[PATCH v2 4/9] phy: ti: j721e-wiz: Remove "regmap_field" from wiz_clk_{mux|div}_sel

Kishon Vijay Abraham I
2021-02-22T11:26:10Z

Both "struct wiz_clk_div_sel" and "struct wiz_clk_mux_sel" are static
data that is common for all wiz instances. Including
"struct regmap_field" for each of the wiz instances can yield undesirable
results. Move "struct regmap_field" out of "struct wiz_clk_div_sel" and
"struct wiz_clk_mux_sel" and make them point to constant data.

So far no issues are observed since both these structures are not
accessed outside the probe.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/phy/ti/phy-j721e-wiz.c | 75 +++++++++++++++-------------------
1 file changed, 34 insertions(+), 41 deletions(-)

diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index c9cfafe89cbf..956a93d96d9b 100644
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -107,7 +107,7 @@ static const struct reg_field typec_ln10_swap =
struct wiz_clk_mux {
struct clk_hw hw;
struct regmap_field *field;
- u32 *table;
+ const u32 *table;
struct clk_init_data clk_data;
};

@@ -123,18 +123,16 @@ struct wiz_clk_divider {
#define to_wiz_clk_div(_hw) container_of(_hw, struct wiz_clk_divider, hw)

struct wiz_clk_mux_sel {
- struct regmap_field *field;
u32 table[4];
const char *node_name;
};

struct wiz_clk_div_sel {
- struct regmap_field *field;
- const struct clk_div_table *table;
+ const struct clk_div_table *table;
const char *node_name;
};

-static struct wiz_clk_mux_sel clk_mux_sel_16g[] = {
+static const struct wiz_clk_mux_sel clk_mux_sel_16g[] = {
{
/*
* Mux value to be configured for each of the input clocks
@@ -153,7 +151,7 @@ static struct wiz_clk_mux_sel clk_mux_sel_16g[] = {
},
};

-static struct wiz_clk_mux_sel clk_mux_sel_10g[] = {
+static const struct wiz_clk_mux_sel clk_mux_sel_10g[] = {
{
/*
* Mux value to be configured for each of the input clocks
@@ -179,7 +177,7 @@ static const struct clk_div_table clk_div_table[] = {
{ .val = 3, .div = 8, },
};

-static struct wiz_clk_div_sel clk_div_sel[] = {
+static const struct wiz_clk_div_sel clk_div_sel[] = {
{
.table = clk_div_table,
.node_name = "cmn-refclk-dig-div",
@@ -201,8 +199,8 @@ enum wiz_type {
struct wiz {
struct regmap *regmap;
enum wiz_type type;
- struct wiz_clk_mux_sel *clk_mux_sel;
- struct wiz_clk_div_sel *clk_div_sel;
+ const struct wiz_clk_mux_sel *clk_mux_sel;
+ const struct wiz_clk_div_sel *clk_div_sel;
unsigned int clk_div_sel_num;
struct regmap_field *por_en;
struct regmap_field *phy_reset_n;
@@ -214,6 +212,8 @@ struct wiz {
struct regmap_field *pma_cmn_refclk_mode;
struct regmap_field *pma_cmn_refclk_dig_div;
struct regmap_field *pma_cmn_refclk1_dig_div;
+ struct regmap_field *mux_sel_field[WIZ_MUX_NUM_CLOCKS];
+ struct regmap_field *div_sel_field[WIZ_DIV_NUM_CLOCKS_16G];
struct regmap_field *typec_ln10_swap;

struct device *dev;
@@ -310,8 +310,6 @@ static int wiz_init(struct wiz *wiz)

static int wiz_regfield_init(struct wiz *wiz)
{
- struct wiz_clk_mux_sel *clk_mux_sel;
- struct wiz_clk_div_sel *clk_div_sel;
struct regmap *regmap = wiz->regmap;
int num_lanes = wiz->num_lanes;
struct device *dev = wiz->dev;
@@ -344,54 +342,49 @@ static int wiz_regfield_init(struct wiz *wiz)
return PTR_ERR(wiz->pma_cmn_refclk_mode);
}

- clk_div_sel = &wiz->clk_div_sel[CMN_REFCLK_DIG_DIV];
- clk_div_sel->field = devm_regmap_field_alloc(dev, regmap,
- pma_cmn_refclk_dig_div);
- if (IS_ERR(clk_div_sel->field)) {
+ wiz->div_sel_field[CMN_REFCLK_DIG_DIV] =
+ devm_regmap_field_alloc(dev, regmap, pma_cmn_refclk_dig_div);
+ if (IS_ERR(wiz->div_sel_field[CMN_REFCLK_DIG_DIV])) {
dev_err(dev, "PMA_CMN_REFCLK_DIG_DIV reg field init failed\n");
- return PTR_ERR(clk_div_sel->field);
+ return PTR_ERR(wiz->div_sel_field[CMN_REFCLK_DIG_DIV]);
}

if (wiz->type == J721E_WIZ_16G) {
- clk_div_sel = &wiz->clk_div_sel[CMN_REFCLK1_DIG_DIV];
- clk_div_sel->field =
+ wiz->div_sel_field[CMN_REFCLK1_DIG_DIV] =
devm_regmap_field_alloc(dev, regmap,
pma_cmn_refclk1_dig_div);
- if (IS_ERR(clk_div_sel->field)) {
+ if (IS_ERR(wiz->div_sel_field[CMN_REFCLK1_DIG_DIV])) {
dev_err(dev, "PMA_CMN_REFCLK1_DIG_DIV reg field init failed\n");
- return PTR_ERR(clk_div_sel->field);
+ return PTR_ERR(wiz->div_sel_field[CMN_REFCLK1_DIG_DIV]);
}
}

