From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Date: Fri, 24 Sep 2021 12:43:17 +0000 (+0200)
Subject: media: rcar-vin: add GREY format
X-Git-Tag: v6.6.17~8751^2~88
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c93beb5243750911a9a95aac31688ff85512b22e;p=platform%2Fkernel%2Flinux-rpi.git

media: rcar-vin: add GREY format

This adds support for MEDIA_BUS_FMT_Y8_1X8 input and V4L2_PIX_FMT_GREY
output format.

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---

diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
index e5162bf..25ead93 100644
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -114,6 +114,7 @@
 /* Video n Data Mode Register bits */
 #define VNDMR_A8BIT(n)		(((n) & 0xff) << 24)
 #define VNDMR_A8BIT_MASK	(0xff << 24)
+#define VNDMR_YMODE_Y8		(1 << 12)
 #define VNDMR_EXRGB		(1 << 8)
 #define VNDMR_BPSM		(1 << 4)
 #define VNDMR_ABIT		(1 << 2)
@@ -603,6 +604,7 @@ void rvin_crop_scale_comp(struct rvin_dev *vin)
 	case V4L2_PIX_FMT_SGBRG8:
 	case V4L2_PIX_FMT_SGRBG8:
 	case V4L2_PIX_FMT_SRGGB8:
+	case V4L2_PIX_FMT_GREY:
 		stride /= 2;
 		break;
 	default:
@@ -695,6 +697,7 @@ static int rvin_setup(struct rvin_dev *vin)
 	case MEDIA_BUS_FMT_SGBRG8_1X8:
 	case MEDIA_BUS_FMT_SGRBG8_1X8:
 	case MEDIA_BUS_FMT_SRGGB8_1X8:
+	case MEDIA_BUS_FMT_Y8_1X8:
 		vnmc |= VNMC_INF_RAW8;
 		break;
 	default:
@@ -774,6 +777,14 @@ static int rvin_setup(struct rvin_dev *vin)
 	case V4L2_PIX_FMT_SRGGB8:
 		dmr = 0;
 		break;
+	case V4L2_PIX_FMT_GREY:
+		if (input_is_yuv) {
+			dmr = VNDMR_DTMD_YCSEP | VNDMR_YMODE_Y8;
+			output_is_yuv = true;
+		} else {
+			dmr = 0;
+		}
+		break;
 	default:
 		vin_err(vin, "Invalid pixelformat (0x%x)\n",
 			vin->format.pixelformat);
@@ -1148,6 +1159,10 @@ static int rvin_mc_validate_format(struct rvin_dev *vin, struct v4l2_subdev *sd,
 		if (vin->format.pixelformat != V4L2_PIX_FMT_SRGGB8)
 			return -EPIPE;
 		break;
+	case MEDIA_BUS_FMT_Y8_1X8:
+		if (vin->format.pixelformat != V4L2_PIX_FMT_GREY)
+			return -EPIPE;
+		break;
 	default:
 		return -EPIPE;
 	}
diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index 0d14115..bdeff51 100644
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -82,6 +82,10 @@ static const struct rvin_video_format rvin_formats[] = {
 		.fourcc			= V4L2_PIX_FMT_SRGGB8,
 		.bpp			= 1,
 	},
+	{
+		.fourcc			= V4L2_PIX_FMT_GREY,
+		.bpp			= 1,
+	},
 };
 
 const struct rvin_video_format *rvin_format_from_pixel(struct rvin_dev *vin,