Randall Spangler e73a228985 lm4: move I2C transfer state machine to interrupt handler ...

This significantly decreases the task swapping overhead when doing
many transfers.

Also fix a bug where on error, i2c_xfer() would issue a stop
condition, but not actually wait for it to complete before returning;
this could interfere with the next transfer in a back-to-back
scenario.

BUG=chrome-os-partner:25015
BRANCH=lm4 (more specifically, rambi and derivatives)
TEST=battery command should show the same info as before
     i2cscan should show devices at bus 0 0x12, 0x16, bus 5 0x98
     no charger errors on boot

Change-Id: I2195f0f9800b03a54fa33170dbae6705382578c7
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/182503
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Reviewed-by: Yung-chieh Lo <yjlou@chromium.org>

2014-01-16 01:08:40 +00:00

..

host

Remove old TODO comment in emulator UART module

2014-01-09 05:30:42 +00:00

it83xx

ite: Watchdog module added

2014-01-15 04:52:40 +00:00

lm4

lm4: move I2C transfer state machine to interrupt handler

2014-01-16 01:08:40 +00:00

mec1322

mec1322: Refine reset cause detection

2014-01-11 04:46:46 +00:00

stm32

Convert vboot hash calculation from task to deferred function

2014-01-09 20:25:11 +00:00