- clk_mux_sel = &wiz->clk_mux_sel[PLL0_REFCLK];
- clk_mux_sel->field = devm_regmap_field_alloc(dev, regmap,
- pll0_refclk_mux_sel);
- if (IS_ERR(clk_mux_sel->field)) {
+ wiz->mux_sel_field[PLL0_REFCLK] =
+ devm_regmap_field_alloc(dev, regmap, pll0_refclk_mux_sel);
+ if (IS_ERR(wiz->mux_sel_field[PLL0_REFCLK])) {
dev_err(dev, "PLL0_REFCLK_SEL reg field init failed\n");
- return PTR_ERR(clk_mux_sel->field);
+ return PTR_ERR(wiz->mux_sel_field[PLL0_REFCLK]);
}

- clk_mux_sel = &wiz->clk_mux_sel[PLL1_REFCLK];
- clk_mux_sel->field = devm_regmap_field_alloc(dev, regmap,
- pll1_refclk_mux_sel);
- if (IS_ERR(clk_mux_sel->field)) {
+ wiz->mux_sel_field[PLL1_REFCLK] =
+ devm_regmap_field_alloc(dev, regmap, pll1_refclk_mux_sel);
+ if (IS_ERR(wiz->mux_sel_field[PLL1_REFCLK])) {
dev_err(dev, "PLL1_REFCLK_SEL reg field init failed\n");
- return PTR_ERR(clk_mux_sel->field);
+ return PTR_ERR(wiz->mux_sel_field[PLL1_REFCLK]);
}

- clk_mux_sel = &wiz->clk_mux_sel[REFCLK_DIG];
if (wiz->type == J721E_WIZ_10G)
- clk_mux_sel->field =
+ wiz->mux_sel_field[REFCLK_DIG] =
devm_regmap_field_alloc(dev, regmap,
refclk_dig_sel_10g);
else
- clk_mux_sel->field =
+ wiz->mux_sel_field[REFCLK_DIG] =
devm_regmap_field_alloc(dev, regmap,
refclk_dig_sel_16g);

- if (IS_ERR(clk_mux_sel->field)) {
+ if (IS_ERR(wiz->mux_sel_field[REFCLK_DIG])) {
dev_err(dev, "REFCLK_DIG_SEL reg field init failed\n");
- return PTR_ERR(clk_mux_sel->field);
+ return PTR_ERR(wiz->mux_sel_field[REFCLK_DIG]);
}

for (i = 0; i < num_lanes; i++) {
@@ -443,7 +436,7 @@ static u8 wiz_clk_mux_get_parent(struct clk_hw *hw)
unsigned int val;

regmap_field_read(field, &val);
- return clk_mux_val_to_index(hw, mux->table, 0, val);
+ return clk_mux_val_to_index(hw, (u32 *)mux->table, 0, val);
}

static int wiz_clk_mux_set_parent(struct clk_hw *hw, u8 index)
@@ -462,7 +455,7 @@ static const struct clk_ops wiz_clk_mux_ops = {
};

static int wiz_mux_clk_register(struct wiz *wiz, struct device_node *node,
- struct regmap_field *field, u32 *table)
+ struct regmap_field *field, const u32 *table)
{
struct device *dev = wiz->dev;
struct clk_init_data *init;
@@ -606,7 +599,7 @@ static int wiz_div_clk_register(struct wiz *wiz, struct device_node *node,

static void wiz_clock_cleanup(struct wiz *wiz, struct device_node *node)
{
- struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
+ const struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
struct device_node *clk_node;
int i;

@@ -619,7 +612,7 @@ static void wiz_clock_cleanup(struct wiz *wiz, struct device_node *node)

static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
{
- struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
+ const struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
struct device *dev = wiz->dev;
struct device_node *clk_node;
const char *node_name;
@@ -663,7 +656,7 @@ static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
goto err;
}

- ret = wiz_mux_clk_register(wiz, clk_node, clk_mux_sel[i].field,
+ ret = wiz_mux_clk_register(wiz, clk_node, wiz->mux_sel_field[i],
clk_mux_sel[i].table);
if (ret) {
dev_err(dev, "Failed to register %s clock\n",
@@ -684,7 +677,7 @@ static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
goto err;
}

- ret = wiz_div_clk_register(wiz, clk_node, clk_div_sel[i].field,
+ ret = wiz_div_clk_register(wiz, clk_node, wiz->div_sel_field[i],
clk_div_sel[i].table);
if (ret) {
dev_err(dev, "Failed to register %s clock\n",
--
2.17.1