Thermal: Make Thermal trip points writeable

Some of the thermal drivers using the Generic Thermal Framework
require (all/some) trip points to be writeable. This patch makes
the trip point temperatures writeable on a per-trip point basis,
and modifies the required function call in thermal.c. This patch
also updates the Documentation to reflect the new change.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 12 insertions, 3 deletions

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 796f1ff0388c..6eaf9146c847 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -58,6 +58,8 @@ struct thermal_zone_device_ops {
                 enum thermal_trip_type *);
         int (*get_trip_temp) (struct thermal_zone_device *, int,
                               unsigned long *);
+        int (*set_trip_temp) (struct thermal_zone_device *, int,
+                              unsigned long);
         int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *);
         int (*notify) (struct thermal_zone_device *, int,
                        enum thermal_trip_type);
@@ -85,10 +87,17 @@ struct thermal_cooling_device {
                                 ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
 #define CELSIUS_TO_KELVIN(t)    ((t)*10+2732)
 
+struct thermal_attr {
+        struct device_attribute attr;
+        char name[THERMAL_NAME_LENGTH];
+};
+
 struct thermal_zone_device {
         int id;
         char type[THERMAL_NAME_LENGTH];
         struct device device;
+        struct thermal_attr *trip_temp_attrs;
+        struct thermal_attr *trip_type_attrs;
         void *devdata;
         int trips;
         int tc1;
@@ -137,9 +146,9 @@ enum {
 };
 #define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1)
 
-struct thermal_zone_device *thermal_zone_device_register(char *, int, void *,
-                const struct thermal_zone_device_ops *, int tc1, int tc2,
-                int passive_freq, int polling_freq);
+struct thermal_zone_device *thermal_zone_device_register(char *, int, int,
+                void *, const struct thermal_zone_device_ops *, int tc1,
+                int tc2, int passive_freq, int polling_freq);
 void thermal_zone_device_unregister(struct thermal_zone_device *);
 
 int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,