4 files changed, 52 insertions, 12 deletions

diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig
index 33d148e19066..9735335b17a9 100644
--- a/drivers/clk/meson/Kconfig
+++ b/drivers/clk/meson/Kconfig
@@ -11,6 +11,7 @@ config COMMON_CLK_MESON8B
 	bool
 	depends on COMMON_CLK_AMLOGIC
 	select RESET_CONTROLLER
+	select REGMAP
 	help
 	  Support for the clock controller on AmLogic S802 (Meson8),
 	  S805 (Meson8b) and S812 (Meson8m2) devices. Say Y if you
@@ -29,6 +30,7 @@ config COMMON_CLK_AXG
 	bool
 	depends on COMMON_CLK_AMLOGIC
 	select RESET_CONTROLLER
+	select REGMAP
 	help
 	  Support for the clock controller on AmLogic A113D devices, aka axg.
 	  Say Y if you want peripherals and CPU frequency scaling to work.
diff --git a/drivers/clk/meson/axg.c b/drivers/clk/meson/axg.c
index bc5c29f13282..aed0f9e64f71 100644
--- a/drivers/clk/meson/axg.c
+++ b/drivers/clk/meson/axg.c
@@ -11,10 +11,11 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
+#include <linux/init.h>
 #include <linux/of_address.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
-#include <linux/init.h>
+#include <linux/regmap.h>
 
 #include "clkc.h"
 #include "axg.h"
@@ -791,12 +792,19 @@ static const struct of_device_id clkc_match_table[] = {
 	{}
 };
 
+static const struct regmap_config clkc_regmap_config = {
+	.reg_bits       = 32,
+	.val_bits       = 32,
+	.reg_stride     = 4,
+};
+
 static int axg_clkc_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	const struct clkc_data *clkc_data;
 	struct resource *res;
 	void __iomem *clk_base;
+	struct regmap *map;
 	int ret, i;
 
 	clkc_data = of_device_get_match_data(dev);
@@ -807,12 +815,17 @@ static int axg_clkc_probe(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res)
 		return -EINVAL;
+
 	clk_base = devm_ioremap(dev, res->start, resource_size(res));
 	if (!clk_base) {
 		dev_err(dev, "Unable to map clk base\n");
 		return -ENXIO;
 	}
 
+	map = devm_regmap_init_mmio(dev, clk_base, &clkc_regmap_config);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+
 	/* Populate base address for PLLs */
 	for (i = 0; i < clkc_data->clk_plls_count; i++)
 		clkc_data->clk_plls[i]->base = clk_base;
diff --git a/drivers/clk/meson/gxbb.c b/drivers/clk/meson/gxbb.c
index 6609024eee00..e3faf0a0fdb7 100644
--- a/drivers/clk/meson/gxbb.c
+++ b/drivers/clk/meson/gxbb.c
@@ -19,10 +19,11 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
+#include <linux/init.h>
 #include <linux/of_address.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
-#include <linux/init.h>
+#include <linux/regmap.h>
 
 #include "clkc.h"
 #include "gxbb.h"
@@ -1937,10 +1938,18 @@ static const struct of_device_id clkc_match_table[] = {
 	{},
 };
 
+static const struct regmap_config clkc_regmap_config = {
+	.reg_bits       = 32,
+	.val_bits       = 32,
+	.reg_stride     = 4,
+};
+
 static int gxbb_clkc_probe(struct platform_device *pdev)
 {
 	const struct clkc_data *clkc_data;
+	struct resource *res;
 	void __iomem *clk_base;
+	struct regmap *map;
 	int ret, i;
 	struct device *dev = &pdev->dev;
 
@@ -1948,13 +1957,20 @@ static int gxbb_clkc_probe(struct platform_device *pdev)
 	if (!clkc_data)
 		return -EINVAL;
 
-	/*  Generic clocks and PLLs */
-	clk_base = of_iomap(dev->of_node, 0);
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -EINVAL;
+
+	clk_base = devm_ioremap(dev, res->start, resource_size(res));
 	if (!clk_base) {
 		pr_err("%s: Unable to map clk base\n", __func__);
 		return -ENXIO;
 	}
 
+	map = devm_regmap_init_mmio(dev, clk_base, &clkc_regmap_config);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+
 	/* Populate base address for PLLs */
 	for (i = 0; i < clkc_data->clk_plls_count; i++)
 		clkc_data->clk_plls[i]->base = clk_base;
@@ -1991,17 +2007,14 @@ static int gxbb_clkc_probe(struct platform_device *pdev)
 
 		ret = devm_clk_hw_register(dev,
 					   clkc_data->hw_onecell_data->hws[i]);
-		if (ret)
-			goto iounmap;
+		if (ret) {
+			dev_err(dev, "Clock registration failed\n");
+			return ret;
+		}
 	}
 
-
 	return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
 					   clkc_data->hw_onecell_data);
-
-iounmap:
-	iounmap(clk_base);
-	return ret;
 }
 
 static struct platform_driver gxbb_driver = {
diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
index db017c29a84c..0981e970de3d 100644
--- a/drivers/clk/meson/meson8b.c
+++ b/drivers/clk/meson/meson8b.c
@@ -23,11 +23,12 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
+#include <linux/init.h>
 #include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/reset-controller.h>
 #include <linux/slab.h>
-#include <linux/init.h>
+#include <linux/regmap.h>
 
 #include "clkc.h"
 #include "meson8b.h"
@@ -804,16 +805,27 @@ static const struct reset_control_ops meson8b_clk_reset_ops = {
 	.deassert = meson8b_clk_reset_deassert,
 };
 
+static const struct regmap_config clkc_regmap_config = {
+	.reg_bits       = 32,
+	.val_bits       = 32,
+	.reg_stride     = 4,
+};
+
 static int meson8b_clkc_probe(struct platform_device *pdev)
 {
 	int ret, i;
 	struct clk_hw *parent_hw;
 	struct clk *parent_clk;
 	struct device *dev = &pdev->dev;
+	struct regmap *map;
 
 	if (!clk_base)
 		return -ENXIO;
 
+	map = devm_regmap_init_mmio(dev, clk_base, &clkc_regmap_config);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+
 	/* Populate base address for PLLs */
 	for (i = 0; i < ARRAY_SIZE(meson8b_clk_plls); i++)
 		meson8b_clk_plls[i]->base = clk_base;