[PATCH v2 1/4] clk: meson: g12a-aoclk: migrate to the new parent description method

[Alexandre Mergnat]

This clock controller use the string comparison method to describe parent
relation between the clocks, which is not optimized.

Migrate to the new way by using .parent_hws where possible (when parent
clocks are localy declared in the controller) and use .parent_data
otherwise.

Remove clk input helper and all bypass clocks (declared in probe function)
which are no longer used since we are able to use device-tree clock name
directly.

Signed-off-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
---
 drivers/clk/meson/g12a-aoclk.c | 81 +++++++++++++++++++++-------------
 1 file changed, 50 insertions(+), 31 deletions(-)

diff --git a/drivers/clk/meson/g12a-aoclk.c b/drivers/clk/meson/g12a-aoclk.c
index 1994e735396b..62499563e4f5 100644
--- a/drivers/clk/meson/g12a-aoclk.c
+++ b/drivers/clk/meson/g12a-aoclk.c
@@ -18,8 +18,6 @@
 #include "clk-regmap.h"
 #include "clk-dualdiv.h"
 
-#define IN_PREFIX "ao-in-"
-
 /*
  * AO Configuration Clock registers offsets
  * Register offsets from the data sheet must be multiplied by 4.
@@ -51,7 +49,9 @@ static struct clk_regmap g12a_aoclk_##_name = {				\
 	.hw.init = &(struct clk_init_data) {				\
 		.name =  "g12a_ao_" #_name,				\
 		.ops = &clk_regmap_gate_ops,				\
-		.parent_names = (const char *[]){ IN_PREFIX "mpeg-clk" }, \
+		.parent_data = &(const struct clk_parent_data) {	\
+			.fw_name = "mpeg-clk",				\
+		},							\
 		.num_parents = 1,					\
 		.flags = CLK_IGNORE_UNUSED,				\
 	},								\
@@ -81,7 +81,9 @@ static struct clk_regmap g12a_aoclk_cts_oscin = {
 	.hw.init = &(struct clk_init_data){
 		.name = "cts_oscin",
 		.ops = &clk_regmap_gate_ro_ops,
-		.parent_names = (const char *[]){ IN_PREFIX "xtal" },
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "xtal",
+		},
 		.num_parents = 1,
 	},
 };
@@ -106,7 +108,9 @@ static struct clk_regmap g12a_aoclk_32k_by_oscin_pre = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_32k_by_oscin_pre",
 		.ops = &clk_regmap_gate_ops,
-		.parent_names = (const char *[]){ "cts_oscin" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_cts_oscin.hw
+		},
 		.num_parents = 1,
 	},
 };
@@ -143,7 +147,9 @@ static struct clk_regmap g12a_aoclk_32k_by_oscin_div = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_32k_by_oscin_div",
 		.ops = &meson_clk_dualdiv_ops,
-		.parent_names = (const char *[]){ "g12a_ao_32k_by_oscin_pre" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_32k_by_oscin_pre.hw
+		},
 		.num_parents = 1,
 	},
 };
@@ -158,8 +164,10 @@ static struct clk_regmap g12a_aoclk_32k_by_oscin_sel = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_32k_by_oscin_sel",
 		.ops = &clk_regmap_mux_ops,
-		.parent_names = (const char *[]){ "g12a_ao_32k_by_oscin_div",
-						  "g12a_ao_32k_by_oscin_pre" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_32k_by_oscin_div.hw,
+			&g12a_aoclk_32k_by_oscin_pre.hw,
+		},
 		.num_parents = 2,
 		.flags = CLK_SET_RATE_PARENT,
 	},
@@ -173,7 +181,9 @@ static struct clk_regmap g12a_aoclk_32k_by_oscin = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_32k_by_oscin",
 		.ops = &clk_regmap_gate_ops,
-		.parent_names = (const char *[]){ "g12a_ao_32k_by_oscin_sel" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_32k_by_oscin_sel.hw
+		},
 		.num_parents = 1,
 		.flags = CLK_SET_RATE_PARENT,
 	},
@@ -189,7 +199,9 @@ static struct clk_regmap g12a_aoclk_cec_pre = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_cec_pre",
 		.ops = &clk_regmap_gate_ops,
-		.parent_names = (const char *[]){ "cts_oscin" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_cts_oscin.hw
+		},
 		.num_parents = 1,
 	},
 };
@@ -226,7 +238,9 @@ static struct clk_regmap g12a_aoclk_cec_div = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_cec_div",
