pinctrl: mediatek: paris: Unify probe function by using OF match data

All of the SoCs using Paris pinctrl are defining a custom probe
function that is simply calling mtk_paris_pinctrl_probe() passing
a pointer to the SoC specific mtk_pin_soc structure and nothing else.

Simplify the probe mechanism across all pinctrl drivers that are
using pinctrl-paris by passing the specific mtk_pin_soc as match
data and using function mtk_paris_pinctrl_probe as a common probe
function for all of them.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220222111144.20796-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/pinctrl-mt6765.c

@@ -1082,21 +1082,16 @@ static const struct mtk_pin_soc mt6765_data = {
 };
 
 static const struct of_device_id mt6765_pinctrl_of_match[] = {
-	{ .compatible = "mediatek,mt6765-pinctrl", },
+	{ .compatible = "mediatek,mt6765-pinctrl", .data = &mt6765_data },
 	{ }
 };
 
-static int mt6765_pinctrl_probe(struct platform_device *pdev)
-{
-	return mtk_paris_pinctrl_probe(pdev, &mt6765_data);
-}
-
 static struct platform_driver mt6765_pinctrl_driver = {
 	.driver = {
 		.name = "mt6765-pinctrl",
 		.of_match_table = mt6765_pinctrl_of_match,
 	},
-	.probe = mt6765_pinctrl_probe,
+	.probe = mtk_paris_pinctrl_probe,
 };
 
 static int __init mt6765_pinctrl_init(void)

drivers/pinctrl/mediatek/pinctrl-mt6779.c

@@ -758,21 +758,16 @@ static const struct mtk_pin_soc mt6779_data = {
 };
 
 static const struct of_device_id mt6779_pinctrl_of_match[] = {
-	{ .compatible = "mediatek,mt6779-pinctrl", },
+	{ .compatible = "mediatek,mt6779-pinctrl", .data = &mt6779_data },
 	{ }
 };
 
-static int mt6779_pinctrl_probe(struct platform_device *pdev)
-{
-	return mtk_paris_pinctrl_probe(pdev, &mt6779_data);
-}
-
 static struct platform_driver mt6779_pinctrl_driver = {
 	.driver = {
 		.name = "mt6779-pinctrl",
 		.of_match_table = mt6779_pinctrl_of_match,
 	},
-	.probe = mt6779_pinctrl_probe,
+	.probe = mtk_paris_pinctrl_probe,
 };
 
 static int __init mt6779_pinctrl_init(void)

drivers/pinctrl/mediatek/pinctrl-mt6797.c

@@ -58,21 +58,16 @@ static const struct mtk_pin_soc mt6797_data = {
 };
 
 static const struct of_device_id mt6797_pinctrl_of_match[] = {
-	{ .compatible = "mediatek,mt6797-pinctrl", },
+	{ .compatible = "mediatek,mt6797-pinctrl", .data = &mt6797_data },
 	{ }
 };
 
-static int mt6797_pinctrl_probe(struct platform_device *pdev)
-{
-	return mtk_paris_pinctrl_probe(pdev, &mt6797_data);
-}
-
 static struct platform_driver mt6797_pinctrl_driver = {
 	.driver = {
 		.name = "mt6797-pinctrl",
 		.of_match_table = mt6797_pinctrl_of_match,
 	},
-	.probe = mt6797_pinctrl_probe,
+	.probe = mtk_paris_pinctrl_probe,
 };
 
 static int __init mt6797_pinctrl_init(void)

drivers/pinctrl/mediatek/pinctrl-mt8183.c

@@ -567,22 +567,17 @@ static const struct mtk_pin_soc mt8183_data = {
 };
 
 static const struct of_device_id mt8183_pinctrl_of_match[] = {
-	{ .compatible = "mediatek,mt8183-pinctrl", },
+	{ .compatible = "mediatek,mt8183-pinctrl", .data = &mt8183_data },
 	{ }
 };
 
-static int mt8183_pinctrl_probe(struct platform_device *pdev)
-{
-	return mtk_paris_pinctrl_probe(pdev, &mt8183_data);
-}
-
 static struct platform_driver mt8183_pinctrl_driver = {
 	.driver = {
 		.name = "mt8183-pinctrl",
 		.of_match_table = mt8183_pinctrl_of_match,
 		.pm = &mtk_paris_pinctrl_pm_ops,
 	},
-	.probe = mt8183_pinctrl_probe,
+	.probe = mtk_paris_pinctrl_probe,
 };
 
 static int __init mt8183_pinctrl_init(void)

drivers/pinctrl/mediatek/pinctrl-mt8192.c

@@ -1381,22 +1381,17 @@ static const struct mtk_pin_soc mt8192_data = {
 };
 
 static const struct of_device_id mt8192_pinctrl_of_match[] = {
-	{ .compatible = "mediatek,mt8192-pinctrl", },
+	{ .compatible = "mediatek,mt8192-pinctrl", .data = &mt8192_data },
 	{ }
 };
 
-static int mt8192_pinctrl_probe(struct platform_device *pdev)
-{
-	return mtk_paris_pinctrl_probe(pdev, &mt8192_data);
-}
-
 static struct platform_driver mt8192_pinctrl_driver = {
 	.driver = {
 		.name = "mt8192-pinctrl",
 		.of_match_table = mt8192_pinctrl_of_match,
 		.pm = &mtk_paris_pinctrl_pm_ops,
 	},
-	.probe = mt8192_pinctrl_probe,
+	.probe = mtk_paris_pinctrl_probe,
 };
 
 static int __init mt8192_pinctrl_init(void)

drivers/pinctrl/mediatek/pinctrl-mt8195.c

@@ -959,22 +959,17 @@ static const struct mtk_pin_soc mt8195_data = {
 };
 
 static const struct of_device_id mt8195_pinctrl_of_match[] = {
-	{ .compatible = "mediatek,mt8195-pinctrl", },
+	{ .compatible = "mediatek,mt8195-pinctrl", .data = &mt8195_data },
 	{ }
 };
 
-static int mt8195_pinctrl_probe(struct platform_device *pdev)
-{
-	return mtk_paris_pinctrl_probe(pdev, &mt8195_data);
-}
-
 static struct platform_driver mt8195_pinctrl_driver = {
 	.driver = {
 		.name = "mt8195-pinctrl",
 		.of_match_table = mt8195_pinctrl_of_match,
 		.pm = &mtk_paris_pinctrl_pm_ops,
 	},
-	.probe = mt8195_pinctrl_probe,
+	.probe = mtk_paris_pinctrl_probe,
 };
 
 static int __init mt8195_pinctrl_init(void)

drivers/pinctrl/mediatek/pinctrl-paris.c

@@ -1021,8 +1021,7 @@ static int mtk_pctrl_build_state(struct platform_device *pdev)
 	return 0;
 }
 
-int mtk_paris_pinctrl_probe(struct platform_device *pdev,
-			    const struct mtk_pin_soc *soc)
+int mtk_paris_pinctrl_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct pinctrl_pin_desc *pins;
@@ -1034,7 +1033,11 @@ int mtk_paris_pinctrl_probe(struct platform_device *pdev,
 		return -ENOMEM;
 
 	platform_set_drvdata(pdev, hw);
-	hw->soc = soc;
+
+	hw->soc = device_get_match_data(dev);
+	if (!hw->soc)
+		return -ENOENT;
+
 	hw->dev = &pdev->dev;
 
 	if (!hw->soc->nbase_names)

drivers/pinctrl/mediatek/pinctrl-paris.h

@@ -57,8 +57,7 @@
 		id##_funcs,				\
 	}
 
-int mtk_paris_pinctrl_probe(struct platform_device *pdev,
-			    const struct mtk_pin_soc *soc);
+int mtk_paris_pinctrl_probe(struct platform_device *pdev);
 
 ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw,
 	unsigned int gpio, char *buf, unsigned int bufLen);