clk: rockchip: Add MUXTBL variant

Add a clock branch consisting of a mux with non-standard
select values. The parent in Mux table is sorted by priority.
Use clk_register_mux_table() to register such a mux-clock.

Cc: [email protected]
Cc: Michael Turquette <[email protected]>
Cc: Stephen Boyd <[email protected]>
Signed-off-by: Elaine Zhang <[email protected]>
Signed-off-by: Jagan Teki <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Heiko Stuebner <[email protected]>

Author: Elaine Zhang

drivers/clk/rockchip/clk.c

@@ -40,6 +40,7 @@ static struct clk *rockchip_clk_register_branch(const char *name,
 		const char *const *parent_names, u8 num_parents,
 		void __iomem *base,
 		int muxdiv_offset, u8 mux_shift, u8 mux_width, u8 mux_flags,
+		u32 *mux_table,
 		int div_offset, u8 div_shift, u8 div_width, u8 div_flags,
 		struct clk_div_table *div_table, int gate_offset,
 		u8 gate_shift, u8 gate_flags, unsigned long flags,
@@ -62,6 +63,7 @@ static struct clk *rockchip_clk_register_branch(const char *name,
 		mux->shift = mux_shift;
 		mux->mask = BIT(mux_width) - 1;
 		mux->flags = mux_flags;
+		mux->table = mux_table;
 		mux->lock = lock;
 		mux_ops = (mux_flags & CLK_MUX_READ_ONLY) ? &clk_mux_ro_ops
 							: &clk_mux_ops;
@@ -270,6 +272,8 @@ static struct clk *rockchip_clk_register_frac_branch(
 		frac_mux->shift = child->mux_shift;
 		frac_mux->mask = BIT(child->mux_width) - 1;
 		frac_mux->flags = child->mux_flags;
+		if (child->mux_table)
+			frac_mux->table = child->mux_table;
 		frac_mux->lock = lock;
 		frac_mux->hw.init = &init;
 
@@ -444,11 +448,21 @@ void rockchip_clk_register_branches(struct rockchip_clk_provider *ctx,
 		/* catch simple muxes */
 		switch (list->branch_type) {
 		case branch_mux:
-			clk = clk_register_mux(NULL, list->name,
-				list->parent_names, list->num_parents,
-				flags, ctx->reg_base + list->muxdiv_offset,
-				list->mux_shift, list->mux_width,
-				list->mux_flags, &ctx->lock);
+			if (list->mux_table)
+				clk = clk_register_mux_table(NULL, list->name,
+					list->parent_names, list->num_parents,
+					flags,
+					ctx->reg_base + list->muxdiv_offset,
+					list->mux_shift, list->mux_width,
+					list->mux_flags, list->mux_table,
+					&ctx->lock);
+			else
+				clk = clk_register_mux(NULL, list->name,
+					list->parent_names, list->num_parents,
+					flags,
+					ctx->reg_base + list->muxdiv_offset,
+					list->mux_shift, list->mux_width,
+					list->mux_flags, &ctx->lock);
 			break;
 		case branch_muxgrf:
 			clk = rockchip_clk_register_muxgrf(list->name,
@@ -506,7 +520,8 @@ void rockchip_clk_register_branches(struct rockchip_clk_provider *ctx,
 				ctx->reg_base, list->muxdiv_offset,
 				list->mux_shift,
 				list->mux_width, list->mux_flags,
-				list->div_offset, list->div_shift, list->div_width,
+				list->mux_table, list->div_offset,
+				list->div_shift, list->div_width,
 				list->div_flags, list->div_table,
 				list->gate_offset, list->gate_shift,
 				list->gate_flags, flags, &ctx->lock);

drivers/clk/rockchip/clk.h

@@ -448,6 +448,7 @@ struct rockchip_clk_branch {
 	u8				mux_shift;
 	u8				mux_width;
 	u8				mux_flags;
+	u32				*mux_table;
 	int				div_offset;
 	u8				div_shift;
 	u8				div_width;
@@ -680,6 +681,22 @@ struct rockchip_clk_branch {
 		.gate_offset	= -1,				\
 	}
 
+#define MUXTBL(_id, cname, pnames, f, o, s, w, mf, mt)		\
+	{							\
+		.id		= _id,				\
+		.branch_type	= branch_mux,			\
+		.name		= cname,			\
+		.parent_names	= pnames,			\
+		.num_parents	= ARRAY_SIZE(pnames),		\
+		.flags		= f,				\
+		.muxdiv_offset	= o,				\
+		.mux_shift	= s,				\
+		.mux_width	= w,				\
+		.mux_flags	= mf,				\
+		.gate_offset	= -1,				\
+		.mux_table	= mt,				\
+	}
+
 #define MUXGRF(_id, cname, pnames, f, o, s, w, mf)		\
 	{							\
 		.id		= _id,				\