1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2018 Emmanuel Vadot <manu@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef _OFW_PWM_H_ 29 #define _OFW_PWM_H_ 30 31 #include <dev/ofw/openfirm.h> 32 33 struct pwm_channel { 34 device_t dev; 35 u_int channel; 36 uint64_t period; 37 uint64_t duty; 38 uint32_t flags; 39 bool enabled; 40 }; 41 typedef struct pwm_channel *pwm_channel_t; 42 43 int pwm_get_by_ofw_propidx(device_t consumer, phandle_t node, 44 const char *prop_name, int idx, pwm_channel_t *channel); 45 int pwm_get_by_ofw_idx(device_t consumer, phandle_t node, int idx, 46 pwm_channel_t *out_channel); 47 int pwm_get_by_ofw_property(device_t consumer, phandle_t node, 48 const char *prop_name, pwm_channel_t *out_channel); 49 int pwm_get_by_ofw_name(device_t consumer, phandle_t node, const char *name, 50 pwm_channel_t *out_channel); 51 52 #endif /* _OFW_PWM_H_ */ 53