diff options
| -rw-r--r-- | drivers/acpi/fan.c | 20 | ||||
| -rw-r--r-- | drivers/acpi/processor_thermal.c | 20 | ||||
| -rw-r--r-- | drivers/acpi/thermal.c | 539 | ||||
| -rw-r--r-- | drivers/acpi/video.c | 22 | ||||
| -rw-r--r-- | drivers/platform/x86/intel_menlow.c | 29 | ||||
| -rw-r--r-- | drivers/thermal/thermal_sys.c | 356 | ||||
| -rw-r--r-- | include/linux/thermal.h | 48 |
7 files changed, 525 insertions, 509 deletions
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index eaaee1660bdf..ae41cf3cf4e5 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -68,31 +68,35 @@ static struct acpi_driver acpi_fan_driver = { }; /* thermal cooling device callbacks */ -static int fan_get_max_state(struct thermal_cooling_device *cdev, char *buf) +static int fan_get_max_state(struct thermal_cooling_device *cdev, unsigned long + *state) { /* ACPI fan device only support two states: ON/OFF */ - return sprintf(buf, "1\n"); + *state = 1; + return 0; } -static int fan_get_cur_state(struct thermal_cooling_device *cdev, char *buf) +static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long + *state) { struct acpi_device *device = cdev->devdata; - int state; int result; + int acpi_state; if (!device) return -EINVAL; - result = acpi_bus_get_power(device->handle, &state); + result = acpi_bus_get_power(device->handle, &acpi_state); if (result) return result; - return sprintf(buf, "%s\n", state == ACPI_STATE_D3 ? "0" : - (state == ACPI_STATE_D0 ? "1" : "unknown")); + *state = (acpi_state == ACPI_STATE_D3 ? 0 : + (acpi_state == ACPI_STATE_D0 ? 1 : -1)); + return 0; } static int -fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state) +fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) { struct acpi_device *device = cdev->devdata; int result; diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c index b1eb376fae45..0e47e299a9ac 100644 --- a/drivers/acpi/processor_thermal.c +++ b/drivers/acpi/processor_thermal.c @@ -373,7 +373,8 @@ static int acpi_processor_max_state(struct acpi_processor *pr) return max_state; } static int -processor_get_max_state(struct thermal_cooling_device *cdev, char *buf) +processor_get_max_state(struct thermal_cooling_device *cdev, + unsigned long *state) { struct acpi_device *device = cdev->devdata; struct acpi_processor *pr = acpi_driver_data(device); @@ -381,28 +382,29 @@ processor_get_max_state(struct thermal_cooling_device *cdev, char *buf) if (!device || !pr) return -EINVAL; - return sprintf(buf, "%d\n", acpi_processor_max_state(pr)); + *state = acpi_processor_max_state(pr); + return 0; } static int -processor_get_cur_state(struct thermal_cooling_device *cdev, char *buf) +processor_get_cur_state(struct thermal_cooling_device *cdev, + unsigned long *cur_state) { struct acpi_device *device = cdev->devdata; struct acpi_processor *pr = acpi_driver_data(device); - int cur_state; if (!device || !pr) return -EINVAL; - cur_state = cpufreq_get_cur_state(pr->id); + *cur_state = cpufreq_get_cur_state(pr->id); if (pr->flags.throttling) - cur_state += pr->throttling.state; - - return sprintf(buf, "%d\n", cur_state); + *cur_state += pr->throttling.state; + return 0; } static int -processor_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state) +processor_set_cur_state(struct thermal_cooling_device *cdev, + unsigned long state) { struct acpi_device *device = cdev->devdata; struct acpi_processor *pr = acpi_driver_data(device); diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 99e6f1f8ea45..6b959976b7a4 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -37,11 +37,11 @@ #include <linux/init.h> #include <linux/types.h> #include <linux/proc_fs.h> -#include <linux/timer.h> #include <linux/jiffies.h> #include <linux/kmod.h> #include <linux/seq_file.h> #include <linux/reboot.h> +#include <linux/device.h> #include <asm/uaccess.h> #include <linux/thermal.h> #include <acpi/acpi_bus.h> @@ -190,7 +190,6 @@ struct acpi_thermal { struct acpi_thermal_state state; struct acpi_thermal_trips trips; struct acpi_handle_list devices; - struct timer_list timer; struct thermal_zone_device *thermal_zone; int tz_enabled; struct mutex lock; @@ -290,6 +289,11 @@ static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds) tz->polling_frequency = seconds * 10; /* Convert value to deci-seconds */ + tz->thermal_zone->polling_delay = seconds * 1000; + + if (tz->tz_enabled) + thermal_zone_device_update(tz->thermal_zone); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Polling frequency set to %lu seconds\n", tz->polling_frequency/10)); @@ -569,392 +573,18 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) return acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); } -static int acpi_thermal_critical(struct acpi_thermal *tz) -{ - if (!tz || !tz->trips.critical.flags.valid) - return -EINVAL; - - if (tz->temperature >= tz->trips.critical.temperature) { - printk(KERN_WARNING PREFIX "Critical trip point\n"); - tz->trips.critical.flags.enabled = 1; - } else if (tz->trips.critical.flags.enabled) - tz->trips.critical.flags.enabled = 0; - - acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL, - tz->trips.critical.flags.enabled); - acpi_bus_generate_netlink_event(tz->device->pnp.device_class, - dev_name(&tz->device->dev), - ACPI_THERMAL_NOTIFY_CRITICAL, - tz->trips.critical.flags.enabled); - - /* take no action if nocrt is set */ - if(!nocrt) { - printk(KERN_EMERG - "Critical temperature reached (%ld C), shutting down.