linux-kernel - [PATCH v6 33/54] clk: mediatek: mt7986-infracfg: Migrate to common probe mechanism

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Date:   Mon,  6 Mar 2023 15:05:22 +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, kernel@...labora.com
Subject: [PATCH v6 33/54] clk: mediatek: mt7986-infracfg: Migrate to common probe mechanism

Convert this driver to use the common mtk_clk_simple_probe() mechanism.
While at it, also use module_platform_driver() instead, as this driver
just gained a .remove() callback during the conversion.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Reviewed-by: Chen-Yu Tsai <wenst@...omium.org>
Tested-by: Daniel Golle <daniel@...rotopia.org>
---
 drivers/clk/mediatek/clk-mt7986-infracfg.c | 61 ++++++----------------
 1 file changed, 17 insertions(+), 44 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt7986-infracfg.c b/drivers/clk/mediatek/clk-mt7986-infracfg.c
index 0a4bf87ee160..0299faad0733 100644
--- a/drivers/clk/mediatek/clk-mt7986-infracfg.c
+++ b/drivers/clk/mediatek/clk-mt7986-infracfg.c
@@ -157,57 +157,30 @@ static const struct mtk_gate infra_clks[] = {
 	GATE_INFRA2(CLK_INFRA_IPCIEB_CK, "infra_ipcieb", "sysaxi_sel", 15),
 };
 
-static int clk_mt7986_infracfg_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;
-	int nr = ARRAY_SIZE(infra_divs) + ARRAY_SIZE(infra_muxes) +
-		 ARRAY_SIZE(infra_clks);
-
-	base = of_iomap(node, 0);
-	if (!base) {
-		pr_err("%s(): ioremap failed\n", __func__);
-		return -ENOMEM;
-	}
-
-	clk_data = mtk_alloc_clk_data(nr);
-
-	if (!clk_data)
-		return -ENOMEM;
-
-	mtk_clk_register_factors(infra_divs, ARRAY_SIZE(infra_divs), clk_data);
-	mtk_clk_register_muxes(&pdev->dev, infra_muxes,
-			       ARRAY_SIZE(infra_muxes), node,
-			       &mt7986_clk_lock, clk_data);
-	mtk_clk_register_gates(&pdev->dev, node, infra_clks,
-			       ARRAY_SIZE(infra_clks), clk_data);
-
-	r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
-	if (r) {
-		pr_err("%s(): could not register clock provider: %d\n",
-		       __func__, r);
-		goto free_infracfg_data;
-	}
-	return r;
-
-free_infracfg_data:
-	mtk_free_clk_data(clk_data);
-	return r;
-
-}
+static const struct mtk_clk_desc infra_desc = {
+	.clks = infra_clks,
+	.num_clks = ARRAY_SIZE(infra_clks),
+	.factor_clks = infra_divs,
+	.num_factor_clks = ARRAY_SIZE(infra_divs),
+	.mux_clks = infra_muxes,
+	.num_mux_clks = ARRAY_SIZE(infra_muxes),
+	.clk_lock = &mt7986_clk_lock,
+};
 
 static const struct of_device_id of_match_clk_mt7986_infracfg[] = {
-	{ .compatible = "mediatek,mt7986-infracfg", },
-	{}
+	{ .compatible = "mediatek,mt7986-infracfg", .data = &infra_desc },
+	{ /* sentinel */ }
 };
 
 static struct platform_driver clk_mt7986_infracfg_drv = {
-	.probe = clk_mt7986_infracfg_probe,
 	.driver = {
 		.name = "clk-mt7986-infracfg",
 		.of_match_table = of_match_clk_mt7986_infracfg,
 	},
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
 };
-builtin_platform_driver(clk_mt7986_infracfg_drv);
+module_platform_driver(clk_mt7986_infracfg_drv);
+
+MODULE_DESCRIPTION("MediaTek MT7986 infracfg clocks driver");
+MODULE_LICENSE("GPL");
-- 
2.39.2