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drm/amd/display: check pipe_ctx is split pipe or not

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[Why]
Driver use pipe_ctx to reallocate payload may cause allocate
payload twice on same sink with split pipe.

[How]
Drvier must to check pipe_ctx is split pipe or not to avoid
reallocate payload twice on same sink.

Signed-off-by: Paul Hsieh <paul.hsieh@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Paul Hsieh 2020-01-09 15:11:06 +08:00 committed by Alex Deucher
parent 830821a64d
commit 14ae7665e7
1 changed files with 15 additions and 2 deletions
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17
drivers/gpu/drm/amd/display/dc/core/dc_link.c
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@ -2882,7 +2882,16 @@ enum dc_status dc_link_reallocate_mst_payload(struct dc_link *link)
// Clear all of MST payload then reallocate
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx && pipe_ctx->stream && pipe_ctx->stream->link == link &&
/* driver enable split pipe for external monitors
* we have to check pipe_ctx is split pipe or not
* If it's split pipe, driver using top pipe to
* reaallocate.
*/
if (!pipe_ctx || pipe_ctx->top_pipe)
continue;
if (pipe_ctx->stream && pipe_ctx->stream->link == link &&
pipe_ctx->stream->dpms_off == false &&
pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
deallocate_mst_payload(pipe_ctx);
@ -2891,7 +2900,11 @@ enum dc_status dc_link_reallocate_mst_payload(struct dc_link *link)
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx && pipe_ctx->stream && pipe_ctx->stream->link == link &&
if (!pipe_ctx || pipe_ctx->top_pipe)
continue;
if (pipe_ctx->stream && pipe_ctx->stream->link == link &&
pipe_ctx->stream->dpms_off == false &&
pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
/* enable/disable PHY will clear connection between BE and FE