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