[PATCH v2 0/6] Samsung clock providers: convert to the new clk_hw API

[PATCH v2 0/6] Samsung clock providers: convert to the new clk_hw API

[Marek Szyprowski]

Dear All,

Clock providers should use the new struct clk_hw based API, so convert
all Samsung clock providers and their helper functions to the new approach.

Patches are based on top of linux-next from 20170420.

Best regards
Marek Szyprowski
Samsung R&D Institute Poland


Changle log:
v2:
- moved some changes to separate patches as requested by Krzysztof Kozlowski

v1:
- initial version

Marek Szyprowski (6):
  clk: samsung: Remove dead code
  clk: samsung: Add local variable to match it purpose
  clk: samsung: Convert common drivers to the new clk_hw API
  clk: samsung: exynos-audss: Convert to the new clk_hw API
  clk: samsung: exynos-clkout: Convert to the new clk_hw API
  clk: samsung: s5pv210-audss: Convert to the new clk_hw API

 drivers/clk/samsung/clk-cpu.c           | 15 +++---
 drivers/clk/samsung/clk-exynos-audss.c  | 55 ++++++++++----------
 drivers/clk/samsung/clk-exynos-clkout.c | 18 +++----
 drivers/clk/samsung/clk-pll.c           | 14 ++---
 drivers/clk/samsung/clk-pll.h           |  4 --
 drivers/clk/samsung/clk-s3c2410-dclk.c  | 75 ++++++++++++++-------------
 drivers/clk/samsung/clk-s5pv210-audss.c | 50 +++++++++---------
 drivers/clk/samsung/clk.c               | 91 +++++++++++++++------------------
 drivers/clk/samsung/clk.h               |  9 ++--
 9 files changed, 159 insertions(+), 172 deletions(-)

-- 
1.9.1

[PATCH v2 1/6] clk: samsung: Remove dead code

[Marek Szyprowski]

samsung_clk_register_pll2550x() function is not used anymore, so remove its
declaration.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 drivers/clk/samsung/clk-pll.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/clk/samsung/clk-pll.h b/drivers/clk/samsung/clk-pll.h
index a1ca0233cb4b..61eb8abbfd9c 100644
--- a/drivers/clk/samsung/clk-pll.h
+++ b/drivers/clk/samsung/clk-pll.h
@@ -103,8 +103,4 @@ struct samsung_pll_rate_table {
 	unsigned int vsel;
 };
 
-extern struct clk * __init samsung_clk_register_pll2550x(const char *name,
-			const char *pname, const void __iomem *reg_base,
-			const unsigned long offset);
-
 #endif /* __SAMSUNG_CLK_PLL_H */
-- 
1.9.1

[PATCH v2 2/6] clk: samsung: Add local variable to match it purpose

[Marek Szyprowski]

Add new variable to avoid using clk pointer for different purposes across
the exynos_register_cpu_clock() function. This will help in future rewrite
for the new clk_hw API.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 drivers/clk/samsung/clk-cpu.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c
index 8bf7e805fd34..6e1c6007e721 100644
--- a/drivers/clk/samsung/clk-cpu.c
+++ b/drivers/clk/samsung/clk-cpu.c
@@ -410,6 +410,7 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
 {
 	struct exynos_cpuclk *cpuclk;
 	struct clk_init_data init;
+	struct clk *parent_clk;
 	struct clk *clk;
 	int ret = 0;
 
@@ -440,15 +441,15 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
 		goto free_cpuclk;
 	}
 
-	clk = __clk_lookup(parent);
-	if (!clk) {
+	parent_clk = __clk_lookup(parent);
+	if (!parent_clk) {
 		pr_err("%s: could not lookup parent clock %s\n",
 				__func__, parent);
 		ret = -EINVAL;
 		goto free_cpuclk;
 	}
 
-	ret = clk_notifier_register(clk, &cpuclk->clk_nb);
+	ret = clk_notifier_register(parent_clk, &cpuclk->clk_nb);
 	if (ret) {
 		pr_err("%s: failed to register clock notifier for %s\n",
 				__func__, name);
-- 
1.9.1

[PATCH v2 3/6] clk: samsung: Convert common drivers to the new clk_hw API

[Marek Szyprowski]

Clock providers should use the new struct clk_hw based API, so convert
Samsung clock providers and their helper functions to the new approach.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 drivers/clk/samsung/clk-cpu.c          |  8 ++-
 drivers/clk/samsung/clk-pll.c          | 14 +++---
 drivers/clk/samsung/clk-s3c2410-dclk.c | 75 ++++++++++++++--------------
 drivers/clk/samsung/clk.c              | 91 +++++++++++++++-------------------
 drivers/clk/samsung/clk.h              |  9 ++--
 5 files changed, 92 insertions(+), 105 deletions(-)

diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c
index 6e1c6007e721..fbf0154b81a5 100644
--- a/drivers/clk/samsung/clk-cpu.c
+++ b/drivers/clk/samsung/clk-cpu.c
@@ -411,7 +411,6 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
 	struct exynos_cpuclk *cpuclk;
 	struct clk_init_data init;
 	struct clk *parent_clk;
-	struct clk *clk;
 	int ret = 0;
 
 	cpuclk = kzalloc(sizeof(*cpuclk), GFP_KERNEL);
@@ -464,14 +463,13 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
 		goto unregister_clk_nb;
 	}
 
-	clk = clk_register(NULL, &cpuclk->hw);
-	if (IS_ERR(clk)) {
+	ret = clk_hw_register(NULL, &cpuclk->hw);
+	if (ret) {
 		pr_err("%s: could not register cpuclk %s\n", __func__,	name);
-		ret = PTR_ERR(clk);
 		goto free_cpuclk_data;
 	}
 
-	samsung_clk_add_lookup(ctx, clk, lookup_id);
+	samsung_clk_add_lookup(ctx, &cpuclk->hw, lookup_id);
 	return 0;
 
 free_cpuclk_data:
diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c
index 52290894857a..db680575a9bd 100644
--- a/drivers/clk/samsung/clk-pll.c
+++ b/drivers/clk/samsung/clk-pll.c
@@ -1244,7 +1244,6 @@ static void __init _samsung_clk_register_pll(struct samsung_clk_provider *ctx,
 				void __iomem *base)
 {
 	struct samsung_clk_pll *pll;
-	struct clk *clk;
 	struct clk_init_data init;
 	int ret, len;
 
@@ -1376,20 +1375,21 @@ static void __init _samsung_clk_register_pll(struct samsung_clk_provider *ctx,
 	pll->lock_reg = base + pll_clk->lock_offset;
 	pll->con_reg = base + pll_clk->con_offset;
 
-	clk = clk_register(NULL, &pll->hw);
-	if (IS_ERR(clk)) {
-		pr_err("%s: failed to register pll clock %s : %ld\n",
-			__func__, pll_clk->name, PTR_ERR(clk));
+	ret = clk_hw_register(NULL, &pll->hw);
+	if (ret) {
+		pr_err("%s: failed to register pll clock %s : %d\n",
+			__func__, pll_clk->name, ret);
 		kfree(pll);
 		return;
 	}
 
-	samsung_clk_add_lookup(ctx, clk, pll_clk->id);
+	samsung_clk_add_lookup(ctx, &pll->hw, pll_clk->id);
 
 	if (!pll_clk->alias)
 		return;
 
-	ret = clk_register_clkdev(clk, pll_clk->alias, pll_clk->dev_name);
+	ret = clk_hw_register_clkdev(&pll->hw, pll_clk->alias,
+				     pll_clk->dev_name);
 	if (ret)
 		pr_err("%s: failed to register lookup for %s : %d",
 			__func__, pll_clk->name, ret);
diff --git a/drivers/clk/samsung/clk-s3c2410-dclk.c b/drivers/clk/samsung/clk-s3c2410-dclk.c
index ae9a595c72d0..077df3e539a7 100644
--- a/drivers/clk/samsung/clk-s3c2410-dclk.c
+++ b/drivers/clk/samsung/clk-s3c2410-dclk.c
@@ -90,13 +90,13 @@ static int s3c24xx_clkout_set_parent(struct clk_hw *hw, u8 index)
 	.determine_rate = __clk_mux_determine_rate,
 };
 
-static struct clk *s3c24xx_register_clkout(struct device *dev, const char *name,
-		const char **parent_names, u8 num_parents,
+static struct clk_hw *s3c24xx_register_clkout(struct device *dev,
+		const char *name, const char **parent_names, u8 num_parents,
 		u8 shift, u32 mask)
 {
 	struct s3c24xx_clkout *clkout;
-	struct clk *clk;
 	struct clk_init_data init;
+	int ret;
 
 	/* allocate the clkout */
 	clkout = kzalloc(sizeof(*clkout), GFP_KERNEL);
@@ -113,9 +113,11 @@ static struct clk *s3c24xx_register_clkout(struct device *dev, const char *name,
 	clkout->mask = mask;
 	clkout->hw.init = &init;
 
-	clk = clk_register(dev, &clkout->hw);
+	ret = clk_hw_register(dev, &clkout->hw);
+	if (ret)
+		return ERR_PTR(ret);
 
-	return clk;
+	return &clkout->hw;
 }
 
 /*
@@ -125,11 +127,12 @@ static struct clk *s3c24xx_register_clkout(struct device *dev, const char *name,
 struct s3c24xx_dclk {
 	struct device *dev;
 	void __iomem *base;
-	struct clk_onecell_data clk_data;
 	struct notifier_block dclk0_div_change_nb;
 	struct notifier_block dclk1_div_change_nb;
 	spinlock_t dclk_lock;
 	unsigned long reg_save;
+	/* clk_data must be the last entry in the structure */
+	struct clk_hw_onecell_data clk_data;
 };
 
 #define to_s3c24xx_dclk0(x) \
@@ -240,28 +243,23 @@ static int s3c24xx_dclk_probe(struct platform_device *pdev)
 {
 	struct s3c24xx_dclk *s3c24xx_dclk;
 	struct resource *mem;
-	struct clk **clk_table;
 	struct s3c24xx_dclk_drv_data *dclk_variant;
+	struct clk_hw **clk_table;
 	int ret, i;
 
-	s3c24xx_dclk = devm_kzalloc(&pdev->dev, sizeof(*s3c24xx_dclk),
-				    GFP_KERNEL);
+	s3c24xx_dclk = devm_kzalloc(&pdev->dev, sizeof(*s3c24xx_dclk) +
+			    sizeof(*s3c24xx_dclk->clk_data.hws) * DCLK_MAX_CLKS,
+			    GFP_KERNEL);
 	if (!s3c24xx_dclk)
 		return -ENOMEM;
 
