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path: root/package/media-ctl/media-ctl-0001-add-kernel-headers-for-compatibility-with-old-toolchains.patch
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From 480b9effa08541b5df369dd6516013282cf28bd8 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Sun, 6 Oct 2013 17:24:04 +0200
Subject: [PATCH] Add kernel headers for compatibility with old toolchains

The media controller mechanism is relatively new in the Linux kernel,
and therefore all toolchains don't yet have the necessary
headers. This patch makes sure that media-ctl provides such headers,
as was already the case with v4l2-common.h, v4l2-subdev.h and
videodev2.h.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 configure.ac              |   6 +--
 src/linux/media.h         | 132 ++++++++++++++++++++++++++++++++++++++++++++++
 src/linux/v4l2-mediabus.h | 119 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 252 insertions(+), 5 deletions(-)
 create mode 100644 src/linux/media.h
 create mode 100644 src/linux/v4l2-mediabus.h

diff --git a/configure.ac b/configure.ac
index a749794..56eb71f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -51,11 +51,7 @@ AC_ARG_WITH(kernel-headers,
 CPPFLAGS="$CPPFLAGS -I$KERNEL_HEADERS_DIR/include"
 
 # Checks for header files.
-AC_CHECK_HEADERS([linux/media.h \
-		  linux/types.h \
-		  linux/v4l2-mediabus.h \
-		  linux/v4l2-subdev.h \
-		  linux/videodev2.h],
+AC_CHECK_HEADERS([linux/types.h],
 		  [],
 		  [echo "ERROR: Kernel header file not found or not usable!"; exit 1])
 
diff --git a/src/linux/media.h b/src/linux/media.h
new file mode 100644
index 0000000..410e7cc
--- /dev/null
+++ b/src/linux/media.h
@@ -0,0 +1,132 @@
+/*
+ * Multimedia device API
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *	     Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __LINUX_MEDIA_H
+#define __LINUX_MEDIA_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#include <linux/version.h>
+
+#define MEDIA_API_VERSION	KERNEL_VERSION(0, 1, 0)
+
+struct media_device_info {
+	char driver[16];
+	char model[32];
+	char serial[40];
+	char bus_info[32];
+	__u32 media_version;
+	__u32 hw_revision;
+	__u32 driver_version;
+	__u32 reserved[31];
+};
+
+#define MEDIA_ENT_ID_FLAG_NEXT		(1 << 31)
+
+#define MEDIA_ENT_TYPE_SHIFT		16
+#define MEDIA_ENT_TYPE_MASK		0x00ff0000
+#define MEDIA_ENT_SUBTYPE_MASK		0x0000ffff
+
+#define MEDIA_ENT_T_DEVNODE		(1 << MEDIA_ENT_TYPE_SHIFT)
+#define MEDIA_ENT_T_DEVNODE_V4L		(MEDIA_ENT_T_DEVNODE + 1)
+#define MEDIA_ENT_T_DEVNODE_FB		(MEDIA_ENT_T_DEVNODE + 2)
+#define MEDIA_ENT_T_DEVNODE_ALSA	(MEDIA_ENT_T_DEVNODE + 3)
+#define MEDIA_ENT_T_DEVNODE_DVB		(MEDIA_ENT_T_DEVNODE + 4)
+
+#define MEDIA_ENT_T_V4L2_SUBDEV		(2 << MEDIA_ENT_TYPE_SHIFT)
+#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR	(MEDIA_ENT_T_V4L2_SUBDEV + 1)
+#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH	(MEDIA_ENT_T_V4L2_SUBDEV + 2)
+#define MEDIA_ENT_T_V4L2_SUBDEV_LENS	(MEDIA_ENT_T_V4L2_SUBDEV + 3)
+
+#define MEDIA_ENT_FL_DEFAULT		(1 << 0)
+
+struct media_entity_desc {
