From c68213780e5a443d50d9f7291203591b0c5f9b60 Mon Sep 17 00:00:00 2001 From: Amit Daniel Kachhap Date: Mon, 24 Jun 2013 16:20:22 +0530 Subject: thermal: exynos: Moving exynos thermal files into samsung directory This movement of files is done for easy maintenance and adding more new sensor's support for exynos platform easily . This will also help in bifurcating exynos common, sensor driver and sensor data related parts. Acked-by: Kukjin Kim Acked-by: Jonghwa Lee Acked-by: Eduardo Valentin Signed-off-by: Amit Daniel Kachhap Signed-off-by: Eduardo Valentin --- drivers/thermal/exynos_thermal.c | 1059 -------------------------------------- 1 file changed, 1059 deletions(-) delete mode 100644 drivers/thermal/exynos_thermal.c (limited to 'drivers/thermal/exynos_thermal.c') diff --git a/drivers/thermal/exynos_thermal.c b/drivers/thermal/exynos_thermal.c deleted file mode 100644 index 9af4b93c9f86..000000000000 --- a/drivers/thermal/exynos_thermal.c +++ /dev/null @@ -1,1059 +0,0 @@ -/* - * exynos_thermal.c - Samsung EXYNOS TMU (Thermal Management Unit) - * - * Copyright (C) 2011 Samsung Electronics - * Donggeun Kim - * Amit Daniel Kachhap - * - * 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 - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* Exynos generic registers */ -#define EXYNOS_TMU_REG_TRIMINFO 0x0 -#define EXYNOS_TMU_REG_CONTROL 0x20 -#define EXYNOS_TMU_REG_STATUS 0x28 -#define EXYNOS_TMU_REG_CURRENT_TEMP 0x40 -#define EXYNOS_TMU_REG_INTEN 0x70 -#define EXYNOS_TMU_REG_INTSTAT 0x74 -#define EXYNOS_TMU_REG_INTCLEAR 0x78 - -#define EXYNOS_TMU_TRIM_TEMP_MASK 0xff -#define EXYNOS_TMU_GAIN_SHIFT 8 -#define EXYNOS_TMU_REF_VOLTAGE_SHIFT 24 -#define EXYNOS_TMU_CORE_ON 3 -#define EXYNOS_TMU_CORE_OFF 2 -#define EXYNOS_TMU_DEF_CODE_TO_TEMP_OFFSET 50 - -/* Exynos4210 specific registers */ -#define EXYNOS4210_TMU_REG_THRESHOLD_TEMP 0x44 -#define EXYNOS4210_TMU_REG_TRIG_LEVEL0 0x50 -#define EXYNOS4210_TMU_REG_TRIG_LEVEL1 0x54 -#define EXYNOS4210_TMU_REG_TRIG_LEVEL2 0x58 -#define EXYNOS4210_TMU_REG_TRIG_LEVEL3 0x5C -#define EXYNOS4210_TMU_REG_PAST_TEMP0 0x60 -#define EXYNOS4210_TMU_REG_PAST_TEMP1 0x64 -#define EXYNOS4210_TMU_REG_PAST_TEMP2 0x68 -#define EXYNOS4210_TMU_REG_PAST_TEMP3 0x6C - -#define EXYNOS4210_TMU_TRIG_LEVEL0_MASK 0x1 -#define EXYNOS4210_TMU_TRIG_LEVEL1_MASK 0x10 -#define EXYNOS4210_TMU_TRIG_LEVEL2_MASK 0x100 -#define EXYNOS4210_TMU_TRIG_LEVEL3_MASK 0x1000 -#define EXYNOS4210_TMU_INTCLEAR_VAL 0x1111 - -/* Exynos5250 and Exynos4412 specific registers */ -#define EXYNOS_TMU_TRIMINFO_CON 0x14 -#define EXYNOS_THD_TEMP_RISE 0x50 -#define EXYNOS_THD_TEMP_FALL 0x54 -#define EXYNOS_EMUL_CON 0x80 - -#define EXYNOS_TRIMINFO_RELOAD 0x1 -#define EXYNOS_TMU_CLEAR_RISE_INT 0x111 -#define EXYNOS_TMU_CLEAR_FALL_INT (0x111 << 12) -#define EXYNOS_MUX_ADDR_VALUE 6 -#define EXYNOS_MUX_ADDR_SHIFT 20 -#define EXYNOS_TMU_TRIP_MODE_SHIFT 13 - -#define EFUSE_MIN_VALUE 40 -#define EFUSE_MAX_VALUE 100 - -/* In-kernel thermal framework related macros & definations */ -#define SENSOR_NAME_LEN 16 -#define MAX_TRIP_COUNT 8 -#define MAX_COOLING_DEVICE 4 -#define MAX_THRESHOLD_LEVS 4 - -#define ACTIVE_INTERVAL 500 -#define IDLE_INTERVAL 10000 -#define MCELSIUS 1000 - -#ifdef CONFIG_THERMAL_EMULATION -#define EXYNOS_EMUL_TIME 0x57F0 -#define EXYNOS_EMUL_TIME_SHIFT 16 -#define EXYNOS_EMUL_DATA_SHIFT 8 -#define EXYNOS_EMUL_DATA_MASK 0xFF -#define EXYNOS_EMUL_ENABLE 0x1 -#endif /* CONFIG_THERMAL_EMULATION */ - -/* CPU Zone information */ -#define PANIC_ZONE 4 -#define WARN_ZONE 3 -#define MONITOR_ZONE 2 -#define SAFE_ZONE 1 - -#define GET_ZONE(trip) (trip + 2) -#define GET_TRIP(zone) (zone - 2) - -#define EXYNOS_ZONE_COUNT 3 - -struct exynos_tmu_data { - struct exynos_tmu_platform_data *pdata; - struct resource *mem; - void __iomem *base; - int irq; - enum soc_type soc; - struct work_struct irq_work; - struct mutex lock; - struct clk *clk; - u8 temp_error1, temp_error2; -}; - -struct thermal_trip_point_conf { - int trip_val[MAX_TRIP_COUNT]; - int trip_count; - u8 trigger_falling; -}; - -struct thermal_cooling_conf { - struct freq_clip_table freq_data[MAX_TRIP_COUNT]; - int freq_clip_count; -}; - -struct thermal_sensor_conf { - char name[SENSOR_NAME_LEN]; - int (*read_temperature)(void *data); - int (*write_emul_temp)(void *drv_data, unsigned long temp); - struct thermal_trip_point_conf trip_data; - struct thermal_cooling_conf cooling_data; - void *private_data; -}; - -struct exynos_thermal_zone { - enum thermal_device_mode mode; - struct thermal_zone_device *therm_dev; - struct thermal_cooling_device *cool_dev[MAX_COOLING_DEVICE]; - unsigned int cool_dev_size; - struct platform_device *exynos4_dev; - struct thermal_sensor_conf *sensor_conf; - bool bind; -}; - -static struct exynos_thermal_zone *th_zone; -static void exynos_unregister_thermal(void); -static int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf); - -/* Get mode callback functions for thermal zone */ -static int exynos_get_mode(struct thermal_zone_device *thermal, - enum thermal_device_mode *mode) -{ - if (th_zone) - *mode = th_zone->mode; - return 0; -} - -/* Set mode callback functions for thermal zone */ -static int exynos_set_mode(struct thermal_zone_device *thermal, - enum thermal_device_mode mode) -{ - if (!th_zone->therm_dev) { - pr_notice("thermal zone not registered\n"); - return 0; - } - - mutex_lock(&th_zone->therm_dev->lock); - - if (mode == THERMAL_DEVICE_ENABLED && - !th_zone->sensor_conf->trip_data.trigger_falling) - th_zone->therm_dev->polling_delay = IDLE_INTERVAL; - else - th_zone->therm_dev->polling_delay = 0; - - mutex_unlock(&th_zone->therm_dev->lock); - - th_zone->mode = mode; - thermal_zone_device_update(th_zone->therm_dev); - pr_info("thermal polling set for duration=%d msec\n", - th_zone->therm_dev->polling_delay); - return 0; -} - - -/* Get trip type callback functions for thermal zone */ -static int exynos_get_trip_type(struct thermal_zone_device *thermal, int trip, - enum thermal_trip_type *type) -{ - switch (GET_ZONE(trip)) { - case MONITOR_ZONE: - case WARN_ZONE: - *type = THERMAL_TRIP_ACTIVE; - break; - case PANIC_ZONE: - *type = THERMAL_TRIP_CRITICAL; - break; - default: - return -EINVAL; - } - return 0; -} - -/* Get trip temperature callback functions for thermal zone */ -static int exynos_get_trip_temp(struct thermal_zone_device *thermal, int trip, - unsigned long *temp) -{ - if (trip < GET_TRIP(MONITOR_ZONE) || trip > GET_TRIP(PANIC_ZONE)) - return -EINVAL; - - *temp = th_zone->sensor_conf->trip_data.trip_val[trip]; - /* convert the temperature into millicelsius */ - *temp = *temp * MCELSIUS; - - return 0; -} - -/* Get critical temperature callback functions for thermal zone */ -static int exynos_get_crit_temp(struct thermal_zone_device *thermal, - unsigned long *temp) -{ - int ret; - /* Panic zone */ - ret = exynos_get_trip_temp(thermal, GET_TRIP(PANIC_ZONE), temp); - return ret; -} - -/* Bind callback functions for thermal zone */ -static int exynos_bind(struct thermal_zone_device *thermal, - struct thermal_cooling_device *cdev) -{ - int ret = 0, i, tab_size, level; - struct freq_clip_table *tab_ptr, *clip_data; - struct thermal_sensor_conf *data = th_zone->sensor_conf; - - tab_ptr = (struct freq_clip_table *)data->cooling_data.freq_data; - tab_size = data->cooling_data.freq_clip_count; - - if (tab_ptr == NULL || tab_size == 0) - return -EINVAL; - - /* find the cooling device registered*/ - for (i = 0; i < th_zone->cool_dev_size; i++) - if (cdev == th_zone->cool_dev[i]) - break; - - /* No matching cooling device */ - if (i == th_zone->cool_dev_size) - return 0; - - /* Bind the thermal zone to the cpufreq cooling device */ - for (i = 0; i < tab_size; i++) { - clip_data = (struct freq_clip_table *)&(tab_ptr[i]); - level = cpufreq_cooling_get_level(0, clip_data->freq_clip_max); - if (level == THERMAL_CSTATE_INVALID) - return 0; - switch (GET_ZONE(i)) { - case MONITOR_ZONE: - case WARN_ZONE: - if (thermal_zone_bind_cooling_device(thermal, i, cdev, - level, 0)) { - pr_err("error binding cdev inst %d\n", i); - ret = -EINVAL; - } - th_zone->bind = true; - break; - default: - ret = -EINVAL; - } - } - - return ret; -} - -/* Unbind callback functions for thermal zone */ -static int exynos_unbind(struct thermal_zone_device *thermal, - struct thermal_cooling_device *cdev) -{ - int ret = 0, i, tab_size; - struct thermal_sensor_conf *data = th_zone->sensor_conf; - - if (th_zone->bind == false) - return 0; - - tab_size = data->cooling_data.freq_clip_count; - - if (tab_size == 0) - return -EINVAL; - - /* find the cooling device registered*/ - for (i = 0; i < th_zone->cool_dev_size; i++) - if (cdev == th_zone->cool_dev[i]) - break; - - /* No matching cooling device */ - if (i == th_zone->cool_dev_size) - return 0; - - /* Bind the thermal zone to the cpufreq cooling device */ - for (i = 0; i < tab_size; i++) { - switch (GET_ZONE(i)) { - case MONITOR_ZONE: - case WARN_ZONE: - if (thermal_zone_unbind_cooling_device(thermal, i, - cdev)) { - pr_err("error unbinding cdev inst=%d\n", i); - ret = -EINVAL; - } - th_zone->bind = false; - break; - default: - ret = -EINVAL; - } - } - return ret; -} - -/* Get temperature callback functions for thermal zone */ -static int exynos_get_temp(struct thermal_zone_device *thermal, - unsigned long *temp) -{ - void *data; - - if (!th_zone->sensor_conf) { - pr_info("Temperature sensor not initialised\n"); - return -EINVAL; - } - data = th_zone->sensor_conf->private_data; - *temp = th_zone->sensor_conf->read_temperature(data); - /* convert the temperature into millicelsius */ - *temp = *temp * MCELSIUS; - return 0; -} - -/* Get temperature callback functions for thermal zone */ -static int exynos_set_emul_temp(struct thermal_zone_device *thermal, - unsigned long temp) -{ - void *data; - int ret = -EINVAL; - - if (!th_zone->sensor_conf) { - pr_info("Temperature sensor not initialised\n"); - return -EINVAL; - } - data = th_zone->sensor_conf->private_data; - if (th_zone->sensor_conf->write_emul_temp) - ret = th_zone->sensor_conf->write_emul_temp(data, temp); - return ret; -} - -/* Get the temperature trend */ -static int exynos_get_trend(struct thermal_zone_device *thermal, - int trip, enum thermal_trend *trend) -{ - int ret; - unsigned long trip_temp; - - ret = exynos_get_trip_temp(thermal, trip, &trip_temp); - if (ret < 0) - return ret; - - if (thermal->temperature >= trip_temp) - *trend = THERMAL_TREND_RAISE_FULL; - else - *trend = THERMAL_TREND_DROP_FULL; - - return 0; -} -/* Operation