[Intel-gfx] [PATCH] drm/i915: Add Baytrail PSR Support.

[Daniel Vetter]

On Wed, Jan 29, 2014 at 3:56 PM, Ville Syrjälä
<ville.syrjala at linux.intel.com> wrote:
> I think once we get to working on D0i2, we'll need to move the PSR
> wakeup to happen from a workqueue since it essentially requires a
> full modeset. Even now in your code it's somewhat questionable
> since you're doing stuff like aux transfers while holding
> struct_mutex.

Imo we can fix this up later on by pushing it into a workqueue. It's
not great that we block while hodling struct_mutex, but imo there's
too many loose pieces around psr so I prefer we start by merging
something pessimistic, but known to work properly. Then we can tune
and improve with the knowledge that the crc testcase will catch
regressions.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch