Hi,
simple questions :)
2011/6/21 Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>:
> 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@xxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_crtc.c | 235 +++++++++++++++++++++++++++++++++++++++++++-
> drivers/gpu/drm/drm_drv.c | 3 +
> include/drm/drm.h | 3 +
> include/drm/drm_crtc.h | 73 ++++++++++++++-
> include/drm/drm_mode.h | 35 +++++++
> 5 files changed, 346 insertions(+), 3 deletions(-)
>
snip
> diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
> index c4961ea..fa6d348 100644
> --- a/include/drm/drm_mode.h
> +++ b/include/drm/drm_mode.h
> @@ -120,6 +120,41 @@ struct drm_mode_crtc {
> struct drm_mode_modeinfo mode;
> };
>
> +/* Planes blend with or override other bits on the CRTC */
> +struct drm_mode_set_plane {
> + __u32 plane_id;
> + __u32 crtc_id;
> + __u32 fb_id; /* fb object contains surface format type */
> +
> + /* Signed dest location allows it to be partially off screen */
> + __s32 crtc_x, crtc_y;
Is this location offset from base(0, 0) of fb for plane, or from base
of crtc(mode)?
> + __u32 crtc_w, crtc_h;
What is it for? size of plane?
> +
> + /* Source values are 16.16 fixed point */
> + __u32 src_x, src_y;
> + __u32 src_h, src_w;
What are these for?
> +
> + __u32 zpos;
Is this for order of plane(overlay)?
> +};
> +
> +struct drm_mode_get_plane {
> + __u64 format_type_ptr;
> + __u32 plane_id;
> +
> + __u32 crtc_id;
> + __u32 fb_id;
> +
> + __u32 possible_crtcs;
> + __u32 gamma_size;
> +
> + __u32 count_format_types;
> +};
> +
> +struct drm_mode_get_plane_res {
> + __u64 plane_id_ptr;
> + __u32 count_planes;
> +};
> +
> #define DRM_MODE_ENCODER_NONE 0
> #define DRM_MODE_ENCODER_DAC 1
> #define DRM_MODE_ENCODER_TMDS 2
> --
> 1.7.4.1
>
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>
--
- Joonyoung Shim
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