/kernel/power/main.c
C | 972 lines | 768 code | 168 blank | 36 comment | 117 complexity | 8a037a635558218485aa216ffab7835f MD5 | raw file
Possible License(s): GPL-2.0
- /*
- * kernel/power/main.c - PM subsystem core functionality.
- *
- * Copyright (c) 2003 Patrick Mochel
- * Copyright (c) 2003 Open Source Development Lab
- *
- * This file is released under the GPLv2
- *
- */
- #include <linux/export.h>
- #include <linux/kobject.h>
- #include <linux/string.h>
- #include <linux/resume-trace.h>
- #include <linux/workqueue.h>
- #include <linux/debugfs.h>
- #include <linux/seq_file.h>
- #include <linux/hrtimer.h>
- #include "power.h"
- #ifdef CONFIG_PERFLOCK
- #include <mach/perflock.h>
- #endif
- #define MAX_BUF 100
- DEFINE_MUTEX(pm_mutex);
- #ifdef CONFIG_PM_SLEEP
- static BLOCKING_NOTIFIER_HEAD(pm_chain_head);
- static void touch_event_fn(struct work_struct *work);
- static DECLARE_WORK(touch_event_struct, touch_event_fn);
- static struct hrtimer tc_ev_timer;
- static int tc_ev_processed;
- static ktime_t touch_evt_timer_val;
- int register_pm_notifier(struct notifier_block *nb)
- {
- return blocking_notifier_chain_register(&pm_chain_head, nb);
- }
- EXPORT_SYMBOL_GPL(register_pm_notifier);
- int unregister_pm_notifier(struct notifier_block *nb)
- {
- return blocking_notifier_chain_unregister(&pm_chain_head, nb);
- }
- EXPORT_SYMBOL_GPL(unregister_pm_notifier);
- int pm_notifier_call_chain(unsigned long val)
- {
- int ret = blocking_notifier_call_chain(&pm_chain_head, val, NULL);
- return notifier_to_errno(ret);
- }
- int pm_async_enabled = 1;
- static ssize_t pm_async_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "%d\n", pm_async_enabled);
- }
- static ssize_t pm_async_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- unsigned long val;
- if (strict_strtoul(buf, 10, &val))
- return -EINVAL;
- if (val > 1)
- return -EINVAL;
- pm_async_enabled = val;
- return n;
- }
- power_attr(pm_async);
- static ssize_t
- touch_event_show(struct kobject *kobj,
- struct kobj_attribute *attr, char *buf)
- {
- if (tc_ev_processed == 0)
- return snprintf(buf, strnlen("touch_event", MAX_BUF) + 1,
- "touch_event");
- else
- return snprintf(buf, strnlen("null", MAX_BUF) + 1,
- "null");
- }
- static ssize_t
- touch_event_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- hrtimer_cancel(&tc_ev_timer);
- tc_ev_processed = 0;
- hrtimer_start(&tc_ev_timer, touch_evt_timer_val, HRTIMER_MODE_REL);
-
- sysfs_notify(kobj, NULL, "touch_event");
- return n;
- }
- power_attr(touch_event);
- static ssize_t
- touch_event_timer_show(struct kobject *kobj,
- struct kobj_attribute *attr, char *buf)
- {
- return snprintf(buf, MAX_BUF, "%lld", touch_evt_timer_val.tv64);
- }
- static ssize_t
- touch_event_timer_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- unsigned long val;
- if (strict_strtoul(buf, 10, &val))
- return -EINVAL;
- touch_evt_timer_val = ktime_set(0, val*1000);
- return n;
- }
- power_attr(touch_event_timer);
- static void touch_event_fn(struct work_struct *work)
