forked from luck/tmp_suning_uos_patched
ACPI: thermal: syntax, spelling, kernel-doc
Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown
parent
9f2eef25e0
commit
543a956140
|
|
@ -14,7 +14,7 @@ The generic thermal sysfs provides a set of interfaces for thermal zone devices
|
|||
and thermal cooling devices (fan, processor...) to register with the thermal management
|
||||
solution and to be a part of it.
|
||||
|
||||
This how-to focusses on enabling new thermal zone and cooling devices to participate
|
||||
This how-to focuses on enabling new thermal zone and cooling devices to participate
|
||||
in thermal management.
|
||||
This solution is platform independent and any type of thermal zone devices and
|
||||
cooling devices should be able to make use of the infrastructure.
|
||||
|
|
@ -41,9 +41,9 @@ and throttle appropriate devices.
|
|||
name: the thermal zone name.
|
||||
trips: the total number of trip points this thermal zone supports.
|
||||
devdata: device private data
|
||||
ops: thermal zone device callbacks.
|
||||
ops: thermal zone device call-backs.
|
||||
.bind: bind the thermal zone device with a thermal cooling device.
|
||||
.unbind: unbing the thermal zone device with a thermal cooling device.
|
||||
.unbind: unbind the thermal zone device with a thermal cooling device.
|
||||
.get_temp: get the current temperature of the thermal zone.
|
||||
.get_mode: get the current mode (user/kernel) of the thermal zone.
|
||||
"kernel" means thermal management is done in kernel.
|
||||
|
|
@ -69,7 +69,7 @@ and throttle appropriate devices.
|
|||
It tries to bind itself to all the thermal zone devices register at the same time.
|
||||
name: the cooling device name.
|
||||
devdata: device private data.
|
||||
ops: thermal cooling devices callbacks.
|
||||
ops: thermal cooling devices call-backs.
|
||||
.get_max_state: get the Maximum throttle state of the cooling device.
|
||||
.get_cur_state: get the Current throttle state of the cooling device.
|
||||
.set_cur_state: set the Current throttle state of the cooling device.
|
||||
|
|
@ -109,7 +109,6 @@ RO read only value
|
|||
RW read/write value
|
||||
|
||||
All thermal sysfs attributes will be represented under /sys/class/thermal
|
||||
/sys/class/thermal/
|
||||
|
||||
Thermal zone device sys I/F, created once it's registered:
|
||||
|thermal_zone[0-*]:
|
||||
|
|
@ -129,7 +128,7 @@ Thermal cooling device sys I/F, created once it's registered:
|
|||
These two dynamic attributes are created/removed in pairs.
|
||||
They represent the relationship between a thermal zone and its associated cooling device.
|
||||
They are created/removed for each
|
||||
thermal_zone_bind_cooling_device/thermal_zone_unbind_cooling_device successful exection.
|
||||
thermal_zone_bind_cooling_device/thermal_zone_unbind_cooling_device successful execution.
|
||||
|
||||
|thermal_zone[0-*]
|
||||
|-----cdev[0-*]: The [0-*]th cooling device in the current thermal zone
|
||||
|
|
@ -147,11 +146,11 @@ type Strings which represent the thermal zone type.
|
|||
Optional
|
||||
|
||||
temp Current temperature as reported by thermal zone (sensor)
|
||||
Unit: degree celsius
|
||||
Unit: degree Celsius
|
||||
RO
|
||||
Required
|
||||
|
||||
mode One of the predifned values in [kernel, user]
|
||||
mode One of the predefined values in [kernel, user]
|
||||
This file gives information about the algorithm
|
||||
that is currently managing the thermal zone.
|
||||
It can be either default kernel based algorithm
|
||||
|
|
@ -164,12 +163,12 @@ mode One of the predifned values in [kernel, user]
|
|||
charge of the thermal management.
|
||||
|
||||
trip_point_[0-*]_temp The temperature above which trip point will be fired
|
||||
Unit: degree celsius
|
||||
Unit: degree Celsius
|
||||
RO
|
||||
Optional
|
||||
|
||||
trip_point_[0-*]_type Strings which indicate the type of the trip point
|
||||
Eg. it can be one of critical, hot, passive,
|
||||
E.g. it can be one of critical, hot, passive,
|
||||
active[0-*] for ACPI thermal zone.
