[RFC PATCH 2/8] media: v4l: Add 10-bit RGBIr formats

[Rishikesh Donadkar]

From: Jai Luthra <j-luthra at ti.com>

Some camera sensors now use an expanded CFA pattern to capture near-IR
light along with the visible spectrum (R,G,B). This allows capturing
light in both low-light and day-light scenarios using the same sensor.

Instead of having a 2x2 repetition of B,G,R like in older bayer formats,
here we have a 4x4 repetition of B,G,R,Ir where the number of G pixels
are the same, but half the B and R pixels are replaced with Ir. Thus
instead of having 4 total phases, we now have 8 total phases or
re-arrangements of this pattern.

Co-developed-by: Rahul T R <r-ravikumar at ti.com>
Signed-off-by: Rahul T R <r-ravikumar at ti.com>
Signed-off-by: Jai Luthra <j-luthra at ti.com>
Co-developed-by: Rishikesh Donadkar <r-donadkar at ti.com>
Signed-off-by: Rishikesh Donadkar <r-donadkar at ti.com>
---
 drivers/media/v4l2-core/v4l2-ioctl.c  |  8 ++++++++
 include/uapi/linux/media-bus-format.h | 10 +++++++++-
 include/uapi/linux/videodev2.h        |  9 +++++++++
 3 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 17ba1ae70735..97ce6e1a6781 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1435,6 +1435,14 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 	case V4L2_PIX_FMT_SGRBG16:	descr = "16-bit Bayer GRGR/BGBG"; break;
 	case V4L2_PIX_FMT_SRGGB16:	descr = "16-bit Bayer RGRG/GBGB"; break;
 	case V4L2_PIX_FMT_RAW_CRU20:	descr = "14-bit Raw CRU Packed"; break;
+	case V4L2_PIX_FMT_SRGGI10:	descr = "10-bit Bayer RGBG/GIrGIr"; break;
+	case V4L2_PIX_FMT_SGRIG10:	descr = "10-bit Bayer GRGB/IrGIrG"; break;
+	case V4L2_PIX_FMT_SBGGI10:	descr = "10-bit Bayer BGRG/GIrGIr"; break;
+	case V4L2_PIX_FMT_SGBIG10:	descr = "10-bit Bayer GBGR/IrGIrG"; break;
+	case V4L2_PIX_FMT_SGIRG10:	descr = "10-bit Bayer GIrGIr/RGBG"; break;
+	case V4L2_PIX_FMT_SIGGR10:	descr = "10-bit Bayer IrGIrG/GRGB"; break;
+	case V4L2_PIX_FMT_SGIBG10:	descr = "10-bit Bayer GIrGIr/BGRG"; break;
+	case V4L2_PIX_FMT_SIGGB10:	descr = "10-bit Bayer IrGIrG/GBGR"; break;
 	case V4L2_PIX_FMT_SN9C20X_I420:	descr = "GSPCA SN9C20X I420"; break;
 	case V4L2_PIX_FMT_SPCA501:	descr = "GSPCA SPCA501"; break;
 	case V4L2_PIX_FMT_SPCA505:	descr = "GSPCA SPCA505"; break;
diff --git a/include/uapi/linux/media-bus-format.h b/include/uapi/linux/media-bus-format.h
index 6005f033e62c..c50042300a98 100644
--- a/include/uapi/linux/media-bus-format.h
+++ b/include/uapi/linux/media-bus-format.h
@@ -124,7 +124,7 @@
 #define MEDIA_BUS_FMT_YUV16_1X48		0x202a
 #define MEDIA_BUS_FMT_UYYVYY16_0_5X48		0x202b
 
-/* Bayer - next is	0x3025 */
+/* Bayer - next is	0x3029 */
 #define MEDIA_BUS_FMT_SBGGR8_1X8		0x3001
 #define MEDIA_BUS_FMT_SGBRG8_1X8		0x3013
 #define MEDIA_BUS_FMT_SGRBG8_1X8		0x3002
@@ -161,6 +161,14 @@
 #define MEDIA_BUS_FMT_SGBRG20_1X20		0x3022
 #define MEDIA_BUS_FMT_SGRBG20_1X20		0x3023
 #define MEDIA_BUS_FMT_SRGGB20_1X20		0x3024
+#define MEDIA_BUS_FMT_SRGGI10_1X10		0x3021
+#define MEDIA_BUS_FMT_SGRIG10_1X10		0x3022
+#define MEDIA_BUS_FMT_SBGGI10_1X10		0x3023
+#define MEDIA_BUS_FMT_SGBIG10_1X10		0x3024
+#define MEDIA_BUS_FMT_SGIRG10_1X10		0x3025
+#define MEDIA_BUS_FMT_SIGGR10_1X10		0x3026
+#define MEDIA_BUS_FMT_SGIBG10_1X10		0x3027
+#define MEDIA_BUS_FMT_SIGGB10_1X10		0x3028
 
 /* JPEG compressed formats - next is	0x4002 */
 #define MEDIA_BUS_FMT_JPEG_1X8			0x4001
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 5373dba640fa..c56af0826f59 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -744,6 +744,15 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_SGBRG16 v4l2_fourcc('G', 'B', '1', '6') /* 16  GBGB.. RGRG.. */
 #define V4L2_PIX_FMT_SGRBG16 v4l2_fourcc('G', 'R', '1', '6') /* 16  GRGR.. BGBG.. */
 #define V4L2_PIX_FMT_SRGGB16 v4l2_fourcc('R', 'G', '1', '6') /* 16  RGRG.. GBGB.. */
+	/* 10bit raw bayer with IR (4x4) */
+#define V4L2_PIX_FMT_SRGGI10 v4l2_fourcc('R', 'G', 'I', '0') /* 10 RGBG.. GIrGIr.. */
+#define V4L2_PIX_FMT_SGRIG10 v4l2_fourcc('G', 'R', 'I', '0') /* 10 GRGB.. IrGIrG.. */
+#define V4L2_PIX_FMT_SBGGI10 v4l2_fourcc('B', 'G', 'I', '0') /* 10 BGRG.. GIrGIr.. */
+#define V4L2_PIX_FMT_SGBIG10 v4l2_fourcc('G', 'B', 'I', '0') /* 10 GBGR.. IrGIrG.. */
+#define V4L2_PIX_FMT_SGIRG10 v4l2_fourcc('G', 'I', 'R', '0') /* 10 GIrGIr.. RGBG.. */
+#define V4L2_PIX_FMT_SIGGR10 v4l2_fourcc('I', 'G', 'R', '0') /* 10 IrGIrG.. GRGB.. */
+#define V4L2_PIX_FMT_SGIBG10 v4l2_fourcc('G', 'I', 'B', '0') /* 10 GIrGIr.. BGRG.. */
+#define V4L2_PIX_FMT_SIGGB10 v4l2_fourcc('I', 'G', 'B', '0') /* 10 IrGIrG.. GBGR.. */
 
 /* HSV formats */
 #define V4L2_PIX_FMT_HSV24 v4l2_fourcc('H', 'S', 'V', '3')
-- 
2.34.1