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ixp4xx: New patch to support FSG-3 buttons

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SVN-Revision: 9276
This commit is contained in:
Rod Whitby 2007-10-13 00:25:48 +00:00
parent cd466ecb18
commit ce3592c5ef
1 changed files with 184 additions and 0 deletions
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184
target/linux/ixp4xx/patches/997-fsg3_buttons.patch Normal file
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@ -0,0 +1,184 @@
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
--- linux-2.6.21.6-orig/arch/arm/mach-ixp4xx/fsg-power.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.6/arch/arm/mach-ixp4xx/fsg-power.c 2007-10-12 22:32:27.000000000 +0200
@@ -0,0 +1,168 @@
+/*
+ * arch/arm/mach-ixp4xx/fsg-power.c
+ *
+ * FSG buttons driver
+ *
+ * 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <asm/mach-types.h>
+#include <linux/kernel.h>
+
+struct event_t {
+ struct work_struct wq;
+ char *button_name;
+ int action;
+};
+
+static void hotplug_button(struct event_t *event)
+{
+ static char buf[128];
+ char *argv[3], *envp[6], *action;
+ int i;
+
+ i = 0;
+ argv[i++] = "/sbin/hotplug";
+ argv[i++] = "button";
+ argv[i] = 0;
+
+ i = 0;
+ /* minimal command environment */
+ envp [i++] = "HOME=/";
+ envp [i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
+ envp [i++] = "SUBSYSTEM=button";
+
+ snprintf(buf, 128, "BUTTON=%s", event->button_name);
+ envp [i++] = buf;
+
+ action = event->action ? "released" : "pressed";
+ snprintf(buf, 128, "ACTION=%s", action);
+ envp [i++] = buf;
+
+ envp [i] = 0;
+
+ // create hotplug event
+ call_usermodehelper (argv[0], argv, envp, 0);
+
+ //destroy event structure
+ kfree(event);
+}
+
+static irqreturn_t fsg_sync_button_handler(int irq, void *dev_id)
+{
+ int holdkey;
+
+ //check button status
+ gpio_line_get(FSG_SB_GPIO, &holdkey);
+
+ struct event_t *event;
+ //create event
+ if ((event = (struct event_t *)kzalloc (sizeof(struct event_t), GFP_ATOMIC))) {
+ event->action = holdkey;
+ event->button_name = "sync";
+
+ INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
+ schedule_work(&event->wq);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t fsg_reset_button_handler(int irq, void *dev_id)
+{
+ int holdkey;
+
+ //check button status
+ gpio_line_get(FSG_RB_GPIO, &holdkey);
+
+ struct event_t *event;
+ //create event
+ if ((event = (struct event_t *)kzalloc (sizeof(struct event_t), GFP_ATOMIC))) {
+ event->action = holdkey;
+ event->button_name = "reset";
+
+ INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
+ schedule_work(&event->wq);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t fsg_unplug_button_handler(int irq, void *dev_id)
+{
+ int holdkey;
+
+ //check button status
+ gpio_line_get(FSG_UB_GPIO, &holdkey);
+
+ struct event_t *event;
+ //create event
+ if ((event = (struct event_t *)kzalloc (sizeof(struct event_t), GFP_ATOMIC))) {
+ event->action = holdkey;
+ event->button_name = "unplug";
+
+ INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
+ schedule_work(&event->wq);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int __init fsg_buttons_init(void)
+{
+ if (!(machine_is_fsg()))
+ return;
+
+ /* Configure interrupt input for SYNC button */
+ set_irq_type(FSG_SB_IRQ, IRQT_BOTHEDGE);
+ if (request_irq(FSG_SB_IRQ, &fsg_sync_button_handler, IRQF_DISABLED, "SYNC", NULL) < 0) {
+ printk(KERN_DEBUG "SYNC button IRQ %d not available\n", FSG_SB_IRQ);
+ return -EIO;
+ }
+ else
+ printk("SYNC button registered on IRQ%d\n", FSG_SB_IRQ);
+
+ /* Configure interrupt input for RESET button */
+ set_irq_type(FSG_RB_IRQ, IRQT_BOTHEDGE);
+ if (request_irq(FSG_RB_IRQ, &fsg_reset_button_handler, IRQF_DISABLED, "RESET", NULL) < 0) {
+ printk(KERN_DEBUG "RESET button IRQ %d not available\n", FSG_RB_IRQ);
+ return -EIO;
+ }
+ else
+ printk("RESET button registered on IRQ%d\n", FSG_RB_IRQ);
+
+ /* Configure interrupt input for UNPLUG button */
+ set_irq_type(FSG_UB_IRQ, IRQT_BOTHEDGE);
+ if (request_irq(FSG_UB_IRQ, &fsg_unplug_button_handler, IRQF_DISABLED, "RESET", NULL) < 0) {
+ printk(KERN_DEBUG "UNPLUG button IRQ %d not available\n", FSG_UB_IRQ);
+ return -EIO;
+ }
+ else
+ printk("UNPLUG button registered on IRQ%d\n", FSG_UB_IRQ);
+
+ return 0;
+}
+
+static void __exit fsg_buttons_exit(void)
+{
+ if (!(machine_is_fsg()))
+ return;
+
+ free_irq(FSG_SB_IRQ, NULL);
+ free_irq(FSG_RB_IRQ, NULL);
+ free_irq(FSG_UB_IRQ, NULL);
+}
+
+module_init(fsg_buttons_init);
+module_exit(fsg_buttons_exit);
+
+MODULE_AUTHOR("Zintis Petersons <Zintis.Petersons@e-mail.lv>");
+MODULE_DESCRIPTION("FSG buttons driver");
+MODULE_LICENSE("GPL");
diff -Nur linux-2.6.21.6-orig/arch/arm/mach-ixp4xx/Makefile linux-2.6.21.6/arch/arm/mach-ixp4xx/Makefile
--- linux-2.6.21.6-orig/arch/arm/mach-ixp4xx/Makefile 2007-10-12 14:34:18.000000000 +0200
+++ linux-2.6.21.6/arch/arm/mach-ixp4xx/Makefile 2007-10-12 22:34:06.000000000 +0200
@@ -30,7 +30,7 @@
obj-$(CONFIG_MACH_NSLU2) += nslu2-setup.o nslu2-power.o
obj-$(CONFIG_MACH_NAS100D) += nas100d-setup.o nas100d-power.o
obj-$(CONFIG_MACH_DSMG600) += dsmg600-setup.o dsmg600-power.o
-obj-$(CONFIG_MACH_FSG) += fsg-setup.o
+obj-$(CONFIG_MACH_FSG) += fsg-setup.o fsg-power.o
obj-$(CONFIG_MACH_GATEWAY7001) += gateway7001-setup.o
obj-$(CONFIG_MACH_WG302V2) += wg302v2-setup.o
obj-$(CONFIG_MACH_PRONGHORNMETRO) += pronghornmetro-setup.o