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freebsd/sys/dev/fdt/fdt_pinctrl_if.m
Ian Lepore b8ed20dbc4 Create an interface and support routines for drivers that handle IO pin
multiplexing and configuration based on FDT data.

Reviewed by:	imp
2014-09-13 19:03:32 +00:00

48 lines
1.7 KiB
Objective-C

#-
# Copyright (c) 2014 Ian Lepore
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
#include <sys/types.h>
#include <dev/ofw/openfirm.h>
#
# This is the interface that fdt_pinctrl drivers provide to other drivers.
#
INTERFACE fdt_pinctrl;
#
# Set pins to the specified configuration. The cfgxref arg is an xref phandle
# to a descendent node (child, grandchild, ...) of the pinctrl device node.
# Returns 0 on success or a standard errno value.
#
METHOD int configure {
device_t pinctrl;
phandle_t cfgxref;
};