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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

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Pull thermal updates from Zhang Rui:
 "Specifics:

   - adds full support for 2 types of Thermal Controllers produced by
     STMicroelectronics.  One is a more traditional memory mapped
     variant, the other is controlled solely by system configuration
     registers.  From Lee Jones.

   - add TMU (Thermal Management Unit) support for Exynos3250 Soc.
     From Chanwoo Choi.

   - add critical and passive trip point support for int3403 thermal
     driver.  From Srinivas Pandruvada.

   - a couple of small fixes/cleanups from Javi Merino, and Geert
     Uytterhoeven"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: document struct thermal_zone_device and thermal_governor
  thermal: cpu_cooling: fix typo highjack -> hijack
  thermal: rcar: Document SoC-specific bindings
  thermal: samsung: Add TMU support for Exynos3250 SoC
  thermal: exynos: fix ordering in exynos_tmu_remove()
  thermal: allow building dove_thermal with mvebu
  thermal: sti: Add support for ST's Memory Mapped based Thermal controller
  thermal: sti: Add support for ST's System Config Register based Thermal controller
  thermal: sti: Introduce ST Thermal core code
  thermal: sti: Supply Device Tree documentation
  Thermal: int3403: Add CRT and PSV trip
This commit is contained in:
Linus Torvalds 2014-08-11 07:04:17 -07:00
commit 5fd41f2a10
18 changed files with 1093 additions and 21 deletions
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46
include/linux/thermal.h
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@ -158,6 +158,42 @@ struct thermal_attr {
char name[THERMAL_NAME_LENGTH];
};
/**
* struct thermal_zone_device - structure for a thermal zone
* @id: unique id number for each thermal zone
* @type: the thermal zone device type
* @device: &struct device for this thermal zone
* @trip_temp_attrs: attributes for trip points for sysfs: trip temperature
* @trip_type_attrs: attributes for trip points for sysfs: trip type
* @trip_hyst_attrs: attributes for trip points for sysfs: trip hysteresis
* @devdata: private pointer for device private data
* @trips: number of trip points the thermal zone supports
* @passive_delay: number of milliseconds to wait between polls when
* performing passive cooling. Currenty only used by the
* step-wise governor
* @polling_delay: number of milliseconds to wait between polls when
* checking whether trip points have been crossed (0 for
* interrupt driven systems)
* @temperature: current temperature. This is only for core code,
* drivers should use thermal_zone_get_temp() to get the
* current temperature
* @last_temperature: previous temperature read
* @emul_temperature: emulated temperature when using CONFIG_THERMAL_EMULATION
* @passive: 1 if you've crossed a passive trip point, 0 otherwise.
* Currenty only used by the step-wise governor.
* @forced_passive: If > 0, temperature at which to switch on all ACPI
* processor cooling devices. Currently only used by the
* step-wise governor.
* @ops: operations this &thermal_zone_device supports
* @tzp: thermal zone parameters
* @governor: pointer to the governor for this thermal zone
* @thermal_instances: list of &struct thermal_instance of this thermal zone
* @idr: &struct idr to generate unique id for this zone's cooling
* devices
* @lock: lock to protect thermal_instances list
* @node: node in thermal_tz_list (in thermal_core.c)
* @poll_queue: delayed work for polling
*/
struct thermal_zone_device {
int id;
char type[THERMAL_NAME_LENGTH];
@ -179,12 +215,18 @@ struct thermal_zone_device {
struct thermal_governor *governor;
struct list_head thermal_instances;
struct idr idr;
struct mutex lock; /* protect thermal_instances list */
struct mutex lock;
struct list_head node;
struct delayed_work poll_queue;
};
/* Structure that holds thermal governor information */
/**
* struct thermal_governor - structure that holds thermal governor information
* @name: name of the governor
* @throttle: callback called for every trip point even if temperature is
* below the trip point temperature
* @governor_list: node in thermal_governor_list (in thermal_core.c)
*/
struct thermal_governor {
char name[THERMAL_NAME_LENGTH];
int (*throttle)(struct thermal_zone_device *tz, int trip);