[PATCH 0/5] drm/ast: Fix DP hotplugging and clean up

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Here are a number of updates for ast's ASTDP transmitter code.

So far the ast driver required the DisplayPort to be connected
at boot. Later detection was not supported. Re-connecting the
cable was also not supported. Once atomic_disable powered off
the physical ASTDP connector, there was no way of detecting a
conencted display. Patch 1 makes Hot Plug Detection work. If
ncesessary, the connector's detect helper powers up the physical
connector to read the HPD status.

That's a good oportunity to clean up ast's whole detection code
for ASTDP transmitters. So patch 2 to 4 remove duplicated status
tests throughout the ASTDP code.

Patch 5 simplified the code for reading the display's EDID data
from the firmware.

Tested on AST2600 hardware with an ASTDP transmitter.

Thomas Zimmermann (5):
  drm/ast: astdp: Wake up during connector status detection
  drm/ast: astdp: Test firmware status once during probing
  drm/ast: astdp: Only test HDP state in ast_astdp_is_connected()
  drm/ast: astdp: Perform link training during atomic_enable
  drm/ast: astdp: Clean up EDID reading

 drivers/gpu/drm/ast/ast_dp.c   | 186 +++++++++++++++------------------
 drivers/gpu/drm/ast/ast_drv.h  |   4 +-
 drivers/gpu/drm/ast/ast_main.c |   6 +-
 drivers/gpu/drm/ast/ast_mode.c |  31 +++++-
 drivers/gpu/drm/ast/ast_post.c |   2 +-
 drivers/gpu/drm/ast/ast_reg.h  |  22 ++--
 6 files changed, 126 insertions(+), 125 deletions(-)

-- 
2.45.2




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