callback functions for thermal zone */ -static struct thermal_zone_device_ops const exynos_dev_ops = { - .bind = exynos_bind, - .unbind = exynos_unbind, - .get_temp = exynos_get_temp, - .set_emul_temp = exynos_set_emul_temp, - .get_trend = exynos_get_trend, - .get_mode = exynos_get_mode, - .set_mode = exynos_set_mode, - .get_trip_type = exynos_get_trip_type, - .get_trip_temp = exynos_get_trip_temp, - .get_crit_temp = exynos_get_crit_temp, -}; - -/* - * This function may be called from interrupt based temperature sensor - * when threshold is changed. - */ -static void exynos_report_trigger(void) -{ - unsigned int i; - char data[10]; - char *envp[] = { data, NULL }; - - if (!th_zone || !th_zone->therm_dev) - return; - if (th_zone->bind == false) { - for (i = 0; i < th_zone->cool_dev_size; i++) { - if (!th_zone->cool_dev[i]) - continue; - exynos_bind(th_zone->therm_dev, - th_zone->cool_dev[i]); - } - } - - thermal_zone_device_update(th_zone->therm_dev); - - mutex_lock(&th_zone->therm_dev->lock); - /* Find the level for which trip happened */ - for (i = 0; i < th_zone->sensor_conf->trip_data.trip_count; i++) { - if (th_zone->therm_dev->last_temperature < - th_zone->sensor_conf->trip_data.trip_val[i] * MCELSIUS) - break; - } - - if (th_zone->mode == THERMAL_DEVICE_ENABLED && - !th_zone->sensor_conf->trip_data.trigger_falling) { - if (i > 0) - th_zone->therm_dev->polling_delay = ACTIVE_INTERVAL; - else - th_zone->therm_dev->polling_delay = IDLE_INTERVAL; - } - - snprintf(data, sizeof(data), "%u", i); - kobject_uevent_env(&th_zone->therm_dev->device.kobj, KOBJ_CHANGE, envp); - mutex_unlock(&th_zone->therm_dev->lock); -} - -/* Register with the in-kernel thermal management */ -static int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf) -{ - int ret; - struct cpumask mask_val; - - if (!sensor_conf || !sensor_conf->read_temperature) { - pr_err("Temperature sensor not initialised\n"); - return -EINVAL; - } - - th_zone = kzalloc(sizeof(struct exynos_thermal_zone), GFP_KERNEL); - if (!th_zone) - return -ENOMEM; - - th_zone->sensor_conf = sensor_conf; - cpumask_set_cpu(0, &mask_val); - th_zone->cool_dev[0] = cpufreq_cooling_register(&mask_val); - if (IS_ERR(th_zone->cool_dev[0])) { - pr_err("Failed to register cpufreq cooling device\n"); - ret = -EINVAL; - goto err_unregister; - } - th_zone->cool_dev_size++; - - th_zone->therm_dev = thermal_zone_device_register(sensor_conf->name, - EXYNOS_ZONE_COUNT, 0, NULL, &exynos_dev_ops, NULL, 0, - sensor_conf->trip_data.trigger_falling ? - 0 : IDLE_INTERVAL); - - if (IS_ERR(th_zone->therm_dev)) { - pr_err("Failed to register thermal zone device\n"); - ret = PTR_ERR(th_zone->therm_dev); - goto err_unregister; - } - th_zone->mode = THERMAL_DEVICE_ENABLED; - - pr_info("Exynos: Kernel Thermal management registered\n"); - - return 0; - -err_unregister: - exynos_unregister_thermal(); - return ret; -} - -/* Un-Register with the in-kernel thermal management */ -static void exynos_unregister_thermal(void) -{ - int i; - - if (!th_zone) - return; - - if (th_zone->therm_dev) - thermal_zone_device_unregister(th_zone->therm_dev); - - for (i = 0; i < th_zone->cool_dev_size; i++) { - if (th_zone->cool_dev[i]) - cpufreq_cooling_unregister(th_zone->cool_dev[i]); - } - - kfree(th_zone); - pr_info("Exynos: Kernel Thermal management unregistered\n"); -} - -/* - * TMU treats temperature as a mapped temperature code. - * The temperature is converted differently depending on the calibration type. - */ -static int temp_to_code(struct