clk: samsung: Add Exynos5 sub-CMU clock driver

Exynos5250/5420/5800 have only one clock controller, but some of their
clock depends on respective power domains. Handling integration of clock
controller and power domain can be done using runtime PM feature of CCF
framework. This however needs a separate struct device for each power
domain. This patch adds such separate driver for a group of such clocks,
which can be instantiated more than once, each time for a different
power domain.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/clk/samsung/clk-exynos5-subcmu.h b/drivers/clk/samsung/clk-exynos5-subcmu.h
new file mode 100644
index 000000000000..755ee8aaa3de
--- /dev/null
+++ b/drivers/clk/samsung/clk-exynos5-subcmu.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __CLK_EXYNOS5_SUBCMU_H
+#define __CLK_EXYNOS5_SUBCMU_H
+
+struct exynos5_subcmu_reg_dump {
+	u32 offset;
+	u32 value;
+	u32 mask;
+	u32 save;
+};
+
+struct exynos5_subcmu_info {
+	const struct samsung_div_clock *div_clks;
+	unsigned int nr_div_clks;
+	const struct samsung_gate_clock *gate_clks;
+	unsigned int nr_gate_clks;
+	struct exynos5_subcmu_reg_dump *suspend_regs;
+	unsigned int nr_suspend_regs;
+	const char *pd_name;
+};
+
+void exynos5_subcmus_init(struct samsung_clk_provider *ctx, int nr_cmus,
+			  const struct exynos5_subcmu_info *cmu);
+
+#endif