kernel: backport Broadcom thermal drivers

[openwrt/staging/lynxis/omap.git] / target / linux / generic / patches-4.4 / 086-0002-thermal-core-export-apis-to-get-slope-and-offset.patch

diff --git a/target/linux/generic/patches-4.4/086-0002-thermal-core-export-apis-to-get-slope-and-offset.patch b/target/linux/generic/patches-4.4/086-0002-thermal-core-export-apis-to-get-slope-and-offset.patch
new file mode 100644 (file)
index 0000000..3fbe5f5
--- /dev/null
+++ b/target/linux/generic/patches-4.4/086-0002-thermal-core-export-apis-to-get-slope-and-offset.patch
@@ -0,0 +1,101 @@
+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 *