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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.
#
# $FreeBSD$
#
#include <sys/bus.h>
#include <sys/gpio.h>
INTERFACE gpio;
CODE {
static device_t
gpio_default_get_bus(void)
{
return (NULL);
}
static int
gpio_default_map_gpios(device_t bus, phandle_t dev,
phandle_t gparent, int gcells, pcell_t *gpios, uint32_t *pin,
uint32_t *flags)
{
/* Propagate up the bus hierarchy until someone handles it. */
if (device_get_parent(bus) != NULL)
return (GPIO_MAP_GPIOS(device_get_parent(bus), dev,
gparent, gcells, gpios, pin, flags));
/* If that fails, then assume the FreeBSD defaults. */
*pin = gpios[0];
if (gcells == 2 || gcells == 3)
*flags = gpios[gcells - 1];
return (0);
}
static int
gpio_default_pwm_getcaps(device_t dev __unused, int32_t pwm __unused,
uint32_t pini __unused, uint32_t *caps)
{
*caps = 0;
return (0);
}
static int
gpio_default_pwm_max(device_t dev __unused, uint32_t *pwmmax)
{
*pwmmax = 0;
return (0);
}
static int
gpio_default_pwm_get(device_t dev __unused, uint32_t pwm __unused,
uint32_t pin __unused, uint32_t reg __unused,
uint32_t *value __unused)
{
return (EINVAL);
}
static int
gpio_default_pwm_set(device_t dev __unused, uint32_t pwm __unused,
uint32_t pin __unused, uint32_t reg __unused,
uint32_t value __unused)
{
return (EINVAL);
}
};
HEADER {
#include <dev/ofw/openfirm.h>
};
#
# Return the gpiobus device reference
#
METHOD device_t get_bus {
device_t dev;
} DEFAULT gpio_default_get_bus;
#
# Get maximum pin number
#
METHOD int pin_max {
device_t dev;
int *maxpin;
};
#
# Set value of pin specifed by pin_num
#
METHOD int pin_set {
device_t dev;
uint32_t pin_num;
uint32_t pin_value;
};
#
# Get value of pin specifed by pin_num
#
METHOD int pin_get {
device_t dev;
uint32_t pin_num;
uint32_t *pin_value;
};
#
# Toggle value of pin specifed by pin_num
#
METHOD int pin_toggle {
device_t dev;
uint32_t pin_num;
};
#
# Get pin capabilities
#
METHOD int pin_getcaps {
device_t dev;
uint32_t pin_num;
uint32_t *caps;
};
#
# Get pin flags
#
METHOD int pin_getflags {
device_t dev;
uint32_t pin_num;
uint32_t *flags;
};
#
# Get pin name
#
METHOD int pin_getname {
device_t dev;
uint32_t pin_num;
char *name;
};
#
# Set current configuration and capabilities
#
METHOD int pin_setflags {
device_t dev;
uint32_t pin_num;
uint32_t flags;
};
#
# Get maximum pwm number
#
METHOD int pwm_max {
device_t dev;
int *maxpwm;
} DEFAULT gpio_default_pwm_max;
#
# Get pwm capabilities
#
METHOD int pwm_getcaps {
device_t dev;
int32_t pwm_num;
uint32_t pin_num;
uint32_t *caps;
} DEFAULT gpio_default_pwm_getcaps;
#
# Get pwm settings of pin specifed by pin_num
#
METHOD int pwm_get {
device_t dev;
int32_t pwm_num;
uint32_t pin_num;
uint32_t pwm_reg;
uint32_t *pwm_value;
} DEFAULT gpio_default_pwm_get;
#
# Set pwm settings of pin specifed by pin_num
#
METHOD int pwm_set {
device_t dev;
int32_t pwm_num;
uint32_t pin_num;
uint32_t pwm_reg;
uint32_t pwm_value;
} DEFAULT gpio_default_pwm_set;
#
# Allow the GPIO controller to map the gpio-specifier on its own.
#
METHOD int map_gpios {
device_t bus;
phandle_t dev;
phandle_t gparent;
int gcells;
pcell_t *gpios;
uint32_t *pin;
uint32_t *flags;
} DEFAULT gpio_default_map_gpios;
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