diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/i2c.h | 12 | ||||
| -rw-r--r-- | include/linux/i2c/pmbus.h | 45 |
2 files changed, 57 insertions, 0 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 33a5992d4936..59167e21bd9d 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -576,6 +576,17 @@ union i2c_smbus_data { /* and one more for user-space compatibility */ }; +/* + * Large SMBus block data io, which is not defined in the SMBus standard, + * but used by some NIC (i.e. Intel I354) sideband SMBus interface. + */ +#define I2C_SMBUS_BLOCK_LARGE_MAX 240 /* extra large block size */ +union i2c_smbus_large_data { + union i2c_smbus_data data; + __u8 block[I2C_SMBUS_BLOCK_LARGE_MAX + 2]; /* block[0] is used for length */ + /* and one more for PEC */ +}; + /* i2c_smbus_xfer read or write markers */ #define I2C_SMBUS_READ 1 #define I2C_SMBUS_WRITE 0 @@ -591,6 +602,7 @@ union i2c_smbus_data { #define I2C_SMBUS_I2C_BLOCK_BROKEN 6 #define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */ #define I2C_SMBUS_I2C_BLOCK_DATA 8 +#define I2C_SMBUS_BLOCK_LARGE_DATA 9 #ifdef __KERNEL__ diff --git a/include/linux/i2c/pmbus.h b/include/linux/i2c/pmbus.h new file mode 100644 index 000000000000..69280db02c41 --- /dev/null +++ b/include/linux/i2c/pmbus.h @@ -0,0 +1,45 @@ +/* + * Hardware monitoring driver for PMBus devices + * + * Copyright (c) 2010, 2011 Ericsson AB. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _PMBUS_H_ +#define _PMBUS_H_ + +/* flags */ + +/* + * PMBUS_SKIP_STATUS_CHECK + * + * During register detection, skip checking the status register for + * communication or command errors. + * + * Some PMBus chips respond with valid data when trying to read an unsupported + * register. For such chips, checking the status register is mandatory when + * trying to determine if a chip register exists or not. + * Other PMBus chips don't support the STATUS_CML register, or report + * communication errors for no explicable reason. For such chips, checking + * the status register must be disabled. + */ +#define PMBUS_SKIP_STATUS_CHECK (1 << 0) + +struct pmbus_platform_data { + u32 flags; /* Device specific flags */ +}; + +#endif /* _PMBUS_H_ */ |