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drm/amd/display: Handle seamless boot stream

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commit 170390e587a69b2a24abac39eb3ae6ec28a4d7f2 upstream

A seamless boot stream has hardware resources assigned to it, and adding
a new stream means rebuilding the current assignment. It is desirable to
avoid this situation since it may cause light-up issues on the VGA
monitor on USB-C. This commit swaps the seamless boot stream to pipe 0
(if necessary) to ensure that the pipe context matches.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Co-developed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rodrigo Siqueira 2023-08-11 16:07:01 -05:00 committed by Greg Kroah-Hartman
parent 9b1a1f168c
commit b2415df0af
1 changed files with 15 additions and 0 deletions
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15
drivers/gpu/drm/amd/display/dc/core/dc_resource.c
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@ -2788,6 +2788,21 @@ enum dc_status dc_validate_with_context(struct dc *dc,
goto fail;
}
/* Swap seamless boot stream to pipe 0 (if needed) to ensure pipe_ctx
* matches. This may change in the future if seamless_boot_stream can be
* multiple.
*/
for (i = 0; i < add_streams_count; i++) {
mark_seamless_boot_stream(dc, add_streams[i]);
if (add_streams[i]->apply_seamless_boot_optimization && i != 0) {
struct dc_stream_state *temp = add_streams[0];
add_streams[0] = add_streams[i];
add_streams[i] = temp;
break;
}
}
/* Add new streams and then add all planes for the new stream */
for (i = 0; i < add_streams_count; i++) {
calculate_phy_pix_clks(add_streams[i]);