From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
To:     mturquette@baylibre.com
Cc:     sboyd@kernel.org, matthias.bgg@gmail.com,
        angelogioacchino.delregno@collabora.com, wenst@chromium.org,
        johnson.wang@mediatek.com, miles.chen@mediatek.com,
        chun-jie.chen@mediatek.com, daniel@makrotopia.org,
        fparent@baylibre.com, msp@baylibre.com, nfraprado@collabora.com,
        rex-bc.chen@mediatek.com, zhaojh329@gmail.com,
        sam.shih@mediatek.com, edward-jw.yang@mediatek.com,
        yangyingliang@huawei.com, granquet@baylibre.com,
        pablo.sun@mediatek.com, sean.wang@mediatek.com,
        chen.zhong@mediatek.com, linux-kernel@vger.kernel.org,
        linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, kernel@collabora.com
Subject: [PATCH v2 25/47] clk: mediatek: mt7622: Convert to platform driver and simple probe
Date:   Tue, 14 Feb 2023 14:41:05 +0100
Message-Id: <20230214134127.59273-26-angelogioacchino.delregno@collabora.com>
In-Reply-To: <20230214134127.59273-1-angelogioacchino.delregno@collabora.com>
References: <20230214134127.59273-1-angelogioacchino.delregno@collabora.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Convert the MT7622 topckgen and pericfg clock drivers to platform
drivers and use the simple probe mechanism. This also allows to
build these clocks as modules.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/clk/mediatek/clk-mt7622.c | 125 ++++++++----------------------
 1 file changed, 31 insertions(+), 94 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt7622.c b/drivers/clk/mediatek/clk-mt7622.c
index fb813f8d3a7d..7a002b73fcaa 100644
--- a/drivers/clk/mediatek/clk-mt7622.c
+++ b/drivers/clk/mediatek/clk-mt7622.c
@@ -490,107 +490,44 @@ static const struct mtk_clk_rst_desc clk_rst_desc = {
 	.rst_bank_nr = ARRAY_SIZE(pericfg_rst_ofs),
 };
 
-static int mtk_topckgen_init(struct platform_device *pdev)
-{
-	struct clk_hw_onecell_data *clk_data;
-	void __iomem *base;
-	struct device_node *node = pdev->dev.of_node;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
-
-	clk_data = mtk_alloc_clk_data(CLK_TOP_NR_CLK);
-
-	mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks),
-				    clk_data);
-
-	mtk_clk_register_factors(top_divs, ARRAY_SIZE(top_divs),
-				 clk_data);
-
-	mtk_clk_register_composites(&pdev->dev, top_muxes,
-				    ARRAY_SIZE(top_muxes), base,
-				    &mt7622_clk_lock, clk_data);
-
-	mtk_clk_register_dividers(top_adj_divs, ARRAY_SIZE(top_adj_divs),
-				  base, &mt7622_clk_lock, clk_data);
-
-	mtk_clk_register_gates(&pdev->dev, node, top_clks,
-			       ARRAY_SIZE(top_clks), clk_data);
-
-	return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
-}
-
-static int mtk_pericfg_init(struct platform_device *pdev)
-{
-	struct clk_hw_onecell_data *clk_data;
-	void __iomem *base;
-	int r;
-	struct device_node *node = pdev->dev.of_node;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
-
-	clk_data = mtk_alloc_clk_data(CLK_PERI_NR_CLK);
-
-	mtk_clk_register_gates(&pdev->dev, node, peri_clks,
-			       ARRAY_SIZE(peri_clks), clk_data);
-
-	mtk_clk_register_composites(&pdev->dev, peri_muxes,
-				    ARRAY_SIZE(peri_muxes), base,
-				    &mt7622_clk_lock, clk_data);
-
-	r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
-	if (r)
-		return r;
-
-	mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc);
-
-	return 0;
-}
+static const struct mtk_clk_desc topck_desc = {
+	.clks = top_clks,
+	.num_clks = ARRAY_SIZE(top_clks),
+	.fixed_clks = top_fixed_clks,
+	.num_fixed_clks = ARRAY_SIZE(top_fixed_clks),
+	.factor_clks = top_divs,
+	.num_factor_clks = ARRAY_SIZE(top_divs),
+	.composite_clks = top_muxes,
+	.num_composite_clks = ARRAY_SIZE(top_muxes),
+	.divider_clks = top_adj_divs,
+	.num_divider_clks = ARRAY_SIZE(top_adj_divs),
+	.clk_lock = &mt7622_clk_lock,
+};
+
+static const struct mtk_clk_desc peri_desc = {
+	.clks = peri_clks,
+	.num_clks = ARRAY_SIZE(peri_clks),
+	.composite_clks = peri_muxes,
+	.num_composite_clks = ARRAY_SIZE(peri_muxes),
+	.rst_desc = &clk_rst_desc,
+	.clk_lock = &mt7622_clk_lock,
+};
 
 static const struct of_device_id of_match_clk_mt7622[] = {
-	{
-		.compatible = "mediatek,mt7622-topckgen",
-		.data = mtk_topckgen_init,
-	}, {
-		.compatible = "mediatek,mt7622-pericfg",
-		.data = mtk_pericfg_init,
-	}, {
-		/* sentinel */
-	}
-};
-
-static int clk_mt7622_probe(struct platform_device *pdev)
-{
-	int (*clk_init)(struct platform_device *);
-	int r;
-
-	clk_init = of_device_get_match_data(&pdev->dev);
-	if (!clk_init)
-		return -EINVAL;
-
-	r = clk_init(pdev);
-	if (r)
-		dev_err(&pdev->dev,
-			"could not register clock provider: %s: %d\n",
-			pdev->name, r);
-
-	return r;
-}
+	{ .compatible = "mediatek,mt7622-topckgen", .data = &topck_desc },
+	{ .compatible = "mediatek,mt7622-pericfg", .data = &peri_desc },
+	{ /* sentinel */ }
+};
 
 static struct platform_driver clk_mt7622_drv = {
-	.probe = clk_mt7622_probe,
 	.driver = {
 		.name = "clk-mt7622",
 		.of_match_table = of_match_clk_mt7622,
 	},
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
 };
+module_platform_driver(clk_mt7622_drv)
 
-static int clk_mt7622_init(void)
-{
-	return platform_driver_register(&clk_mt7622_drv);
-}
-
-arch_initcall(clk_mt7622_init);
+MODULE_DESCRIPTION("MediaTek MT7622 clocks driver");
+MODULE_LICENSE("GPL");
-- 
2.39.1