mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 06:57:57 +00:00
126 lines
3.8 KiB
Diff
126 lines
3.8 KiB
Diff
From 67e494e3e03ef807255f084800d8658b89ff5fec Mon Sep 17 00:00:00 2001
|
|
From: Rod Whitby <rod@whitby.id.au>
|
|
Date: Tue, 29 Jan 2008 10:00:25 +1030
|
|
Subject: ixp4xx: Button updates for the dsmg600 board (Patch #4769)
|
|
|
|
* Remove the superfluous declaration of ctrl_alt_del().
|
|
* Convert GPIO and IRQ handling to use the <asm/gpio.h> api.
|
|
* Perform the reset on the release of the power button, so that
|
|
NAS devices which have been set to auto-power-on (by solder
|
|
bridging the power button) do not continuously power cycle.
|
|
* Remove all superflous constants from dsmg600.h
|
|
|
|
Signed-off-by: Rod Whitby <rod@whitby.id.au>
|
|
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
|
|
|
|
PATCH FOLLOWS
|
|
KernelVersion: 2.6.24-git5
|
|
|
|
diff --git a/arch/arm/mach-ixp4xx/dsmg600-power.c b/arch/arm/mach-ixp4xx/dsmg600-power.c
|
|
index 3471787..db63987 100644
|
|
--- a/arch/arm/mach-ixp4xx/dsmg600-power.c
|
|
+++ b/arch/arm/mach-ixp4xx/dsmg600-power.c
|
|
@@ -26,14 +26,13 @@
|
|
#include <linux/jiffies.h>
|
|
#include <linux/timer.h>
|
|
|
|
+#include <asm/gpio.h>
|
|
#include <asm/mach-types.h>
|
|
|
|
-extern void ctrl_alt_del(void);
|
|
-
|
|
/* This is used to make sure the power-button pusher is serious. The button
|
|
* must be held until the value of this counter reaches zero.
|
|
*/
|
|
-static volatile int power_button_countdown;
|
|
+static int power_button_countdown;
|
|
|
|
/* Must hold the button down for at least this many counts to be processed */
|
|
#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
|
|
@@ -47,22 +46,27 @@ static void dsmg600_power_handler(unsigned long data)
|
|
* state of the power button.
|
|
*/
|
|
|
|
- if (*IXP4XX_GPIO_GPINR & DSMG600_PB_BM) {
|
|
+ if (gpio_get_value(DSMG600_PB_GPIO)) {
|
|
|
|
/* IO Pin is 1 (button pushed) */
|
|
+ if (power_button_countdown > 0)
|
|
+ power_button_countdown--;
|
|
+
|
|
+ } else {
|
|
+
|
|
+ /* Done on button release, to allow for auto-power-on mods. */
|
|
if (power_button_countdown == 0) {
|
|
- /* Signal init to do the ctrlaltdel action, this will bypass
|
|
- * init if it hasn't started and do a kernel_restart.
|
|
+ /* Signal init to do the ctrlaltdel action,
|
|
+ * this will bypass init if it hasn't started
|
|
+ * and do a kernel_restart.
|
|
*/
|
|
ctrl_alt_del();
|
|
|
|
/* Change the state of the power LED to "blink" */
|
|
gpio_line_set(DSMG600_LED_PWR_GPIO, IXP4XX_GPIO_LOW);
|
|
+ } else {
|
|
+ power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
|
|
}
|
|
- power_button_countdown--;
|
|
-
|
|
- } else {
|
|
- power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
|
|
}
|
|
|
|
mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500));
|
|
@@ -81,12 +85,12 @@ static int __init dsmg600_power_init(void)
|
|
if (!(machine_is_dsmg600()))
|
|
return 0;
|
|
|
|
- if (request_irq(DSMG600_RB_IRQ, &dsmg600_reset_handler,
|
|
+ if (request_irq(gpio_to_irq(DSMG600_RB_GPIO), &dsmg600_reset_handler,
|
|
IRQF_DISABLED | IRQF_TRIGGER_LOW, "DSM-G600 reset button",
|
|
NULL) < 0) {
|
|
|
|
printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
|
|
- DSMG600_RB_IRQ);
|
|
+ gpio_to_irq(DSMG600_RB_GPIO));
|
|
|
|
return -EIO;
|
|
}
|
|
@@ -114,7 +118,7 @@ static void __exit dsmg600_power_exit(void)
|
|
|
|
del_timer_sync(&dsmg600_power_timer);
|
|
|
|
- free_irq(DSMG600_RB_IRQ, NULL);
|
|
+ free_irq(gpio_to_irq(DSMG600_RB_GPIO), NULL);
|
|
}
|
|
|
|
module_init(dsmg600_power_init);
|
|
diff --git a/include/asm-arm/arch-ixp4xx/dsmg600.h b/include/asm-arm/arch-ixp4xx/dsmg600.h
|
|
index a19605a..b7673e1 100644
|
|
--- a/include/asm-arm/arch-ixp4xx/dsmg600.h
|
|
+++ b/include/asm-arm/arch-ixp4xx/dsmg600.h
|
|
@@ -40,18 +40,13 @@
|
|
/* Buttons */
|
|
|
|
#define DSMG600_PB_GPIO 15 /* power button */
|
|
-#define DSMG600_PB_BM (1L << DSMG600_PB_GPIO)
|
|
-
|
|
#define DSMG600_RB_GPIO 3 /* reset button */
|
|
|
|
-#define DSMG600_RB_IRQ IRQ_IXP4XX_GPIO3
|
|
+/* Power control */
|
|
|
|
#define DSMG600_PO_GPIO 2 /* power off */
|
|
|
|
/* LEDs */
|
|
|
|
#define DSMG600_LED_PWR_GPIO 0
|
|
-#define DSMG600_LED_PWR_BM (1L << DSMG600_LED_PWR_GPIO)
|
|
-
|
|
#define DSMG600_LED_WLAN_GPIO 14
|
|
-#define DSMG600_LED_WLAN_BM (1L << DSMG600_LED_WLAN_GPIO)
|
|
--
|
|
1.5.2.5
|
|
|