+	__u32 id;
+	char name[32];
+	__u32 type;
+	__u32 revision;
+	__u32 flags;
+	__u32 group_id;
+	__u16 pads;
+	__u16 links;
+
+	__u32 reserved[4];
+
+	union {
+		/* Node specifications */
+		struct {
+			__u32 major;
+			__u32 minor;
+		} v4l;
+		struct {
+			__u32 major;
+			__u32 minor;
+		} fb;
+		struct {
+			__u32 card;
+			__u32 device;
+			__u32 subdevice;
+		} alsa;
+		int dvb;
+
+		/* Sub-device specifications */
+		/* Nothing needed yet */
+		__u8 raw[184];
+	};
+};
+
+#define MEDIA_PAD_FL_SINK		(1 << 0)
+#define MEDIA_PAD_FL_SOURCE		(1 << 1)
+
+struct media_pad_desc {
+	__u32 entity;		/* entity ID */
+	__u16 index;		/* pad index */
+	__u32 flags;		/* pad flags */
+	__u32 reserved[2];
+};
+
+#define MEDIA_LNK_FL_ENABLED		(1 << 0)
+#define MEDIA_LNK_FL_IMMUTABLE		(1 << 1)
+#define MEDIA_LNK_FL_DYNAMIC		(1 << 2)
+
+struct media_link_desc {
+	struct media_pad_desc source;
+	struct media_pad_desc sink;
+	__u32 flags;
+	__u32 reserved[2];
+};
+
+struct media_links_enum {
+	__u32 entity;
+	/* Should have enough room for pads elements */
+	struct media_pad_desc *pads;
+	/* Should have enough room for links elements */
+	struct media_link_desc *links;
+	__u32 reserved[4];
+};
+
+#define MEDIA_IOC_DEVICE_INFO		_IOWR('|', 0x00, struct media_device_info)
+#define MEDIA_IOC_ENUM_ENTITIES		_IOWR('|', 0x01, struct media_entity_desc)
+#define MEDIA_IOC_ENUM_LINKS		_IOWR('|', 0x02, struct media_links_enum)
+#define MEDIA_IOC_SETUP_LINK		_IOWR('|', 0x03, struct media_link_desc)
+
+#endif /* __LINUX_MEDIA_H */
diff --git a/src/linux/v4l2-mediabus.h b/src/linux/v4l2-mediabus.h
new file mode 100644
index 0000000..7d64e0e
--- /dev/null
+++ b/src/linux/v4l2-mediabus.h
@@ -0,0 +1,119 @@
+/*
+ * Media Bus API header
+ *
+ * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_V4L2_MEDIABUS_H
+#define __LINUX_V4L2_MEDIABUS_H
+
+#include <linux/types.h>
+#include <linux/videodev2.h>
+
+/*
+ * These pixel codes uniquely identify data formats on the media bus. Mostly
+ * they correspond to similarly named V4L2_PIX_FMT_* formats, format 0 is
+ * reserved, V4L2_MBUS_FMT_FIXED shall be used by host-client pairs, where the
+ * data format is fixed. Additionally, "2X8" means that one pixel is transferred
+ * in two 8-bit samples, "BE" or "LE" specify in which order those samples are
+ * transferred over the bus: "LE" means that the least significant bits are
+ * transferred first, "BE" means that the most significant bits are transferred
+ * first, and "PADHI" and "PADLO" define which bits - low or high, in the
+ * incomplete high byte, are filled with padding bits.
+ *
+ * The pixel codes are grouped by type, bus_width, bits per component, samples
+ * per pixel and order of subsamples. Numerical values are sorted using generic
+ * numerical sort order (8 thus comes before 10).
+ *
+ * As their value can't change when a new pixel code is inserted in the
+ * enumeration, the pixel codes are explicitly given a numerical value. The next
+ * free values for each category are listed below, update them when inserting
+ * new pixel codes.
