thermal: exynos: Add support to handle many instances of TMU (cebe7373) · Commits · 戴 / test

drivers/thermal/samsung/exynos_thermal_common.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -85,6 +85,7 @@ struct thermal_sensor_conf {
		struct thermal_cooling_conf cooling_data;
		void *driver_data;
		void *pzone_data;
		struct device *dev;
		};

		/Functions used exynos based thermal sensor driver/

drivers/thermal/samsung/exynos_tmu.c

+108 −50

Original line number	Diff line number	Diff line
		@@ -26,15 +26,32 @@
		#include <linux/interrupt.h>
		#include <linux/module.h>
		#include <linux/of.h>
		#include <linux/of_address.h>
		#include <linux/of_irq.h>
		#include <linux/platform_device.h>

		#include "exynos_thermal_common.h"
		#include "exynos_tmu.h"
		#include "exynos_tmu_data.h"

		/**
		* struct exynos_tmu_data : A structure to hold the private data of the TMU
		driver
		* @id: identifier of the one instance of the TMU controller.
		* @pdata: pointer to the tmu platform/configuration data
		* @base: base address of the single instance of the TMU controller.
		* @irq: irq number of the TMU controller.
		* @soc: id of the SOC type.
		* @irq_work: pointer to the irq work structure.
		* @lock: lock to implement synchronization.
		* @clk: pointer to the clock structure.
		* @temp_error1: fused value of the first point trim.
		* @temp_error2: fused value of the second point trim.
		* @reg_conf: pointer to structure to register with core thermal.
		*/
		struct exynos_tmu_data {
		int id;
		struct exynos_tmu_platform_data *pdata;
		struct resource *mem;
		void __iomem *base;
		int irq;
		enum soc_type soc;
		@@ -42,6 +59,7 @@ struct exynos_tmu_data {
		struct mutex lock;
		struct clk *clk;
		u8 temp_error1, temp_error2;
		struct thermal_sensor_conf *reg_conf;
		};

		/*
		@@ -345,12 +363,6 @@ static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp)
		{ return -EINVAL; }
		#endif/CONFIG_THERMAL_EMULATION/

		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,
		};

		static void exynos_tmu_work(struct work_struct *work)
		{
		struct exynos_tmu_data *data = container_of(work,
		@@ -359,7 +371,7 @@ static void exynos_tmu_work(struct work_struct *work)
		const struct exynos_tmu_registers *reg = pdata->registers;
		unsigned int val_irq;

		exynos_report_trigger(&exynos_sensor_conf);
		exynos_report_trigger(data->reg_conf);
		mutex_lock(&data->lock);
		clk_enable(data->clk);

		@@ -404,33 +416,73 @@ MODULE_DEVICE_TABLE(of, exynos_tmu_match);
		#endif

		static inline struct exynos_tmu_platform_data *exynos_get_driver_data(
		struct platform_device *pdev)
		struct platform_device *pdev, int id)
		{
		#ifdef CONFIG_OF
		struct exynos_tmu_init_data *data_table;
		struct exynos_tmu_platform_data *tmu_data;
		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;
		data_table = (struct exynos_tmu_init_data *) match->data;
		if (!data_table \|\| id >= data_table->tmu_count)
		return NULL;
		tmu_data = data_table->tmu_data;
		return (struct exynos_tmu_platform_data *) (tmu_data + id);
		}
		#endif
		return NULL;
		}

		static int exynos_tmu_probe(struct platform_device *pdev)
		static int exynos_map_dt_data(struct platform_device *pdev)
		{
		struct exynos_tmu_data *data;
		struct exynos_tmu_platform_data *pdata = pdev->dev.platform_data;
		int ret, i;
		struct exynos_tmu_data *data = platform_get_drvdata(pdev);
		struct exynos_tmu_platform_data *pdata;
		struct resource res;

		if (!data)
		return -ENODEV;

		if (!pdata)
		pdata = exynos_get_driver_data(pdev);
		data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl");
		if (data->id < 0)
		data->id = 0;

		data->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
		if (data->irq <= 0) {
		dev_err(&pdev->dev, "failed to get IRQ\n");
		return -ENODEV;
		}

		if (of_address_to_resource(pdev->dev.of_node, 0, &res)) {
		dev_err(&pdev->dev, "failed to get Resource 0\n");
		return -ENODEV;
		}

		data->base = devm_ioremap(&pdev->dev, res.start, resource_size(&res));
		if (!data->base) {
		dev_err(&pdev->dev, "Failed to ioremap memory\n");
		return -EADDRNOTAVAIL;
		}

		pdata = exynos_get_driver_data(pdev, data->id);
		if (!pdata) {
		dev_err(&pdev->dev, "No platform init data supplied.\n");
		return -ENODEV;
		}
		data->pdata = pdata;

		return 0;
		}

		static int exynos_tmu_probe(struct platform_device *pdev)
		{
		struct exynos_tmu_data *data;
		struct exynos_tmu_platform_data *pdata;
		struct thermal_sensor_conf *sensor_conf;
		int ret, i;

		data = devm_kzalloc(&pdev->dev, sizeof(struct exynos_tmu_data),
		GFP_KERNEL);
		if (!data) {
		@@ -438,25 +490,16 @@ static int exynos_tmu_probe(struct platform_device *pdev)
		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;
		}
		platform_set_drvdata(pdev, data);
		mutex_init(&data->lock);

