[PATCH 09/16] clk: samsung: Pass register layout type explicitly to CLK_CPU()

From: Sam Protsenko
Date: Fri Feb 16 2024 - 17:35:03 EST

Make it more obvious which register layout should be used for a CPU
clock. It prepares clk-cpu.c for adding new chips support.

No functional change.

Signed-off-by: Sam Protsenko <semen.protsenko@xxxxxxxxxx>
---
drivers/clk/samsung/clk-cpu.c | 2 +-
drivers/clk/samsung/clk-cpu.h | 12 ++++++++++--
drivers/clk/samsung/clk-exynos3250.c | 2 +-
drivers/clk/samsung/clk-exynos4.c | 6 +++---
drivers/clk/samsung/clk-exynos5250.c | 3 ++-
drivers/clk/samsung/clk-exynos5420.c | 8 ++++----
drivers/clk/samsung/clk-exynos5433.c | 8 ++++----
drivers/clk/samsung/clk.h | 4 +++-
8 files changed, 28 insertions(+), 17 deletions(-)

diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c
index 4c46416281a3..21998c89b96d 100644
--- a/drivers/clk/samsung/clk-cpu.c
+++ b/drivers/clk/samsung/clk-cpu.c
@@ -464,7 +464,7 @@ static int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
cpuclk->lock = &ctx->lock;
cpuclk->flags = clk_data->flags;
cpuclk->clk_nb.notifier_call = exynos_cpuclk_notifier_cb;
- if (clk_data->flags & CLK_CPU_HAS_E5433_REGS_LAYOUT) {
+ if (clk_data->reg_layout == CPUCLK_LAYOUT_E5433) {
cpuclk->pre_rate_cb = exynos5433_cpuclk_pre_rate_change;
cpuclk->post_rate_cb = exynos5433_cpuclk_post_rate_change;
} else {
diff --git a/drivers/clk/samsung/clk-cpu.h b/drivers/clk/samsung/clk-cpu.h
index ee57f3638fed..4382ab005ad3 100644
--- a/drivers/clk/samsung/clk-cpu.h
+++ b/drivers/clk/samsung/clk-cpu.h
@@ -12,8 +12,16 @@
#define CLK_CPU_HAS_DIV1 BIT(0)
/* When ALT parent is active, debug clocks need safe divider values */
#define CLK_CPU_NEEDS_DEBUG_ALT_DIV BIT(1)
-/* The CPU clock registers have Exynos5433-compatible layout */
-#define CLK_CPU_HAS_E5433_REGS_LAYOUT BIT(2)
+
+/**
+ * enum exynos_cpuclk_layout - CPU clock registers layout compatibility
+ * @CPUCLK_LAYOUT_E4210: Exynos4210 compatible layout
+ * @CPUCLK_LAYOUT_E5433: Exynos5433 compatible layout
+ */
+enum exynos_cpuclk_layout {
+ CPUCLK_LAYOUT_E4210,
+ CPUCLK_LAYOUT_E5433,
+};

/**
* struct exynos_cpuclk_cfg_data - config data to setup cpu clocks
diff --git a/drivers/clk/samsung/clk-exynos3250.c b/drivers/clk/samsung/clk-exynos3250.c
index d1b72a75bc5a..bd017a68163d 100644
--- a/drivers/clk/samsung/clk-exynos3250.c
+++ b/drivers/clk/samsung/clk-exynos3250.c
@@ -773,7 +773,7 @@ static const struct exynos_cpuclk_cfg_data e3250_armclk_d[] __initconst = {

static const struct samsung_cpu_clock exynos3250_cpu_clks[] __initconst = {
CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_MOUT_MPLL_USER_C,
- CLK_CPU_HAS_DIV1, 0x14000, e3250_armclk_d),
+ CLK_CPU_HAS_DIV1, 0x14000, CPUCLK_LAYOUT_E4210, e3250_armclk_d),
};

static void __init exynos3_core_down_clock(void __iomem *reg_base)
diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
index 3d57020a620f..e1b7a5e0dbb8 100644
--- a/drivers/clk/samsung/clk-exynos4.c
+++ b/drivers/clk/samsung/clk-exynos4.c
@@ -1252,19 +1252,19 @@ static const struct exynos_cpuclk_cfg_data e4412_armclk_d[] __initconst = {
static const struct samsung_cpu_clock exynos4210_cpu_clks[] __initconst = {
CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_SCLK_MPLL,
CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1, 0x14000,
- e4210_armclk_d),
+ CPUCLK_LAYOUT_E4210, e4210_armclk_d),
};

static const struct samsung_cpu_clock exynos4212_cpu_clks[] __initconst = {
CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_MOUT_MPLL_USER_C,
CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1, 0x14000,
- e4212_armclk_d),
+ CPUCLK_LAYOUT_E4210, e4212_armclk_d),
};

static const struct samsung_cpu_clock exynos4412_cpu_clks[] __initconst = {
CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_MOUT_MPLL_USER_C,
CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1, 0x14000,
- e4412_armclk_d),
+ CPUCLK_LAYOUT_E4210, e4412_armclk_d),
};

