On 1/25/24 6:09 AM, Uwe Kleine-König wrote:
struct pwm_chip::dev is about to change. To not have to touch this
driver in the same commit as struct pwm_chip::dev, use the macro
provided for exactly this purpose.
Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
I think I'd rather see the footprint of your change be much
smaller than it is. Please see below.
-Alex
---
drivers/staging/greybus/pwm.c | 55 +++++++++++++++++------------------
1 file changed, 26 insertions(+), 29 deletions(-)
diff --git a/drivers/staging/greybus/pwm.c b/drivers/staging/greybus/pwm.c
index a3cb68cfa0f9..75e0518791d8 100644
--- a/drivers/staging/greybus/pwm.c
+++ b/drivers/staging/greybus/pwm.c
@@ -17,7 +17,6 @@
struct gb_pwm_chip {
struct gb_connection *connection;
u8 pwm_max; /* max pwm number */
-
struct pwm_chip chip;
};
@@ -39,9 +38,9 @@ static int gb_pwm_count_operation(struct gb_pwm_chip *pwmc)
return 0;
}
-static int gb_pwm_activate_operation(struct gb_pwm_chip *pwmc,
- u8 which)
+static int gb_pwm_activate_operation(struct pwm_chip *chip, u8 which)
Why change the type of the argument here?
{
+ struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
struct gb_pwm_activate_request request;
struct gbphy_device *gbphy_dev;
int ret;
@@ -51,7 +50,7 @@ static int gb_pwm_activate_operation(struct gb_pwm_chip *pwmc,
request.which = which;
- gbphy_dev = to_gbphy_dev(pwmc->chip.dev);
+ gbphy_dev = to_gbphy_dev(pwmchip_parent(chip));
Just make this line look like this:
gbphy_dev = to_gbphy_dev(pwmchip_parent(&pwmc->chip));
ret = gbphy_runtime_get_sync(gbphy_dev);
if (ret)
return ret;
@@ -64,9 +63,10 @@ static int gb_pwm_activate_operation(struct gb_pwm_chip *pwmc,
return ret;
}
-static int gb_pwm_deactivate_operation(struct gb_pwm_chip *pwmc,
+static int gb_pwm_deactivate_operation(struct pwm_chip *chip,
u8 which)
Same question here.
{
+ struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
struct gb_pwm_deactivate_request request;
struct gbphy_device *gbphy_dev;
int ret;
@@ -76,7 +76,7 @@ static int gb_pwm_deactivate_operation(struct gb_pwm_chip *pwmc,
request.which = which;
- gbphy_dev = to_gbphy_dev(pwmc->chip.dev);
+ gbphy_dev = to_gbphy_dev(pwmchip_parent(chip));
gbphy_dev = to_gbphy_dev(pwmchip_parent(&pwmc->chip));
ret = gbphy_runtime_get_sync(gbphy_dev);
if (ret)
return ret;
@@ -89,9 +89,10 @@ static int gb_pwm_deactivate_operation(struct gb_pwm_chip *pwmc,
return ret;
}
-static int gb_pwm_config_operation(struct gb_pwm_chip *pwmc,
+static int gb_pwm_config_operation(struct pwm_chip *chip,
u8 which, u32 duty, u32 period)
And here.
{
+ struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
struct gb_pwm_config_request request;
struct gbphy_device *gbphy_dev;
int ret;
@@ -103,7 +104,7 @@ static int gb_pwm_config_operation(struct gb_pwm_chip *pwmc,
request.duty = cpu_to_le32(duty);
request.period = cpu_to_le32(period);
- gbphy_dev = to_gbphy_dev(pwmc->chip.dev);
+ gbphy_dev = to_gbphy_dev(pwmchip_parent(chip));
gbphy_dev = to_gbphy_dev(pwmchip_parent(&pwmc->chip));
ret = gbphy_runtime_get_sync(gbphy_dev);
if (ret)
return ret;
@@ -116,9 +117,10 @@ static int gb_pwm_config_operation(struct gb_pwm_chip *pwmc,
return ret;
}
-static int gb_pwm_set_polarity_operation(struct gb_pwm_chip *pwmc,
+static int gb_pwm_set_polarity_operation(struct pwm_chip *chip,
u8 which, u8 polarity)
And here.
