pwm.h

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/* SPDX-License-Identifier: MIT */
/*
 * Author: Andreas Werner <kernel@andy89.org>
 * Date: 2016
 */
#ifndef PWM_H_
#define PWM_H_
 
#include <FreeRTOS.h>
#include <stdint.h>
#include <stdbool.h>
#include <system.h>
#include <hal.h>
struct pwm;
#ifdef CONFIG_PWM_MULTI
 
struct pwm_ops {
        struct pwm *(*pwm_init)(uint32_t index);
        int32_t (*pwm_deinit)(struct pwm *pwm);
 
        int32_t (*pwm_setPeriod)(struct pwm *pwm, uint64_t us);
        int32_t (*pwm_setDutyCycle)(struct pwm *pwm, uint64_t us);
};
#endif
 
struct pwm_generic {
        bool init;
#ifdef CONFIG_INSTANCE_NAME
 
        const char *name;
#endif
#ifdef CONFIG_PWM_MULTI
 
        const struct pwm_ops *ops;
#endif
};
#ifndef CONFIG_PWM_MULTI
 
struct pwm *pwm_init(uint32_t index);
int32_t pwm_deinit(struct pwm *pwm);
int32_t pwm_setPeriod(struct pwm *pwm, uint64_t us);
int32_t pwm_setDutyCycle(struct pwm *pwm, uint64_t us);
#else
inline struct pwm *pwm_init(uint32_t index) {
        HAL_DEFINE_GLOBAL_ARRAY(pwm);
        struct pwm_generic *p = (struct pwm_generic *) HAL_GET_DEV(pwm, index);
        if (p == NULL) {
                return NULL;
        }
        return p->ops->pwm_init(index);
}
inline int32_t pwm_deinit(struct pwm *pwm) {
        struct pwm_generic *p = (struct pwm_generic *) pwm;
        return p->ops->pwm_deinit(pwm);
}
 
inline int32_t pwm_setPeriod(struct pwm *pwm, uint64_t us) {
        struct pwm_generic *p = (struct pwm_generic *) pwm;
        return p->ops->pwm_setPeriod(pwm, us);
}
inline int32_t pwm_setDutyCycle(struct pwm *pwm, uint64_t us) {
        struct pwm_generic *p = (struct pwm_generic *) pwm;
        return p->ops->pwm_setDutyCycle(pwm, us);
}
#endif
 
#endif