|
||||
RO
|
||||
Optional
|
||||
|
|
@ -179,7 +178,7 @@ cdev[0-*] Sysfs link to the thermal cooling device node where the sys I/F
|
|||
RO
|
||||
Optional
|
||||
|
||||
cdev[0-*]_trip_point The trip point with which cdev[0-*] is assocated in this thermal zone
|
||||
cdev[0-*]_trip_point The trip point with which cdev[0-*] is associated in this thermal zone
|
||||
-1 means the cooling device is not associated with any trip point.
|
||||
RO
|
||||
Optional
|
||||
|
|
@ -211,7 +210,7 @@ cur_state The current cooling state of this cooling device.
|
|||
|
||||
ACPI thermal zone may support multiple trip points like critical/hot/passive/active.
|
||||
If an ACPI thermal zone supports critical, passive, active[0] and active[1] at the same time,
|
||||
it may register itself as a thermale_zone_device (thermal_zone1) with 4 trip points in all.
|
||||
it may register itself as a thermal_zone_device (thermal_zone1) with 4 trip points in all.
|
||||
It has one processor and one fan, which are both registered as thermal_cooling_device.
|
||||
If the processor is listed in _PSL method, and the fan is listed in _AL0 method,
|
||||
the sys I/F structure will be built like this:
|
||||
|
|
|
|||
|
|
@ -9,7 +9,7 @@ menuconfig THERMAL
|
|||
Generic Thermal Sysfs driver offers a generic mechanism for
|
||||
thermal management. Usually it's made up of one or more thermal
|
||||
zone and cooling device.
|
||||
each thermal zone contains its own temperature, trip points,
|
||||
Each thermal zone contains its own temperature, trip points,
|
||||
cooling devices.
|
||||
All platforms with ACPI thermal support can use this driver.
|
||||
If you want this support, you should say Y here
|
||||
If you want this support, you should say Y here.
|
||||
|
|
|
|||
|
|
@ -267,7 +267,7 @@ thermal_cooling_device_cur_state_store(struct device *dev,
|
|||
}
|
||||
|
||||
static struct device_attribute dev_attr_cdev_type =
|
||||
__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
|
||||
__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
|
||||
static DEVICE_ATTR(max_state, 0444,
|
||||
thermal_cooling_device_max_state_show, NULL);
|
||||
static DEVICE_ATTR(cur_state, 0644,
|
||||
|
|
@ -276,7 +276,7 @@ static DEVICE_ATTR(cur_state, 0644,
|
|||
|
||||
static ssize_t
|
||||
thermal_cooling_device_trip_point_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct thermal_cooling_device_instance *instance;
|
||||
|
||||
|
|
@ -293,11 +293,12 @@ thermal_cooling_device_trip_point_show(struct device *dev,
|
|||
|
||||
/**
|
||||
* thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
|
||||
* this function is usually called in the thermal zone device .bind callback.
|
||||
* @tz: thermal zone device
|
||||
* @trip: indicates which trip point the cooling devices is
|
||||
* associated with in this thermal zone.
|
||||
* @cdev: thermal cooling device
|
||||
*
|
||||
* This function is usually called in the thermal zone device .bind callback.
|
||||
*/
|
||||
int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
|
||||
int trip,
|
||||
|
|
@ -307,8 +308,7 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
|
|||
struct thermal_cooling_device_instance *pos;
|
||||
int result;
|
||||
|
||||
if (trip >= tz->trips ||
|
||||
(trip < 0 && trip != THERMAL_TRIPS_NONE))
|
||||
if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
|
||||
return -EINVAL;
|
||||
|
||||
if (!tz || !cdev)
|
||||
|
|
@ -361,15 +361,17 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
|
|||
kfree(dev);
|
||||
return result;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
|
||||
|
||||
/**
|
||||
* thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
|
||||
* this function is usually called in the thermal zone device .unbind callback.
|
||||
* @tz: thermal zone device
|
||||
* @trip: indicates which trip point the cooling devices is
|
||||
* associated with in this thermal zone.
|
||||
* @cdev: thermal cooling device
|
||||
*
|
||||
* This function is usually called in the thermal zone device .unbind callback.
|
||||
*/
|
||||
int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
|
||||
int trip,
|
||||
|
|
@ -379,8 +381,7 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
|
|||
|
||||
mutex_lock(&tz->lock);
|
||||
list_for_each_entry_safe(pos, next, &tz->cooling_devices, node) {
|
||||
if (pos->tz == tz && pos->trip == trip
|
||||
&& pos->cdev == cdev) {
|
||||
if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
|
||||
list_del(&pos->node);
|
||||
mutex_unlock(&tz->lock);
|
||||
goto unbind;
|
||||
|
|
@ -397,6 +398,7 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
|
|||
kfree(pos);
|
||||
return 0;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
|
||||
|
||||
static void thermal_release(struct device *dev)
|
||||
|
|
@ -425,7 +427,10 @@ static struct class thermal_class = {
|
|||
* @ops: standard thermal cooling devices callbacks.
