25 files changed, 2205 insertions, 736 deletions

diff --git a/Documentation/thermal/cpu-cooling-api.txt b/Documentation/thermal/cpu-cooling-api.txt
new file mode 100644
index 000000000000..fca24c931ec8
--- /dev/null
+++ b/Documentation/thermal/cpu-cooling-api.txt
@@ -0,0 +1,32 @@
+CPU cooling APIs How To
+===================================
+
+Written by Amit Daniel Kachhap <amit.kachhap@linaro.org>
+
+Updated: 12 May 2012
+
+Copyright (c)  2012 Samsung Electronics Co., Ltd(http://www.samsung.com)
+
+0. Introduction
+
+The generic cpu cooling(freq clipping) provides registration/unregistration APIs
+to the caller. The binding of the cooling devices to the trip point is left for
+the user. The registration APIs returns the cooling device pointer.
+
+1. cpu cooling APIs
+
+1.1 cpufreq registration/unregistration APIs
+1.1.1 struct thermal_cooling_device *cpufreq_cooling_register(
+        struct cpumask *clip_cpus)
+
+    This interface function registers the cpufreq cooling device with the name
+    "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
+    cooling devices.
+
+   clip_cpus: cpumask of cpus where the frequency constraints will happen.
+
+1.1.2 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
+
+    This interface function unregisters the "thermal-cpufreq-%x" cooling device.
+
+    cdev: Cooling device pointer which has to be unregistered.
diff --git a/Documentation/hwmon/exynos4_tmu b/Documentation/thermal/exynos_thermal
index c3c6b41db607..2b46f67b1ccb 100644
--- a/Documentation/hwmon/exynos4_tmu
+++ b/Documentation/thermal/exynos_thermal
@@ -46,36 +46,7 @@ The threshold levels are defined as follows:
   The threshold and each trigger_level are set
   through the corresponding registers.
 
-When an interrupt occurs, this driver notify user space of
-one of four threshold levels for the interrupt
-through kobject_uevent_env and sysfs_notify functions.
+When an interrupt occurs, this driver notify kernel thermal framework
+with the function exynos4_report_trigger.
 Although an interrupt condition for level_0 can be set,
-it is not notified to user space through sysfs_notify function.
-
-Sysfs Interface
----------------
-name            name of the temperature sensor
-                RO
-
-temp1_input     temperature
-                RO
-
-temp1_max       temperature for level_1 interrupt
-                RO
-
-temp1_crit      temperature for level_2 interrupt
-                RO
-
-temp1_emergency temperature for level_3 interrupt
-                RO
-
-temp1_max_alarm alarm for level_1 interrupt
-                RO
-
-temp1_crit_alarm
-                alarm for level_2 interrupt
-                RO
-
-temp1_emergency_alarm
-                alarm for level_3 interrupt
-                RO
+it can be used to synchronize the cooling action.
diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index c087dbcf3535..ca1a1a34970e 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -84,7 +84,8 @@ temperature) and throttle appropriate devices.
 
 1.3 interface for binding a thermal zone device with a thermal cooling device
 1.3.1 int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
-                int trip, struct thermal_cooling_device *cdev);
+        int trip, struct thermal_cooling_device *cdev,
+        unsigned long upper, unsigned long lower);
 
     This interface function bind a thermal cooling device to the certain trip
     point of a thermal zone device.
@@ -93,6 +94,12 @@ temperature) and throttle appropriate devices.
     cdev: thermal cooling device
     trip: indicates which trip point the cooling devices is associated with
           in this thermal zone.
+    upper:the Maximum cooling state for this trip point.
+          THERMAL_NO_LIMIT means no upper limit,
+          and the cooling device can be in max_state.
+    lower:the Minimum cooling state can be used for this trip point.
+          THERMAL_NO_LIMIT means no lower limit,
+          and the cooling device can be in cooling state 0.
 
 1.3.2 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
                 int trip, struct thermal_cooling_device *cdev);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 7edaccce6640..a51df9681319 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -71,9 +71,6 @@ enum ec_command {
 #define ACPI_EC_UDELAY_GLK      1000    /* Wait 1ms max. to get global lock */
 #define ACPI_EC_MSI_UDELAY      550     /* Wait 550us for MSI EC */
 
-#define ACPI_EC_STORM_THRESHOLD 8       /* number of false interrupts
-                                           per one transaction */
-
 enum {
         EC_FLAGS_QUERY_PENDING,         /* Query is pending */
         EC_FLAGS_GPE_STORM,             /* GPE storm detected */
@@ -87,6 +84,15 @@ static unsigned int ec_delay __read_mostly = ACPI_EC_DELAY;
 module_param(ec_delay, uint, 0644);
 MODULE_PARM_DESC(ec_delay, "Timeout(ms) waited until an EC command completes");
 
+/*
+ * If the number of false interrupts per one transaction exceeds
+ * this threshold, will think there is a GPE storm happened and
+ * will disable the GPE for normal transaction.
+ */
+static unsigned int ec_storm_threshold  __read_mostly = 8;
+module_param(ec_storm_threshold, uint, 0644);
+MODULE_PARM_DESC(ec_storm_threshold, "Maxim false GPE numbers not considered as GPE storm");
+
 /* If we find an EC via the ECDT, we need to keep a ptr to its context */
 /* External interfaces use first EC only, so remember */
 typedef int (*acpi_ec_query_func) (void *data);
@@ -319,7 +325,7 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
                 msleep(1);
                 /* It is safe to enable the GPE outside of the transaction. */
                 acpi_enable_gpe(NULL, ec->gpe);
-        } else if (t->irq_count > ACPI_EC_STORM_THRESHOLD) {
+        } else if (t->irq_count > ec_storm_threshold) {
                 pr_info(PREFIX "GPE storm detected, "
                         "transactions will use polling mode\n");
                 set_bit(EC_FLAGS_GPE_STORM, &ec->flags);
@@ -924,6 +930,17 @@ static int ec_flag_msi(const struct dmi_system_id *id)
         return 0;
 }