\n", - KELVIN_TO_CELSIUS(tz->temperature)); - orderly_poweroff(true); - } - - return 0; -} - -static int acpi_thermal_hot(struct acpi_thermal *tz) -{ - if (!tz || !tz->trips.hot.flags.valid) - return -EINVAL; - - if (tz->temperature >= tz->trips.hot.temperature) { - printk(KERN_WARNING PREFIX "Hot trip point\n"); - tz->trips.hot.flags.enabled = 1; - } else if (tz->trips.hot.flags.enabled) - tz->trips.hot.flags.enabled = 0; - - acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_HOT, - tz->trips.hot.flags.enabled); - acpi_bus_generate_netlink_event(tz->device->pnp.device_class, - dev_name(&tz->device->dev), - ACPI_THERMAL_NOTIFY_HOT, - tz->trips.hot.flags.enabled); - - /* TBD: Call user-mode "sleep(S4)" function if nocrt is cleared */ - - return 0; -} - -static void acpi_thermal_passive(struct acpi_thermal *tz) -{ - int result = 1; - struct acpi_thermal_passive *passive = NULL; - int trend = 0; - int i = 0; - - - if (!tz || !tz->trips.passive.flags.valid) - return; - - passive = &(tz->trips.passive); - - /* - * Above Trip? - * ----------- - * Calculate the thermal trend (using the passive cooling equation) - * and modify the performance limit for all passive cooling devices - * accordingly. Note that we assume symmetry. - */ - if (tz->temperature >= passive->temperature) { - trend = - (passive->tc1 * (tz->temperature - tz->last_temperature)) + - (passive->tc2 * (tz->temperature - passive->temperature)); - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "trend[%d]=(tc1[%lu]*(tmp[%lu]-last[%lu]))+(tc2[%lu]*(tmp[%lu]-psv[%lu]))\n", - trend, passive->tc1, tz->temperature, - tz->last_temperature, passive->tc2, - tz->temperature, passive->temperature)); - passive->flags.enabled = 1; - /* Heating up? */ - if (trend > 0) - for (i = 0; i < passive->devices.count; i++) - acpi_processor_set_thermal_limit(passive-> - devices. - handles[i], - ACPI_PROCESSOR_LIMIT_INCREMENT); - /* Cooling off? */ - else if (trend < 0) { - for (i = 0; i < passive->devices.count; i++) - /* - * assume that we are on highest - * freq/lowest thrott and can leave - * passive mode, even in error case - */ - if (!acpi_processor_set_thermal_limit - (passive->devices.handles[i], - ACPI_PROCESSOR_LIMIT_DECREMENT)) - result = 0; - /* - * Leave cooling mode, even if the temp might - * higher than trip point This is because some - * machines might have long thermal polling - * frequencies (tsp) defined. We will fall back - * into passive mode in next cycle (probably quicker) - */ - if (result) { - passive->flags.enabled = 0; - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Disabling passive cooling, still above threshold," - " but we are cooling down\n")); - } - } - return; - } - - /* - * Below Trip? - * ----------- - * Implement passive cooling hysteresis to slowly increase performance - * and avoid thrashing around the passive trip point. Note that we - * assume symmetry. - */ - if (!passive->flags.enabled) - return; - for (i = 0; i < passive->devices.count; i++) - if (!acpi_processor_set_thermal_limit - (passive->devices.handles[i], - ACPI_PROCESSOR_LIMIT_DECREMENT)) - result = 0; - if (result) { - passive->flags.enabled = 0; - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Disabling passive cooling (zone is cool)\n")); - } -} - -static void acpi_thermal_active(struct acpi_thermal *tz) -{ - int result = 0; - struct acpi_thermal_active *active = NULL; - int i = 0; - int j = 0; - unsigned long maxtemp = 0; - - - if (!tz) - return; - - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - active = &(tz->trips.active[i]); - if (!active || !active->flags.valid) - break; - if (tz->temperature >= active->temperature) { - /* - * Above Threshold? - * ---------------- - * If not already enabled, turn ON all cooling devices - * associated with this active threshold. - */ - if (active->temperature > maxtemp) - tz->state.active_index = i; - maxtemp = active->temperature; - if (active->flags.enabled) - continue; - for (j = 0; j < active->devices.count; j++) { - result = - acpi_bus_set_power(active->devices. - handles[j], - ACPI_STATE_D0); - if (result) { - printk(KERN_WARNING PREFIX - "Unable to turn cooling device [%p] 'on'\n", - active->devices. - handles[j]); - continue; - } - active->flags.enabled = 1; - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Cooling device [%p] now 'on'\n", - active->devices.handles[j])); - } - continue; - } - if (!active->flags.enabled) - continue; - /* - * Below Threshold? - * ---------------- - * Turn OFF all cooling devices associated with this - * threshold. - */ - for (j = 0; j < active->devices.count; j++) { - result = acpi_bus_set_power(active->devices.handles[j], - ACPI_STATE_D3); - if (result) { - printk(KERN_WARNING PREFIX - "Unable to turn cooling device [%p] 'off'\n", - active->devices.handles[j]); - continue; - } - active->flags.enabled = 0; - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Cooling device [%p] now 'off'\n", - active->devices.handles[j])); - } - } -} - -static void acpi_thermal_check(void *context); - -static void acpi_thermal_run(unsigned long data) -{ - struct acpi_thermal *tz = (struct acpi_thermal *)data; - if (!tz->zombie) - acpi_os_execute(OSL_GPE_HANDLER, acpi_thermal_check, (void *)data); -} - -static void acpi_thermal_active_off(void *data) -{ - int result = 0; - struct acpi_thermal *tz = data; - int i = 0; - int j = 0; - struct acpi_thermal_active *active = NULL; - - if (!tz) { - printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); - return; - } - - result = acpi_thermal_get_temperature(tz); - if (result) - return; - - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - active = &(tz->trips.active[i]); - if (!active || !active->flags.valid) - break; - if (tz->temperature >= active->temperature) { - /* - * If the thermal temperature is greater than the - * active threshod, unnecessary to turn off the - * the active cooling device. - */ - continue; - } - /* - * Below Threshold? - * ---------------- - * Turn OFF all cooling devices associated with this - * threshold. - */ - for (j = 0; j < active->devices.count; j++) - result = acpi_bus_set_power(active->devices.handles[j], - ACPI_STATE_D3); - } -} - static void acpi_thermal_check(void *data) { - int result = 0; struct acpi_thermal *tz = data; - unsigned long sleep_time = 0; - unsigned long timeout_jiffies = 0; - int i = 0; - struct acpi_thermal_state state; - - - if (!tz) { - printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); - return; - } - - /* Check if someone else is already running */ - if (!mutex_trylock(&tz->lock)) - return; - - state = tz->state; - - result = acpi_thermal_get_temperature(tz); - if (result) - goto unlock; - - if (!tz->tz_enabled) - goto unlock; - - memset(&tz->state, 0, sizeof(tz->state)); - - /* - * Check Trip Points - * ----------------- - * Compare the current temperature to the trip point values to see - * if we've entered one of the thermal policy states. Note that - * this function determines when a state is entered, but the - * individual policy decides when it is exited (e.g. hysteresis). - */ - if (tz->trips.critical.flags.valid) - state.critical |= - (tz->temperature >= tz->trips.critical.temperature); - if (tz->trips.hot.flags.valid) - state.hot |= (tz->temperature >= tz->trips.hot.temperature); - if (tz->trips.passive.flags.valid) - state.passive |= - (tz->temperature >= tz->trips.passive.temperature); - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) - if (tz->trips.active[i].flags.valid) - state.active |= - (tz->temperature >= - tz->trips.active[i].temperature); - - /* - * Invoke Policy - * ------------- - * Separated from the above check to allow individual policy to - * determine when to exit a given state. - */ - if (state.critical) - acpi_thermal_critical(tz); - if (state.hot) - acpi_thermal_hot(tz); - if (state.passive) - acpi_thermal_passive(tz); - if (state.active) - acpi_thermal_active(tz); - - /* - * Calculate State - * --------------- - * Again, separated from the above two to allow independent policy - * decisions. - */ - tz->state.critical = tz->trips.critical.flags.enabled; - tz->state.hot = tz->trips.hot.flags.enabled; - tz->state.passive = tz->trips.passive.flags.enabled; - tz->state.active = 0; - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) - tz->state.active |= tz->trips.active[i].flags.enabled; - - /* - * Calculate Sleep Time - * -------------------- - * If we're in the passive state, use _TSP's value. Otherwise - * use the default polling frequency (e.g. _TZP). If no polling - * frequency is specified then we'll wait forever (at least until - * a thermal event occurs). Note that _TSP and _TZD values are - * given in 1/10th seconds (we must covert to milliseconds). - */ - if (tz->state.passive) { - sleep_time = tz->trips.passive.tsp * 100; - timeout_jiffies = jiffies + (HZ * sleep_time) / 1000; - } else if (tz->polling_frequency > 0) { - sleep_time = tz->polling_frequency * 100; - timeout_jiffies = round_jiffies(jiffies + (HZ * sleep_time) / 1000); - } - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: temperature[%lu] sleep[%lu]\n", - tz->name, tz->temperature, sleep_time)); - - /* - * Schedule Next Poll - * ------------------ - */ - if (!sleep_time) { - if (timer_pending(&(tz->timer))) - del_timer(&(tz->timer)); - } else { - if (timer_pending(&(tz->timer))) - mod_timer(&(tz->timer), timeout_jiffies); - else { - tz->timer.data = (unsigned long)tz; - tz->timer.function = acpi_thermal_run; - tz->timer.expires = timeout_jiffies; - add_timer(&(tz->timer)); - } - } - unlock: - mutex_unlock(&tz->lock); + thermal_zone_device_update(tz->thermal_zone); } /* sys I/F for generic thermal sysfs support */ #define KELVIN_TO_MILLICELSIUS(t) (t * 100 - 273200) -static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf) +static int thermal_get_temp(struct thermal_zone_device *thermal, + unsigned long *temp) { struct acpi_thermal *tz = thermal->devdata; int result; @@ -966,25 +596,28 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf) if (result) return result; - return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(tz->temperature)); + *temp = KELVIN_TO_MILLICELSIUS(tz->temperature); + return 0; } static const char enabled[] = "kernel"; static const char disabled[] = "user"; static int thermal_get_mode(struct thermal_zone_device *thermal, - char *buf) + enum thermal_device_mode *mode) { struct acpi_thermal *tz = thermal->devdata; if (!tz) return -EINVAL; - return sprintf(buf, "%s\n", tz->tz_enabled ? - enabled : disabled); + *mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED : + THERMAL_DEVICE_DISABLED; + + return 0; } static int thermal_set_mode(struct thermal_zone_device *thermal, - const char *buf) + enum thermal_device_mode mode) { struct acpi_thermal *tz = thermal->devdata; int enable; @@ -995,9 +628,9 @@ static int thermal_set_mode(struct thermal_zone_device *thermal, /* * enable/disable thermal management from ACPI thermal driver */ - if (!strncmp(buf, enabled, sizeof enabled - 1)) + if (mode == THERMAL_DEVICE_ENABLED) enable = 1; - else if (!strncmp(buf, disabled, sizeof