diff options
Diffstat (limited to 'board/m501sk/eeprom.c')
-rw-r--r-- | board/m501sk/eeprom.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/board/m501sk/eeprom.c b/board/m501sk/eeprom.c deleted file mode 100644 index d1a46f3..0000000 --- a/board/m501sk/eeprom.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * Add by Alan Lu, 07-29-2005 - * For ATMEL AT24C16 EEPROM - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <i2c.h> -#ifdef CONFIG_SYS_EEPROM_AT24C16 -#undef DEBUG - -void eeprom_init(void) -{ -#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) - i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); -#endif -} - -int eeprom_read(unsigned dev_addr, unsigned offset, uchar *buffer, - unsigned cnt) -{ - int page, count = 0, i = 0; - page = offset / 0x100; - i = offset % 0x100; - - while (count < cnt) { - if (i2c_read(dev_addr|page, i++, 1, buffer+count++, 1) != 0) - return 1; - if (i > 0xff) { - page++; - i = 0; - } - } - - return 0; -} - -/* - * for CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 2 (16-bit EEPROM address) offset is - * 0x000nxxxx for EEPROM address selectors at n, offset xxxx in EEPROM. - * - * for CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 1 (8-bit EEPROM page address) offset is - * 0x00000nxx for EEPROM address selectors and page number at n. - */ -int eeprom_write(unsigned dev_addr, unsigned offset, uchar *buffer, - unsigned cnt) -{ - int page, i = 0, count = 0; - - page = offset / 0x100; - i = offset % 0x100; - - while (count < cnt) { - if (i2c_write(dev_addr|page, i++, 1, buffer+count++, 1) != 0) - return 1; - if (i > 0xff) { - page++; - i = 0; - } - } - -#if defined(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS) - udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000); -#endif - - return 0; -} - -#ifndef CONFIG_SPI -int eeprom_probe(unsigned dev_addr, unsigned offset) -{ - unsigned char chip; - - /* Probe the chip address */ -#if CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 1 && !defined(CONFIG_SPI_X) - chip = offset >> 8; /* block number */ -#else - chip = offset >> 16; /* block number */ -#endif /* CONFIG_SYS_I2C_EEPROM_ADDR_LEN, CONFIG_SPI_X */ - - chip |= dev_addr; /* insert device address */ - return (i2c_probe(chip)); -} -#endif -#endif |