+ */
+enum v4l2_mbus_pixelcode {
+	V4L2_MBUS_FMT_FIXED = 0x0001,
+
+	/* RGB - next is 0x1009 */
+	V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE = 0x1001,
+	V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE = 0x1002,
+	V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE = 0x1003,
+	V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE = 0x1004,
+	V4L2_MBUS_FMT_BGR565_2X8_BE = 0x1005,
+	V4L2_MBUS_FMT_BGR565_2X8_LE = 0x1006,
+	V4L2_MBUS_FMT_RGB565_2X8_BE = 0x1007,
+	V4L2_MBUS_FMT_RGB565_2X8_LE = 0x1008,
+
+	/* YUV (including grey) - next is 0x2014 */
+	V4L2_MBUS_FMT_Y8_1X8 = 0x2001,
+	V4L2_MBUS_FMT_UYVY8_1_5X8 = 0x2002,
+	V4L2_MBUS_FMT_VYUY8_1_5X8 = 0x2003,
+	V4L2_MBUS_FMT_YUYV8_1_5X8 = 0x2004,
+	V4L2_MBUS_FMT_YVYU8_1_5X8 = 0x2005,
+	V4L2_MBUS_FMT_UYVY8_2X8 = 0x2006,
+	V4L2_MBUS_FMT_VYUY8_2X8 = 0x2007,
+	V4L2_MBUS_FMT_YUYV8_2X8 = 0x2008,
+	V4L2_MBUS_FMT_YVYU8_2X8 = 0x2009,
+	V4L2_MBUS_FMT_Y10_1X10 = 0x200a,
+	V4L2_MBUS_FMT_YUYV10_2X10 = 0x200b,
+	V4L2_MBUS_FMT_YVYU10_2X10 = 0x200c,
+	V4L2_MBUS_FMT_Y12_1X12 = 0x2013,
+	V4L2_MBUS_FMT_UYVY8_1X16 = 0x200f,
+	V4L2_MBUS_FMT_VYUY8_1X16 = 0x2010,
+	V4L2_MBUS_FMT_YUYV8_1X16 = 0x2011,
+	V4L2_MBUS_FMT_YVYU8_1X16 = 0x2012,
+	V4L2_MBUS_FMT_YUYV10_1X20 = 0x200d,
+	V4L2_MBUS_FMT_YVYU10_1X20 = 0x200e,
+
+	/* Bayer - next is 0x3015 */
+	V4L2_MBUS_FMT_SBGGR8_1X8 = 0x3001,
+	V4L2_MBUS_FMT_SGBRG8_1X8 = 0x3013,
+	V4L2_MBUS_FMT_SGRBG8_1X8 = 0x3002,
+	V4L2_MBUS_FMT_SRGGB8_1X8 = 0x3014,
+	V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8 = 0x300b,
+	V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8 = 0x300c,
+	V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8 = 0x3009,
+	V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8 = 0x300d,
+	V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE = 0x3003,
+	V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE = 0x3004,
+	V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE = 0x3005,
+	V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE = 0x3006,
+	V4L2_MBUS_FMT_SBGGR10_1X10 = 0x3007,
+	V4L2_MBUS_FMT_SGBRG10_1X10 = 0x300e,
+	V4L2_MBUS_FMT_SGRBG10_1X10 = 0x300a,
+	V4L2_MBUS_FMT_SRGGB10_1X10 = 0x300f,
+	V4L2_MBUS_FMT_SBGGR12_1X12 = 0x3008,
+	V4L2_MBUS_FMT_SGBRG12_1X12 = 0x3010,
+	V4L2_MBUS_FMT_SGRBG12_1X12 = 0x3011,
+	V4L2_MBUS_FMT_SRGGB12_1X12 = 0x3012,
+
+	/* JPEG compressed formats - next is 0x4002 */
+	V4L2_MBUS_FMT_JPEG_1X8 = 0x4001,
+
+	/* Vendor specific formats - next is 0x5002 */
+
+	/* S5C73M3 sensor specific interleaved UYVY and JPEG */
+	V4L2_MBUS_FMT_S5C_UYVY_JPEG_1X8 = 0x5001,
+};
+
+/**
+ * struct v4l2_mbus_framefmt - frame format on the media bus
+ * @width:	frame width
+ * @height:	frame height
+ * @code:	data format code (from enum v4l2_mbus_pixelcode)
+ * @field:	used interlacing type (from enum v4l2_field)
+ * @colorspace:	colorspace of the data (from enum v4l2_colorspace)
+ */
+struct v4l2_mbus_framefmt {
+	__u32			width;
+	__u32			height;
+	__u32			code;
+	__u32			field;
+	__u32			colorspace;
+	__u32			reserved[7];
+};
+
+#endif
-- 
1.8.1.2