- {
-
- tc_ev_processed = 1;
- sysfs_notify(power_kobj, NULL, "touch_event");
- return;
- }
- static enum hrtimer_restart tc_ev_stop(struct hrtimer *hrtimer)
- {
- schedule_work(&touch_event_struct);
- return HRTIMER_NORESTART;
- }
- #ifdef CONFIG_PM_DEBUG
- int pm_test_level = TEST_NONE;
- static const char * const pm_tests[__TEST_AFTER_LAST] = {
- [TEST_NONE] = "none",
- [TEST_CORE] = "core",
- [TEST_CPUS] = "processors",
- [TEST_PLATFORM] = "platform",
- [TEST_DEVICES] = "devices",
- [TEST_FREEZER] = "freezer",
- };
- static ssize_t pm_test_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
- char *s = buf;
- int level;
- for (level = TEST_FIRST; level <= TEST_MAX; level++)
- if (pm_tests[level]) {
- if (level == pm_test_level)
- s += sprintf(s, "[%s] ", pm_tests[level]);
- else
- s += sprintf(s, "%s ", pm_tests[level]);
- }
- if (s != buf)
-
- *(s-1) = '\n';
- return (s - buf);
- }
- static ssize_t pm_test_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- const char * const *s;
- int level;
- char *p;
- int len;
- int error = -EINVAL;
- p = memchr(buf, '\n', n);
- len = p ? p - buf : n;
- lock_system_sleep();
- level = TEST_FIRST;
- for (s = &pm_tests[level]; level <= TEST_MAX; s++, level++)
- if (*s && len == strlen(*s) && !strncmp(buf, *s, len)) {
- pm_test_level = level;
- error = 0;
- break;
- }
- unlock_system_sleep();
- return error ? error : n;
- }
- power_attr(pm_test);
- #endif
- #ifdef CONFIG_DEBUG_FS
- static char *suspend_step_name(enum suspend_stat_step step)
- {
- switch (step) {
- case SUSPEND_FREEZE:
- return "freeze";
- case SUSPEND_PREPARE:
- return "prepare";
- case SUSPEND_SUSPEND:
- return "suspend";
- case SUSPEND_SUSPEND_NOIRQ:
- return "suspend_noirq";
- case SUSPEND_RESUME_NOIRQ:
- return "resume_noirq";
- case SUSPEND_RESUME:
- return "resume";
- default:
- return "";
- }
- }
- static int suspend_stats_show(struct seq_file *s, void *unused)
- {
- int i, index, last_dev, last_errno, last_step;
- last_dev = suspend_stats.last_failed_dev + REC_FAILED_NUM - 1;
- last_dev %= REC_FAILED_NUM;
- last_errno = suspend_stats.last_failed_errno + REC_FAILED_NUM - 1;
- last_errno %= REC_FAILED_NUM;
- last_step = suspend_stats.last_failed_step + REC_FAILED_NUM - 1;
- last_step %= REC_FAILED_NUM;
- seq_printf(s, "%s: %d\n%s: %d\n%s: %d\n%s: %d\n%s: %d\n"
- "%s: %d\n%s: %d\n%s: %d\n%s: %d\n%s: %d\n",
- "success", suspend_stats.success,
- "fail", suspend_stats.fail,
- "failed_freeze", suspend_stats.failed_freeze,
- "failed_prepare", suspend_stats.failed_prepare,
- "failed_suspend", suspend_stats.failed_suspend,
- "failed_suspend_late",
- suspend_stats.failed_suspend_late,
- "failed_suspend_noirq",
- suspend_stats.failed_suspend_noirq,
- "failed_resume", suspend_stats.failed_resume,
- "failed_resume_early",
- suspend_stats.failed_resume_early,
- "failed_resume_noirq",
- suspend_stats.failed_resume_noirq);
- seq_printf(s, "failures:\n last_failed_dev:\t%-s\n",
- suspend_stats.failed_devs[last_dev]);
- for (i = 1; i < REC_FAILED_NUM; i++) {
