[Intel-gfx] [PATCH v3 11/11] drm/i915: remove intel_pipe_set_base()

[Gustavo Padovan]

2014-10-07 Ville Syrjälä <ville.syrjala at linux.intel.com>:

> On Wed, Sep 24, 2014 at 02:20:32PM -0300, Gustavo Padovan wrote:
> > From: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
> > 
> > After some refactor intel_primary_plane_setplane() does the same
> > as intel_pipe_set_base() so we can get rid of it and replace the calls
> > with intel_primary_plane_setplane().
> > 
> > v2: take Ville's comments:
> > 	- get the right arguments for update_plane()
> > 	- use drm_crtc_get_hv_timing()
> > 
> > Signed-off-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
> > ---
> >  drivers/gpu/drm/i915/intel_display.c | 89 ++++++++----------------------------
> >  1 file changed, 18 insertions(+), 71 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> > index 9dd4952..f7c2e5f 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -2857,74 +2857,6 @@ static void intel_update_pipe_size(struct intel_crtc *crtc)
> >  	crtc->config.pipe_src_h = adjusted_mode->crtc_vdisplay;
> >  }
> >  
> > -static int
> > -intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
> > -		    struct drm_framebuffer *fb)
> > -{
> > -	struct drm_device *dev = crtc->dev;
> > -	struct drm_i915_private *dev_priv = dev->dev_private;
> > -	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> > -	enum pipe pipe = intel_crtc->pipe;
> > -	struct drm_framebuffer *old_fb = crtc->primary->fb;
> > -	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
> > -	struct drm_i915_gem_object *old_obj = intel_fb_obj(old_fb);
> > -	int ret;
> > -
> > -	if (intel_crtc_has_pending_flip(crtc)) {
> > -		DRM_ERROR("pipe is still busy with an old pageflip\n");
> > -		return -EBUSY;
> > -	}
> > -
> > -	/* no fb bound */
> > -	if (!fb) {
> > -		DRM_ERROR("No FB bound\n");
> > -		return 0;
> > -	}
> > -
> > -	if (intel_crtc->plane > INTEL_INFO(dev)->num_pipes) {
> > -		DRM_ERROR("no plane for crtc: plane %c, num_pipes %d\n",
> > -			  plane_name(intel_crtc->plane),
> > -			  INTEL_INFO(dev)->num_pipes);
> > -		return -EINVAL;
> > -	}
> > -
> > -	mutex_lock(&dev->struct_mutex);
> > -	ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
> > -	if (ret == 0)
> > -		i915_gem_track_fb(old_obj, obj,
> > -				  INTEL_FRONTBUFFER_PRIMARY(pipe));
> > -	mutex_unlock(&dev->struct_mutex);
> > -	if (ret != 0) {
> > -		DRM_ERROR("pin & fence failed\n");
> > -		return ret;
> > -	}
> > -
> > -	intel_update_pipe_size(intel_crtc);
> > -
> > -	dev_priv->display.update_primary_plane(crtc, fb, x, y);
> > -
> > -	if (intel_crtc->active)
> > -		intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_PRIMARY(pipe));
> > -
> > -	crtc->primary->fb = fb;
> > -	crtc->x = x;
> > -	crtc->y = y;
> > -
> > -	if (old_fb) {
> > -		if (intel_crtc->active && old_fb != fb)
> > -			intel_wait_for_vblank(dev, intel_crtc->pipe);
> > -		mutex_lock(&dev->struct_mutex);
> > -		intel_unpin_fb_obj(old_obj);
> > -		mutex_unlock(&dev->struct_mutex);
> > -	}
> > -
> > -	mutex_lock(&dev->struct_mutex);
> > -	intel_update_fbc(dev);
> > -	mutex_unlock(&dev->struct_mutex);
> > -
> > -	return 0;
> > -}
> > -
> >  static void intel_fdi_normal_train(struct drm_crtc *crtc)
> >  {
> >  	struct drm_device *dev = crtc->dev;
> > @@ -9681,6 +9613,8 @@ static int intel_crtc_commit_page_flip(struct drm_crtc *crtc,
> >  	struct drm_framebuffer *old_fb = crtc->primary->fb;
> >  	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
> >  	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> > +	struct drm_plane *primary = crtc->primary;
> > +	struct intel_plane *intel_plane = to_intel_plane(primary);
> >  	enum pipe pipe = intel_crtc->pipe;
> >  	struct intel_unpin_work *work;
> >  	struct intel_engine_cs *ring;
> > @@ -9822,7 +9756,15 @@ free_work:
> >  	if (ret == -EIO) {
> >  out_hang:
> >  		intel_crtc_wait_for_pending_flips(crtc);
> > -		ret = intel_pipe_set_base(crtc, crtc->x, crtc->y, fb);
> > +		ret = primary->funcs->update_plane(primary, crtc, fb,
> > +						   intel_plane->crtc_x,
> > +						   intel_plane->crtc_y,
> > +						   intel_plane->crtc_h,
> > +						   intel_plane->crtc_w,
> > +						   intel_plane->src_x,
> > +						   intel_plane->src_y,
> > +						   intel_plane->src_h,
> > +						   intel_plane->src_w);
> >  		if (ret == 0 && event) {
> >  			spin_lock_irq(&dev->event_lock);
> >  			drm_send_vblank_event(dev, pipe, event);
> > @@ -11359,11 +11301,16 @@ static int intel_crtc_set_config(struct drm_mode_set *set)
> >  				     set->x, set->y, set->fb);
> >  	} else if (config->fb_changed) {
> >  		struct intel_crtc *intel_crtc = to_intel_crtc(set->crtc);
> > +		struct drm_plane *primary = set->crtc->primary;
> > +		int vdisplay, hdisplay;
> >  
> >  		intel_crtc_wait_for_pending_flips(set->crtc);
> >  
> > -		ret = intel_pipe_set_base(set->crtc,
> > -					  set->x, set->y, set->fb);
> > +		drm_crtc_get_hv_timing(set->mode, &hdisplay, &vdisplay);
> > +		ret = primary->funcs->update_plane(primary, set->crtc, set->fb,
> > +						   0, 0, hdisplay, vdisplay,
> > +						   set->x << 16, set->y << 16,
> > +						   hdisplay << 16, vdisplay << 16);
> >  
> 
> These two look like they should do the right thing. But we still have
> the mode_change==true path to worry about. If we don't call
> update_plane() there we migth never populate intel_plane->crtc_x & co.
> 
> So I think you'll just need to replace the small piece of pin/unpin code
> in __intel_set_mode() with a call to update_plane(). Since the crtc is
> not active at that point it will skip the actual plane register
> programming and intel_enable_primary_hw_plane() will later do all that.

Yes, this is a pending patch that I have here. It does exactly what you are
saying but it breaks everything. It needs more work I think, the simple
replacement by an update_plane() doesn't work.

	Gustavo