linux-kernel - [PATCH v2 01/10] v4l: of: add "newavmode" property for Analog Devices codecs

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Message-Id: <1468973017-17647-2-git-send-email-steve_longerbeam@mentor.com>
Date:	Tue, 19 Jul 2016 17:03:28 -0700
From:	Steve Longerbeam <slongerbeam@...il.com>
To:	lars@...afoo.de
Cc:	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	Steve Longerbeam <steve_longerbeam@...tor.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Javier Martinez Canillas <javier@....samsung.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>
Subject: [PATCH v2 01/10] v4l: of: add "newavmode" property for Analog Devices codecs

This patch adds a "newavmode" boolean property as part of the v4l2 endpoint
properties. This indicates an Analog Devices decoder is generating EAV/SAV
codes to suit Analog Devices encoders.

Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.com>
Cc: Mauro Carvalho Chehab <mchehab@....samsung.com>
Cc: Javier Martinez Canillas <javier@....samsung.com>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: Sakari Ailus <sakari.ailus@...ux.intel.com>
---
 Documentation/devicetree/bindings/media/video-interfaces.txt | 2 ++
 drivers/media/v4l2-core/v4l2-of.c                            | 4 ++++
 include/media/v4l2-mediabus.h                                | 5 +++++
 3 files changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt
index 9cd2a36..6f2df51 100644
--- a/Documentation/devicetree/bindings/media/video-interfaces.txt
+++ b/Documentation/devicetree/bindings/media/video-interfaces.txt
@@ -88,6 +88,8 @@ Optional endpoint properties
 - field-even-active: field signal level during the even field data transmission.
 - pclk-sample: sample data on rising (1) or falling (0) edge of the pixel clock
   signal.
+- newavmode: a boolean property to indicate an Analog Devices decoder is
+  operating in NEWAVMODE. Valid for BT.656 busses only.
 - sync-on-green-active: active state of Sync-on-green (SoG) signal, 0/1 for
   LOW/HIGH respectively.
 - data-lanes: an array of physical data lane indexes. Position of an entry
diff --git a/drivers/media/v4l2-core/v4l2-of.c b/drivers/media/v4l2-core/v4l2-of.c
index 93b3368..719a7d1 100644
--- a/drivers/media/v4l2-core/v4l2-of.c
+++ b/drivers/media/v4l2-core/v4l2-of.c
@@ -109,6 +109,10 @@ static void v4l2_of_parse_parallel_bus(const struct device_node *node,
 		flags |= v ? V4L2_MBUS_DATA_ACTIVE_HIGH :
 			V4L2_MBUS_DATA_ACTIVE_LOW;
 
+	if (endpoint->bus_type == V4L2_MBUS_BT656 &&
+	    of_get_property(node, "newavmode", &v))
+		flags |= V4L2_MBUS_NEWAVMODE;
+
 	if (of_get_property(node, "slave-mode", &v))
 		flags |= V4L2_MBUS_SLAVE;
 	else
diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h
index 34cc99e..0bd5f0e 100644
--- a/include/media/v4l2-mediabus.h
+++ b/include/media/v4l2-mediabus.h
@@ -43,6 +43,11 @@
 /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH	(1 << 12)
 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW		(1 << 13)
+/*
+ * BT.656 specific flags
+ */
+/* Analog Device's NEWAVMODE */
+#define V4L2_MBUS_NEWAVMODE			(1 << 14)
 
 /* Serial flags */
 /* How many lanes the client can use */
-- 
1.9.1