From: Relja Vojvodic <relja.vojvo...@amd.com>

[ Upstream commit 292c2116b2ae84c7e799ae340981e60551b18f5e ]

For certain dual display configs that had one display using a 1080p
mode, the DPM level used to drive the configs regressed from DPM 0 to
DPM 3. This was caused by a missing check that should have only limited
the pipe segments on non-phantom pipes. This caused issues with detile
buffer allocation, which dissallow subvp from being used

Tested-by: Daniel Wheeler <daniel.whee...@amd.com>
Reviewed-by: Dillon Varone <dillon.var...@amd.com>
Reviewed-by: Martin Leung <martin.le...@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
Signed-off-by: Relja Vojvodic <relja.vojvo...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c 
b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
index bc5f0db23d0c..a9c45174abed 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
@@ -290,7 +290,7 @@ static void override_det_for_subvp(struct dc *dc, struct 
dc_state *context, uint
                for (i = 0; i < dc->res_pool->pipe_count; i++) {
                        struct pipe_ctx *pipe_ctx = 
&context->res_ctx.pipe_ctx[i];
 
-                       if (pipe_ctx->stream && pipe_ctx->plane_state && 
pipe_ctx->stream->mall_stream_config.type != SUBVP_PHANTOM) {
+                       if (pipe_ctx->stream && pipe_ctx->plane_state && 
pipe_ctx->stream->mall_stream_config.type != SUBVP_PHANTOM != SUBVP_PHANTOM) {
                                if (pipe_ctx->stream->timing.v_addressable == 
1080 && pipe_ctx->stream->timing.h_addressable == 1920) {
                                        if (pipe_segments[i] > 4)
                                                pipe_segments[i] = 4;
-- 
2.43.0

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