drm: add plane support v3

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.

v2: fix ABI of get_plane - move format_type_ptr to the end
v3: add 'flags' field for interlaced support (from Ville)

Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Reviewed-by: Rob Clark <rob.clark@linaro.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 42 insertions, 5 deletions

diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
index d30bedfeb7ef..44576a54dc3b 100644
--- a/include/drm/drm_mode.h
+++ b/include/drm/drm_mode.h
@@ -120,11 +120,48 @@ struct drm_mode_crtc {
         struct drm_mode_modeinfo mode;
 };
 
-#define DRM_MODE_ENCODER_NONE    0
-#define DRM_MODE_ENCODER_DAC     1
-#define DRM_MODE_ENCODER_TMDS    2
-#define DRM_MODE_ENCODER_LVDS    3
-#define DRM_MODE_ENCODER_TVDAC   4
+#define DRM_MODE_PRESENT_TOP_FIELD      (1<<0)
+#define DRM_MODE_PRESENT_BOTTOM_FIELD   (1<<1)
+
+/* 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 */
+        __u32 flags; /* see above flags */
+
+        /* Signed dest location allows it to be partially off screen */
+        __s32 crtc_x, crtc_y;
+        __u32 crtc_w, crtc_h;
+
+        /* Source values are 16.16 fixed point */
+        __u32 src_x, src_y;
+        __u32 src_h, src_w;
+};
+
+struct drm_mode_get_plane {
+        __u32 plane_id;
+
+        __u32 crtc_id;
+        __u32 fb_id;
+
+        __u32 possible_crtcs;
+        __u32 gamma_size;
+
+        __u32 count_format_types;
+        __u64 format_type_ptr;
+};
+
+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
+#define DRM_MODE_ENCODER_LVDS   3
+#define DRM_MODE_ENCODER_TVDAC  4
 #define DRM_MODE_ENCODER_VIRTUAL 5
 
 struct drm_mode_get_encoder {