1/*
2 *  arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c
3 *
4 *  Copyright (C) 2003 PMC-Sierra Inc.
5 *  Author: Manish Lachwani (lachwani@pmc-sierra.com)
6 *  Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
7 *
8 *  This program is free software; you can redistribute  it and/or modify it
9 *  under  the terms of  the GNU General  Public License as published by the
10 *  Free Software Foundation;  either version 2 of the  License, or (at your
11 *  option) any later version.
12 *
13 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
14 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
15 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
16 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
17 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
19 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
21 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 *  You should have received a copy of the  GNU General Public License along
25 *  with this program; if not, write  to the Free Software Foundation, Inc.,
26 *  675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29/*
30 * Header file for atmel_read_eeprom.c
31 */
32
33#include <linux/types.h>
34#include <linux/pci.h>
35#include <linux/kernel.h>
36#include <linux/slab.h>
37#include <asm/pci.h>
38#include <asm/io.h>
39#include <linux/init.h>
40#include <asm/termios.h>
41#include <asm/ioctls.h>
42#include <linux/ioctl.h>
43#include <linux/fcntl.h>
44
45#define	DEFAULT_PORT 	"/dev/ttyS0"	/* Port to open */
46#define	TXX		0 		/* Dummy loop for spinning */
47
48#define	BLOCK_SEL	0x00
49#define	SLAVE_ADDR	0xa0
50#define	READ_BIT	0x01
51#define	WRITE_BIT	0x00
52#define	R_HEADER	SLAVE_ADDR + BLOCK_SEL + READ_BIT
53#define	W_HEADER	SLAVE_ADDR + BLOCK_SEL + WRITE_BIT
54
55/*
56 * Clock, Voltages and Data
57 */
58#define	vcc_off		(ioctl(fd, TIOCSBRK, 0))
59#define	vcc_on		(ioctl(fd, TIOCCBRK, 0))
60#define	sda_hi		(ioctl(fd, TIOCMBIS, &dtr))
61#define	sda_lo		(ioctl(fd, TIOCMBIC, &dtr))
62#define	scl_lo		(ioctl(fd, TIOCMBIC, &rts))
63#define	scl_hi		(ioctl(fd, TIOCMBIS, &rts))
64
65const char rts = TIOCM_RTS;
66const char dtr = TIOCM_DTR;
67int fd;
68