openwrt/target/linux/brcm2708/patches-4.19/950-0731-media-bcm2835-unicam-Add-support-for-luma-greyscale-.patch

From 253dd469e6403b6c2afd25d4f8338a0c1588583f Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Thu, 3 Oct 2019 13:45:51 +0100
Subject: [PATCH] media: bcm2835-unicam: Add support for luma/greyscale
 formats

Add support for V4L2_PIX_FMT_GREY, V4L2_PIX_FMT_Y10P,
V4L2_PIX_FMT_Y10, and V4L2_PIX_FMT_Y12 image formats from the
appropriate mediabus formats advertised by sensors.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
 .../media/platform/bcm2835/bcm2835-unicam.c   | 21 ++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
+++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
@@ -307,12 +307,31 @@ static const struct unicam_fmt formats[]
 		.code		= MEDIA_BUS_FMT_SRGGB14_1X14,
 		.depth		= 14,
 		.csi_dt		= 0x2d,
-	},
+	}, {
 	/*
 	 * 16 bit Bayer formats could be supported, but there is no CSI2
 	 * data_type defined for raw 16, and no sensors that produce it at
 	 * present.
 	 */
+
+	/* Greyscale formats */
+		.fourcc		= V4L2_PIX_FMT_GREY,
+		.code		= MEDIA_BUS_FMT_Y8_1X8,
+		.depth		= 8,
+		.csi_dt		= 0x2a,
+	}, {
+		.fourcc		= V4L2_PIX_FMT_Y10P,
+		.repacked_fourcc = V4L2_PIX_FMT_Y10,
+		.code		= MEDIA_BUS_FMT_Y10_1X10,
+		.depth		= 10,
+		.csi_dt		= 0x2b,
+	}, {
+		/* NB There is no packed V4L2 fourcc for this format. */
+		.repacked_fourcc = V4L2_PIX_FMT_Y12,
+		.code		= MEDIA_BUS_FMT_Y12_1X12,
+		.depth		= 12,
+		.csi_dt		= 0x2c,
+	},
 };
 
 struct unicam_dmaqueue {