static int enter_state(u32 state) { int error; if (down_trylock(&pm_sem)) return -EBUSY; /* Suspend is hard to get right on SMP. */ if (num_online_cpus() != 1) { error = -EPERM; goto Unlock; } if (state == PM_SUSPEND_DISK) { error = pm_suspend_disk(); goto Unlock; } pr_debug("PM: Preparing system for suspend\n"); if ((error = suspend_prepare(state))) goto Unlock; pr_debug("PM: Entering state.\n"); error = suspend_enter(state); pr_debug("PM: Finishing up.\n"); suspend_finish(state); Unlock: up(&pm_sem); return error; }
static int enter_state(suspend_state_t state) { int error; if (!valid_state(state)) return -ENODEV; if (!mutex_trylock(&pm_mutex)) return -EBUSY; if (state == PM_SUSPEND_DISK) { error = pm_suspend_disk(); goto Unlock; } pr_debug("PM: Preparing system for %s sleep\n", pm_states[state]); if ((error = suspend_prepare(state))) goto Unlock; pr_debug("PM: Entering %s sleep\n", pm_states[state]); error = suspend_enter(state); pr_debug("PM: Finishing wakeup.\n"); suspend_finish(state); Unlock: mutex_unlock(&pm_mutex); 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; }
/** * 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; }
/** * 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; }
/** * 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; }
/** * 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; }
/** * 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; }
/** * 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(); dpm_resume_end(PMSG_RESUME); #ifdef CONFIG_WMT_SPITS2_SUPPORT /*Disable TS interrupt*/ wmt_ts_pre_suspend(PMSG_SUSPEND); #endif suspend_test_finish("resume devices"); resume_console(); printk("WMT wake up event %x\n",WMT_WAKE_UP_EVENT); WMT_WAKE_UP_EVENT = 0; 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 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; }
/** * 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 suspend_devices_and_enter(suspend_state_t state) { int error; bool wakeup = false; if (!suspend_ops) return -ENOSYS; trace_machine_suspend(state); #ifdef CONFIG_SUSPEND_DISABLE_SPC pm_qos_add_request(&pm_qos_req_dma, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); pm_qos_update_request(&pm_qos_req_dma, 3); #endif if (suspend_ops->begin) { error = suspend_ops->begin(state); if (error) goto Close; } if (!suspend_console_deferred) suspend_console(); ftrace_stop(); suspend_test_start(); error = dpm_suspend_start(PMSG_SUSPEND); if (error) { pr_debug(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"); ftrace_start(); if (!suspend_console_deferred) resume_console(); Close: if (suspend_ops->end) suspend_ops->end(); #ifdef CONFIG_SUSPEND_DISABLE_SPC pm_qos_update_request(&pm_qos_req_dma, PM_QOS_DEFAULT_VALUE); pm_qos_remove_request(&pm_qos_req_dma); #endif trace_machine_suspend(PWR_EVENT_EXIT); return error; Recover_platform: if (suspend_ops->recover) suspend_ops->recover(); goto Resume_devices; }
static int snapshot_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { int error = 0; struct snapshot_data *data; loff_t avail; sector_t offset; if (_IOC_TYPE(cmd) != SNAPSHOT_IOC_MAGIC) return -ENOTTY; if (_IOC_NR(cmd) > SNAPSHOT_IOC_MAXNR) return -ENOTTY; if (!capable(CAP_SYS_ADMIN)) return -EPERM; data = filp->private_data; switch (cmd) { case SNAPSHOT_FREEZE: if (data->frozen) break; mutex_lock(&pm_mutex); if (freeze_processes()) { thaw_processes(); error = -EBUSY; } mutex_unlock(&pm_mutex); if (!error) data->frozen = 1; break; case SNAPSHOT_UNFREEZE: if (!data->frozen || data->ready) break; mutex_lock(&pm_mutex); thaw_processes(); mutex_unlock(&pm_mutex); data->frozen = 0; break; case SNAPSHOT_ATOMIC_SNAPSHOT: if (data->mode != O_RDONLY || !data->frozen || data->ready) { error = -EPERM; break; } error = snapshot_suspend(data->platform_suspend); if (!error) error = put_user(in_suspend, (unsigned int __user *)arg); if (!error) data->ready = 1; break; case SNAPSHOT_ATOMIC_RESTORE: snapshot_write_finalize(&data->handle); if (data->mode != O_WRONLY || !data->frozen || !snapshot_image_loaded(&data->handle)) { error = -EPERM; break; } error = snapshot_restore(data->platform_suspend); break; case SNAPSHOT_FREE: swsusp_free(); memset(&data->handle, 