From ef305037fd7423386d3a59b640114bdff67d824f Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Wed, 6 May 2020 18:11:14 +0100
Subject: [PATCH] staging: vc04_services: isp: Add monochrome image
 formats

Adds support for monochrome image formats in the various
MIPI packings.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 .../bcm2835-isp/bcm2835_isp_fmts.h            | 52 ++++++++++++++++++-
 .../vc04_services/vchiq-mmal/mmal-encodings.h |  7 +++
 2 files changed, 58 insertions(+), 1 deletion(-)

--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835_isp_fmts.h
+++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835_isp_fmts.h
@@ -328,7 +328,57 @@ static const struct bcm2835_isp_fmt supp
 		.colorspace	    = V4L2_COLORSPACE_RAW,
 		.step_size	    = 2,
 	}, {
-		/* ISP statistics format */
+		/* Monochrome MIPI formats */
+		/* 8 bit */
+		.fourcc		    = V4L2_PIX_FMT_GREY,
+		.depth		    = 8,
+		.bytesperline_align = 32,
+		.flags		    = 0,
+		.mmal_fmt	    = MMAL_ENCODING_GREY,
+		.size_multiplier_x2 = 2,
+		.colorspace	    = V4L2_COLORSPACE_RAW,
+		.step_size	    = 2,
+	}, {
+		/* 10 bit */
+		.fourcc		    = V4L2_PIX_FMT_Y10P,
+		.depth		    = 10,
+		.bytesperline_align = 32,
+		.flags		    = 0,
+		.mmal_fmt	    = MMAL_ENCODING_Y10P,
+		.size_multiplier_x2 = 2,
+		.colorspace	    = V4L2_COLORSPACE_RAW,
+		.step_size	    = 2,
+	}, {
+		/* 12 bit */
+		.fourcc		    = V4L2_PIX_FMT_Y12P,
+		.depth		    = 12,
+		.bytesperline_align = 32,
+		.flags		    = 0,
+		.mmal_fmt	    = MMAL_ENCODING_Y12P,
+		.size_multiplier_x2 = 2,
+		.colorspace	    = V4L2_COLORSPACE_RAW,
+		.step_size	    = 2,
+	}, {
+		/* 14 bit */
+		.fourcc		    = V4L2_PIX_FMT_Y14P,
+		.depth		    = 14,
+		.bytesperline_align = 32,
+		.flags		    = 0,
+		.mmal_fmt	    = MMAL_ENCODING_Y14P,
+		.size_multiplier_x2 = 2,
+		.colorspace	    = V4L2_COLORSPACE_RAW,
+		.step_size	    = 2,
+	}, {
+		/* 16 bit */
+		.fourcc		    = V4L2_PIX_FMT_Y16,
+		.depth		    = 16,
+		.bytesperline_align = 32,
+		.flags		    = 0,
+		.mmal_fmt	    = MMAL_ENCODING_Y16,
+		.size_multiplier_x2 = 2,
+		.colorspace	    = V4L2_COLORSPACE_RAW,
+		.step_size	    = 2,
+	}, {
 		.fourcc		    = V4L2_META_FMT_BCM2835_ISP_STATS,
 		.mmal_fmt	    = MMAL_ENCODING_BRCM_STATS,
 		/* The rest are not valid fields for stats. */
--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
@@ -102,6 +102,13 @@
 #define MMAL_ENCODING_BAYER_SGRBG16    MMAL_FOURCC('G', 'R', '1', '6')
 #define MMAL_ENCODING_BAYER_SRGGB16    MMAL_FOURCC('R', 'G', '1', '6')
 
+/* MIPI packed monochrome images */
+#define MMAL_ENCODING_GREY    MMAL_FOURCC('G', 'R', 'E', 'Y')
+#define MMAL_ENCODING_Y10P    MMAL_FOURCC('Y', '1', '0', 'P')
+#define MMAL_ENCODING_Y12P    MMAL_FOURCC('Y', '1', '2', 'P')
+#define MMAL_ENCODING_Y14P    MMAL_FOURCC('Y', '1', '4', 'P')
+#define MMAL_ENCODING_Y16     MMAL_FOURCC('Y', '1', '6', ' ')
+
 /** An EGL image handle
  */
 #define MMAL_ENCODING_EGL_IMAGE        MMAL_FOURCC('E', 'G', 'L', 'I')