commit 3ca4ed8715a6677ce2cdd7aa471685e653b5114d
author Mika Westerberg <mika.westerberg@linux.intel.com> Wed Apr 10 00:36:40 2013 +0000
committer Wolfram Sang <wsa@the-dreams.de> Mon Apr 15 18:17:51 2013 +0200
tree 3d9e689ceb242d4ff355262a5ea6ae59a2f967e3
parent efe7d640ef486c4c0c305641dbcacc6918542b76

i2c-designware: enable/disable the controller properly

The correct way to disable or enable the controller is to wait until the
DW_IC_ENABLE_STATUS register bit matches the bit we program into DW_IC_ENABLE
register. This procedure is described in the DesignWare I2C databook.

By doing this we can be sure that the controller is in correct state once
the function returns.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>