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FAILED: Patch "drm/amd/display: Change default size for dummy plane in DML2" failed to apply to 5.10-stable tree

PATCH Sasha Levin 1 participant 1 message Mar 27, 2024

Subsystems (4)
Stable branch DRM drivers Radeon and amdgpu DRM drivers AMD display core
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Sasha Levin

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The patch below does not apply to the 5.10-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From 75eb8f7df65c5e6eb22a5aff8deb60ce0b65de1a Mon Sep 17 00:00:00 2001
From: Swapnil Patel <[email protected]>
Date: Tue, 13 Feb 2024 08:09:48 -0500
Subject: [PATCH] drm/amd/display: Change default size for dummy plane in DML2

[WHY & HOW]
Currently, to map dc states into dml_display_cfg,
We create a dummy plane if the stream doesn't have any planes attached to it. This dummy plane uses max addersable width height. This results in certain mode validations failing when they shouldn't.

Cc Mario Limonciello <[email protected]>
Cc Alex Deucher <[email protected]>
Cc [email protected]
Reviewed-by Chaitanya Dhere <[email protected]>
Acked-by Alex Hung <[email protected]>
Signed-off-by Swapnil Patel <[email protected]>
Tested-by Daniel Wheeler <[email protected]>
Signed-off-by Alex Deucher <[email protected]>
---
 .../display/dc/dml2/dml2_translation_helper.c  | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)
drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c +15 -3
index 1ba6933d2b361..17a58f41fc6a8 100644
@@ -824,13 +824,25 @@ static struct scaler_data get_scaler_data_for_plane(const struct dc_plane_state
 
 static void populate_dummy_dml_plane_cfg(struct dml_plane_cfg_st *out, unsigned int location, const struct dc_stream_state *in)
 {
+	dml_uint_t width, height;
+
+	if (in->timing.h_addressable > 3840)
+		width = 3840;
+	else
+		width = in->timing.h_addressable;	// 4K max
+
+	if (in->timing.v_addressable > 2160)
+		height = 2160;
+	else
+		height = in->timing.v_addressable;	// 4K max
+
 	out->CursorBPP[location] = dml_cur_32bit;
 	out->CursorWidth[location] = 256;
 
 	out->GPUVMMinPageSizeKBytes[location] = 256;
 
-	out->ViewportWidth[location] = in->timing.h_addressable;
-	out->ViewportHeight[location] = in->timing.v_addressable;
+	out->ViewportWidth[location] = width;
+	out->ViewportHeight[location] = height;
 	out->ViewportStationary[location] = false;
 	out->ViewportWidthChroma[location] = 0;
 	out->ViewportHeightChroma[location] = 0;

@@ -849,7 +861,7 @@ static void populate_dummy_dml_plane_cfg(struct dml_plane_cfg_st *out, unsigned
 	out->HTapsChroma[location] = 0;
 	out->VTapsChroma[location] = 0;
 	out->SourceScan[location] = dml_rotation_0;
-	out->ScalerRecoutWidth[location] = in->timing.h_addressable;
+	out->ScalerRecoutWidth[location] = width;
 
 	out->LBBitPerPixel[location] = 57;
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