[PATCH] drm/fourcc: Add P212, P410 and P412 formats

Add P212, P410 and P412 formats, including their FourCC codes and
drm_format_info entries.

  - P212 is a two-plane, 12-bit, 4:2:2 YCbCr format
  - P410 is a two-plane, 10-bit, 4:4:4 YCbCr format
  - P412 is a two-plane, 12-bit, 4:4:4 YCbCr format

Assisted-by: Cursor:GPT-5.5
Signed-off-by: Jonah Walker <[email protected]>
---
 drivers/gpu/drm/drm_fourcc.c  | 12 ++++++++++++
 include/uapi/drm/drm_fourcc.h | 21 +++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index 60cd02b7e..31558a212 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -324,6 +324,18 @@ const struct drm_format_info *__drm_format_info(u32 format)
 		  .num_planes = 2, .char_per_block = { 2, 4, 0 },
 		  .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
 		  .vsub = 1, .is_yuv = true },
+		{ .format = DRM_FORMAT_P212,		.depth = 0,
+		  .num_planes = 2, .char_per_block = { 2, 4, 0 },
+		  .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
+		  .vsub = 1, .is_yuv = true },
+		{ .format = DRM_FORMAT_P410,		.depth = 0,
+		  .num_planes = 2, .char_per_block = { 2, 4, 0 },
+		  .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 1,
+		  .vsub = 1, .is_yuv = true },
+		{ .format = DRM_FORMAT_P412,		.depth = 0,
+		  .num_planes = 2, .char_per_block = { 2, 4, 0 },
+		  .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 1,
+		  .vsub = 1, .is_yuv = true },
 		{ .format = DRM_FORMAT_VUY101010,	.depth = 0,
 		  .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1,
 		  .is_yuv = true },
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 3a4d4dc63..d4a6463d2 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -334,6 +334,27 @@ extern "C" {
  */
 #define DRM_FORMAT_P210		fourcc_code('P', '2', '1', '0') /* 2x1 subsampled Cr:Cb plane, 10 bit per channel */
 
+/*
+ * 2 plane YCbCr MSB aligned
+ * index 0 = Y plane, [15:0] Y:x [12:4] little endian
+ * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [12:4:12:4] little endian
+ */
+#define DRM_FORMAT_P212		fourcc_code('P', '2', '1', '2') /* 2x1 subsampled Cr:Cb plane 12 bits per channel */
+
+/*
+ * 2 plane YCbCr MSB aligned
+ * index 0 = Y plane, [15:0] Y:x [10:6] little endian
+ * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [10:6:10:6] little endian
+ */
+#define DRM_FORMAT_P410		fourcc_code('P', '4', '1', '0') /* non-subsampled Cr:Cb plane 10 bits per channel */
+
+/*
+ * 2 plane YCbCr MSB aligned
+ * index 0 = Y plane, [15:0] Y:x [12:4] little endian
+ * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [12:4:12:4] little endian
+ */
+#define DRM_FORMAT_P412		fourcc_code('P', '4', '1', '2') /* non-subsampled Cr:Cb plane 12 bits per channel */
+
 /*
  * 2 plane YCbCr MSB aligned
  * index 0 = Y plane, [15:0] Y:x [10:6] little endian

base-commit: cff96362794a5c1f3adb013b4a46c7233149a629
-- 
2.43.0