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/* $NetBSD: consumer.h,v 1.5 2018/11/19 10:48:59 maya Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Taylor R. Campbell.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _LINUX_REGULATOR_CONSUMER_H_
#define _LINUX_REGULATOR_CONSUMER_H_
#ifdef _KERNEL_OPT
#include "opt_fdt.h"
#endif
#ifdef FDT
#include <machine/limits.h>
#include <dev/fdt/fdtvar.h>
struct regulator {
struct fdtbus_regulator regulator;
};
static inline int
regulator_get_voltage(struct regulator *reg)
{
unsigned uvolt;
int error;
error = fdtbus_regulator_get_voltage(®->regulator, &uvolt);
if (error) {
/* XXX errno NetBSD->Linux */
KASSERTMSG(error > 0, "negative error: %d", error);
return -error;
}
KASSERTMSG(uvolt <= INT_MAX, "high voltage: %u uV", uvolt);
return (int)uvolt;
}
static inline int
regulator_set_voltage(struct regulator *reg, int min_uvolt, int max_uvolt)
{
if (min_uvolt < 0 || max_uvolt < 0)
return -EINVAL;
/* XXX errno NetBSD->Linux */
return -fdtbus_regulator_set_voltage(®->regulator, min_uvolt,
max_uvolt);
}
#else
struct regulator;
static inline int
regulator_get_voltage(struct regulator *reg)
{
panic("no voltage regulators here");
}
static inline int
regulator_set_voltage(struct regulator *reg, int min_uvolt, int max_uvolt)
{
panic("no voltage regulators here");
}
#endif
#endif /* _LINUX_REGULATOR_CONSUMER_H_ */
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