clk: vc5: use a dedicated struct to describe the output drivers

Reusing the generic struct vc5_hw_data for all blocks is handy. However it
implies we allocate space the div_int and div_frc fields even for the
output drivers where they are unused, and the clk_output_cfg0 and
clk_output_cfg0_mask fields for all components even though they are used
only for the output drivers.

Use a dedicated struct for the output drivers so that each block uses
exactly the fields it needs, not more.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Link: https://lore.kernel.org/r/20200723072603.1795-1-luca@lucaceresoli.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
index 32f0aa6..c90460e 100644 (file)
--- a/drivers/clk/clk-versaclock5.c
+++ b/drivers/clk/clk-versaclock5.c
@@ -167,6 +167,12 @@ struct vc5_hw_data {
        u32                     div_int;
        u32                     div_frc;
        unsigned int            num;
+};
+
+struct vc5_out_data {
+       struct clk_hw           hw;
+       struct vc5_driver_data  *vc5;
+       unsigned int            num;
        unsigned int            clk_output_cfg0;
        unsigned int            clk_output_cfg0_mask;
 };
@@ -184,7 +190,7 @@ struct vc5_driver_data {
        struct clk_hw           clk_pfd;
        struct vc5_hw_data      clk_pll;
        struct vc5_hw_data      clk_fod[VC5_MAX_FOD_NUM];
-       struct vc5_hw_data      clk_out[VC5_MAX_CLK_OUT_NUM];
+       struct vc5_out_data     clk_out[VC5_MAX_CLK_OUT_NUM];
 };
 
 /*
@@ -567,7 +573,7 @@ static const struct clk_ops vc5_fod_ops = {
 
 static int vc5_clk_out_prepare(struct clk_hw *hw)
 {
-       struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw);
+       struct vc5_out_data *hwdata = container_of(hw, struct vc5_out_data, hw);
        struct vc5_driver_data *vc5 = hwdata->vc5;
        const u8 mask = VC5_OUT_DIV_CONTROL_SELB_NORM |
                        VC5_OUT_DIV_CONTROL_SEL_EXT |
@@ -609,7 +615,7 @@ static int vc5_clk_out_prepare(struct clk_hw *hw)
 
 static void vc5_clk_out_unprepare(struct clk_hw *hw)
 {
-       struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw);
+       struct vc5_out_data *hwdata = container_of(hw, struct vc5_out_data, hw);
        struct vc5_driver_data *vc5 = hwdata->vc5;
 
        /* Disable the clock buffer */
@@ -619,7 +625,7 @@ static void vc5_clk_out_unprepare(struct clk_hw *hw)
 
 static unsigned char vc5_clk_out_get_parent(struct clk_hw *hw)
 {
-       struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw);
+       struct vc5_out_data *hwdata = container_of(hw, struct vc5_out_data, hw);
        struct vc5_driver_data *vc5 = hwdata->vc5;
        const u8 mask = VC5_OUT_DIV_CONTROL_SELB_NORM |
                        VC5_OUT_DIV_CONTROL_SEL_EXT |
@@ -649,7 +655,7 @@ static unsigned char vc5_clk_out_get_parent(struct clk_hw *hw)
 
 static int vc5_clk_out_set_parent(struct clk_hw *hw, u8 index)
 {
-       struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw);
+       struct vc5_out_data *hwdata = container_of(hw, struct vc5_out_data, hw);
        struct vc5_driver_data *vc5 = hwdata->vc5;
        const u8 mask = VC5_OUT_DIV_CONTROL_RESET |
                        VC5_OUT_DIV_CONTROL_SELB_NORM |
@@ -704,7 +710,7 @@ static int vc5_map_index_to_output(const enum vc5_model model,
 }
 
 static int vc5_update_mode(struct device_node *np_output,
-                          struct vc5_hw_data *clk_out)
+                          struct vc5_out_data *clk_out)
 {
        u32 value;
 
@@ -729,7 +735,7 @@ static int vc5_update_mode(struct device_node *np_output,
 }
 
 static int vc5_update_power(struct device_node *np_output,
-                           struct vc5_hw_data *clk_out)
+                           struct vc5_out_data *clk_out)
 {
        u32 value;
 
@@ -754,7 +760,7 @@ static int vc5_update_power(struct device_node *np_output,
 }
 
 static int vc5_update_slew(struct device_node *np_output,
-                          struct vc5_hw_data *clk_out)
+                          struct vc5_out_data *clk_out)
 {
        u32 value;
 
@@ -782,7 +788,7 @@ static int vc5_update_slew(struct device_node *np_output,
 }
 
 static int vc5_get_output_config(struct i2c_client *client,
-                                struct vc5_hw_data *clk_out)
+                                struct vc5_out_data *clk_out)
 {
        struct device_node *np_output;
        char *child_name;