linux-kernel - [PATCH 18/21] drm/msm/dpu: Start frame done timer after encoder kickoff

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Message-ID: <20240829-concurrent-wb-v1-18-502b16ae2ebb@quicinc.com>
Date: Thu, 29 Aug 2024 13:48:39 -0700
From: Jessica Zhang <quic_jesszhan@...cinc.com>
To: Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov
	<dmitry.baryshkov@...aro.org>,
        <quic_abhinavk@...cinc.com>, Sean Paul
	<sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        "David
 Airlie" <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        "Maarten
 Lankhorst" <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard
	<mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>
CC: <quic_ebharadw@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, Rob Clark <robdclark@...omium.org>,
        "Jessica
 Zhang" <quic_jesszhan@...cinc.com>
Subject: [PATCH 18/21] drm/msm/dpu: Start frame done timer after encoder
 kickoff

Create a separate API for starting the encoder frame done timer and call
it after the encoder kickoff is finished

Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c    |  4 +++-
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 21 ++++++++++++++-------
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h |  1 +
 3 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index c8ef59af444c..daf5f751f584 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -970,8 +970,10 @@ void dpu_crtc_commit_kickoff(struct drm_crtc *crtc)
 
 	dpu_vbif_clear_errors(dpu_kms);
 
-	drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask)
+	drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask) {
 		dpu_encoder_kickoff(encoder);
+		dpu_encoder_start_frame_done_timer(encoder);
+	}
 
 	reinit_completion(&dpu_crtc->frame_done_comp);
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index bde385318018..9d495a186eb8 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -1945,18 +1945,12 @@ bool dpu_encoder_is_valid_for_commit(struct drm_encoder *drm_enc)
 	return true;
 }
 
-void dpu_encoder_kickoff(struct drm_encoder *drm_enc)
+void dpu_encoder_start_frame_done_timer(struct drm_encoder *drm_enc)
 {
 	struct dpu_encoder_virt *dpu_enc;
-	struct dpu_encoder_phys *phys;
 	unsigned long timeout_ms;
-	unsigned int i;
 
-	DPU_ATRACE_BEGIN("encoder_kickoff");
 	dpu_enc = to_dpu_encoder_virt(drm_enc);
-
-	trace_dpu_enc_kickoff(DRMID(drm_enc));
-
 	timeout_ms = DPU_ENCODER_FRAME_DONE_TIMEOUT_FRAMES * 1000 /
 			drm_mode_vrefresh(&drm_enc->crtc->state->adjusted_mode);
 
@@ -1964,6 +1958,19 @@ void dpu_encoder_kickoff(struct drm_encoder *drm_enc)
 	mod_timer(&dpu_enc->frame_done_timer,
 			jiffies + msecs_to_jiffies(timeout_ms));
 
+}
+
+void dpu_encoder_kickoff(struct drm_encoder *drm_enc)
+{
+	struct dpu_encoder_virt *dpu_enc;
+	struct dpu_encoder_phys *phys;
+	unsigned int i;
+
+	DPU_ATRACE_BEGIN("encoder_kickoff");
+	dpu_enc = to_dpu_encoder_virt(drm_enc);
+
+	trace_dpu_enc_kickoff(DRMID(drm_enc));
+
 	/* All phys encs are ready to go, trigger the kickoff */
 	_dpu_encoder_kickoff_phys(dpu_enc);
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
index 131bb8b2c0ee..7ab5f9380bf5 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
@@ -216,5 +216,6 @@ void dpu_encoder_cleanup_wb_job(struct drm_encoder *drm_enc,
  * @drm_enc:    Pointer to drm encoder structure
  */
 bool dpu_encoder_is_valid_for_commit(struct drm_encoder *drm_enc);
+void dpu_encoder_start_frame_done_timer(struct drm_encoder *drm_enc);
 
 #endif /* __DPU_ENCODER_H__ */

-- 
2.34.1