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atmel_read_eeprom.h
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1 /*
2  * arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c
3  *
4  * Copyright (C) 2003 PMC-Sierra Inc.
5  * Author: Manish Lachwani ([email protected])
6  * Copyright (C) 2005 Ralf Baechle ([email protected])
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 
65 const char rts = TIOCM_RTS;
66 const char dtr = TIOCM_DTR;
67 int fd;