exynos_tmu_data *data, u8 temp) -{ - struct exynos_tmu_platform_data *pdata = data->pdata; - int temp_code; - - if (data->soc == SOC_ARCH_EXYNOS4210) - /* temp should range between 25 and 125 */ - if (temp < 25 || temp > 125) { - temp_code = -EINVAL; - goto out; - } - - switch (pdata->cal_type) { - case TYPE_TWO_POINT_TRIMMING: - temp_code = (temp - 25) * - (data->temp_error2 - data->temp_error1) / - (85 - 25) + data->temp_error1; - break; - case TYPE_ONE_POINT_TRIMMING: - temp_code = temp + data->temp_error1 - 25; - break; - default: - temp_code = temp + EXYNOS_TMU_DEF_CODE_TO_TEMP_OFFSET; - break; - } -out: - return temp_code; -} - -/* - * Calculate a temperature value from a temperature code. - * The unit of the temperature is degree Celsius. - */ -static int code_to_temp(struct exynos_tmu_data *data, u8 temp_code) -{ - struct exynos_tmu_platform_data *pdata = data->pdata; - int temp; - - if (data->soc == SOC_ARCH_EXYNOS4210) - /* temp_code should range between 75 and 175 */ - if (temp_code < 75 || temp_code > 175) { - temp = -ENODATA; - goto out; - } - - switch (pdata->cal_type) { - case TYPE_TWO_POINT_TRIMMING: - temp = (temp_code - data->temp_error1) * (85 - 25) / - (data->temp_error2 - data->temp_error1) + 25; - break; - case TYPE_ONE_POINT_TRIMMING: - temp = temp_code - data->temp_error1 + 25; - break; - default: - temp = temp_code - EXYNOS_TMU_DEF_CODE_TO_TEMP_OFFSET; - break; - } -out: - return temp; -} - -static int exynos_tmu_initialize(struct platform_device *pdev) -{ - struct exynos_tmu_data *data = platform_get_drvdata(pdev); - struct exynos_tmu_platform_data *pdata = data->pdata; - unsigned int status, trim_info; - unsigned int rising_threshold = 0, falling_threshold = 0; - int ret = 0, threshold_code, i, trigger_levs = 0; - - mutex_lock(&data->lock); - clk_enable(data->clk); - - status = readb(data->base + EXYNOS_TMU_REG_STATUS); - if (!status) { - ret = -EBUSY; - goto out; - } - - if (data->soc == SOC_ARCH_EXYNOS) { - __raw_writel(EXYNOS_TRIMINFO_RELOAD, - data->base + EXYNOS_TMU_TRIMINFO_CON); - } - /* Save trimming info in order to perform calibration */ - trim_info = readl(data->base + EXYNOS_TMU_REG_TRIMINFO); - data->temp_error1 = trim_info & EXYNOS_TMU_TRIM_TEMP_MASK; - data->temp_error2 = ((trim_info >> 8) & EXYNOS_TMU_TRIM_TEMP_MASK); - - if ((EFUSE_MIN_VALUE > data->temp_error1) || - (data->temp_error1 > EFUSE_MAX_VALUE) || - (data->temp_error2 != 0)) - data->temp_error1 = pdata->efuse_value; - - /* Count trigger levels to be enabled */ - for (i = 0; i < MAX_THRESHOLD_LEVS; i++) - if (pdata->trigger_levels[i]) - trigger_levs++; - - if (data->soc == SOC_ARCH_EXYNOS4210) { - /* Write temperature code for threshold */ - threshold_code = temp_to_code(data, pdata->threshold); - if (threshold_code < 0) { - ret = threshold_code; - goto out; - } - writeb(threshold_code, - data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP); - for (i = 0; i < trigger_levs; i++) - writeb(pdata->trigger_levels[i], - data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + i * 4); - - writel(EXYNOS4210_TMU_INTCLEAR_VAL, - data->base + EXYNOS_TMU_REG_INTCLEAR); - } else if (data->soc == SOC_ARCH_EXYNOS) { - /* Write temperature code for rising and falling threshold */ - for (i = 0; i < trigger_levs; i++) { - threshold_code = temp_to_code(data, - pdata->trigger_levels[i]); - if (threshold_code < 0) { - ret = threshold_code; - goto out; - } - rising_threshold |= threshold_code << 8 * i; - if (pdata->threshold_falling) { - threshold_code = temp_to_code(data, - pdata->trigger_levels[i] - - pdata->threshold_falling); - if (threshold_code > 0) - falling_threshold |= - threshold_code << 8 * i; - } - } - - writel(rising_threshold, - data->base + EXYNOS_THD_TEMP_RISE); - writel(falling_threshold, - data->base + EXYNOS_THD_TEMP_FALL); - - writel(EXYNOS_TMU_CLEAR_RISE_INT | EXYNOS_TMU_CLEAR_FALL_INT, - data->base + EXYNOS_TMU_REG_INTCLEAR); - } -out: - clk_disable(data->clk); - mutex_unlock(&data->lock); - - return ret; -} - -static void exynos_tmu_control(struct platform_device *pdev, bool on) -{ - struct exynos_tmu_data *data = platform_get_drvdata(pdev); - struct exynos_tmu_platform_data *pdata = data->pdata; - unsigned int con, interrupt_en; - - mutex_lock(&data->lock); - clk_enable(data->clk); - - con = pdata->reference_voltage << EXYNOS_TMU_REF_VOLTAGE_SHIFT | - pdata->gain << EXYNOS_TMU_GAIN_SHIFT; - - if (data->soc == SOC_ARCH_EXYNOS) { - con |= pdata->noise_cancel_mode << EXYNOS_TMU_TRIP_MODE_SHIFT; - con |= (EXYNOS_MUX_ADDR_VALUE << EXYNOS_MUX_ADDR_SHIFT); - } - - if (on) { - con |= EXYNOS_TMU_CORE_ON; - interrupt_en = pdata->trigger_level3_en << 12 | - pdata->trigger_level2_en << 8 | - pdata->trigger_level1_en << 4 | - pdata->trigger_level0_en; - if (pdata->threshold_falling) - interrupt_en |= interrupt_en << 16; - } else { - con |= EXYNOS_TMU_CORE_OFF; - interrupt_en = 0; /* Disable all interrupts */ - } - writel(interrupt_en, data->base + EXYNOS_TMU_REG_INTEN); - writel(con, data->base + EXYNOS_TMU_REG_CONTROL); - - clk_disable(data->clk); - mutex_unlock(&data->lock); -} - -static int exynos_tmu_read(struct exynos_tmu_data *data) -{ - u8 temp_code; - int temp; - - mutex_lock(&data->lock); - clk_enable(data->clk); - - temp_code = readb(data->base + EXYNOS_TMU_REG_CURRENT_TEMP); - temp = code_to_temp(data, temp_code); - - clk_disable(data->clk); - mutex_unlock(&data->lock); - - return temp; -} - -#ifdef CONFIG_THERMAL_EMULATION -static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp) -{ - struct exynos_tmu_data *data = drv_data; - unsigned int reg; - int ret = -EINVAL; - - if (data->soc == SOC_ARCH_EXYNOS4210) - goto out; - - if (temp && temp < MCELSIUS) - goto out; - - mutex_lock(&data->lock); - clk_enable(data->clk); - - reg = readl(data->base + EXYNOS_EMUL_CON); - - if (temp) { - temp /= MCELSIUS; - - reg = (EXYNOS_EMUL_TIME << EXYNOS_EMUL_TIME_SHIFT) | - (temp_to_code(data, temp) - << EXYNOS_EMUL_DATA_SHIFT) | EXYNOS_EMUL_ENABLE; - } else { - reg &= ~EXYNOS_EMUL_ENABLE; - } - - writel(reg, data->base + EXYNOS_EMUL_CON); - - clk_disable(data->clk); - mutex_unlock(&data->lock); - return 0; -out: - return ret; -} -#else -static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp) - { return -EINVAL; } -#endif/*CONFIG_THERMAL_EMULATION*/ - -static void exynos_tmu_work(struct work_struct *work) -{ - struct exynos_tmu_data *data = container_of(work, - struct exynos_tmu_data, irq_work); - - exynos_report_trigger(); - mutex_lock(&data->lock); - clk_enable(data->clk); - if (data->soc == SOC_ARCH_EXYNOS) - writel(EXYNOS_TMU_CLEAR_RISE_INT | - EXYNOS_TMU_CLEAR_FALL_INT, - data->base + EXYNOS_TMU_REG_INTCLEAR); - else - writel(EXYNOS4210_TMU_INTCLEAR_VAL, - data->base + EXYNOS_TMU_REG_INTCLEAR); - clk_disable(data->clk); - mutex_unlock(&data->lock); - - enable_irq(data->irq); -} - -static irqreturn_t exynos_tmu_irq(int irq, void *id) -{ - struct exynos_tmu_data *data = id; - - disable_irq_nosync(irq); - schedule_work(&data->irq_work); - - return