/**
* hibernation_restore - Quiesce devices and restore from a hibernation image.
* @platform_mode: If set, use platform driver to prepare for the transition.
*
* This routine must be called with pm_mutex held. If it is successful, control
* reappears in the restored target kernel in hibernation_snapshot().
*/
int hibernation_restore(int platform_mode)
{
int error;
pm_prepare_console();
suspend_console();
ftrace_stop();
pm_restrict_gfp_mask();
error = dpm_suspend_start(PMSG_QUIESCE);
if (!error) {
error = resume_target_kernel(platform_mode);
/*
* The above should either succeed and jump to the new kernel,
* or return with an error. Otherwise things are just
* undefined, so let's be paranoid.
*/
BUG_ON(!error);
}
dpm_resume_end(PMSG_RECOVER);
pm_restore_gfp_mask();
ftrace_start();
resume_console();
pm_restore_console();
return error;
}
/**
* suspend_devices_and_enter - Suspend devices and enter system sleep state.
* @state: System sleep state to enter.
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
bool wakeup = false;
if (!suspend_ops)
return -ENOSYS;
trace_machine_suspend(state);
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
do {
error = suspend_enter(state, &wakeup);
} while (!error && !wakeup
&& suspend_ops->suspend_again && suspend_ops->suspend_again());
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
#ifdef CONFIG_MACH_LGE_325_BOARD_VZW
#ifdef CONFIG_LGE_LOG_SERVICE
if(sleep_enter == 1){
struct timespec ts;
struct rtc_time tm;
getnstimeofday(&ts);
rtc_time_to_tm(ts.tv_sec, &tm);
printk(KERN_UTC_WAKEUP "%d-%02d-%02d %02d:%02d:%02d.%06lu\n",
tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec/1000);
sleep_enter = 0;
}
#endif
#endif
suspend_test_finish("resume devices");
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
trace_machine_suspend(PWR_EVENT_EXIT);
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
static inline int snapshot_restore(int platform_suspend)
{
int error;
mutex_lock(&pm_mutex);
pm_prepare_console();
if (platform_suspend) {
error = platform_prepare();
if (error)
goto Finish;
}
suspend_console();
error = device_suspend(PMSG_PRETHAW);
if (error)
goto Resume_devices;
error = disable_nonboot_cpus();
if (!error)
error = swsusp_resume();
enable_nonboot_cpus();
Resume_devices:
if (platform_suspend)
platform_finish();
device_resume();
resume_console();
Finish:
pm_restore_console();
mutex_unlock(&pm_mutex);
return error;
}
static bool s3c_cm_suspend_again(void)
{
bool ret;
int i = 0;
if (!is_charger_manager_active())
return false;
while (s3c_cm_devices && s3c_cm_devices[i]) {
pm_generic_resume(s3c_cm_devices[i]);
i++;
}
if (s3c_cm_resume_console)
resume_console();
ret = cm_suspend_again();
if (s3c_cm_resume_console)
suspend_console();
while (i > 0) {
i--;
pm_generic_suspend(s3c_cm_devices[i]);
}
return ret;
}
/**
* suspend_devices_and_enter - suspend devices and enter the desired system sleep
* state.
* @state: state to enter
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
if (!pm_ops)
return -ENOSYS;
if (pm_ops->set_target) {
error = pm_ops->set_target(state);
if (error)
return error;
}
suspend_console();
error = device_suspend(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "Some devices failed to suspend\n");
goto Resume_console;
}
if (pm_ops->prepare) {
error = pm_ops->prepare(state);
if (error)
goto Resume_devices;
}
error = disable_nonboot_cpus();
if (!error)
suspend_enter(state);
enable_nonboot_cpus();
pm_finish(state);
Resume_devices:
device_resume();
Resume_console:
resume_console();
return error;
}
/**
* suspend_devices_and_enter - Suspend devices and enter system sleep state.
* @state: System sleep state to enter.
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
bool wakeup = false;
if (!suspend_ops)
return -ENOSYS;
trace_machine_suspend(state);
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
ftrace_stop();
suspend_test_start();
/* time stamp for start of device suspend */
time_stamp_in_suspend_flow(DEV_SUS, true);
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
do {
error = suspend_enter(state, &wakeup);
} while (!error && !wakeup
&& suspend_ops->suspend_again && suspend_ops->suspend_again());
if (wakeup)
error = -EBUSY;
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
/* time stamp for end of device resume */
time_stamp_in_suspend_flow(DEV_RES, false);
suspend_test_finish("resume devices");
ftrace_start();
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
trace_machine_suspend(PWR_EVENT_EXIT);
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
/**
* hibernation_snapshot - Quiesce devices and create a hibernation image.
* @platform_mode: If set, use platform driver to prepare for the transition.
*
* This routine must be called with pm_mutex held.
*/
int hibernation_snapshot(int platform_mode)
{
pm_message_t msg = PMSG_RECOVER;
int error;
error = platform_begin(platform_mode);
if (error)
goto Close;
error = dpm_prepare(PMSG_FREEZE);
if (error)
goto Complete_devices;
/* Preallocate image memory before shutting down devices. */
error = hibernate_preallocate_memory();
if (error)
goto Complete_devices;
suspend_console();
ftrace_stop();
pm_restrict_gfp_mask();
error = dpm_suspend(PMSG_FREEZE);
if (error)
goto Recover_platform;
if (hibernation_test(TEST_DEVICES))
goto Recover_platform;
error = create_image(platform_mode);
/*
* Control returns here (1) after the image has been created or the
* image creation has failed and (2) after a successful restore.
*/
Resume_devices:
/* We may need to release the preallocated image pages here. */
if (error || !in_suspend)
swsusp_free();
msg = in_suspend ? (error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE;
dpm_resume(msg);
if (error || !in_suspend)
pm_restore_gfp_mask();
ftrace_start();
resume_console();
Complete_devices:
dpm_complete(msg);
Close:
platform_end(platform_mode);
return error;
Recover_platform:
platform_recover(platform_mode);
goto Resume_devices;
}
/**
* suspend_devices_and_enter - suspend devices and enter the desired system
* sleep state.
* @state: state to enter
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error, ftrace_save;
if (!suspend_ops)
return -ENOSYS;
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
ftrace_save = __ftrace_enabled_save();
suspend_test_start();
error = device_suspend(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
if (suspend_ops->prepare) {
error = suspend_ops->prepare();
if (error)
goto Resume_devices;
}
if (suspend_test(TEST_PLATFORM))
goto Finish;
error = disable_nonboot_cpus();
if (!error && !suspend_test(TEST_CPUS))
suspend_enter(state);
enable_nonboot_cpus();
Finish:
if (suspend_ops->finish)
suspend_ops->finish();
Resume_devices:
suspend_test_start();
device_resume(PMSG_RESUME);
suspend_test_finish("resume devices");
__ftrace_enabled_restore(ftrace_save);
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
int hibernation_platform_enter(void)
{
int error;
if (!hibernation_ops)
return -ENOSYS;
/*
* We have cancelled the power transition by running
* hibernation_ops->finish() before saving the image, so we should let
* the firmware know that we're going to enter the sleep state after all
*/
error = hibernation_ops->begin();
if (error)
goto Close;
suspend_console();
error = device_suspend(PMSG_HIBERNATE);
if (error) {
if (hibernation_ops->recover)
hibernation_ops->recover();
goto Resume_devices;
}
error = hibernation_ops->prepare();
if (error)
goto Resume_devices;
error = disable_nonboot_cpus();
if (error)
goto Finish;
device_pm_lock();
local_irq_disable();
error = device_power_down(PMSG_HIBERNATE);
if (!error) {
hibernation_ops->enter();
/* We should never get here */
while (1);
}
local_irq_enable();
device_pm_unlock();
/*
* We don't need to reenable the nonboot CPUs or resume consoles, since
* the system is going to be halted anyway.
*/
Finish:
hibernation_ops->finish();
Resume_devices:
device_resume(PMSG_RESTORE);
resume_console();
Close:
hibernation_ops->end();
return error;
}
/**
* suspend_devices_and_enter - Suspend devices and enter system sleep state.
* @state: System sleep state to enter.
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
bool wakeup = false;
if (need_suspend_ops(state) && !suspend_ops)
return -ENOSYS;
trace_machine_suspend(state);
if (need_suspend_ops(state) && suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
} else if (state == PM_SUSPEND_FREEZE && freeze_ops && freeze_ops->begin) {
error = freeze_ops->begin();
if (error)
goto Close;
}
suspend_console();
ftrace_stop();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
log_suspend_abort_reason("Some devices failed to suspend");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
do {
error = suspend_enter(state, &wakeup);
} while (!error && !wakeup && need_suspend_ops(state)
&& platform_suspend_again());
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
suspend_test_finish("resume devices");
ftrace_start();
resume_console();
Close:
if (need_suspend_ops(state) && suspend_ops->end)
suspend_ops->end();
else if (state == PM_SUSPEND_FREEZE && freeze_ops && freeze_ops->end)
freeze_ops->end();
trace_machine_suspend(PWR_EVENT_EXIT);
return error;
Recover_platform:
if (need_suspend_ops(state) && suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
/**
* suspend_devices_and_enter - Suspend devices and enter system sleep state.
* @state: System sleep state to enter.
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
bool wakeup = false;
if (!suspend_ops)
return -ENOSYS;
trace_machine_suspend(state);
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
/*OPPO 2012-11-27 zhzhyon Add for reason*/
#ifdef CONFIG_VENDOR_EDIT
if(has_wake_lock(WAKE_LOCK_SUSPEND))
{
goto Resume_devices;
}
#endif
/*OPPO 2012-11-27 zhzhyon Add end*/
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
do {
error = suspend_enter(state, &wakeup);
} while (!error && !wakeup
&& suspend_ops->suspend_again && suspend_ops->suspend_again());
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
suspend_test_finish("resume devices");
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
trace_machine_suspend(PWR_EVENT_EXIT);
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
int pm_suspend_disk(void)
{
int error;
error = prepare_processes();
if (error)
return error;
if (pm_disk_mode == PM_DISK_TESTPROC)
return 0;
suspend_console();
error = device_suspend(PMSG_FREEZE);
if (error) {
resume_console();
printk("Some devices failed to suspend\n");
goto Thaw;
}
if (pm_disk_mode == PM_DISK_TEST) {
printk("swsusp debug: Waiting for 5 seconds.\n");
mdelay(5000);
goto Done;
}
pr_debug("PM: snapshotting memory.\n");
in_suspend = 1;
if ((error = swsusp_suspend()))
goto Done;
if (in_suspend) {
device_resume();
resume_console();
pr_debug("PM: writing image.\n");
error = swsusp_write();
if (!error)
power_down(pm_disk_mode);
else {
swsusp_free();
goto Thaw;
}
} else {
pr_debug("PM: Image restored successfully.\n");
}
swsusp_free();
Done:
device_resume();
resume_console();
Thaw:
unprepare_processes();
return error;
}
int hibernation_snapshot(int platform_mode)
{
int error;
/* Free memory before shutting down devices. */
error = swsusp_shrink_memory();
if (error)
return error;
error = platform_begin(platform_mode);
if (error)
goto Close;
suspend_console();
error = device_suspend(PMSG_FREEZE);
if (error)
goto Recover_platform;
if (hibernation_test(TEST_DEVICES))
goto Recover_platform;
error = platform_pre_snapshot(platform_mode);
if (error || hibernation_test(TEST_PLATFORM))
goto Finish;
error = disable_nonboot_cpus();
if (!error) {
if (hibernation_test(TEST_CPUS))
goto Enable_cpus;
if (hibernation_testmode(HIBERNATION_TEST))
goto Enable_cpus;
error = create_image(platform_mode);
/* Control returns here after successful restore */
}
Enable_cpus:
enable_nonboot_cpus();
Finish:
platform_finish(platform_mode);
Resume_devices:
device_resume(in_suspend ?
(error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
resume_console();
Close:
platform_end(platform_mode);
return error;
Recover_platform:
platform_recover(platform_mode);
goto Resume_devices;
}
/**
* suspend_devices_and_enter - Suspend devices and enter system sleep state.
