clk: amlogic: use probe helper in mmio based controllers

Factorize the probe function of the mmio based amlogic clock controllers
using the newly introduced probe helper. This removes a fair amount
of duplicated code.

Reviewed-by: Chuan Liu <chuan.liu@amlogic.com>
Link: https://lore.kernel.org/r/20250825-meson-clk-cleanup-24-v2-3-0f402f01e117@baylibre.com
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

7 files changed, 66 insertions, 304 deletions

diff --git a/drivers/clk/meson/a1-peripherals.c b/drivers/clk/meson/a1-peripherals.c
index 9e352dba5477..b2feb8fe4775 100644
--- a/drivers/clk/meson/a1-peripherals.c
+++ b/drivers/clk/meson/a1-peripherals.c
@@ -2057,54 +2057,24 @@ static struct clk_hw *a1_peripherals_hw_clks[] = {
 	[CLKID_DMC_SEL2]		= &a1_dmc_sel2.hw,
 };
 
-static const struct regmap_config a1_peripherals_regmap_cfg = {
-	.reg_bits   = 32,
-	.val_bits   = 32,
-	.reg_stride = 4,
-	.max_register = DMC_CLK_CTRL,
-};
-
-static struct meson_clk_hw_data a1_peripherals_clks = {
-	.hws = a1_peripherals_hw_clks,
-	.num = ARRAY_SIZE(a1_peripherals_hw_clks),
-};
-
-static int a1_peripherals_clkc_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	void __iomem *base;
-	struct regmap *map;
-	int clkid, err;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return dev_err_probe(dev, PTR_ERR(base),
-				     "can't ioremap resource\n");
-
-	map = devm_regmap_init_mmio(dev, base, &a1_peripherals_regmap_cfg);
-	if (IS_ERR(map))
-		return dev_err_probe(dev, PTR_ERR(map),
-				     "can't init regmap mmio region\n");
-
-	for (clkid = 0; clkid < a1_peripherals_clks.num; clkid++) {
-		err = devm_clk_hw_register(dev, a1_peripherals_clks.hws[clkid]);
-		if (err)
-			return dev_err_probe(dev, err,
-					     "clock[%d] registration failed\n",
-					     clkid);
-	}
-
-	return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get, &a1_peripherals_clks);
-}
+static const struct meson_clkc_data a1_peripherals_clkc_data = {
+	.hw_clks = {
+		.hws = a1_peripherals_hw_clks,
+		.num = ARRAY_SIZE(a1_peripherals_hw_clks),
+	},
+};
 
 static const struct of_device_id a1_peripherals_clkc_match_table[] = {
-	{ .compatible = "amlogic,a1-peripherals-clkc", },
+	{
+		.compatible = "amlogic,a1-peripherals-clkc",
+		.data = &a1_peripherals_clkc_data,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, a1_peripherals_clkc_match_table);
 
 static struct platform_driver a1_peripherals_clkc_driver = {
-	.probe = a1_peripherals_clkc_probe,
+	.probe = meson_clkc_mmio_probe,
 	.driver = {
 		.name = "a1-peripherals-clkc",
 		.of_match_table = a1_peripherals_clkc_match_table,
diff --git a/drivers/clk/meson/a1-pll.c b/drivers/clk/meson/a1-pll.c
index 79ef4cbe9553..1f82e9c7c14e 100644
--- a/drivers/clk/meson/a1-pll.c
+++ b/drivers/clk/meson/a1-pll.c
@@ -295,56 +295,24 @@ static struct clk_hw *a1_pll_hw_clks[] = {
 	[CLKID_HIFI_PLL]	= &a1_hifi_pll.hw,
 };
 