- index = last_dev + REC_FAILED_NUM - i;
- index %= REC_FAILED_NUM;
- seq_printf(s, "\t\t\t%-s\n",
- suspend_stats.failed_devs[index]);
- }
- seq_printf(s, " last_failed_errno:\t%-d\n",
- suspend_stats.errno[last_errno]);
- for (i = 1; i < REC_FAILED_NUM; i++) {
- index = last_errno + REC_FAILED_NUM - i;
- index %= REC_FAILED_NUM;
- seq_printf(s, "\t\t\t%-d\n",
- suspend_stats.errno[index]);
- }
- seq_printf(s, " last_failed_step:\t%-s\n",
- suspend_step_name(
- suspend_stats.failed_steps[last_step]));
- for (i = 1; i < REC_FAILED_NUM; i++) {
- index = last_step + REC_FAILED_NUM - i;
- index %= REC_FAILED_NUM;
- seq_printf(s, "\t\t\t%-s\n",
- suspend_step_name(
- suspend_stats.failed_steps[index]));
- }
- return 0;
- }
- static int suspend_stats_open(struct inode *inode, struct file *file)
- {
- return single_open(file, suspend_stats_show, NULL);
- }
- static const struct file_operations suspend_stats_operations = {
- .open = suspend_stats_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- static int __init pm_debugfs_init(void)
- {
- debugfs_create_file("suspend_stats", S_IFREG | S_IRUGO,
- NULL, NULL, &suspend_stats_operations);
- return 0;
- }
- late_initcall(pm_debugfs_init);
- #endif
- #endif
- struct kobject *power_kobj;
- static ssize_t state_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
- char *s = buf;
- #ifdef CONFIG_SUSPEND
- int i;
- for (i = 0; i < PM_SUSPEND_MAX; i++) {
- if (pm_states[i] && valid_state(i))
- s += sprintf(s,"%s ", pm_states[i]);
- }
- #endif
- #ifdef CONFIG_HIBERNATION
- s += sprintf(s, "%s\n", "disk");
- #else
- if (s != buf)
-
- *(s-1) = '\n';
- #endif
- return (s - buf);
- }
- static suspend_state_t decode_state(const char *buf, size_t n)
- {
- #ifdef CONFIG_SUSPEND
- #ifdef CONFIG_EARLYSUSPEND
- suspend_state_t state = PM_SUSPEND_ON;
- #else
- suspend_state_t state = PM_SUSPEND_STANDBY;
- #endif
- const char * const *s;
- #endif
- char *p;
- int len;
- p = memchr(buf, '\n', n);
- len = p ? p - buf : n;
-
- if (len == 4 && !strncmp(buf, "disk", len))
- return PM_SUSPEND_MAX;
- #ifdef CONFIG_SUSPEND
- for (s = &pm_states[state]; state < PM_SUSPEND_MAX; s++, state++)
- if (*s && len == strlen(*s) && !strncmp(buf, *s, len))
- return state;
- #endif
- return PM_SUSPEND_ON;
- }
- static ssize_t state_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- suspend_state_t state;
- int error;
- error = pm_autosleep_lock();
- if (error)
- return error;
- if (pm_autosleep_state() > PM_SUSPEND_ON) {
- error = -EBUSY;
- goto out;
- }
- state = decode_state(buf, n);
- if (state < PM_SUSPEND_MAX)
- error = pm_suspend(state);
- else if (state == PM_SUSPEND_MAX)
- error = hibernate();
- else
- error = -EINVAL;
- out:
- pm_autosleep_unlock();
- return error ? error : n;
- }
- power_attr(state);
- #ifdef CONFIG_PM_SLEEP
- /*
- * The 'wakeup_count' attribute, along with the functions defined in
- * drivers/base/power/wakeup.c, provides a means by which wakeup events can be
- * handled in a non-racy way.
