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yaml
---
r: 82931
b: refs/heads/master
c: 2bea801
h: refs/heads/master
i:
  82929: 5ffe34d
  82927: 4bcba6e
v: v3
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Rod Whitby authored and Russell King committed Feb 4, 2008
1 parent 882c997 commit ef67b83
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Showing 3 changed files with 19 additions and 20 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 14645ebabd96d29f3050ea78a6417b6653bc48cf
refs/heads/master: 2bea80187f6218ed8b5c1e1280220b1c53d8dd05
30 changes: 17 additions & 13 deletions trunk/arch/arm/mach-ixp4xx/dsmg600-power.c
Original file line number Diff line number Diff line change
Expand Up @@ -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 */
Expand All @@ -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));
Expand All @@ -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;
}
Expand Down Expand Up @@ -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);
Expand Down
7 changes: 1 addition & 6 deletions trunk/include/asm-arm/arch-ixp4xx/dsmg600.h
Original file line number Diff line number Diff line change
Expand Up @@ -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)

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