freebsd-dev/sys/arm/broadcom/bcm2835/bcm2835_gpio.h
Luiz Otavio O Souza 44d06d8d9a Export a function to allow BCM2835's peripheral devices to enable their
altenate pin function (from GPIO pins) as needed.

Approved by:	adrian (mentor)
2013-09-07 18:48:15 +00:00

45 lines
1.6 KiB
C

/*-
* Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@bluezbox.com>
*
* 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.
*
* $FreeBSD$
*/
#ifndef _BCM2835_GPIO_H_
#define _BCM2835_GPIO_H_
enum bcm_gpio_fsel {
BCM_GPIO_INPUT,
BCM_GPIO_OUTPUT,
BCM_GPIO_ALT5,
BCM_GPIO_ALT4,
BCM_GPIO_ALT0,
BCM_GPIO_ALT1,
BCM_GPIO_ALT2,
BCM_GPIO_ALT3,
};
void bcm_gpio_set_alternate(device_t, uint32_t, uint32_t);
#endif /* _BCM2835_GPIO_H_ */