[v4,3/4] drm/msm/dpu: Remove empty prepare_commit() function

Now that the TE setup has been moved to prepare_for_kickoff(),  we have
not prepare_commit() callbacks left. This makes dpu_encoder_prepare_commit()
do nothing. Remove prepare_commit() from DPU driver.

Changes in V3:
- Reworded commit message to be more clear
- Corrected spelling mistake in commit message

Changes in V4:
- Reworded commit message for clarity

Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 19 -------------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h |  7 -------
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     | 21 ---------------------
 3 files changed, 47 deletions(-)

On 21/02/2023 20:42, Jessica Zhang wrote:
> Now that the TE setup has been moved to prepare_for_kickoff(),  we have
> not prepare_commit() callbacks left. This makes dpu_encoder_prepare_commit()
> do nothing. Remove prepare_commit() from DPU driver.
> 
> Changes in V3:
> - Reworded commit message to be more clear
> - Corrected spelling mistake in commit message
> 
> Changes in V4:
> - Reworded commit message for clarity
> 
> Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
> ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 19 -------------------
>   drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h |  7 -------
>   drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     | 21 ---------------------
>   3 files changed, 47 deletions(-)

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

On 2023-03-01 11:08:16, Marijn Suijten wrote:
> On 2023-02-21 10:42:55, Jessica Zhang wrote:
> > Now that the TE setup has been moved to prepare_for_kickoff(),  we have
> > not prepare_commit() callbacks left. This makes dpu_encoder_prepare_commit()
> 
> s/not/no
> 
> > do nothing. Remove prepare_commit() from DPU driver.
> 
> And again, this:
> 
> > Changes in V3:
> > - Reworded commit message to be more clear
> > - Corrected spelling mistake in commit message
> > 
> > Changes in V4:
> > - Reworded commit message for clarity
> 
> ... should go below the cut.
> 
> > Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
> 
> With the above two issues fixed:
> 
> Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
> 
> > ---
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 19 -------------------
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h |  7 -------
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     | 21 ---------------------
> >  3 files changed, 47 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > index dcceed91aed8..35e120b5ef53 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > @@ -2090,25 +2090,6 @@ void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc)
> >  	ctl->ops.clear_pending_flush(ctl);
> >  }
> >  
> > -void dpu_encoder_prepare_commit(struct drm_encoder *drm_enc)
> > -{
> > -	struct dpu_encoder_virt *dpu_enc;
> > -	struct dpu_encoder_phys *phys;
> > -	int i;
> > -
> > -	if (!drm_enc) {
> > -		DPU_ERROR("invalid encoder\n");
> > -		return;
> > -	}
> > -	dpu_enc = to_dpu_encoder_virt(drm_enc);
> > -
> > -	for (i = 0; i < dpu_enc->num_phys_encs; i++) {
> > -		phys = dpu_enc->phys_encs[i];
> > -		if (phys->ops.prepare_commit)
> > -			phys->ops.prepare_commit(phys);

In hindsight, Dmitry asked in v2 to remove prepare_commit from
dpu_encoder_phys_ops (and its documentation comment) in
dpu_encoder_phys.h, but that has not happened yet.  Can we do that in a
v5?

- Marijn

> > -	}
> > -}
> > -
> >  #ifdef CONFIG_DEBUG_FS
> >  static int _dpu_encoder_status_show(struct seq_file *s, void *data)
> >  {
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> > index 9e7236ef34e6..2c9ef8d1b877 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> > @@ -146,13 +146,6 @@ struct drm_encoder *dpu_encoder_init(
> >  int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
> >  		struct msm_display_info *disp_info);
> >  
> > -/**
> > - * dpu_encoder_prepare_commit - prepare encoder at the very beginning of an
> > - *	atomic commit, before any registers are written
> > - * @drm_enc:    Pointer to previously created drm encoder structure
> > - */
> > -void dpu_encoder_prepare_commit(struct drm_encoder *drm_enc);
> > -
> >  /**
> >   * dpu_encoder_set_idle_timeout - set the idle timeout for video
> >   *                    and command mode encoders.
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> > index 165958d47ec6..6f7ddbf0d9b7 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> > @@ -425,26 +425,6 @@ static ktime_t dpu_kms_vsync_time(struct msm_kms *kms, struct drm_crtc *crtc)
> >  	return ktime_get();
> >  }
> >  
> > -static void dpu_kms_prepare_commit(struct msm_kms *kms,
> > -		struct drm_atomic_state *state)
> > -{
> > -	struct drm_crtc *crtc;
> > -	struct drm_crtc_state *crtc_state;
> > -	struct drm_encoder *encoder;
> > -	int i;
> > -
> > -	if (!kms)
> > -		return;
> > -
> > -	/* Call prepare_commit for all affected encoders */
> > -	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> > -		drm_for_each_encoder_mask(encoder, crtc->dev,
> > -					  crtc_state->encoder_mask) {
> > -			dpu_encoder_prepare_commit(encoder);
> > -		}
> > -	}
> > -}
> > -
> >  static void dpu_kms_flush_commit(struct msm_kms *kms, unsigned crtc_mask)
> >  {
> >  	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
> > @@ -949,7 +929,6 @@ static const struct msm_kms_funcs kms_funcs = {
> >  	.enable_commit   = dpu_kms_enable_commit,
> >  	.disable_commit  = dpu_kms_disable_commit,
> >  	.vsync_time      = dpu_kms_vsync_time,
> > -	.prepare_commit  = dpu_kms_prepare_commit,
> >  	.flush_commit    = dpu_kms_flush_commit,
> >  	.wait_flush      = dpu_kms_wait_flush,
> >  	.complete_commit = dpu_kms_complete_commit,
> > -- 
> > 2.39.2
> >