disabled - 1)) + else if (mode == THERMAL_DEVICE_DISABLED) enable = 0; else return -EINVAL; @@ -1013,7 +646,7 @@ static int thermal_set_mode(struct thermal_zone_device *thermal, } static int thermal_get_trip_type(struct thermal_zone_device *thermal, - int trip, char *buf) + int trip, enum thermal_trip_type *type) { struct acpi_thermal *tz = thermal->devdata; int i; @@ -1022,27 +655,35 @@ static int thermal_get_trip_type(struct thermal_zone_device *thermal, return -EINVAL; if (tz->trips.critical.flags.valid) { - if (!trip) - return sprintf(buf, "critical\n"); + if (!trip) { + *type = THERMAL_TRIP_CRITICAL; + return 0; + } trip--; } if (tz->trips.hot.flags.valid) { - if (!trip) - return sprintf(buf, "hot\n"); + if (!trip) { + *type = THERMAL_TRIP_HOT; + return 0; + } trip--; } if (tz->trips.passive.flags.valid) { - if (!trip) - return sprintf(buf, "passive\n"); + if (!trip) { + *type = THERMAL_TRIP_PASSIVE; + return 0; + } trip--; } for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].flags.valid; i++) { - if (!trip) - return sprintf(buf, "active%d\n", i); + if (!trip) { + *type = THERMAL_TRIP_ACTIVE; + return 0; + } trip--; } @@ -1050,7 +691,7 @@ static int thermal_get_trip_type(struct thermal_zone_device *thermal, } static int thermal_get_trip_temp(struct thermal_zone_device *thermal, - int trip, char *buf) + int trip, unsigned long *temp) { struct acpi_thermal *tz = thermal->devdata; int i; @@ -1059,31 +700,39 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal, return -EINVAL; if (tz->trips.critical.flags.valid) { - if (!trip) - return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS( - tz->trips.critical.temperature)); + if (!trip) { + *temp = KELVIN_TO_MILLICELSIUS( + tz->trips.critical.temperature); + return 0; + } trip--; } if (tz->trips.hot.flags.valid) { - if (!trip) - return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS( - tz->trips.hot.temperature)); + if (!trip) { + *temp = KELVIN_TO_MILLICELSIUS( + tz->trips.hot.temperature); + return 0; + } trip--; } if (tz->trips.passive.flags.valid) { - if (!trip) - return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS( - tz->trips.passive.temperature)); + if (!trip) { + *temp = KELVIN_TO_MILLICELSIUS( + tz->trips.passive.temperature); + return 0; + } trip--; } for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].flags.valid; i++) { - if (!trip) - return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS( - tz->trips.active[i].temperature)); + if (!trip) { + *temp = KELVIN_TO_MILLICELSIUS( + tz->trips.active[i].temperature); + return 0; + } trip--; } @@ -1102,6 +751,29 @@ static int thermal_get_crit_temp(struct thermal_zone_device *thermal, return -EINVAL; } +static int thermal_notify(struct thermal_zone_device *thermal, int trip, + enum thermal_trip_type trip_type) +{ + u8 type = 0; + struct acpi_thermal *tz = thermal->devdata; + + if (trip_type == THERMAL_TRIP_CRITICAL) + type = ACPI_THERMAL_NOTIFY_CRITICAL; + else if (trip_type == THERMAL_TRIP_HOT) + type = ACPI_THERMAL_NOTIFY_HOT; + else + return 0; + + acpi_bus_generate_proc_event(tz->device, type, 1); + acpi_bus_generate_netlink_event(tz->device->pnp.device_class, + dev_name(&tz->device->dev), type, 1); + + if (trip_type == THERMAL_TRIP_CRITICAL && nocrt) + return 1; + + return 0; +} + typedef int (*cb)(struct thermal_zone_device *, int, struct thermal_cooling_device *); static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, @@ -1194,6 +866,7 @@ static struct thermal_zone_device_ops acpi_thermal_zone_ops = { .get_trip_type = thermal_get_trip_type, .get_trip_temp = thermal_get_trip_temp, .get_crit_temp = thermal_get_crit_temp, + .notify = thermal_notify, }; static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) @@ -1214,8 +887,21 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].flags.valid; i++, trips++); - tz->thermal_zone = thermal_zone_device_register("acpitz", - trips, tz, &acpi_thermal_zone_ops); + + if (tz->trips.passive.flags.valid) + tz->thermal_zone = + thermal_zone_device_register("acpitz", trips, tz, + &acpi_thermal_zone_ops, + tz->trips.passive.tc1, + tz->trips.passive.tc2, + tz->trips.passive.tsp*100, + tz->polling_frequency*100); + else + tz->thermal_zone = + thermal_zone_device_register("acpitz", trips, tz, + &acpi_thermal_zone_ops, + 0, 0, 0, + tz->polling_frequency); if (IS_ERR(tz->thermal_zone)) return -ENODEV; @@ -1447,13 +1133,13 @@ static int acpi_thermal_polling_seq_show(struct seq_file *seq, void *offset) if (!tz) goto end; - if (!tz->polling_frequency) { + if (!tz->thermal_zone->polling_delay) { seq_puts(seq, "<polling disabled>\n"); goto end; } - seq_printf(seq, "polling frequency: %lu seconds\n", - (tz->polling_frequency / 10)); + seq_printf(seq, "polling frequency: %d seconds\n", + (tz->thermal_zone->polling_delay / 1000)); end: return 0; @@ -1683,12 +1369,6 @@ static int acpi_thermal_add(struct acpi_device *device) if (result) goto unregister_thermal_zone; - init_timer(&tz->timer); - - acpi_thermal_active_off(tz); - - acpi_thermal_check(tz); - status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, acpi_thermal_notify, tz); @@ -1717,36 +1397,15 @@ static int acpi_thermal_remove(struct acpi_device *device, int type) acpi_status status = AE_OK; struct acpi_thermal *tz = NULL; - if (!device || !acpi_driver_data(device)) return -EINVAL; tz = acpi_driver_data(device); - /* avoid timer adding new defer task */ - tz->zombie = 1; - /* wait for running timer (on other CPUs) finish */ - del_timer_sync(&(tz->timer)); - /* synchronize deferred task */ - acpi_os_wait_events_complete(NULL); - /* deferred task may reinsert timer */ - del_timer_sync(&(tz->timer)); - status = acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, acpi_thermal_notify); - /* Terminate policy */ - if (tz->trips.passive.flags.valid && tz->trips.passive.flags.enabled) { - tz->trips.passive.flags.enabled = 0; - acpi_thermal_passive(tz); - } - if (tz->trips.active[0].flags.valid - && tz->trips.active[0].flags.enabled) { - tz->trips.active[0].flags.enabled = 0; - acpi_thermal_active(tz); - } - acpi_thermal_remove_fs(device); acpi_thermal_unregister_thermal_zone(tz); mutex_destroy(&tz->lock); diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index bb5ed059114a..5259d502add6 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -358,32 +358,36 @@ static struct output_properties acpi_output_properties = { /* thermal cooling device callbacks */ -static int video_get_max_state(struct thermal_cooling_device *cdev, char *buf) +static int video_get_max_state(struct thermal_cooling_device *cdev, unsigned + long *state) { struct acpi_device *device = cdev->devdata; struct acpi_video_device *video = acpi_driver_data(device); - return sprintf(buf, "%d\n", video->brightness->count - 3); + *state = video->brightness->count - 3; + return 0; } -static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf) +static int video_get_cur_state(struct thermal_cooling_device *cdev, unsigned + long *state) { struct acpi_device *device = cdev->devdata; struct acpi_video_device *video = acpi_driver_data(device); unsigned long long level; - int state; + int offset; acpi_video_device_lcd_get_level_current(video, &level); - for (state = 2; state < video->brightness->count; state++) - if (level == video->brightness->levels[state]) - return sprintf(buf, "%d\n", - video->brightness->count - state - 1); + for (offset = 2; offset < video->brightness->count; offset++) + if (level == video->brightness->levels[offset]) { + *state = video->brightness->count - offset - 1; + return 0; + } return -EINVAL; } static int -video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state) +video_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) { struct acpi_device *device = cdev->devdata; struct acpi_video_device *video = acpi_driver_data(device); diff --git a/drivers/platform/x86/intel_menlow.c b/drivers/platform/x86/intel_menlow.c index 27b7662955bb..29432a50be45 100644 --- a/drivers/platform/x86/intel_menlow.c +++ b/drivers/platform/x86/intel_menlow.c @@ -57,8 +57,8 @@ MODULE_LICENSE("GPL"); * In that case max_cstate would be n-1 * GTHS returning '0' would mean that no bandwidth control states are supported */ -static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev, - unsigned long *max_state) +static int memory_get_max_bandwidth(struct thermal_cooling_device *cdev, + unsigned long *max_state) { struct acpi_device *device = cdev->devdata; acpi_handle handle = device->handle; @@ -83,22 +83,12 @@ static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev, return 0; } -static int memory_get_max_bandwidth(struct thermal_cooling_device *cdev, - char *buf) -{ - unsigned long value; - if (memory_get_int_max_bandwidth(cdev, &value)) - return -EINVAL; - - return sprintf(buf, "%ld\n", value); -} - static int memory_get_cur_bandwidth(struct thermal_cooling_device *cdev, - char *buf) + unsigned long *value) { struct acpi_device *device = cdev->devdata; acpi_handle handle = device->handle; - unsigned long long value; + unsigned long long result; struct acpi_object_list arg_list; union acpi_object arg; acpi_status status = AE_OK; @@ -108,15 +98,16 @@ static int memory_get_cur_bandwidth(struct thermal_cooling_device *cdev, arg.type = ACPI_TYPE_INTEGER; arg.integer.value = MEMORY_ARG_CUR_BANDWIDTH; status = acpi_evaluate_integer(handle, MEMORY_GET_BANDWIDTH, - &arg_list, &value); + &arg_list, &result); if (ACPI_FAILURE(status)) return -EFAULT; - return sprintf(buf, "%llu\n", value); + *value = result; + return 0; } static int memory_set_cur_bandwidth(struct thermal_cooling_device *cdev, - unsigned int state) + unsigned long state) { struct acpi_device *device = cdev->devdata; acpi_handle handle = device->handle; @@ -126,7 +117,7 @@ static int memory_set_cur_bandwidth(struct thermal_cooling_device *cdev, unsigned long long temp; unsigned long max_state; - if (memory_get_int_max_bandwidth(cdev, &max_state)) + if (memory_get_max_bandwidth(cdev, &max_state)) return -EFAULT; if (state > max_state) @@ -142,7 +133,7 @@ static int memory_set_cur_bandwidth(struct thermal_cooling_device *cdev, &temp); printk(KERN_INFO - "Bandwidth value was %d: status is %d\n", state, status); + "Bandwidth value was %ld: status is %d\n", state, status); if (ACPI_FAILURE(status)) return -EFAULT; diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c index 8171ca17b936..d0b093b66adc 100644 --- a/drivers/thermal/thermal_sys.c +++ b/drivers/thermal/thermal_sys.c @@ -30,6 +30,7 @@ #include <linux/idr.h> #include <linux/thermal.h> #include <linux/spinlock.h> +#include <linux/reboot.h> MODULE_AUTHOR("Zhang Rui"); MODULE_DESCRIPTION("Generic thermal management sysfs support"); @@ -104,22 +105,36 @@ static ssize_t temp_show(struct device *dev, struct device_attribute *attr, char *buf) { struct thermal_zone_device *tz = to_thermal_zone(dev); + long temperature; + int ret; if (!tz->ops->get_temp) return -EPERM; - return tz->ops->get_temp(tz, buf); + ret = tz->ops->get_temp(tz, &temperature); + + if (ret) + return ret; + + return sprintf(buf, "%ld\n", temperature); } static ssize_t mode_show(struct device *dev, struct device_attribute *attr, char *buf) { struct thermal_zone_device *tz = to_thermal_zone(dev); + enum thermal_device_mode mode; + int result; if (!tz->ops->get_mode) return -EPERM; - return tz->ops->get_mode(tz, buf); + result = tz->ops->get_mode(tz, &mode); + if (result) + return result; + + return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled" + : "disabled"); } static ssize_t @@ -132,7 +147,13 @@ mode_store(struct device *dev, struct device_attribute *attr, if (!tz->ops->set_mode) return -EPERM; - result = tz->ops->set_mode(tz, buf); + if (!strncmp(buf, "enabled", sizeof("enabled"))) + result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED); + else if (!strncmp(buf, "disabled", sizeof("disabled"))) + result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED); + else + result = -EINVAL; + if (result) return result; @@ -144,7 +165,8 @@ trip_point_type_show(struct device *dev, struct device_attribute *attr, char *buf) { struct thermal_zone_device *tz = to_thermal_zone(dev); - int trip; + enum thermal_trip_type type; + int trip, result; if (!tz->ops->get_trip_type) return -EPERM; @@ -152,7 +174,22 @@ trip_point_type_show(struct device *dev, struct device_attribute *attr, if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip)) return -EINVAL; - return tz->ops->get_trip_type(tz, trip, buf); + result = tz->ops->get_trip_type(tz, trip, &type); + if (result) + return result; + + switch (type) { + case THERMAL_TRIP_CRITICAL: + return sprintf(buf, "critical"); + case THERMAL_TRIP_HOT: + return sprintf(buf, "hot"); + case THERMAL_TRIP_PASSIVE: + return sprintf(buf, "passive"); + case THERMAL_TRIP_ACTIVE: + return sprintf(buf, "active"); + default: + return sprintf(buf, "unknown"); + } } static ssize_t @@ -160,7 +197,8 @@ trip_point_temp_show(struct device *dev, struct device_attribute *attr, char *buf) { struct thermal_zone_device *tz = to_thermal_zone(dev); - int trip; + int trip, ret; + long temperature; if (!tz->ops->get_trip_temp) return -EPERM; @@ -168,12 +206,77 @@ trip_point_temp_show(struct device *dev, struct device_attribute *attr, if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip)) return -EINVAL; - return tz->ops->get_trip_temp(tz, trip, buf); + ret = tz->ops->get_trip_temp(tz, trip, &temperature); + + if (ret) + return ret; + + return sprintf(buf, "%ld\n", temperature); +} + +static ssize_t +passive_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct thermal_zone_device *tz = to_thermal_zone(dev); + struct thermal_cooling_device *cdev = NULL; + int state; + + if (!sscanf(buf, "%d\n", &state)) + return -EINVAL; + + if (state && !tz->forced_passive) { + mutex_lock(&thermal_list_lock); + list_for_each_entry(cdev, &thermal_cdev_list, node) { + if (!strncmp("Processor", cdev->type, + sizeof("Processor"))) + thermal_zone_bind_cooling_device(tz, + THERMAL_TRIPS_NONE, + cdev); + } + mutex_unlock(&thermal_list_lock); + } else if (!state && tz->forced_passive) { + mutex_lock(&thermal_list_lock); + list_for_each_entry(cdev, &thermal_cdev_list, node) { + if (!strncmp("Processor", cdev->type, + sizeof("Processor"))) + thermal_zone_unbind_cooling_device(tz, + THERMAL_TRIPS_NONE, + cdev); + } + mutex_unlock(&thermal_list_lock); + } + + tz->tc1 = 1; + tz->tc2 = 1; + + if (!tz->passive_delay) + tz->passive_delay = 1000; + + if (!tz->polling_delay) + tz->polling_delay = 10000; + + tz->forced_passive = state; + + thermal_zone_device_update(tz); + + return count; +} + +static ssize_t +passive_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct thermal_zone_device *tz = to_thermal_zone(dev); + + return sprintf(buf, "%d\n", tz->forced_passive); } static DEVICE_ATTR(type, 0444, type_show, NULL); static DEVICE_ATTR(temp, 0444, temp_show, NULL); static DEVICE_ATTR(mode, 0644, mode_show, mode_store); +static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, \ + passive_store); static struct device_attribute trip_point_attrs[] = { __ATTR(trip_point_0_type, 0444, trip_point_type_show, NULL), @@ -236,8 +339,13 @@ thermal_cooling_device_max_state_show(struct device *dev, struct device_attribute *attr, char *buf) { struct thermal_cooling_device *cdev = to_cooling_device(dev); + unsigned long state; + int ret; - return cdev->ops->get_max_state(cdev, buf); + ret = cdev->ops->get_max_state(cdev, &state); + if (ret) + return ret; + return sprintf(buf, "%ld\n", state); } static ssize_t @@ -245,8 +353,13 @@ thermal_cooling_device_cur_state_show(struct device *dev, struct device_attribute *attr, char *buf) { struct thermal_cooling_device *cdev = to_cooling_device(dev); + unsigned long state; + int ret; - return cdev->ops->get_cur_state(cdev, buf); + ret = cdev->ops->get_cur_state(cdev, &state); + if (ret) + return ret; + return sprintf(buf, "%ld\n", state); } static ssize_t @@ -255,10 +368,10 @@ thermal_cooling_device_cur_state_store(struct device *dev, const char *buf, size_t count) { struct thermal_cooling_device *cdev = to_cooling_device(dev); - int state; + unsigned long state; int result; - if (!sscanf(buf, "%d\n", &state)) + if (!sscanf(buf, "%ld\n", &state)) return -EINVAL; if (state < 0) @@ -312,13 +425,20 @@ static DEVICE_ATTR(name, 0444, name_show, NULL); static ssize_t temp_input_show(struct device *dev, struct device_attribute *attr, char *buf) { + long temperature; + int ret; struct thermal_hwmon_attr *hwmon_attr = container_of(attr, struct