[PATCH v2 1/2] dt-bindings: clock: samsung: add IDs for some core clocks

[PATCH v2 1/2] dt-bindings: clock: samsung: add IDs for some core clocks

[Marek Szyprowski]

Add IDs for some core clocks referenced during the boot process.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 include/dt-bindings/clock/exynos4.h    | 4 +++-
 include/dt-bindings/clock/exynos5250.h | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/dt-bindings/clock/exynos4.h b/include/dt-bindings/clock/exynos4.h
index 88ec3968b90a..acbfbab875ec 100644
--- a/include/dt-bindings/clock/exynos4.h
+++ b/include/dt-bindings/clock/exynos4.h
@@ -209,6 +209,7 @@
 #define CLK_ACLK400_MCUISP	395 /* Exynos4x12 only */
 #define CLK_MOUT_HDMI		396
 #define CLK_MOUT_MIXER		397
+#define CLK_MOUT_VPLLSRC	398
 
 /* gate clocks - ppmu */
 #define CLK_PPMULEFT		400
@@ -236,9 +237,10 @@
 #define CLK_DIV_C2C		458 /* Exynos4x12 only */
 #define CLK_DIV_GDL		459
 #define CLK_DIV_GDR		460
+#define CLK_DIV_CORE2		461
 
 /* must be greater than maximal clock id */
-#define CLK_NR_CLKS		461
+#define CLK_NR_CLKS		462
 
 /* Exynos4x12 ISP clocks */
 #define CLK_ISP_FIMC_ISP		 1
diff --git a/include/dt-bindings/clock/exynos5250.h b/include/dt-bindings/clock/exynos5250.h
index e259cc01f22f..4680da7357d3 100644
--- a/include/dt-bindings/clock/exynos5250.h
+++ b/include/dt-bindings/clock/exynos5250.h
@@ -19,6 +19,7 @@
 #define CLK_FOUT_EPLL		7
 #define CLK_FOUT_VPLL		8
 #define CLK_ARM_CLK		9
+#define CLK_DIV_ARM2		10
 
 /* gate for special clocks (sclk) */
 #define CLK_SCLK_CAM_BAYER	128
@@ -174,8 +175,9 @@
 #define CLK_MOUT_ACLK300_DISP1_SUB	1027
 #define CLK_MOUT_APLL		1028
 #define CLK_MOUT_MPLL		1029
+#define CLK_MOUT_VPLLSRC	1030
 
 /* must be greater than maximal clock id */
-#define CLK_NR_CLKS		1030
+#define CLK_NR_CLKS		1031
 
 #endif /* _DT_BINDINGS_CLOCK_EXYNOS_5250_H */
-- 
2.17.1

[PATCH v2 2/2] clk: samsung: remove __clk_lookup() usage

[Marek Szyprowski]

__clk_lookup() interface is obsolete, so remove it from the Samsung clock
drivers. This has been achieved by getting rid of custom _get_rate()
helper and replacing it with clk_hw_get_rate().

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
---
v2: moved include/dt-bindings/clock/exynos*.h changes to separate file
---
 drivers/clk/samsung/clk-exynos4.c    | 18 ++++++++++--------
 drivers/clk/samsung/clk-exynos5250.c | 10 +++++-----
 drivers/clk/samsung/clk-exynos5420.c |  2 +-
 drivers/clk/samsung/clk-s3c2410.c    |  6 ++++--
 drivers/clk/samsung/clk-s3c64xx.c    |  8 ++++++--
 drivers/clk/samsung/clk-s5pv210.c    |  8 ++++++--
 drivers/clk/samsung/clk.c            | 14 --------------
 drivers/clk/samsung/clk.h            |  2 --
 8 files changed, 32 insertions(+), 36 deletions(-)

diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
index bf13e29a655c..42b4b62bd483 100644
--- a/drivers/clk/samsung/clk-exynos4.c
+++ b/drivers/clk/samsung/clk-exynos4.c
@@ -437,7 +437,7 @@ static const struct samsung_mux_clock exynos4_mux_clks[] __initconst = {
 
