linux-kernel - [PATCH 02/14] iio: adc: rzg2l_adc: Use devres helpers to request pre-deasserted reset controls

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Message-Id: <20241203111314.2420473-3-claudiu.beznea.uj@bp.renesas.com>
Date: Tue,  3 Dec 2024 13:13:02 +0200
From: Claudiu <claudiu.beznea@...on.dev>
To: prabhakar.mahadev-lad.rj@...renesas.com,
	jic23@...nel.org,
	lars@...afoo.de,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	geert+renesas@...der.be,
	magnus.damm@...il.com,
	mturquette@...libre.com,
	sboyd@...nel.org,
	p.zabel@...gutronix.de
Cc: claudiu.beznea@...on.dev,
	linux-iio@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH 02/14] iio: adc: rzg2l_adc: Use devres helpers to request pre-deasserted reset controls

From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Starting with commit d872bed85036 ("reset: Add devres helpers to request
pre-deasserted reset controls"), devres helpers are available to simplify
the process of requesting pre-deasserted reset controls. Update the
rzg2l_adc driver to utilize these helpers, reducing complexity in this
way.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
---
 drivers/iio/adc/rzg2l_adc.c | 37 ++-----------------------------------
 1 file changed, 2 insertions(+), 35 deletions(-)

diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c
index cd3a7e46ea53..7039949a7554 100644
--- a/drivers/iio/adc/rzg2l_adc.c
+++ b/drivers/iio/adc/rzg2l_adc.c
@@ -415,11 +415,6 @@ static void rzg2l_adc_pm_runtime_set_suspended(void *data)
 	pm_runtime_set_suspended(dev->parent);
 }
 
-static void rzg2l_adc_reset_assert(void *data)
-{
-	reset_control_assert(data);
-}
-
 static int rzg2l_adc_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -456,46 +451,18 @@ static int rzg2l_adc_probe(struct platform_device *pdev)
 		return PTR_ERR(adc->adclk);
 	}
 
-	adc->adrstn = devm_reset_control_get_exclusive(dev, "adrst-n");
+	adc->adrstn = devm_reset_control_get_exclusive_deasserted(dev, "adrst-n");
 	if (IS_ERR(adc->adrstn)) {
 		dev_err(dev, "failed to get adrstn\n");
 		return PTR_ERR(adc->adrstn);
 	}
 
-	adc->presetn = devm_reset_control_get_exclusive(dev, "presetn");
+	adc->presetn = devm_reset_control_get_exclusive_deasserted(dev, "presetn");
 	if (IS_ERR(adc->presetn)) {
 		dev_err(dev, "failed to get presetn\n");
 		return PTR_ERR(adc->presetn);
 	}
 
-	ret = reset_control_deassert(adc->adrstn);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to deassert adrstn pin, %d\n", ret);
-		return ret;
-	}
-
-	ret = devm_add_action_or_reset(&pdev->dev,
-				       rzg2l_adc_reset_assert, adc->adrstn);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to register adrstn assert devm action, %d\n",
-			ret);
-		return ret;
-	}
-
-	ret = reset_control_deassert(adc->presetn);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to deassert presetn pin, %d\n", ret);
-		return ret;
-	}
-
-	ret = devm_add_action_or_reset(&pdev->dev,
-				       rzg2l_adc_reset_assert, adc->presetn);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to register presetn assert devm action, %d\n",
-			ret);
-		return ret;
-	}
-
 	ret = rzg2l_adc_hw_init(adc);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to initialize ADC HW, %d\n", ret);
-- 
2.39.2