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radeon_hd: Start work on proper DP link training

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* The AtomBIOS timeout fix has made my DP bridge
  stop working
* The current DisplayPort code is a little lacking
  on DP link training... I think thats the cause.
* This puts the first steps towards DP training
  in place.
* I plan on trying to make some of this DP stuff
  common accelerant stuff after it works.
This commit is contained in:
Alexander von Gluck IV
2012-03-14 06:22:59 -05:00
parent 6f7c0aadbe
commit 83e3a8ea50
5 changed files with 290 additions and 24 deletions
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headers/private/graphics/radeon_hd/displayport_reg.h
+1
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@@ -136,6 +136,7 @@
#define DP_INTERLANE_ALIGN_DONE (1 << 0)
#define DP_DOWNSTREAM_PORT_STATUS_CHANGED (1 << 6)
#define DP_LINK_STATUS_UPDATED (1 << 7)
#define DP_LINK_STATUS_SIZE 6
#define DP_SINK_STATUS 0x205