 		.ops = &meson_clk_dualdiv_ops,
-		.parent_names = (const char *[]){ "g12a_ao_cec_pre" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_cec_pre.hw
+		},
 		.num_parents = 1,
 	},
 };
@@ -241,8 +255,10 @@ static struct clk_regmap g12a_aoclk_cec_sel = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_cec_sel",
 		.ops = &clk_regmap_mux_ops,
-		.parent_names = (const char *[]){ "g12a_ao_cec_div",
-						  "g12a_ao_cec_pre" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_cec_div.hw,
+			&g12a_aoclk_cec_pre.hw,
+		},
 		.num_parents = 2,
 		.flags = CLK_SET_RATE_PARENT,
 	},
@@ -256,7 +272,9 @@ static struct clk_regmap g12a_aoclk_cec = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_cec",
 		.ops = &clk_regmap_gate_ops,
-		.parent_names = (const char *[]){ "g12a_ao_cec_sel" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_cec_sel.hw
+		},
 		.num_parents = 1,
 		.flags = CLK_SET_RATE_PARENT,
 	},
@@ -272,8 +290,10 @@ static struct clk_regmap g12a_aoclk_cts_rtc_oscin = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_cts_rtc_oscin",
 		.ops = &clk_regmap_mux_ops,
-		.parent_names = (const char *[]){ "g12a_ao_32k_by_oscin",
-						  IN_PREFIX "ext_32k-0" },
+		.parent_data = (const struct clk_parent_data []) {
+			{ .hw = &g12a_aoclk_32k_by_oscin.hw },
+			{ .fw_name = "ext-32k-0", },
+		},
 		.num_parents = 2,
 		.flags = CLK_SET_RATE_PARENT,
 	},
@@ -289,8 +309,10 @@ static struct clk_regmap g12a_aoclk_clk81 = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_clk81",
 		.ops = &clk_regmap_mux_ro_ops,
-		.parent_names = (const char *[]){ IN_PREFIX "mpeg-clk",
-						  "g12a_ao_cts_rtc_oscin"},
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "mpeg-clk", },
+			{ .hw = &g12a_aoclk_cts_rtc_oscin.hw },
+		},
 		.num_parents = 2,
 		.flags = CLK_SET_RATE_PARENT,
 	},
@@ -305,8 +327,10 @@ static struct clk_regmap g12a_aoclk_saradc_mux = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_saradc_mux",
 		.ops = &clk_regmap_mux_ops,
-		.parent_names = (const char *[]){ IN_PREFIX "xtal",
-						  "g12a_ao_clk81" },
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "xtal", },
+			{ .hw = &g12a_aoclk_clk81.hw },
+		},
 		.num_parents = 2,
 	},
 };
@@ -320,7 +344,9 @@ static struct clk_regmap g12a_aoclk_saradc_div = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_saradc_div",
 		.ops = &clk_regmap_divider_ops,
-		.parent_names = (const char *[]){ "g12a_ao_saradc_mux" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_saradc_mux.hw
+		},
 		.num_parents = 1,
 		.flags = CLK_SET_RATE_PARENT,
 	},
@@ -334,7 +360,9 @@ static struct clk_regmap g12a_aoclk_saradc_gate = {
 	.hw.init = &(struct clk_init_data){
 		.name = "g12a_ao_saradc_gate",
 		.ops = &clk_regmap_gate_ops,
-		.parent_names = (const char *[]){ "g12a_ao_saradc_div" },
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_aoclk_saradc_div.hw
+		},
 		.num_parents = 1,
 		.flags = CLK_SET_RATE_PARENT,
 	},
@@ -417,12 +445,6 @@ static const struct clk_hw_onecell_data g12a_aoclk_onecell_data = {
 	.num = NR_CLKS,
 };
 
-static const struct meson_aoclk_input g12a_aoclk_inputs[] = {
-	{ .name = "xtal",	.required = true  },
-	{ .name = "mpeg-clk",	.required = true  },
-	{ .name = "ext-32k-0",	.required = false },
-};
-
 static const struct meson_aoclk_data g12a_aoclkc_data = {
 	.reset_reg	= AO_RTI_GEN_CNTL_REG0,
 	.num_reset	= ARRAY_SIZE(g12a_aoclk_reset),
@@ -430,9 +452,6 @@ static const struct meson_aoclk_data g12a_aoclkc_data = {
 	.num_clks	= ARRAY_SIZE(g12a_aoclk_regmap),
 	.clks		= g12a_aoclk_regmap,
 	.hw_data	= &g12a_aoclk_onecell_data,
-	.inputs		= g12a_aoclk_inputs,
-	.num_inputs	= ARRAY_SIZE(g12a_aoclk_inputs),
-	.input_prefix	= IN_PREFIX,
 };
 
 static const struct of_device_id g12a_aoclkc_match_table[] = {
-- 
2.17.1