linux-kernel - [PATCH] drm: msm: Quiet down plane errors in atomic

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Date:   Tue,  7 Jan 2020 20:28:52 +0000
From:   John Stultz <john.stultz@...aro.org>
To:     lkml <linux-kernel@...r.kernel.org>
Cc:     John Stultz <john.stultz@...aro.org>, Todd Kjos <tkjos@...gle.com>,
        Alistair Delva <adelva@...gle.com>,
        Amit Pundir <amit.pundir@...aro.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org
Subject: [PATCH] drm: msm: Quiet down plane errors in atomic_check

With the db845c running AOSP, I see the following error on every
frame on the home screen:
  [drm:dpu_plane_atomic_check:915] [dpu error]plane33 invalid src 2880x1620+0+470 line:2560

This is due to the error paths in atomic_check using
DPU_ERROR_PLANE(), and the drm_hwcomposer using atomic_check
to decide how to composite the frame (thus it expects to see
atomic_check to fail).

In order to avoid spamming the logs, this patch converts the
DPU_ERROR_PLANE() calls to DPU_DEBUG_PLANE() calls in
atomic_check.

Cc: Todd Kjos <tkjos@...gle.com>
Cc: Alistair Delva <adelva@...gle.com>
Cc: Amit Pundir <amit.pundir@...aro.org>
Cc: Rob Clark <robdclark@...il.com>
Cc: Sean Paul <sean@...rly.run>
Cc: David Airlie <airlied@...ux.ie>
Cc: Daniel Vetter <daniel@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org
Cc: freedreno@...ts.freedesktop.org
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 58d5acbcfc5c..d19ae0b51d1c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -858,7 +858,7 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
 					  pdpu->pipe_sblk->maxupscale << 16,
 					  true, true);
 	if (ret) {
-		DPU_ERROR_PLANE(pdpu, "Check plane state failed (%d)\n", ret);
+		DPU_DEBUG_PLANE(pdpu, "Check plane state failed (%d)\n", ret);
 		return ret;
 	}
 	if (!state->visible)
@@ -884,13 +884,13 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
 		(!(pdpu->features & DPU_SSPP_SCALER) ||
 		 !(pdpu->features & (BIT(DPU_SSPP_CSC)
 		 | BIT(DPU_SSPP_CSC_10BIT))))) {
-		DPU_ERROR_PLANE(pdpu,
+		DPU_DEBUG_PLANE(pdpu,
 				"plane doesn't have scaler/csc for yuv\n");
 		return -EINVAL;
 
 	/* check src bounds */
 	} else if (!dpu_plane_validate_src(&src, &fb_rect, min_src_size)) {
-		DPU_ERROR_PLANE(pdpu, "invalid source " DRM_RECT_FMT "\n",
+		DPU_DEBUG_PLANE(pdpu, "invalid source " DRM_RECT_FMT "\n",
 				DRM_RECT_ARG(&src));
 		return -E2BIG;
 
@@ -899,19 +899,19 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
 		   (src.x1 & 0x1 || src.y1 & 0x1 ||
 		    drm_rect_width(&src) & 0x1 ||
 		    drm_rect_height(&src) & 0x1)) {
-		DPU_ERROR_PLANE(pdpu, "invalid yuv source " DRM_RECT_FMT "\n",
+		DPU_DEBUG_PLANE(pdpu, "invalid yuv source " DRM_RECT_FMT "\n",
 				DRM_RECT_ARG(&src));
 		return -EINVAL;
 
 	/* min dst support */
 	} else if (drm_rect_width(&dst) < 0x1 || drm_rect_height(&dst) < 0x1) {
-		DPU_ERROR_PLANE(pdpu, "invalid dest rect " DRM_RECT_FMT "\n",
+		DPU_DEBUG_PLANE(pdpu, "invalid dest rect " DRM_RECT_FMT "\n",
 				DRM_RECT_ARG(&dst));
 		return -EINVAL;
 
 	/* check decimated source width */
 	} else if (drm_rect_width(&src) > max_linewidth) {
-		DPU_ERROR_PLANE(pdpu, "invalid src " DRM_RECT_FMT " line:%u\n",
+		DPU_DEBUG_PLANE(pdpu, "invalid src " DRM_RECT_FMT " line:%u\n",
 				DRM_RECT_ARG(&src), max_linewidth);
 		return -E2BIG;
 	}
-- 
2.17.1