2 # Copyright (c) 2016 The DragonFly Project. All rights reserved.
4 # This code is derived from software contributed to The DragonFly Project
5 # by Imre Vadász <imre@vdsz.com>
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
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
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.
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
40 # Allocate GPIO interrupt.
41 # XXX trigger, polarity and termination constants are currently used from
42 # sys/contrib/dev/acpica/source/include/acrestyp.h
44 METHOD int alloc_intr {
53 # Deallocate GPIO interrupt.
55 METHOD int free_intr {
61 # Setup GPIO interrupt.
63 METHOD int setup_intr {
67 driver_intr_t *handler;
71 # Disable GPIO interrupt.
73 METHOD int teardown_intr {
79 # XXX Add a method for allocating pins for read/write IO.
80 # Allocating a pin for IO should perform the necessary checks to
81 # make sure that read_/write_pin doesn't trigger an assertion.
85 # Read pin value, returns 0 or 1.
93 # Write pin value, value can be either 0 or 1.
95 METHOD void write_pin {