+	clk_table = s3c24xx_dclk->clk_data.hws;
+
 	s3c24xx_dclk->dev = &pdev->dev;
+	s3c24xx_dclk->clk_data.num = DCLK_MAX_CLKS;
 	platform_set_drvdata(pdev, s3c24xx_dclk);
 	spin_lock_init(&s3c24xx_dclk->dclk_lock);
 
-	clk_table = devm_kzalloc(&pdev->dev,
-				 sizeof(struct clk *) * DCLK_MAX_CLKS,
-				 GFP_KERNEL);
-	if (!clk_table)
-		return -ENOMEM;
-
-	s3c24xx_dclk->clk_data.clks = clk_table;
-	s3c24xx_dclk->clk_data.clk_num = DCLK_MAX_CLKS;
-
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	s3c24xx_dclk->base = devm_ioremap_resource(&pdev->dev, mem);
 	if (IS_ERR(s3c24xx_dclk->base))
@@ -271,29 +269,29 @@ static int s3c24xx_dclk_probe(struct platform_device *pdev)
 				platform_get_device_id(pdev)->driver_data;
 
 
-	clk_table[MUX_DCLK0] = clk_register_mux(&pdev->dev, "mux_dclk0",
+	clk_table[MUX_DCLK0] = clk_hw_register_mux(&pdev->dev, "mux_dclk0",
 				dclk_variant->mux_parent_names,
 				dclk_variant->mux_num_parents, 0,
 				s3c24xx_dclk->base, 1, 1, 0,
 				&s3c24xx_dclk->dclk_lock);
-	clk_table[MUX_DCLK1] = clk_register_mux(&pdev->dev, "mux_dclk1",
+	clk_table[MUX_DCLK1] = clk_hw_register_mux(&pdev->dev, "mux_dclk1",
 				dclk_variant->mux_parent_names,
 				dclk_variant->mux_num_parents, 0,
 				s3c24xx_dclk->base, 17, 1, 0,
 				&s3c24xx_dclk->dclk_lock);
 
-	clk_table[DIV_DCLK0] = clk_register_divider(&pdev->dev, "div_dclk0",
+	clk_table[DIV_DCLK0] = clk_hw_register_divider(&pdev->dev, "div_dclk0",
 				"mux_dclk0", 0, s3c24xx_dclk->base,
 				4, 4, 0, &s3c24xx_dclk->dclk_lock);
-	clk_table[DIV_DCLK1] = clk_register_divider(&pdev->dev, "div_dclk1",
+	clk_table[DIV_DCLK1] = clk_hw_register_divider(&pdev->dev, "div_dclk1",
 				"mux_dclk1", 0, s3c24xx_dclk->base,
 				20, 4, 0, &s3c24xx_dclk->dclk_lock);
 
-	clk_table[GATE_DCLK0] = clk_register_gate(&pdev->dev, "gate_dclk0",
+	clk_table[GATE_DCLK0] = clk_hw_register_gate(&pdev->dev, "gate_dclk0",
 				"div_dclk0", CLK_SET_RATE_PARENT,
 				s3c24xx_dclk->base, 0, 0,
 				&s3c24xx_dclk->dclk_lock);
-	clk_table[GATE_DCLK1] = clk_register_gate(&pdev->dev, "gate_dclk1",
+	clk_table[GATE_DCLK1] = clk_hw_register_gate(&pdev->dev, "gate_dclk1",
 				"div_dclk1", CLK_SET_RATE_PARENT,
 				s3c24xx_dclk->base, 16, 0,
 				&s3c24xx_dclk->dclk_lock);
@@ -312,15 +310,16 @@ static int s3c24xx_dclk_probe(struct platform_device *pdev)
 			goto err_clk_register;
 		}
 
-	ret = clk_register_clkdev(clk_table[MUX_DCLK0], "dclk0", NULL);
+	ret = clk_hw_register_clkdev(clk_table[MUX_DCLK0], "dclk0", NULL);
 	if (!ret)
-		ret = clk_register_clkdev(clk_table[MUX_DCLK1], "dclk1", NULL);
+		ret = clk_hw_register_clkdev(clk_table[MUX_DCLK1], "dclk1",
+					     NULL);
 	if (!ret)
-		ret = clk_register_clkdev(clk_table[MUX_CLKOUT0],
-					  "clkout0", NULL);
+		ret = clk_hw_register_clkdev(clk_table[MUX_CLKOUT0],
+					     "clkout0", NULL);
 	if (!ret)
-		ret = clk_register_clkdev(clk_table[MUX_CLKOUT1],
-					  "clkout1", NULL);
+		ret = clk_hw_register_clkdev(clk_table[MUX_CLKOUT1],
+					     "clkout1", NULL);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register aliases, %d\n", ret);
 		goto err_clk_register;
@@ -332,12 +331,12 @@ static int s3c24xx_dclk_probe(struct platform_device *pdev)
 	s3c24xx_dclk->dclk1_div_change_nb.notifier_call =
 						s3c24xx_dclk1_div_notify;
 
-	ret = clk_notifier_register(clk_table[DIV_DCLK0],
+	ret = clk_notifier_register(clk_table[DIV_DCLK0]->clk,
 				    &s3c24xx_dclk->dclk0_div_change_nb);
 	if (ret)
 		goto err_clk_register;
 
-	ret = clk_notifier_register(clk_table[DIV_DCLK1],
+	ret = clk_notifier_register(clk_table[DIV_DCLK1]->clk,
 				    &s3c24xx_dclk->dclk1_div_change_nb);
 	if (ret)
 		goto err_dclk_notify;
@@ -345,12 +344,12 @@ static int s3c24xx_dclk_probe(struct platform_device *pdev)
 	return 0;
 
 err_dclk_notify:
-	clk_notifier_unregister(clk_table[DIV_DCLK0],
+	clk_notifier_unregister(clk_table[DIV_DCLK0]->clk,
 				&s3c24xx_dclk->dclk0_div_change_nb);
 err_clk_register:
 	for (i = 0; i < DCLK_MAX_CLKS; i++)
 		if (clk_table[i] && !IS_ERR(clk_table[i]))
-			clk_unregister(clk_table[i]);
+			clk_hw_unregister(clk_table[i]);
 
 	return ret;
 }
@@ -358,16 +357,16 @@ static int s3c24xx_dclk_probe(struct platform_device *pdev)
 static int s3c24xx_dclk_remove(struct platform_device *pdev)
 {
 	struct s3c24xx_dclk *s3c24xx_dclk = platform_get_drvdata(pdev);
-	struct clk **clk_table = s3c24xx_dclk->clk_data.clks;
+	struct clk_hw **clk_table = s3c24xx_dclk->clk_data.hws;
 	int i;
 
-	clk_notifier_unregister(clk_table[DIV_DCLK1],
+	clk_notifier_unregister(clk_table[DIV_DCLK1]->clk,
 				&s3c24xx_dclk->dclk1_div_change_nb);
-	clk_notifier_unregister(clk_table[DIV_DCLK0],
+	clk_notifier_unregister(clk_table[DIV_DCLK0]->clk,
 				&s3c24xx_dclk->dclk0_div_change_nb);
 
 	for (i = 0; i < DCLK_MAX_CLKS; i++)
-		clk_unregister(clk_table[i]);
+		clk_hw_unregister(clk_table[i]);
 
 	return 0;
 }
diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c
index b7d87d6db9dc..7ce0fa86c5ff 100644
--- a/drivers/clk/samsung/clk.c
+++ b/drivers/clk/samsung/clk.c
@@ -60,23 +60,18 @@ struct samsung_clk_provider *__init samsung_clk_init(struct device_node *np,
 			void __iomem *base, unsigned long nr_clks)
 {
 	struct samsung_clk_provider *ctx;
-	struct clk **clk_table;
 	int i;
 
-	ctx = kzalloc(sizeof(struct samsung_clk_provider), GFP_KERNEL);
+	ctx = kzalloc(sizeof(struct samsung_clk_provider) +
+		      sizeof(*ctx->clk_data.hws) * nr_clks, GFP_KERNEL);
 	if (!ctx)
 		panic("could not allocate clock provider context.\n");
 
-	clk_table = kcalloc(nr_clks, sizeof(struct clk *), GFP_KERNEL);
-	if (!clk_table)
-		panic("could not allocate clock lookup table\n");
-
 	for (i = 0; i < nr_clks; ++i)
-		clk_table[i] = ERR_PTR(-ENOENT);
+		ctx->clk_data.hws[i] = ERR_PTR(-ENOENT);
 
 	ctx->reg_base = base;
-	ctx->clk_data.clks = clk_table;
-	ctx->clk_data.clk_num = nr_clks;
+	ctx->clk_data.num = nr_clks;
 	spin_lock_init(&ctx->lock);
 
 	return ctx;
@@ -86,18 +81,18 @@ void __init samsung_clk_of_add_provider(struct device_node *np,
 				struct samsung_clk_provider *ctx)
 {
 	if (np) {
-		if (of_clk_add_provider(np, of_clk_src_onecell_get,
+		if (of_clk_add_hw_provider(np, of_clk_hw_onecell_get,
 					&ctx->clk_data))
 			panic("could not register clk provider\n");
 	}
 }
 
 /* add a clock instance to the clock lookup table used for dt based lookup */
-void samsung_clk_add_lookup(struct samsung_clk_provider *ctx, struct clk *clk,
-				unsigned int id)
+void samsung_clk_add_lookup(struct samsung_clk_provider *ctx,
+			    struct clk_hw *clk_hw, unsigned int id)
 {
-	if (ctx->clk_data.clks && id)
-		ctx->clk_data.clks[id] = clk;
+	if (id)
+		ctx->clk_data.hws[id] = clk_hw;
 }
 
 /* register a list of aliases */
@@ -105,14 +100,9 @@ void __init samsung_clk_register_alias(struct samsung_clk_provider *ctx,
 				const struct samsung_clock_alias *list,
 				unsigned int nr_clk)
 {
-	struct clk *clk;
+	struct clk_hw *clk_hw;
 	unsigned int idx, ret;
 
-	if (!ctx->clk_data.clks) {
-		pr_err("%s: clock table missing\n", __func__);
-		return;
-	}
-
 	for (idx = 0; idx < nr_clk; idx++, list++) {
 		if (!list->id) {
 			pr_err("%s: clock id missing for index %d\n", __func__,
@@ -120,14 +110,15 @@ void __init samsung_clk_register_alias(struct samsung_clk_provider *ctx,
 			continue;
 		}
 
