FreeBSD/Linux Kernel Cross Reference
sys/compat/linuxkpi/common/include/linux/pwm.h

     /*-
      * Copyright (c) 2022 Vladimir Kondratyev <wulf@FreeBSD.org>
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
      * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #ifndef _LINUXKPI_LINUX_PWM_H_
    #define _LINUXKPI_LINUX_PWM_H_
    
    #include <linux/device.h>
    #include <linux/err.h>
    
    struct pwm_state {
            uint64_t period;
            bool enabled;
    };
    
    struct pwm_device {
            struct pwm_state state;
    };
    
    static inline struct pwm_device *
    pwm_get(struct device *dev, const char *consumer)
    {
            return (ERR_PTR(-ENODEV));
    }
    
    static inline void
    pwm_put(struct pwm_device *pwm)
    {
    }
    
    static inline int
    pwm_enable(struct pwm_device *pwm)
    {
            return (-EINVAL);
    }
    
    static inline void
    pwm_disable(struct pwm_device *pwm)
    {
    }
    
    static inline bool
    pwm_is_enabled(const struct pwm_device *pwm)
    {
            return (false);
    }
    
    static inline unsigned int
    pwm_get_relative_duty_cycle(const struct pwm_state *state, unsigned int scale)
    {
            return (0);
    }
    
    static inline int
    pwm_set_relative_duty_cycle(struct pwm_state *state, unsigned int duty_cycle,
        unsigned int scale)
    {
            return (0);
    }
    
    static inline void
    pwm_get_state(const struct pwm_device *pwm, struct pwm_state *state)
    {
            *state = pwm->state;
    }
    
    static inline int
    pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state)
    {
            return (-ENOTSUPP);
    }
    
    #endif  /* _LINUXKPI_LINUX_PWM_H_ */

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