IRQ_HANDLED; -} -static struct thermal_sensor_conf exynos_sensor_conf = { - .name = "exynos-therm", - .read_temperature = (int (*)(void *))exynos_tmu_read, - .write_emul_temp = exynos_tmu_set_emulation, -}; - -#if defined(CONFIG_CPU_EXYNOS4210) -static struct exynos_tmu_platform_data const exynos4210_default_tmu_data = { - .threshold = 80, - .trigger_levels[0] = 5, - .trigger_levels[1] = 20, - .trigger_levels[2] = 30, - .trigger_level0_en = 1, - .trigger_level1_en = 1, - .trigger_level2_en = 1, - .trigger_level3_en = 0, - .gain = 15, - .reference_voltage = 7, - .cal_type = TYPE_ONE_POINT_TRIMMING, - .freq_tab[0] = { - .freq_clip_max = 800 * 1000, - .temp_level = 85, - }, - .freq_tab[1] = { - .freq_clip_max = 200 * 1000, - .temp_level = 100, - }, - .freq_tab_count = 2, - .type = SOC_ARCH_EXYNOS4210, -}; -#define EXYNOS4210_TMU_DRV_DATA (&exynos4210_default_tmu_data) -#else -#define EXYNOS4210_TMU_DRV_DATA (NULL) -#endif - -#if defined(CONFIG_SOC_EXYNOS5250) || defined(CONFIG_SOC_EXYNOS4412) || \ - defined(CONFIG_SOC_EXYNOS4212) -static struct exynos_tmu_platform_data const exynos_default_tmu_data = { - .threshold_falling = 10, - .trigger_levels[0] = 85, - .trigger_levels[1] = 103, - .trigger_levels[2] = 110, - .trigger_level0_en = 1, - .trigger_level1_en = 1, - .trigger_level2_en = 1, - .trigger_level3_en = 0, - .gain = 8, - .reference_voltage = 16, - .noise_cancel_mode = 4, - .cal_type = TYPE_ONE_POINT_TRIMMING, - .efuse_value = 55, - .freq_tab[0] = { - .freq_clip_max = 800 * 1000, - .temp_level = 85, - }, - .freq_tab[1] = { - .freq_clip_max = 200 * 1000, - .temp_level = 103, - }, - .freq_tab_count = 2, - .type = SOC_ARCH_EXYNOS, -}; -#define EXYNOS_TMU_DRV_DATA (&exynos_default_tmu_data) -#else -#define EXYNOS_TMU_DRV_DATA (NULL) -#endif - -#ifdef CONFIG_OF -static const struct of_device_id exynos_tmu_match[] = { - { - .compatible = "samsung,exynos4210-tmu", - .data = (void *)EXYNOS4210_TMU_DRV_DATA, - }, - { - .compatible = "samsung,exynos4412-tmu", - .data = (void *)EXYNOS_TMU_DRV_DATA, - }, - { - .compatible = "samsung,exynos5250-tmu", - .data = (void *)EXYNOS_TMU_DRV_DATA, - }, - {}, -}; -MODULE_DEVICE_TABLE(of, exynos_tmu_match); -#endif - -static struct platform_device_id exynos_tmu_driver_ids[] = { - { - .name = "exynos4210-tmu", - .driver_data = (kernel_ulong_t)EXYNOS4210_TMU_DRV_DATA, - }, - { - .name = "exynos5250-tmu", - .driver_data = (kernel_ulong_t)EXYNOS_TMU_DRV_DATA, - }, - { }, -}; -MODULE_DEVICE_TABLE(platform, exynos_tmu_driver_ids); - -static inline struct exynos_tmu_platform_data *exynos_get_driver_data( - struct platform_device *pdev) -{ -#ifdef CONFIG_OF - if (pdev->dev.of_node) { - const struct of_device_id *match; - match = of_match_node(exynos_tmu_match, pdev->dev.of_node); - if (!match) - return NULL; - return (struct exynos_tmu_platform_data *) match->data; - } -#endif - return (struct exynos_tmu_platform_data *) - platform_get_device_id(pdev)->driver_data; -} - -static int exynos_tmu_probe(struct platform_device *pdev) -{ - struct exynos_tmu_data *data; - struct exynos_tmu_platform_data *pdata = pdev->dev.platform_data; - int ret, i; - - if (!pdata) - pdata = exynos_get_driver_data(pdev); - - if (!pdata) { - dev_err(&pdev->dev, "No platform init data supplied.