tree 75b2956385b525f1c15d50e62f31df2b831bbfe6
parent 08e54df580a8c988fa2cb71fad53eea6a996bcf8
author Mona Hossain <mhossain@codeaurora.org> 1364848666 -0700
committer Mona Hossain <mhossain@codeaurora.org> 1365794448 -0700

qseecom: Add CE2 clk init/deinit & enable/disable APIs

Uses information regarding which CE HW is used by HLOS crypto
driver and which CE HW is used by secure app running on secure
domain (TrustZone) to initialize and disable/enable clks as
needed. The information is obtained from the qseecom device
tree.

Qseecom driver will need to enable clks depending on which
crypto HW is being used by secure domain.

- For disk encryption functionality, qseecom will need to enable
  the HLOS CE HW clks before issuing a command to TZ to access and
  set certain XPU protected registers (PIPE KEY register sets).
  These registers belong to the HW used by HLOS crypto driver module,
  qcrypto.  But qcrypto cannot access them as they are XPU protected.
  Hence qseecom needs to enable the clks so that TZ can write to the
  PIPE KEY  registers (needed for disk encryption functionality).

- On request from qseecom clients, qseecom will need to enable the
  clks for the CE HW used by secure domain crypto driver (accessed
  by secure app).  This functionality is already in place.

Change-Id: Ib3a384be98e61088d3748c594010dafef475e100
Signed-off-by: Mona Hossain <mhossain@codeaurora.org>