Re: [PATCH v3 06/11] drm/i915: split intel_crtc_page_flip() into check() and commit()

From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Gustavo Padovan <gustavo@padovan.org>
Cc: intel-gfx@lists.freedesktop.org,
	Daniel Stone <daniels@collabora.com>,
	dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v3 06/11] drm/i915: split intel_crtc_page_flip() into check() and commit()
Date: Tue, 7 Oct 2014 18:44:17 +0300	[thread overview]
Message-ID: <20141007154417.GA32511@intel.com> (raw)
In-Reply-To: <1411579232-8668-6-git-send-email-gustavo@padovan.org>

On Wed, Sep 24, 2014 at 02:20:27PM -0300, Gustavo Padovan wrote:
> From: Daniel Stone <daniels@collabora.com>
> 
> Start the work of splitting the intel_crtc_page_flip() for later use
> by the atomic modesetting API.

At this time this doesn't really do anything so I don't see much point
in applying it, for now at least.

> 
> Signed-off-by: Daniel Stone <daniels@collabora.com>
> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 51 ++++++++++++++++++++++++++----------
>  1 file changed, 37 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index a583abd..3cb092c 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -9641,23 +9641,11 @@ void intel_check_page_flip(struct drm_device *dev, int pipe)
>  	spin_unlock(&dev->event_lock);
>  }
>  
> -static int intel_crtc_page_flip(struct drm_crtc *crtc,
> -				struct drm_framebuffer *fb,
> -				struct drm_pending_vblank_event *event,
> -				uint32_t page_flip_flags)
> +static int intel_crtc_check_page_flip(struct drm_crtc *crtc,
> +				      struct drm_framebuffer *fb)
>  {
>  	struct drm_device *dev = crtc->dev;
> -	struct drm_i915_private *dev_priv = dev->dev_private;
>  	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);
> -	enum pipe pipe = intel_crtc->pipe;
> -	struct intel_unpin_work *work;
> -	struct intel_engine_cs *ring;
> -	int ret;
> -
> -	//trigger software GT busyness calculation
> -	gen8_flip_interrupt(dev);
>  
>  	/*
>  	 * drm_mode_page_flip_ioctl() should already catch this, but double
> @@ -9680,6 +9668,27 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
>  	     fb->pitches[0] != crtc->primary->fb->pitches[0]))
>  		return -EINVAL;
>  
> +	return 0;
> +}
> +
> +static int intel_crtc_commit_page_flip(struct drm_crtc *crtc,
> +				       struct drm_framebuffer *fb,
> +				       struct drm_pending_vblank_event *event,
> +				       uint32_t page_flip_flags)
> +{
> +	struct drm_device *dev = crtc->dev;
> +	struct drm_i915_private *dev_priv = dev->dev_private;
> +	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);
> +	enum pipe pipe = intel_crtc->pipe;
> +	struct intel_unpin_work *work;
> +	struct intel_engine_cs *ring;
> +	int ret;
> +
> +	/* trigger software GT busyness calculation */
> +	gen8_flip_interrupt(dev);
> +
>  	if (i915_terminally_wedged(&dev_priv->gpu_error))
>  		goto out_hang;
>  
> @@ -9823,6 +9832,20 @@ out_hang:
>  	return ret;
>  }
>  
> +static int intel_crtc_page_flip(struct drm_crtc *crtc,
> +				struct drm_framebuffer *fb,
> +				struct drm_pending_vblank_event *event,
> +				uint32_t page_flip_flags)
> +{
> +	int ret;
> +
> +	ret = intel_crtc_check_page_flip(crtc, fb);
> +	if (ret)
> +		return ret;
> +
> +	return intel_crtc_commit_page_flip(crtc, fb, event, page_flip_flags);
> +}
> +
>  static struct drm_crtc_helper_funcs intel_helper_funcs = {
>  	.mode_set_base_atomic = intel_pipe_set_base_atomic,
>  	.load_lut = intel_crtc_load_lut,
> -- 
> 1.9.3
> 
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-- 
Ville Syrjälä
Intel OTC