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drm/amd/display: dpia should avoid encoder used by dp2

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[WHY]
In current HPO DP2 implementation, driver would enable/disable DIG
encoder when configuring HPO DP2. Therefore, usb4 dp tunnelling should
not use the DIG encoder if the corresponded phy is used by a HPO DP2
stream.

[HOW]
A DP2 stream is treated as a dig stream.

Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Signed-off-by: Peichen Huang <PeiChen.Huang@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Peichen Huang 2025-02-04 16:00:40 +08:00 committed by Alex Deucher
parent 72d7a7fa1f
commit 73e686939c
1 changed files with 2 additions and 14 deletions
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16
drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
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@ -44,20 +44,8 @@ static bool is_dig_link_enc_stream(struct dc_stream_state *stream)
* yet match.
*/
if (link_enc && ((uint32_t)stream->link->connector_signal & link_enc->output_signals)) {
if (dc_is_dp_signal(stream->signal)) {
/* DIGs do not support DP2.0 streams with 128b/132b encoding. */
struct dc_link_settings link_settings = {0};
stream->ctx->dc->link_srv->dp_decide_link_settings(stream, &link_settings);
if ((link_settings.link_rate >= LINK_RATE_LOW) &&
link_settings.link_rate <= LINK_RATE_HIGH3) {
is_dig_stream = true;
break;
}
} else {
is_dig_stream = true;
break;
}
is_dig_stream = true;
break;
}
}
}