* @state: System sleep state to enter.
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
bool wakeup = false;
if (need_suspend_ops(state) && !suspend_ops)
return -ENOSYS;
#ifdef CONFIG_TOI
drop_pagecache();
#endif
trace_machine_suspend(state);
if (need_suspend_ops(state) && suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
ftrace_stop();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
do {
error = suspend_enter(state, &wakeup);
} while (!error && !wakeup && need_suspend_ops(state)
&& suspend_ops->suspend_again && suspend_ops->suspend_again());
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
suspend_test_finish("resume devices");
ftrace_start();
resume_console();
Close:
if (need_suspend_ops(state) && suspend_ops->end)
suspend_ops->end();
trace_machine_suspend(PWR_EVENT_EXIT);
return error;
Recover_platform:
if (need_suspend_ops(state) && suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
/**
* suspend_devices_and_enter - suspend devices and enter the desired system
* sleep state.
* @state: state to enter
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
gfp_t saved_mask;
struct device l3_dev;
if (!suspend_ops)
return -ENOSYS;
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
//omap_pm_set_min_bus_tput(&l3_dev, OCP_INITIATOR_AGENT, 100 * 1000 * 4); // sookyoung.kim
suspend_enter(state);
//omap_pm_set_min_bus_tput(&l3_dev, OCP_INITIATOR_AGENT, 200 * 1000 * 4); // sookyoung.kim
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
// LGE_UPDATE_S
#if defined(CONFIG_WAKE_IRQ_PRINT)
wakeup_irq_record_print();
#endif
// LGE_UPDATE_E
suspend_test_finish("resume devices");
set_gfp_allowed_mask(saved_mask);
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
/**
* suspend_devices_and_enter - Suspend devices and enter system sleep state.
* @state: System sleep state to enter.
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
bool wakeup = false;
if (need_suspend_ops(state) && !suspend_ops)
return -ENOSYS;
if (need_suspend_ops(state) && suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
} else if (state == PM_SUSPEND_FREEZE && freeze_ops && freeze_ops->begin) {
error = freeze_ops->begin();
if (error)
goto Close;
}
suspend_console();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
pr_err("PM: Some devices failed to suspend, or early wake event detected\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
do {
error = suspend_enter(state, &wakeup);
} while (!error && !wakeup && need_suspend_ops(state)
&& suspend_ops->suspend_again && suspend_ops->suspend_again());
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
suspend_test_finish("resume devices");
resume_console();
Close:
if (need_suspend_ops(state) && suspend_ops->end)
suspend_ops->end();
else if (state == PM_SUSPEND_FREEZE && freeze_ops && freeze_ops->end)
freeze_ops->end();
return error;
Recover_platform:
if (need_suspend_ops(state) && suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
static int suspend_prepare(suspend_state_t state)
{
int error;
unsigned int free_pages;
if (!pm_ops || !pm_ops->enter)
return -EPERM;
pm_prepare_console();
if (freeze_processes()) {
error = -EAGAIN;
goto Thaw;
}
if ((free_pages = global_page_state(NR_FREE_PAGES))
< FREE_PAGE_NUMBER) {
pr_debug("PM: free some memory\n");
shrink_all_memory(FREE_PAGE_NUMBER - free_pages);
if (nr_free_pages() < FREE_PAGE_NUMBER) {
error = -ENOMEM;
printk(KERN_ERR "PM: No enough memory\n");
goto Thaw;
}
}
if (pm_ops->prepare) {
if ((error = pm_ops->prepare(state)))
goto Thaw;
}
suspend_console();
error = device_suspend(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "Some devices failed to suspend\n");
goto Resume_devices;
}
error = disable_nonboot_cpus();
if (!error)
return 0;
enable_nonboot_cpus();
Resume_devices:
pm_finish(state);
device_resume();
resume_console();
Thaw:
thaw_processes();
pm_restore_console();
return error;
}
/**
* suspend_devices_and_enter - Suspend devices and enter system sleep state.
* @state: System sleep state to enter.
