diff options
Diffstat (limited to 'drivers/base/power/resume.c')
-rw-r--r-- | drivers/base/power/resume.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c deleted file mode 100644 index 00fd84a..0000000 --- a/drivers/base/power/resume.c +++ /dev/null @@ -1,149 +0,0 @@ -/* - * resume.c - Functions for waking devices up. - * - * Copyright (c) 2003 Patrick Mochel - * Copyright (c) 2003 Open Source Development Labs - * - * This file is released under the GPLv2 - * - */ - -#include <linux/device.h> -#include <linux/resume-trace.h> -#include "../base.h" -#include "power.h" - - -/** - * resume_device - Restore state for one device. - * @dev: Device. - * - */ - -int resume_device(struct device * dev) -{ - int error = 0; - - TRACE_DEVICE(dev); - TRACE_RESUME(0); - - down(&dev->sem); - - if (dev->bus && dev->bus->resume) { - dev_dbg(dev,"resuming\n"); - error = dev->bus->resume(dev); - } - - if (!error && dev->type && dev->type->resume) { - dev_dbg(dev,"resuming\n"); - error = dev->type->resume(dev); - } - - if (!error && dev->class && dev->class->resume) { - dev_dbg(dev,"class resume\n"); - error = dev->class->resume(dev); - } - - up(&dev->sem); - - TRACE_RESUME(error); - return error; -} - - -static int resume_device_early(struct device * dev) -{ - int error = 0; - - TRACE_DEVICE(dev); - TRACE_RESUME(0); - if (dev->bus && dev->bus->resume_early) { - dev_dbg(dev,"EARLY resume\n"); - error = dev->bus->resume_early(dev); - } - TRACE_RESUME(error); - return error; -} - -/* - * Resume the devices that have either not gone through - * the late suspend, or that did go through it but also - * went through the early resume - */ -void dpm_resume(void) -{ - mutex_lock(&dpm_list_mtx); - while(!list_empty(&dpm_off)) { - struct list_head * entry = dpm_off.next; - struct device * dev = to_device(entry); - - get_device(dev); - list_move_tail(entry, &dpm_active); - - mutex_unlock(&dpm_list_mtx); - resume_device(dev); - mutex_lock(&dpm_list_mtx); - put_device(dev); - } - mutex_unlock(&dpm_list_mtx); -} - - -/** - * device_resume - Restore state of each device in system. - * - * Walk the dpm_off list, remove each entry, resume the device, - * then add it to the dpm_active list. - */ - -void device_resume(void) -{ - might_sleep(); - mutex_lock(&dpm_mtx); - dpm_resume(); - mutex_unlock(&dpm_mtx); -} - -EXPORT_SYMBOL_GPL(device_resume); - - -/** - * dpm_power_up - Power on some devices. - * - * Walk the dpm_off_irq list and power each device up. This - * is used for devices that required they be powered down with - * interrupts disabled. As devices are powered on, they are moved - * to the dpm_active list. - * - * Interrupts must be disabled when calling this. - */ - -void dpm_power_up(void) -{ - while(!list_empty(&dpm_off_irq)) { - struct list_head * entry = dpm_off_irq.next; - struct device * dev = to_device(entry); - - list_move_tail(entry, &dpm_off); - resume_device_early(dev); - } -} - - -/** - * device_power_up - Turn on all devices that need special attention. - * - * Power on system devices then devices that required we shut them down - * with interrupts disabled. - * Called with interrupts disabled. - */ - -void device_power_up(void) -{ - sysdev_resume(); - dpm_power_up(); -} - -EXPORT_SYMBOL_GPL(device_power_up); - - |