diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mfd/samsung/core.h | 3 | ||||
| -rw-r--r-- | include/linux/pwm.h | 33 |
2 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/mfd/samsung/core.h b/include/linux/mfd/samsung/core.h index 6bc4bcd488ac..5a23dd4df432 100644 --- a/include/linux/mfd/samsung/core.h +++ b/include/linux/mfd/samsung/core.h @@ -30,6 +30,9 @@ #define MIN_600_MV 600000 #define MIN_500_MV 500000 +/* Ramp delay in uV/us */ +#define RAMP_DELAY_12_MVUS 12000 + /* Macros to represent steps for LDO/BUCK */ #define STEP_50_MV 50000 #define STEP_25_MV 25000 diff --git a/include/linux/pwm.h b/include/linux/pwm.h index cfc3ed46cad2..b78d27c42629 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -74,6 +74,24 @@ enum pwm_polarity { PWM_POLARITY_INVERSED, }; +/** + * struct pwm_args - board-dependent PWM arguments + * @period: reference period + * @polarity: reference polarity + * + * This structure describes board-dependent arguments attached to a PWM + * device. These arguments are usually retrieved from the PWM lookup table or + * device tree. + * + * Do not confuse this with the PWM state: PWM arguments represent the initial + * configuration that users want to use on this PWM device rather than the + * current PWM hardware state. + */ +struct pwm_args { + unsigned int period; + enum pwm_polarity polarity; +}; + enum { PWMF_REQUESTED = 1 << 0, PWMF_ENABLED = 1 << 1, @@ -92,6 +110,7 @@ enum { * @period: period of the PWM signal (in nanoseconds) * @duty_cycle: duty cycle of the PWM signal (in nanoseconds) * @polarity: polarity of the PWM signal + * @args: PWM arguments */ struct pwm_device { const char *label; @@ -105,6 +124,8 @@ struct pwm_device { unsigned int period; unsigned int duty_cycle; enum pwm_polarity polarity; + + struct pwm_args args; }; static inline bool pwm_is_enabled(const struct pwm_device *pwm) @@ -144,6 +165,18 @@ static inline enum pwm_polarity pwm_get_polarity(const struct pwm_device *pwm) return pwm ? pwm->polarity : PWM_POLARITY_NORMAL; } +static inline void pwm_get_args(const struct pwm_device *pwm, + struct pwm_args *args) +{ + *args = pwm->args; +} + +static inline void pwm_apply_args(struct pwm_device *pwm) +{ + pwm_set_period(pwm, pwm->args.period); + pwm_set_polarity(pwm, pwm->args.polarity); +} + /** * struct pwm_ops - PWM controller operations * @request: optional hook for requesting a PWM |