linux-kernel - [PATCH 1/6] ASoC: codecs: wcd937x: Simplify with devm_regulator_bulk_get

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Message-Id: <20250526-b4-asoc-wcd9395-vdd-px-v1-1-64d3cb60313b@linaro.org>
Date: Mon, 26 May 2025 12:49:50 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
 Srinivas Kandagatla <srini@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 1/6] ASoC: codecs: wcd937x: Simplify with
 devm_regulator_bulk_get_enable()

Drop separate regulator get and enable in probe() path with
devm_regulator_bulk_get_enable(), which simplifies cleanup paths and
device remove().

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 sound/soc/codecs/wcd937x.c | 31 +++++++++----------------------
 sound/soc/codecs/wcd937x.h |  1 -
 2 files changed, 9 insertions(+), 23 deletions(-)

diff --git a/sound/soc/codecs/wcd937x.c b/sound/soc/codecs/wcd937x.c
index b9df58b86ce953427e01ffb8c7eb7e52f9c2392a..92765a8693fbf87e2ba53fef75657ffb1b5fdb8f 100644
--- a/sound/soc/codecs/wcd937x.c
+++ b/sound/soc/codecs/wcd937x.c
@@ -90,7 +90,6 @@ struct wcd937x_priv {
 	struct irq_domain *virq;
 	struct regmap_irq_chip *wcd_regmap_irq_chip;
 	struct regmap_irq_chip_data *irq_chip;
-	struct regulator_bulk_data supplies[WCD937X_MAX_BULK_SUPPLY];
 	struct snd_soc_jack *jack;
 	unsigned long status_mask;
 	s32 micb_ref[WCD937X_MAX_MICBIAS];
@@ -113,6 +112,10 @@ struct wcd937x_priv {
 	atomic_t ana_clk_count;
 };
 
+static const char * const wcd937x_supplies[] = {
+	"vdd-rxtx", "vdd-px", "vdd-mic-bias", "vdd-buck",
+};
+
 static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(ear_pa_gain, 600, -1800);
 static const DECLARE_TLV_DB_SCALE(line_gain, 0, 7, 1);
 static const DECLARE_TLV_DB_SCALE(analog_gain, 0, 25, 1);
@@ -2934,18 +2937,10 @@ static int wcd937x_probe(struct platform_device *pdev)
 	cfg = &wcd937x->mbhc_cfg;
 	cfg->swap_gnd_mic = wcd937x_swap_gnd_mic;
 
-	wcd937x->supplies[0].supply = "vdd-rxtx";
-	wcd937x->supplies[1].supply = "vdd-px";
-	wcd937x->supplies[2].supply = "vdd-mic-bias";
-	wcd937x->supplies[3].supply = "vdd-buck";
-
-	ret = devm_regulator_bulk_get(dev, WCD937X_MAX_BULK_SUPPLY, wcd937x->supplies);
+	ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(wcd937x_supplies),
+					     wcd937x_supplies);
 	if (ret)
-		return dev_err_probe(dev, ret, "Failed to get supplies\n");
-
-	ret = regulator_bulk_enable(WCD937X_MAX_BULK_SUPPLY, wcd937x->supplies);
-	if (ret)
-		return dev_err_probe(dev, ret, "Failed to enable supplies\n");
+		return dev_err_probe(dev, ret, "Failed to get and enable supplies\n");
 
 	wcd937x_dt_parse_micbias_info(dev, wcd937x);
 
@@ -2962,13 +2957,13 @@ static int wcd937x_probe(struct platform_device *pdev)
 
 	ret = wcd937x_add_slave_components(wcd937x, dev, &match);
 	if (ret)
-		goto err_disable_regulators;
+		return ret;
 
 	wcd937x_reset(wcd937x);
 
 	ret = component_master_add_with_match(dev, &wcd937x_comp_ops, match);
 	if (ret)
-		goto err_disable_regulators;
+		return ret;
 
 	pm_runtime_set_autosuspend_delay(dev, 1000);
 	pm_runtime_use_autosuspend(dev);
@@ -2978,25 +2973,17 @@ static int wcd937x_probe(struct platform_device *pdev)
 	pm_runtime_idle(dev);
 
 	return 0;
-
-err_disable_regulators:
-	regulator_bulk_disable(WCD937X_MAX_BULK_SUPPLY, wcd937x->supplies);
-
-	return ret;
 }
 
 static void wcd937x_remove(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct wcd937x_priv *wcd937x = dev_get_drvdata(dev);
 
 	component_master_del(&pdev->dev, &wcd937x_comp_ops);
 
 	pm_runtime_disable(dev);
 	pm_runtime_set_suspended(dev);
 	pm_runtime_dont_use_autosuspend(dev);
-
-	regulator_bulk_disable(WCD937X_MAX_BULK_SUPPLY, wcd937x->supplies);
 }
 
 #if defined(CONFIG_OF)
diff --git a/sound/soc/codecs/wcd937x.h b/sound/soc/codecs/wcd937x.h
index 4ef57c496c37c555c8684d65249c53f6a8b645a1..3ab21bb5846e2c85520d67e7dc248d4e7715dba5 100644
--- a/sound/soc/codecs/wcd937x.h
+++ b/sound/soc/codecs/wcd937x.h
@@ -487,7 +487,6 @@
 #define WCD937X_MAX_REGISTER			(WCD937X_DIGITAL_EFUSE_REG_31)
 
 #define WCD937X_MAX_MICBIAS			3
-#define WCD937X_MAX_BULK_SUPPLY			4
 #define WCD937X_MAX_SWR_CH_IDS			15
 #define WCD937X_SWRM_CH_MASK(ch_idx)		BIT(ch_idx - 1)
 

-- 
2.45.2