drm/vkms: Add P01* formats

The formats NV 12/16/24/21/61/42 were already supported.
Add support for:
- P010
- P012
- P016

Reviewed-by: Maíra Canal <mcanal@igalia.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Link: https://lore.kernel.org/r/20250703-b4-new-color-formats-v7-8-15fd8fd2e15c@bootlin.com
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>

Author: Fomys

drivers/gpu/drm/vkms/vkms_formats.c

@@ -528,7 +528,8 @@ static void function_name(const struct vkms_plane_state *plane, int x_start,			\
 
 READ_LINE_YUV_SEMIPLANAR(YUV888_semiplanar_read_line, y, uv, u8, u8, argb_u16_from_yuv161616,
 			 y[0] * 257, uv[0] * 257, uv[1] * 257)
-
+READ_LINE_YUV_SEMIPLANAR(YUV161616_semiplanar_read_line, y, uv, u16, u16, argb_u16_from_yuv161616,
+			 y[0], uv[0], uv[1])
 /*
  * This callback can be used for YUV format where each color component is
  * stored in a different plane (often called planar formats). It will
@@ -725,6 +726,10 @@ pixel_read_line_t get_pixel_read_line_function(u32 format)
 	case DRM_FORMAT_NV61:
 	case DRM_FORMAT_NV42:
 		return &YUV888_semiplanar_read_line;
+	case DRM_FORMAT_P010:
+	case DRM_FORMAT_P012:
+	case DRM_FORMAT_P016:
+		return &YUV161616_semiplanar_read_line;
 	case DRM_FORMAT_YUV420:
 	case DRM_FORMAT_YUV422:
 	case DRM_FORMAT_YUV444:

drivers/gpu/drm/vkms/vkms_plane.c

@@ -39,6 +39,9 @@ static const u32 vkms_formats[] = {
 	DRM_FORMAT_YVU420,
 	DRM_FORMAT_YVU422,
 	DRM_FORMAT_YVU444,
+	DRM_FORMAT_P010,
+	DRM_FORMAT_P012,
+	DRM_FORMAT_P016,
 	DRM_FORMAT_R1,
 	DRM_FORMAT_R2,
 	DRM_FORMAT_R4,