drm/amd/display: Fix takover from VGA mode

Browse source

HW Engineer's Notes:
 During switch from vga->extended, if we set the VGA_TEST_ENABLE and then
 hit the VGA_TEST_RENDER_START, then the DCHUBP timing gets updated correctly.
 Then vBIOS will have it poll for the VGA_TEST_RENDER_DONE and unset
 VGA_TEST_ENABLE, to leave it in the same state as before.

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Bhawanpreet Lakha 2018-02-27 12:12:46 -05:00 • committed by Alex Deucher

parent 316178f072

commit 90e3103e19

2 changed files with 18 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

10

drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h

View file

10

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

View file