diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-02-04 15:29:53 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-02-04 15:29:53 -0800 |
commit | 9ef9dc69d4167276c04590d67ee55de8380bc1ad (patch) | |
tree | f0afd03cd9184eda2fe14c41f09daec79a62682e /arch/arm/mach-ixp4xx/dsmg600-power.c | |
parent | 2c8296f8cf0ec40867965dddef3dfe92f73b38f4 (diff) | |
parent | 0d899e1b0000ddf78a75d7dcf9a9029d6f7f8091 (diff) |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
[ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
[ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
[ARM] 4820/1: RealView: Select the timer IRQ at run-time
[ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
[ARM] 4818/1: RealView: Add core-tile detection
[ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
[ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
[ARM] 4815/1: RealView: Add clockevents suport for the local timers
[ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
[ARM] 4813/1: Add SMP helper functions for clockevents support
[ARM] 4812/1: RealView: clockevents support for the RealView platforms
[ARM] 4811/1: RealView: clocksource support for the RealView platforms
[ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags
[ARM] 4798/1: pcm027: fix missing header file
[ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1
[ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h
[ARM] pxa: introduce sysdev for pxa3xx static memory controller
[ARM] pxa: add preliminary suspend/resume code for pxa3xx
[ARM] pxa: introduce sysdev for GPIO register saving/restoring
[ARM] pxa: introduce sysdev for IRQ register saving/restoring
...
Diffstat (limited to 'arch/arm/mach-ixp4xx/dsmg600-power.c')
-rw-r--r-- | arch/arm/mach-ixp4xx/dsmg600-power.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/arch/arm/mach-ixp4xx/dsmg600-power.c b/arch/arm/mach-ixp4xx/dsmg600-power.c deleted file mode 100644 index 34717872d07..00000000000 --- a/arch/arm/mach-ixp4xx/dsmg600-power.c +++ /dev/null @@ -1,125 +0,0 @@ -/* - * arch/arm/mach-ixp4xx/dsmg600-power.c - * - * DSM-G600 Power/Reset driver - * Author: Michael Westerhof <mwester@dls.net> - * - * Based on nslu2-power.c - * Copyright (C) 2005 Tower Technologies - * Author: Alessandro Zummo <a.zummo@towertech.it> - * - * which was based on nslu2-io.c - * Copyright (C) 2004 Karen Spearel - * - * Maintainers: http://www.nslu2-linux.org/ - * - * 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/interrupt.h> -#include <linux/irq.h> -#include <linux/jiffies.h> -#include <linux/timer.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; - -/* Must hold the button down for at least this many counts to be processed */ -#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */ - -static void dsmg600_power_handler(unsigned long data); -static DEFINE_TIMER(dsmg600_power_timer, dsmg600_power_handler, 0, 0); - -static void dsmg600_power_handler(unsigned long data) -{ - /* This routine is called twice per second to check the - * state of the power button. - */ - - if (*IXP4XX_GPIO_GPINR & DSMG600_PB_BM) { - - /* IO Pin is 1 (button pushed) */ - 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. - */ - ctrl_alt_del(); - - /* Change the state of the power LED to "blink" */ - gpio_line_set(DSMG600_LED_PWR_GPIO, IXP4XX_GPIO_LOW); - } - power_button_countdown--; - - } else { - power_button_countdown = PBUTTON_HOLDDOWN_COUNT; - } - - mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500)); -} - -static irqreturn_t dsmg600_reset_handler(int irq, void *dev_id) -{ - /* This is the paper-clip reset, it shuts the machine down directly. */ - machine_power_off(); - - return IRQ_HANDLED; -} - -static int __init dsmg600_power_init(void) -{ - if (!(machine_is_dsmg600())) - return 0; - - if (request_irq(DSMG600_RB_IRQ, &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); - - return -EIO; - } - - /* The power button on the D-Link DSM-G600 is on GPIO 15, but - * it cannot handle interrupts on that GPIO line. So we'll - * have to poll it with a kernel timer. - */ - - /* Make sure that the power button GPIO is set up as an input */ - gpio_line_config(DSMG600_PB_GPIO, IXP4XX_GPIO_IN); - - /* Set the initial value for the power button IRQ handler */ - power_button_countdown = PBUTTON_HOLDDOWN_COUNT; - - mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500)); - - return 0; -} - -static void __exit dsmg600_power_exit(void) -{ - if (!(machine_is_dsmg600())) - return; - - del_timer_sync(&dsmg600_power_timer); - - free_irq(DSMG600_RB_IRQ, NULL); -} - -module_init(dsmg600_power_init); -module_exit(dsmg600_power_exit); - -MODULE_AUTHOR("Michael Westerhof <mwester@dls.net>"); -MODULE_DESCRIPTION("DSM-G600 Power/Reset driver"); -MODULE_LICENSE("GPL"); |