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Commit 498d22f6 authored by Amit Daniel Kachhap's avatar Amit Daniel Kachhap Committed by Eduardo Valentin
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thermal: exynos: Support for TMU regulator defined at device tree 



TMU probe function now checks for a device tree defined regulator.
For compatibility reasons it is allowed to probe driver even without
this regulator defined.

Acked-by: default avatarJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: default avatarEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: default avatarLukasz Majewski <l.majewski@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: default avatarEduardo Valentin <eduardo.valentin@ti.com>
parent 1928457e

drivers/thermal/samsung/exynos_tmu.c

+23 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/of_address.h>

#include <linux/of_irq.h>

#include <linux/platform_device.h>

#include <linux/regulator/consumer.h>



#include "exynos_thermal_common.h"

#include "exynos_tmu.h"
@@ -48,6 +49,7 @@ 
 * @clk: pointer to the clock structure.

 * @temp_error1: fused value of the first point trim.

 * @temp_error2: fused value of the second point trim.

 * @regulator: pointer to the TMU regulator structure.

 * @reg_conf: pointer to structure to register with core thermal.

 */

struct exynos_tmu_data {
@@ -61,6 +63,7 @@ struct exynos_tmu_data { 
	struct mutex lock;

	struct clk *clk;

	u8 temp_error1, temp_error2;

	struct regulator *regulator;

	struct thermal_sensor_conf *reg_conf;

};
@@ -527,10 +530,27 @@ static int exynos_map_dt_data(struct platform_device *pdev) 
	struct exynos_tmu_data *data = platform_get_drvdata(pdev);

	struct exynos_tmu_platform_data *pdata;

	struct resource res;

	int ret;



	if (!data)

		return -ENODEV;



	/*

	 * Try enabling the regulator if found

	 * TODO: Add regulator as an SOC feature, so that regulator enable

	 * is a compulsory call.

	 */

	data->regulator = devm_regulator_get(&pdev->dev, "vtmu");

	if (!IS_ERR(data->regulator)) {

		ret = regulator_enable(data->regulator);

		if (ret) {

			dev_err(&pdev->dev, "failed to enable vtmu\n");

			return ret;

		}

	} else {

		dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");

	}



	data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl");

	if (data->id < 0)

		data->id = 0;
@@ -698,6 +718,9 @@ static int exynos_tmu_remove(struct platform_device *pdev) 


	clk_unprepare(data->clk);



	if (!IS_ERR(data->regulator))

		regulator_disable(data->regulator);



	return 0;

}