drm/i915: add basic Haswell DP link train bits

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Previously, the DP register was used for everything. On Haswell, it
was split into DDI_BUF_CTL (which is the new intel_dp->DP register)
and DP_TP_CTL.

The logic behind this patch is based on a patch written by Shobhit
Kumar, but the way the code was written is very different.

Credits-to: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
[danvet: Fixup the logic error spotted by Jani Nikula.]
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

This commit is contained in:

Paulo Zanoni 2012-10-15 15:51:34 -03:00 • committed by Daniel Vetter

parent 068759bd6e

commit d6c0d722ae

2 changed files with 102 additions and 6 deletions

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4

drivers/gpu/drm/i915/i915_reg.h

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104

drivers/gpu/drm/i915/intel_dp.c

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