- *
- * If a wakeup event occurs when the system is in a sleep state, it simply is
- * woken up. In turn, if an event that would wake the system up from a sleep
- * state occurs when it is undergoing a transition to that sleep state, the
- * transition should be aborted. Moreover, if such an event occurs when the
- * system is in the working state, an attempt to start a transition to the
- * given sleep state should fail during certain period after the detection of
- * the event. Using the 'state' attribute alone is not sufficient to satisfy
- * these requirements, because a wakeup event may occur exactly when 'state'
- * is being written to and may be delivered to user space right before it is
- * frozen, so the event will remain only partially processed until the system is
- * woken up by another event. In particular, it won't cause the transition to
- * a sleep state to be aborted.
- *
- * This difficulty may be overcome if user space uses 'wakeup_count' before
- * writing to 'state'. It first should read from 'wakeup_count' and store
- * the read value. Then, after carrying out its own preparations for the system
- * transition to a sleep state, it should write the stored value to
- * 'wakeup_count'. If that fails, at least one wakeup event has occurred since
- * 'wakeup_count' was read and 'state' should not be written to. Otherwise, it
- * is allowed to write to 'state', but the transition will be aborted if there
- * are any wakeup events detected after 'wakeup_count' was written to.
- */
- static ssize_t wakeup_count_show(struct kobject *kobj,
- struct kobj_attribute *attr,
- char *buf)
- {
- unsigned int val;
- return pm_get_wakeup_count(&val, true) ?
- sprintf(buf, "%u\n", val) : -EINTR;
- }
- static ssize_t wakeup_count_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- unsigned int val;
- int error;
- error = pm_autosleep_lock();
- if (error)
- return error;
- if (pm_autosleep_state() > PM_SUSPEND_ON) {
- error = -EBUSY;
- goto out;
- }
- error = -EINVAL;
- if (sscanf(buf, "%u", &val) == 1) {
- if (pm_save_wakeup_count(val))
- error = n;
- }
- out:
- pm_autosleep_unlock();
- return error;
- }
- power_attr(wakeup_count);
- #ifdef CONFIG_PM_AUTOSLEEP
- static ssize_t autosleep_show(struct kobject *kobj,
- struct kobj_attribute *attr,
- char *buf)
- {
- suspend_state_t state = pm_autosleep_state();
- if (state == PM_SUSPEND_ON)
- return sprintf(buf, "off\n");
- #ifdef CONFIG_SUSPEND
- if (state < PM_SUSPEND_MAX)
- return sprintf(buf, "%s\n", valid_state(state) ?
- pm_states[state] : "error");
- #endif
- #ifdef CONFIG_HIBERNATION
- return sprintf(buf, "disk\n");
- #else
- return sprintf(buf, "error");
- #endif
- }
- static ssize_t autosleep_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- suspend_state_t state = decode_state(buf, n);
- int error;
- if (state == PM_SUSPEND_ON
- && strcmp(buf, "off") && strcmp(buf, "off\n"))
- return -EINVAL;
- error = pm_autosleep_set_state(state);
- return error ? error : n;
- }
- power_attr(autosleep);
- #endif
- #ifdef CONFIG_PM_WAKELOCKS
- static ssize_t wake_lock_show(struct kobject *kobj,
- struct kobj_attribute *attr,
- char *buf)
- {
- return pm_show_wakelocks(buf, true);
- }