|
||||
*/
|
||||
struct thermal_cooling_device *thermal_cooling_device_register(char *type,
|
||||
void *devdata, struct thermal_cooling_device_ops *ops)
|
||||
void *devdata,
|
||||
struct
|
||||
thermal_cooling_device_ops
|
||||
*ops)
|
||||
{
|
||||
struct thermal_cooling_device *cdev;
|
||||
struct thermal_zone_device *pos;
|
||||
|
|
@ -435,7 +440,7 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
|
|||
return NULL;
|
||||
|
||||
if (!ops || !ops->get_max_state || !ops->get_cur_state ||
|
||||
!ops->set_cur_state)
|
||||
!ops->set_cur_state)
|
||||
return NULL;
|
||||
|
||||
cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
|
||||
|
|
@ -462,8 +467,7 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
|
|||
|
||||
/* sys I/F */
|
||||
if (type) {
|
||||
result = device_create_file(&cdev->device,
|
||||
&dev_attr_cdev_type);
|
||||
result = device_create_file(&cdev->device, &dev_attr_cdev_type);
|
||||
if (result)
|
||||
goto unregister;
|
||||
}
|
||||
|
|
@ -496,11 +500,11 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
|
|||
device_unregister(&cdev->device);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(thermal_cooling_device_register);
|
||||
|
||||
/**
|
||||
* thermal_cooling_device_unregister - removes the registered thermal cooling device
|
||||
*
|
||||
* @cdev: the thermal cooling device to remove.
|
||||
*
|
||||
* thermal_cooling_device_unregister() must be called when the device is no
|
||||
|
|
@ -533,8 +537,7 @@ void thermal_cooling_device_unregister(struct
|
|||
}
|
||||
mutex_unlock(&thermal_list_lock);
|
||||
if (cdev->type[0])
|
||||
device_remove_file(&cdev->device,
|
||||
&dev_attr_cdev_type);
|
||||
device_remove_file(&cdev->device, &dev_attr_cdev_type);
|
||||
device_remove_file(&cdev->device, &dev_attr_max_state);
|
||||
device_remove_file(&cdev->device, &dev_attr_cur_state);
|
||||
|
||||
|
|
@ -542,6 +545,7 @@ void thermal_cooling_device_unregister(struct
|
|||
device_unregister(&cdev->device);
|
||||
return;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(thermal_cooling_device_unregister);
|
||||
|
||||
/**
|
||||
|
|
@ -555,8 +559,10 @@ EXPORT_SYMBOL(thermal_cooling_device_unregister);
|
|||
* longer needed.
|
||||
*/
|
||||
struct thermal_zone_device *thermal_zone_device_register(char *type,
|
||||
int trips, void *devdata,
|
||||
struct thermal_zone_device_ops *ops)
|
||||
int trips,
|
||||
void *devdata, struct
|
||||
thermal_zone_device_ops
|
||||
*ops)
|
||||
{
|
||||
struct thermal_zone_device *tz;
|
||||
struct thermal_cooling_device *pos;
|
||||
|
|
@ -625,9 +631,9 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
|
|||
list_add_tail(&tz->node, &thermal_tz_list);
|
||||
if (ops->bind)
|
||||
list_for_each_entry(pos, &thermal_cdev_list, node) {
|
||||
result = ops->bind(tz, pos);
|
||||
if (result)
|
||||
break;
|
||||
result = ops->bind(tz, pos);
|
||||
if (result)
|
||||
break;
|
||||
}
|
||||
mutex_unlock(&thermal_list_lock);
|
||||
|
||||
|
|
@ -639,11 +645,11 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
|
|||
device_unregister(&tz->device);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(thermal_zone_device_register);
|
||||
|
||||
/**
|
||||
* thermal_device_unregister - removes the registered thermal zone device
|
||||
*
|
||||
* @tz: the thermal zone device to remove
|
||||
*/
|
||||
void thermal_zone_device_unregister(struct thermal_zone_device *tz)
|
||||
|
|
@ -685,6 +691,7 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz)
|
|||
device_unregister(&tz->device);
|
||||
return;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(thermal_zone_device_unregister);
|
||||
|
||||
static int __init thermal_init(void)
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user