linuxkpi: Add pwm.h
Provide dummy functions needed for drm-kmod. Reviewed by: bz MFC after: 1 week Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D35572
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sys/compat/linuxkpi/common/include/linux/pwm.h
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sys/compat/linuxkpi/common/include/linux/pwm.h
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/*-
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* Copyright (c) 2022 Vladimir Kondratyev <wulf@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _LINUXKPI_LINUX_PWM_H_
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#define _LINUXKPI_LINUX_PWM_H_
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#include <linux/device.h>
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#include <linux/err.h>
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struct pwm_state {
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uint64_t period;
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bool enabled;
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};
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struct pwm_device {
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struct pwm_state state;
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};
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static inline struct pwm_device *
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pwm_get(struct device *dev, const char *consumer)
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{
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return (ERR_PTR(-ENODEV));
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}
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static inline void
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pwm_put(struct pwm_device *pwm)
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{
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}
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static inline int
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pwm_enable(struct pwm_device *pwm)
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{
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return (-EINVAL);
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}
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static inline void
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pwm_disable(struct pwm_device *pwm)
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{
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}
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static inline bool
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pwm_is_enabled(const struct pwm_device *pwm)
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{
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return (false);
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}
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static inline unsigned int
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pwm_get_relative_duty_cycle(const struct pwm_state *state, unsigned int scale)
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{
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return (0);
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}
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static inline int
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pwm_set_relative_duty_cycle(struct pwm_state *state, unsigned int duty_cycle,
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unsigned int scale)
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{
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return (0);
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}
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static inline void
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pwm_get_state(const struct pwm_device *pwm, struct pwm_state *state)
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{
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*state = pwm->state;
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}
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static inline int
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pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state)
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{
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return (-ENOTSUPP);
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}
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#endif /* _LINUXKPI_LINUX_PWM_H_ */
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