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Merge branch 'for-4.8/capture' into for-next

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This commit is contained in:
Thierry Reding 2016-07-25 16:23:39 +02:00
commit bd2686122d
4 changed files with 77 additions and 0 deletions
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24
include/linux/pwm.h
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@ -5,7 +5,9 @@
#include <linux/mutex.h>
#include <linux/of.h>
struct pwm_capture;
struct seq_file;
struct pwm_chip;
/**
@ -241,6 +243,7 @@ pwm_set_relative_duty_cycle(struct pwm_state *state, unsigned int duty_cycle,
* @free: optional hook for freeing a PWM
* @config: configure duty cycles and period length for this PWM
* @set_polarity: configure the polarity of this PWM
* @capture: capture and report PWM signal
* @enable: enable PWM output toggling
* @disable: disable PWM output toggling
* @apply: atomically apply a new PWM config. The state argument
@ -260,6 +263,8 @@ struct pwm_ops {
int duty_ns, int period_ns);
int (*set_polarity)(struct pwm_chip *chip, struct pwm_device *pwm,
enum pwm_polarity polarity);
int (*capture)(struct pwm_chip *chip, struct pwm_device *pwm,
struct pwm_capture *result, unsigned long timeout);
int (*enable)(struct pwm_chip *chip, struct pwm_device *pwm);
void (*disable)(struct pwm_chip *chip, struct pwm_device *pwm);
int (*apply)(struct pwm_chip *chip, struct pwm_device *pwm,
@ -300,6 +305,16 @@ struct pwm_chip {
bool can_sleep;
};
/**
* struct pwm_capture - PWM capture data
* @period: period of the PWM signal (in nanoseconds)
* @duty_cycle: duty cycle of the PWM signal (in nanoseconds)
*/
struct pwm_capture {
unsigned int period;
unsigned int duty_cycle;
};
#if IS_ENABLED(CONFIG_PWM)
/* PWM user APIs */
struct pwm_device *pwm_request(int pwm_id, const char *label);
@ -412,6 +427,8 @@ static inline void pwm_disable(struct pwm_device *pwm)
}
/* PWM provider APIs */
int pwm_capture(struct pwm_device *pwm, struct pwm_capture *result,
unsigned long timeout);
int pwm_set_chip_data(struct pwm_device *pwm, void *data);
void *pwm_get_chip_data(struct pwm_device *pwm);
@ -463,6 +480,13 @@ static inline int pwm_config(struct pwm_device *pwm, int duty_ns,
return -EINVAL;
}
static inline int pwm_capture(struct pwm_device *pwm,
struct pwm_capture *result,
unsigned long timeout)
{
return -EINVAL;
}
static inline int pwm_set_polarity(struct pwm_device *pwm,
enum pwm_polarity polarity)
{