[RFC] Creating an eeprom class

Thomas De Schampheleire
2013-01-20T18:08:31Z

[plaintext and fixed address of David Brownell]

Hi,

Several of the eeprom drivers that live in drivers/misc/eeprom export
a binary sysfs file 'eeprom'. If a userspace program or script wants
to access this file, it needs to know the full path, for example:

/sys/bus/spi/devices/spi32766.0/eeprom

The problem with this approach is that it requires knowledge about the
hardware configuration: is the eeprom on the SPI bus, the I2C bus, or
maybe memory mapped?

It would therefore be more interesting to have a bus-agnostic way to
access this eeprom file, for example:
/sys/class/eeprom/eeprom0/eeprom

Maybe it'd be even better to use a more generic class name than
'eeprom', since there are several types of eeprom-like devices that
you could export this way.

Or should we rather hook the eeprom code into the mtd subsystem?

What is your opinion?

Thanks,
Thomas