[PATCH 09/11] clk: at91: sckc: switch to parent_data/parent_hw
From: Claudiu Beznea
Date: Thu Jun 15 2023 - 05:36:50 EST
Switch slow clock drivers to use parent_data and parent_hw.
With this parent-child relation is described with pointers rather
than strings.
Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
---
drivers/clk/at91/sckc.c | 75 ++++++++++++++++++++++++++---------------
1 file changed, 48 insertions(+), 27 deletions(-)
diff --git a/drivers/clk/at91/sckc.c b/drivers/clk/at91/sckc.c
index fdc9b669f8a7..fdd963eb9f0f 100644
--- a/drivers/clk/at91/sckc.c
+++ b/drivers/clk/at91/sckc.c
@@ -117,17 +117,17 @@ static const struct clk_ops slow_osc_ops = {
static struct clk_hw * __init
at91_clk_register_slow_osc(void __iomem *sckcr,
const char *name,
- const char *parent_name,
+ const struct clk_parent_data *parent_data,
unsigned long startup,
bool bypass,
const struct clk_slow_bits *bits)
{
struct clk_slow_osc *osc;
struct clk_hw *hw;
- struct clk_init_data init;
+ struct clk_init_data init = {};
int ret;
- if (!sckcr || !name || !parent_name)
+ if (!sckcr || !name || !parent_data)
return ERR_PTR(-EINVAL);
osc = kzalloc(sizeof(*osc), GFP_KERNEL);
@@ -136,7 +136,7 @@ at91_clk_register_slow_osc(void __iomem *sckcr,
init.name = name;
init.ops = &slow_osc_ops;
- init.parent_names = &parent_name;
+ init.parent_data = parent_data;
init.num_parents = 1;
init.flags = CLK_IGNORE_UNUSED;
@@ -317,16 +317,16 @@ static const struct clk_ops sam9x5_slow_ops = {
static struct clk_hw * __init
at91_clk_register_sam9x5_slow(void __iomem *sckcr,
const char *name,
- const char **parent_names,
+ const struct clk_hw **parent_hws,
int num_parents,
const struct clk_slow_bits *bits)
{
struct clk_sam9x5_slow *slowck;
struct clk_hw *hw;
- struct clk_init_data init;
+ struct clk_init_data init = {};
int ret;
- if (!sckcr || !name || !parent_names || !num_parents)
+ if (!sckcr || !name || !parent_hws || !num_parents)
return ERR_PTR(-EINVAL);
slowck = kzalloc(sizeof(*slowck), GFP_KERNEL);
@@ -335,7 +335,7 @@ at91_clk_register_sam9x5_slow(void __iomem *sckcr,
init.name = name;
init.ops = &sam9x5_slow_ops;
- init.parent_names = parent_names;
+ init.parent_hws = parent_hws;
init.num_parents = num_parents;
init.flags = 0;
@@ -366,18 +366,21 @@ static void __init at91sam9x5_sckc_register(struct device_node *np,
unsigned int rc_osc_startup_us,
const struct clk_slow_bits *bits)
{
- const char *parent_names[2] = { "slow_rc_osc", "slow_osc" };
void __iomem *regbase = of_iomap(np, 0);
struct device_node *child = NULL;
const char *xtal_name;
struct clk_hw *slow_rc, *slow_osc, *slowck;
+ static struct clk_parent_data parent_data = {
+ .name = "slow_xtal",
+ };
+ const struct clk_hw *parent_hws[2];
bool bypass;
int ret;
if (!regbase)
return;
- slow_rc = at91_clk_register_slow_rc_osc(regbase, parent_names[0],
+ slow_rc = at91_clk_register_slow_rc_osc(regbase, "slow_rc_osc",
32768, 50000000,
rc_osc_startup_us, bits);
if (IS_ERR(slow_rc))
@@ -401,12 +404,16 @@ static void __init at91sam9x5_sckc_register(struct device_node *np,
if (!xtal_name)
goto unregister_slow_rc;
- slow_osc = at91_clk_register_slow_osc(regbase, parent_names[1],
- xtal_name, 1200000, bypass, bits);
+ parent_data.fw_name = xtal_name;
+
+ slow_osc = at91_clk_register_slow_osc(regbase, "slow_osc",
+ &parent_data, 1200000, bypass, bits);
if (IS_ERR(slow_osc))
