drm/i915: initialize DDI buffer translations
authorEugeni Dodonov <eugeni.dodonov@intel.com>
Wed, 9 May 2012 18:37:20 +0000 (15:37 -0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Sat, 19 May 2012 20:39:47 +0000 (22:39 +0200)
commit45244b87943b1173353b48854352bb9f4b065867
tree50184c15fb25605c007ed5634c25476afe3d6528
parent59c859d6f2e78344945e8a8406a194156176bc4e
drm/i915: initialize DDI buffer translations

DDI is introduced starting with Haswell GPU generation. So to simplify its
management in the future, we also add intel_ddi.c to hold all the
DDI-related items.

Buffer translations for DDI links must be initialized prior to enablement.
For FDI and DP, first 9 pairs of values are used to select the connection
parameters. HDMI uses the last pair of values and ignores the first 9
pairs. So we program HDMI values in both cases, which allows HDMI to work
over both FDI and DP-friendly buffers.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/Makefile
drivers/gpu/drm/i915/intel_ddi.c [new file with mode: 0644]
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_drv.h