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>
This commit is contained in:
Amit Daniel Kachhap
Zhang Rui
Родитель
0236141837
Коммит
c48cbba6fe
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@ -46,36 +46,7 @@ The threshold levels are defined as follows:
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The threshold and each trigger_level are set
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through the corresponding registers.
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When an interrupt occurs, this driver notify user space of
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one of four threshold levels for the interrupt
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through kobject_uevent_env and sysfs_notify functions.
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When an interrupt occurs, this driver notify kernel thermal framework
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with the function exynos4_report_trigger.
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Although an interrupt condition for level_0 can be set,
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it is not notified to user space through sysfs_notify function.
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Sysfs Interface
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---------------
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name name of the temperature sensor
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RO
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temp1_input temperature
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RO
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temp1_max temperature for level_1 interrupt
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RO
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temp1_crit temperature for level_2 interrupt
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RO
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temp1_emergency temperature for level_3 interrupt
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RO
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temp1_max_alarm alarm for level_1 interrupt
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RO
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temp1_crit_alarm
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alarm for level_2 interrupt
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RO
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temp1_emergency_alarm
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alarm for level_3 interrupt
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RO
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it can be used to synchronize the cooling action.
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@ -324,16 +324,6 @@ config SENSORS_DA9052_ADC
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This driver can also be built as module. If so, the module
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will be called da9052-hwmon.
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config SENSORS_EXYNOS4_TMU
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tristate "Temperature sensor on Samsung EXYNOS4"
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depends on ARCH_EXYNOS4
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help
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If you say yes here you get support for TMU (Thermal Management
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Unit) on SAMSUNG EXYNOS4 series of SoC.
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This driver can also be built as a module. If so, the module
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will be called exynos4-tmu.
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config SENSORS_I5K_AMB
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tristate "FB-DIMM AMB temperature sensor on Intel 5000 series chipsets"
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depends on PCI && EXPERIMENTAL
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@ -49,7 +49,6 @@ obj-$(CONFIG_SENSORS_DS1621) += ds1621.o
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obj-$(CONFIG_SENSORS_EMC1403) += emc1403.o
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obj-$(CONFIG_SENSORS_EMC2103) += emc2103.o
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obj-$(CONFIG_SENSORS_EMC6W201) += emc6w201.o
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obj-$(CONFIG_SENSORS_EXYNOS4_TMU) += exynos4_tmu.o
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obj-$(CONFIG_SENSORS_F71805F) += f71805f.o
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obj-$(CONFIG_SENSORS_F71882FG) += f71882fg.o
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obj-$(CONFIG_SENSORS_F75375S) += f75375s.o
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@ -46,3 +46,10 @@ config RCAR_THERMAL
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help
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Enable this to plug the R-Car thermal sensor driver into the Linux
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thermal framework
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config EXYNOS_THERMAL
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tristate "Temperature sensor on Samsung EXYNOS"
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depends on ARCH_EXYNOS4 && THERMAL
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help
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If you say yes here you get support for TMU (Thermal Managment
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Unit) on SAMSUNG EXYNOS series of SoC.
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@ -6,3 +6,4 @@ obj-$(CONFIG_THERMAL) += thermal_sys.o
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obj-$(CONFIG_CPU_THERMAL) += cpu_cooling.o
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obj-$(CONFIG_SPEAR_THERMAL) += spear_thermal.o
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obj-$(CONFIG_RCAR_THERMAL) += rcar_thermal.o
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obj-$(CONFIG_EXYNOS_THERMAL) += exynos_thermal.o
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@ -1,8 +1,9 @@
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/*
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* exynos4_tmu.c - Samsung EXYNOS4 TMU (Thermal Management Unit)
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* exynos_thermal.c - Samsung EXYNOS TMU (Thermal Management Unit)
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*
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* Copyright (C) 2011 Samsung Electronics
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* Donggeun Kim <dg77.kim@samsung.com>
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* Amit Daniel Kachhap <amit.kachhap@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -33,10 +34,7 @@
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#include <linux/io.h>
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#include <linux/mutex.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/platform_data/exynos4_tmu.h>
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#include <linux/platform_data/exynos_thermal.h>
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#define EXYNOS4_TMU_REG_TRIMINFO 0x0
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#define EXYNOS4_TMU_REG_CONTROL 0x20
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@ -70,7 +68,6 @@
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struct exynos4_tmu_data {
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struct exynos4_tmu_platform_data *pdata;
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struct device *hwmon_dev;
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struct resource *mem;
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void __iomem *base;
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int irq;
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@ -246,8 +243,6 @@ static void exynos4_tmu_work(struct work_struct *work)
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writel(EXYNOS4_TMU_INTCLEAR_VAL, data->base + EXYNOS4_TMU_REG_INTCLEAR);
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kobject_uevent(&data->hwmon_dev->kobj, KOBJ_CHANGE);
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enable_irq(data->irq);
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clk_disable(data->clk);
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@ -264,87 +259,6 @@ static irqreturn_t exynos4_tmu_irq(int irq, void *id)
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return IRQ_HANDLED;
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}
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static ssize_t exynos4_tmu_show_name(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "exynos4-tmu\n");
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}
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static ssize_t exynos4_tmu_show_temp(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct exynos4_tmu_data *data = dev_get_drvdata(dev);
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int ret;
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ret = exynos4_tmu_read(data);
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if (ret < 0)
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return ret;
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/* convert from degree Celsius to millidegree Celsius */
