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ixp4xx: New patch to support FSG-3 buttons
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9276 3c298f89-4303-0410-b956-a3cf2f4a3e73
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184
target/linux/ixp4xx/patches/997-fsg3_buttons.patch
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184
target/linux/ixp4xx/patches/997-fsg3_buttons.patch
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diff -Nur linux-2.6.21.6-orig/arch/arm/mach-ixp4xx/fsg-power.c linux-2.6.21.6/arch/arm/mach-ixp4xx/fsg-power.c
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--- linux-2.6.21.6-orig/arch/arm/mach-ixp4xx/fsg-power.c 1970-01-01 01:00:00.000000000 +0100
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+++ linux-2.6.21.6/arch/arm/mach-ixp4xx/fsg-power.c 2007-10-12 22:32:27.000000000 +0200
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@@ -0,0 +1,168 @@
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+/*
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+ * arch/arm/mach-ixp4xx/fsg-power.c
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+ *
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+ * FSG buttons driver
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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 version 2 as
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+ * published by the Free Software Foundation.
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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/reboot.h>
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+#include <linux/irq.h>
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+#include <linux/interrupt.h>
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+#include <asm/mach-types.h>
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+#include <linux/kernel.h>
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+
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+struct event_t {
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+ struct work_struct wq;
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+ char *button_name;
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+ int action;
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+};
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+
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+static void hotplug_button(struct event_t *event)
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+{
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+ static char buf[128];
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+ char *argv[3], *envp[6], *action;
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+ int i;
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+
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+ i = 0;
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+ argv[i++] = "/sbin/hotplug";
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+ argv[i++] = "button";
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+ argv[i] = 0;
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+
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+ i = 0;
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+ /* minimal command environment */
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+ envp [i++] = "HOME=/";
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+ envp [i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
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+ envp [i++] = "SUBSYSTEM=button";
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+
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+ snprintf(buf, 128, "BUTTON=%s", event->button_name);
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+ envp [i++] = buf;
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+
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+ action = event->action ? "released" : "pressed";
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+ snprintf(buf, 128, "ACTION=%s", action);
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+ envp [i++] = buf;
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+
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+ envp [i] = 0;
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+
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+ // create hotplug event
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+ call_usermodehelper (argv[0], argv, envp, 0);
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+
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+ //destroy event structure
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+ kfree(event);
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+}
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+
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+static irqreturn_t fsg_sync_button_handler(int irq, void *dev_id)
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+{
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+ int holdkey;
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+
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+ //check button status
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+ gpio_line_get(FSG_SB_GPIO, &holdkey);
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+
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+ struct event_t *event;
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+ //create event
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+ if ((event = (struct event_t *)kzalloc (sizeof(struct event_t), GFP_ATOMIC))) {
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+ event->action = holdkey;
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+ event->button_name = "sync";
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+
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+ INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
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+ schedule_work(&event->wq);
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+ }
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+
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+ return IRQ_HANDLED;
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+}
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+
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+static irqreturn_t fsg_reset_button_handler(int irq, void *dev_id)
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+{
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+ int holdkey;
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+
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+ //check button status
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+ gpio_line_get(FSG_RB_GPIO, &holdkey);
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+
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+ struct event_t *event;
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+ //create event
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+ if ((event = (struct event_t *)kzalloc (sizeof(struct event_t), GFP_ATOMIC))) {
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+ event->action = holdkey;
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+ event->button_name = "reset";
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+
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+ INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
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+ schedule_work(&event->wq);