-static const struct regmap_config a1_pll_regmap_cfg = {
-	.reg_bits   = 32,
-	.val_bits   = 32,
-	.reg_stride = 4,
-	.max_register = ANACTRL_HIFIPLL_STS,
-};
-
-static struct meson_clk_hw_data a1_pll_clks = {
-	.hws = a1_pll_hw_clks,
-	.num = ARRAY_SIZE(a1_pll_hw_clks),
+static const struct meson_clkc_data a1_pll_clkc_data = {
+	.hw_clks = {
+		.hws = a1_pll_hw_clks,
+		.num = ARRAY_SIZE(a1_pll_hw_clks),
+	},
 };
 
-static int a1_pll_clkc_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	void __iomem *base;
-	struct regmap *map;
-	int clkid, err;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return dev_err_probe(dev, PTR_ERR(base),
-				     "can't ioremap resource\n");
-
-	map = devm_regmap_init_mmio(dev, base, &a1_pll_regmap_cfg);
-	if (IS_ERR(map))
-		return dev_err_probe(dev, PTR_ERR(map),
-				     "can't init regmap mmio region\n");
-
-	/* Register clocks */
-	for (clkid = 0; clkid < a1_pll_clks.num; clkid++) {
-		err = devm_clk_hw_register(dev, a1_pll_clks.hws[clkid]);
-		if (err)
-			return dev_err_probe(dev, err,
-					     "clock[%d] registration failed\n",
-					     clkid);
-	}
-
-	return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get,
-					   &a1_pll_clks);
-}
-
 static const struct of_device_id a1_pll_clkc_match_table[] = {
-	{ .compatible = "amlogic,a1-pll-clkc", },
+	{
+		.compatible = "amlogic,a1-pll-clkc",
+		.data = &a1_pll_clkc_data,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, a1_pll_clkc_match_table);
 
 static struct platform_driver a1_pll_clkc_driver = {
-	.probe = a1_pll_clkc_probe,
+	.probe = meson_clkc_mmio_probe,
 	.driver = {
 		.name = "a1-pll-clkc",
 		.of_match_table = a1_pll_clkc_match_table,
diff --git a/drivers/clk/meson/c3-peripherals.c b/drivers/clk/meson/c3-peripherals.c
index a09cb1435ab1..e9c1ef99be13 100644
--- a/drivers/clk/meson/c3-peripherals.c
+++ b/drivers/clk/meson/c3-peripherals.c
@@ -2091,52 +2091,17 @@ static struct clk_hw *c3_peripherals_hw_clks[] = {
 	[CLKID_VAPB]			= &c3_vapb.hw,
 };
 
-static const struct regmap_config c3_peripherals_regmap_cfg = {
-	.reg_bits       = 32,
-	.val_bits       = 32,
-	.reg_stride     = 4,
-	.max_register   = NNA_CLK_CTRL,
-};
-
-static struct meson_clk_hw_data c3_peripherals_clks = {
-	.hws = c3_peripherals_hw_clks,
-	.num = ARRAY_SIZE(c3_peripherals_hw_clks),
-};
-
-static int c3_peripherals_clkc_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct regmap *regmap;
-	void __iomem *base;
-	int clkid, ret;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
-
-	regmap = devm_regmap_init_mmio(dev, base, &c3_peripherals_regmap_cfg);
-	if (IS_ERR(regmap))
-		return PTR_ERR(regmap);
-
-	for (clkid = 0; clkid < c3_peripherals_clks.num; clkid++) {
-		/* array might be sparse */
-		if (!c3_peripherals_clks.hws[clkid])
-			continue;
-
-		ret = devm_clk_hw_register(dev, c3_peripherals_clks.hws[clkid]);
-		if (ret) {
-			dev_err(dev, "Clock registration failed\n");
-			return ret;
-		}
-	}
-
-	return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get,
-					   &c3_peripherals_clks);
-}
+static const struct meson_clkc_data c3_peripherals_clkc_data = {
+	.hw_clks = {
+		.hws = c3_peripherals_hw_clks,
+		.num = ARRAY_SIZE(c3_peripherals_hw_clks),
+	},
+};
 
