64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/* $NetBSD: pwm.c,v 1.1 2018/05/06 10:32:33 jmcneill Exp $ */
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/*-
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* Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
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* All rights reserved.
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pwm.c,v 1.1 2018/05/06 10:32:33 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <dev/pwm/pwmvar.h>
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int
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pwm_enable(pwm_tag_t pwm)
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{
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return pwm->pwm_enable(pwm, true);
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}
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int
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pwm_disable(pwm_tag_t pwm)
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{
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return pwm->pwm_enable(pwm, false);
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}
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int
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pwm_get_config(pwm_tag_t pwm, struct pwm_config *conf)
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{
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return pwm->pwm_get_config(pwm, conf);
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}
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int
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pwm_set_config(pwm_tag_t pwm, const struct pwm_config *conf)
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{
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if (conf->period < conf->duty_cycle)
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return EINVAL;
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return pwm->pwm_set_config(pwm, conf);
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}
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