drm/amd/display: Fixed corruptions on HPDRX link loss restore

[ Upstream commit 4b08d8c78360241d270396a9de6eb774e88acd00 ]

[why]
Heavy corruption or blank screen reported on wake,
with 6k display connected and FEC enabled

[how]
When Disable/Enable stream for display pipes on HPDRX,
DC should take into account ODM split pipes.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Vladimir Stempen <vladimir.stempen@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Anson Jacob <anson.jacob@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 004e2b3..17e6fd8 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -3023,14 +3023,14 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd
                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->dpms_off &&
-                                       pipe_ctx->stream->link == link)
+                                       pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe)
                                core_link_disable_stream(pipe_ctx);
                }
 
                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->dpms_off &&
-                                       pipe_ctx->stream->link == link)
+                                       pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe)
                                core_link_enable_stream(link->dc->current_state, pipe_ctx);
                }