-		clk = ctx->clk_data.clks[list->id];
-		if (!clk) {
+		clk_hw = ctx->clk_data.hws[list->id];
+		if (!clk_hw) {
 			pr_err("%s: failed to find clock %d\n", __func__,
 				list->id);
 			continue;
 		}
 
-		ret = clk_register_clkdev(clk, list->alias, list->dev_name);
+		ret = clk_hw_register_clkdev(clk_hw, list->alias,
+					     list->dev_name);
 		if (ret)
 			pr_err("%s: failed to register lookup %s\n",
 					__func__, list->alias);
@@ -139,25 +130,25 @@ void __init samsung_clk_register_fixed_rate(struct samsung_clk_provider *ctx,
 		const struct samsung_fixed_rate_clock *list,
 		unsigned int nr_clk)
 {
-	struct clk *clk;
+	struct clk_hw *clk_hw;
 	unsigned int idx, ret;
 
 	for (idx = 0; idx < nr_clk; idx++, list++) {
-		clk = clk_register_fixed_rate(NULL, list->name,
+		clk_hw = clk_hw_register_fixed_rate(NULL, list->name,
 			list->parent_name, list->flags, list->fixed_rate);
-		if (IS_ERR(clk)) {
+		if (IS_ERR(clk_hw)) {
 			pr_err("%s: failed to register clock %s\n", __func__,
 				list->name);
 			continue;
 		}
 
-		samsung_clk_add_lookup(ctx, clk, list->id);
+		samsung_clk_add_lookup(ctx, clk_hw, list->id);
 
 		/*
 		 * Unconditionally add a clock lookup for the fixed rate clocks.
 		 * There are not many of these on any of Samsung platforms.
 		 */
-		ret = clk_register_clkdev(clk, list->name, NULL);
+		ret = clk_hw_register_clkdev(clk_hw, list->name, NULL);
 		if (ret)
 			pr_err("%s: failed to register clock lookup for %s",
 				__func__, list->name);
@@ -168,19 +159,19 @@ void __init samsung_clk_register_fixed_rate(struct samsung_clk_provider *ctx,
 void __init samsung_clk_register_fixed_factor(struct samsung_clk_provider *ctx,
 		const struct samsung_fixed_factor_clock *list, unsigned int nr_clk)
 {
-	struct clk *clk;
+	struct clk_hw *clk_hw;
 	unsigned int idx;
 
 	for (idx = 0; idx < nr_clk; idx++, list++) {
-		clk = clk_register_fixed_factor(NULL, list->name,
+		clk_hw = clk_hw_register_fixed_factor(NULL, list->name,
 			list->parent_name, list->flags, list->mult, list->div);
-		if (IS_ERR(clk)) {
+		if (IS_ERR(clk_hw)) {
 			pr_err("%s: failed to register clock %s\n", __func__,
 				list->name);
 			continue;
 		}
 
-		samsung_clk_add_lookup(ctx, clk, list->id);
+		samsung_clk_add_lookup(ctx, clk_hw, list->id);
 	}
 }
 
@@ -189,25 +180,25 @@ void __init samsung_clk_register_mux(struct samsung_clk_provider *ctx,
 				const struct samsung_mux_clock *list,
 				unsigned int nr_clk)
 {
-	struct clk *clk;
+	struct clk_hw *clk_hw;
 	unsigned int idx, ret;
 
 	for (idx = 0; idx < nr_clk; idx++, list++) {
-		clk = clk_register_mux(NULL, list->name, list->parent_names,
-			list->num_parents, list->flags,
+		clk_hw = clk_hw_register_mux(NULL, list->name,
+			list->parent_names, list->num_parents, list->flags,
 			ctx->reg_base + list->offset,
 			list->shift, list->width, list->mux_flags, &ctx->lock);
-		if (IS_ERR(clk)) {
+		if (IS_ERR(clk_hw)) {
 			pr_err("%s: failed to register clock %s\n", __func__,
 				list->name);
 			continue;
 		}
 
-		samsung_clk_add_lookup(ctx, clk, list->id);
+		samsung_clk_add_lookup(ctx, clk_hw, list->id);
 
 		/* register a clock lookup only if a clock alias is specified */
 		if (list->alias) {
-			ret = clk_register_clkdev(clk, list->alias,
+			ret = clk_hw_register_clkdev(clk_hw, list->alias,
 						list->dev_name);
 			if (ret)
 				pr_err("%s: failed to register lookup %s\n",
@@ -221,32 +212,32 @@ void __init samsung_clk_register_div(struct samsung_clk_provider *ctx,
 				const struct samsung_div_clock *list,
 				unsigned int nr_clk)
 {
-	struct clk *clk;
+	struct clk_hw *clk_hw;
 	unsigned int idx, ret;
 
 	for (idx = 0; idx < nr_clk; idx++, list++) {
 		if (list->table)
-			clk = clk_register_divider_table(NULL, list->name,
-				list->parent_name, list->flags,
+			clk_hw = clk_hw_register_divider_table(NULL,
+				list->name, list->parent_name, list->flags,
 				ctx->reg_base + list->offset,
 				list->shift, list->width, list->div_flags,
 				list->table, &ctx->lock);
 		else
-			clk = clk_register_divider(NULL, list->name,
+			clk_hw = clk_hw_register_divider(NULL, list->name,
 				list->parent_name, list->flags,
 				ctx->reg_base + list->offset, list->shift,
 				list->width, list->div_flags, &ctx->lock);
-		if (IS_ERR(clk)) {
+		if (IS_ERR(clk_hw)) {
 			pr_err("%s: failed to register clock %s\n", __func__,
 				list->name);
 			continue;
 		}
 
-		samsung_clk_add_lookup(ctx, clk, list->id);
+		samsung_clk_add_lookup(ctx, clk_hw, list->id);
 
 		/* register a clock lookup only if a clock alias is specified */
 		if (list->alias) {
-			ret = clk_register_clkdev(clk, list->alias,
+			ret = clk_hw_register_clkdev(clk_hw, list->alias,
 						list->dev_name);
 			if (ret)
 				pr_err("%s: failed to register lookup %s\n",
@@ -260,14 +251,14 @@ void __init samsung_clk_register_gate(struct samsung_clk_provider *ctx,
 				const struct samsung_gate_clock *list,
 				unsigned int nr_clk)
 {
-	struct clk *clk;
+	struct clk_hw *clk_hw;
 	unsigned int idx, ret;
 
 	for (idx = 0; idx < nr_clk; idx++, list++) {
-		clk = clk_register_gate(NULL, list->name, list->parent_name,
+		clk_hw = clk_hw_register_gate(NULL, list->name, list->parent_name,
 				list->flags, ctx->reg_base + list->offset,
 				list->bit_idx, list->gate_flags, &ctx->lock);
-		if (IS_ERR(clk)) {
+		if (IS_ERR(clk_hw)) {
 			pr_err("%s: failed to register clock %s\n", __func__,
 				list->name);
 			continue;
@@ -275,14 +266,14 @@ void __init samsung_clk_register_gate(struct samsung_clk_provider *ctx,
 
 		/* register a clock lookup only if a clock alias is specified */
 		if (list->alias) {
-			ret = clk_register_clkdev(clk, list->alias,
+			ret = clk_hw_register_clkdev(clk_hw, list->alias,
 							list->dev_name);
 			if (ret)
 				pr_err("%s: failed to register lookup %s\n",
 					__func__, list->alias);
 		}
 
-		samsung_clk_add_lookup(ctx, clk, list->id);
+		samsung_clk_add_lookup(ctx, clk_hw, list->id);
 	}
 }
 
diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h
index da3bdebabf1e..b8ca0dd3a38b 100644
--- a/drivers/clk/samsung/clk.h
+++ b/drivers/clk/samsung/clk.h
@@ -16,18 +16,17 @@
 #include <linux/clk-provider.h>
 #include "clk-pll.h"
 
-struct clk;
-
 /**
  * struct samsung_clk_provider: information about clock provider
  * @reg_base: virtual address for the register base.
- * @clk_data: holds clock related data like clk* and number of clocks.
  * @lock: maintains exclusion between callbacks for a given clock-provider.
+ * @clk_data: holds clock related data like clk_hw* and number of clocks.
  */
 struct samsung_clk_provider {
 	void __iomem *reg_base;
-	struct clk_onecell_data clk_data;
 	spinlock_t lock;
+	/* clk_data must be the last entry due to variable lenght 'hws' array */
+	struct clk_hw_onecell_data clk_data;
 };
 
 /**
@@ -367,7 +366,7 @@ extern void __init samsung_clk_of_register_fixed_ext(
 			const struct of_device_id *clk_matches);
 
 extern void samsung_clk_add_lookup(struct samsung_clk_provider *ctx,
-			struct clk *clk, unsigned int id);
+			struct clk_hw *clk_hw, unsigned int id);
 
 extern void __init samsung_clk_register_alias(struct samsung_clk_provider *ctx,
 			const struct samsung_clock_alias *list,
-- 
1.9.1

[PATCH v2 4/6] clk: samsung: exynos-audss: Convert to the new clk_hw API

[Marek Szyprowski]

Clock providers should use the new struct clk_hw based API, so convert
Exynos Audio Subsystem clock provider to the new approach.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 drivers/clk/samsung/clk-exynos-audss.c | 55 +++++++++++++++++-----------------
 1 file changed, 28 insertions(+), 27 deletions(-)

diff --git a/drivers/clk/samsung/clk-exynos-audss.c b/drivers/clk/samsung/clk-exynos-audss.c
index cb7df358a27d..e8f89529da07 100644
--- a/drivers/clk/samsung/clk-exynos-audss.c
+++ b/drivers/clk/samsung/clk-exynos-audss.c
@@ -22,9 +22,8 @@
 #include <dt-bindings/clock/exynos-audss-clk.h>
 
 static DEFINE_SPINLOCK(lock);
-static struct clk **clk_table;
 static void __iomem *reg_base;
-static struct clk_onecell_data clk_data;
+static struct clk_hw_onecell_data *clk_data;
 /*
  * On Exynos5420 this will be a clock which has to be enabled before any
  * access to audss registers. Typically a child of EPLL.
@@ -110,18 +109,18 @@ static void exynos_audss_clk_teardown(void)
 	int i;
 
 	for (i = EXYNOS_MOUT_AUDSS; i < EXYNOS_DOUT_SRP; i++) {
-		if (!IS_ERR(clk_table[i]))
-			clk_unregister_mux(clk_table[i]);
+		if (!IS_ERR(clk_data->hws[i]))
+			clk_hw_unregister_mux(clk_data->hws[i]);
 	}
 
 	for (; i < EXYNOS_SRP_CLK; i++) {
-		if (!IS_ERR(clk_table[i]))
-			clk_unregister_divider(clk_table[i]);
+		if (!IS_ERR(clk_data->hws[i]))
+			clk_hw_unregister_divider(clk_data->hws[i]);
 	}
 
