drm/msm: Add enable/disable hooks for mmu

5XX targets that are using per-process pagetables will need to
keep the IOMMU clocks on the entire time because we don't know
exactly when the GPU might touch it.  That said there are
occassional depencency issues if the clocks are enabled out
of order.  To be certain we should enable the MMU clocks last
and disable them first.  Add enable/disable hooks to the MMU
struct to do this cleanly from the GPU pm_resume / pm_suspend
paths.

Change-Id: Ic0dedbad8e2298e55c90b29eed657baa0933ddcf
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>

0 files changed, 0 insertions, 0 deletions