 static const struct of_device_id c3_peripherals_clkc_match_table[] = {
 	{
 		.compatible = "amlogic,c3-peripherals-clkc",
+		.data = &c3_peripherals_clkc_data,
 	},
 	{ /* sentinel */ }
 };
@@ -2144,7 +2109,7 @@ static const struct of_device_id c3_peripherals_clkc_match_table[] = {
 MODULE_DEVICE_TABLE(of, c3_peripherals_clkc_match_table);
 
 static struct platform_driver c3_peripherals_clkc_driver = {
-	.probe		= c3_peripherals_clkc_probe,
+	.probe		= meson_clkc_mmio_probe,
 	.driver		= {
 		.name	= "c3-peripherals-clkc",
 		.of_match_table = c3_peripherals_clkc_match_table,
diff --git a/drivers/clk/meson/c3-pll.c b/drivers/clk/meson/c3-pll.c
index ccfcd4b5be89..dd047d17488c 100644
--- a/drivers/clk/meson/c3-pll.c
+++ b/drivers/clk/meson/c3-pll.c
@@ -653,59 +653,24 @@ static struct clk_hw *c3_pll_hw_clks[] = {
 	[CLKID_MCLK1]		= &c3_mclk1.hw
 };
 
-static const struct regmap_config c3_pll_regmap_cfg = {
-	.reg_bits       = 32,
-	.val_bits       = 32,
-	.reg_stride     = 4,
-	.max_register   = ANACTRL_MPLL_CTRL4,
-};
-
-static struct meson_clk_hw_data c3_pll_clks = {
-	.hws = c3_pll_hw_clks,
-	.num = ARRAY_SIZE(c3_pll_hw_clks),
+static const struct meson_clkc_data c3_pll_clkc_data = {
+	.hw_clks = {
+		.hws = c3_pll_hw_clks,
+		.num = ARRAY_SIZE(c3_pll_hw_clks),
+	},
 };
 
-static int c3_pll_clkc_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct regmap *regmap;
-	void __iomem *base;
-	int clkid, ret;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
-
-	regmap = devm_regmap_init_mmio(dev, base, &c3_pll_regmap_cfg);
-	if (IS_ERR(regmap))
-		return PTR_ERR(regmap);
-
-	for (clkid = 0; clkid < c3_pll_clks.num; clkid++) {
-		/* array might be sparse */
-		if (!c3_pll_clks.hws[clkid])
-			continue;
-
-		ret = devm_clk_hw_register(dev, c3_pll_clks.hws[clkid]);
-		if (ret) {
-			dev_err(dev, "Clock registration failed\n");
-			return ret;
-		}
-	}
-
-	return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get,
-					   &c3_pll_clks);
-}
-
 static const struct of_device_id c3_pll_clkc_match_table[] = {
 	{
 		.compatible = "amlogic,c3-pll-clkc",
+		.data = &c3_pll_clkc_data,
 	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, c3_pll_clkc_match_table);
 
 static struct platform_driver c3_pll_clkc_driver = {
-	.probe		= c3_pll_clkc_probe,
+	.probe		= meson_clkc_mmio_probe,
 	.driver		= {
 		.name	= "c3-pll-clkc",
 		.of_match_table = c3_pll_clkc_match_table,
diff --git a/drivers/clk/meson/meson8-ddr.c b/drivers/clk/meson/meson8-ddr.c
index 6a9efde9b570..0f93774f7371 100644
--- a/drivers/clk/meson/meson8-ddr.c
+++ b/drivers/clk/meson/meson8-ddr.c
@@ -83,57 +83,26 @@ static struct clk_hw *meson8_ddr_hw_clks[] = {
 	[DDR_CLKID_DDR_PLL]		= &meson8_ddr_pll.hw,
 };
 
-static struct meson_clk_hw_data meson8_ddr_clks = {
-	.hws = meson8_ddr_hw_clks,
-	.num = ARRAY_SIZE(meson8_ddr_hw_clks),
-};
-
-static const struct regmap_config meson8_ddr_regmap_cfg = {
-	.reg_bits = 8,
-	.val_bits = 32,
-	.reg_stride = 4,
-	.max_register = DDR_CLK_STS,
+static const struct meson_clkc_data meson8_ddr_clkc_data = {
+	.hw_clks = {
+		.hws = meson8_ddr_hw_clks,
+		.num = ARRAY_SIZE(meson8_ddr_hw_clks),
+	},
 };
 
