[Intel-gfx] [PATCH 1/5] drm: add plane support

[Jesse Barnes]

On Tue, 8 Nov 2011 15:20:37 +0100
Daniel Vetter <daniel at ffwll.ch> wrote:

> On Mon, Nov 07, 2011 at 10:02:52AM -0800, Jesse Barnes wrote:
> > Planes are a bit like half-CRTCs.  They have a location and fb, but
> > don't drive outputs directly.  Add support for handling them to the core
> > KMS code.
> > 
> > Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
> 
> One question belowk, but still:
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> 
> >  /**
> > + * drm_plane_funcs - driver plane control functions
> > + * @update_plane: update the plane configuration
> > + * @disable_plane: shut down the plane
> > + * @destroy: clean up plane resources
> > + */
> > +struct drm_plane_funcs {
> > +	int (*update_plane)(struct drm_plane *plane,
> > +			    struct drm_crtc *crtc, struct drm_framebuffer *fb,
> > +			    int crtc_x, int crtc_y,
> > +			    unsigned int crtc_w, unsigned int crtc_h,
> > +			    uint32_t src_x, uint32_t src_y,
> > +			    uint32_t src_w, uint32_t src_h);
> > +	int (*disable_plane)(struct drm_plane *plane);
> > +	void (*destroy)(struct drm_plane *plane);
> > +};
> > +
> > +/**
> > + * drm_plane - central DRM plane control structure
> > + * @dev: DRM device this plane belongs to
> > + * @kdev: kernel device
> > + * @attr: kdev attributes
> > + * @head: for list management
> > + * @base: base mode object
> > + * @possible_crtcs: pipes this plane can be bound to
> > + * @format_types: array of formats supported by this plane
> > + * @format_count: number of formats supported
> > + * @crtc: currently bound CRTC
> > + * @fb: currently bound fb
> > + * @gamma_size: size of gamma table
> > + * @gamma_store: gamma correction table
> > + * @enabled: enabled flag
> > + * @funcs: helper functions
> > + * @helper_private: storage for drver layer
> > + */
> > +struct drm_plane {
> > +	struct drm_device *dev;
> > +	struct device kdev;
> > +	struct device_attribute *attr;
> 
> What are these two for?

Oh I can drop those.  I had plans to expose some sysfs stuff, but I
don't think I'll bother.  Thanks.

-- 
Jesse Barnes, Intel Open Source Technology Center
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