142 lines
3.1 KiB
Objective-C
142 lines
3.1 KiB
Objective-C
#-
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# Copyright (c) 2009 Oleksandr Tymoshenko <gonzo@freebsd.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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#include <sys/bus.h>
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#include <sys/gpio.h>
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INTERFACE gpio;
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CODE {
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static gpio_map_gpios_t gpio_default_map_gpios;
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int
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gpio_default_map_gpios(device_t bus, phandle_t dev,
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phandle_t gparent, int gcells, pcell_t *gpios, uint32_t *pin,
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uint32_t *flags)
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{
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/* Propagate up the bus hierarchy until someone handles it. */
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if (device_get_parent(bus) != NULL)
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return (GPIO_MAP_GPIOS(device_get_parent(bus), dev,
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gparent, gcells, gpios, pin, flags));
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/* If that fails, then assume the FreeBSD defaults. */
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*pin = gpios[0];
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if (gcells == 2 || gcells == 3)
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*flags = gpios[gcells - 1];
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return (0);
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}
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};
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HEADER {
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#include <dev/ofw/openfirm.h>
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};
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#
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# Get total number of pins
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#
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METHOD int pin_max {
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device_t dev;
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int *npins;
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};
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#
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# Set value of pin specifed by pin_num
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#
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METHOD int pin_set {
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device_t dev;
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uint32_t pin_num;
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uint32_t pin_value;
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};
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#
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# Get value of pin specifed by pin_num
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#
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METHOD int pin_get {
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device_t dev;
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uint32_t pin_num;
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uint32_t *pin_value;
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};
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#
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# Toggle value of pin specifed by pin_num
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#
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METHOD int pin_toggle {
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device_t dev;
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uint32_t pin_num;
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};
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#
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# Get pin capabilities
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#
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METHOD int pin_getcaps {
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device_t dev;
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uint32_t pin_num;
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uint32_t *caps;
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};
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#
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# Get pin flags
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#
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METHOD int pin_getflags {
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device_t dev;
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uint32_t pin_num;
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uint32_t *flags;
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};
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#
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# Get pin name
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#
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METHOD int pin_getname {
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device_t dev;
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uint32_t pin_num;
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char *name;
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};
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#
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# Set current configuration and capabilities
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#
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METHOD int pin_setflags {
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device_t dev;
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uint32_t pin_num;
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uint32_t flags;
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};
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#
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# Allow the GPIO controller to map the gpio-specifier on its own.
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#
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METHOD int map_gpios {
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device_t bus;
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phandle_t dev;
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phandle_t gparent;
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int gcells;
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pcell_t *gpios;
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uint32_t *pin;
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uint32_t *flags;
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} DEFAULT gpio_default_map_gpios;
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