-static int meson8_ddr_clkc_probe(struct platform_device *pdev)
-{
-	struct regmap *regmap;
-	void __iomem *base;
-	struct clk_hw *hw;
-	int ret, i;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
-
-	regmap = devm_regmap_init_mmio(&pdev->dev, base,
-				       &meson8_ddr_regmap_cfg);
-	if (IS_ERR(regmap))
-		return PTR_ERR(regmap);
-
-	/* Register all clks */
-	for (i = 0; i < meson8_ddr_clks.num; i++) {
-		hw = meson8_ddr_clks.hws[i];
-
-		ret = devm_clk_hw_register(&pdev->dev, hw);
-		if (ret) {
-			dev_err(&pdev->dev, "Clock registration failed\n");
-			return ret;
-		}
-	}
-
-	return devm_of_clk_add_hw_provider(&pdev->dev, meson_clk_hw_get,
-					   &meson8_ddr_clks);
-}
-
 static const struct of_device_id meson8_ddr_clkc_match_table[] = {
-	{ .compatible = "amlogic,meson8-ddr-clkc" },
-	{ .compatible = "amlogic,meson8b-ddr-clkc" },
+	{
+		.compatible = "amlogic,meson8-ddr-clkc",
+		.data = &meson8_ddr_clkc_data,
+	}, {
+		.compatible = "amlogic,meson8b-ddr-clkc",
+		.data = &meson8_ddr_clkc_data,
+	},
 	{ /* sentinel */ }
 };
 
 static struct platform_driver meson8_ddr_clkc_driver = {
-	.probe		= meson8_ddr_clkc_probe,
+	.probe		= meson_clkc_mmio_probe,
 	.driver		= {
 		.name	= "meson8-ddr-clkc",
 		.of_match_table = meson8_ddr_clkc_match_table,
diff --git a/drivers/clk/meson/s4-peripherals.c b/drivers/clk/meson/s4-peripherals.c
index 9bcd35f12836..fc1500df926d 100644
--- a/drivers/clk/meson/s4-peripherals.c
+++ b/drivers/clk/meson/s4-peripherals.c
@@ -3449,59 +3449,24 @@ static struct clk_hw *s4_peripherals_hw_clks[] = {
 	[CLKID_HDCP22_SKPCLK]		= &s4_hdcp22_skpclk.hw,
 };
 
-static const struct regmap_config s4_peripherals_regmap_cfg = {
-	.reg_bits       = 32,
-	.val_bits       = 32,
-	.reg_stride     = 4,
-	.max_register   = CLKCTRL_DEMOD_CLK_CTRL,
-};
-
-static struct meson_clk_hw_data s4_peripherals_clks = {
-	.hws = s4_peripherals_hw_clks,
-	.num = ARRAY_SIZE(s4_peripherals_hw_clks),
+static const struct meson_clkc_data s4_peripherals_clkc_data = {
+	.hw_clks = {
+		.hws = s4_peripherals_hw_clks,
+		.num = ARRAY_SIZE(s4_peripherals_hw_clks),
+	},
 };
 
-static int s4_peripherals_clkc_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct regmap *regmap;
-	void __iomem *base;
-	int ret, i;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return dev_err_probe(dev, PTR_ERR(base),
-				     "can't ioremap resource\n");
-
-	regmap = devm_regmap_init_mmio(dev, base, &s4_peripherals_regmap_cfg);
-	if (IS_ERR(regmap))
-		return dev_err_probe(dev, PTR_ERR(regmap),
-				     "can't init regmap mmio region\n");
-
-	for (i = 0; i < s4_peripherals_clks.num; i++) {
-		/* array might be sparse */
-		if (!s4_peripherals_clks.hws[i])
-			continue;
-
-		ret = devm_clk_hw_register(dev, s4_peripherals_clks.hws[i]);
-		if (ret)
-			return dev_err_probe(dev, ret,
-					     "clock[%d] registration failed\n", i);
-	}
-
-	return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get, &s4_peripherals_clks);
-}
-
 static const struct of_device_id s4_peripherals_clkc_match_table[] = {
 	{
 		.compatible = "amlogic,s4-peripherals-clkc",
+		.data = &s4_peripherals_clkc_data,
 	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, s4_peripherals_clkc_match_table);
 
