clk: imx: scu: add gpr clocks support

SCU clock protocol supports a few clocks based on GPR controller
registers including mux/divider/gate.
Add a generic clock register API to support them all.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/clk/imx/clk-scu.h b/drivers/clk/imx/clk-scu.h
index a6c6d3103e94..8ebee0cb0fe6 100644
--- a/drivers/clk/imx/clk-scu.h
+++ b/drivers/clk/imx/clk-scu.h
@@ -10,6 +10,10 @@
 #include <linux/firmware/imx/sci.h>
 #include <linux/of.h>
 
+#define IMX_SCU_GPR_CLK_GATE	BIT(0)
+#define IMX_SCU_GPR_CLK_DIV	BIT(1)
+#define IMX_SCU_GPR_CLK_MUX	BIT(2)
+
 extern struct list_head imx_scu_clks[];
 extern const struct dev_pm_ops imx_clk_lpcg_scu_pm_ops;
 
@@ -31,6 +35,10 @@ struct clk_hw *__imx_clk_lpcg_scu(struct device *dev, const char *name,
 				  void __iomem *reg, u8 bit_idx, bool hw_gate);
 void imx_clk_lpcg_scu_unregister(struct clk_hw *hw);
 
+struct clk_hw *__imx_clk_gpr_scu(const char *name, const char * const *parent_name,
+				 int num_parents, u32 rsrc_id, u8 gpr_id, u8 flags,
+				 bool invert);
+
 static inline struct clk_hw *imx_clk_scu(const char *name, u32 rsrc_id,
 					 u8 clk_type)
 {
@@ -58,4 +66,25 @@ static inline struct clk_hw *imx_clk_lpcg_scu(const char *name, const char *pare
 	return __imx_clk_lpcg_scu(NULL, name, parent_name, flags, reg,
 				  bit_idx, hw_gate);
 }
+
+static inline struct clk_hw *imx_clk_gate_gpr_scu(const char *name, const char *parent_name,
+						  u32 rsrc_id, u8 gpr_id, bool invert)
+{
+	return __imx_clk_gpr_scu(name, &parent_name, 1, rsrc_id, gpr_id,
+				 IMX_SCU_GPR_CLK_GATE, invert);
+}
+
+static inline struct clk_hw *imx_clk_divider_gpr_scu(const char *name, const char *parent_name,
+						     u32 rsrc_id, u8 gpr_id)
+{
+	return __imx_clk_gpr_scu(name, &parent_name, 1, rsrc_id, gpr_id,
+				 IMX_SCU_GPR_CLK_DIV, 0);
+}
+
+static inline struct clk_hw *imx_clk_mux_gpr_scu(const char *name, const char * const *parent_names,
+						 int num_parents, u32 rsrc_id, u8 gpr_id)
+{
+	return __imx_clk_gpr_scu(name, parent_names, num_parents, rsrc_id,
+				 gpr_id, IMX_SCU_GPR_CLK_MUX, 0);
+}
 #endif