diff options
Diffstat (limited to 'src/soc/intel/broadwell/broadwell/smbus.h')
-rw-r--r-- | src/soc/intel/broadwell/broadwell/smbus.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/broadwell/smbus.h b/src/soc/intel/broadwell/broadwell/smbus.h new file mode 100644 index 0000000000..fb13c2d8a9 --- /dev/null +++ b/src/soc/intel/broadwell/broadwell/smbus.h @@ -0,0 +1,52 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2005 Yinghai Lu <yinghailu@gmail.com> + * Copyright (C) 2009 coresystems GmbH + * Copyright (C) 2014 Google Inc. + * + * 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; version 2 of the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _BROADWELL_SMBUS_H_ +#define _BROADWELL_SMBUS_H_ + +/* PCI Configuration Space (D31:F3): SMBus */ +#define SMB_BASE 0x20 +#define HOSTC 0x40 +#define HST_EN (1 << 0) +#define SMB_RCV_SLVA 0x09 + +/* SMBus I/O bits. */ +#define SMBHSTSTAT 0x0 +#define SMBHSTCTL 0x2 +#define SMBHSTCMD 0x3 +#define SMBXMITADD 0x4 +#define SMBHSTDAT0 0x5 +#define SMBHSTDAT1 0x6 +#define SMBBLKDAT 0x7 +#define SMBTRNSADD 0x9 +#define SMBSLVDATA 0xa +#define SMLINK_PIN_CTL 0xe +#define SMBUS_PIN_CTL 0xf + +#define SMBUS_TIMEOUT (10 * 1000 * 100) +#define SMBUS_SLAVE_ADDR 0x24 + +int do_smbus_read_byte(unsigned smbus_base, unsigned device, + unsigned address); +int do_smbus_write_byte(unsigned smbus_base, unsigned device, + unsigned address, unsigned data); + +#endif |