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clk: at91: clk-peripheral: add support for parent_hw

Browse source 
Add support for parent_hw in peripheral clock drivers.
With this parent-child relation is described with pointers rather
than strings making registration a bit faster.

All the SoC based drivers that rely on clk-peripheral were adapted
to the new API change. The switch itself for SoCs will be done
in subsequent patches.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20230615093227.576102-5-claudiu.beznea@microchip.com
This commit is contained in:
Claudiu Beznea 2023-06-15 12:32:20 +03:00
parent 171e502c6a
commit c2f2ca0be8
14 changed files with 34 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/clk/at91/at91rm9200.c
View file

@ -193,7 +193,7 @@ static void __init at91rm9200_pmc_setup(struct device_node *np)
for (i = 0; i < ARRAY_SIZE(at91rm9200_periphck); i++) {
hw = at91_clk_register_peripheral(regmap,
at91rm9200_periphck[i].n,
"masterck_div",
"masterck_div", NULL,
at91rm9200_periphck[i].id);
if (IS_ERR(hw))
goto err_free;

2
drivers/clk/at91/at91sam9260.c
View file

@ -470,7 +470,7 @@ static void __init at91sam926x_pmc_setup(struct device_node *np,
for (i = 0; i < data->num_pck; i++) {
hw = at91_clk_register_peripheral(regmap,
data->pck[i].n,
"masterck_div",
"masterck_div", NULL,
data->pck[i].id);
if (IS_ERR(hw))
goto err_free;

2
drivers/clk/at91/at91sam9g45.c
View file

@ -214,7 +214,7 @@ static void __init at91sam9g45_pmc_setup(struct device_node *np)
for (i = 0; i < ARRAY_SIZE(at91sam9g45_periphck); i++) {
hw = at91_clk_register_peripheral(regmap,
at91sam9g45_periphck[i].n,
"masterck_div",
"masterck_div", NULL,
at91sam9g45_periphck[i].id);
if (IS_ERR(hw))
goto err_free;

2
drivers/clk/at91/at91sam9n12.c
View file

@ -240,7 +240,7 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&at91sam9n12_pcr_layout,
at91sam9n12_periphck[i].n,
"masterck_div",
"masterck_div", NULL,
at91sam9n12_periphck[i].id,
&range, INT_MIN, 0);
if (IS_ERR(hw))

2
drivers/clk/at91/at91sam9rl.c
View file

@ -170,7 +170,7 @@ static void __init at91sam9rl_pmc_setup(struct device_node *np)
for (i = 0; i < ARRAY_SIZE(at91sam9rl_periphck); i++) {
hw = at91_clk_register_peripheral(regmap,
at91sam9rl_periphck[i].n,
"masterck_div",
"masterck_div", NULL,
at91sam9rl_periphck[i].id);
if (IS_ERR(hw))
goto err_free;

4
drivers/clk/at91/at91sam9x5.c
View file

@ -274,7 +274,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np,
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&at91sam9x5_pcr_layout,
at91sam9x5_periphck[i].n,
"masterck_div",
"masterck_div", NULL,
at91sam9x5_periphck[i].id,
&range, INT_MIN, 0);
if (IS_ERR(hw))
@ -287,7 +287,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np,
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&at91sam9x5_pcr_layout,
extra_pcks[i].n,
"masterck_div",
"masterck_div", NULL,
extra_pcks[i].id,
&range, INT_MIN, 0);
if (IS_ERR(hw))

22
drivers/clk/at91/clk-peripheral.c
View file

@ -97,14 +97,15 @@ static const struct clk_ops peripheral_ops = {
struct clk_hw * __init
at91_clk_register_peripheral(struct regmap *regmap, const char *name,
const char *parent_name, u32 id)
const char *parent_name, struct clk_hw *parent_hw,
u32 id)
{
struct clk_peripheral *periph;
struct clk_init_data init;
struct clk_init_data init = {};
struct clk_hw *hw;
int ret;
if (!name || !parent_name || id > PERIPHERAL_ID_MAX)
if (!name || !(parent_name || parent_hw) || id > PERIPHERAL_ID_MAX)
return ERR_PTR(-EINVAL);
periph = kzalloc(sizeof(*periph), GFP_KERNEL);
@ -113,7 +114,10 @@ at91_clk_register_peripheral(struct regmap *regmap, const char *name,
init.name = name;
init.ops = &peripheral_ops;
init.parent_names = &parent_name;
if (parent_hw)
init.parent_hws = (const struct clk_hw **)&parent_hw;
else
init.parent_names = &parent_name;
init.num_parents = 1;
init.flags = 0;
@ -444,15 +448,16 @@ struct clk_hw * __init
at91_clk_register_sam9x5_peripheral(struct regmap *regmap, spinlock_t *lock,
const struct clk_pcr_layout *layout,
const char *name, const char *parent_name,
struct clk_hw *parent_hw,
u32 id, const struct clk_range *range,
int chg_pid, unsigned long flags)
{
struct clk_sam9x5_peripheral *periph;
struct clk_init_data init;
struct clk_init_data init = {};
struct clk_hw *hw;
int ret;
if (!name || !parent_name)
if (!name || !(parent_name || parent_hw))
return ERR_PTR(-EINVAL);
periph = kzalloc(sizeof(*periph), GFP_KERNEL);
@ -460,7 +465,10 @@ at91_clk_register_sam9x5_peripheral(struct regmap *regmap, spinlock_t *lock,
return ERR_PTR(-ENOMEM);
init.name = name;
init.parent_names = &parent_name;
if (parent_hw)
init.parent_hws = (const struct clk_hw **)&parent_hw;
else
init.parent_names = &parent_name;
init.num_parents = 1;
init.flags = flags;
if (chg_pid < 0) {