 /* list of mux clocks supported in exynos4210 soc */
 static const struct samsung_mux_clock exynos4210_mux_early[] __initconst = {
-	MUX(0, "mout_vpllsrc", mout_vpllsrc_p, SRC_TOP1, 0, 1),
+	MUX(CLK_MOUT_VPLLSRC, "mout_vpllsrc", mout_vpllsrc_p, SRC_TOP1, 0, 1),
 };
 
 static const struct samsung_mux_clock exynos4210_mux_clks[] __initconst = {
@@ -603,7 +603,7 @@ static const struct samsung_div_clock exynos4_div_clks[] __initconst = {
 	DIV(0, "div_periph", "div_core2", DIV_CPU0, 12, 3),
 	DIV(0, "div_atb", "mout_core", DIV_CPU0, 16, 3),
 	DIV(0, "div_pclk_dbg", "div_atb", DIV_CPU0, 20, 3),
-	DIV(0, "div_core2", "div_core", DIV_CPU0, 28, 3),
+	DIV(CLK_DIV_CORE2, "div_core2", "div_core", DIV_CPU0, 28, 3),
 	DIV(0, "div_copy", "mout_hpm", DIV_CPU1, 0, 3),
 	DIV(0, "div_hpm", "div_copy", DIV_CPU1, 4, 3),
 	DIV(0, "div_clkout_cpu", "mout_clkout_cpu", CLKOUT_CMU_CPU, 8, 6),
@@ -1254,21 +1254,21 @@ static void __init exynos4_clk_init(struct device_node *np,
 		samsung_clk_register_mux(ctx, exynos4210_mux_early,
 					ARRAY_SIZE(exynos4210_mux_early));
 
-		if (_get_rate("fin_pll") == 24000000) {
+		if (clk_hw_get_rate(hws[CLK_FIN_PLL]) == 24000000) {
 			exynos4210_plls[apll].rate_table =
 							exynos4210_apll_rates;
 			exynos4210_plls[epll].rate_table =
 							exynos4210_epll_rates;
 		}
 
-		if (_get_rate("mout_vpllsrc") == 24000000)
+		if (clk_hw_get_rate(hws[CLK_MOUT_VPLLSRC]) == 24000000)
 			exynos4210_plls[vpll].rate_table =
 							exynos4210_vpll_rates;
 
 		samsung_clk_register_pll(ctx, exynos4210_plls,
 					ARRAY_SIZE(exynos4210_plls), reg_base);
 	} else {
-		if (_get_rate("fin_pll") == 24000000) {
+		if (clk_hw_get_rate(hws[CLK_FIN_PLL]) == 24000000) {
 			exynos4x12_plls[apll].rate_table =
 							exynos4x12_apll_rates;
 			exynos4x12_plls[epll].rate_table =
@@ -1344,9 +1344,11 @@ static void __init exynos4_clk_init(struct device_node *np,
 	pr_info("%s clocks: sclk_apll = %ld, sclk_mpll = %ld\n"
 		"\tsclk_epll = %ld, sclk_vpll = %ld, arm_clk = %ld\n",
 		exynos4_soc == EXYNOS4210 ? "Exynos4210" : "Exynos4x12",
-		_get_rate("sclk_apll"),	_get_rate("sclk_mpll"),
-		_get_rate("sclk_epll"), _get_rate("sclk_vpll"),
-		_get_rate("div_core2"));
+		clk_hw_get_rate(hws[CLK_SCLK_APLL]),
+		clk_hw_get_rate(hws[CLK_SCLK_MPLL]),
+		clk_hw_get_rate(hws[CLK_SCLK_EPLL]),
+		clk_hw_get_rate(hws[CLK_SCLK_VPLL]),
+		clk_hw_get_rate(hws[CLK_DIV_CORE2]));
 }
 
 
diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c
index 06588fab408a..fde4998d2aab 100644
--- a/drivers/clk/samsung/clk-exynos5250.c
+++ b/drivers/clk/samsung/clk-exynos5250.c
@@ -239,7 +239,7 @@ static const struct samsung_fixed_factor_clock exynos5250_fixed_factor_clks[] __
 };
 
 static const struct samsung_mux_clock exynos5250_pll_pmux_clks[] __initconst = {
-	MUX(0, "mout_vpllsrc", mout_vpllsrc_p, SRC_TOP2, 0, 1),
+	MUX(CLK_MOUT_VPLLSRC, "mout_vpllsrc", mout_vpllsrc_p, SRC_TOP2, 0, 1),
 };
 
 static const struct samsung_mux_clock exynos5250_mux_clks[] __initconst = {
@@ -351,7 +351,7 @@ static const struct samsung_div_clock exynos5250_div_clks[] __initconst = {
 	 */
 	DIV(0, "div_arm", "mout_cpu", DIV_CPU0, 0, 3),
 	DIV(0, "div_apll", "mout_apll", DIV_CPU0, 24, 3),
-	DIV(0, "div_arm2", "div_arm", DIV_CPU0, 28, 3),
+	DIV(CLK_DIV_ARM2, "div_arm2", "div_arm", DIV_CPU0, 28, 3),
 
 	/*
 	 * CMU_TOP
@@ -801,12 +801,12 @@ static void __init exynos5250_clk_init(struct device_node *np)
 	samsung_clk_register_mux(ctx, exynos5250_pll_pmux_clks,
 				ARRAY_SIZE(exynos5250_pll_pmux_clks));
 
