0bac52c1cc
gpio_pin_max must return the maximum supported pin number and not the total number of pins on the system. PR: 157070 Submitted by: brix
140 lines
3.1 KiB
Objective-C
140 lines
3.1 KiB
Objective-C
#-
|
|
# 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 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);
|
|
}
|
|
};
|
|
|
|
HEADER {
|
|
#include <dev/ofw/openfirm.h>
|
|
};
|
|
|
|
#
|
|
# 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;
|
|
};
|
|
|
|
#
|
|
# 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;
|