linux-kernel - [PATCH AUTOSEL 6.12 201/486] drm/amd/display: Request HW cursor on DCN3.2 with SubVP

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Message-Id: <20250505223922.2682012-201-sashal@kernel.org>
Date: Mon,  5 May 2025 18:34:37 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Aric Cyr <Aric.Cyr@....com>,
	Aric Cyr <aric.cyr@....com>,
	Wayne Lin <wayne.lin@....com>,
	Daniel Wheeler <daniel.wheeler@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Sasha Levin <sashal@...nel.org>,
	harry.wentland@....com,
	sunpeng.li@....com,
	christian.koenig@....com,
	airlied@...il.com,
	simona@...ll.ch,
	austin.zheng@....com,
	jun.lei@....com,
	siqueira@...lia.com,
	alex.hung@....com,
	alvin.lee2@....com,
	aurabindo.pillai@....com,
	Ilya.Bakoulin@....com,
	mario.limonciello@....com,
	Wayne.Lin@....com,
	Josip.Pavic@....com,
	dillon.varone@....com,
	wenjing.liu@....com,
	linux@...blig.org,
	Leo.Zeng@....com,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.12 201/486] drm/amd/display: Request HW cursor on DCN3.2 with SubVP

From: Aric Cyr <Aric.Cyr@....com>

[ Upstream commit b74f46f3ce1e5f6336645f1e9ff47c56d5dfdef1 ]

[why]
When SubVP is active the HW cursor size is limited to 64x64, and
anything larger will force composition which is bad for gaming on
DCN3.2 if the game uses a larger cursor.

[how]
If HW cursor is requested, typically by a fullscreen game, do not
enable SubVP so that up to 256x256 cursor sizes are available for
DCN3.2.

Reviewed-by: Aric Cyr <aric.cyr@....com>
Signed-off-by: Aric Cyr <Aric.Cyr@....com>
Signed-off-by: Wayne Lin <wayne.lin@....com>
Tested-by: Daniel Wheeler <daniel.wheeler@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c             | 3 ++-
 drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 216b525bd75e7..762bf04efe7ed 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -4734,7 +4734,8 @@ static bool full_update_required(struct dc *dc,
 			stream_update->lut3d_func ||
 			stream_update->pending_test_pattern ||
 			stream_update->crtc_timing_adjust ||
-			stream_update->scaler_sharpener_update))
+			stream_update->scaler_sharpener_update ||
+			stream_update->hw_cursor_req))
 		return true;
 
 	if (stream) {
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 6f490d8d7038c..56dda686e2992 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -626,6 +626,7 @@ static bool dcn32_assign_subvp_pipe(struct dc *dc,
 		 * - Not TMZ surface
 		 */
 		if (pipe->plane_state && !pipe->top_pipe && !pipe->prev_odm_pipe && !dcn32_is_center_timing(pipe) &&
+				!pipe->stream->hw_cursor_req &&
 				!(pipe->stream->timing.pix_clk_100hz / 10000 > DCN3_2_MAX_SUBVP_PIXEL_RATE_MHZ) &&
 				(!dcn32_is_psr_capable(pipe) || (context->stream_count == 1 && dc->caps.dmub_caps.subvp_psr)) &&
 				dc_state_get_pipe_subvp_type(context, pipe) == SUBVP_NONE &&
-- 
2.39.5