0] = {
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+ .name = "smc91x-regs",
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+ .start = PXA_CS1_PHYS + 0x00000300,
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+ .end = PXA_CS1_PHYS + 0x000fffff,
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+ .flags = IORESOURCE_MEM,
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+ },
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+ [1] = {
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+ .start = GUMSTIX_ETH0_IRQ,
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+ .end = GUMSTIX_ETH0_IRQ,
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+ .flags = IORESOURCE_IRQ,
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+ },
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+};
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+
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+static struct resource gumstix_smc91x1_resources[] = {
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+ [0] = {
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+ .name = "smc91x-regs",
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+ .start = PXA_CS2_PHYS + 0x00000300,
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+ .end = PXA_CS2_PHYS + 0x000fffff,
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+ .flags = IORESOURCE_MEM,
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+ },
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+ [1] = {
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+ .start = GUMSTIX_ETH1_IRQ,
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+ .end = GUMSTIX_ETH1_IRQ,
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+ .flags = IORESOURCE_IRQ,
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+ },
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+};
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+
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+static struct platform_device gumstix_smc91x0_device = {
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+ .name = "smc91x",
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+ .id = 0,
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+ .num_resources = ARRAY_SIZE(gumstix_smc91x0_resources),
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+ .resource = gumstix_smc91x0_resources,
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+};
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+
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+static struct platform_device gumstix_smc91x1_device = {
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+ .name = "smc91x",
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+ .id = 1,
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+ .num_resources = ARRAY_SIZE(gumstix_smc91x1_resources),
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+ .resource = gumstix_smc91x1_resources,
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+};
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+
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+static struct platform_device *smc91x_devices[] = {
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+ &gumstix_smc91x0_device,
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+ &gumstix_smc91x1_device,
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+};
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+
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+/* First we're going to test if there's a 2nd SMC91C111, and if not, then we'll free up those resources and the GPIO lines
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+ * that it would otherwise use. We have no choice but to probe by doing:
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+ * Set nCS2 to CS2 mode
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+ * Set the reset line to GPIO out mode, and pull it high, then drop it low (to trigger reset)
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+ * Read from the memory space to check for the sentinel sequence identifying a likely SMC91C111 device
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+ */
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+int __init gumstix_smc91x_init(void)
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+{
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+ unsigned int val, num_devices=ARRAY_SIZE(smc91x_devices);
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+ void *ioaddr;
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+
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+ /* Set up nPWE */
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+ pxa_gpio_mode(GPIO49_nPWE_MD);
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+
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+ pxa_gpio_mode(GPIO78_nCS_2_MD);
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+ // If either if statement fails, then we'll drop out and turn_off_eth1,
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+ // if both succeed, then we'll skip that and just proceed with 2 cards
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+ if(request_mem_region(gumstix_smc91x1_resources[0].start, SMC_IO_EXTENT, "smc91x probe"))
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+ {
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+ ioaddr = ioremap(gumstix_smc91x1_resources[0].start, SMC_IO_EXTENT);
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+ val = ioread16(ioaddr + BANK_SELECT);
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+ iounmap(ioaddr);
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+ release_mem_region(gumstix_smc91x1_resources[0].start, SMC_IO_EXTENT);
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+ if ((val & 0xFF00) == 0x3300) {
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+ goto proceed;
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+ }
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+ }
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+
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+turn_off_eth1:
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+ // This is apparently not an SMC91C111
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+ // So, let's decrement the number of devices to request, and reset the GPIO lines to GPIO IN mode
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+ num_devices--;
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+ smc91x_devices[1] = NULL;
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+ pxa_gpio_mode(78 | GPIO_IN);
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+
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+proceed:
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+ pxa_gpio_mode(GPIO15_nCS_1_MD);
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+
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+ if(smc91x_devices[1]) pxa_gpio_mode(GPIO_GUMSTIX_ETH1_RST_MD);
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+ pxa_gpio_mode(GPIO_GUMSTIX_ETH0_RST_MD);
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+ if(smc91x_devices[1]) GPSR(GPIO_GUMSTIX_ETH1_RST) = GPIO_bit(GPIO_GUMSTIX_ETH1_RST);
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+ GPSR(GPIO_GUMSTIX_ETH0_RST) = GPIO_bit(GPIO_GUMSTIX_ETH0_RST);
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+ udelay(1); // Hold RESET for at least 100ns
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+ if(smc91x_devices[1]) GPCR(GPIO_GUMSTIX_ETH1_RST) = GPIO_bit(GPIO_GUMSTIX_ETH1_RST);
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+ GPCR(GPIO_GUMSTIX_ETH0_RST) = GPIO_bit(GPIO_GUMSTIX_ETH0_RST);
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+ msleep(50);
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+
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+ return platform_add_devices(smc91x_devices, num_devices);
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+}
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+
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+void __exit gumstix_smc91x_exit(void)
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+{
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+ if(smc91x_devices[1] != NULL) platform_device_unregister(&gumstix_smc91x1_device);
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+ platform_device_unregister(&gumstix_smc91x0_device);
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+}
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+
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+void gumstix_smc91x_load(void) {}
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+EXPORT_SYMBOL(gumstix_smc91x_load);
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+
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+module_init(gumstix_smc91x_init);
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+module_exit(gumstix_smc91x_exit);
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+
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+MODULE_LICENSE("GPL");
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+MODULE_AUTHOR("Craig Hughes <craig@gumstix.com>");
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+MODULE_DESCRIPTION("Gumstix board SMC91C111 chip initialization driver");
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+MODULE_VERSION("1:0.1");
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