Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 282 insertions, 0 deletions

diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
new file mode 100644
index 00000000000..b5e0cf3448f
--- /dev/null
+++ b/drivers/media/video/v4l2-common.c
@@ -0,0 +1,282 @@
+/*
+ *	Video for Linux Two
+ *
+ *	A generic video device interface for the LINUX operating system
+ *	using a set of device structures/vectors for low level operations.
+ *
+ *	This file replaces the videodev.c file that comes with the
+ *	regular kernel distribution.
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ *
+ * Author:	Bill Dirks <bdirks@pacbell.net>
+ *		based on code by Alan Cox, <alan@cymru.net>
+ *
+ */
+
+/*
+ * Video capture interface for Linux
+ *
+ *	A generic video device interface for the LINUX operating system
+ *	using a set of device structures/vectors for low level operations.
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ * Author:	Alan Cox, <alan@redhat.com>
+ *
+ * Fixes:
+ */
+
+/*
+ * Video4linux 1/2 integration by Justin Schoeman
+ * <justin@suntiger.ee.up.ac.za>
+ * 2.4 PROCFS support ported from 2.4 kernels by
+ *  Iñaki García Etxebarria <garetxe@euskalnet.net>
+ * Makefile fix by "W. Michael Petullo" <mike@flyn.org>
+ * 2.4 devfs support ported from 2.4 kernels by
+ *  Dan Merillat <dan@merillat.org>
+ * Added Gerd Knorrs v4l1 enhancements (Justin Schoeman)
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+#include <asm/div64.h>
+
+#ifdef CONFIG_KMOD
+#include <linux/kmod.h>
+#endif
+
+#if defined(CONFIG_UST) || defined(CONFIG_UST_MODULE)
+#include <linux/ust.h>
+#endif
+
+
+#include <linux/videodev.h>
+
+MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr");
+MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers");
+MODULE_LICENSE("GPL");
+
+/*
+ *
+ *	V 4 L 2   D R I V E R   H E L P E R   A P I
+ *
+ */
+
+/*
+ *  Video Standard Operations (contributed by Michael Schimek)
+ */
+
+#if 0 /* seems to have no users */
+/* This is the recommended method to deal with the framerate fields. More
+   sophisticated drivers will access the fields directly. */
+unsigned int
+v4l2_video_std_fps(struct v4l2_standard *vs)
+{
+	if (vs->frameperiod.numerator > 0)
+		return (((vs->frameperiod.denominator << 8) /
+			 vs->frameperiod.numerator) +
+			(1 << 7)) / (1 << 8);
+	return 0;
+}
+EXPORT_SYMBOL(v4l2_video_std_fps);
+#endif
+
+/* Fill in the fields of a v4l2_standard structure according to the
+   'id' and 'transmission' parameters.  Returns negative on error.  */
+int v4l2_video_std_construct(struct v4l2_standard *vs,
+			     int id, char *name)
+{
+	u32 index = vs->index;
+
+	memset(vs, 0, sizeof(struct v4l2_standard));
+	vs->index = index;
+	vs->id    = id;
+	if (id & (V4L2_STD_NTSC | V4L2_STD_PAL_M)) {
+		vs->frameperiod.numerator = 1001;
+		vs->frameperiod.denominator = 30000;
+		vs->framelines = 525;
+	} else {
+		vs->frameperiod.numerator = 1;
+		vs->frameperiod.denominator = 25;
+		vs->framelines = 625;
+	}
+	strlcpy(vs->name,name,sizeof(vs->name));
+	return 0;
+}
+
+
+/* ----------------------------------------------------------------- */
+/* priority handling                                                 */
+
+#define V4L2_PRIO_VALID(val) (val == V4L2_PRIORITY_BACKGROUND   || \
+			      val == V4L2_PRIORITY_INTERACTIVE  || \
+			      val == V4L2_PRIORITY_RECORD)
+
+int v4l2_prio_init(struct v4l2_prio_state *global)
+{
+	memset(global,0,sizeof(*global));
+	return 0;
+}
+
+int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
+		     enum v4l2_priority new)
+{
+	if (!V4L2_PRIO_VALID(new))
+		return -EINVAL;
+	if (*local == new)
+		return 0;
+
+	atomic_inc(&global->prios[new]);
+	if (V4L2_PRIO_VALID(*local))
