arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.h

   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
  65 const char rts = TIOCM_RTS;
  66 const char dtr = TIOCM_DTR;
  67 int fd;
  68