Re: [PATCH 3/7] drm/i915: Fix fbdev sprite disable code

[Daniel Vetter <daniel@ffwll.ch>]

On Wed, May 08, 2013 at 12:55:18PM +0300, ville.syrjala@linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> plane->enabled is never set, so this code didn't do anything.
> 
> If we end up doing a full modeset, sprites already get disabled. However
> if we end up doing a simple set_base, we still need to turn off the sprites
> manually.
> 
> And do the same for cursors, since we only want to see the primary plane
> for fbdev.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 14 ++++++++++++++
>  drivers/gpu/drm/i915/intel_drv.h     |  1 +
>  drivers/gpu/drm/i915/intel_fb.c      |  8 ++------
>  3 files changed, 17 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index cfe2803..cef0bff 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -9928,3 +9928,17 @@ intel_display_print_error_state(struct seq_file *m,
>  	}
>  }
>  #endif
> +
> +void intel_disable_cursors_and_sprites(struct drm_device *dev)
> +{
> +	struct drm_crtc *crtc;
> +	struct drm_plane *plane;
> +
> +	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
> +		intel_crtc_dpms_overlay(to_intel_crtc(crtc), false);
> +		intel_crtc_update_cursor(crtc, false);
> +	}
> +
> +	list_for_each_entry(plane, &dev->mode_config.plane_list, head)
> +		intel_plane_disable(plane);
> +}
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index cd1297e..a4e866a 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -789,5 +789,6 @@ extern bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
>  extern bool intel_set_pch_fifo_underrun_reporting(struct drm_device *dev,
>  						 enum transcoder pch_transcoder,
>  						 bool enable);
> +extern void intel_disable_cursors_and_sprites(struct drm_device *dev);
>  
>  #endif /* __INTEL_DRV_H__ */
> diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
> index a04481f..57a082c 100644
> --- a/drivers/gpu/drm/i915/intel_fb.c
> +++ b/drivers/gpu/drm/i915/intel_fb.c
> @@ -281,8 +281,6 @@ void intel_fb_restore_mode(struct drm_device *dev)
>  {
>  	int ret;
>  	drm_i915_private_t *dev_priv = dev->dev_private;
> -	struct drm_mode_config *config = &dev->mode_config;
> -	struct drm_plane *plane;
>  
>  	if (INTEL_INFO(dev)->num_pipes == 0)
>  		return;
> @@ -293,10 +291,8 @@ void intel_fb_restore_mode(struct drm_device *dev)
>  	if (ret)
>  		DRM_DEBUG("failed to restore crtc mode\n");
>  
> -	/* Be sure to shut off any planes that may be active */
> -	list_for_each_entry(plane, &config->plane_list, head)
> -		if (plane->enabled)
> -			plane->funcs->disable_plane(plane);
> +	/* in case we ended up doing just set_base above */
> +	intel_disable_cursors_and_sprites(dev);

Since I did not merge patch 2 I've killed this comment here.
-Daniel
>  
>  	drm_modeset_unlock_all(dev);
>  }
> -- 
> 1.8.1.5
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch