6b34b16ea5
- GPIO bus controller interface - GPIO bus interface - Implementation of GPIO led(4) compatible device - Implementation of iic(4) bus over GPIO (author: Luiz Otavio O Souza) Tested by: Luiz Otavio O Souza, Alexandr Rybalko
122 lines
2.5 KiB
Objective-C
122 lines
2.5 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 gpiobus;
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#
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# Lock the gpio bus
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#
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METHOD void lock_bus {
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device_t busdev;
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};
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#
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# Unlock the gpio bus
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#
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METHOD void unlock_bus {
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device_t busdev;
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};
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#
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# Dedicate the gpio bus control for a child
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#
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METHOD void acquire_bus {
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device_t busdev;
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device_t dev;
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};
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#
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# Release the bus
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#
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METHOD void release_bus {
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device_t busdev;
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device_t dev;
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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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device_t child;
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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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device_t child;
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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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device_t child;
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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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device_t child;
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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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device_t child;
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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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# 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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device_t child;
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uint32_t pin_num;
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uint32_t flags;
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};
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