firmware/br-ext-chip-goke/board/gk7205v200/kernel/patches/00_drivers-clk-goke-clk.c.patch

--- linux-4.9.37/drivers/clk/goke/clk.c	1970-01-01 03:00:00.000000000 +0300
+++ linux-4.9.y/drivers/clk/goke/clk.c	2021-06-07 13:01:33.000000000 +0300
@@ -0,0 +1,188 @@
+/*
+ * Copyright (c) Hunan Goke,Chengdu Goke,Shandong Goke. 2021. All rights reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/slab.h>
+
+#include "clk.h"
+
+static DEFINE_SPINLOCK(gk_clk_lock);
+
+struct gk_clock_data *gk_clk_init(struct device_node *np,
+					     int nr_clks)
+{
+	struct gk_clock_data *clk_data;
+	struct clk **clk_table;
+	void __iomem *base;
+
+	base = of_iomap(np, 0);
+	if (!base) {
+		pr_err("%s: failed to map clock registers\n", __func__);
+		goto err;
+	}
+
+	clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+	if (!clk_data) {
+		pr_err("%s: could not allocate clock data\n", __func__);
+		goto err;
+	}
+	clk_data->base = base;
+
+	clk_table = kzalloc(sizeof(struct clk *) * nr_clks, GFP_KERNEL);
+	if (!clk_table) {
+		pr_err("%s: could not allocate clock lookup table\n", __func__);
+		goto err_data;
+	}
+	clk_data->clk_data.clks = clk_table;
+	clk_data->clk_data.clk_num = nr_clks;
+	of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data->clk_data);
+	return clk_data;
+err_data:
+	kfree(clk_data);
+err:
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(gk_clk_init);
+
+int gk_clk_register_fixed_rate(const struct gk_fixed_rate_clock *clks,
+					 int nums, struct gk_clock_data *data)
+{
+	struct clk *clk;
+	int i;
+
+	for (i = 0; i < nums; i++) {
+		clk = clk_register_fixed_rate(NULL, clks[i].name,
+					      clks[i].parent_name,
+					      clks[i].flags,
+					      clks[i].fixed_rate);
+		if (IS_ERR(clk)) {
+			pr_err("%s: failed to register clock %s\n",
+			       __func__, clks[i].name);
+			goto err;
+		}
+		data->clk_data.clks[clks[i].id] = clk;
+	}
+
+	return 0;
+
+err:
+	while (i--)
+		clk_unregister_fixed_rate(data->clk_data.clks[clks[i].id]);
+
+	return PTR_ERR(clk);
+}
+EXPORT_SYMBOL_GPL(gk_clk_register_fixed_rate);
+
+int gk_clk_register_fixed_factor(const struct gk_fixed_factor_clock *clks,
+					   int nums,
+					   struct gk_clock_data *data)
+{
+	struct clk *clk;
+	int i;
+
+	for (i = 0; i < nums; i++) {
+		clk = clk_register_fixed_factor(NULL, clks[i].name,
+						clks[i].parent_name,
+						clks[i].flags, clks[i].mult,
+						clks[i].div);
+		if (IS_ERR(clk)) {
+			pr_err("%s: failed to register clock %s\n",
+			       __func__, clks[i].name);
+			goto err;
+		}
+		data->clk_data.clks[clks[i].id] = clk;
+	}
+
+	return 0;
+
+err:
+	while (i--)
+		clk_unregister_fixed_factor(data->clk_data.clks[clks[i].id]);
+
+	return PTR_ERR(clk);
+}
+EXPORT_SYMBOL_GPL(gk_clk_register_fixed_factor);
+
+int gk_clk_register_mux(const struct gk_mux_clock *clks,
+				  int nums, struct gk_clock_data *data)
+{
+	struct clk *clk;
+	void __iomem *base = data->base;
+	int i;
+
+	for (i = 0; i < nums; i++) {
+		u32 mask = BIT(clks[i].width) - 1;
+
+		clk = clk_register_mux_table(NULL, clks[i].name,
+					clks[i].parent_names,
+					clks[i].num_parents, clks[i].flags,
+					base + clks[i].offset, clks[i].shift,
+					mask, clks[i].mux_flags,
+					clks[i].table, &gk_clk_lock);
+		if (IS_ERR(clk)) {
+			pr_err("%s: failed to register clock %s\n",
+			       __func__, clks[i].name);
+			goto err;
+		}
+
+		if (clks[i].alias)
+			clk_register_clkdev(clk, clks[i].alias, NULL);
+
+		data->clk_data.clks[clks[i].id] = clk;
+	}
+
+	return 0;
+
+err:
+	while (i--)
+		clk_unregister_mux(data->clk_data.clks[clks[i].id]);
+
+	return PTR_ERR(clk);
+}
+EXPORT_SYMBOL_GPL(gk_clk_register_mux);
+
+
+int gk_clk_register_gate(const struct gk_gate_clock *clks,
+				       int nums, struct gk_clock_data *data)
+{
+	struct clk *clk;
+	void __iomem *base = data->base;
+	int i;
+
+	for (i = 0; i < nums; i++) {
+		clk = clk_register_gate(NULL, clks[i].name,
+						clks[i].parent_name,
+						clks[i].flags,
+						base + clks[i].offset,
+						clks[i].bit_idx,
+						clks[i].gate_flags,
+						&gk_clk_lock);
+		if (IS_ERR(clk)) {
+			pr_err("%s: failed to register clock %s\n",
+			       __func__, clks[i].name);
+			goto err;
+		}
+
+		if (clks[i].alias)
+			clk_register_clkdev(clk, clks[i].alias, NULL);
+
+		data->clk_data.clks[clks[i].id] = clk;
+	}
+
+	return 0;
+
+err:
+	while (i--)
+		clk_unregister_gate(data->clk_data.clks[clks[i].id]);
+
+	return PTR_ERR(clk);
+}
+EXPORT_SYMBOL_GPL(gk_clk_register_gate); 
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