-	if (_get_rate("fin_pll") == 24 * MHZ) {
+	if (clk_hw_get_rate(hws[CLK_FIN_PLL]) == 24 * MHZ) {
 		exynos5250_plls[epll].rate_table = epll_24mhz_tbl;
 		exynos5250_plls[apll].rate_table = apll_24mhz_tbl;
 	}
 
-	if (_get_rate("mout_vpllsrc") == 24 * MHZ)
+	if (clk_hw_get_rate(hws[CLK_MOUT_VPLLSRC]) == 24 * MHZ)
 		exynos5250_plls[vpll].rate_table =  vpll_24mhz_tbl;
 
 	samsung_clk_register_pll(ctx, exynos5250_plls,
@@ -855,6 +855,6 @@ static void __init exynos5250_clk_init(struct device_node *np)
 	samsung_clk_of_add_provider(np, ctx);
 
 	pr_info("Exynos5250: clock setup completed, armclk=%ld\n",
-			_get_rate("div_arm2"));
+		clk_hw_get_rate(hws[CLK_DIV_ARM2]));
 }
 CLK_OF_DECLARE_DRIVER(exynos5250_clk, "samsung,exynos5250-clock", exynos5250_clk_init);
diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
index 3ccd4eabd2a6..747196bbea2a 100644
--- a/drivers/clk/samsung/clk-exynos5420.c
+++ b/drivers/clk/samsung/clk-exynos5420.c
@@ -1580,7 +1580,7 @@ static void __init exynos5x_clk_init(struct device_node *np,
 			ARRAY_SIZE(exynos5x_fixed_rate_ext_clks),
 			ext_clk_match);
 
-	if (_get_rate("fin_pll") == 24 * MHZ) {
+	if (clk_hw_get_rate(hws[CLK_FIN_PLL]) == 24 * MHZ) {
 		exynos5x_plls[apll].rate_table = exynos5420_pll2550x_24mhz_tbl;
 		exynos5x_plls[epll].rate_table = exynos5420_epll_24mhz_tbl;
 		exynos5x_plls[kpll].rate_table = exynos5420_pll2550x_24mhz_tbl;
diff --git a/drivers/clk/samsung/clk-s3c2410.c b/drivers/clk/samsung/clk-s3c2410.c
index 5831d0606077..3d152a46169b 100644
--- a/drivers/clk/samsung/clk-s3c2410.c
+++ b/drivers/clk/samsung/clk-s3c2410.c
@@ -323,6 +323,7 @@ void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,
 				    void __iomem *base)
 {
 	struct samsung_clk_provider *ctx;
+	struct clk_hw **hws;
 	reg_base = base;
 
 	if (np) {
@@ -332,13 +333,14 @@ void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,
 	}
 
 	ctx = samsung_clk_init(np, reg_base, NR_CLKS);
+	hws = ctx->clk_data.hws;
 
 	/* Register external clocks only in non-dt cases */
 	if (!np)
 		s3c2410_common_clk_register_fixed_ext(ctx, xti_f);
 
 	if (current_soc == S3C2410) {
-		if (_get_rate("xti") == 12 * MHZ) {
+		if (clk_hw_get_rate(hws[XTI]) == 12 * MHZ) {
 			s3c2410_plls[mpll].rate_table = pll_s3c2410_12mhz_tbl;
 			s3c2410_plls[upll].rate_table = pll_s3c2410_12mhz_tbl;
 		}
@@ -348,7 +350,7 @@ void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,
 				ARRAY_SIZE(s3c2410_plls), reg_base);
 
 	} else { /* S3C2440, S3C2442 */
-		if (_get_rate("xti") == 12 * MHZ) {
+		if (clk_hw_get_rate(hws[XTI]) == 12 * MHZ) {
 			/*
 			 * plls follow different calculation schemes, with the
 			 * upll following the same scheme as the s3c2410 plls
diff --git a/drivers/clk/samsung/clk-s3c64xx.c b/drivers/clk/samsung/clk-s3c64xx.c
index 56f95b63f71f..d6b432a26d63 100644
--- a/drivers/clk/samsung/clk-s3c64xx.c
+++ b/drivers/clk/samsung/clk-s3c64xx.c
@@ -394,6 +394,7 @@ void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
 			     void __iomem *base)
 {
 	struct samsung_clk_provider *ctx;
+	struct clk_hw **hws;
 
 	reg_base = base;
 	is_s3c6400 = s3c6400;
@@ -405,6 +406,7 @@ void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
 	}
 
 	ctx = samsung_clk_init(np, reg_base, NR_CLKS);
+	hws = ctx->clk_data.hws;
 
