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staging: greybus: pwm: Change prototype of helpers to prepare further changes

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This prepares the driver for further changes that will make it harder to
determine the pwm_chip from a given gb_pwm_chip. To just not have
to do that, rework gb_pwm_activate_operation(),
gb_pwm_deactivate_operation(), gb_pwm_config_operation(),
gb_pwm_set_polarity_operation(), gb_pwm_enable_operation() and
gb_pwm_disable_operation() to take a pwm_chip. Also use the pwm_chip as
driver data instead of the gb_pwm_chip.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/ef9b346d5bab508d4ded81cf115bf244938d04f1.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Uwe Kleine-König 2024-02-14 10:33:22 +01:00
parent 4b2b7b1e87
commit 46eec872d5
1 changed files with 29 additions and 31 deletions
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60
drivers/staging/greybus/pwm.c
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@ -39,9 +39,9 @@ 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)
{
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 +51,7 @@ 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(chip->dev);
ret = gbphy_runtime_get_sync(gbphy_dev);
if (ret)
return ret;
@ -64,9 +64,9 @@ static int gb_pwm_activate_operation(struct gb_pwm_chip *pwmc,
return ret;
}
static int gb_pwm_deactivate_operation(struct gb_pwm_chip *pwmc,
u8 which)
static int gb_pwm_deactivate_operation(struct pwm_chip *chip, u8 which)
{
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(chip->dev);
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)
{
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(chip->dev);
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)
{
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(chip->dev);
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)
{
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(chip->dev);
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(chip->dev);
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)
{
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");
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;
}
@ -282,7 +279,7 @@ static int gb_pwm_probe(struct gbphy_device *gbphy_dev,
pwmc->connection = connection;
gb_connection_set_data(connection, pwmc);
gb_gbphy_set_data(gbphy_dev, pwmc);
gb_gbphy_set_data(gbphy_dev, chip);
ret = gb_connection_enable(connection);
if (ret)
@ -320,7 +317,8 @@ static int gb_pwm_probe(struct gbphy_device *gbphy_dev,
static void gb_pwm_remove(struct gbphy_device *gbphy_dev)
{
struct gb_pwm_chip *pwmc = gb_gbphy_get_data(gbphy_dev);
struct pwm_chip *chip = gb_gbphy_get_data(gbphy_dev);
struct gb_pwm_chip *pwmc = pwm_chip_to_gb_pwm_chip(chip);
struct gb_connection *connection = pwmc->connection;
int ret;
@ -328,7 +326,7 @@ static void gb_pwm_remove(struct gbphy_device *gbphy_dev)
if (ret)
gbphy_runtime_get_noresume(gbphy_dev);
pwmchip_remove(&pwmc->chip);
pwmchip_remove(chip);
gb_connection_disable(connection);
gb_connection_destroy(connection);
kfree(pwmc);