drm: Add NV24 and NV42 pixel formats

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

drivers/gpu/drm/drm_crtc.c

@@ -2169,6 +2169,8 @@ static int format_check(const struct drm_mode_fb_cmd2 *r)
 	case DRM_FORMAT_NV21:
 	case DRM_FORMAT_NV16:
 	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
 	case DRM_FORMAT_YUV410:
 	case DRM_FORMAT_YVU410:
 	case DRM_FORMAT_YUV411:
@@ -3718,6 +3720,8 @@ int drm_format_num_planes(uint32_t format)
 	case DRM_FORMAT_NV21:
 	case DRM_FORMAT_NV16:
 	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
 		return 2;
 	default:
 		return 1;
@@ -3751,6 +3755,8 @@ int drm_format_plane_cpp(uint32_t format, int plane)
 	case DRM_FORMAT_NV21:
 	case DRM_FORMAT_NV16:
 	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
 		return plane ? 2 : 1;
 	case DRM_FORMAT_YUV410:
 	case DRM_FORMAT_YVU410:

include/drm/drm_fourcc.h

@@ -106,6 +106,8 @@
 #define DRM_FORMAT_NV21		fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
 #define DRM_FORMAT_NV16		fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
 #define DRM_FORMAT_NV61		fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
+#define DRM_FORMAT_NV24		fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV42		fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
 
 /* 2 non contiguous plane YCbCr */
 #define DRM_FORMAT_NV12M	fourcc_code('N', 'M', '1', '2') /* 2x2 subsampled Cr:Cb plane */