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

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On Thu, Aug 29, 2024 at 01:48:39PM GMT, Jessica Zhang wrote:
> 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@xxxxxxxxxxx>
> ---
>  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)

Docs please. With this fixed and with the reason for the change being
added to the commit message:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

>  {
>  	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);
>  

-- 
With best wishes
Dmitry




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