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| author | Eduardo Valentin <eduardo.valentin@ti.com> | 2013-07-03 15:35:39 -0400 |
|---|---|---|
| committer | Eduardo Valentin <eduardo.valentin@ti.com> | 2013-12-04 09:31:34 -0400 |
| commit | 4e5e4705bf69ea450f58fc709ac5888f321a9299 (patch) | |
| tree | 523e7c5a3f5459acdd5b81d81b0deeb68de79dc0 /drivers/thermal/thermal_core.h | |
| parent | 81bd4e1cebed5efb85bd94a15342ee4d6965a416 (diff) | |
| download | linux-4e5e4705bf69ea450f58fc709ac5888f321a9299.tar.bz2 | |
thermal: introduce device tree parser
This patch introduces a device tree bindings for
describing the hardware thermal behavior and limits.
Also a parser to read and interpret the data and feed
it in the thermal framework is presented.
This patch introduces a thermal data parser for device
tree. The parsed data is used to build thermal zones
and thermal binding parameters. The output data
can then be used to deploy thermal policies.
This patch adds also documentation regarding this
API and how to define tree nodes to use
this infrastructure.
Note that, in order to be able to have control
on the sensor registration on the DT thermal zone,
it was required to allow changing the thermal zone
.get_temp callback. For this reason, this patch
also removes the 'const' modifier from the .ops
field of thermal zone devices.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Diffstat (limited to 'drivers/thermal/thermal_core.h')
| -rw-r--r-- | drivers/thermal/thermal_core.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index 7cf2f6626251..3db339fb636f 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -77,4 +77,13 @@ static inline int thermal_gov_user_space_register(void) { return 0; } static inline void thermal_gov_user_space_unregister(void) {} #endif /* CONFIG_THERMAL_GOV_USER_SPACE */ +/* device tree support */ +#ifdef CONFIG_THERMAL_OF +int of_parse_thermal_zones(void); +void of_thermal_destroy_zones(void); +#else +static inline int of_parse_thermal_zones(void) { return 0; } +static inline void of_thermal_destroy_zones(void) { } +#endif + #endif /* __THERMAL_CORE_H__ */ |