{
+ struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
struct gb_pwm_polarity_request request;
struct gbphy_device *gbphy_dev;
int ret;
@@ -129,7 +131,7 @@ static int gb_pwm_set_polarity_operation(struct gb_pwm_chip *pwmc,
request.which = which;
request.polarity = polarity;
- gbphy_dev = to_gbphy_dev(pwmc->chip.dev);
+ gbphy_dev = to_gbphy_dev(pwmchip_parent(chip));
gbphy_dev = to_gbphy_dev(pwmchip_parent(&pwmc->chip));
ret = gbphy_runtime_get_sync(gbphy_dev);
if (ret)
return ret;
@@ -142,9 +144,9 @@ static int gb_pwm_set_polarity_operation(struct gb_pwm_chip *pwmc,
return ret;
}
-static int gb_pwm_enable_operation(struct gb_pwm_chip *pwmc,
- u8 which)
+static int gb_pwm_enable_operation(struct pwm_chip *chip, u8 which)
And on and on.
{
+ struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
struct gb_pwm_enable_request request;
struct gbphy_device *gbphy_dev;
int ret;
@@ -154,7 +156,7 @@ static int gb_pwm_enable_operation(struct gb_pwm_chip *pwmc,
request.which = which;
- gbphy_dev = to_gbphy_dev(pwmc->chip.dev);
+ gbphy_dev = to_gbphy_dev(pwmchip_parent(chip));
ret = gbphy_runtime_get_sync(gbphy_dev);
if (ret)
return ret;
@@ -167,9 +169,9 @@ static int gb_pwm_enable_operation(struct gb_pwm_chip *pwmc,
return ret;
}
-static int gb_pwm_disable_operation(struct gb_pwm_chip *pwmc,
- u8 which)
+static int gb_pwm_disable_operation(struct pwm_chip *chip, u8 which)
{
+ struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
struct gb_pwm_disable_request request;
struct gbphy_device *gbphy_dev;
int ret;
@@ -182,7 +184,7 @@ static int gb_pwm_disable_operation(struct gb_pwm_chip *pwmc,
ret = gb_operation_sync(pwmc->connection, GB_PWM_TYPE_DISABLE,
&request, sizeof(request), NULL, 0);
- gbphy_dev = to_gbphy_dev(pwmc->chip.dev);
+ gbphy_dev = to_gbphy_dev(pwmchip_parent(chip));
gbphy_runtime_put_autosuspend(gbphy_dev);
return ret;
@@ -190,19 +192,15 @@ static int gb_pwm_disable_operation(struct gb_pwm_chip *pwmc,
static int gb_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
{
I guess my question now is, why don't this function and the
next one take a gb_pwm_chip pointer as argument like the rest...
(Not your problem--don't "fix" this in this series.)
- struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
-
- return gb_pwm_activate_operation(pwmc, pwm->hwpwm);
+ return gb_pwm_activate_operation(chip, pwm->hwpwm);
};
static void gb_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
{
- struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
-
if (pwm_is_enabled(pwm))
- dev_warn(chip->dev, "freeing PWM device without disabling\n");
+ dev_warn(pwmchip_parent(chip), "freeing PWM device without disabling\n");
- gb_pwm_deactivate_operation(pwmc, pwm->hwpwm);
+ gb_pwm_deactivate_operation(chip, pwm->hwpwm);
}
static int gb_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
@@ -212,22 +210,21 @@ static int gb_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
bool enabled = pwm->state.enabled;
u64 period = state->period;
u64 duty_cycle = state->duty_cycle;
- struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
/* Set polarity */
if (state->polarity != pwm->state.polarity) {
if (enabled) {
- gb_pwm_disable_operation(pwmc, pwm->hwpwm);
+ gb_pwm_disable_operation(chip, pwm->hwpwm);
enabled = false;
}
- err = gb_pwm_set_polarity_operation(pwmc, pwm->hwpwm, state->polarity);
+ err = gb_pwm_set_polarity_operation(chip, pwm->hwpwm, state->polarity);
if (err)
return err;
}
if (!state->enabled) {
if (enabled)
- gb_pwm_disable_operation(pwmc, pwm->hwpwm);
+ gb_pwm_disable_operation(chip, pwm->hwpwm);
return 0;
}
@@ -243,13 +240,13 @@ static int gb_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
if (duty_cycle > period)
duty_cycle = period;
- err = gb_pwm_config_operation(pwmc, pwm->hwpwm, duty_cycle, period);
+ err = gb_pwm_config_operation(chip, pwm->hwpwm, duty_cycle, period);
if (err)
return err;
/* enable/disable */
if (!enabled)
- return gb_pwm_enable_operation(pwmc, pwm->hwpwm);
+ return gb_pwm_enable_operation(chip, pwm->hwpwm);
return 0;
}