thermal_hwmon_attr, attr); struct thermal_zone_device *tz = container_of(hwmon_attr, struct thermal_zone_device, temp_input); - return tz->ops->get_temp(tz, buf); + ret = tz->ops->get_temp(tz, &temperature); + + if (ret) + return ret; + + return sprintf(buf, "%ld\n", temperature); } static ssize_t @@ -330,8 +450,14 @@ temp_crit_show(struct device *dev, struct device_attribute *attr, struct thermal_zone_device *tz = container_of(hwmon_attr, struct thermal_zone_device, temp_crit); + long temperature; + int ret; + + ret = tz->ops->get_trip_temp(tz, 0, &temperature); + if (ret) + return ret; - return tz->ops->get_trip_temp(tz, 0, buf); + return sprintf(buf, "%ld\n", temperature); } @@ -452,6 +578,97 @@ thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz) } #endif +static void thermal_zone_device_set_polling(struct thermal_zone_device *tz, + int delay) +{ + cancel_delayed_work(&(tz->poll_queue)); + + if (!delay) + return; + + if (delay > 1000) + schedule_delayed_work(&(tz->poll_queue), + round_jiffies(msecs_to_jiffies(delay))); + else + schedule_delayed_work(&(tz->poll_queue), + msecs_to_jiffies(delay)); +} + +static void thermal_zone_device_passive(struct thermal_zone_device *tz, + int temp, int trip_temp, int trip) +{ + int trend = 0; + struct thermal_cooling_device_instance *instance; + struct thermal_cooling_device *cdev; + long state, max_state; + + /* + * Above Trip? + * ----------- + * Calculate the thermal trend (using the passive cooling equation) + * and modify the performance limit for all passive cooling devices + * accordingly. Note that we assume symmetry. + */ + if (temp >= trip_temp) { + tz->passive = true; + + trend = (tz->tc1 * (temp - tz->last_temperature)) + + (tz->tc2 * (temp - trip_temp)); + + /* Heating up? */ + if (trend > 0) { + list_for_each_entry(instance, &tz->cooling_devices, + node) { + if (instance->trip != trip) + continue; + cdev = instance->cdev; + cdev->ops->get_cur_state(cdev, &state); + cdev->ops->get_max_state(cdev, &max_state); + if (state++ < max_state) + cdev->ops->set_cur_state(cdev, state); + } + } else if (trend < 0) { /* Cooling off? */ + list_for_each_entry(instance, &tz->cooling_devices, + node) { + if (instance->trip != trip) + continue; + cdev = instance->cdev; + cdev->ops->get_cur_state(cdev, &state); + cdev->ops->get_max_state(cdev, &max_state); + if (state > 0) + cdev->ops->set_cur_state(cdev, --state); + } + } + return; + } + + /* + * Below Trip? + * ----------- + * Implement passive cooling hysteresis to slowly increase performance + * and avoid thrashing around the passive trip point. Note that we + * assume symmetry. + */ + list_for_each_entry(instance, &tz->cooling_devices, node) { + if (instance->trip != trip) + continue; + cdev = instance->cdev; + cdev->ops->get_cur_state(cdev, &state); + cdev->ops->get_max_state(cdev, &max_state); + if (state > 0) + cdev->ops->set_cur_state(cdev, --state); + if (state == 0) + tz->passive = false; + } +} + +static void thermal_zone_device_check(struct work_struct *work) +{ + struct thermal_zone_device *tz = container_of(work, struct + thermal_zone_device, + poll_queue.work); + thermal_zone_device_update(tz); +} /** * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone @@ -722,25 +939,113 @@ void thermal_cooling_device_unregister(struct EXPORT_SYMBOL(thermal_cooling_device_unregister); /** + * thermal_zone_device_update - force an update of a thermal zone's state + * @ttz: the thermal zone to update + */ + +void thermal_zone_device_update(struct thermal_zone_device *tz) +{ + int count, ret = 0; + long temp, trip_temp; + enum thermal_trip_type trip_type; + struct thermal_cooling_device_instance *instance; + struct thermal_cooling_device *cdev; + + mutex_lock(&tz->lock); + + tz->ops->get_temp(tz, &temp); + + for (count = 0; count < tz->trips; count++) { + tz->ops->get_trip_type(tz, count, &trip_type); + tz->ops->get_trip_temp(tz, count, &trip_temp); + + switch (trip_type) { + case THERMAL_TRIP_CRITICAL: + if (temp > trip_temp) { + if (tz->ops->notify) + ret = tz->ops->notify(tz, count, + trip_type); + if (!ret) { + printk(KERN_EMERG + "Critical temperature reached (%ld C), shutting down.\n", + temp/1000); + orderly_poweroff(true); + } + } + break; + case THERMAL_TRIP_HOT: + if (temp > trip_temp) + if (tz->ops->notify) + tz->ops->notify(tz, count, trip_type); + break; + case THERMAL_TRIP_ACTIVE: + list_for_each_entry(instance, &tz->cooling_devices, + node) { + if (instance->trip != count) + continue; + + cdev = instance->cdev; + + if (temp > trip_temp) + cdev->ops->set_cur_state(cdev, 1); + else + cdev->ops->set_cur_state(cdev, 0); + } + break; + case THERMAL_TRIP_PASSIVE: + if (temp > trip_temp || tz->passive) + thermal_zone_device_passive(tz, temp, + trip_temp, count); + break; + } + } + + if (tz->forced_passive) + thermal_zone_device_passive(tz, temp, tz->forced_passive, + THERMAL_TRIPS_NONE); + + tz->last_temperature = temp; + if (tz->passive) + thermal_zone_device_set_polling(tz, tz->passive_delay); + else if (tz->polling_delay) + thermal_zone_device_set_polling(tz, tz->polling_delay); + mutex_unlock(&tz->lock); +} +EXPORT_SYMBOL(thermal_zone_device_update); + +/** * thermal_zone_device_register - register a new thermal zone device * @type: the thermal zone device type * @trips: the number of trip points the thermal zone support * @devdata: private device data * @ops: standard thermal zone device callbacks + * @tc1: thermal coefficient 1 for passive calculations + * @tc2: thermal coefficient 2 for passive