clk: at91: clk-generated: add mux_table option

Add mux table option. This is necessary for IP versions that has
gaps in the range of available clock sources (e.g. SAMA7G5).

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/1595403506-8209-12-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/at91/clk-generated.c

@@ -23,6 +23,7 @@ struct clk_generated {
 	struct regmap *regmap;
 	struct clk_range range;
 	spinlock_t *lock;
+	u32 *mux_table;
 	u32 id;
 	u32 gckdiv;
 	const struct clk_pcr_layout *layout;
@@ -201,7 +202,11 @@ static int clk_generated_set_parent(struct clk_hw *hw, u8 index)
 	if (index >= clk_hw_get_num_parents(hw))
 		return -EINVAL;
 
-	gck->parent_id = index;
+	if (gck->mux_table)
+		gck->parent_id = clk_mux_index_to_val(gck->mux_table, 0, index);
+	else
+		gck->parent_id = index;
+
 	return 0;
 }
 
@@ -273,8 +278,9 @@ struct clk_hw * __init
 at91_clk_register_generated(struct regmap *regmap, spinlock_t *lock,
 			    const struct clk_pcr_layout *layout,
 			    const char *name, const char **parent_names,
-			    u8 num_parents, u8 id,
-			    const struct clk_range *range, int chg_pid)
+			    u32 *mux_table, u8 num_parents, u8 id,
+			    const struct clk_range *range,
+			    int chg_pid)
 {
 	struct clk_generated *gck;
 	struct clk_init_data init;
@@ -300,6 +306,7 @@ at91_clk_register_generated(struct regmap *regmap, spinlock_t *lock,
 	gck->range = *range;
 	gck->chg_pid = chg_pid;
 	gck->layout = layout;
+	gck->mux_table = mux_table;
 
 	clk_generated_startup(gck);
 	hw = &gck->hw;

drivers/clk/at91/dt-compat.c

@@ -158,8 +158,9 @@ static void __init of_sama5d2_clk_generated_setup(struct device_node *np)
 
 		hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
 						 &dt_pcr_layout, name,
-						 parent_names, num_parents,
-						 id, &range, chg_pid);
+						 parent_names, NULL,
+						 num_parents, id, &range,
+						 chg_pid);
 		if (IS_ERR(hw))
 			continue;
 

drivers/clk/at91/pmc.h

@@ -122,7 +122,7 @@ struct clk_hw * __init
 at91_clk_register_generated(struct regmap *regmap, spinlock_t *lock,
 			    const struct clk_pcr_layout *layout,
 			    const char *name, const char **parent_names,
-			    u8 num_parents, u8 id,
+			    u32 *mux_table, u8 num_parents, u8 id,
 			    const struct clk_range *range, int chg_pid);
 
 struct clk_hw * __init

drivers/clk/at91/sam9x60.c

@@ -288,7 +288,7 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
 		hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
 						 &sam9x60_pcr_layout,
 						 sam9x60_gck[i].n,
-						 parent_names, 6,
+						 parent_names, NULL, 6,
 						 sam9x60_gck[i].id,
 						 &sam9x60_gck[i].r, INT_MIN);
 		if (IS_ERR(hw))

drivers/clk/at91/sama5d2.c

@@ -321,7 +321,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
 		hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
 						 &sama5d2_pcr_layout,
 						 sama5d2_gck[i].n,
-						 parent_names, 6,
+						 parent_names, NULL, 6,
 						 sama5d2_gck[i].id,
 						 &sama5d2_gck[i].r,
 						 sama5d2_gck[i].chg_pid);