linux-kernel - [PATCH 5.18 0429/1095] drm/msm/dpu: Fix for non-visible planes

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Date:   Mon, 15 Aug 2022 19:57:08 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Rob Clark <robdclark@...omium.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 0429/1095] drm/msm/dpu: Fix for non-visible planes

From: Rob Clark <robdclark@...omium.org>

[ Upstream commit cb77085b1f0a86ef9dfba86b5f3ed6c3340c2ea3 ]

Fixes `kms_cursor_crc --run-subtest cursor-offscreen`.. when the cursor
moves offscreen the plane becomes non-visible, so we need to skip over
it in crtc atomic test and mixer setup.

Signed-off-by: Rob Clark <robdclark@...omium.org>
Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/492819/
Link: https://lore.kernel.org/r/20220707212003.1710163-1-robdclark@gmail.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 16ba9f9b9a78..32715399a7c1 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -361,6 +361,9 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc *crtc,
 		if (!state)
 			continue;
 
+		if (!state->visible)
+			continue;
+
 		pstate = to_dpu_plane_state(state);
 		fb = state->fb;
 
@@ -1125,6 +1128,9 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
 		if (cnt >= DPU_STAGE_MAX * 4)
 			continue;
 
+		if (!pstate->visible)
+			continue;
+
 		pstates[cnt].dpu_pstate = dpu_pstate;
 		pstates[cnt].drm_pstate = pstate;
 		pstates[cnt].stage = pstate->normalized_zpos;
-- 
2.35.1