linux-kernel - [PATCH 3/4] media/vivid: Add support for Y16

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Message-Id: <1430726852-11715-4-git-send-email-ricardo.ribalda@gmail.com>
Date:	Mon,  4 May 2015 10:07:31 +0200
From:	Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
To:	Hans Verkuil <hverkuil@...all.nl>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Ramakrishnan Muthukrishnan <ramakrmu@...co.com>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-api@...r.kernel.org
Cc:	Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
Subject: [PATCH 3/4] media/vivid: Add support for Y16_BE format

Support for V4L2_PIX_FMT_Y16_BE, a 16 bit big endian greyscale format.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
---
 drivers/media/platform/vivid/vivid-tpg.c        | 9 ++++++++-
 drivers/media/platform/vivid/vivid-vid-common.c | 8 ++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/vivid/vivid-tpg.c b/drivers/media/platform/vivid/vivid-tpg.c
index 9e50303a19c5..2e5129a6bc2f 100644
--- a/drivers/media/platform/vivid/vivid-tpg.c
+++ b/drivers/media/platform/vivid/vivid-tpg.c
@@ -221,6 +221,7 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
 	case V4L2_PIX_FMT_ABGR32:
 	case V4L2_PIX_FMT_GREY:
 	case V4L2_PIX_FMT_Y16:
+	case V4L2_PIX_FMT_Y16_BE:
 		tpg->is_yuv = false;
 		break;
 	case V4L2_PIX_FMT_YUV444:
@@ -315,6 +316,7 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
 	case V4L2_PIX_FMT_YUV555:
 	case V4L2_PIX_FMT_YUV565:
 	case V4L2_PIX_FMT_Y16:
+	case V4L2_PIX_FMT_Y16_BE:
 		tpg->twopixelsize[0] = 2 * 2;
 		break;
 	case V4L2_PIX_FMT_RGB24:
@@ -715,7 +717,8 @@ static void precalculate_color(struct tpg_data *tpg, int k)
 		b <<= 4;
 	}
 	if (tpg->qual == TPG_QUAL_GRAY || tpg->fourcc == V4L2_PIX_FMT_GREY ||
-	    tpg->fourcc == V4L2_PIX_FMT_Y16) {
+	    tpg->fourcc == V4L2_PIX_FMT_Y16 ||
+	    tpg->fourcc == V4L2_PIX_FMT_Y16_BE) {
 		/* Rec. 709 Luma function */
 		/* (0.2126, 0.7152, 0.0722) * (255 * 256) */
 		r = g = b = (13879 * r + 46688 * g + 4713 * b) >> 16;
@@ -902,6 +905,10 @@ static void gen_twopix(struct tpg_data *tpg,
 		buf[0][offset] = 0;
 		buf[0][offset+1] = r_y;
 		break;
+	case V4L2_PIX_FMT_Y16_BE:
+		buf[0][offset] = r_y;
+		buf[0][offset+1] = 0;
+		break;
 	case V4L2_PIX_FMT_YUV422P:
 	case V4L2_PIX_FMT_YUV420:
 	case V4L2_PIX_FMT_YUV420M:
diff --git a/drivers/media/platform/vivid/vivid-vid-common.c b/drivers/media/platform/vivid/vivid-vid-common.c
index 96ccd3c38dd2..45f10a7f9b46 100644
--- a/drivers/media/platform/vivid/vivid-vid-common.c
+++ b/drivers/media/platform/vivid/vivid-vid-common.c
@@ -197,6 +197,14 @@ struct vivid_fmt vivid_formats[] = {
 		.buffers = 1,
 	},
 	{
+		.fourcc   = V4L2_PIX_FMT_Y16_BE,
+		.vdownsampling = { 1 },
+		.bit_depth = { 16 },
+		.is_yuv   = true,
+		.planes   = 1,
+		.buffers = 1,
+	},
+	{
 		.fourcc   = V4L2_PIX_FMT_RGB332, /* rrrgggbb */
 		.vdownsampling = { 1 },
 		.bit_depth = { 8 },
-- 
2.1.4

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