21cb1342c0
rely only on checking the device unit to indentify the BSC unit we are attaching to. Make use of the device base address to identify our BSC unit. Approved by: adrian (mentor)
70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
/*-
|
|
* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
|
|
* Copyright (c) 2013 Luiz Otavio O Souza <loos@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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _BCM2835_BSCVAR_H
|
|
#define _BCM2835_BSCVAR_H
|
|
|
|
struct {
|
|
uint32_t sda;
|
|
uint32_t scl;
|
|
unsigned long start;
|
|
} bcm_bsc_pins[] = {
|
|
{ 0, 1, 0x20205000 }, /* BSC0 GPIO pins and base address. */
|
|
{ 2, 3, 0x20804000 } /* BSC1 GPIO pins and base address. */
|
|
};
|
|
|
|
struct bcm_bsc_softc {
|
|
device_t sc_dev;
|
|
struct mtx sc_mtx;
|
|
struct resource * sc_mem_res;
|
|
struct resource * sc_irq_res;
|
|
bus_space_tag_t sc_bst;
|
|
bus_space_handle_t sc_bsh;
|
|
uint16_t sc_resid;
|
|
uint8_t *sc_data;
|
|
uint8_t sc_flags;
|
|
void * sc_intrhand;
|
|
};
|
|
|
|
#define BCM_I2C_BUSY 0x01
|
|
#define BCM_I2C_READ 0x02
|
|
#define BCM_I2C_ERROR 0x04
|
|
|
|
#define BCM_BSC_WRITE(_sc, _off, _val) \
|
|
bus_space_write_4(_sc->sc_bst, _sc->sc_bsh, _off, _val)
|
|
#define BCM_BSC_READ(_sc, _off) \
|
|
bus_space_read_4(_sc->sc_bst, _sc->sc_bsh, _off)
|
|
|
|
#define BCM_BSC_LOCK(_sc) \
|
|
mtx_lock(&(_sc)->sc_mtx)
|
|
#define BCM_BSC_UNLOCK(_sc) \
|
|
mtx_unlock(&(_sc)->sc_mtx)
|
|
|
|
#endif /* _BCM2835_BSCVAR_H_ */
|