\n"); - return -ENODEV; - } - data = devm_kzalloc(&pdev->dev, sizeof(struct exynos_tmu_data), - GFP_KERNEL); - if (!data) { - dev_err(&pdev->dev, "Failed to allocate driver structure\n"); - return -ENOMEM; - } - - data->irq = platform_get_irq(pdev, 0); - if (data->irq < 0) { - dev_err(&pdev->dev, "Failed to get platform irq\n"); - return data->irq; - } - - INIT_WORK(&data->irq_work, exynos_tmu_work); - - data->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - data->base = devm_ioremap_resource(&pdev->dev, data->mem); - if (IS_ERR(data->base)) - return PTR_ERR(data->base); - - ret = devm_request_irq(&pdev->dev, data->irq, exynos_tmu_irq, - IRQF_TRIGGER_RISING, "exynos-tmu", data); - if (ret) { - dev_err(&pdev->dev, "Failed to request irq: %d\n", data->irq); - return ret; - } - - data->clk = devm_clk_get(&pdev->dev, "tmu_apbif"); - if (IS_ERR(data->clk)) { - dev_err(&pdev->dev, "Failed to get clock\n"); - return PTR_ERR(data->clk); - } - - ret = clk_prepare(data->clk); - if (ret) - return ret; - - if (pdata->type == SOC_ARCH_EXYNOS || - pdata->type == SOC_ARCH_EXYNOS4210) - data->soc = pdata->type; - else { - ret = -EINVAL; - dev_err(&pdev->dev, "Platform not supported\n"); - goto err_clk; - } - - data->pdata = pdata; - platform_set_drvdata(pdev, data); - mutex_init(&data->lock); - - ret = exynos_tmu_initialize(pdev); - if (ret) { - dev_err(&pdev->dev, "Failed to initialize TMU\n"); - goto err_clk; - } - - exynos_tmu_control(pdev, true); - - /* Register the sensor with thermal management interface */ - (&exynos_sensor_conf)->private_data = data; - exynos_sensor_conf.trip_data.trip_count = pdata->trigger_level0_en + - pdata->trigger_level1_en + pdata->trigger_level2_en + - pdata->trigger_level3_en; - - for (i = 0; i < exynos_sensor_conf.trip_data.trip_count; i++) - exynos_sensor_conf.trip_data.trip_val[i] = - pdata->threshold + pdata->trigger_levels[i]; - - exynos_sensor_conf.trip_data.trigger_falling = pdata->threshold_falling; - - exynos_sensor_conf.cooling_data.freq_clip_count = - pdata->freq_tab_count; - for (i = 0; i < pdata->freq_tab_count; i++) { - exynos_sensor_conf.cooling_data.freq_data[i].freq_clip_max = - pdata->freq_tab[i].freq_clip_max; - exynos_sensor_conf.cooling_data.freq_data[i].temp_level = - pdata->freq_tab[i].temp_level; - } - - ret = exynos_register_thermal(&exynos_sensor_conf); - if (ret) { - dev_err(&pdev->dev, "Failed to register thermal interface\n"); - goto err_clk; - } - - return 0; -err_clk: - clk_unprepare(data->clk); - return ret; -} - -static int exynos_tmu_remove(struct platform_device *pdev) -{ - struct exynos_tmu_data *data = platform_get_drvdata(pdev); - - exynos_tmu_control(pdev, false); - - exynos_unregister_thermal(); - - clk_unprepare(data->clk); - - return 0; -} - -#ifdef CONFIG_PM_SLEEP -static int exynos_tmu_suspend(struct device *dev) -{ - exynos_tmu_control(to_platform_device(dev), false); - - return 0; -} - -static int exynos_tmu_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - - exynos_tmu_initialize(pdev); - exynos_tmu_control(pdev, true); - - return 0; -} - -static SIMPLE_DEV_PM_OPS(exynos_tmu_pm, - exynos_tmu_suspend, exynos_tmu_resume); -#define EXYNOS_TMU_PM (&exynos_tmu_pm) -#else -#define EXYNOS_TMU_PM NULL -#endif - -static struct platform_driver exynos_tmu_driver = { - .driver = { - .name = "exynos-tmu", - .owner = THIS_MODULE, - .pm = EXYNOS_TMU_PM, - .of_match_table = of_match_ptr(exynos_tmu_match), - }, - .probe = exynos_tmu_probe, - .remove = exynos_tmu_remove, - .id_table = exynos_tmu_driver_ids, -}; - -module_platform_driver(exynos_tmu_driver); - -MODULE_DESCRIPTION("EXYNOS TMU Driver"); -MODULE_AUTHOR("Donggeun Kim "); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:exynos-tmu"); -- cgit v1.2.3