From: Paul Hsieh <paul.hs...@amd.com>
[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.hs...@amd.com>
Reviewed-by: Tony Cheng <tony.ch...@amd.com>
Acked-by: Bhawanpreet Lakha <bhawanpreet.la...@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 260c0b62d37d..a50768a7ba68 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -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
--
2.17.1
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