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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
/*
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* arch/mips/pmc-sierra/yosemite/atmel_read_eeprom.c
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*
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* Copyright (C) 2003 PMC-Sierra Inc.
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* Author: Manish Lachwani (lachwani@pmc-sierra.com)
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* Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* Header file for atmel_read_eeprom.c
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*/
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <asm/pci.h>
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#include <asm/io.h>
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#include <linux/init.h>
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#include <asm/termios.h>
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#include <asm/ioctls.h>
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#include <linux/ioctl.h>
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#include <linux/fcntl.h>
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#define DEFAULT_PORT "/dev/ttyS0" /* Port to open */
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#define TXX 0 /* Dummy loop for spinning */
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#define BLOCK_SEL 0x00
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#define SLAVE_ADDR 0xa0
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#define READ_BIT 0x01
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#define WRITE_BIT 0x00
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#define R_HEADER SLAVE_ADDR + BLOCK_SEL + READ_BIT
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#define W_HEADER SLAVE_ADDR + BLOCK_SEL + WRITE_BIT
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/*
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* Clock, Voltages and Data
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*/
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#define vcc_off (ioctl(fd, TIOCSBRK, 0))
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#define vcc_on (ioctl(fd, TIOCCBRK, 0))
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#define sda_hi (ioctl(fd, TIOCMBIS, &dtr))
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#define sda_lo (ioctl(fd, TIOCMBIC, &dtr))
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#define scl_lo (ioctl(fd, TIOCMBIC, &rts))
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#define scl_hi (ioctl(fd, TIOCMBIS, &rts))
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const char rts = TIOCM_RTS;
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const char dtr = TIOCM_DTR;
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int fd;
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