[PATCH v2 5/8] drm/msm/dpu: rework vsync_source handling

[Dmitry Baryshkov]

On Thu, Jun 13, 2024 at 08:21:59PM GMT, Marijn Suijten wrote:
> Maybe retitle this to something that more closely resembles "remove unset
> is_te_using_watchdog_timer field"?

Well, it really moves vsync_source selection to
_dpu_kms_initialize_dsi(), it doesn't just drop the
is_te_using_watchdog_timer.

> 
> On 2024-06-13 20:05:08, Dmitry Baryshkov wrote:
> > The struct msm_display_info has is_te_using_watchdog_timer field which
> > is neither used anywhere nor is flexible enough to specify different
> 
> Well, it's "used", but not "set" (to anything other than the zero-initialized
> default). s/used/set?

ack

> 
> > sources. Replace it with the field specifying the vsync source using
> > enum dpu_vsync_source.
> > 
> > Reviewed-by: Abhinav Kumar <quic_abhinavk at quicinc.com>
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> 
> Patch itself is fine, just think the title could be clearer:
> 
> Reviewed-by: Marijn Suijten <marijn.suijten at somainline.org>
> 
> > ---
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 5 +----
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 5 ++---
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     | 2 ++
> >  3 files changed, 5 insertions(+), 7 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > index bd37a56b4d03..b147f8814a18 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > @@ -743,10 +743,7 @@ static void _dpu_encoder_update_vsync_source(struct dpu_encoder_virt *dpu_enc,
> >  		vsync_cfg.pp_count = dpu_enc->num_phys_encs;
> >  		vsync_cfg.frame_rate = drm_mode_vrefresh(&dpu_enc->base.crtc->state->adjusted_mode);
> >  
> > -		if (disp_info->is_te_using_watchdog_timer)
> > -			vsync_cfg.vsync_source = DPU_VSYNC_SOURCE_WD_TIMER_0;
> > -		else
> > -			vsync_cfg.vsync_source = DPU_VSYNC_SOURCE_GPIO_0;
> > +		vsync_cfg.vsync_source = disp_info->vsync_source;
> >  
> >  		hw_mdptop->ops.setup_vsync_source(hw_mdptop, &vsync_cfg);
> >  
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> > index 76be77e30954..cb59bd4436f4 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> > @@ -26,15 +26,14 @@
> >   * @h_tile_instance:    Controller instance used per tile. Number of elements is
> >   *                      based on num_of_h_tiles
> >   * @is_cmd_mode		Boolean to indicate if the CMD mode is requested
> > - * @is_te_using_watchdog_timer:  Boolean to indicate watchdog TE is
> > - *				 used instead of panel TE in cmd mode panels
> > + * @vsync_source:	Source of the TE signal for DSI CMD devices
> >   */
> >  struct msm_display_info {
> >  	enum dpu_intf_type intf_type;
> >  	uint32_t num_of_h_tiles;
> >  	uint32_t h_tile_instance[MAX_H_TILES_PER_DISPLAY];
> >  	bool is_cmd_mode;
> > -	bool is_te_using_watchdog_timer;
> > +	enum dpu_vsync_source vsync_source;
> >  };
> >  
> >  /**
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> > index 1955848b1b78..e9991f3756d4 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> > @@ -543,6 +543,8 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
> >  
> >  		info.is_cmd_mode = msm_dsi_is_cmd_mode(priv->dsi[i]);
> >  
> > +		info.vsync_source = DPU_VSYNC_SOURCE_GPIO_0;
> > +
> >  		encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_DSI, &info);
> >  		if (IS_ERR(encoder)) {
> >  			DPU_ERROR("encoder init failed for dsi display\n");
> > 
> > -- 
> > 2.39.2
> > 

-- 
With best wishes
Dmitry