[SCSI] isci: enable clock gating
authorMarcin Tomczak <marcin.tomczak@intel.com>
Fri, 27 Jan 2012 19:14:50 +0000 (11:14 -0800)
committerJames Bottomley <JBottomley@Parallels.com>
Sun, 19 Feb 2012 14:09:00 +0000 (08:09 -0600)
commite5cc6aa4b6ef34c3f054af8c61a4f73c157589c3
tree64efa1d1dbece4ce058e7cd19b205bde9ef5bdc1
parente3d338a536330b5ffc9f28d7c6a4cdf6ba51867a
[SCSI] isci: enable clock gating

Enabling clock gating for power savings on entry to controller ready
state. Disable SCU clock gating for power savings on exit from the
controller ready state.

The gating is fully automated by silicon after setting the mode.

Signed-off-by: Marcin Tomczak <marcin.tomczak@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
drivers/scsi/isci/host.c
drivers/scsi/isci/registers.h