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#-
# Copyright (c) 2009 Oleksandr Tymoshenko <gonzo@freebsd.org>
# 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.
#
#
#include <sys/bus.h>
#include <sys/gpio.h>
INTERFACE gpiobus;
#
# Dedicate the gpio bus control for a child
#
METHOD int acquire_bus {
device_t busdev;
device_t dev;
int how;
};
#
# Release the bus
#
METHOD void release_bus {
device_t busdev;
device_t dev;
};
#
# Set value of pin specified by pin_num
#
METHOD int pin_set {
device_t dev;
device_t child;
uint32_t pin_num;
uint32_t pin_value;
};
#
# Get value of pin specified by pin_num
#
METHOD int pin_get {
device_t dev;
device_t child;
uint32_t pin_num;
uint32_t *pin_value;
};
#
# Toggle value of pin specified by pin_num
#
METHOD int pin_toggle {
device_t dev;
device_t child;
uint32_t pin_num;
};
#
# Get pin capabilities
#
METHOD int pin_getcaps {
device_t dev;
device_t child;
uint32_t pin_num;
uint32_t *caps;
};
#
# Get pin flags
#
METHOD int pin_getflags {
device_t dev;
device_t child;
uint32_t pin_num;
uint32_t *flags;
};
#
# Set current configuration and capabilities
#
METHOD int pin_setflags {
device_t dev;
device_t child;
uint32_t pin_num;
uint32_t flags;
};
#
# Simultaneously read and/or change up to 32 adjacent pins.
# If the device cannot change the pins simultaneously, returns EOPNOTSUPP.
#
# More details about using this interface can be found in sys/gpio.h
#
METHOD int pin_access_32 {
device_t dev;
device_t child;
uint32_t first_pin;
uint32_t clear_pins;
uint32_t change_pins;
uint32_t *orig_pins;
};
#
# Simultaneously configure up to 32 adjacent pins.
# This is intended to change the configuration of all the pins simultaneously,
# but unlike pin_access_32, this will not fail if the hardware can't do so.
#
# More details about using this interface can be found in sys/gpio.h
#
METHOD int pin_config_32 {
device_t dev;
device_t child;
uint32_t first_pin;
uint32_t num_pins;
uint32_t *pin_flags;
};
#
# Get the pin name
#
METHOD int pin_getname {
device_t dev;
uint32_t pin_num;
char *name;
};
#
# Set the pin name
#
METHOD int pin_setname {
device_t dev;
uint32_t pin_num;
const char *name;
};
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