drm/amd/display: fix 270 degree rotation for mixed-SLS mode
authorSamson Tam <Samson.Tam@amd.com>
Thu, 28 Nov 2019 20:55:01 +0000 (15:55 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 18 Dec 2019 21:09:10 +0000 (16:09 -0500)
commit89d07b662f5e2d74c439f9a7cbefa41b3e76d745
treec38d3322092ca6e419e8abb47fc1c998b46db55d
parent1f0674fd5c536be4462cad2bfdfc8f1648039ab5
drm/amd/display: fix 270 degree rotation for mixed-SLS mode

[Why]
When we rotate 270 in mixed SLS mode, the recouts occupy the
right side of the display.  So all the recout_skip_v values
are relative to the left side of the display.  This causes
adjust_vp_and_init_for_seamless_clip() to incorrectly increase
the data->viewport.height for that recout.  The rotation looks
like the bottom half is duplicated twice.

[How]
recout.x values are being adjusted based on
stream->timing.h_border_left.  Instead of using h_border_left,
use dst.x to represent the border.  Shift dst.x by the amount of
stream->timing.h_border_left and set
stream->timing.h_border_left to 0.  Do all the calculations
and then revert stream->timing.h_border_left and
stream->dst.x back to their original values.
When calculating pipe_ctx->plane_res.scl_data.h_active,
make sure to use the original stream->timing.h_border_left
value.

Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/core/dc_resource.c