/* register exynos4 clocks */
diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c
index 4953da754994..36d28d466da9 100644
--- a/drivers/clk/samsung/clk-exynos5250.c
+++ b/drivers/clk/samsung/clk-exynos5250.c
@@ -776,7 +776,8 @@ static const struct exynos_cpuclk_cfg_data exynos5250_armclk_d[] __initconst = {

static const struct samsung_cpu_clock exynos5250_cpu_clks[] __initconst = {
CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_MOUT_MPLL,
- CLK_CPU_HAS_DIV1, 0x0, exynos5250_armclk_d),
+ CLK_CPU_HAS_DIV1, 0x0, CPUCLK_LAYOUT_E4210,
+ exynos5250_armclk_d),
};

static const struct of_device_id ext_clk_match[] __initconst = {
diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
index 531ef1c3fa30..f8cd28465b58 100644
--- a/drivers/clk/samsung/clk-exynos5420.c
+++ b/drivers/clk/samsung/clk-exynos5420.c
@@ -1555,16 +1555,16 @@ static const struct exynos_cpuclk_cfg_data exynos5420_kfcclk_d[] __initconst = {

static const struct samsung_cpu_clock exynos5420_cpu_clks[] __initconst = {
CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_MOUT_MSPLL_CPU, 0,
- 0x0, exynos5420_eglclk_d),
+ 0x0, CPUCLK_LAYOUT_E4210, exynos5420_eglclk_d),
CPU_CLK(CLK_KFC_CLK, "kfcclk", CLK_MOUT_KPLL, CLK_MOUT_MSPLL_KFC, 0,
- 0x28000, exynos5420_kfcclk_d),
+ 0x28000, CPUCLK_LAYOUT_E4210, exynos5420_kfcclk_d),
};

static const struct samsung_cpu_clock exynos5800_cpu_clks[] __initconst = {
CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_MOUT_MSPLL_CPU, 0,
- 0x0, exynos5800_eglclk_d),
+ 0x0, CPUCLK_LAYOUT_E4210, exynos5800_eglclk_d),
CPU_CLK(CLK_KFC_CLK, "kfcclk", CLK_MOUT_KPLL, CLK_MOUT_MSPLL_KFC, 0,
- 0x28000, exynos5420_kfcclk_d),
+ 0x28000, CPUCLK_LAYOUT_E4210, exynos5420_kfcclk_d),
};

static const struct of_device_id ext_clk_match[] __initconst = {
diff --git a/drivers/clk/samsung/clk-exynos5433.c b/drivers/clk/samsung/clk-exynos5433.c
index 379744f0a5b6..d35901af21d0 100644
--- a/drivers/clk/samsung/clk-exynos5433.c
+++ b/drivers/clk/samsung/clk-exynos5433.c
@@ -3698,8 +3698,8 @@ static const struct exynos_cpuclk_cfg_data exynos5433_apolloclk_d[] __initconst

static const struct samsung_cpu_clock apollo_cpu_clks[] __initconst = {
CPU_CLK(CLK_SCLK_APOLLO, "apolloclk", CLK_MOUT_APOLLO_PLL,
- CLK_MOUT_BUS_PLL_APOLLO_USER, CLK_CPU_HAS_E5433_REGS_LAYOUT,
- 0x0, exynos5433_apolloclk_d),
+ CLK_MOUT_BUS_PLL_APOLLO_USER, 0, 0x0,
+ CPUCLK_LAYOUT_E5433, exynos5433_apolloclk_d),
};

static const struct samsung_cmu_info apollo_cmu_info __initconst = {
@@ -3942,8 +3942,8 @@ static const struct exynos_cpuclk_cfg_data exynos5433_atlasclk_d[] __initconst =

static const struct samsung_cpu_clock atlas_cpu_clks[] __initconst = {
CPU_CLK(CLK_SCLK_ATLAS, "atlasclk", CLK_MOUT_ATLAS_PLL,
- CLK_MOUT_BUS_PLL_ATLAS_USER, CLK_CPU_HAS_E5433_REGS_LAYOUT,
- 0x0, exynos5433_atlasclk_d),
+ CLK_MOUT_BUS_PLL_ATLAS_USER, 0, 0x0,
+ CPUCLK_LAYOUT_E5433, exynos5433_atlasclk_d),
};

static const struct samsung_cmu_info atlas_cmu_info __initconst = {
diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h
index 8157479f45eb..87bbb8b31b03 100644
--- a/drivers/clk/samsung/clk.h
+++ b/drivers/clk/samsung/clk.h
@@ -283,10 +283,11 @@ struct samsung_cpu_clock {
unsigned int alt_parent_id;
unsigned long flags;
int offset;
+ enum exynos_cpuclk_layout reg_layout;
const struct exynos_cpuclk_cfg_data *cfg;
};

-#define CPU_CLK(_id, _name, _pid, _apid, _flags, _offset, _cfg) \
+#define CPU_CLK(_id, _name, _pid, _apid, _flags, _offset, _layout, _cfg) \
{ \
.id = _id, \
.name = _name, \
@@ -294,6 +295,7 @@ struct samsung_cpu_clock {
.alt_parent_id = _apid, \
.flags = _flags, \
.offset = _offset, \
+ .reg_layout = _layout, \
.cfg = _cfg, \
}

--
2.39.2