Re: [PATCH 2/6] drm/i915: get_plane_config for i9xx v10

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On Fri, Feb 07, 2014 at 12:10:36PM -0800, Jesse Barnes wrote:
> Read out the current plane configuration at init time into a new
> plane_config structure.  This allows us to track any existing
> framebuffers attached to the plane and potentially re-use them in our
> fbdev code for a smooth handoff.
> 
> v2: update for new pitch_for_width function (Jesse)
>     comment how get_plane_config works with shared fbs (Jesse)
> v3: s/ARGB/XRGB (Ville)
>     use pipesrc width/height (Ville)
>     fix fourcc comment (Bob)
>     use drm_format_plane_cpp (Ville)
> v4: use fb for tracking fb data object (Ville)
> v5: fix up gen2 pitch limits (Ville)
> v6: read out stride as well (Daniel)
> v7: split out init ordering changes (Daniel)
>     don't fetch config if !CONFIG_FB
> v8: use proper height in get_plane_config (Chris)
> v9: fix CONFIG_FB check for modular configs (Jani)
> v10: add comment about stolen allocation stomping
> 
> Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
> ---

[snip]

> @@ -11062,6 +11176,32 @@ void intel_modeset_init(struct drm_device *dev)
>  
>  	/* Just in case the BIOS is doing something questionable. */
>  	intel_disable_fbc(dev);
> +
> +	drm_modeset_lock_all(dev);
> +	drm_mode_config_reset(dev);
> +	intel_modeset_setup_hw_state(dev, false);
> +	drm_modeset_unlock_all(dev);

This smells like rebase fail - the hunk from older patches where you drop
this code seems to have been lost. Also I've originally asked you to split
this out with a bit of justification why we need this at a different place
for the fb reconstruction. I just like to give this a spent independent of
the other bits a bit, since the setup sequence is known to be really
brittle.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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