linux-kernel - [PATCH v3 35/55] clk: mediatek: mt8186-mcu: Migrate to common probe mechanism

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Message-Id: <20230220150111.77897-36-angelogioacchino.delregno@collabora.com>
Date:   Mon, 20 Feb 2023 16:00:51 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     mturquette@...libre.com
Cc:     sboyd@...nel.org, matthias.bgg@...il.com,
        angelogioacchino.delregno@...labora.com, wenst@...omium.org,
        johnson.wang@...iatek.com, miles.chen@...iatek.com,
        chun-jie.chen@...iatek.com, daniel@...rotopia.org,
        fparent@...libre.com, msp@...libre.com, nfraprado@...labora.com,
        rex-bc.chen@...iatek.com, zhaojh329@...il.com,
        sam.shih@...iatek.com, edward-jw.yang@...iatek.com,
        yangyingliang@...wei.com, granquet@...libre.com,
        pablo.sun@...iatek.com, sean.wang@...iatek.com,
        chen.zhong@...iatek.com, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH v3 35/55] clk: mediatek: mt8186-mcu: Migrate to common probe mechanism

Convert MT8186 MCUSYS clocks to the common mtk_clk_simple_probe().

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Reviewed-by: Chen-Yu Tsai <wenst@...omium.org>
---
 drivers/clk/mediatek/clk-mt8186-mcu.c | 68 +++++----------------------
 1 file changed, 13 insertions(+), 55 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt8186-mcu.c b/drivers/clk/mediatek/clk-mt8186-mcu.c
index e52a2d986c99..895856df95df 100644
--- a/drivers/clk/mediatek/clk-mt8186-mcu.c
+++ b/drivers/clk/mediatek/clk-mt8186-mcu.c
@@ -43,67 +43,25 @@ static struct mtk_composite mcu_muxes[] = {
 	MUX(CLK_MCU_ARMPLL_BUS_SEL, "mcu_armpll_bus_sel", mcu_armpll_bus_parents, 0x2E0, 9, 2),
 };
 
-static const struct of_device_id of_match_clk_mt8186_mcu[] = {
-	{ .compatible = "mediatek,mt8186-mcusys", },
-	{}
+static const struct mtk_clk_desc mcu_desc = {
+	.composite_clks = mcu_muxes,
+	.num_composite_clks = ARRAY_SIZE(mcu_muxes),
 };
 
-static int clk_mt8186_mcu_probe(struct platform_device *pdev)
-{
-	struct clk_hw_onecell_data *clk_data;
-	struct device_node *node = pdev->dev.of_node;
-	int r;
-	void __iomem *base;
-
-	clk_data = mtk_alloc_clk_data(CLK_MCU_NR_CLK);
-	if (!clk_data)
-		return -ENOMEM;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base)) {
-		r = PTR_ERR(base);
-		goto free_mcu_data;
-	}
-
-	r = mtk_clk_register_composites(&pdev->dev, mcu_muxes,
-					ARRAY_SIZE(mcu_muxes), base,
-					NULL, clk_data);
-	if (r)
-		goto free_mcu_data;
-
-	r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
-	if (r)
-		goto unregister_composite_muxes;
-
-	platform_set_drvdata(pdev, clk_data);
-
-	return r;
-
-unregister_composite_muxes:
-	mtk_clk_unregister_composites(mcu_muxes, ARRAY_SIZE(mcu_muxes), clk_data);
-free_mcu_data:
-	mtk_free_clk_data(clk_data);
-	return r;
-}
-
-static int clk_mt8186_mcu_remove(struct platform_device *pdev)
-{
-	struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);
-	struct device_node *node = pdev->dev.of_node;
-
-	of_clk_del_provider(node);
-	mtk_clk_unregister_composites(mcu_muxes, ARRAY_SIZE(mcu_muxes), clk_data);
-	mtk_free_clk_data(clk_data);
-
-	return 0;
-}
+static const struct of_device_id of_match_clk_mt8186_mcu[] = {
+	{ .compatible = "mediatek,mt8186-mcusys", .data = &mcu_desc },
+	{ /* sentinel */}
+};
 
 static struct platform_driver clk_mt8186_mcu_drv = {
-	.probe = clk_mt8186_mcu_probe,
-	.remove = clk_mt8186_mcu_remove,
 	.driver = {
 		.name = "clk-mt8186-mcu",
 		.of_match_table = of_match_clk_mt8186_mcu,
 	},
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
 };
-builtin_platform_driver(clk_mt8186_mcu_drv);
+module_platform_driver(clk_mt8186_mcu_drv);
+
+MODULE_DESCRIPTION("MediaTek MT8186 mcusys clocks driver");
+MODULE_LICENSE("GPL");
-- 
2.39.1