Re: [PATCH 2/3] drm/i915: Remove atomic.pre_disable_primary.

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Wed, Feb 03, 2016 at 04:53:24PM +0100, Maarten Lankhorst wrote:
> This can be derived from the atomic state in pre_plane_update,
> which makes it more clear when it's supposed to be called.
> 
> Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 25 +++++++++++++++++++------
>  drivers/gpu/drm/i915/intel_drv.h     |  1 -
>  2 files changed, 19 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index de94ef165fbe..c7f2a18ab34e 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4807,19 +4807,33 @@ static void intel_post_plane_update(struct intel_crtc *crtc)
>  	memset(atomic, 0, sizeof(*atomic));
>  }
>  
> -static void intel_pre_plane_update(struct intel_crtc *crtc)
> +static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state)
>  {
> +	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
>  	struct drm_device *dev = crtc->base.dev;
>  	struct drm_i915_private *dev_priv = dev->dev_private;
>  	struct intel_crtc_atomic_commit *atomic = &crtc->atomic;
>  	struct intel_crtc_state *pipe_config =
>  		to_intel_crtc_state(crtc->base.state);
> +	struct drm_atomic_state *old_state = old_crtc_state->base.state;
> +	struct drm_plane *primary = crtc->base.primary;
> +	struct drm_plane_state *old_pri_state =
> +		drm_atomic_get_existing_plane_state(old_state, primary);
> +	bool modeset = needs_modeset(&pipe_config->base);
>  
>  	if (atomic->update_fbc)
>  		intel_fbc_pre_update(crtc);
>  
> -	if (atomic->pre_disable_primary)
> -		intel_pre_disable_primary(&crtc->base);
> +	if (old_pri_state) {

When might we not have and old state for the primary plane?

> +		struct intel_plane_state *primary_state =
> +			to_intel_plane_state(primary->state);
> +		struct intel_plane_state *old_primary_state =
> +			to_intel_plane_state(old_pri_state);
> +
> +		if (old_primary_state->visible &&
> +		    (modeset || !primary_state->visible))
> +			intel_pre_disable_primary(&crtc->base);
> +	}
>  
>  	if (pipe_config->disable_cxsr) {
>  		crtc->wm.cxsr_allowed = false;
> @@ -11883,7 +11897,6 @@ int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
>  
>  	switch (plane->type) {
>  	case DRM_PLANE_TYPE_PRIMARY:
> -		intel_crtc->atomic.pre_disable_primary = turn_off;
>  		intel_crtc->atomic.post_enable_primary = turn_on;
>  		intel_crtc->atomic.update_fbc = true;
>  
> @@ -13495,7 +13508,7 @@ static int intel_atomic_commit(struct drm_device *dev,
>  		if (!needs_modeset(crtc->state))
>  			continue;
>  
> -		intel_pre_plane_update(intel_crtc);
> +		intel_pre_plane_update(to_intel_crtc_state(crtc_state));
>  
>  		if (crtc_state->active) {
>  			intel_crtc_disable_planes(crtc, crtc_state->plane_mask);
> @@ -13551,7 +13564,7 @@ static int intel_atomic_commit(struct drm_device *dev,
>  		}
>  
>  		if (!modeset)
> -			intel_pre_plane_update(intel_crtc);
> +			intel_pre_plane_update(to_intel_crtc_state(crtc_state));
>  
>  		if (crtc->state->active && intel_crtc->atomic.update_fbc)
>  			intel_fbc_enable(intel_crtc);
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index c9ae2be260d0..167f284ccb16 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -544,7 +544,6 @@ struct intel_mmio_flip {
>   */
>  struct intel_crtc_atomic_commit {
>  	/* Sleepable operations to perform before commit */
> -	bool pre_disable_primary;
>  
>  	/* Sleepable operations to perform after commit */
>  	unsigned fb_bits;
> -- 
> 2.1.0
> 
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-- 
Ville Syrjälä
Intel OTC
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