linux-kernel - [PATCH] drm/msm/dpu: add missing flush and fetch bits for DMA4/DMA5 planes

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Message-Id: <20230704160106.26055-1-jonathan@marek.ca>
Date:   Tue,  4 Jul 2023 12:01:04 -0400
From:   Jonathan Marek <jonathan@...ek.ca>
To:     freedreno@...ts.freedesktop.org
Cc:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kalyan Thota <quic_kalyant@...cinc.com>,
        linux-arm-msm@...r.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU),
        dri-devel@...ts.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO
        GPU), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] drm/msm/dpu: add missing flush and fetch bits for DMA4/DMA5 planes

Note that with this, DMA4/DMA5 are still non-functional, but at least
display *something* in modetest instead of nothing or underflow.

Fixes: efcd0107727c ("drm/msm/dpu: add support for SM8550")
Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
index bbdc95ce374a..52222af5975f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -51,7 +51,7 @@
 
 static const u32 fetch_tbl[SSPP_MAX] = {CTL_INVALID_BIT, 16, 17, 18, 19,
 	CTL_INVALID_BIT, CTL_INVALID_BIT, CTL_INVALID_BIT, CTL_INVALID_BIT, 0,
-	1, 2, 3, CTL_INVALID_BIT, CTL_INVALID_BIT};
+	1, 2, 3, 4, 5};
 
 static const struct dpu_ctl_cfg *_ctl_offset(enum dpu_ctl ctl,
 		const struct dpu_mdss_cfg *m,
@@ -206,6 +206,12 @@ static void dpu_hw_ctl_update_pending_flush_sspp(struct dpu_hw_ctl *ctx,
 	case SSPP_DMA3:
 		ctx->pending_flush_mask |= BIT(25);
 		break;
+	case SSPP_DMA4:
+		ctx->pending_flush_mask |= BIT(13);
+		break;
+	case SSPP_DMA5:
+		ctx->pending_flush_mask |= BIT(14);
+		break;
 	case SSPP_CURSOR0:
 		ctx->pending_flush_mask |= BIT(22);
 		break;
-- 
2.26.1