i2c: octeon: Enable High-Level Controller

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Use High-Level Controller (HLC) when possible. The HLC can read/write
up to 8 bytes and is completely optional. The most important difference
of the HLC is that it only requires one interrupt for a transfer
(up to 8 bytes) where the low-level read/write requires 2 interrupts
plus one interrupt per transferred byte. Since the interrupts are costly
using the HLC improves the performance. Also, the HLC provides improved
error handling.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Jan Glauber <jglauber@cavium.com>
[wsa: fixed trivial checkpatch warnings]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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David Daney 2016-04-25 16:33:34 +02:00 • committed by Wolfram Sang

parent 30c24b2514

commit d1fbff8944

1 changed files with 337 additions and 10 deletions

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347

drivers/i2c/busses/i2c-octeon.c

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