diff mbox series

[v3,5/8] thermal: exynos: simplify regulator (de)initialization

Message ID 20231003111638.241542-6-m.majewski2@samsung.com
State Superseded
Headers show
Series Improve Exynos thermal driver | expand

Commit Message

Mateusz Majewski Oct. 3, 2023, 11:16 a.m. UTC
We rewrite the initialization to enable the regulator as part of devm,
which allows us to not handle the struct instance manually. We also
remove the error message in case the regulator is unavailable, as this
is expected behaviour.

Signed-off-by: Mateusz Majewski <m.majewski2@samsung.com>
---
v2 -> v3: fixed error handling of devm_regulator_get_optional to handle
  the case in which the regulator is available, but enabling it fails.
  Also removed the error message, split into two commits and reworded
  the commit message.

 drivers/thermal/samsung/exynos_tmu.c | 49 +++++++++-------------------
 1 file changed, 15 insertions(+), 34 deletions(-)

Comments

Krzysztof Kozlowski Oct. 6, 2023, 1:15 p.m. UTC | #1
On 03/10/2023 13:16, Mateusz Majewski wrote:
> We rewrite the initialization to enable the regulator as part of devm,
> which allows us to not handle the struct instance manually. We also
> remove the error message in case the regulator is unavailable, as this
> is expected behaviour.
> 
> Signed-off-by: Mateusz Majewski <m.majewski2@samsung.com>
> ---
> v2 -> v3: fixed error handling of devm_regulator_get_optional to handle
>   the case in which the regulator is available, but enabling it fails.
>   Also removed the error message, split into two commits and reworded
>   the commit message.
> 

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 6070b03cff9d..a0a1f7e1e63f 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -157,7 +157,6 @@  enum soc_type {
  * @reference_voltage: reference voltage of amplifier
  *	in the positive-TC generator block
  *	0 < reference_voltage <= 31
- * @regulator: pointer to the TMU regulator structure.
  * @tzd: pointer to thermal_zone_device structure
  * @ntrip: number of supported trip points.
  * @enabled: current status of TMU device
@@ -183,7 +182,6 @@  struct exynos_tmu_data {
 	u16 temp_error1, temp_error2;
 	u8 gain;
 	u8 reference_voltage;
-	struct regulator *regulator;
 	struct thermal_zone_device *tzd;
 	unsigned int ntrip;
 	bool enabled;
@@ -994,50 +992,40 @@  static int exynos_tmu_probe(struct platform_device *pdev)
 	 * TODO: Add regulator as an SOC feature, so that regulator enable
 	 * is a compulsory call.
 	 */
-	data->regulator = devm_regulator_get_optional(&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 {
-		ret = PTR_ERR(data->regulator);
-		switch (ret) {
-		case -ENODEV:
-			break;
-		case -EPROBE_DEFER:
-			return -EPROBE_DEFER;
-		default:
-			dev_err(&pdev->dev, "Failed to get regulator: %d\n",
-				ret);
-			return ret;
-		}
+	ret = devm_regulator_get_enable_optional(&pdev->dev, "vtmu");
+	switch (ret) {
+	case 0:
+	case -ENODEV:
+		break;
+	case -EPROBE_DEFER:
+		return -EPROBE_DEFER;
+	default:
+		dev_err(&pdev->dev, "Failed to get enabled regulator: %d\n",
+			ret);
+		return ret;
 	}
 
 	ret = exynos_map_dt_data(pdev);
 	if (ret)
-		goto err_sensor;
+		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");
-		ret = PTR_ERR(data->clk);
-		goto err_sensor;
+		return PTR_ERR(data->clk);
 	}
 
 	data->clk_sec = devm_clk_get(&pdev->dev, "tmu_triminfo_apbif");
 	if (IS_ERR(data->clk_sec)) {
 		if (data->soc == SOC_ARCH_EXYNOS5420_TRIMINFO) {
 			dev_err(&pdev->dev, "Failed to get triminfo clock\n");
-			ret = PTR_ERR(data->clk_sec);
-			goto err_sensor;
+			return PTR_ERR(data->clk_sec);
 		}
 	} else {
 		ret = clk_prepare(data->clk_sec);
 		if (ret) {
 			dev_err(&pdev->dev, "Failed to get clock\n");
-			goto err_sensor;
+			return ret;
 		}
 	}
 
@@ -1107,10 +1095,6 @@  static int exynos_tmu_probe(struct platform_device *pdev)
 err_clk_sec:
 	if (!IS_ERR(data->clk_sec))
 		clk_unprepare(data->clk_sec);
-err_sensor:
-	if (!IS_ERR(data->regulator))
-		regulator_disable(data->regulator);
-
 	return ret;
 }
 
@@ -1125,9 +1109,6 @@  static int exynos_tmu_remove(struct platform_device *pdev)
 	if (!IS_ERR(data->clk_sec))
 		clk_unprepare(data->clk_sec);
 
-	if (!IS_ERR(data->regulator))
-		regulator_disable(data->regulator);
-
 	return 0;
 }