linux-kernel - [PATCH v7 08/11] drm/mediatek: dp: Move PHY registration to new function

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Message-ID: <20230725073234.55892-9-angelogioacchino.delregno@collabora.com>
Date:   Tue, 25 Jul 2023 09:32:31 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     chunkuang.hu@...nel.org
Cc:     p.zabel@...gutronix.de, airlied@...il.com, daniel@...ll.ch,
        matthias.bgg@...il.com, angelogioacchino.delregno@...labora.com,
        dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kernel@...labora.com,
        wenst@...omium.org, nfraprado@...labora.com,
        ehristev@...labora.com, Alexandre Mergnat <amergnat@...libre.com>
Subject: [PATCH v7 08/11] drm/mediatek: dp: Move PHY registration to new function

In preparation for adding support for eDP, move the PHY registration
code to a new mtk_dp_register_phy() function for better readability.

This commit brings no functional changes.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Tested-by: Chen-Yu Tsai <wenst@...omium.org>
Reviewed-by: Alexandre Mergnat <amergnat@...libre.com>
---
 drivers/gpu/drm/mediatek/mtk_dp.c | 43 +++++++++++++++++++------------
 1 file changed, 26 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
index c1d1a882f1db..1b4219e6a00b 100644
--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -2478,6 +2478,29 @@ static int mtk_dp_register_audio_driver(struct device *dev)
 	return PTR_ERR_OR_ZERO(mtk_dp->audio_pdev);
 }
 
+static int mtk_dp_register_phy(struct mtk_dp *mtk_dp)
+{
+	struct device *dev = mtk_dp->dev;
+
+	mtk_dp->phy_dev = platform_device_register_data(dev, "mediatek-dp-phy",
+							PLATFORM_DEVID_AUTO,
+							&mtk_dp->regs,
+							sizeof(struct regmap *));
+	if (IS_ERR(mtk_dp->phy_dev))
+		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy_dev),
+				     "Failed to create device mediatek-dp-phy\n");
+
+	mtk_dp_get_calibration_data(mtk_dp);
+
+	mtk_dp->phy = devm_phy_get(&mtk_dp->phy_dev->dev, "dp");
+	if (IS_ERR(mtk_dp->phy)) {
+		platform_device_unregister(mtk_dp->phy_dev);
+		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy), "Failed to get phy\n");
+	}
+
+	return 0;
+}
+
 static int mtk_dp_probe(struct platform_device *pdev)
 {
 	struct mtk_dp *mtk_dp;
@@ -2536,23 +2559,9 @@ static int mtk_dp_probe(struct platform_device *pdev)
 		}
 	}
 
-	mtk_dp->phy_dev = platform_device_register_data(dev, "mediatek-dp-phy",
-							PLATFORM_DEVID_AUTO,
-							&mtk_dp->regs,
-							sizeof(struct regmap *));
-	if (IS_ERR(mtk_dp->phy_dev))
-		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy_dev),
-				     "Failed to create device mediatek-dp-phy\n");
-
-	mtk_dp_get_calibration_data(mtk_dp);
-
-	mtk_dp->phy = devm_phy_get(&mtk_dp->phy_dev->dev, "dp");
-
-	if (IS_ERR(mtk_dp->phy)) {
-		platform_device_unregister(mtk_dp->phy_dev);
-		return dev_err_probe(dev, PTR_ERR(mtk_dp->phy),
-				     "Failed to get phy\n");
-	}
+	ret = mtk_dp_register_phy(mtk_dp);
+	if (ret)
+		return ret;
 
 	mtk_dp->bridge.funcs = &mtk_dp_bridge_funcs;
 	mtk_dp->bridge.of_node = dev->of_node;
-- 
2.41.0