-	for (; i < clk_data.clk_num; i++) {
-		if (!IS_ERR(clk_table[i]))
-			clk_unregister_gate(clk_table[i]);
+	for (; i < clk_data->num; i++) {
+		if (!IS_ERR(clk_data->hws[i]))
+			clk_hw_unregister_gate(clk_data->hws[i]);
 	}
 }
 
@@ -133,6 +132,7 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 	const char *sclk_pcm_p = "sclk_pcm0";
 	struct clk *pll_ref, *pll_in, *cdclk, *sclk_audio, *sclk_pcm_in;
 	const struct exynos_audss_clk_drvdata *variant;
+	struct clk_hw **clk_table;
 	struct resource *res;
 	int i, ret = 0;
 
@@ -149,14 +149,15 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 
 	epll = ERR_PTR(-ENODEV);
 
-	clk_table = devm_kzalloc(&pdev->dev,
-				sizeof(struct clk *) * EXYNOS_AUDSS_MAX_CLKS,
+	clk_data = devm_kzalloc(&pdev->dev,
+				sizeof(*clk_data) +
+				sizeof(*clk_data->hws) * EXYNOS_AUDSS_MAX_CLKS,
 				GFP_KERNEL);
-	if (!clk_table)
+	if (!clk_data)
 		return -ENOMEM;
 
-	clk_data.clks = clk_table;
-	clk_data.clk_num = variant->num_clks;
+	clk_data->num = variant->num_clks;
+	clk_table = clk_data->hws;
 
 	pll_ref = devm_clk_get(&pdev->dev, "pll_ref");
 	pll_in = devm_clk_get(&pdev->dev, "pll_in");
@@ -176,7 +177,7 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 			}
 		}
 	}
-	clk_table[EXYNOS_MOUT_AUDSS] = clk_register_mux(NULL, "mout_audss",
+	clk_table[EXYNOS_MOUT_AUDSS] = clk_hw_register_mux(NULL, "mout_audss",
 				mout_audss_p, ARRAY_SIZE(mout_audss_p),
 				CLK_SET_RATE_NO_REPARENT,
 				reg_base + ASS_CLK_SRC, 0, 1, 0, &lock);
@@ -187,53 +188,53 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 		mout_i2s_p[1] = __clk_get_name(cdclk);
 	if (!IS_ERR(sclk_audio))
 		mout_i2s_p[2] = __clk_get_name(sclk_audio);
-	clk_table[EXYNOS_MOUT_I2S] = clk_register_mux(NULL, "mout_i2s",
+	clk_table[EXYNOS_MOUT_I2S] = clk_hw_register_mux(NULL, "mout_i2s",
 				mout_i2s_p, ARRAY_SIZE(mout_i2s_p),
 				CLK_SET_RATE_NO_REPARENT,
 				reg_base + ASS_CLK_SRC, 2, 2, 0, &lock);
 
-	clk_table[EXYNOS_DOUT_SRP] = clk_register_divider(NULL, "dout_srp",
+	clk_table[EXYNOS_DOUT_SRP] = clk_hw_register_divider(NULL, "dout_srp",
 				"mout_audss", 0, reg_base + ASS_CLK_DIV, 0, 4,
 				0, &lock);
 
-	clk_table[EXYNOS_DOUT_AUD_BUS] = clk_register_divider(NULL,
+	clk_table[EXYNOS_DOUT_AUD_BUS] = clk_hw_register_divider(NULL,
 				"dout_aud_bus", "dout_srp", 0,
 				reg_base + ASS_CLK_DIV, 4, 4, 0, &lock);
 
-	clk_table[EXYNOS_DOUT_I2S] = clk_register_divider(NULL, "dout_i2s",
+	clk_table[EXYNOS_DOUT_I2S] = clk_hw_register_divider(NULL, "dout_i2s",
 				"mout_i2s", 0, reg_base + ASS_CLK_DIV, 8, 4, 0,
 				&lock);
 
-	clk_table[EXYNOS_SRP_CLK] = clk_register_gate(NULL, "srp_clk",
+	clk_table[EXYNOS_SRP_CLK] = clk_hw_register_gate(NULL, "srp_clk",
 				"dout_srp", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 0, 0, &lock);
 
-	clk_table[EXYNOS_I2S_BUS] = clk_register_gate(NULL, "i2s_bus",
+	clk_table[EXYNOS_I2S_BUS] = clk_hw_register_gate(NULL, "i2s_bus",
 				"dout_aud_bus", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 2, 0, &lock);
 
-	clk_table[EXYNOS_SCLK_I2S] = clk_register_gate(NULL, "sclk_i2s",
+	clk_table[EXYNOS_SCLK_I2S] = clk_hw_register_gate(NULL, "sclk_i2s",
 				"dout_i2s", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 3, 0, &lock);
 
-	clk_table[EXYNOS_PCM_BUS] = clk_register_gate(NULL, "pcm_bus",
+	clk_table[EXYNOS_PCM_BUS] = clk_hw_register_gate(NULL, "pcm_bus",
 				 "sclk_pcm", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 4, 0, &lock);
 
 	sclk_pcm_in = devm_clk_get(&pdev->dev, "sclk_pcm_in");
 	if (!IS_ERR(sclk_pcm_in))
 		sclk_pcm_p = __clk_get_name(sclk_pcm_in);
-	clk_table[EXYNOS_SCLK_PCM] = clk_register_gate(NULL, "sclk_pcm",
+	clk_table[EXYNOS_SCLK_PCM] = clk_hw_register_gate(NULL, "sclk_pcm",
 				sclk_pcm_p, CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 5, 0, &lock);
 
 	if (variant->has_adma_clk) {
-		clk_table[EXYNOS_ADMA] = clk_register_gate(NULL, "adma",
+		clk_table[EXYNOS_ADMA] = clk_hw_register_gate(NULL, "adma",
 				"dout_srp", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 9, 0, &lock);
 	}
 
-	for (i = 0; i < clk_data.clk_num; i++) {
+	for (i = 0; i < clk_data->num; i++) {
 		if (IS_ERR(clk_table[i])) {
 			dev_err(&pdev->dev, "failed to register clock %d\n", i);
 			ret = PTR_ERR(clk_table[i]);
@@ -241,7 +242,7 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 		}
 	}
 
-	ret = of_clk_add_provider(pdev->dev.of_node, of_clk_src_onecell_get,
+	ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get,
 					&clk_data);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add clock provider\n");
-- 
1.9.1

[PATCH v2 5/6] clk: samsung: exynos-clkout: Convert to the new clk_hw API

[Marek Szyprowski]

Clock providers should use the new struct clk_hw based API, so convert
Exynos CLKOUT clock provider to the new approach.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 drivers/clk/samsung/clk-exynos-clkout.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/clk/samsung/clk-exynos-clkout.c b/drivers/clk/samsung/clk-exynos-clkout.c
index 6c6afb87b4ce..a21aea062bae 100644
--- a/drivers/clk/samsung/clk-exynos-clkout.c
+++ b/drivers/clk/samsung/clk-exynos-clkout.c
@@ -29,10 +29,9 @@ struct exynos_clkout {
 	struct clk_gate gate;
 	struct clk_mux mux;
 	spinlock_t slock;
-	struct clk_onecell_data data;
-	struct clk *clk_table[EXYNOS_CLKOUT_NR_CLKS];
 	void __iomem *reg;
 	u32 pmu_debug_save;
+	struct clk_hw_onecell_data data;
 };
 
 static struct exynos_clkout *clkout;
@@ -62,7 +61,9 @@ static void __init exynos_clkout_init(struct device_node *node, u32 mux_mask)
 	int ret;
 	int i;
 
-	clkout = kzalloc(sizeof(*clkout), GFP_KERNEL);
+	clkout = kzalloc(sizeof(*clkout) +
+			 sizeof(*clkout->data.hws) * EXYNOS_CLKOUT_NR_CLKS,
+			 GFP_KERNEL);
 	if (!clkout)
 		return;
 
@@ -100,17 +101,16 @@ static void __init exynos_clkout_init(struct device_node *node, u32 mux_mask)
 	clkout->mux.shift = EXYNOS_CLKOUT_MUX_SHIFT;
 	clkout->mux.lock = &clkout->slock;
 
-	clkout->clk_table[0] = clk_register_composite(NULL, "clkout",
+	clkout->data.hws[0] = clk_hw_register_composite(NULL, "clkout",
 				parent_names, parent_count, &clkout->mux.hw,
 				&clk_mux_ops, NULL, NULL, &clkout->gate.hw,
 				&clk_gate_ops, CLK_SET_RATE_PARENT
 				| CLK_SET_RATE_NO_REPARENT);
-	if (IS_ERR(clkout->clk_table[0]))
+	if (IS_ERR(clkout->data.hws[0]))
 		goto err_unmap;
 
-	clkout->data.clks = clkout->clk_table;
-	clkout->data.clk_num = EXYNOS_CLKOUT_NR_CLKS;
-	ret = of_clk_add_provider(node, of_clk_src_onecell_get, &clkout->data);
+	clkout->data.num = EXYNOS_CLKOUT_NR_CLKS;
+	ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, &clkout->data);
 	if (ret)
 		goto err_clk_unreg;
 
@@ -119,7 +119,7 @@ static void __init exynos_clkout_init(struct device_node *node, u32 mux_mask)
 	return;
 
 err_clk_unreg:
-	clk_unregister(clkout->clk_table[0]);
+	clk_hw_unregister(clkout->data.hws[0]);
 err_unmap:
 	iounmap(clkout->reg);
 clks_put:
-- 
1.9.1

[PATCH v2 6/6] clk: samsung: s5pv210-audss: Convert to the new clk_hw API

[Marek Szyprowski]

