1#- 2# Copyright (c) 2016 The DragonFly Project. All rights reserved. 3# 4# This code is derived from software contributed to The DragonFly Project 5# by Imre Vadász <imre@vdsz.com> 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in 15# the documentation and/or other materials provided with the 16# distribution. 17# 3. Neither the name of The DragonFly Project nor the names of its 18# contributors may be used to endorse or promote products derived 19# from this software without specific, prior written permission. 20# 21# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25# COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26# INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32# SUCH DAMAGE. 33# 34 35#include <sys/bus.h> 36 37INTERFACE gpio; 38 39# 40# Allocate GPIO interrupt. 41# XXX trigger, polarity and termination constants are currently used from 42# sys/contrib/dev/acpica/source/include/acrestyp.h 43# 44METHOD int alloc_intr { 45 device_t dev; 46 u_int pin; 47 int trigger; 48 int polarity; 49 int termination; 50 void **cookiep; 51}; 52 53# 54# Deallocate GPIO interrupt. 55# 56METHOD void free_intr { 57 device_t dev; 58 void *cookie; 59}; 60 61# 62# Setup GPIO interrupt. 63# 64METHOD void setup_intr { 65 device_t dev; 66 void *cookie; 67 void *arg; 68 driver_intr_t *handler; 69}; 70 71# 72# Disable GPIO interrupt. 73# 74METHOD void teardown_intr { 75 device_t dev; 76 void *cookie; 77}; 78 79# 80# Reserve IO pin 81# 82METHOD int alloc_io_pin { 83 device_t dev; 84 u_int pin; 85 int flags; 86 void **cookiep; 87}; 88 89# 90# Release IO pin 91# 92METHOD int release_io_pin { 93 device_t dev; 94 void *cookie; 95}; 96 97# 98# Read pin value, returns 0 or 1. 99# 100METHOD int read_pin { 101 device_t dev; 102 void *cookie; 103}; 104 105# 106# Write pin value, value can be either 0 or 1. 107# 108METHOD void write_pin { 109 device_t dev; 110 void *cookie; 111 int value; 112}; 113