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linuxkpi: Add pwm.h

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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
This commit is contained in:
Emmanuel Vadot 2022-06-23 10:25:23 +02:00
parent 0e45856f9a
commit 2b743f65f1
1 changed files with 94 additions and 0 deletions
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94
sys/compat/linuxkpi/common/include/linux/pwm.h Normal file
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/*-
* 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_ */