		INIT_WORK(&data->irq_work, exynos_tmu_work);
		ret = exynos_map_dt_data(pdev);
		if (ret)
		return ret;

		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);
		pdata = data->pdata;

		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;
		}
		INIT_WORK(&data->irq_work, exynos_tmu_work);

		data->clk = devm_clk_get(&pdev->dev, "tmu_apbif");
		if (IS_ERR(data->clk)) {
		@@ -477,10 +520,6 @@ static int exynos_tmu_probe(struct platform_device *pdev)
		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");
		@@ -489,35 +528,54 @@ static int exynos_tmu_probe(struct platform_device *pdev)

		exynos_tmu_control(pdev, true);

		/* Register the sensor with thermal management interface */
		(&exynos_sensor_conf)->driver_data = data;
		exynos_sensor_conf.trip_data.trip_count = pdata->trigger_enable[0] +
		/* Allocate a structure to register with the exynos core thermal */
		sensor_conf = devm_kzalloc(&pdev->dev,
		sizeof(struct thermal_sensor_conf), GFP_KERNEL);
		if (!sensor_conf) {
		dev_err(&pdev->dev, "Failed to allocate registration struct\n");
		ret = -ENOMEM;
		goto err_clk;
		}
		sprintf(sensor_conf->name, "therm_zone%d", data->id);
		sensor_conf->read_temperature = (int ()(void ))exynos_tmu_read;
		sensor_conf->write_emul_temp =
		(int ()(void , unsigned long))exynos_tmu_set_emulation;
		sensor_conf->driver_data = data;
		sensor_conf->trip_data.trip_count = pdata->trigger_enable[0] +
		pdata->trigger_enable[1] + pdata->trigger_enable[2]+
		pdata->trigger_enable[3];

		for (i = 0; i < exynos_sensor_conf.trip_data.trip_count; i++) {
		exynos_sensor_conf.trip_data.trip_val[i] =
		for (i = 0; i < sensor_conf->trip_data.trip_count; i++) {
		sensor_conf->trip_data.trip_val[i] =
		pdata->threshold + pdata->trigger_levels[i];
		exynos_sensor_conf.trip_data.trip_type[i] =
		sensor_conf->trip_data.trip_type[i] =
		pdata->trigger_type[i];
		}

		exynos_sensor_conf.trip_data.trigger_falling = pdata->threshold_falling;
		sensor_conf->trip_data.trigger_falling = pdata->threshold_falling;

		exynos_sensor_conf.cooling_data.freq_clip_count =
		pdata->freq_tab_count;
		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 =
		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 =
		sensor_conf->cooling_data.freq_data[i].temp_level =
		pdata->freq_tab[i].temp_level;
		}

		ret = exynos_register_thermal(&exynos_sensor_conf);
		sensor_conf->dev = &pdev->dev;
		/* Register the sensor with thermal management interface */
		ret = exynos_register_thermal(sensor_conf);
		if (ret) {
		dev_err(&pdev->dev, "Failed to register thermal interface\n");
		goto err_clk;
		}
		data->reg_conf = sensor_conf;

		ret = devm_request_irq(&pdev->dev, data->irq, exynos_tmu_irq,
		IRQF_TRIGGER_RISING \| IRQF_SHARED, dev_name(&pdev->dev), data);
		if (ret) {
		dev_err(&pdev->dev, "Failed to request irq: %d\n", data->irq);
		goto err_clk;
		}

		return 0;
		err_clk:
		@@ -531,7 +589,7 @@ static int exynos_tmu_remove(struct platform_device *pdev)

		exynos_tmu_control(pdev, false);

		exynos_unregister_thermal(&exynos_sensor_conf);
		exynos_unregister_thermal(data->reg_conf);

		clk_unprepare(data->clk);

drivers/thermal/samsung/exynos_tmu.h

+13 −0

Original line number	Diff line number	Diff line
		@@ -250,4 +250,17 @@ struct exynos_tmu_platform_data {
		unsigned int freq_tab_count;
		const struct exynos_tmu_registers *registers;
		};