goto unregister_slow_rc;
- slowck = at91_clk_register_sam9x5_slow(regbase, "slowck", parent_names,
+ parent_hws[0] = slow_rc;
+ parent_hws[1] = slow_osc;
+ slowck = at91_clk_register_sam9x5_slow(regbase, "slowck", parent_hws,
2, bits);
if (IS_ERR(slowck))
goto unregister_slow_osc;
@@ -464,14 +471,17 @@ static void __init of_sam9x60_sckc_setup(struct device_node *np)
struct clk_hw_onecell_data *clk_data;
struct clk_hw *slow_rc, *slow_osc;
const char *xtal_name;
- const char *parent_names[2] = { "slow_rc_osc", "slow_osc" };
+ const struct clk_hw *parent_hws[2];
+ static struct clk_parent_data parent_data = {
+ .name = "slow_xtal",
+ };
bool bypass;
int ret;
if (!regbase)
return;
- slow_rc = clk_hw_register_fixed_rate_with_accuracy(NULL, parent_names[0],
+ slow_rc = clk_hw_register_fixed_rate_with_accuracy(NULL, "slow_rc_osc",
NULL, 0, 32768,
93750000);
if (IS_ERR(slow_rc))
@@ -481,9 +491,10 @@ static void __init of_sam9x60_sckc_setup(struct device_node *np)
if (!xtal_name)
goto unregister_slow_rc;
+ parent_data.fw_name = xtal_name;
bypass = of_property_read_bool(np, "atmel,osc-bypass");
- slow_osc = at91_clk_register_slow_osc(regbase, parent_names[1],
- xtal_name, 5000000, bypass,
+ slow_osc = at91_clk_register_slow_osc(regbase, "slow_osc",
+ &parent_data, 5000000, bypass,
&at91sam9x60_bits);
if (IS_ERR(slow_osc))
goto unregister_slow_rc;
@@ -494,14 +505,16 @@ static void __init of_sam9x60_sckc_setup(struct device_node *np)
/* MD_SLCK and TD_SLCK. */
clk_data->num = 2;
- clk_data->hws[0] = clk_hw_register_fixed_rate(NULL, "md_slck",
- parent_names[0],
- 0, 32768);
+ clk_data->hws[0] = clk_hw_register_fixed_rate_parent_hw(NULL, "md_slck",
+ slow_rc,
+ 0, 32768);
if (IS_ERR(clk_data->hws[0]))
goto clk_data_free;
+ parent_hws[0] = slow_rc;
+ parent_hws[1] = slow_osc;
clk_data->hws[1] = at91_clk_register_sam9x5_slow(regbase, "td_slck",
- parent_names, 2,
+ parent_hws, 2,
&at91sam9x60_bits);
if (IS_ERR(clk_data->hws[1]))
goto unregister_md_slck;
@@ -572,30 +585,36 @@ static void __init of_sama5d4_sckc_setup(struct device_node *np)
void __iomem *regbase = of_iomap(np, 0);
struct clk_hw *slow_rc, *slowck;
struct clk_sama5d4_slow_osc *osc;
- struct clk_init_data init;
+ struct clk_init_data init = {};
const char *xtal_name;
- const char *parent_names[2] = { "slow_rc_osc", "slow_osc" };
+ const struct clk_hw *parent_hws[2];
+ static struct clk_parent_data parent_data = {
+ .name = "slow_xtal",
+ };
int ret;
if (!regbase)
return;
slow_rc = clk_hw_register_fixed_rate_with_accuracy(NULL,
- parent_names[0],
+ "slow_rc_osc",
NULL, 0, 32768,
250000000);
if (IS_ERR(slow_rc))
return;
xtal_name = of_clk_get_parent_name(np, 0);
+ if (!xtal_name)
+ goto unregister_slow_rc;
+ parent_data.fw_name = xtal_name;
osc = kzalloc(sizeof(*osc), GFP_KERNEL);
if (!osc)
goto unregister_slow_rc;
- init.name = parent_names[1];
+ init.name = "slow_osc";
init.ops = &sama5d4_slow_osc_ops;
- init.parent_names = &xtal_name;
+ init.parent_data = &parent_data;
init.num_parents = 1;
init.flags = CLK_IGNORE_UNUSED;
@@ -608,8 +627,10 @@ static void __init of_sama5d4_sckc_setup(struct device_node *np)
if (ret)
goto free_slow_osc_data;
+ parent_hws[0] = slow_rc;
+ parent_hws[1] = &osc->hw;
slowck = at91_clk_register_sam9x5_slow(regbase, "slowck",
- parent_names, 2,
+ parent_hws, 2,
&at91sama5d4_bits);
if (IS_ERR(slowck))
goto unregister_slow_osc;
--
2.34.1