* complex code may be needed if experiments show that it's not
* accurate enough.
*
* complex code may be needed if experiments show that it's not
* accurate enough.
*
- * Return: 0 on success, -E* if getting the static power failed.
+ * Return: 0 on success, this function doesn't fail.
*/
static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
u32 *power)
*/
static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
u32 *power)
* milliwatts assuming 100% load. Store the calculated power in
* @power.
*
* milliwatts assuming 100% load. Store the calculated power in
* @power.
*
- * Return: 0 on success, -EINVAL if the cooling device state could not
- * be converted into a frequency or other -E* if there was an error
- * when calculating the static power.
+ * Return: 0 on success, -EINVAL if the cooling device state is bigger
+ * than maximum allowed.
*/
static int cpufreq_state2power(struct thermal_cooling_device *cdev,
unsigned long state, u32 *power)
*/
static int cpufreq_state2power(struct thermal_cooling_device *cdev,
unsigned long state, u32 *power)
* Calculate a cooling device state for the cpus described by @cdev
* that would allow them to consume at most @power mW and store it in
* @state. Note that this calculation depends on external factors
* Calculate a cooling device state for the cpus described by @cdev
* that would allow them to consume at most @power mW and store it in
* @state. Note that this calculation depends on external factors
- * such as the cpu load or the current static power. Calling this
- * function with the same power as input can yield different cooling
- * device states depending on those external factors.
- *
- * Return: 0 on success, -ENODEV if no cpus are online or -EINVAL if
- * the calculated frequency could not be converted to a valid state.
- * The latter should not happen unless the frequencies available to
- * cpufreq have changed since the initialization of the cpu cooling
- * device.
+ * such as the CPUs load. Calling this function with the same power
+ * as input can yield different cooling device states depending on those
+ * external factors.
+ *
+ * Return: 0 on success, this function doesn't fail.
*/
static int cpufreq_power2state(struct thermal_cooling_device *cdev,
u32 power, unsigned long *state)
*/
static int cpufreq_power2state(struct thermal_cooling_device *cdev,
u32 power, unsigned long *state)
* Callback for the thermal cooling device to return the cpufreq
* max cooling state.
*
* Callback for the thermal cooling device to return the cpufreq
* max cooling state.
*
- * Return: 0 on success, an error code otherwise.
+ * Return: 0 on success, this function doesn't fail.
*/
static int cpufreq_get_max_state(struct thermal_cooling_device *cdev,
unsigned long *state)
*/
static int cpufreq_get_max_state(struct thermal_cooling_device *cdev,
unsigned long *state)
* Callback for the thermal cooling device to return the cpufreq
* current cooling state.
*
* Callback for the thermal cooling device to return the cpufreq
* current cooling state.
*
- * Return: 0 on success, an error code otherwise.
+ * Return: 0 on success, this function doesn't fail.
*/
static int cpufreq_get_cur_state(struct thermal_cooling_device *cdev,
unsigned long *state)
*/
static int cpufreq_get_cur_state(struct thermal_cooling_device *cdev,
unsigned long *state)
* @em: Energy Model of the cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
* @em: Energy Model of the cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
- * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
+ * "cpufreq-%s". This API can support multiple instances of cpufreq
* cooling devices. It also gives the opportunity to link the cooling device
* with a device tree node, in order to bind it via the thermal DT code.
*
* cooling devices. It also gives the opportunity to link the cooling device
* with a device tree node, in order to bind it via the thermal DT code.
*
* @policy: cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
* @policy: cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
- * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
- * cooling devices.
+ * "cpufreq-%s". This API can support multiple instances of cpufreq cooling
+ * devices.
*
* Return: a valid struct thermal_cooling_device pointer on success,
* on failure, it returns a corresponding ERR_PTR().
*
* Return: a valid struct thermal_cooling_device pointer on success,
* on failure, it returns a corresponding ERR_PTR().
* @policy: cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
* @policy: cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
- * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
- * cooling devices. Using this API, the cpufreq cooling device will be
- * linked to the device tree node provided.
+ * "cpufreq-%s". This API can support multiple instances of cpufreq cooling
+ * devices. Using this API, the cpufreq cooling device will be linked to the
+ * device tree node provided.
*
* Using this function, the cooling device will implement the power
*
* Using this function, the cooling device will implement the power
- * extensions by using a simple cpu power model. The cpus must have
+ * extensions by using the Energy Model (if present). The cpus must have
* registered their OPPs using the OPP library.
*
* registered their OPPs using the OPP library.
*
- * It also takes into account, if property present in policy CPU node, the
- * static power consumed by the cpu.
- *
* Return: a valid struct thermal_cooling_device pointer on success,
* and NULL on failure.
*/
* Return: a valid struct thermal_cooling_device pointer on success,
* and NULL on failure.
*/
* cpufreq_cooling_unregister - function to remove cpufreq cooling device.
* @cdev: thermal cooling device pointer.
*
* cpufreq_cooling_unregister - function to remove cpufreq cooling device.
* @cdev: thermal cooling device pointer.
*
- * This interface function unregisters the "thermal-cpufreq-%x" cooling device.
+ * This interface function unregisters the "cpufreq-%x" cooling device.
*/
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
{
*/
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
{