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drm/amd/display: Add hook for MST root branch info

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This allows DM to do any necessary updates before MST discovery starts.

Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nikola Cornij 2018-07-04 19:05:16 -04:00 committed by Alex Deucher
parent bf53769d9f
commit 2068afe649
3 changed files with 17 additions and 0 deletions
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5
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
View File

@ -169,6 +169,11 @@ static void get_payload_table(
mutex_unlock(&mst_mgr->payload_lock); mutex_unlock(&mst_mgr->payload_lock);
} }
void dm_helpers_dp_update_branch_info(
struct dc_context *ctx,
const struct dc_link *link)
{}
/* /*
* Writes payload allocation table in immediate downstream device. * Writes payload allocation table in immediate downstream device.
*/ */

4
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@ -529,6 +529,10 @@ static bool detect_dp(
if (reason == DETECT_REASON_BOOT) if (reason == DETECT_REASON_BOOT)
boot = true; boot = true;
dm_helpers_dp_update_branch_info(
link->ctx,
link);
if (!dm_helpers_dp_mst_start_top_mgr( if (!dm_helpers_dp_mst_start_top_mgr(
link->ctx, link->ctx,
link, boot)) { link, boot)) {

8
drivers/gpu/drm/amd/display/dc/dm_helpers.h
View File

@ -40,6 +40,14 @@ enum dc_edid_status dm_helpers_parse_edid_caps(
const struct dc_edid *edid, const struct dc_edid *edid,
struct dc_edid_caps *edid_caps); struct dc_edid_caps *edid_caps);
/*
* Update DP branch info
*/
void dm_helpers_dp_update_branch_info(
struct dc_context *ctx,
const struct dc_link *link);
/* /*
* Writes payload allocation table in immediate downstream device. * Writes payload allocation table in immediate downstream device.
*/ */