eepromread could only read EEPROMs through the /dev/i2c interface.
Once the cat24c256 driver is started and claims/reserves the
device, it can no longer be read through the /dev/i2c interface.
This patch adds support for reading from EEPROMs through the
/dev/eeprom interface. For example, to read the on-board eeprom
on the BBB, one would do `eepromread -f /dev/eepromb1s50 -i`.
Change-Id: If08ce37231e593982eeb109bdd6d5458ad271108
Capes (i.e. expansion boards for the BeagleBone and BeagleBone Black)
each have their own cat24c256 EEPROM with information about the cape
such as the name of the cape, pins used, power requirements, etc.
This patch adds support for displaying the cape data fields. It
can be used in shell scripts to detect and identify attached capes.
Change-Id: I4bfa7aae634a7bacfa5e25afcba773d9fbc2316c
128 byte reads are much more common than 32 byte reads. The message
passing + setup/teardown for a read is much more expensive, in terms
of time, than the reading itself. A slightly bigger struct is well
worth the time savings. This reduces read times for /dev/eeprom
from 57 seconds per 4KB to 14 seconds.
Additionally, make sending the page address in the eeprom driver
and utility optional. This can save a little time when reading
within the same page and allows support for smaller devices that
don't support pages (example: chips containing EDID).
Change-Id: Ie48087caee40c11fa241d1555fce9309ddd27b43
This program uses the i2c /dev interface to read the
contents of EEPROMs and display it to the user in
HEX and ASCII. It also has a mode that can display
data in label:value pairs. That mode is used for
board detection in the rc script to start the right
i2c drivers for the board.
Change-Id: I0bf5b13ffab5a89533c762d6881a145cf7f14914
