diff options
Diffstat (limited to 'include/linux/pwm.h')
| -rw-r--r-- | include/linux/pwm.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/include/linux/pwm.h b/include/linux/pwm.h index a2df509056ac..63a17d2b4ec8 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -218,6 +218,8 @@ static inline void pwm_init_state(const struct pwm_device *pwm, * * pwm_get_state(pwm, &state); * duty = pwm_get_relative_duty_cycle(&state, 100); + * + * Returns: rounded relative duty cycle multiplied by @scale */ static inline unsigned int pwm_get_relative_duty_cycle(const struct pwm_state *state, unsigned int scale) @@ -244,8 +246,8 @@ pwm_get_relative_duty_cycle(const struct pwm_state *state, unsigned int scale) * pwm_set_relative_duty_cycle(&state, 50, 100); * pwm_apply_might_sleep(pwm, &state); * - * This functions returns -EINVAL if @duty_cycle and/or @scale are - * inconsistent (@scale == 0 or @duty_cycle > @scale). + * Returns: 0 on success or ``-EINVAL`` if @duty_cycle and/or @scale are + * inconsistent (@scale == 0 or @duty_cycle > @scale) */ static inline int pwm_set_relative_duty_cycle(struct pwm_state *state, unsigned int duty_cycle, @@ -351,7 +353,7 @@ struct pwm_chip { * pwmchip_supports_waveform() - checks if the given chip supports waveform callbacks * @chip: The pwm_chip to test * - * Returns true iff the pwm chip support the waveform functions like + * Returns: true iff the pwm chip support the waveform functions like * pwm_set_waveform_might_sleep() and pwm_round_waveform_might_sleep() */ static inline bool pwmchip_supports_waveform(struct pwm_chip *chip) @@ -369,7 +371,7 @@ static inline struct device *pwmchip_parent(const struct pwm_chip *chip) return chip->dev.parent; } -static inline void *pwmchip_get_drvdata(struct pwm_chip *chip) +static inline void *pwmchip_get_drvdata(const struct pwm_chip *chip) { return dev_get_drvdata(&chip->dev); } @@ -379,7 +381,7 @@ static inline void pwmchip_set_drvdata(struct pwm_chip *chip, void *data) dev_set_drvdata(&chip->dev, data); } -#if IS_ENABLED(CONFIG_PWM) +#if IS_REACHABLE(CONFIG_PWM) /* PWM consumer APIs */ int pwm_round_waveform_might_sleep(struct pwm_device *pwm, struct pwm_waveform *wf); @@ -661,7 +663,7 @@ struct pwm_lookup { PWM_LOOKUP_WITH_MODULE(_provider, _index, _dev_id, _con_id, _period, \ _polarity, NULL) -#if IS_ENABLED(CONFIG_PWM) +#if IS_REACHABLE(CONFIG_PWM) void pwm_add_table(struct pwm_lookup *table, size_t num); void pwm_remove_table(struct pwm_lookup *table, size_t num); #else |