[RFT/PATCH] media: rcar-vin: Add support for RAW10 on V3U

[Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>]

The R-Car V3U SoC is capable of capturing RAW10. Add support for it
using the V4L2_PIX_FMT_Y10 pixel format, which I think is the correct
format to express RAW10 unpacked to users.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---

Hi Renesas BSP team,

I don't have a RAW10 capable device, could you please test this patch
and provide a Tested-by tag?

Kind Regards
Niklas
---
 drivers/media/platform/renesas/rcar-vin/rcar-core.c |  1 +
 drivers/media/platform/renesas/rcar-vin/rcar-dma.c  | 12 ++++++++++++
 drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c |  8 ++++++++
 drivers/media/platform/renesas/rcar-vin/rcar-vin.h  |  2 ++
 4 files changed, 23 insertions(+)

diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-core.c b/drivers/media/platform/renesas/rcar-vin/rcar-core.c
index 5e53d6b7036c..061e83578d5d 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-core.c
@@ -1299,6 +1299,7 @@ static const struct rvin_info rcar_info_r8a779a0 = {
 	.use_mc = true,
 	.use_isp = true,
 	.nv12 = true,
+	.raw10 = true,
 	.max_width = 4096,
 	.max_height = 4096,
 };
diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
index 2a77353f10b5..4935dbecc68d 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
@@ -123,7 +123,9 @@
 /* Video n Data Mode Register bits */
 #define VNDMR_A8BIT(n)		(((n) & 0xff) << 24)
 #define VNDMR_A8BIT_MASK	(0xff << 24)
+#define VNDMR_RMODE_RAW10	(2 << 19)
 #define VNDMR_YMODE_Y8		(1 << 12)
+#define VNDMR_YC_THR		(1 << 11)
 #define VNDMR_EXRGB		(1 << 8)
 #define VNDMR_BPSM		(1 << 4)
 #define VNDMR_ABIT		(1 << 2)
@@ -780,6 +782,9 @@ static int rvin_setup(struct rvin_dev *vin)
 	case MEDIA_BUS_FMT_Y8_1X8:
 		vnmc |= VNMC_INF_RAW8;
 		break;
+	case MEDIA_BUS_FMT_Y10_1X10:
+		vnmc |= VNMC_INF_RGB666;
+		break;
 	default:
 		break;
 	}
@@ -888,6 +893,9 @@ static int rvin_setup(struct rvin_dev *vin)
 			dmr = 0;
 		}
 		break;
+	case V4L2_PIX_FMT_Y10:
+		dmr = VNDMR_RMODE_RAW10 | VNDMR_YC_THR;
+		break;
 	default:
 		vin_err(vin, "Invalid pixelformat (0x%x)\n",
 			vin->format.pixelformat);
@@ -1270,6 +1278,10 @@ static int rvin_mc_validate_format(struct rvin_dev *vin, struct v4l2_subdev *sd,
 		if (vin->format.pixelformat != V4L2_PIX_FMT_GREY)
 			return -EPIPE;
 		break;
+	case MEDIA_BUS_FMT_Y10_1X10:
+		if (vin->format.pixelformat != V4L2_PIX_FMT_Y10)
+			return -EPIPE;
+		break;
 	default:
 		return -EPIPE;
 	}
diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c b/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c
index 073f70c6ac68..c9be192cb4e5 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c
@@ -86,6 +86,10 @@ static const struct rvin_video_format rvin_formats[] = {
 		.fourcc			= V4L2_PIX_FMT_GREY,
 		.bpp			= 1,
 	},
+	{
+		.fourcc			= V4L2_PIX_FMT_Y10,
+		.bpp			= 4,
+	},
 };
 
 const struct rvin_video_format *rvin_format_from_pixel(struct rvin_dev *vin,
@@ -106,6 +110,10 @@ const struct rvin_video_format *rvin_format_from_pixel(struct rvin_dev *vin,
 		if (!vin->info->nv12 || !(BIT(vin->id) & 0x3333))
 			return NULL;
 		break;
+	case V4L2_PIX_FMT_Y10:
+		if (!vin->info->raw10)
+			return NULL;
+		break;
 	default:
 		break;
 	}
diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-vin.h b/drivers/media/platform/renesas/rcar-vin/rcar-vin.h
index cb206d3976dd..921e35d9dfe0 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-vin.h
@@ -152,6 +152,7 @@ struct rvin_group_route {
  * @use_mc:		use media controller instead of controlling subdevice
  * @use_isp:		the VIN is connected to the ISP and not to the CSI-2
  * @nv12:		support outputing NV12 pixel format
+ * @raw10:		support outputing RAW10 pixel format
  * @max_width:		max input width the VIN supports
  * @max_height:		max input height the VIN supports
  * @routes:		list of possible routes from the CSI-2 recivers to
@@ -163,6 +164,7 @@ struct rvin_info {
 	bool use_mc;
 	bool use_isp;
 	bool nv12;
+	bool raw10;
 
 	unsigned int max_width;
 	unsigned int max_height;
-- 
2.39.1