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>
Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/Documentation/hwmon/exynos4_tmu b/Documentation/thermal/exynos_thermal
similarity index 71%
rename from Documentation/hwmon/exynos4_tmu
rename to Documentation/thermal/exynos_thermal
index c3c6b41db607112d1502feb1b1fb36ed75da2b95..2b46f67b1ccbfbc8ba0c8ec813e7c00f71d5582a 100644 (file)
--- 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 f50cb440575d5ccf148cb8538353baa06a8e597f..df463a3e88d4abc69969def42742c4e603df5363 100644 (file)
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -334,16 +334,6 @@ 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 8b3d4382f61eed6b33e149740d6c12c6b4d868ce..b622dcb9f19831041f136395a3c05a5f776f8ec7 100644 (file)
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -50,7 +50,6 @@ 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 996003b3438a0d12ccc8822d022b1a0c33ea782f..09bb68551f01d6fc0e0a5d8224831403041d0d77 100644 (file)
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -46,3 +46,12 @@ 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 EXYNOS4"
+       depends on ARCH_EXYNOS4 && THERMAL
+       help
+         If you say yes here you get support for TMU (Thermal Managment
+         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

diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
index 8d626d211f8a553ffa47c73ac3ee44d985ba8920..8e63d7282db89b07dbbc398f32943f0fb69f6ead 100644 (file)
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -4,5 +4,6 @@
 
 obj-$(CONFIG_THERMAL)          += thermal_sys.o
 obj-$(CONFIG_CPU_THERMAL)      += cpu_cooling.o
+obj-$(CONFIG_EXYNOS_THERMAL)   += exynos_thermal.o
 obj-$(CONFIG_SPEAR_THERMAL)    += spear_thermal.o
 obj-$(CONFIG_RCAR_THERMAL)     += rcar_thermal.o

diff --git a/drivers/hwmon/exynos4_tmu.c b/drivers/thermal/exynos_thermal.c
similarity index 74%
rename from drivers/hwmon/exynos4_tmu.c
rename to drivers/thermal/exynos_thermal.c
index e912059140cd492306b607a7a108931107bf9168..556d15b4b029f8cc269040682b6b4dd50c48ac1a 100644 (file)
--- 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;
-       unsigned int trigger_level;
-
-       temp = exynos4_tmu_read(data);
-       if (temp < 0)
-               return temp;
-
-       trigger_level = pdata->threshold + pdata->trigger_levels[attr->index];
-
-       return sprintf(buf, "%d\n", !!(temp > trigger_level));
-}
-
-static ssize_t exynos4_tmu_show_level(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;
-       unsigned int temp = pdata->threshold +
-                       pdata->trigger_levels[attr->index];
-
-       return sprintf(buf, "%u\n", temp * 1000);
-}
-
-static DEVICE_ATTR(name, S_IRUGO, exynos4_tmu_show_name, NULL);
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, exynos4_tmu_show_temp, NULL, 0);
-
-static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO,
-               exynos4_tmu_show_alarm, NULL, 1);
-static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO,
-               exynos4_tmu_show_alarm, NULL, 2);
-static SENSOR_DEVICE_ATTR(temp1_emergency_alarm, S_IRUGO,
-               exynos4_tmu_show_alarm, NULL, 3);
-
-static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, exynos4_tmu_show_level, NULL, 1);
-static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, exynos4_tmu_show_level, NULL, 2);
-static SENSOR_DEVICE_ATTR(temp1_emergency, S_IRUGO,
-               exynos4_tmu_show_level, NULL, 3);
-
-static struct attribute *exynos4_tmu_attributes[] = {
-       &dev_attr_name.attr,
-       &sensor_dev_attr_temp1_input.dev_attr.attr,
-       &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
-       &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
-       &sensor_dev_attr_temp1_emergency_alarm.dev_attr.attr,
-       &sensor_dev_attr_temp1_max.dev_attr.attr,
-       &sensor_dev_attr_temp1_crit.dev_attr.attr,
-       &sensor_dev_attr_temp1_emergency.dev_attr.attr,
-       NULL,
-};
-
-static const struct attribute_group exynos4_tmu_attr_group = {
-       .attrs = exynos4_tmu_attributes,
-};
-
 static int __devinit exynos4_tmu_probe(struct platform_device *pdev)
 {
        struct exynos4_tmu_data *data;
@@ -418,25 +332,9 @@ static int __devinit exynos4_tmu_probe(struct platform_device *pdev)
                goto err_clk;
        }
 