 	/* Register external clocks. */
 	if (!np)
@@ -459,8 +461,10 @@ void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
 	pr_info("%s clocks: apll = %lu, mpll = %lu\n"
 		"\tepll = %lu, arm_clk = %lu\n",
 		is_s3c6400 ? "S3C6400" : "S3C6410",
-		_get_rate("fout_apll"),	_get_rate("fout_mpll"),
-		_get_rate("fout_epll"), _get_rate("armclk"));
+		clk_hw_get_rate(hws[MOUT_APLL]),
+		clk_hw_get_rate(hws[MOUT_MPLL]),
+		clk_hw_get_rate(hws[MOUT_EPLL]),
+		clk_hw_get_rate(hws[ARMCLK]));
 }
 
 static void __init s3c6400_clk_init(struct device_node *np)
diff --git a/drivers/clk/samsung/clk-s5pv210.c b/drivers/clk/samsung/clk-s5pv210.c
index e7b68ffe36de..4425186bdcab 100644
--- a/drivers/clk/samsung/clk-s5pv210.c
+++ b/drivers/clk/samsung/clk-s5pv210.c
@@ -741,8 +741,10 @@ static void __init __s5pv210_clk_init(struct device_node *np,
 				      bool is_s5p6442)
 {
 	struct samsung_clk_provider *ctx;
+	struct clk_hw **hws;
 
 	ctx = samsung_clk_init(np, reg_base, NR_CLKS);
+	hws = ctx->clk_data.hws;
 
 	samsung_clk_register_mux(ctx, early_mux_clks,
 					ARRAY_SIZE(early_mux_clks));
@@ -789,8 +791,10 @@ static void __init __s5pv210_clk_init(struct device_node *np,
 	pr_info("%s clocks: mout_apll = %ld, mout_mpll = %ld\n"
 		"\tmout_epll = %ld, mout_vpll = %ld\n",
 		is_s5p6442 ? "S5P6442" : "S5PV210",
-		_get_rate("mout_apll"), _get_rate("mout_mpll"),
-		_get_rate("mout_epll"), _get_rate("mout_vpll"));
+		clk_hw_get_rate(hws[MOUT_APLL]),
+		clk_hw_get_rate(hws[MOUT_MPLL]),
+		clk_hw_get_rate(hws[MOUT_EPLL]),
+		clk_hw_get_rate(hws[MOUT_VPLL]));
 }
 
 static void __init s5pv210_clk_dt_init(struct device_node *np)
diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c
index 336243c6f120..bca4731b14ea 100644
--- a/drivers/clk/samsung/clk.c
+++ b/drivers/clk/samsung/clk.c
@@ -268,20 +268,6 @@ void __init samsung_clk_of_register_fixed_ext(struct samsung_clk_provider *ctx,
 	samsung_clk_register_fixed_rate(ctx, fixed_rate_clk, nr_fixed_rate_clk);
 }
 
-/* utility function to get the rate of a specified clock */
-unsigned long _get_rate(const char *clk_name)
-{
-	struct clk *clk;
-
-	clk = __clk_lookup(clk_name);
-	if (!clk) {
-		pr_err("%s: could not find clock %s\n", __func__, clk_name);
-		return 0;
-	}
-
-	return clk_get_rate(clk);
-}
-
 #ifdef CONFIG_PM_SLEEP
 static int samsung_clk_suspend(void)
 {
diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h
index 26499e97275b..b23776d540eb 100644
--- a/drivers/clk/samsung/clk.h
+++ b/drivers/clk/samsung/clk.h
@@ -381,8 +381,6 @@ extern struct samsung_clk_provider __init *samsung_cmu_register_one(
 			struct device_node *,
 			const struct samsung_cmu_info *);
 
-extern unsigned long _get_rate(const char *clk_name);
-
 #ifdef CONFIG_PM_SLEEP
 extern void samsung_clk_extended_sleep_init(void __iomem *reg_base,
 			const unsigned long *rdump,
-- 
2.17.1

Re: [PATCH v2 1/2] dt-bindings: clock: samsung: add IDs for some core clocks

[Sylwester Nawrocki]

On 18.10.2021 14:54, Marek Szyprowski wrote:
> Add IDs for some core clocks referenced during the boot process.
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

Applied, thanks.

Re: [PATCH v2 2/2] clk: samsung: remove __clk_lookup() usage

[Sylwester Nawrocki]

On 18.10.2021 14:54, Marek Szyprowski wrote:
> __clk_lookup() interface is obsolete, so remove it from the Samsung clock
> drivers. This has been achieved by getting rid of custom _get_rate()
> helper and replacing it with clk_hw_get_rate().
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
> Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
> ---
> v2: moved include/dt-bindings/clock/exynos*.h changes to separate file

Patch applied, thank you.