Merge branches 'release' and 'thermal' into release

4 files changed, 162 insertions, 42 deletions

diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index ba9c2da5a8c2..d9f28be75403 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -143,10 +143,10 @@ type				Strings which represent the thermal zone type.
                                 This is given by thermal zone driver as part of registration.
                                 Eg: "ACPI thermal zone" indicates it's a ACPI thermal device
                                 RO
-                                Optional
+                                Required
 
 temp                            Current temperature as reported by thermal zone (sensor)
-                                Unit: degree Celsius
+                                Unit: millidegree Celsius
                                 RO
                                 Required
 
@@ -163,7 +163,7 @@ mode				One of the predefined values in [kernel, user]
                                           charge of the thermal management.
 
 trip_point_[0-*]_temp           The temperature above which trip point will be fired
-                                Unit: degree Celsius
+                                Unit: millidegree Celsius
                                 RO
                                 Optional
 
@@ -193,7 +193,7 @@ type				String which represents the type of device
                                 eg. For memory controller device on intel_menlow platform:
                                 this should be "Memory controller"
                                 RO
-                                Optional
+                                Required
 
 max_state                       The maximum permissible cooling state of this cooling device.
                                 RO
@@ -219,16 +219,16 @@ the sys I/F structure will be built like this:
 
 |thermal_zone1:
         |-----type:                     ACPI thermal zone
-        |-----temp:                     37
+        |-----temp:                     37000
         |-----mode:                     kernel
-        |-----trip_point_0_temp:        100
+        |-----trip_point_0_temp:        100000
         |-----trip_point_0_type:        critical
-        |-----trip_point_1_temp:        80
+        |-----trip_point_1_temp:        80000
         |-----trip_point_1_type:        passive
-        |-----trip_point_2_temp:        70
-        |-----trip_point_2_type:        active[0]
-        |-----trip_point_3_temp:        60
-        |-----trip_point_3_type:        active[1]
+        |-----trip_point_2_temp:        70000
+        |-----trip_point_2_type:        active0
+        |-----trip_point_3_temp:        60000
+        |-----trip_point_3_type:        active1
         |-----cdev0:                    --->/sys/class/thermal/cooling_device0
         |-----cdev0_trip_point:         1       /* cdev0 can be used for passive */
         |-----cdev1:                    --->/sys/class/thermal/cooling_device3
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 8d4b79b4f933..c4e00ac8ea85 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -879,6 +879,8 @@ static void acpi_thermal_check(void *data)
 }
 
 /* sys I/F for generic thermal sysfs support */
+#define KELVIN_TO_MILLICELSIUS(t) (t * 100 - 273200)
+
 static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
 {
         struct acpi_thermal *tz = thermal->devdata;
@@ -886,7 +888,7 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
         if (!tz)
                 return -EINVAL;
 
-        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(tz->temperature));
+        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(tz->temperature));
 }
 
 static const char enabled[] = "kernel";
@@ -980,21 +982,21 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
 
         if (tz->trips.critical.flags.valid) {
                 if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                 tz->trips.critical.temperature));
                 trip--;
         }
 
         if (tz->trips.hot.flags.valid) {
                 if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                         tz->trips.hot.temperature));
                 trip--;
         }
 
         if (tz->trips.passive.flags.valid) {
                 if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                         tz->trips.passive.temperature));
                 trip--;
         }
@@ -1002,7 +1004,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
         for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
                 tz->trips.active[i].flags.valid; i++) {
                 if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                         tz->trips.active[i].temperature));
                 trip--;
         }
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 69f19f224875..3ab313ed441c 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -4,6 +4,7 @@
 
 menuconfig THERMAL
         bool "Generic Thermal sysfs driver"
+        select HWMON
         default y
         help
           Generic Thermal Sysfs driver offers a generic mechanism for
diff --git a/drivers/thermal/thermal.c b/drivers/thermal/thermal.c
index 8b86e53ccf7a..41bd4c805ace 100644
--- a/drivers/thermal/thermal.c
+++ b/drivers/thermal/thermal.c
@@ -30,8 +30,10 @@
 #include <linux/idr.h>
 #include <linux/thermal.h>
 #include <linux/spinlock.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
 
-MODULE_AUTHOR("Zhang Rui")
+MODULE_AUTHOR("Zhang Rui");
 MODULE_DESCRIPTION("Generic thermal management sysfs support");
 MODULE_LICENSE("GPL");
 
@@ -56,6 +58,9 @@ static LIST_HEAD(thermal_tz_list);
 static LIST_HEAD(thermal_cdev_list);
 static DEFINE_MUTEX(thermal_list_lock);
 
+static struct device *thermal_hwmon;
+#define MAX_THERMAL_ZONES       10
+
 static int get_idr(struct idr *idr, struct mutex *lock, int *id)
 {
         int err;
@@ -87,7 +92,67 @@ static void release_idr(struct idr *idr, struct mutex *lock, int id)
                 mutex_unlock(lock);
 }