Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | /* |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 30 | * Header file for atmel_read_eeprom.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | */ |
| 32 | |
| 33 | #include <linux/types.h> |
| 34 | #include <linux/pci.h> |
| 35 | #include <linux/kernel.h> |
| 36 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 48 | #define BLOCK_SEL 0x00 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
| 68 | |