| commit | 81e7f2002b7db269799ebdac0d905574c0a85d1d | [log] [tgz] |
|---|---|---|
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | Fri Aug 15 01:21:55 2014 +0300 |
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | Wed Sep 03 11:05:06 2014 +0200 |
| tree | 05a6aaf331dc887fbdb1dfb3f601619bdcaaa572 | |
| parent | 1038392b4dd02a46006d38f33aab71486d477ced [diff] |
drm/i915: Idle unused rings on gen2/3 during init/resume gen2/3 platforms have a boatload of rings we're not using. On my 830 the BIOS/hw can leave some of those "active" after resume which will prevent c3 entry. The ring is apparently considered active whenever head != tail even if the ring is disabled. Disable and clear all such unused ringbuffers on init/resume. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>