On Tue, 9 Dec 2003, Sean S Fendt wrote: > > The group doing octagon's extended BIOS functions (extended int 17 calls) can > access the device on the SM Bus, so the hardware is capable of the necessary > commands. (They have discovered, however, they must do a block write, not a > byte or word write for it to function correctly). > > The i801 driver which supports the SM Bus on our board, does not support > i2c-level commands. How much trouble will I have if I decide to extend this > driver to allow at least some i2c-level commands? Quickly browsing through i2c-i801.c, it seems to support the command parameter I2C_SMBUS_I2C_BLOCK_DATA. If I only remember correctly, this is a block transfer without the block length as the first byte after chip address. > Is there some other way I can support the 2-byte address EEPROMs without > extending the driver to allow i2c-level commands? A 2-byte address EEPROM user prog was recently contributed, the mailing list has some discussion about this. http://archives.andrew.net.au/lm-sensors/msg05210.html -- Ky?sti M?lkki <kyosti.malkki at welho.com>