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return sprintf(buf, "%d\n", ret * 1000);
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}
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static ssize_t exynos4_tmu_show_alarm(struct device *dev,
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struct device_attribute *devattr, char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct exynos4_tmu_data *data = dev_get_drvdata(dev);
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struct exynos4_tmu_platform_data *pdata = data->pdata;
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int temp;
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unsigned int trigger_level;
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temp = exynos4_tmu_read(data);
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if (temp < 0)
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return temp;
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trigger_level = pdata->threshold + pdata->trigger_levels[attr->index];
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return sprintf(buf, "%d\n", !!(temp > trigger_level));
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}
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static ssize_t exynos4_tmu_show_level(struct device *dev,
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struct device_attribute *devattr, char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct exynos4_tmu_data *data = dev_get_drvdata(dev);
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struct exynos4_tmu_platform_data *pdata = data->pdata;
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unsigned int temp = pdata->threshold +
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pdata->trigger_levels[attr->index];
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return sprintf(buf, "%u\n", temp * 1000);
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}
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static DEVICE_ATTR(name, S_IRUGO, exynos4_tmu_show_name, NULL);
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static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, exynos4_tmu_show_temp, NULL, 0);
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static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO,
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exynos4_tmu_show_alarm, NULL, 1);
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static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO,
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exynos4_tmu_show_alarm, NULL, 2);
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static SENSOR_DEVICE_ATTR(temp1_emergency_alarm, S_IRUGO,
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exynos4_tmu_show_alarm, NULL, 3);
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static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, exynos4_tmu_show_level, NULL, 1);
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static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, exynos4_tmu_show_level, NULL, 2);
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static SENSOR_DEVICE_ATTR(temp1_emergency, S_IRUGO,
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exynos4_tmu_show_level, NULL, 3);
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static struct attribute *exynos4_tmu_attributes[] = {
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&dev_attr_name.attr,
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&sensor_dev_attr_temp1_input.dev_attr.attr,
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&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
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&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
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&sensor_dev_attr_temp1_emergency_alarm.dev_attr.attr,
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&sensor_dev_attr_temp1_max.dev_attr.attr,
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&sensor_dev_attr_temp1_crit.dev_attr.attr,
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&sensor_dev_attr_temp1_emergency.dev_attr.attr,
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NULL,
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};
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static const struct attribute_group exynos4_tmu_attr_group = {
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.attrs = exynos4_tmu_attributes,
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};
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static int __devinit exynos4_tmu_probe(struct platform_device *pdev)
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{
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struct exynos4_tmu_data *data;
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@ -418,25 +332,9 @@ static int __devinit exynos4_tmu_probe(struct platform_device *pdev)
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goto err_clk;
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}
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ret = sysfs_create_group(&pdev->dev.kobj, &exynos4_tmu_attr_group);
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if (ret) {
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dev_err(&pdev->dev, "Failed to create sysfs group\n");
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goto err_clk;
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}
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data->hwmon_dev = hwmon_device_register(&pdev->dev);
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if (IS_ERR(data->hwmon_dev)) {
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ret = PTR_ERR(data->hwmon_dev);
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dev_err(&pdev->dev, "Failed to register hwmon device\n");
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goto err_create_group;
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}
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exynos4_tmu_control(pdev, true);
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return 0;
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err_create_group:
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sysfs_remove_group(&pdev->dev.kobj, &exynos4_tmu_attr_group);
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err_clk:
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platform_set_drvdata(pdev, NULL);
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clk_put(data->clk);
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@ -458,9 +356,6 @@ static int __devexit exynos4_tmu_remove(struct platform_device *pdev)
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exynos4_tmu_control(pdev, false);
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hwmon_device_unregister(data->hwmon_dev);
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sysfs_remove_group(&pdev->dev.kobj, &exynos4_tmu_attr_group);
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clk_put(data->clk);
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free_irq(data->irq, data);
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@ -495,7 +390,7 @@ static int exynos4_tmu_resume(struct device *dev)
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static SIMPLE_DEV_PM_OPS(exynos4_tmu_pm,
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exynos4_tmu_suspend, exynos4_tmu_resume);
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#define EXYNOS4_TMU_PM &exynos4_tmu_pm
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#define EXYNOS4_TMU_PM (&exynos4_tmu_pm)
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#else
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#define EXYNOS4_TMU_PM NULL
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#endif
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@ -1,5 +1,5 @@
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/*
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* exynos4_tmu.h - Samsung EXYNOS4 TMU (Thermal Management Unit)
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* exynos_thermal.h - Samsung EXYNOS4 TMU (Thermal Management Unit)
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*
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* Copyright (C) 2011 Samsung Electronics
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* Donggeun Kim <dg77.kim@samsung.com>
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@ -19,8 +19,8 @@
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _LINUX_EXYNOS4_TMU_H
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#define _LINUX_EXYNOS4_TMU_H
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#ifndef _LINUX_EXYNOS_THERMAL_H
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#define _LINUX_EXYNOS_THERMAL_H
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enum calibration_type {
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TYPE_ONE_POINT_TRIMMING,
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@ -80,4 +80,4 @@ struct exynos4_tmu_platform_data {
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enum calibration_type cal_type;
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};
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#endif /* _LINUX_EXYNOS4_TMU_H */
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#endif /* _LINUX_EXYNOS_THERMAL_H */
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