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3 Commits

Author SHA1 Message Date
Rong Chang
a81f0cd547 Add I2C transmit/receive function 
Implement a generalized I2C transmit-receive function that
write-then-read blocks of raw data. Original 8-bit and 16-bit
read/write functions are refactored.

SMBus read-block protocol for ASCII string is also implemented
based on this API.

Signed-off-by: Rong Chang <rongchang@chromium.org>

BUG=chrome-os-partner:8026,8316
TEST=manual:
  Type 'lightsaber' to check 8-bit read/write.
  Type 'charger' to check 16-bit read.
  Type 'charger input 4032' to check 16-bit write.

Change-Id: I0ad3ad45b796d9ec03d8fbc1d643aa6a92d6343f
 2012-03-06 12:07:22 +08:00
Bill Richardson
e5b17f9047 Add 8-bit I2C read/write functions. 
These provide 8-bit accesses to registers within an I2C device.

BUG=chrome-os-partner:7839
TEST=none

Testing will come when I start using them.

Change-Id: Ib53d3347253bccee93cb9c5da12db92970155d92
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
 2012-02-13 16:16:10 -08:00
Randall Spangler
bdf7da5b08 Initial sources import 1/3 
source files mainly done by Randall.

Signed-off-by: Randall Spangler <rspangler@chromium.org>

Change-Id: Iaff83a842b17f3350fb6f2a3f1597ad4c29bd12a
 2011-12-07 19:10:02 +00:00