Clock providers should use the new struct clk_hw based API, so convert
Samsung S5PV210 Audio Subsystem clock provider to the new approach.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 drivers/clk/samsung/clk-s5pv210-audss.c | 50 +++++++++++++++++----------------
 1 file changed, 26 insertions(+), 24 deletions(-)

diff --git a/drivers/clk/samsung/clk-s5pv210-audss.c b/drivers/clk/samsung/clk-s5pv210-audss.c
index c66ed2d1450e..e12f5b81834f 100644
--- a/drivers/clk/samsung/clk-s5pv210-audss.c
+++ b/drivers/clk/samsung/clk-s5pv210-audss.c
@@ -24,9 +24,8 @@
 #include <dt-bindings/clock/s5pv210-audss.h>
 
 static DEFINE_SPINLOCK(lock);
-static struct clk **clk_table;
 static void __iomem *reg_base;
-static struct clk_onecell_data clk_data;
+static struct clk_hw_onecell_data *clk_data;
 
 #define ASS_CLK_SRC 0x0
 #define ASS_CLK_DIV 0x4
@@ -71,6 +70,7 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 	const char *mout_audss_p[2];
 	const char *mout_i2s_p[3];
 	const char *hclk_p;
+	struct clk_hw **clk_table;
 	struct clk *hclk, *pll_ref, *pll_in, *cdclk, *sclk_audio;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -80,14 +80,16 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 		return PTR_ERR(reg_base);
 	}
 
-	clk_table = devm_kzalloc(&pdev->dev,
-				sizeof(struct clk *) * AUDSS_MAX_CLKS,
+	clk_data = devm_kzalloc(&pdev->dev,
+				sizeof(*clk_data) +
+				sizeof(*clk_data->hws) * AUDSS_MAX_CLKS,
 				GFP_KERNEL);
-	if (!clk_table)
+
+	if (!clk_data)
 		return -ENOMEM;
 
-	clk_data.clks = clk_table;
-	clk_data.clk_num = AUDSS_MAX_CLKS;
+	clk_data->num = AUDSS_MAX_CLKS;
+	clk_table = clk_data->hws;
 
 	hclk = devm_clk_get(&pdev->dev, "hclk");
 	if (IS_ERR(hclk)) {
@@ -116,7 +118,7 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 	else
 		mout_audss_p[0] = "xxti";
 	mout_audss_p[1] = __clk_get_name(pll_in);
-	clk_table[CLK_MOUT_AUDSS] = clk_register_mux(NULL, "mout_audss",
+	clk_table[CLK_MOUT_AUDSS] = clk_hw_register_mux(NULL, "mout_audss",
 				mout_audss_p, ARRAY_SIZE(mout_audss_p),
 				CLK_SET_RATE_NO_REPARENT,
 				reg_base + ASS_CLK_SRC, 0, 1, 0, &lock);
@@ -127,44 +129,44 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 	else
 		mout_i2s_p[1] = "iiscdclk0";
 	mout_i2s_p[2] = __clk_get_name(sclk_audio);
-	clk_table[CLK_MOUT_I2S_A] = clk_register_mux(NULL, "mout_i2s_audss",
+	clk_table[CLK_MOUT_I2S_A] = clk_hw_register_mux(NULL, "mout_i2s_audss",
 				mout_i2s_p, ARRAY_SIZE(mout_i2s_p),
 				CLK_SET_RATE_NO_REPARENT,
 				reg_base + ASS_CLK_SRC, 2, 2, 0, &lock);
 
-	clk_table[CLK_DOUT_AUD_BUS] = clk_register_divider(NULL,
+	clk_table[CLK_DOUT_AUD_BUS] = clk_hw_register_divider(NULL,
 				"dout_aud_bus", "mout_audss", 0,
 				reg_base + ASS_CLK_DIV, 0, 4, 0, &lock);
-	clk_table[CLK_DOUT_I2S_A] = clk_register_divider(NULL, "dout_i2s_audss",
-				"mout_i2s_audss", 0, reg_base + ASS_CLK_DIV,
-				4, 4, 0, &lock);
+	clk_table[CLK_DOUT_I2S_A] = clk_hw_register_divider(NULL,
+				"dout_i2s_audss", "mout_i2s_audss", 0,
+				reg_base + ASS_CLK_DIV, 4, 4, 0, &lock);
 
-	clk_table[CLK_I2S] = clk_register_gate(NULL, "i2s_audss",
+	clk_table[CLK_I2S] = clk_hw_register_gate(NULL, "i2s_audss",
 				"dout_i2s_audss", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 6, 0, &lock);
 
 	hclk_p = __clk_get_name(hclk);
 
-	clk_table[CLK_HCLK_I2S] = clk_register_gate(NULL, "hclk_i2s_audss",
+	clk_table[CLK_HCLK_I2S] = clk_hw_register_gate(NULL, "hclk_i2s_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 5, 0, &lock);
-	clk_table[CLK_HCLK_UART] = clk_register_gate(NULL, "hclk_uart_audss",
+	clk_table[CLK_HCLK_UART] = clk_hw_register_gate(NULL, "hclk_uart_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 4, 0, &lock);
-	clk_table[CLK_HCLK_HWA] = clk_register_gate(NULL, "hclk_hwa_audss",
+	clk_table[CLK_HCLK_HWA] = clk_hw_register_gate(NULL, "hclk_hwa_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 3, 0, &lock);
-	clk_table[CLK_HCLK_DMA] = clk_register_gate(NULL, "hclk_dma_audss",
+	clk_table[CLK_HCLK_DMA] = clk_hw_register_gate(NULL, "hclk_dma_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 2, 0, &lock);
-	clk_table[CLK_HCLK_BUF] = clk_register_gate(NULL, "hclk_buf_audss",
+	clk_table[CLK_HCLK_BUF] = clk_hw_register_gate(NULL, "hclk_buf_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 1, 0, &lock);
-	clk_table[CLK_HCLK_RP] = clk_register_gate(NULL, "hclk_rp_audss",
+	clk_table[CLK_HCLK_RP] = clk_hw_register_gate(NULL, "hclk_rp_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 0, 0, &lock);
 
-	for (i = 0; i < clk_data.clk_num; i++) {
+	for (i = 0; i < clk_data->num; i++) {
 		if (IS_ERR(clk_table[i])) {
 			dev_err(&pdev->dev, "failed to register clock %d\n", i);
 			ret = PTR_ERR(clk_table[i]);
@@ -172,7 +174,7 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 		}
 	}
 
-	ret = of_clk_add_provider(pdev->dev.of_node, of_clk_src_onecell_get,
+	ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get,
 					&clk_data);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add clock provider\n");
@@ -186,9 +188,9 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 	return 0;
 
 unregister:
-	for (i = 0; i < clk_data.clk_num; i++) {
+	for (i = 0; i < clk_data->num; i++) {
 		if (!IS_ERR(clk_table[i]))
-			clk_unregister(clk_table[i]);
+			clk_hw_unregister(clk_table[i]);
 	}
 
 	return ret;
-- 
1.9.1

Re: [PATCH v2 1/6] clk: samsung: Remove dead code

[Krzysztof Kozlowski]

On Mon, Apr 24, 2017 at 8:42 AM, Marek Szyprowski
<m.szyprowski@samsung.com> wrote:
> samsung_clk_register_pll2550x() function is not used anymore, so remove its
> declaration.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>  drivers/clk/samsung/clk-pll.h | 4 ----
>  1 file changed, 4 deletions(-)
>

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof

Re: [PATCH v2 2/6] clk: samsung: Add local variable to match it purpose

[Krzysztof Kozlowski]

On Mon, Apr 24, 2017 at 8:42 AM, Marek Szyprowski
<m.szyprowski@samsung.com> wrote:
> Add new variable to avoid using clk pointer for different purposes across
> the exynos_register_cpu_clock() function. This will help in future rewrite
> for the new clk_hw API.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>  drivers/clk/samsung/clk-cpu.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c
> index 8bf7e805fd34..6e1c6007e721 100644
> --- a/drivers/clk/samsung/clk-cpu.c
> +++ b/drivers/clk/samsung/clk-cpu.c
> @@ -410,6 +410,7 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
>  {
>         struct exynos_cpuclk *cpuclk;
>         struct clk_init_data init;
> +       struct clk *parent_clk;
>         struct clk *clk;
>         int ret = 0;
>
> @@ -440,15 +441,15 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
>                 goto free_cpuclk;
>         }
>
> -       clk = __clk_lookup(parent);
> -       if (!clk) {
> +       parent_clk = __clk_lookup(parent);
> +       if (!parent_clk) {
>                 pr_err("%s: could not lookup parent clock %s\n",
>                                 __func__, parent);
>                 ret = -EINVAL;
>                 goto free_cpuclk;
>         }
>
> -       ret = clk_notifier_register(clk, &cpuclk->clk_nb);
> +       ret = clk_notifier_register(parent_clk, &cpuclk->clk_nb);
>         if (ret) {
>                 pr_err("%s: failed to register clock notifier for %s\n",
>                                 __func__, name);

You can also remove one clk_lookup and just use "parent_clk" in error path:

478 unregister_clk_nb:
479         clk_notifier_unregister(__clk_lookup(parent), &cpuclk->clk_nb);

Best regards,
Krzysztof

Re: [PATCH v2 3/6] clk: samsung: Convert common drivers to the new clk_hw API

[Krzysztof Kozlowski]

On Mon, Apr 24, 2017 at 8:42 AM, Marek Szyprowski
<m.szyprowski@samsung.com> wrote:
> Clock providers should use the new struct clk_hw based API, so convert
> Samsung clock providers and their helper functions to the new approach.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>  drivers/clk/samsung/clk-cpu.c          |  8 ++-
>  drivers/clk/samsung/clk-pll.c          | 14 +++---
>  drivers/clk/samsung/clk-s3c2410-dclk.c | 75 ++++++++++++++--------------
>  drivers/clk/samsung/clk.c              | 91 +++++++++++++++-------------------
>  drivers/clk/samsung/clk.h              |  9 ++--
>  5 files changed, 92 insertions(+), 105 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof

Re: [PATCH v2 6/6] clk: samsung: s5pv210-audss: Convert to the new clk_hw API

[Krzysztof Kozlowski]

On Mon, Apr 24, 2017 at 8:42 AM, Marek Szyprowski
<m.szyprowski@samsung.com> wrote:
> Clock providers should use the new struct clk_hw based API, so convert
> Samsung S5PV210 Audio Subsystem clock provider to the new approach.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>  drivers/clk/samsung/clk-s5pv210-audss.c | 50 +++++++++++++++++----------------
>  1 file changed, 26 insertions(+), 24 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof

[PATCH v2.1 2/6] clk: samsung: Add local variable to match it purpose

[Marek Szyprowski]

Add new variable to avoid using clk pointer for different purposes across
the exynos_register_cpu_clock() function. This will help in future rewrite
for the new clk_hw API.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 drivers/clk/samsung/clk-cpu.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c
index 8bf7e805fd34..c6dd83dce09d 100644
--- a/drivers/clk/samsung/clk-cpu.c
+++ b/drivers/clk/samsung/clk-cpu.c
@@ -410,6 +410,7 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
 {
 	struct exynos_cpuclk *cpuclk;
 	struct clk_init_data init;
+	struct clk *parent_clk;
 	struct clk *clk;
 	int ret = 0;
 
@@ -440,15 +441,15 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
 		goto free_cpuclk;
 	}
 
-	clk = __clk_lookup(parent);
-	if (!clk) {
+	parent_clk = __clk_lookup(parent);
+	if (!parent_clk) {
 		pr_err("%s: could not lookup parent clock %s\n",
 				__func__, parent);
 		ret = -EINVAL;
 		goto free_cpuclk;
 	}
 
-	ret = clk_notifier_register(clk, &cpuclk->clk_nb);
+	ret = clk_notifier_register(parent_clk, &cpuclk->clk_nb);
 	if (ret) {
 		pr_err("%s: failed to register clock notifier for %s\n",
 				__func__, name);
@@ -476,7 +477,7 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
 free_cpuclk_data:
 	kfree(cpuclk->cfg);
 unregister_clk_nb:
-	clk_notifier_unregister(__clk_lookup(parent), &cpuclk->clk_nb);
+	clk_notifier_unregister(parent_clk, &cpuclk->clk_nb);
 free_cpuclk:
 	kfree(cpuclk);
 	return ret;
-- 
1.9.1

Re: [PATCH v2.1 2/6] clk: samsung: Add local variable to match it purpose

[Krzysztof Kozlowski]

On Mon, Apr 24, 2017 at 9:54 AM, Marek Szyprowski
<m.szyprowski@samsung.com> wrote:
> Add new variable to avoid using clk pointer for different purposes across
> the exynos_register_cpu_clock() function. This will help in future rewrite
> for the new clk_hw API.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>  drivers/clk/samsung/clk-cpu.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
>

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof

Re: [PATCH v2 0/6] Samsung clock providers: convert to the new clk_hw API

[Sylwester Nawrocki]

On 04/24/2017 08:42 AM, Marek Szyprowski wrote:
> Marek Szyprowski (6):
>   clk: samsung: Remove dead code
>   clk: samsung: Add local variable to match it purpose
>   clk: samsung: Convert common drivers to the new clk_hw API
>   clk: samsung: exynos-audss: Convert to the new clk_hw API
>   clk: samsung: exynos-clkout: Convert to the new clk_hw API
>   clk: samsung: s5pv210-audss: Convert to the new clk_hw API

Whole series applied, thanks.

[PATCH v3 4/6] clk: samsung: exynos-audss: Convert to the new clk_hw API

[Marek Szyprowski]

Clock providers should use the new struct clk_hw based API, so convert
Exynos Audio Subsystem clock provider to the new approach.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
---
Sylwester, if possible, please replace v2 with this fixed version in your tree,
as it has not been merged yet to clk-next nor to linux-next.

Changelog
v3:
- fixed clock data parameter passed to of_clk_add_hw_provider() - after conversion
  clk_data is a pointer, so passing it as &clk_data is wrong and causes serious issues

---
 drivers/clk/samsung/clk-exynos-audss.c | 57 +++++++++++++++++-----------------
 1 file changed, 29 insertions(+), 28 deletions(-)

diff --git a/drivers/clk/samsung/clk-exynos-audss.c b/drivers/clk/samsung/clk-exynos-audss.c
index cb7df358a27d..85edeb738853 100644
--- a/drivers/clk/samsung/clk-exynos-audss.c
+++ b/drivers/clk/samsung/clk-exynos-audss.c
@@ -22,9 +22,8 @@
 #include <dt-bindings/clock/exynos-audss-clk.h>
 
 static DEFINE_SPINLOCK(lock);
-static struct clk **clk_table;
 static void __iomem *reg_base;
-static struct clk_onecell_data clk_data;
+static struct clk_hw_onecell_data *clk_data;
 /*
  * On Exynos5420 this will be a clock which has to be enabled before any
  * access to audss registers. Typically a child of EPLL.
@@ -110,18 +109,18 @@ static void exynos_audss_clk_teardown(void)
 	int i;
 
 	for (i = EXYNOS_MOUT_AUDSS; i < EXYNOS_DOUT_SRP; i++) {
-		if (!IS_ERR(clk_table[i]))
-			clk_unregister_mux(clk_table[i]);
+		if (!IS_ERR(clk_data->hws[i]))
+			clk_hw_unregister_mux(clk_data->hws[i]);
 	}
 
 	for (; i < EXYNOS_SRP_CLK; i++) {
-		if (!IS_ERR(clk_table[i]))
-			clk_unregister_divider(clk_table[i]);
+		if (!IS_ERR(clk_data->hws[i]))
+			clk_hw_unregister_divider(clk_data->hws[i]);
 	}
 
-	for (; i < clk_data.clk_num; i++) {
-		if (!IS_ERR(clk_table[i]))
-			clk_unregister_gate(clk_table[i]);
+	for (; i < clk_data->num; i++) {
+		if (!IS_ERR(clk_data->hws[i]))
+			clk_hw_unregister_gate(clk_data->hws[i]);
 	}
 }
 
@@ -133,6 +132,7 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 	const char *sclk_pcm_p = "sclk_pcm0";
 	struct clk *pll_ref, *pll_in, *cdclk, *sclk_audio, *sclk_pcm_in;
 	const struct exynos_audss_clk_drvdata *variant;
+	struct clk_hw **clk_table;
 	struct resource *res;
 	int i, ret = 0;
 
@@ -149,14 +149,15 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 
 	epll = ERR_PTR(-ENODEV);
 
-	clk_table = devm_kzalloc(&pdev->dev,
-				sizeof(struct clk *) * EXYNOS_AUDSS_MAX_CLKS,
+	clk_data = devm_kzalloc(&pdev->dev,
+				sizeof(*clk_data) +
+				sizeof(*clk_data->hws) * EXYNOS_AUDSS_MAX_CLKS,
 				GFP_KERNEL);
-	if (!clk_table)
+	if (!clk_data)
 		return -ENOMEM;
 
-	clk_data.clks = clk_table;
-	clk_data.clk_num = variant->num_clks;
+	clk_data->num = variant->num_clks;
+	clk_table = clk_data->hws;
 
 	pll_ref = devm_clk_get(&pdev->dev, "pll_ref");
 	pll_in = devm_clk_get(&pdev->dev, "pll_in");
@@ -176,7 +177,7 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 			}
 		}
 	}
-	clk_table[EXYNOS_MOUT_AUDSS] = clk_register_mux(NULL, "mout_audss",
+	clk_table[EXYNOS_MOUT_AUDSS] = clk_hw_register_mux(NULL, "mout_audss",
 				mout_audss_p, ARRAY_SIZE(mout_audss_p),
 				CLK_SET_RATE_NO_REPARENT,
 				reg_base + ASS_CLK_SRC, 0, 1, 0, &lock);
@@ -187,53 +188,53 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 		mout_i2s_p[1] = __clk_get_name(cdclk);
 	if (!IS_ERR(sclk_audio))
 		mout_i2s_p[2] = __clk_get_name(sclk_audio);
-	clk_table[EXYNOS_MOUT_I2S] = clk_register_mux(NULL, "mout_i2s",
+	clk_table[EXYNOS_MOUT_I2S] = clk_hw_register_mux(NULL, "mout_i2s",
 				mout_i2s_p, ARRAY_SIZE(mout_i2s_p),
 				CLK_SET_RATE_NO_REPARENT,
 				reg_base + ASS_CLK_SRC, 2, 2, 0, &lock);
 
-	clk_table[EXYNOS_DOUT_SRP] = clk_register_divider(NULL, "dout_srp",
+	clk_table[EXYNOS_DOUT_SRP] = clk_hw_register_divider(NULL, "dout_srp",
 				"mout_audss", 0, reg_base + ASS_CLK_DIV, 0, 4,
 				0, &lock);
 
-	clk_table[EXYNOS_DOUT_AUD_BUS] = clk_register_divider(NULL,
+	clk_table[EXYNOS_DOUT_AUD_BUS] = clk_hw_register_divider(NULL,
 				"dout_aud_bus", "dout_srp", 0,
 				reg_base + ASS_CLK_DIV, 4, 4, 0, &lock);
 
-	clk_table[EXYNOS_DOUT_I2S] = clk_register_divider(NULL, "dout_i2s",
+	clk_table[EXYNOS_DOUT_I2S] = clk_hw_register_divider(NULL, "dout_i2s",
 				"mout_i2s", 0, reg_base + ASS_CLK_DIV, 8, 4, 0,
 				&lock);
 
-	clk_table[EXYNOS_SRP_CLK] = clk_register_gate(NULL, "srp_clk",
+	clk_table[EXYNOS_SRP_CLK] = clk_hw_register_gate(NULL, "srp_clk",
 				"dout_srp", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 0, 0, &lock);
 
-	clk_table[EXYNOS_I2S_BUS] = clk_register_gate(NULL, "i2s_bus",
+	clk_table[EXYNOS_I2S_BUS] = clk_hw_register_gate(NULL, "i2s_bus",
 				"dout_aud_bus", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 2, 0, &lock);
 
-	clk_table[EXYNOS_SCLK_I2S] = clk_register_gate(NULL, "sclk_i2s",
+	clk_table[EXYNOS_SCLK_I2S] = clk_hw_register_gate(NULL, "sclk_i2s",
 				"dout_i2s", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 3, 0, &lock);
 
