diff options
| author | Paul Hsieh <paul.hsieh@amd.com> | 2019-12-27 11:35:33 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-01-16 14:16:54 -0500 |
| commit | ffdaeb1f45ee4414e7ecc2b841bea18bec35d1c0 (patch) | |
| tree | 93fdd859232417f8bfdc9abf6904ba2c824ae82e /drivers/gpu/drm/amd/display/dc/dc_link.h | |
| parent | 34ad0230062c39cdcba564d16d122c0fb467a7d6 (diff) | |
| download | linux-ffdaeb1f45ee4414e7ecc2b841bea18bec35d1c0.tar.bz2 | |
drm/amd/display: reallocate MST payload when link loss
[Why]
Try to allocate MST payload but receive HPD short pulse with link loss
casue driver allocate payload twice. It cause monitor can't light up
successfully.
[How]
When driver receive HPD short pulse with link loss, we need to
deallocate payload then allocate payload.
Then we will not allocate payload twice with same sink.
Signed-off-by: Paul Hsieh <paul.hsieh@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_link.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_link.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index f9aae35aec92..d25603128394 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -205,6 +205,7 @@ enum dc_detect_reason { bool dc_link_detect(struct dc_link *dc_link, enum dc_detect_reason reason); bool dc_link_get_hpd_state(struct dc_link *dc_link); enum dc_status dc_link_allocate_mst_payload(struct pipe_ctx *pipe_ctx); +enum dc_status dc_link_reallocate_mst_payload(struct dc_link *link); /* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt). * Return: |