linux-kernel - [PATCH v2 4/7] thermal: exynos: simplify regulator (de)initialization

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Date:   Mon, 11 Sep 2023 15:34:28 +0200
From:   Mateusz Majewski <m.majewski2@...sung.com>
To:     linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Mateusz Majewski <m.majewski2@...sung.com>,
        Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: [PATCH v2 4/7] thermal: exynos: simplify regulator
 (de)initialization

This does reduce the error granularity a bit, but the code
simplification seems to be worth it.

Signed-off-by: Mateusz Majewski <m.majewski2@...sung.com>
---
 drivers/thermal/samsung/exynos_tmu.c | 33 +++++++---------------------
 1 file changed, 8 insertions(+), 25 deletions(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index ba9414b419ef..8451deb65f43 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;
@@ -994,42 +992,34 @@ 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 {
-		if (PTR_ERR(data->regulator) == -EPROBE_DEFER)
+	ret = devm_regulator_get_enable_optional(&pdev->dev, "vtmu");
+	if (ret) {
+		if (ret == -EPROBE_DEFER)
 			return -EPROBE_DEFER;
-		dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
+		dev_info(&pdev->dev, "Failed to get regulator node (vtmu)\n");
 	}
 
 	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;
 		}
 	}
 
@@ -1099,10 +1089,6 @@ 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;
 }
 
@@ -1117,9 +1103,6 @@ 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;
 }
 
-- 
2.41.0