1#- 2# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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# $FreeBSD$ 28# 29 30#include <sys/bus.h> 31 32INTERFACE pwmbus; 33 34CODE { 35 static int 36 pwm_default_set_flags(device_t dev, u_int channel, uint32_t flags) 37 { 38 39 return (EOPNOTSUPP); 40 } 41 42 static int 43 pwm_default_get_flags(device_t dev, u_int channel, uint32_t *flags) 44 { 45 46 *flags = 0; 47 return (0); 48 } 49}; 50 51# 52# Config the period (Total number of cycle in ns) and 53# the duty (active number of cycle in ns) 54# 55METHOD int channel_config { 56 device_t bus; 57 u_int channel; 58 unsigned int period; 59 unsigned int duty; 60}; 61 62# 63# Get the period (Total number of cycle in ns) and 64# the duty (active number of cycle in ns) 65# 66METHOD int channel_get_config { 67 device_t bus; 68 u_int channel; 69 unsigned int *period; 70 unsigned int *duty; 71}; 72 73# 74# Set the flags 75# 76METHOD int channel_set_flags { 77 device_t bus; 78 u_int channel; 79 uint32_t flags; 80} DEFAULT pwm_default_set_flags; 81 82# 83# Get the flags 84# 85METHOD int channel_get_flags { 86 device_t dev; 87 u_int channel; 88 uint32_t *flags; 89} DEFAULT pwm_default_get_flags; 90 91# 92# Enable the pwm output 93# 94METHOD int channel_enable { 95 device_t bus; 96 u_int channel; 97 bool enable; 98}; 99 100# 101# Is the pwm output enabled 102# 103METHOD int channel_is_enabled { 104 device_t bus; 105 u_int channel; 106 bool *enabled; 107}; 108 109# 110# Get the number of channels 111# 112METHOD int channel_count { 113 device_t bus; 114 u_int *nchannel; 115}; 116