calculations + * @passive_delay: number of milliseconds to wait between polls when + * performing passive cooling + * @polling_delay: number of milliseconds to wait between polls when checking + * whether trip points have been crossed (0 for interrupt + * driven systems) * * thermal_zone_device_unregister() must be called when the device is no - * longer needed. + * longer needed. The passive cooling formula uses tc1 and tc2 as described in + * section 11.1.5.1 of the ACPI specification 3.0. */ struct thermal_zone_device *thermal_zone_device_register(char *type, int trips, void *devdata, struct thermal_zone_device_ops - *ops) + *ops, int tc1, int + tc2, + int passive_delay, + int polling_delay) { struct thermal_zone_device *tz; struct thermal_cooling_device *pos; + enum thermal_trip_type trip_type; int result; int count; + int passive = 0; if (strlen(type) >= THERMAL_NAME_LENGTH) return ERR_PTR(-EINVAL); @@ -769,6 +1074,11 @@ struct thermal_zone_device *thermal_zone_device_register(char *type, tz->device.class = &thermal_class; tz->devdata = devdata; tz->trips = trips; + tz->tc1 = tc1; + tz->tc2 = tc2; + tz->passive_delay = passive_delay; + tz->polling_delay = polling_delay; + dev_set_name(&tz->device, "thermal_zone%d", tz->id); result = device_register(&tz->device); if (result) { @@ -798,8 +1108,18 @@ struct thermal_zone_device *thermal_zone_device_register(char *type, TRIP_POINT_ATTR_ADD(&tz->device, count, result); if (result) goto unregister; + tz->ops->get_trip_type(tz, count, &trip_type); + if (trip_type == THERMAL_TRIP_PASSIVE) + passive = 1; } + if (!passive) + result = device_create_file(&tz->device, + &dev_attr_passive); + + if (result) + goto unregister; + result = thermal_add_hwmon_sysfs(tz); if (result) goto unregister; @@ -814,6 +1134,10 @@ struct thermal_zone_device *thermal_zone_device_register(char *type, } mutex_unlock(&thermal_list_lock); + INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check); + + thermal_zone_device_update(tz); + if (!result) return tz; @@ -853,6 +1177,8 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz) tz->ops->unbind(tz, cdev); mutex_unlock(&thermal_list_lock); + thermal_zone_device_set_polling(tz, 0); + if (tz->type[0]) device_remove_file(&tz->device, &dev_attr_type); device_remove_file(&tz->device, &dev_attr_temp); diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 917707e6151d..1de8b9eb841b 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -27,27 +27,46 @@ #include <linux/idr.h> #include <linux/device.h> +#include <linux/workqueue.h> struct thermal_zone_device; struct thermal_cooling_device; +enum thermal_device_mode { + THERMAL_DEVICE_DISABLED = 0, + THERMAL_DEVICE_ENABLED, +}; + +enum thermal_trip_type { + THERMAL_TRIP_ACTIVE = 0, + THERMAL_TRIP_PASSIVE, + THERMAL_TRIP_HOT, + THERMAL_TRIP_CRITICAL, +}; + struct thermal_zone_device_ops { int (*bind) (struct thermal_zone_device *, struct thermal_cooling_device *); int (*unbind) (struct thermal_zone_device *, struct thermal_cooling_device *); - int (*get_temp) (struct thermal_zone_device *, char *); - int (*get_mode) (struct thermal_zone_device *, char *); - int (*set_mode) (struct thermal_zone_device *, const char *); - int (*get_trip_type) (struct thermal_zone_device *, int, char *); - int (*get_trip_temp) (struct thermal_zone_device *, int, char *); + int (*get_temp) (struct thermal_zone_device *, unsigned long *); + int (*get_mode) (struct thermal_zone_device *, + enum thermal_device_mode *); + int (*set_mode) (struct thermal_zone_device *, + enum thermal_device_mode); + int (*get_trip_type) (struct thermal_zone_device *, int, + enum thermal_trip_type *); + int (*get_trip_temp) (struct thermal_zone_device *, int, + unsigned long *); int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *); + int (*notify) (struct thermal_zone_device *, int, + enum thermal_trip_type); }; struct thermal_cooling_device_ops { - int (*get_max_state) (struct thermal_cooling_device *, char *); - int (*get_cur_state) (struct thermal_cooling_device *, char *); - int (*set_cur_state) (struct thermal_cooling_device *, unsigned int); + int (*get_max_state) (struct thermal_cooling_device *, unsigned long *); + int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *); + int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); }; #define THERMAL_TRIPS_NONE -1 @@ -88,11 +107,19 @@ struct thermal_zone_device { struct device device; void *devdata; int trips; + int tc1; + int tc2; + int passive_delay; + int polling_delay; + int last_temperature; + bool passive; + unsigned int forced_passive; struct thermal_zone_device_ops *ops; struct list_head cooling_devices; struct idr idr; struct mutex lock; /* protect cooling devices list */ struct list_head node; + struct delayed_work poll_queue; #if defined(CONFIG_THERMAL_HWMON) struct list_head hwmon_node; struct thermal_hwmon_device *hwmon; @@ -104,13 +131,16 @@ struct thermal_zone_device { struct thermal_zone_device *thermal_zone_device_register(char *, int, void *, struct thermal_zone_device_ops - *); + *, int tc1, int tc2, + int passive_freq, + int polling_freq); void thermal_zone_device_unregister(struct thermal_zone_device *); int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, struct thermal_cooling_device *); int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, struct thermal_cooling_device *); +void thermal_zone_device_update(struct thermal_zone_device *); struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, struct thermal_cooling_device_ops |