i2c: octeon: Improve error status checking

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Introduce a function that checks for valid status codes depending
on the phase of a transmit or receive. Also add all existing status
codes and improve error handling for various states.

The Octeon TWSI has an "assert acknowledge" bit (TWSI_CTL_AAK) that
is required to be set in master receive mode until the last byte is
requested. The state check needs to consider if this bit was set.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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Jan Glauber 2016-04-25 16:33:30 +02:00 • committed by Wolfram Sang

parent f6903783eb

commit b4c715d040

1 changed files with 106 additions and 23 deletions

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drivers/i2c/busses/i2c-octeon.c

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