0, sizeof(struct snapshot_handle)); data->ready = 0; break; case SNAPSHOT_SET_IMAGE_SIZE: image_size = arg; break; case SNAPSHOT_AVAIL_SWAP: avail = count_swap_pages(data->swap, 1); avail <<= PAGE_SHIFT; error = put_user(avail, (loff_t __user *)arg); break; case SNAPSHOT_GET_SWAP_PAGE: if (data->swap < 0 || data->swap >= MAX_SWAPFILES) { error = -ENODEV; break; } offset = alloc_swapdev_block(data->swap); if (offset) { offset <<= PAGE_SHIFT; error = put_user(offset, (sector_t __user *)arg); } else { error = -ENOSPC; } break; case SNAPSHOT_FREE_SWAP_PAGES: if (data->swap < 0 || data->swap >= MAX_SWAPFILES) { error = -ENODEV; break; } free_all_swap_pages(data->swap); break; case SNAPSHOT_SET_SWAP_FILE: if (!swsusp_swap_in_use()) { /* * User space encodes device types as two-byte values, * so we need to recode them */ if (old_decode_dev(arg)) { data->swap = swap_type_of(old_decode_dev(arg), 0, NULL); if (data->swap < 0) error = -ENODEV; } else { data->swap = -1; error = -EINVAL; } } else { error = -EPERM; } break; case SNAPSHOT_S2RAM: if (!pm_ops) { error = -ENOSYS; break; } if (!data->frozen) { error = -EPERM; break; } if (!mutex_trylock(&pm_mutex)) { error = -EBUSY; break; } if (pm_ops->prepare) { error = pm_ops->prepare(PM_SUSPEND_MEM); if (error) goto OutS3; } /* Put devices to sleep */ suspend_console(); error = device_suspend(PMSG_SUSPEND); if (error) { printk(KERN_ERR "Failed to suspend some devices.\n"); } else { error = disable_nonboot_cpus(); if (!error) { /* Enter S3, system is already frozen */ suspend_enter(PM_SUSPEND_MEM); enable_nonboot_cpus(); } /* Wake up devices */ device_resume(); } resume_console(); if (pm_ops->finish) pm_ops->finish(PM_SUSPEND_MEM); OutS3: mutex_unlock(&pm_mutex); break; case SNAPSHOT_PMOPS: error = -EINVAL; switch (arg) { case PMOPS_PREPARE: if (hibernation_ops) { data->platform_suspend = 1; error = 0; } else { error = -ENOSYS; } break; case PMOPS_ENTER: if (data->platform_suspend) { kernel_shutdown_prepare(SYSTEM_SUSPEND_DISK); error = hibernation_ops->enter(); } break; case PMOPS_FINISH: if (data->platform_suspend) error = 0; break; default: printk(KERN_ERR "SNAPSHOT_PMOPS: invalid argument %ld\n", arg); } break; case SNAPSHOT_SET_SWAP_AREA: if (swsusp_swap_in_use()) { error = -EPERM; } else { struct resume_swap_area swap_area; dev_t swdev; error = copy_from_user(&swap_area, (void __user *)arg, sizeof(struct resume_swap_area)); if (error) { error = -EFAULT; break; } /* * User space encodes device types as two-byte values, * so we need to recode them */ swdev = old_decode_dev(swap_area.dev); if (swdev) { offset = swap_area.offset; data->swap = swap_type_of(swdev, offset, NULL); if (data->swap < 0) error = -ENODEV; } else { data->swap = -1; error = -EINVAL; } } break; default: error = -ENOTTY; } return error; }
int suspend_devices_and_enter(suspend_state_t state) { int error; if (!suspend_ops) return -ENOSYS; trace_machine_suspend(state); var_wakeup_sts = 0; var_during_suspend = 1; pmc_disable_save_wakeup_events(); 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; error = suspend_enter(state); Resume_devices: if (wmt_trigger_resume_kpad){ wmt_trigger_resume_kpad=0; wmt_resume_kpad(); } if (wmt_trigger_resume_notify){ wmt_trigger_resume_notify=0; wmt_resume_notify(); } suspend_test_start(); dpm_resume_end(PMSG_RESUME); suspend_test_finish("resume devices"); resume_console(); printk("WMT wake up event %x\n",WMT_WAKE_UP_EVENT); WMT_WAKE_UP_EVENT = 0; Close: if (suspend_ops->end) suspend_ops->end(); pmc_enable_wakeup_restore_events(); var_during_suspend = 0; trace_machine_suspend(PWR_EVENT_EXIT); return error; Recover_platform: if (suspend_ops->recover) suspend_ops->recover(); goto Resume_devices; }
