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From: Marco Felsch <m.felsch@pengutronix.de>
To: p.zabel@pengutronix.de, airlied@linux.ie, daniel@ffwll.ch,
	shawnguo@kernel.org, stefan@agner.ch, rmk+kernel@armlinux.org.uk
Cc: kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org
Subject: [PATCH 07/17] drm/imx: tve: add regulator_disable devm_action
Date: Thu, 27 Feb 2020 17:21:15 +0100	[thread overview]
Message-ID: <20200227162125.10450-8-m.felsch@pengutronix.de> (raw)
In-Reply-To: <20200227162125.10450-1-m.felsch@pengutronix.de>

To avoid a dedicated unbind() callback we can use the new devm_action
mechanism. This allows us to drop the error check because the callback
will only be executed if the regulator was registered.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
 drivers/gpu/drm/imx/imx-tve.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index e113014a1a79..3340ba6e0222 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -485,6 +485,13 @@ static int imx_tve_register(struct drm_device *drm, struct imx_tve *tve)
 	return 0;
 }
 
+static void imx_tve_disable_regulator(void *data)
+{
+	struct imx_tve *tve = data;
+
+	regulator_disable(tve->dac_reg);
+}
+
 static bool imx_tve_readable_reg(struct device *dev, unsigned int reg)
 {
 	return (reg % 4 == 0) && (reg <= 0xdc);
@@ -609,6 +616,9 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
 		ret = regulator_enable(tve->dac_reg);
 		if (ret)
 			return ret;
+		ret = devm_add_action_or_reset(dev, imx_tve_disable_regulator, tve);
+		if (ret)
+			return ret;
 	}
 
 	tve->clk = devm_clk_get(dev, "tve");
@@ -655,18 +665,8 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
 	return 0;
 }
 
-static void imx_tve_unbind(struct device *dev, struct device *master,
-	void *data)
-{
-	struct imx_tve *tve = dev_get_drvdata(dev);
-
-	if (!IS_ERR(tve->dac_reg))
-		regulator_disable(tve->dac_reg);
-}
-
 static const struct component_ops imx_tve_ops = {
 	.bind	= imx_tve_bind,
-	.unbind	= imx_tve_unbind,
 };
 
 static int imx_tve_probe(struct platform_device *pdev)
-- 
2.20.1


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  parent reply	other threads:[~2020-02-27 16:25 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-27 16:21 [PATCH 00/17] DRM: imx spring-cleaning Marco Felsch
2020-02-27 16:21 ` [PATCH 01/17] drm/imx: drop useless best_encoder callback Marco Felsch
2020-02-27 16:21 ` [PATCH 02/17] drm/imx: parallel-display: fix edid memory leak Marco Felsch
2020-02-27 16:21 ` [PATCH 03/17] drm/imx: parallel-display: move panel/bridge detection to fail early Marco Felsch
2020-02-27 16:21 ` [PATCH 04/17] drm/imx: parallel-display: detach panel within drm_encoder destroy Marco Felsch
2020-02-27 16:21 ` [PATCH 05/17] drm/imx: parallel-display: split encoder and decoder states Marco Felsch
2020-02-27 16:21 ` [PATCH 06/17] imx/drm: parallel-display: split attach function Marco Felsch
2020-02-27 16:21 ` Marco Felsch [this message]
2020-02-27 16:21 ` [PATCH 08/17] drm/imx: tve: split global state container Marco Felsch
2020-02-27 16:21 ` [PATCH 09/17] drm/imx: imx-ldb: remove useless enum Marco Felsch
2020-02-27 16:21 ` [PATCH 10/17] drm/imx: imx-ldb: fix edid memory leak Marco Felsch
2020-02-27 16:21 ` [PATCH 11/17] drm/imx: imx-ldb: release ldb-channel resources within encoder destroy Marco Felsch
2020-02-27 16:21 ` [PATCH 12/17] drm/imx: remove imx_drm_encoder_destroy helper Marco Felsch
2020-02-27 16:21 ` [PATCH 13/17] drm/imx: imx-ldb: split imx_ldb devres allocation context Marco Felsch
2020-02-27 16:21 ` [PATCH 14/17] drm/imx: imx-ldb: add ldb_is_dual helper Marco Felsch
2020-02-27 16:21 ` [PATCH 15/17] drm/imx: imx-ldb: split encoder and decoder states Marco Felsch
2020-02-27 16:21 ` [PATCH 16/17] drm/imx: imx-ldb: refactor imx_ldb_bind Marco Felsch
2020-02-27 16:21 ` [PATCH 17/17] drm/imx: fix drm_mode_config_cleanup race condition Marco Felsch
2020-02-27 17:29   ` Daniel Vetter
2020-02-27 17:44     ` Lucas Stach
2020-02-27 18:14       ` Daniel Vetter
2020-02-27 18:23         ` Marco Felsch
2020-03-02 18:07         ` Philipp Zabel
2020-03-02 21:32           ` Daniel Vetter

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