freebsd-nq/sys/arm/ti/ti_gpio.h
Andrew Turner b6c7dacfc9 Rework the Ti GPIO code to allow for both the OMAP4 and AM335X attachments
to be present. Thsi creates a new per-SoC driver that handles probe and
setting/getting the gpio flags.

Differential Revision:	https://reviews.freebsd.org/D943
Reviewed by:	loos, rpaulo
MFC after:	1 week
2014-10-18 17:51:34 +00:00

70 lines
2.3 KiB
C

/*-
* Copyright (c) 2011
* Ben Gray <ben.r.gray@gmail.com>.
* 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 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 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 TI_GPIO_H
#define TI_GPIO_H
/* The maximum number of banks for any SoC */
#define MAX_GPIO_BANKS 6
/*
* Maximum GPIOS possible, max of *_MAX_GPIO_BANKS * *_INTR_PER_BANK.
* These are defined in ti_gpio.c
*/
#define MAX_GPIO_INTRS 8
/**
* Structure that stores the driver context.
*
* This structure is allocated during driver attach.
*/
struct ti_gpio_softc {
device_t sc_dev;
/*
* The memory resource(s) for the PRCM register set, when the device is
* created the caller can assign up to 6 memory regions depending on
* the SoC type.
*/
struct resource *sc_mem_res[MAX_GPIO_BANKS];
struct resource *sc_irq_res[MAX_GPIO_INTRS];
/* The handle for the register IRQ handlers. */
void *sc_irq_hdl[MAX_GPIO_INTRS];
/*
* The following describes the H/W revision of each of the GPIO banks.
*/
uint32_t sc_revision[MAX_GPIO_BANKS];
struct mtx sc_mtx;
};
#endif /* TI_GPIO_H */