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
bool wakeup = false;
if (!suspend_ops)
return -ENOSYS;
trace_machine_suspend(state);
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
do {
error = suspend_enter(state, &wakeup);
} while (!error && !wakeup
&& suspend_ops->suspend_again && suspend_ops->suspend_again());
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
#ifdef CONFIG_ZTE_PLATFORM_RECORD_APP_AWAKE_SUSPEND_TIME
pr_info("Resume DONE \n"); //LHX_PM_20110113 add log to indicate resume finish
record_sleep_awake_time(false); //LHX_PM_20110324_01 add code to record how long the APP sleeps or keeps awake
#endif
suspend_test_finish("resume devices");
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
trace_machine_suspend(PWR_EVENT_EXIT);
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
int hibernation_restore(int platform_mode)
{
int error;
pm_prepare_console();
suspend_console();
error = dpm_suspend_start(PMSG_QUIESCE);
if (!error) {
error = resume_target_kernel(platform_mode);
dpm_resume_end(PMSG_RECOVER);
}
resume_console();
pm_restore_console();
return error;
}
/**
* suspend_devices_and_enter - suspend devices and enter the desired system
* sleep state.
* @state: state to enter
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
gfp_t saved_mask;
if (!suspend_ops)
return -ENOSYS;
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES)) {
printk(KERN_ERR "PM: suspend test failed\n");
goto Recover_platform;
}
suspend_enter(state);
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
suspend_test_finish("resume devices");
set_gfp_allowed_mask(saved_mask);
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
/**
* suspend_devices_and_enter - Suspend devices and enter system sleep state.
* @state: System sleep state to enter.
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
bool wakeup = false;
if (!sleep_state_supported(state))
return -ENOSYS;
pm_suspend_target_state = state;
error = platform_suspend_begin(state);
if (error)
goto Close;
suspend_console();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
pr_err("Some devices failed to suspend, or early wake event detected\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
do {
error = suspend_enter(state, &wakeup);
} while (!error && !wakeup && platform_suspend_again(state));
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
suspend_test_finish("resume devices");
trace_suspend_resume(TPS("resume_console"), state, true);
resume_console();
trace_suspend_resume(TPS("resume_console"), state, false);
Close:
platform_resume_end(state);
pm_suspend_target_state = PM_SUSPEND_ON;
return error;
Recover_platform:
platform_recover(state);
goto Resume_devices;
}
/**
* suspend_devices_and_enter - suspend devices and enter the desired system
* sleep state.
* @state: state to enter
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
if (!suspend_ops)
return -ENOSYS;
trace_machine_suspend(state);
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
suspend_test_start();
suspend_expire_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_expire_finish("suspend devices");
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
suspend_enter(state);
Resume_devices:
suspend_test_start();
suspend_expire_start();
dpm_resume_end(PMSG_RESUME);
suspend_expire_finish("resume devices");
suspend_test_finish("resume devices");
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
trace_machine_suspend(PWR_EVENT_EXIT);
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
/**
* suspend_devices_and_enter - suspend devices and enter the desired system
* sleep state.
* @state: state to enter
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
if (!suspend_ops)
return -ENOSYS;
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
pm_restrict_gfp_mask();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
suspend_enter(state);
Resume_devices:
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
ktime_resume_endtime=ktime_get();
printk(KERN_ERR "<POWER>resume6[peripheral resume]take %llu ns\n",ktime_to_ns(ktime_sub(ktime_resume_endtime, ktime_resume_fromtime)));
ktime_resume_fromtime=ktime_resume_endtime;
suspend_test_finish("resume devices");
pm_restore_gfp_mask();
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
void pre_suspend(void)
{
#ifdef CONFIG_NETFRONT
suspend_netfront();
#endif
suspend_xenbus();
local_irq_disable();
suspend_gnttab();
suspend_time();
suspend_console();
suspend_events();
}
int hibernation_restore(int platform_mode)
{
int error;
gfp_t saved_mask;
pm_prepare_console();
suspend_console();
saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
error = dpm_suspend_start(PMSG_QUIESCE);
if (!error) {
error = resume_target_kernel(platform_mode);
dpm_resume_end(PMSG_RECOVER);
}
set_gfp_allowed_mask(saved_mask);
resume_console();
pm_restore_console();
return error;
}
int hibernation_snapshot(int platform_mode)
{
int error;
gfp_t saved_mask;
error = platform_begin(platform_mode);
if (error)
return error;
/* Preallocate image memory before shutting down devices. */
error = hibernate_preallocate_memory();
if (error)
goto Close;
suspend_console();
saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
error = dpm_suspend_start(PMSG_FREEZE);
if (error)
goto Recover_platform;
if (hibernation_test(TEST_DEVICES))
goto Recover_platform;
error = create_image(platform_mode);
/* Control returns here after successful restore */
Resume_devices:
/* We may need to release the preallocated image pages here. */
if (error || !in_suspend)
swsusp_free();
dpm_resume_end(in_suspend ?
