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| author | Amit Daniel Kachhap <amit.daniel@samsung.com> | 2013-06-24 16:20:47 +0530 |
|---|---|---|
| committer | Eduardo Valentin <eduardo.valentin@ti.com> | 2013-08-13 09:52:03 -0400 |
| commit | 498d22f616f6880531b6d75630a9cc0ecd1f7865 (patch) | |
| tree | 2ffd87f06d24719b179f530b5d9a1b8ab0928001 /drivers/thermal | |
| parent | 1928457ea6337043a06ca2acd9b4d01e75810a3f (diff) | |
| download | linux-498d22f616f6880531b6d75630a9cc0ecd1f7865.tar.bz2 | |
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: Jonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/samsung/exynos_tmu.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c index a6fc3798a6c4..ec01dfe4bef3 100644 --- a/drivers/thermal/samsung/exynos_tmu.c +++ b/drivers/thermal/samsung/exynos_tmu.c @@ -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; } |