clk: amlogic: drop meson-clkcee

What is being done by the Amlogic clock controller registration helper for
EE controllers could benefit other controllers. As such, having a specific
module for this makes little sense.

Move the helper function to clkc-utils and rename it to describe what it
does, registering syscon based controller, instead of what it serves.

Link: https://lore.kernel.org/r/20250825-meson-clk-cleanup-24-v2-1-0f402f01e117@baylibre.com
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

1 files changed, 49 insertions, 1 deletions

diff --git a/drivers/clk/meson/meson-clkc-utils.c b/drivers/clk/meson/meson-clkc-utils.c
index 6937d1482719..49f562d0f203 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 +26,50 @@ 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");
 
+int meson_clkc_syscon_probe(struct platform_device *pdev)
+{
+	const struct meson_clkc_data *data;
+	struct device *dev = &pdev->dev;
+	struct device_node *np;
+	struct regmap *map;
+	struct clk_hw *hw;
+	int ret, i;
+
+	data = of_device_get_match_data(dev);
+	if (!data)
+		return -EINVAL;
+
+	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);
+	}
+
+	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);
+}
+EXPORT_SYMBOL_NS_GPL(meson_clkc_syscon_probe, "CLK_MESON");
+
 MODULE_DESCRIPTION("Amlogic Clock Controller Utilities");
 MODULE_LICENSE("GPL");
 MODULE_IMPORT_NS("CLK_MESON");