- static ssize_t wake_lock_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- int error = pm_wake_lock(buf);
- return error ? error : n;
- }
- power_attr(wake_lock);
- static ssize_t wake_unlock_show(struct kobject *kobj,
- struct kobj_attribute *attr,
- char *buf)
- {
- return pm_show_wakelocks(buf, false);
- }
- static ssize_t wake_unlock_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- int error = pm_wake_unlock(buf);
- return error ? error : n;
- }
- power_attr(wake_unlock);
- #endif
- #endif
- #ifdef CONFIG_PM_TRACE
- int pm_trace_enabled;
- static ssize_t pm_trace_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "%d\n", pm_trace_enabled);
- }
- static ssize_t
- pm_trace_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- int val;
- if (sscanf(buf, "%d", &val) == 1) {
- pm_trace_enabled = !!val;
- return n;
- }
- return -EINVAL;
- }
- power_attr(pm_trace);
- static ssize_t pm_trace_dev_match_show(struct kobject *kobj,
- struct kobj_attribute *attr,
- char *buf)
- {
- return show_trace_dev_match(buf, PAGE_SIZE);
- }
- static ssize_t
- pm_trace_dev_match_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- return -EINVAL;
- }
- power_attr(pm_trace_dev_match);
- #endif
- #ifdef CONFIG_USER_WAKELOCK
- power_attr(wake_lock);
- power_attr(wake_unlock);
- #endif
- #ifdef CONFIG_PERFLOCK
- static struct perf_lock user_cpu_perf_lock;
- static struct perf_lock user_cpu_ceiling_lock;
- static struct perf_lock user_perf_lock[PERF_LOCK_INVALID];
- static struct perf_lock user_ceiling_lock[PERF_LOCK_INVALID];
- static ssize_t
- perflock_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
-
- int i, perf_enable = 0;
- for (i = 0; i < PERF_LOCK_INVALID; i++)
- if (is_perf_lock_active(&user_perf_lock[i]) != 0)
- perf_enable |= (1 << i);
- if (is_perf_lock_active(&user_cpu_perf_lock) != 0)
- perf_enable |= (1 << PERF_LOCK_INVALID);
- return sprintf(buf, "%d\n", perf_enable);
- }
- static inline void user_cpufreq_perf_lock(int level, int val)
- {
- if (val == 1 && !is_perf_lock_active(&user_perf_lock[level]))
- perf_lock(&user_perf_lock[level]);
- if (val == 0 && is_perf_lock_active(&user_perf_lock[level]))
- perf_unlock(&user_perf_lock[level]);
- }
- #define perf_level_wrapper(off, on, level) \
- case off:\
- user_cpufreq_perf_lock(level, 0);\
- break;\
- case on:\
- user_cpufreq_perf_lock(level, 1);\
- break;
- static ssize_t
- perflock_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- int val , ret = -EINVAL;
- if (sscanf(buf, "%d", &val) > 0) {
- if (val == 11 && !is_perf_lock_active(&user_cpu_perf_lock)) {
- perf_lock(&user_cpu_perf_lock);
- ret = n;
- } else if (val == 10 && is_perf_lock_active(&user_cpu_perf_lock)) {
- perf_unlock(&user_cpu_perf_lock);
- ret = n;
- } else {
- switch (val) {
- perf_level_wrapper(0, 1, PERF_LOCK_LOWEST);
- perf_level_wrapper(2, 3, PERF_LOCK_LOW);
- perf_level_wrapper(4, 5, PERF_LOCK_MEDIUM);
- perf_level_wrapper(6, 7, PERF_LOCK_HIGH);
- perf_level_wrapper(8, 9, PERF_LOCK_HIGHEST);
- default:
-
- break;
- }
- return n;
- }
- }
- return ret;
- }
- power_attr(perflock);
- static ssize_t
- cpufreq_ceiling_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
-
- int i, ceiling_enable = 0;
- for (i = 0; i < PERF_LOCK_INVALID; i++)