3
drivers/clk/at91/dt-compat.c
View file

@ -490,7 +490,7 @@ of_at91_clk_periph_setup(struct device_node *np, u8 type)
if (type == PERIPHERAL_AT91RM9200) {
hw = at91_clk_register_peripheral(regmap, name,
parent_name, id);
parent_name, NULL, id);
} else {
struct clk_range range = CLK_RANGE(0, 0);
unsigned long flags = 0;
@ -512,6 +512,7 @@ of_at91_clk_periph_setup(struct device_node *np, u8 type)
&dt_pcr_layout,
name,
parent_name,
NULL,
id, &range,
INT_MIN,
flags);

4
drivers/clk/at91/pmc.h
View file

@ -199,11 +199,13 @@ at91_clk_sama7g5_register_master(struct regmap *regmap,
struct clk_hw * __init
at91_clk_register_peripheral(struct regmap *regmap, const char *name,
const char *parent_name, u32 id);
const char *parent_name, struct clk_hw *parent_hw,
u32 id);
struct clk_hw * __init
at91_clk_register_sam9x5_peripheral(struct regmap *regmap, spinlock_t *lock,
const struct clk_pcr_layout *layout,
const char *name, const char *parent_name,
struct clk_hw *parent_hw,
u32 id, const struct clk_range *range,
int chg_pid, unsigned long flags);

2
drivers/clk/at91/sam9x60.c
View file

@ -337,7 +337,7 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sam9x60_pcr_layout,
sam9x60_periphck[i].n,
"masterck_div",
"masterck_div", NULL,
sam9x60_periphck[i].id,
&range, INT_MIN,
sam9x60_periphck[i].flags);

4
drivers/clk/at91/sama5d2.c
View file

@ -324,7 +324,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama5d2_pcr_layout,
sama5d2_periphck[i].n,
"masterck_div",
"masterck_div", NULL,
sama5d2_periphck[i].id,
&range, INT_MIN,
sama5d2_periphck[i].flags);
@ -338,7 +338,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama5d2_pcr_layout,
sama5d2_periph32ck[i].n,
"h32mxck",
"h32mxck", NULL,
sama5d2_periph32ck[i].id,
&sama5d2_periph32ck[i].r,
INT_MIN, 0);

2
drivers/clk/at91/sama5d3.c
View file

@ -244,7 +244,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama5d3_pcr_layout,
sama5d3_periphck[i].n,
"masterck_div",
"masterck_div", NULL,
sama5d3_periphck[i].id,
&sama5d3_periphck[i].r,
INT_MIN,

4
drivers/clk/at91/sama5d4.c
View file

@ -267,7 +267,7 @@ static void __init sama5d4_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama5d4_pcr_layout,
sama5d4_periphck[i].n,
"masterck_div",
"masterck_div", NULL,
sama5d4_periphck[i].id,
&range, INT_MIN,
sama5d4_periphck[i].flags);
@ -281,7 +281,7 @@ static void __init sama5d4_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama5d4_pcr_layout,
sama5d4_periph32ck[i].n,
"h32mxck",
"h32mxck", NULL,
sama5d4_periph32ck[i].id,
&range, INT_MIN, 0);
if (IS_ERR(hw))

2
drivers/clk/at91/sama7g5.c
View file

@ -1079,7 +1079,7 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama7g5_pcr_layout,
sama7g5_periphck[i].n,
sama7g5_periphck[i].p,
sama7g5_periphck[i].p, NULL,
sama7g5_periphck[i].id,
&sama7g5_periphck[i].r,
sama7g5_periphck[i].chgp ? 0 :