enum {
PWMF_REQUESTED = 1 << 0,
PWMF_ENABLED = 1 << 1,
+ PWMF_EXPORTED = 1 << 2,
};
struct pwm_device {
struct pwm_chip *chip;
void *chip_data;
- unsigned int period; /* in nanoseconds */
+ unsigned int period; /* in nanoseconds */
+ unsigned int duty_cycle; /* in nanoseconds */
+ enum pwm_polarity polarity;
};
static inline void pwm_set_period(struct pwm_device *pwm, unsigned int period)
return pwm ? pwm->period : 0;
}
+static inline void pwm_set_duty_cycle(struct pwm_device *pwm, unsigned int duty)
+{
+ if (pwm)
+ pwm->duty_cycle = duty;
+}
+
+static inline unsigned int pwm_get_duty_cycle(struct pwm_device *pwm)
+{
+ return pwm ? pwm->duty_cycle : 0;
+}
+
/*
* pwm_set_polarity - configure the polarity of a PWM signal
*/
}
#endif
+#ifdef CONFIG_PWM_SYSFS
+void pwmchip_sysfs_export(struct pwm_chip *chip);
+void pwmchip_sysfs_unexport(struct pwm_chip *chip);
+#else
+static inline void pwmchip_sysfs_export(struct pwm_chip *chip)
+{
+}
+
+static inline void pwmchip_sysfs_unexport(struct pwm_chip *chip)
+{
+}
+#endif /* CONFIG_PWM_SYSFS */
+
#endif /* __LINUX_PWM_H */