 static struct platform_driver s4_peripherals_clkc_driver = {
-	.probe		= s4_peripherals_clkc_probe,
+	.probe		= meson_clkc_mmio_probe,
 	.driver		= {
 		.name	= "s4-peripherals-clkc",
 		.of_match_table = s4_peripherals_clkc_match_table,
diff --git a/drivers/clk/meson/s4-pll.c b/drivers/clk/meson/s4-pll.c
index 6a266bcafd62..56ce6f566e53 100644
--- a/drivers/clk/meson/s4-pll.c
+++ b/drivers/clk/meson/s4-pll.c
@@ -798,66 +798,26 @@ static const struct reg_sequence s4_pll_init_regs[] = {
 	{ .reg = ANACTRL_MPLL_CTRL0,	.def = 0x00000543 },
 };
 
-static const struct regmap_config s4_pll_clkc_regmap_cfg = {
-	.reg_bits       = 32,
-	.val_bits       = 32,
-	.reg_stride     = 4,
-	.max_register   = ANACTRL_HDMIPLL_CTRL0,
-};
-
-static struct meson_clk_hw_data s4_pll_clks = {
-	.hws = s4_pll_hw_clks,
-	.num = ARRAY_SIZE(s4_pll_hw_clks),
-};
-
-static int s4_pll_clkc_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct regmap *regmap;
-	void __iomem *base;
-	int ret, i;
-
-	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return dev_err_probe(dev, PTR_ERR(base),
-				     "can't ioremap resource\n");
-
-	regmap = devm_regmap_init_mmio(dev, base, &s4_pll_clkc_regmap_cfg);
-	if (IS_ERR(regmap))
-		return dev_err_probe(dev, PTR_ERR(regmap),
-				     "can't init regmap mmio region\n");
-
-	ret = regmap_multi_reg_write(regmap, s4_pll_init_regs, ARRAY_SIZE(s4_pll_init_regs));
-	if (ret)
-		return dev_err_probe(dev, ret,
-				     "Failed to init registers\n");
-
-	/* Register clocks */
-	for (i = 0; i < s4_pll_clks.num; i++) {
-		/* array might be sparse */
-		if (!s4_pll_clks.hws[i])
-			continue;
-
-		ret = devm_clk_hw_register(dev, s4_pll_clks.hws[i]);
-		if (ret)
-			return dev_err_probe(dev, ret,
-					     "clock[%d] registration failed\n", i);
-	}
-
-	return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get,
-					   &s4_pll_clks);
-}
+static const struct meson_clkc_data s4_pll_clkc_data = {
+	.hw_clks = {
+		.hws = s4_pll_hw_clks,
+		.num = ARRAY_SIZE(s4_pll_hw_clks),
+	},
+	.init_regs = s4_pll_init_regs,
+	.init_count = ARRAY_SIZE(s4_pll_init_regs),
+};
 
 static const struct of_device_id s4_pll_clkc_match_table[] = {
 	{
 		.compatible = "amlogic,s4-pll-clkc",
+		.data = &s4_pll_clkc_data,
 	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, s4_pll_clkc_match_table);
 
 static struct platform_driver s4_pll_clkc_driver = {
-	.probe		= s4_pll_clkc_probe,
+	.probe		= meson_clkc_mmio_probe,
 	.driver		= {
 		.name	= "s4-pll-clkc",
 		.of_match_table = s4_pll_clkc_match_table,