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drm/amd/display: create a function to decide mst link settings

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[why]
create a dedicated function to make mst link settings decision, so that
the policy's decision is made in a unified place.

Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wenjing Liu 2020-07-09 17:08:50 -04:00 • committed by Alex Deucher
parent 5a7c86e168
commit c08321cb18
1 changed files with 9 additions and 5 deletions
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14
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
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@ -2431,6 +2431,12 @@ static bool decide_edp_link_settings(struct dc_link *link, struct dc_link_settin
return false;
}
static bool decide_mst_link_settings(const struct dc_link *link, struct dc_link_settings *link_setting)
{
*link_setting = link->verified_link_cap;
return true;
}
void decide_link_settings(struct dc_stream_state *stream,
struct dc_link_settings *link_setting)
{
@ -2456,11 +2462,9 @@ void decide_link_settings(struct dc_stream_state *stream,
* TODO: add MST specific link training routine
*/
if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
*link_setting = link->verified_link_cap;
return;
}
if (link->connector_signal == SIGNAL_TYPE_EDP) {
if (decide_mst_link_settings(link, link_setting))
return;
} else if (link->connector_signal == SIGNAL_TYPE_EDP) {
if (decide_edp_link_settings(link, link_setting, req_bw))
return;
} else if (decide_dp_link_settings(link, link_setting, req_bw))