hwmon: exynos4: move thermal sensor driver to driver/thermal directory

This movement is needed because the hwmon entries and corresponding sysfs
interface is a duplicate of utilities already provided by
driver/thermal/thermal_sys.c.  The goal is to place it in thermal folder
and add necessary functions to use the in-kernel thermal interfaces.

Signed-off-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: SangWook Ju <sw.ju@samsung.com>
Cc: Durgadoss <durgadoss.r@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Kyungmin Park <kmpark@infradead.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 files changed, 19 insertions, 156 deletions

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/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index b0a2e4c37e12..84e02b416a4a 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -324,16 +324,6 @@ config SENSORS_DA9052_ADC
           This driver can also be built as module. If so, the module
           will be called da9052-hwmon.
 
-config SENSORS_EXYNOS4_TMU
-        tristate "Temperature sensor on Samsung EXYNOS4"
-        depends on ARCH_EXYNOS4
-        help
-          If you say yes here you get support for TMU (Thermal Management
-          Unit) on SAMSUNG EXYNOS4 series of SoC.
-
-          This driver can also be built as a module. If so, the module
-          will be called exynos4-tmu.
-
 config SENSORS_I5K_AMB
         tristate "FB-DIMM AMB temperature sensor on Intel 5000 series chipsets"
         depends on PCI && EXPERIMENTAL
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 7aa98119c4ab..3eafe483f36a 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -49,7 +49,6 @@ obj-$(CONFIG_SENSORS_DS1621)	+= ds1621.o
 obj-$(CONFIG_SENSORS_EMC1403)   += emc1403.o
 obj-$(CONFIG_SENSORS_EMC2103)   += emc2103.o
 obj-$(CONFIG_SENSORS_EMC6W201)  += emc6w201.o
-obj-$(CONFIG_SENSORS_EXYNOS4_TMU)       += exynos4_tmu.o
 obj-$(CONFIG_SENSORS_F71805F)   += f71805f.o
 obj-$(CONFIG_SENSORS_F71882FG)  += f71882fg.o
 obj-$(CONFIG_SENSORS_F75375S)   += f75375s.o
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 996003b3438a..8f2b6eaf46b8 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -46,3 +46,10 @@ config RCAR_THERMAL
         help
           Enable this to plug the R-Car thermal sensor driver into the Linux
           thermal framework
+
+config EXYNOS_THERMAL
+        tristate "Temperature sensor on Samsung EXYNOS"
+        depends on ARCH_EXYNOS4 && THERMAL
+        help
+          If you say yes here you get support for TMU (Thermal Managment
+          Unit) on SAMSUNG EXYNOS series of SoC.
diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
index aae59ad57c42..885550dc64b7 100644
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -6,3 +6,4 @@ obj-$(CONFIG_THERMAL)		+= thermal_sys.o
 obj-$(CONFIG_CPU_THERMAL)               += cpu_cooling.o
 obj-$(CONFIG_SPEAR_THERMAL)             += spear_thermal.o
 obj-$(CONFIG_RCAR_THERMAL)      += rcar_thermal.o
+obj-$(CONFIG_EXYNOS_THERMAL)            += exynos_thermal.o
diff --git a/drivers/hwmon/exynos4_tmu.c b/drivers/thermal/exynos_thermal.c
index e912059140cd..556d15b4b029 100644
--- a/drivers/hwmon/exynos4_tmu.c
+++ b/drivers/thermal/exynos_thermal.c
@@ -1,8 +1,9 @@
 /*
- * exynos4_tmu.c - Samsung EXYNOS4 TMU (Thermal Management Unit)
+ * exynos_thermal.c - Samsung EXYNOS TMU (Thermal Management Unit)
  *
  *  Copyright (C) 2011 Samsung Electronics
  *  Donggeun Kim <dg77.kim@samsung.com>
+ *  Amit Daniel Kachhap <amit.kachhap@linaro.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -33,10 +34,7 @@
 #include <linux/io.h>
 #include <linux/mutex.h>
 
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-
-#include <linux/platform_data/exynos4_tmu.h>
+#include <linux/platform_data/exynos_thermal.h>
 
 #define EXYNOS4_TMU_REG_TRIMINFO        0x0
 #define EXYNOS4_TMU_REG_CONTROL         0x20
@@ -70,7 +68,6 @@
 
 struct exynos4_tmu_data {
         struct exynos4_tmu_platform_data *pdata;
-        struct device *hwmon_dev;
         struct resource *mem;
         void __iomem *base;
         int irq;
@@ -246,8 +243,6 @@ static void exynos4_tmu_work(struct work_struct *work)
 
         writel(EXYNOS4_TMU_INTCLEAR_VAL, data->base + EXYNOS4_TMU_REG_INTCLEAR);
 
-        kobject_uevent(&data->hwmon_dev->kobj, KOBJ_CHANGE);
-
         enable_irq(data->irq);
 
         clk_disable(data->clk);
@@ -264,87 +259,6 @@ static irqreturn_t exynos4_tmu_irq(int irq, void *id)
         return IRQ_HANDLED;
 }
 
-static ssize_t exynos4_tmu_show_name(struct device *dev,
-                struct device_attribute *attr, char *buf)
-{
-        return sprintf(buf, "exynos4-tmu\n");
-}
-
-static ssize_t exynos4_tmu_show_temp(struct device *dev,
-                struct device_attribute *attr, char *buf)
-{
-        struct exynos4_tmu_data *data = dev_get_drvdata(dev);
-        int ret;
-
-        ret = exynos4_tmu_read(data);
-        if (ret < 0)
-                return ret;
-
-        /* convert from degree Celsius to millidegree Celsius */
-        return sprintf(buf, "%d\n", ret * 1000);
-}
-
-static ssize_t exynos4_tmu_show_alarm(struct device *dev,
-                struct device_attribute *devattr, char *buf)
-{
-        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
-        struct exynos4_tmu_data *data = dev_get_drvdata(dev);
-        struct exynos4_tmu_platform_data *pdata = data->pdata;
-        int temp;