Merge tag 'clk-meson-v6.18-1' of https://github.com/BayLibre/clk-meson into clk-amlogic

Pull Amlogic clk driver updates from Jerome Brunet:

 - Factorize Amlogic clock controller probe functions
 - Clean up Amlogic peripheral clocks definitions
 - Clean redundant Amlogic composite clock definitions

* tag 'clk-meson-v6.18-1' of https://github.com/BayLibre/clk-meson:
  clk: amlogic: c3-peripherals: use helper for basic composite clocks
  clk: amlogic: align s4 and c3 pwm clock descriptions
  clk: amlogic: add composite clock helpers
  clk: amlogic: use the common pclk definition
  clk: amlogic: introduce a common pclk definition
  clk: amlogic: pclk explicitly use CLK_IGNORE_UNUSED
  clk: amlogic: drop CLK_SET_RATE_PARENT from peripheral clocks
  clk: amlogic: move PCLK definition to clkc-utils
  clk: amlogic: aoclk: use clkc-utils syscon probe
  clk: amlogic: use probe helper in mmio based controllers
  clk: amlogic: add probe helper for mmio based controllers
  clk: amlogic: drop meson-clkcee
  clk: amlogic: naming consistency alignment

1 files changed, 85 insertions, 1 deletions

diff --git a/drivers/clk/meson/meson-clkc-utils.c b/drivers/clk/meson/meson-clkc-utils.c
index 6937d1482719..870f50548e26 100644
--- a/drivers/clk/meson/meson-clkc-utils.c
+++ b/drivers/clk/meson/meson-clkc-utils.c
@@ -3,9 +3,13 @@
  * Copyright (c) 2023 Neil Armstrong <neil.armstrong@linaro.org>
  */
 
-#include <linux/of_device.h>
 #include <linux/clk-provider.h>
+#include <linux/mfd/syscon.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
 #include "meson-clkc-utils.h"
 
 struct clk_hw *meson_clk_hw_get(struct of_phandle_args *clkspec, void *clk_hw_data)
@@ -22,6 +26,86 @@ struct clk_hw *meson_clk_hw_get(struct of_phandle_args *clkspec, void *clk_hw_da
 }
 EXPORT_SYMBOL_NS_GPL(meson_clk_hw_get, "CLK_MESON");
 
+static int meson_clkc_init(struct device *dev, struct regmap *map)
+{
+	const struct meson_clkc_data *data;
+	struct clk_hw *hw;
+	int ret, i;
+
+	data = of_device_get_match_data(dev);
+	if (!data)
+		return -EINVAL;
+
+	if (data->init_count)
+		regmap_multi_reg_write(map, data->init_regs, data->init_count);
+
+	for (i = 0; i < data->hw_clks.num; i++) {
+		hw = data->hw_clks.hws[i];
+
+		/* array might be sparse */
+		if (!hw)
+			continue;
+
+		ret = devm_clk_hw_register(dev, hw);
+		if (ret) {
+			dev_err(dev, "registering %s clock failed\n",
+				hw->init->name);
+			return ret;
+		}
+	}
+
+	return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get, (void *)&data->hw_clks);
+}
+
+int meson_clkc_syscon_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np;
+	struct regmap *map;
+
+	np = of_get_parent(dev->of_node);
+	map = syscon_node_to_regmap(np);
+	of_node_put(np);
+	if (IS_ERR(map)) {
+		dev_err(dev, "failed to get parent syscon regmap\n");
+		return PTR_ERR(map);
+	}
+
+	return meson_clkc_init(dev, map);
+}
+EXPORT_SYMBOL_NS_GPL(meson_clkc_syscon_probe, "CLK_MESON");
+
+int meson_clkc_mmio_probe(struct platform_device *pdev)
+{
+	const struct meson_clkc_data *data;
+	struct device *dev = &pdev->dev;
+	struct resource *res;
+	void __iomem *base;
+	struct regmap *map;
+	struct regmap_config regmap_cfg = {
+			.reg_bits	= 32,
+			.val_bits	= 32,
+			.reg_stride	= 4,
+	};
+
+	data = of_device_get_match_data(dev);
+	if (!data)
+		return -EINVAL;
+
+	base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	regmap_cfg.max_register = resource_size(res) - regmap_cfg.reg_stride;
+
+	map = devm_regmap_init_mmio(dev, base, &regmap_cfg);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+
+	return meson_clkc_init(dev, map);
+}
+EXPORT_SYMBOL_NS_GPL(meson_clkc_mmio_probe, "CLK_MESON");
+
 MODULE_DESCRIPTION("Amlogic Clock Controller Utilities");
 MODULE_LICENSE("GPL");
 MODULE_IMPORT_NS("CLK_MESON");