drm/i915: initialize DDI buffer translations

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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>

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Eugeni Dodonov 2012-05-09 15:37:20 -03:00 • committed by Daniel Vetter

parent 59c859d6f2

commit 45244b8794

4 changed files with 111 additions and 0 deletions

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1

drivers/gpu/drm/i915/Makefile

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107

drivers/gpu/drm/i915/intel_ddi.c

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2

drivers/gpu/drm/i915/intel_display.c

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1

drivers/gpu/drm/i915/intel_drv.h

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