-	clk_table[EXYNOS_PCM_BUS] = clk_register_gate(NULL, "pcm_bus",
+	clk_table[EXYNOS_PCM_BUS] = clk_hw_register_gate(NULL, "pcm_bus",
 				 "sclk_pcm", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 4, 0, &lock);
 
 	sclk_pcm_in = devm_clk_get(&pdev->dev, "sclk_pcm_in");
 	if (!IS_ERR(sclk_pcm_in))
 		sclk_pcm_p = __clk_get_name(sclk_pcm_in);
-	clk_table[EXYNOS_SCLK_PCM] = clk_register_gate(NULL, "sclk_pcm",
+	clk_table[EXYNOS_SCLK_PCM] = clk_hw_register_gate(NULL, "sclk_pcm",
 				sclk_pcm_p, CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 5, 0, &lock);
 
 	if (variant->has_adma_clk) {
-		clk_table[EXYNOS_ADMA] = clk_register_gate(NULL, "adma",
+		clk_table[EXYNOS_ADMA] = clk_hw_register_gate(NULL, "adma",
 				"dout_srp", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 9, 0, &lock);
 	}
 
-	for (i = 0; i < clk_data.clk_num; i++) {
+	for (i = 0; i < clk_data->num; i++) {
 		if (IS_ERR(clk_table[i])) {
 			dev_err(&pdev->dev, "failed to register clock %d\n", i);
 			ret = PTR_ERR(clk_table[i]);
@@ -241,8 +242,8 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 		}
 	}
 
-	ret = of_clk_add_provider(pdev->dev.of_node, of_clk_src_onecell_get,
-					&clk_data);
+	ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get,
+				     clk_data);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add clock provider\n");
 		goto unregister;
-- 
1.9.1

[PATCH v3 6/6] clk: samsung: s5pv210-audss: Convert to the new clk_hw API

[Marek Szyprowski]

Clock providers should use the new struct clk_hw based API, so convert
Samsung S5PV210 Audio Subsystem clock provider to the new approach.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
---
Sylwester, if possible, please replace v2 with this fixed version in your tree,
as it has not been merged yet to clk-next nor to linux-next.

Changelog
v3:
- fixed clock data parameter passed to of_clk_add_hw_provider() - after conversion
  clk_data is a pointer, so passing it as &clk_data is wrong and causes serious issues
---
 drivers/clk/samsung/clk-s5pv210-audss.c | 52 +++++++++++++++++----------------
 1 file changed, 27 insertions(+), 25 deletions(-)

diff --git a/drivers/clk/samsung/clk-s5pv210-audss.c b/drivers/clk/samsung/clk-s5pv210-audss.c
index c66ed2d1450e..b9641414ddc6 100644
--- a/drivers/clk/samsung/clk-s5pv210-audss.c
+++ b/drivers/clk/samsung/clk-s5pv210-audss.c
@@ -24,9 +24,8 @@
 #include <dt-bindings/clock/s5pv210-audss.h>
 
 static DEFINE_SPINLOCK(lock);
-static struct clk **clk_table;
 static void __iomem *reg_base;
-static struct clk_onecell_data clk_data;
+static struct clk_hw_onecell_data *clk_data;
 
 #define ASS_CLK_SRC 0x0
 #define ASS_CLK_DIV 0x4
@@ -71,6 +70,7 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 	const char *mout_audss_p[2];
 	const char *mout_i2s_p[3];
 	const char *hclk_p;
+	struct clk_hw **clk_table;
 	struct clk *hclk, *pll_ref, *pll_in, *cdclk, *sclk_audio;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -80,14 +80,16 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 		return PTR_ERR(reg_base);
 	}
 
-	clk_table = devm_kzalloc(&pdev->dev,
-				sizeof(struct clk *) * AUDSS_MAX_CLKS,
+	clk_data = devm_kzalloc(&pdev->dev,
+				sizeof(*clk_data) +
+				sizeof(*clk_data->hws) * AUDSS_MAX_CLKS,
 				GFP_KERNEL);
-	if (!clk_table)
+
+	if (!clk_data)
 		return -ENOMEM;
 
-	clk_data.clks = clk_table;
-	clk_data.clk_num = AUDSS_MAX_CLKS;
+	clk_data->num = AUDSS_MAX_CLKS;
+	clk_table = clk_data->hws;
 
 	hclk = devm_clk_get(&pdev->dev, "hclk");
 	if (IS_ERR(hclk)) {
@@ -116,7 +118,7 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 	else
 		mout_audss_p[0] = "xxti";
 	mout_audss_p[1] = __clk_get_name(pll_in);
-	clk_table[CLK_MOUT_AUDSS] = clk_register_mux(NULL, "mout_audss",
+	clk_table[CLK_MOUT_AUDSS] = clk_hw_register_mux(NULL, "mout_audss",
 				mout_audss_p, ARRAY_SIZE(mout_audss_p),
 				CLK_SET_RATE_NO_REPARENT,
 				reg_base + ASS_CLK_SRC, 0, 1, 0, &lock);
@@ -127,44 +129,44 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 	else
 		mout_i2s_p[1] = "iiscdclk0";
 	mout_i2s_p[2] = __clk_get_name(sclk_audio);
-	clk_table[CLK_MOUT_I2S_A] = clk_register_mux(NULL, "mout_i2s_audss",
+	clk_table[CLK_MOUT_I2S_A] = clk_hw_register_mux(NULL, "mout_i2s_audss",
 				mout_i2s_p, ARRAY_SIZE(mout_i2s_p),
 				CLK_SET_RATE_NO_REPARENT,
 				reg_base + ASS_CLK_SRC, 2, 2, 0, &lock);
 
-	clk_table[CLK_DOUT_AUD_BUS] = clk_register_divider(NULL,
+	clk_table[CLK_DOUT_AUD_BUS] = clk_hw_register_divider(NULL,
 				"dout_aud_bus", "mout_audss", 0,
 				reg_base + ASS_CLK_DIV, 0, 4, 0, &lock);
-	clk_table[CLK_DOUT_I2S_A] = clk_register_divider(NULL, "dout_i2s_audss",
-				"mout_i2s_audss", 0, reg_base + ASS_CLK_DIV,
-				4, 4, 0, &lock);
+	clk_table[CLK_DOUT_I2S_A] = clk_hw_register_divider(NULL,
+				"dout_i2s_audss", "mout_i2s_audss", 0,
+				reg_base + ASS_CLK_DIV, 4, 4, 0, &lock);
 
-	clk_table[CLK_I2S] = clk_register_gate(NULL, "i2s_audss",
+	clk_table[CLK_I2S] = clk_hw_register_gate(NULL, "i2s_audss",
 				"dout_i2s_audss", CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 6, 0, &lock);
 
 	hclk_p = __clk_get_name(hclk);
 
-	clk_table[CLK_HCLK_I2S] = clk_register_gate(NULL, "hclk_i2s_audss",
+	clk_table[CLK_HCLK_I2S] = clk_hw_register_gate(NULL, "hclk_i2s_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 5, 0, &lock);
-	clk_table[CLK_HCLK_UART] = clk_register_gate(NULL, "hclk_uart_audss",
+	clk_table[CLK_HCLK_UART] = clk_hw_register_gate(NULL, "hclk_uart_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 4, 0, &lock);
-	clk_table[CLK_HCLK_HWA] = clk_register_gate(NULL, "hclk_hwa_audss",
+	clk_table[CLK_HCLK_HWA] = clk_hw_register_gate(NULL, "hclk_hwa_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 3, 0, &lock);
-	clk_table[CLK_HCLK_DMA] = clk_register_gate(NULL, "hclk_dma_audss",
+	clk_table[CLK_HCLK_DMA] = clk_hw_register_gate(NULL, "hclk_dma_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 2, 0, &lock);
-	clk_table[CLK_HCLK_BUF] = clk_register_gate(NULL, "hclk_buf_audss",
+	clk_table[CLK_HCLK_BUF] = clk_hw_register_gate(NULL, "hclk_buf_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 1, 0, &lock);
-	clk_table[CLK_HCLK_RP] = clk_register_gate(NULL, "hclk_rp_audss",
+	clk_table[CLK_HCLK_RP] = clk_hw_register_gate(NULL, "hclk_rp_audss",
 				hclk_p, CLK_IGNORE_UNUSED,
 				reg_base + ASS_CLK_GATE, 0, 0, &lock);
 
-	for (i = 0; i < clk_data.clk_num; i++) {
+	for (i = 0; i < clk_data->num; i++) {
 		if (IS_ERR(clk_table[i])) {
 			dev_err(&pdev->dev, "failed to register clock %d\n", i);
 			ret = PTR_ERR(clk_table[i]);
@@ -172,8 +174,8 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 		}
 	}
 
-	ret = of_clk_add_provider(pdev->dev.of_node, of_clk_src_onecell_get,
-					&clk_data);
+	ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get,
+				     clk_data);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add clock provider\n");
 		goto unregister;
@@ -186,9 +188,9 @@ static int s5pv210_audss_clk_probe(struct platform_device *pdev)
 	return 0;
 
 unregister:
-	for (i = 0; i < clk_data.clk_num; i++) {
+	for (i = 0; i < clk_data->num; i++) {
 		if (!IS_ERR(clk_table[i]))
-			clk_unregister(clk_table[i]);
+			clk_hw_unregister(clk_table[i]);
 	}
 
 	return ret;
-- 
1.9.1

Re: [PATCH v3 4/6] clk: samsung: exynos-audss: Convert to the new clk_hw API

[Chanwoo Choi]

Dear Marek,

I tested this patch[1] which was applied on Sylwester's git repo. 
[1] https://git.linuxtv.org/snawrocki/samsung.git/commit/?h=for-v4.13/clk/next&id=6622c52f47372186c17548ca7398c229c45e6215

When I tested it on XU3, I can't get the kernel booting.

[Following log]
U-Boot 2016.03-gc2deb3a51-TIZEN.org (Oct 28 2016 - 18:00:23 +0000) for ODROID-XU3

CPU:   Exynos5422 @ 800 MHz
Model: Odroid XU3 based on EXYNOS5422
Board: Odroid XU3 based on EXYNOS5422
Type:  xu3
DRAM:  2 GiB
MMC:   EXYNOS DWMMC: 0, EXYNOS DWMMC: 1
In:    serial
Out:   serial
Err:   serial
Net:   No ethernet found.
Hit any key to stop autoboot:  0 
reading exynos5422-odroidxu3.dtb
56532 bytes read in 16 ms (3.4 MiB/s)
reading uInitrd
** Unable to read file uInitrd **
reading zImage
7676176 bytes read in 208 ms (35.2 MiB/s)
Kernel image @ 0x40007fc0 [ 0x000000 - 0x752110 ]
## Flattened Device Tree blob at 40800000
   Booting using the fdt blob at 0x40800000
   Loading Device Tree to 4ffef000, end 4ffffcd3 ... OK

Starting kernel ...