		/**
		* struct exynos_tmu_init_data
		* @tmu_count: number of TMU instances.
		* @tmu_data: platform data of all TMU instances.
		* This structure is required to store data for multi-instance exynos tmu
		* driver.
		*/
		struct exynos_tmu_init_data {
		int tmu_count;
		struct exynos_tmu_platform_data tmu_data[];
		};

		#endif /* _EXYNOS_TMU_H */

drivers/thermal/samsung/exynos_tmu_data.c

+79 −66

Original line number	Diff line number	Diff line
		@@ -48,7 +48,10 @@ static const struct exynos_tmu_registers exynos4210_tmu_registers = {
		.tmu_intstat = EXYNOS_TMU_REG_INTSTAT,
		.tmu_intclear = EXYNOS_TMU_REG_INTCLEAR,
		};
		struct exynos_tmu_platform_data const exynos4210_default_tmu_data = {

		struct exynos_tmu_init_data const exynos4210_default_tmu_data = {
		.tmu_data = {
		{
		.threshold = 80,
		.trigger_levels[0] = 5,
		.trigger_levels[1] = 20,
		@@ -80,6 +83,9 @@ struct exynos_tmu_platform_data const exynos4210_default_tmu_data = {
		.freq_tab_count = 2,
		.type = SOC_ARCH_EXYNOS4210,
		.registers = &exynos4210_tmu_registers,
		},
		},
		.tmu_count = 1,
		};
		#endif

		@@ -120,41 +126,48 @@ static const struct exynos_tmu_registers exynos5250_tmu_registers = {
		.emul_time_shift = EXYNOS_EMUL_TIME_SHIFT,
		.emul_time_mask = EXYNOS_EMUL_TIME_MASK,
		};
		struct exynos_tmu_platform_data const exynos5250_default_tmu_data = {
		.threshold_falling = 10,
		.trigger_levels[0] = 85,
		.trigger_levels[1] = 103,
		.trigger_levels[2] = 110,
		.trigger_levels[3] = 120,
		.trigger_enable[0] = true,
		.trigger_enable[1] = true,
		.trigger_enable[2] = true,
		.trigger_enable[3] = false,
		.trigger_type[0] = THROTTLE_ACTIVE,
		.trigger_type[1] = THROTTLE_ACTIVE,
		.trigger_type[2] = SW_TRIP,
		.trigger_type[3] = HW_TRIP,
		.max_trigger_level = 4,
		.gain = 8,
		.reference_voltage = 16,
		.noise_cancel_mode = 4,
		.cal_type = TYPE_ONE_POINT_TRIMMING,
		.efuse_value = 55,
		.min_efuse_value = 40,
		.max_efuse_value = 100,
		.first_point_trim = 25,
		.second_point_trim = 85,
		.default_temp_offset = 50,
		.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 EXYNOS5250_TMU_DATA \
		.threshold_falling = 10, \
		.trigger_levels[0] = 85, \
		.trigger_levels[1] = 103, \
		.trigger_levels[2] = 110, \
		.trigger_levels[3] = 120, \
		.trigger_enable[0] = true, \
		.trigger_enable[1] = true, \
		.trigger_enable[2] = true, \
		.trigger_enable[3] = false, \
		.trigger_type[0] = THROTTLE_ACTIVE, \
		.trigger_type[1] = THROTTLE_ACTIVE, \
		.trigger_type[2] = SW_TRIP, \
		.trigger_type[3] = HW_TRIP, \
		.max_trigger_level = 4, \
		.gain = 8, \
		.reference_voltage = 16, \
		.noise_cancel_mode = 4, \
		.cal_type = TYPE_ONE_POINT_TRIMMING, \
		.efuse_value = 55, \
		.min_efuse_value = 40, \
		.max_efuse_value = 100, \
		.first_point_trim = 25, \
		.second_point_trim = 85, \
		.default_temp_offset = 50, \
		.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, \
		.registers = &exynos5250_tmu_registers,

		struct exynos_tmu_init_data const exynos5250_default_tmu_data = {
		.tmu_data = {
		{ EXYNOS5250_TMU_DATA },
		},
		.tmu_count = 1,
		};
		#endif

drivers/thermal/samsung/exynos_tmu_data.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -94,14 +94,14 @@
		#define EXYNOS_MAX_TRIGGER_PER_REG 4

		#if defined(CONFIG_CPU_EXYNOS4210)
		extern struct exynos_tmu_platform_data const exynos4210_default_tmu_data;
		extern struct exynos_tmu_init_data const exynos4210_default_tmu_data;
		#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))
		extern struct exynos_tmu_platform_data const exynos5250_default_tmu_data;
		extern struct exynos_tmu_init_data const exynos5250_default_tmu_data;
		#define EXYNOS5250_TMU_DRV_DATA (&exynos5250_default_tmu_data)
		#else
		#define EXYNOS5250_TMU_DRV_DATA (NULL)

Admin message