freebsd-dev/sys/mips/mediatek/fdt_reset_if.m
Stanislav Galabov 10998af48d This revision adds the following parts:
- machine dependent low level init code
- SoC clocks detection and some utility functions
- Common interface to read/write/modify SoC system control registers, used
  by some of the other drivers and utility functions
- simple FDT resets support, based on the fdt_clock implementation already
  in the tree. For the moment resets and clocks are managed using these
  implementations. I am planning to port those to the new extres framework
  in the future, but currently I simply don't have time to do this part too.

Approved by:	adrian (mentor)
Sponsored by:	Smartcom - Bulgaria AD
Differential Revision:	https://reviews.freebsd.org/D5826
2016-04-07 11:02:49 +00:00

59 lines
2.0 KiB
Objective-C

#-
# Copyright (c) 2016 Stanislav Galabov
# 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>
#
# This is the interface that fdt_reset drivers provide to other drivers.
# In this context, reset refers to a reset signal provided to some other
# hardware component within the system. They are most often found within
# embedded processors that have on-chip IO controllers.
#
INTERFACE fdt_reset;
#
# Enable/assert/apply the specified reset.
# Returns 0 on success or a standard errno value.
#
METHOD int assert {
device_t provider;
int index;
};
#
# Disable/de-assert/remove the specified reset.
# Returns 0 on success or a standard errno value.
#
METHOD int deassert {
device_t provider;
int index;
};