linux-kernel - [PATCH RFT] drm/msm/dpu: enable virtual planes by default

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Message-Id: <20250514-dpu-enable-virt-planes-v1-1-bf5ba0088007@oss.qualcomm.com>
Date: Wed, 14 May 2025 02:30:00 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <lumag@...nel.org>, Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH RFT] drm/msm/dpu: enable virtual planes by default

Turn on the switch and use virtual planes by default, enhancing
utilisation of the display pipelines. It is still possible to use legacy
implementation by using `msm.dpu_use_virtual_planes=false` kernel boot
parameter.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
This is being sent as an RFT for now. Please give it a test with your
compositor of choice. X11. Weston. Sway. Wlroot. CrOS. I plan to turn
the switch for 6.17.
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 1fd82b6747e9058ce11dc2620729921492d5ebdd..5c0ae6a15d0a55c7568bd7850509390a93cf2bca 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -51,7 +51,7 @@
 #define DPU_DEBUGFS_DIR "msm_dpu"
 #define DPU_DEBUGFS_HWMASKNAME "hw_log_mask"
 
-bool dpu_use_virtual_planes;
+bool dpu_use_virtual_planes = true;
 module_param(dpu_use_virtual_planes, bool, 0);
 
 static int dpu_kms_hw_init(struct msm_kms *kms);

---
base-commit: 8f5264d302e803e7ef82a61f9632a0d2ef67413f
change-id: 20250514-dpu-enable-virt-planes-7b7ce0a6ce2a

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>