(error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
set_gfp_allowed_mask(saved_mask);
resume_console();
Close:
platform_end(platform_mode);
return error;
Recover_platform:
platform_recover(platform_mode);
goto Resume_devices;
}
/**
* suspend_devices_and_enter - suspend devices and enter the desired system
* sleep state.
* @state: state to enter
*/
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
if (!suspend_ops)
return -ENOSYS;
if (suspend_ops->begin) {
error = suspend_ops->begin(state);
if (error)
goto Close;
}
suspend_console();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to suspend\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
suspend_enter(state);
Resume_devices:
suspend_test_start();
//20110727 [email protected] Patch applied from P990 froyo MR-03
printk("# Drv Resume Star\n");
star_emergency_restart("sys",61);
dpm_resume_end(PMSG_RESUME);
suspend_test_finish("resume devices");
resume_console();
Close:
if (suspend_ops->end)
suspend_ops->end();
return error;
Recover_platform:
if (suspend_ops->recover)
suspend_ops->recover();
goto Resume_devices;
}
int hibernation_snapshot(int platform_mode)
{
int error;
/* Free memory before shutting down devices. */
error = swsusp_shrink_memory();
if (error)
return error;
error = platform_start(platform_mode);
if (error)
return error;
suspend_console();
error = device_suspend(PMSG_FREEZE);
if (error)
goto Resume_console;
error = platform_pre_snapshot(platform_mode);
if (error)
goto Resume_devices;
error = disable_nonboot_cpus();
if (!error) {
if (hibernation_mode != HIBERNATION_TEST) {
in_suspend = 1;
error = create_image(platform_mode);
/* Control returns here after successful restore */
} else {
printk("swsusp debug: Waiting for 5 seconds.\n");
mdelay(5000);
}
}
enable_nonboot_cpus();
Resume_devices:
platform_finish(platform_mode);
device_resume();
Resume_console:
resume_console();
return error;
}
static inline int snapshot_suspend(int platform_suspend)
{
int error;
mutex_lock(&pm_mutex);
/* Free memory before shutting down devices. */
error = swsusp_shrink_memory();
if (error)
goto Finish;
if (platform_suspend) {
error = platform_prepare();
if (error)
goto Finish;
}
suspend_console();
error = device_suspend(PMSG_FREEZE);
if (error)
goto Resume_devices;
error = disable_nonboot_cpus();
if (!error) {
in_suspend = 1;
error = swsusp_suspend();
}
enable_nonboot_cpus();
Resume_devices:
if (platform_suspend)
platform_finish();
device_resume();
resume_console();
Finish:
mutex_unlock(&pm_mutex);
return error;
}
int hibernation_snapshot(int platform_mode)
{
int error;
error = platform_begin(platform_mode);
if (error)
return error;
/* Free memory before shutting down devices. */
error = swsusp_shrink_memory();
if (error)
goto Close;
suspend_console();
error = dpm_suspend_start(PMSG_FREEZE);
if (error)
goto Recover_platform;
if (hibernation_test(TEST_DEVICES))
goto Recover_platform;
error = create_image(platform_mode);
/* Control returns here after successful restore */
Resume_devices:
dpm_resume_end(in_suspend ?
(error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
resume_console();
Close:
platform_end(platform_mode);
return error;
Recover_platform:
platform_recover(platform_mode);
goto Resume_devices;
}