static int snapshot_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { int error = 0; struct snapshot_data *data; loff_t offset, avail; if (_IOC_TYPE(cmd) != SNAPSHOT_IOC_MAGIC) return -ENOTTY; if (_IOC_NR(cmd) > SNAPSHOT_IOC_MAXNR) return -ENOTTY; if (!capable(CAP_SYS_ADMIN)) return -EPERM; data = filp->private_data; switch (cmd) { case SNAPSHOT_FREEZE: if (data->frozen) break; down(&pm_sem); disable_nonboot_cpus(); if (freeze_processes()) { thaw_processes(); enable_nonboot_cpus(); error = -EBUSY; } up(&pm_sem); if (!error) data->frozen = 1; break; case SNAPSHOT_UNFREEZE: if (!data->frozen) break; down(&pm_sem); thaw_processes(); enable_nonboot_cpus(); up(&pm_sem); data->frozen = 0; break; case SNAPSHOT_ATOMIC_SNAPSHOT: if (data->mode != O_RDONLY || !data->frozen || data->ready) { error = -EPERM; break; } down(&pm_sem); /* Free memory before shutting down devices. */ error = swsusp_shrink_memory(); if (!error) { error = device_suspend(PMSG_FREEZE); if (!error) { in_suspend = 1; error = swsusp_suspend(); device_resume(); } } up(&pm_sem); if (!error) error = put_user(in_suspend, (unsigned int __user *)arg); if (!error) data->ready = 1; break; case SNAPSHOT_ATOMIC_RESTORE: if (data->mode != O_WRONLY || !data->frozen || !snapshot_image_loaded(&data->handle)) { error = -EPERM; break; } down(&pm_sem); pm_prepare_console(); error = device_suspend(PMSG_FREEZE); if (!error) { error = swsusp_resume(); device_resume(); } pm_restore_console(); up(&pm_sem); break; case SNAPSHOT_FREE: swsusp_free(); memset(&data->handle, 0, sizeof(struct snapshot_handle)); data->ready = 0; break; case SNAPSHOT_SET_IMAGE_SIZE: image_size = arg; break; case SNAPSHOT_AVAIL_SWAP: avail = count_swap_pages(data->swap, 1); avail <<= PAGE_SHIFT; error = put_user(avail, (loff_t __user *)arg); break; case SNAPSHOT_GET_SWAP_PAGE: if (data->swap < 0 || data->swap >= MAX_SWAPFILES) { error = -ENODEV; break; } if (!data->bitmap) { data->bitmap = alloc_bitmap(count_swap_pages(data->swap, 0)); if (!data->bitmap) { error = -ENOMEM; break; } } offset = alloc_swap_page(data->swap, data->bitmap); if (offset) { offset <<= PAGE_SHIFT; error = put_user(offset, (loff_t __user *)arg); } else { error = -ENOSPC; } break; case SNAPSHOT_FREE_SWAP_PAGES: if (data->swap < 0 || data->swap >= MAX_SWAPFILES) { error = -ENODEV; break; } free_all_swap_pages(data->swap, data->bitmap); free_bitmap(data->bitmap); data->bitmap = NULL; break; case SNAPSHOT_SET_SWAP_FILE: if (!data->bitmap) { /* * User space encodes device types as two-byte values, * so we need to recode them */ if (old_decode_dev(arg)) { data->swap = swap_type_of(old_decode_dev(arg)); if (data->swap < 0) error = -ENODEV; } else { data->swap = -1; error = -EINVAL; } } else { error = -EPERM; } break; case SNAPSHOT_S2RAM: if (!data->frozen) { error = -EPERM; break; } if (down_trylock(&pm_sem)) { error = -EBUSY; break; } if (pm_ops->prepare) { error = pm_ops->prepare(PM_SUSPEND_MEM); if (error) goto OutS3; } /* Put devices to sleep */ error = device_suspend(PMSG_SUSPEND); if (error) { printk(KERN_ERR "Failed to suspend some devices.\n"); } else { /* Enter S3, system is already frozen */ suspend_enter(PM_SUSPEND_MEM); /* Wake up devices */ device_resume(); } if (pm_ops->finish) pm_ops->finish(PM_SUSPEND_MEM); OutS3: up(&pm_sem); break; default: error = -ENOTTY; } 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; } #if 1 { struct timespec ts; struct rtc_time tm; long elasped_time=0L; int capa = get_bat_soc(); // battery capa get int volt = get_bat_volt(); // fuel gage volt getnstimeofday(&ts); rtc_time_to_tm(ts.tv_sec, &tm); //printk("%s:", __func__); elasped_time=ts.tv_sec-old_ts.tv_sec; printk("([elasped_time=%ldsec, suspend]%d-%02d-%02d %02d:%02d:%02d.%09lu UTC, battery capa=%d, volt=%d)\n", elasped_time, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec, capa, volt); old_ts = ts; } #endif 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; 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(); #if 1 { struct timespec ts; struct rtc_time tm; int capa = get_bat_soc(); // battery capa get int volt = get_bat_volt(); // fuel gage volt getnstimeofday(&ts); long elasped_time=0L; elasped_time=ts.tv_sec-old_ts.tv_sec; rtc_time_to_tm(ts.tv_sec, &tm); //printk("%s:", __func__); printk("\n([elasped_time=%ldsec, resume]%d-%02d-%02d %02d:%02d:%02d.%09lu UTC, battery capa=%d, volt=%d)\n", elasped_time, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec, capa, volt); old_ts = ts; } #endif Close: if (suspend_ops->end) suspend_ops->end(); return error; Recover_platform: if (suspend_ops->recover) suspend_ops->recover(); goto Resume_devices; }