- if(is_perf_lock_active(&user_ceiling_lock[i]) != 0)
- ceiling_enable |= (1 << i);
- if (is_perf_lock_active(&user_cpu_ceiling_lock) != 0)
- ceiling_enable |= (1 << PERF_LOCK_INVALID);
- return sprintf(buf, "%d\n", ceiling_enable);
- }
- static inline void user_cpufreq_ceiling_lock(int level, int val)
- {
- if (val == 1 && !is_perf_lock_active(&user_ceiling_lock[level]))
- perf_lock(&user_ceiling_lock[level]);
- if (val == 0 && is_perf_lock_active(&user_ceiling_lock[level]))
- perf_unlock(&user_ceiling_lock[level]);
- }
- #define ceiling_level_wrapper(off, on, level) \
- case off:\
- user_cpufreq_ceiling_lock(level, 0);\
- break;\
- case on:\
- user_cpufreq_ceiling_lock(level, 1);\
- break;
- static ssize_t
- cpufreq_ceiling_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- int val, ret = -EINVAL;
- if (sscanf(buf, "%d", &val) > 0) {
- if (val == 11 && !is_perf_lock_active(&user_cpu_ceiling_lock)) {
- perf_lock(&user_cpu_ceiling_lock);
- ret = n;
- } else if (val == 10 && is_perf_lock_active(&user_cpu_ceiling_lock)) {
- perf_unlock(&user_cpu_ceiling_lock);
- ret = n;
- } else {
- switch (val){
- ceiling_level_wrapper(0, 1, PERF_LOCK_LOWEST);
- ceiling_level_wrapper(2, 3, PERF_LOCK_LOW);
- ceiling_level_wrapper(4, 5, PERF_LOCK_MEDIUM);
- ceiling_level_wrapper(6, 7, PERF_LOCK_HIGH);
- ceiling_level_wrapper(8, 9, PERF_LOCK_HIGHEST);
- default:
-
- break;
- }
- ret = n;
- }
- }
- return ret;
- }
- power_attr(cpufreq_ceiling);
- #endif
- #ifdef CONFIG_HTC_PNPMGR
- int launch_event_enabled = 0;
- static ssize_t
- launch_event_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "%d\n", launch_event_enabled);
- }
- static ssize_t
- launch_event_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- unsigned long val;
- if (strict_strtoul(buf, 10, &val))
- return -EINVAL;
- if (val > 1)
- return -EINVAL;
- launch_event_enabled = val;
- sysfs_notify(kobj, NULL, "launch_event");
- return n;
- }
- power_attr(launch_event);
- int powersave_enabled = 0;
- static ssize_t
- powersave_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "%d\n", powersave_enabled);
- }
- static ssize_t
- powersave_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- unsigned long val;
- if (strict_strtoul(buf, 10, &val))
- return -EINVAL;
- if (val > 1)
- return -EINVAL;
- powersave_enabled = val;
- sysfs_notify(kobj, NULL, "powersave");
- return n;
- }
- power_attr(powersave);
- static int cpunum_max;
- static int cpunum_min;
- static ssize_t
- cpunum_floor_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
- int i;
- int all_cpus = num_possible_cpus();
- for (i = all_cpus-1 ; i >= 0 ; i--) {
- if (cpunum_min & (1 << i))
- break;
- }
- if (i < 0)
- i = 0;
- else
- i++;
- return sprintf(buf, "%d\n", i);
- }
- static ssize_t
- cpunum_floor_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- int val, bit, on;
- if (sscanf(buf, "%d", &val) > 0) {
- bit = val / 2;
- on = val % 2;
- if (bit >= num_possible_cpus() || bit < 0)
- return -EINVAL;
- if (on)
- cpunum_min |= (1 << bit);
- else
- cpunum_min &= ~(1 << bit);
- sysfs_notify(kobj, NULL, "cpunum_floor");
- return n;
- }
- return -EINVAL;
- }
- static ssize_t
- cpunum_ceiling_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
- {
- int i;