On 2017년 05월 15일 15:50, Marek Szyprowski wrote:
> Clock providers should use the new struct clk_hw based API, so convert
> Exynos Audio Subsystem clock provider to the new approach.
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
> ---
> Sylwester, if possible, please replace v2 with this fixed version in your tree,
> as it has not been merged yet to clk-next nor to linux-next.
> 
> Changelog
> v3:
> - fixed clock data parameter passed to of_clk_add_hw_provider() - after conversion
>   clk_data is a pointer, so passing it as &clk_data is wrong and causes serious issues
> 
> ---
>  drivers/clk/samsung/clk-exynos-audss.c | 57 +++++++++++++++++-----------------
>  1 file changed, 29 insertions(+), 28 deletions(-)
> 
> diff --git a/drivers/clk/samsung/clk-exynos-audss.c b/drivers/clk/samsung/clk-exynos-audss.c
> index cb7df358a27d..85edeb738853 100644
> --- a/drivers/clk/samsung/clk-exynos-audss.c
> +++ b/drivers/clk/samsung/clk-exynos-audss.c
> @@ -22,9 +22,8 @@
>  #include <dt-bindings/clock/exynos-audss-clk.h>
>  
>  static DEFINE_SPINLOCK(lock);
> -static struct clk **clk_table;
>  static void __iomem *reg_base;
> -static struct clk_onecell_data clk_data;
> +static struct clk_hw_onecell_data *clk_data;
>  /*
>   * On Exynos5420 this will be a clock which has to be enabled before any
>   * access to audss registers. Typically a child of EPLL.
> @@ -110,18 +109,18 @@ static void exynos_audss_clk_teardown(void)
>  	int i;
>  
>  	for (i = EXYNOS_MOUT_AUDSS; i < EXYNOS_DOUT_SRP; i++) {
> -		if (!IS_ERR(clk_table[i]))
> -			clk_unregister_mux(clk_table[i]);
> +		if (!IS_ERR(clk_data->hws[i]))
> +			clk_hw_unregister_mux(clk_data->hws[i]);
>  	}
>  
>  	for (; i < EXYNOS_SRP_CLK; i++) {
> -		if (!IS_ERR(clk_table[i]))
> -			clk_unregister_divider(clk_table[i]);
> +		if (!IS_ERR(clk_data->hws[i]))
> +			clk_hw_unregister_divider(clk_data->hws[i]);
>  	}
>  
> -	for (; i < clk_data.clk_num; i++) {
> -		if (!IS_ERR(clk_table[i]))
> -			clk_unregister_gate(clk_table[i]);
> +	for (; i < clk_data->num; i++) {
> +		if (!IS_ERR(clk_data->hws[i]))
> +			clk_hw_unregister_gate(clk_data->hws[i]);
>  	}
>  }
>  
> @@ -133,6 +132,7 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
>  	const char *sclk_pcm_p = "sclk_pcm0";
>  	struct clk *pll_ref, *pll_in, *cdclk, *sclk_audio, *sclk_pcm_in;
>  	const struct exynos_audss_clk_drvdata *variant;
> +	struct clk_hw **clk_table;
>  	struct resource *res;
>  	int i, ret = 0;
>  
> @@ -149,14 +149,15 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
>  
>  	epll = ERR_PTR(-ENODEV);
>  
> -	clk_table = devm_kzalloc(&pdev->dev,
> -				sizeof(struct clk *) * EXYNOS_AUDSS_MAX_CLKS,
> +	clk_data = devm_kzalloc(&pdev->dev,
> +				sizeof(*clk_data) +
> +				sizeof(*clk_data->hws) * EXYNOS_AUDSS_MAX_CLKS,
>  				GFP_KERNEL);
> -	if (!clk_table)
> +	if (!clk_data)
>  		return -ENOMEM;
>  
> -	clk_data.clks = clk_table;
> -	clk_data.clk_num = variant->num_clks;
> +	clk_data->num = variant->num_clks;
> +	clk_table = clk_data->hws;
>  
>  	pll_ref = devm_clk_get(&pdev->dev, "pll_ref");
>  	pll_in = devm_clk_get(&pdev->dev, "pll_in");
> @@ -176,7 +177,7 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
>  			}
>  		}
>  	}
> -	clk_table[EXYNOS_MOUT_AUDSS] = clk_register_mux(NULL, "mout_audss",
> +	clk_table[EXYNOS_MOUT_AUDSS] = clk_hw_register_mux(NULL, "mout_audss",
>  				mout_audss_p, ARRAY_SIZE(mout_audss_p),
>  				CLK_SET_RATE_NO_REPARENT,
>  				reg_base + ASS_CLK_SRC, 0, 1, 0, &lock);
> @@ -187,53 +188,53 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
>  		mout_i2s_p[1] = __clk_get_name(cdclk);
>  	if (!IS_ERR(sclk_audio))
>  		mout_i2s_p[2] = __clk_get_name(sclk_audio);
> -	clk_table[EXYNOS_MOUT_I2S] = clk_register_mux(NULL, "mout_i2s",
> +	clk_table[EXYNOS_MOUT_I2S] = clk_hw_register_mux(NULL, "mout_i2s",
>  				mout_i2s_p, ARRAY_SIZE(mout_i2s_p),
>  				CLK_SET_RATE_NO_REPARENT,
>  				reg_base + ASS_CLK_SRC, 2, 2, 0, &lock);
>  
> -	clk_table[EXYNOS_DOUT_SRP] = clk_register_divider(NULL, "dout_srp",
> +	clk_table[EXYNOS_DOUT_SRP] = clk_hw_register_divider(NULL, "dout_srp",
>  				"mout_audss", 0, reg_base + ASS_CLK_DIV, 0, 4,
>  				0, &lock);
>  
> -	clk_table[EXYNOS_DOUT_AUD_BUS] = clk_register_divider(NULL,
> +	clk_table[EXYNOS_DOUT_AUD_BUS] = clk_hw_register_divider(NULL,
>  				"dout_aud_bus", "dout_srp", 0,
>  				reg_base + ASS_CLK_DIV, 4, 4, 0, &lock);
>  
> -	clk_table[EXYNOS_DOUT_I2S] = clk_register_divider(NULL, "dout_i2s",
> +	clk_table[EXYNOS_DOUT_I2S] = clk_hw_register_divider(NULL, "dout_i2s",
>  				"mout_i2s", 0, reg_base + ASS_CLK_DIV, 8, 4, 0,
>  				&lock);
>  
> -	clk_table[EXYNOS_SRP_CLK] = clk_register_gate(NULL, "srp_clk",
> +	clk_table[EXYNOS_SRP_CLK] = clk_hw_register_gate(NULL, "srp_clk",
>  				"dout_srp", CLK_SET_RATE_PARENT,
>  				reg_base + ASS_CLK_GATE, 0, 0, &lock);
>  
> -	clk_table[EXYNOS_I2S_BUS] = clk_register_gate(NULL, "i2s_bus",
> +	clk_table[EXYNOS_I2S_BUS] = clk_hw_register_gate(NULL, "i2s_bus",
>  				"dout_aud_bus", CLK_SET_RATE_PARENT,
>  				reg_base + ASS_CLK_GATE, 2, 0, &lock);
>  
> -	clk_table[EXYNOS_SCLK_I2S] = clk_register_gate(NULL, "sclk_i2s",
> +	clk_table[EXYNOS_SCLK_I2S] = clk_hw_register_gate(NULL, "sclk_i2s",
>  				"dout_i2s", CLK_SET_RATE_PARENT,
>  				reg_base + ASS_CLK_GATE, 3, 0, &lock);
>  
> -	clk_table[EXYNOS_PCM_BUS] = clk_register_gate(NULL, "pcm_bus",
> +	clk_table[EXYNOS_PCM_BUS] = clk_hw_register_gate(NULL, "pcm_bus",
>  				 "sclk_pcm", CLK_SET_RATE_PARENT,
>  				reg_base + ASS_CLK_GATE, 4, 0, &lock);
>  
>  	sclk_pcm_in = devm_clk_get(&pdev->dev, "sclk_pcm_in");
>  	if (!IS_ERR(sclk_pcm_in))
>  		sclk_pcm_p = __clk_get_name(sclk_pcm_in);
> -	clk_table[EXYNOS_SCLK_PCM] = clk_register_gate(NULL, "sclk_pcm",
> +	clk_table[EXYNOS_SCLK_PCM] = clk_hw_register_gate(NULL, "sclk_pcm",
>  				sclk_pcm_p, CLK_SET_RATE_PARENT,
>  				reg_base + ASS_CLK_GATE, 5, 0, &lock);
>  
>  	if (variant->has_adma_clk) {
> -		clk_table[EXYNOS_ADMA] = clk_register_gate(NULL, "adma",
> +		clk_table[EXYNOS_ADMA] = clk_hw_register_gate(NULL, "adma",
>  				"dout_srp", CLK_SET_RATE_PARENT,
>  				reg_base + ASS_CLK_GATE, 9, 0, &lock);
>  	}
>  
> -	for (i = 0; i < clk_data.clk_num; i++) {
> +	for (i = 0; i < clk_data->num; i++) {
>  		if (IS_ERR(clk_table[i])) {
>  			dev_err(&pdev->dev, "failed to register clock %d\n", i);
>  			ret = PTR_ERR(clk_table[i]);
> @@ -241,8 +242,8 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
>  		}
>  	}
>  
> -	ret = of_clk_add_provider(pdev->dev.of_node, of_clk_src_onecell_get,
> -					&clk_data);
> +	ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get,
> +				     clk_data);
>  	if (ret) {
>  		dev_err(&pdev->dev, "failed to add clock provider\n");
>  		goto unregister;
> 


-- 
Best Regards,
Chanwoo Choi
Samsung Electronics

Re: [PATCH v3 4/6] clk: samsung: exynos-audss: Convert to the new clk_hw API

[Sylwester Nawrocki]

Hi Chanwoo,

On 06/09/2017 03:33 AM, Chanwoo Choi wrote:
> I tested this patch[1] which was applied on Sylwester's git repo.
> [1]https://git.linuxtv.org/snawrocki/samsung.git/commit/?h=for-v4.13/clk/next&id=6622c52f47372186c17548ca7398c229c45e6215
> 
> When I tested it on XU3, I can't get the kernel booting.

Thanks for checking this, it seems I didn't appply v3 patches from Marek.
I corrected this now and tested on Odroid-XU3. The right patches should
be now in the for-v4.13/clk/next branch.

-- 
Regards,
Sylwester