drm: apple: Use defines for dcp's fourcc formats

Add defines for Apple's full gamut packed 10-bit ARGB format ("l10r")
and 2 and 3 plane YCbCr 8-bit formats with 4:2:0, 4:2:2 and 4:4:4
subsampling in limited and full range.

Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

drivers/gpu/drm/apple/iomfb_plane.h

@@ -7,10 +7,20 @@
 #ifndef __APPLE_IOMFB_PLANE_H__
 #define __APPLE_IOMFB_PLANE_H__
 
+#include <drm/drm_fourcc.h>
+
 #include <linux/types.h>
 
 #define DCP_SURF_MAX_PLANES 3
 
+#define DCP_FORMAT_BGRA		fourcc_code('A', 'R', 'G', 'B')
+#define DCP_FORMAT_RGBA		fourcc_code('A', 'B', 'G', 'R')
+
+#define DCP_FORMAT_W30R		fourcc_code('r', '0', '3', 'w')	// wide gamut packed 10-bit RGB without alpha
+#define DCP_FORMAT_L10R		fourcc_code('r', '0', '1', 'l')	// full range packed 10-bit RGB with alpha
+
+
+
 struct dcp_rect {
 	u32 x;
 	u32 y;

drivers/gpu/drm/apple/plane.c

@@ -109,14 +109,14 @@ static u32 drm_format_to_dcp(u32 drm)
 	switch (drm) {
 	case DRM_FORMAT_XRGB8888:
 	case DRM_FORMAT_ARGB8888:
-		return fourcc_code('A', 'R', 'G', 'B');
+		return DCP_FORMAT_BGRA;
 
 	case DRM_FORMAT_XBGR8888:
 	case DRM_FORMAT_ABGR8888:
-		return fourcc_code('A', 'B', 'G', 'R');
+		return DCP_FORMAT_RGBA;
 
 	case DRM_FORMAT_XRGB2101010:
-		return fourcc_code('r', '0', '3', 'w');
+		return DCP_FORMAT_W30R;
 	}
 
 	pr_warn("DRM format %X not supported in DCP\n", drm);