-       ret = sysfs_create_group(&pdev->dev.kobj, &exynos4_tmu_attr_group);
-       if (ret) {
-               dev_err(&pdev->dev, "Failed to create sysfs group\n");
-               goto err_clk;
-       }
-
-       data->hwmon_dev = hwmon_device_register(&pdev->dev);
-       if (IS_ERR(data->hwmon_dev)) {
-               ret = PTR_ERR(data->hwmon_dev);
-               dev_err(&pdev->dev, "Failed to register hwmon device\n");
-               goto err_create_group;
-       }
-
        exynos4_tmu_control(pdev, true);
 
        return 0;
-
-err_create_group:
-       sysfs_remove_group(&pdev->dev.kobj, &exynos4_tmu_attr_group);
 err_clk:
        platform_set_drvdata(pdev, NULL);
        clk_put(data->clk);
@@ -458,9 +356,6 @@ static int __devexit exynos4_tmu_remove(struct platform_device *pdev)
 
        exynos4_tmu_control(pdev, false);
 
-       hwmon_device_unregister(data->hwmon_dev);
-       sysfs_remove_group(&pdev->dev.kobj, &exynos4_tmu_attr_group);
-
        clk_put(data->clk);
 
        free_irq(data->irq, data);
@@ -495,7 +390,7 @@ static int exynos4_tmu_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(exynos4_tmu_pm,
                         exynos4_tmu_suspend, exynos4_tmu_resume);
-#define EXYNOS4_TMU_PM &exynos4_tmu_pm
+#define EXYNOS4_TMU_PM (&exynos4_tmu_pm)
 #else
 #define EXYNOS4_TMU_PM NULL
 #endif

diff --git a/include/linux/platform_data/exynos4_tmu.h b/include/linux/platform_data/exynos_thermal.h
similarity index 94%
rename from include/linux/platform_data/exynos4_tmu.h
rename to include/linux/platform_data/exynos_thermal.h
index 39e038cca590ab8b36c1bf16ad638324b33f36c8..d6c3f93e7c6253bc3d3fdedf479ad45c0542b6d2 100644 (file)
--- a/include/linux/platform_data/exynos4_tmu.h
+++ b/include/linux/platform_data/exynos_thermal.h
@@ -1,5 +1,5 @@
 /*
- * exynos4_tmu.h - Samsung EXYNOS4 TMU (Thermal Management Unit)
+ * exynos_thermal.h - Samsung EXYNOS4 TMU (Thermal Management Unit)
  *
  *  Copyright (C) 2011 Samsung Electronics
  *  Donggeun Kim <dg77.kim@samsung.com>
@@ -19,8 +19,8 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#ifndef _LINUX_EXYNOS4_TMU_H
-#define _LINUX_EXYNOS4_TMU_H
+#ifndef _LINUX_EXYNOS_THERMAL_H
+#define _LINUX_EXYNOS_THERMAL_H
 
 enum calibration_type {
        TYPE_ONE_POINT_TRIMMING,
@@ -80,4 +80,4 @@ struct exynos4_tmu_platform_data {
 
        enum calibration_type cal_type;
 };
-#endif /* _LINUX_EXYNOS4_TMU_H */
+#endif /* _LINUX_EXYNOS_THERMAL_H */