- int all_cpus = num_possible_cpus();
- for (i = 0 ; i < all_cpus ; i++) {
- if (cpunum_max & (1 << i))
- break;
- }
- if (i >= all_cpus)
- i = 0;
- else
- i++;
- return sprintf(buf, "%d\n", i);
- }
- static ssize_t
- cpunum_ceiling_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t n)
- {
- int val, bit, on;
- if (sscanf(buf, "%d", &val) > 0) {
- bit = val / 2;
- on = val % 2;
- if (bit >= num_possible_cpus() || bit < 0)
- return -EINVAL;
- if (on)
- cpunum_max |= (1 << bit);
- else
- cpunum_max &= ~(1 << bit);
- sysfs_notify(kobj, NULL, "cpunum_ceiling");
- return n;
- }
- return -EINVAL;
- }
- power_attr(cpunum_floor);
- power_attr(cpunum_ceiling);
- #endif
- static struct attribute *g[] = {
- &state_attr.attr,
- #ifdef CONFIG_PM_TRACE
- &pm_trace_attr.attr,
- &pm_trace_dev_match_attr.attr,
- #endif
- #ifdef CONFIG_PM_SLEEP
- &pm_async_attr.attr,
- &wakeup_count_attr.attr,
- #ifdef CONFIG_PM_AUTOSLEEP
- &autosleep_attr.attr,
- #endif
- #ifdef CONFIG_PM_WAKELOCKS
- &wake_lock_attr.attr,
- &wake_unlock_attr.attr,
- #endif
- &touch_event_attr.attr,
- &touch_event_timer_attr.attr,
- #ifdef CONFIG_PM_DEBUG
- &pm_test_attr.attr,
- #endif
- #ifdef CONFIG_USER_WAKELOCK
- &wake_lock_attr.attr,
- &wake_unlock_attr.attr,
- #endif
- #endif
- #ifdef CONFIG_PERFLOCK
- &perflock_attr.attr,
- &cpufreq_ceiling_attr.attr,
- #endif
- #ifdef CONFIG_HTC_PNPMGR
- &launch_event_attr.attr,
- &powersave_attr.attr,
- &cpunum_floor_attr.attr,
- &cpunum_ceiling_attr.attr,
- #endif
- NULL,
- };
- static struct attribute_group attr_group = {
- .attrs = g,
- };
- #ifdef CONFIG_PM_RUNTIME
- struct workqueue_struct *pm_wq;
- EXPORT_SYMBOL_GPL(pm_wq);
- static int __init pm_start_workqueue(void)
- {
- pm_wq = alloc_workqueue("pm", WQ_FREEZABLE, 0);
- return pm_wq ? 0 : -ENOMEM;
- }
- #else
- static inline int pm_start_workqueue(void) { return 0; }
- #endif
- static int __init pm_init(void)
- {
- int error = pm_start_workqueue();
- #ifdef CONFIG_PERFLOCK
- int i;
- static char ceil_buf[PERF_LOCK_INVALID][38];
- static char perf_buf[PERF_LOCK_INVALID][24];
- #endif
- if (error)
- return error;
- hibernate_image_size_init();
- hibernate_reserved_size_init();
- touch_evt_timer_val = ktime_set(2, 0);
- hrtimer_init(&tc_ev_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- tc_ev_timer.function = &tc_ev_stop;
- tc_ev_processed = 1;
- power_kobj = kobject_create_and_add("power", NULL);
- #ifdef CONFIG_PERFLOCK
- perf_lock_init(&user_cpu_perf_lock, TYPE_PERF_LOCK, PERF_LOCK_HIGHEST, "User CPU Highest Perflock");
- perf_lock_init(&user_cpu_ceiling_lock, TYPE_CPUFREQ_CEILING, PERF_LOCK_HIGH, "User CPU High cpufreq_ceiling lock");
- for (i = PERF_LOCK_LOWEST; i < PERF_LOCK_INVALID; i++) {
- snprintf(perf_buf[i], 23, "User Perflock level(%d)", i);
- perf_buf[i][23] = '\0';
- perf_lock_init(&user_perf_lock[i], TYPE_PERF_LOCK, i, perf_buf[i]);
- snprintf(ceil_buf[i], 37, "User cpufreq_ceiling lock level(%d)", i);
- ceil_buf[i][37] = '\0';
- perf_lock_init(&user_ceiling_lock[i], TYPE_CPUFREQ_CEILING, i, ceil_buf[i]);
- }
- #endif
- if (!power_kobj)
- return -ENOMEM;
- error = sysfs_create_group(power_kobj, &attr_group);
- if (error)
- return error;
- return pm_autosleep_init();
- }
- core_initcall(pm_init);