drm/i915: use crtc_htotal when calculating ilk watermarks

This was introduced in:

commit 7c4a395ff8f441acb7876281c6777624e6410349
Author: Ville Syrjälä <[email protected]>
Date:   Wed Oct 9 19:17:56 2013 +0300

    drm/i915: Don't re-compute pipe watermarks except for the affected pipe

and I missed fixing it in:

commit fec8cba306f974f3a4491176994de5d821273643
Author: Jesse Barnes <[email protected]>
Date:   Wed Nov 27 11:10:26 2013 -0800

    drm/i915: use crtc_htotal in watermark calculations to match fastboot v2

It's needed for ILK+ platforms to fastboot without crashing on a divide
by 0 after a DPMS on action.

Note: Ville mentioned in his review that this confusion seems to go
down to the original introduction of this code in

commit 801bcfffbb0721d7131e930f9a46103e539c43a4
Author: Paulo Zanoni <[email protected]>
Date:   Fri May 31 10:08:35 2013 -0300

    drm/i915: properly set HSW WM_PIPE registers

So it seems to have been missed both in the fastboot patch and in the
3d mode suppport (where only crtc_htotal reflects the real pipe
width).

Signed-off-by: Jesse Barnes <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
[danvet: Add note based on Ville's review.]
Signed-off-by: Daniel Vetter <[email protected]>

0 files changed, 0 insertions, 0 deletions