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- From 4a7069a32c99a81950de035535b0a064dcceaeba Mon Sep 17 00:00:00 2001
- From: Rajendra Nayak <rnayak@codeaurora.org>
- Date: Thu, 5 May 2016 14:21:42 +0530
- Subject: [PATCH] thermal: core: export apis to get slope and offset
- Add apis for platform thermal drivers to query for slope and offset
- attributes, which might be needed for temperature calculations.
- Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
- Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
- Signed-off-by: Zhang Rui <rui.zhang@intel.com>
- ---
- Documentation/thermal/sysfs-api.txt | 12 ++++++++++++
- drivers/thermal/thermal_core.c | 30 ++++++++++++++++++++++++++++++
- include/linux/thermal.h | 8 ++++++++
- 3 files changed, 50 insertions(+)
- --- a/Documentation/thermal/sysfs-api.txt
- +++ b/Documentation/thermal/sysfs-api.txt
- @@ -72,6 +72,18 @@ temperature) and throttle appropriate de
- It deletes the corresponding entry form /sys/class/thermal folder and
- unbind all the thermal cooling devices it uses.
-
- +1.1.7 int thermal_zone_get_slope(struct thermal_zone_device *tz)
- +
- + This interface is used to read the slope attribute value
- + for the thermal zone device, which might be useful for platform
- + drivers for temperature calculations.
- +
- +1.1.8 int thermal_zone_get_offset(struct thermal_zone_device *tz)
- +
- + This interface is used to read the offset attribute value
- + for the thermal zone device, which might be useful for platform
- + drivers for temperature calculations.
- +
- 1.2 thermal cooling device interface
- 1.2.1 struct thermal_cooling_device *thermal_cooling_device_register(char *name,
- void *devdata, struct thermal_cooling_device_ops *)
- --- a/drivers/thermal/thermal_core.c
- +++ b/drivers/thermal/thermal_core.c
- @@ -2061,6 +2061,36 @@ exit:
- }
- EXPORT_SYMBOL_GPL(thermal_zone_get_zone_by_name);
-
- +/**
- + * thermal_zone_get_slope - return the slope attribute of the thermal zone
- + * @tz: thermal zone device with the slope attribute
- + *
- + * Return: If the thermal zone device has a slope attribute, return it, else
- + * return 1.
- + */
- +int thermal_zone_get_slope(struct thermal_zone_device *tz)
- +{
- + if (tz && tz->tzp)
- + return tz->tzp->slope;
- + return 1;
- +}
- +EXPORT_SYMBOL_GPL(thermal_zone_get_slope);
- +
- +/**
- + * thermal_zone_get_offset - return the offset attribute of the thermal zone
- + * @tz: thermal zone device with the offset attribute
- + *
- + * Return: If the thermal zone device has a offset attribute, return it, else
- + * return 0.
- + */
- +int thermal_zone_get_offset(struct thermal_zone_device *tz)
- +{
- + if (tz && tz->tzp)
- + return tz->tzp->offset;
- + return 0;
- +}
- +EXPORT_SYMBOL_GPL(thermal_zone_get_offset);
- +
- #ifdef CONFIG_NET
- static const struct genl_multicast_group thermal_event_mcgrps[] = {
- { .name = THERMAL_GENL_MCAST_GROUP_NAME, },
- --- a/include/linux/thermal.h
- +++ b/include/linux/thermal.h
- @@ -432,6 +432,8 @@ thermal_of_cooling_device_register(struc
- void thermal_cooling_device_unregister(struct thermal_cooling_device *);
- struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name);
- int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp);
- +int thermal_zone_get_slope(struct thermal_zone_device *tz);
- +int thermal_zone_get_offset(struct thermal_zone_device *tz);
-
- int get_tz_trend(struct thermal_zone_device *, int);
- struct thermal_instance *get_thermal_instance(struct thermal_zone_device *,
- @@ -489,6 +491,12 @@ static inline struct thermal_zone_device
- static inline int thermal_zone_get_temp(
- struct thermal_zone_device *tz, int *temp)
- { return -ENODEV; }
- +static inline int thermal_zone_get_slope(
- + struct thermal_zone_device *tz)
- +{ return -ENODEV; }
- +static inline int thermal_zone_get_offset(
- + struct thermal_zone_device *tz)
- +{ return -ENODEV; }
- static inline int get_tz_trend(struct thermal_zone_device *tz, int trip)
- { return -ENODEV; }
- static inline struct thermal_instance *
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