freebsd-src/sys/dev/sff/sff_if.m
Dmitry Salychev 2a9021898c
sff: Add SFP driver (fdt-based draft)
This basic version of the driver obtains properties of the "sff,sfp"
compatible devices and implements a simple interface to provide an I2C
bus device for the rest of the drivers (e.g. to implement SIOCGI2C).

Both of the interface and driver are subjects for a further
generalization to be used in case of non-FDT and non-arm64 platforms.

Reviewed by:		bz, manu
Approved by:		bz (mentor)
MFC after:		3 weeks
Differential Revision:	https://reviews.freebsd.org/D41440
2023-08-18 12:40:11 +02:00

36 lines
1.4 KiB
Objective-C

#-
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright © 2023 Dmitry Salychev
#
# 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.
#
#include <machine/bus.h>
INTERFACE sff;
METHOD int get_i2c_bus {
device_t dev;
device_t *i2c_bus;
};