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+ }
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+
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+ return IRQ_HANDLED;
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+}
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+
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+static irqreturn_t fsg_unplug_button_handler(int irq, void *dev_id)
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+{
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+ int holdkey;
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+
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+ //check button status
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+ gpio_line_get(FSG_UB_GPIO, &holdkey);
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+
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+ struct event_t *event;
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+ //create event
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+ if ((event = (struct event_t *)kzalloc (sizeof(struct event_t), GFP_ATOMIC))) {
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+ event->action = holdkey;
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+ event->button_name = "unplug";
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+
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+ INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
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+ schedule_work(&event->wq);
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+ }
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+
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+ return IRQ_HANDLED;
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+}
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+
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+static int __init fsg_buttons_init(void)
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+{
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+ if (!(machine_is_fsg()))
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+ return;
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+
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+ /* Configure interrupt input for SYNC button */
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+ set_irq_type(FSG_SB_IRQ, IRQT_BOTHEDGE);
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+ if (request_irq(FSG_SB_IRQ, &fsg_sync_button_handler, IRQF_DISABLED, "SYNC", NULL) < 0) {
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+ printk(KERN_DEBUG "SYNC button IRQ %d not available\n", FSG_SB_IRQ);
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+ return -EIO;
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+ }
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+ else
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+ printk("SYNC button registered on IRQ%d\n", FSG_SB_IRQ);
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+
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+ /* Configure interrupt input for RESET button */
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+ set_irq_type(FSG_RB_IRQ, IRQT_BOTHEDGE);
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+ if (request_irq(FSG_RB_IRQ, &fsg_reset_button_handler, IRQF_DISABLED, "RESET", NULL) < 0) {
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+ printk(KERN_DEBUG "RESET button IRQ %d not available\n", FSG_RB_IRQ);
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+ return -EIO;
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+ }
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+ else
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+ printk("RESET button registered on IRQ%d\n", FSG_RB_IRQ);
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+
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+ /* Configure interrupt input for UNPLUG button */
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+ set_irq_type(FSG_UB_IRQ, IRQT_BOTHEDGE);
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+ if (request_irq(FSG_UB_IRQ, &fsg_unplug_button_handler, IRQF_DISABLED, "RESET", NULL) < 0) {
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+ printk(KERN_DEBUG "UNPLUG button IRQ %d not available\n", FSG_UB_IRQ);
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+ return -EIO;
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+ }
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+ else
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+ printk("UNPLUG button registered on IRQ%d\n", FSG_UB_IRQ);
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+
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+ return 0;
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+}
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+
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+static void __exit fsg_buttons_exit(void)
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+{
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+ if (!(machine_is_fsg()))
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+ return;
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+
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+ free_irq(FSG_SB_IRQ, NULL);
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+ free_irq(FSG_RB_IRQ, NULL);
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+ free_irq(FSG_UB_IRQ, NULL);
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+}
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+
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+module_init(fsg_buttons_init);
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+module_exit(fsg_buttons_exit);
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+
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+MODULE_AUTHOR("Zintis Petersons <Zintis.Petersons@e-mail.lv>");
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+MODULE_DESCRIPTION("FSG buttons driver");
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+MODULE_LICENSE("GPL");
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diff -Nur linux-2.6.21.6-orig/arch/arm/mach-ixp4xx/Makefile linux-2.6.21.6/arch/arm/mach-ixp4xx/Makefile
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--- linux-2.6.21.6-orig/arch/arm/mach-ixp4xx/Makefile 2007-10-12 14:34:18.000000000 +0200
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+++ linux-2.6.21.6/arch/arm/mach-ixp4xx/Makefile 2007-10-12 22:34:06.000000000 +0200
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@@ -30,7 +30,7 @@
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obj-$(CONFIG_MACH_NSLU2) += nslu2-setup.o nslu2-power.o
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obj-$(CONFIG_MACH_NAS100D) += nas100d-setup.o nas100d-power.o
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obj-$(CONFIG_MACH_DSMG600) += dsmg600-setup.o dsmg600-power.o
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-obj-$(CONFIG_MACH_FSG) += fsg-setup.o
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+obj-$(CONFIG_MACH_FSG) += fsg-setup.o fsg-power.o
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obj-$(CONFIG_MACH_GATEWAY7001) += gateway7001-setup.o
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obj-$(CONFIG_MACH_WG302V2) += wg302v2-setup.o
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obj-$(CONFIG_MACH_PRONGHORNMETRO) += pronghornmetro-setup.o
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