diff options
Diffstat (limited to 'src/southbridge/via/common/early_smbus_read_byte.c')
| -rw-r--r-- | src/southbridge/via/common/early_smbus_read_byte.c | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/src/southbridge/via/common/early_smbus_read_byte.c b/src/southbridge/via/common/early_smbus_read_byte.c deleted file mode 100644 index 4f6e29e71b..0000000000 --- a/src/southbridge/via/common/early_smbus_read_byte.c +++ /dev/null @@ -1,51 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com> - * - * 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. - */ - -#include <arch/io.h> -#include <device/early_smbus.h> - -#include "via_early_smbus.h" - -/** - * \brief Read a byte from the SMBus. - * - * @param smbus_dev The base SMBus IO port - * @param addr The address location of the DIMM on the SMBus. - * @param offset The offset the data is located at. - */ -u8 smbus_read_byte(u32 smbus_dev, u8 addr, u8 offset) -{ - u8 val; - - /* Initialize SMBus sequence */ - smbus_reset(smbus_dev); - /* Clear host data port. */ - outb(0x00, SMBHSTDAT0(smbus_dev)); - - smbus_wait_until_ready(smbus_dev); - - /* Actual addr to reg format. */ - addr = (addr << 1); - addr |= 1; /* read command */ - outb(addr, SMBXMITADD(smbus_dev)); - outb(offset, SMBHSTCMD(smbus_dev)); - /* Start transaction, byte data read. */ - outb(0x48, SMBHSTCTL(smbus_dev)); - smbus_wait_until_ready(smbus_dev); - - val = inb(SMBHSTDAT0(smbus_dev)); - return val; -} |