+		atomic_dec(&global->prios[*local]);
+	*local = new;
+	return 0;
+}
+
+int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local)
+{
+	return v4l2_prio_change(global,local,V4L2_PRIORITY_DEFAULT);
+}
+
+int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local)
+{
+	if (V4L2_PRIO_VALID(*local))
+		atomic_dec(&global->prios[*local]);
+	return 0;
+}
+
+enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)
+{
+	if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0)
+		return V4L2_PRIORITY_RECORD;
+	if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0)
+		return V4L2_PRIORITY_INTERACTIVE;
+	if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0)
+		return V4L2_PRIORITY_BACKGROUND;
+	return V4L2_PRIORITY_UNSET;
+}
+
+int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local)
+{
+	if (*local < v4l2_prio_max(global))
+		return -EBUSY;
+	return 0;
+}
+
+
+/* ----------------------------------------------------------------- */
+/* some arrays for pretty-printing debug messages                    */
+
+char *v4l2_field_names[] = {
+	[V4L2_FIELD_ANY]        = "any",
+	[V4L2_FIELD_NONE]       = "none",
+	[V4L2_FIELD_TOP]        = "top",
+	[V4L2_FIELD_BOTTOM]     = "bottom",
+	[V4L2_FIELD_INTERLACED] = "interlaced",
+	[V4L2_FIELD_SEQ_TB]     = "seq-tb",
+	[V4L2_FIELD_SEQ_BT]     = "seq-bt",
+	[V4L2_FIELD_ALTERNATE]  = "alternate",
+};
+
+char *v4l2_type_names[] = {
+	[V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap",
+	[V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over",
+	[V4L2_BUF_TYPE_VIDEO_OUTPUT]  = "video-out",
+	[V4L2_BUF_TYPE_VBI_CAPTURE]   = "vbi-cap",
+	[V4L2_BUF_TYPE_VBI_OUTPUT]    = "vbi-out",
+};
+
+char *v4l2_ioctl_names[256] = {
+#if __GNUC__ >= 3
+	[0 ... 255]                      = "UNKNOWN",
+#endif
+	[_IOC_NR(VIDIOC_QUERYCAP)]       = "VIDIOC_QUERYCAP",
+	[_IOC_NR(VIDIOC_RESERVED)]       = "VIDIOC_RESERVED",
+	[_IOC_NR(VIDIOC_ENUM_FMT)]       = "VIDIOC_ENUM_FMT",
+	[_IOC_NR(VIDIOC_G_FMT)]          = "VIDIOC_G_FMT",
+	[_IOC_NR(VIDIOC_S_FMT)]          = "VIDIOC_S_FMT",
+#if 0
+	[_IOC_NR(VIDIOC_G_COMP)]         = "VIDIOC_G_COMP",
+	[_IOC_NR(VIDIOC_S_COMP)]         = "VIDIOC_S_COMP",
+#endif
+	[_IOC_NR(VIDIOC_REQBUFS)]        = "VIDIOC_REQBUFS",
+	[_IOC_NR(VIDIOC_QUERYBUF)]       = "VIDIOC_QUERYBUF",
+	[_IOC_NR(VIDIOC_G_FBUF)]         = "VIDIOC_G_FBUF",
+	[_IOC_NR(VIDIOC_S_FBUF)]         = "VIDIOC_S_FBUF",
+	[_IOC_NR(VIDIOC_OVERLAY)]        = "VIDIOC_OVERLAY",
+	[_IOC_NR(VIDIOC_QBUF)]           = "VIDIOC_QBUF",
+	[_IOC_NR(VIDIOC_DQBUF)]          = "VIDIOC_DQBUF",
+	[_IOC_NR(VIDIOC_STREAMON)]       = "VIDIOC_STREAMON",
+	[_IOC_NR(VIDIOC_STREAMOFF)]      = "VIDIOC_STREAMOFF",
+	[_IOC_NR(VIDIOC_G_PARM)]         = "VIDIOC_G_PARM",
+	[_IOC_NR(VIDIOC_S_PARM)]         = "VIDIOC_S_PARM",
+	[_IOC_NR(VIDIOC_G_STD)]          = "VIDIOC_G_STD",
+	[_IOC_NR(VIDIOC_S_STD)]          = "VIDIOC_S_STD",
+	[_IOC_NR(VIDIOC_ENUMSTD)]        = "VIDIOC_ENUMSTD",
+	[_IOC_NR(VIDIOC_ENUMINPUT)]      = "VIDIOC_ENUMINPUT",
+	[_IOC_NR(VIDIOC_G_CTRL)]         = "VIDIOC_G_CTRL",
+	[_IOC_NR(VIDIOC_S_CTRL)]         = "VIDIOC_S_CTRL",
+	[_IOC_NR(VIDIOC_G_TUNER)]        = "VIDIOC_G_TUNER",
+	[_IOC_NR(VIDIOC_S_TUNER)]        = "VIDIOC_S_TUNER",
+	[_IOC_NR(VIDIOC_G_AUDIO)]        = "VIDIOC_G_AUDIO",
+	[_IOC_NR(VIDIOC_S_AUDIO)]        = "VIDIOC_S_AUDIO",
+	[_IOC_NR(VIDIOC_QUERYCTRL)]      = "VIDIOC_QUERYCTRL",
+	[_IOC_NR(VIDIOC_QUERYMENU)]      = "VIDIOC_QUERYMENU",
+	[_IOC_NR(VIDIOC_G_INPUT)]        = "VIDIOC_G_INPUT",
+	[_IOC_NR(VIDIOC_S_INPUT)]        = "VIDIOC_S_INPUT",
+	[_IOC_NR(VIDIOC_G_OUTPUT)]       = "VIDIOC_G_OUTPUT",
+	[_IOC_NR(VIDIOC_S_OUTPUT)]       = "VIDIOC_S_OUTPUT",
+	[_IOC_NR(VIDIOC_ENUMOUTPUT)]     = "VIDIOC_ENUMOUTPUT",
+	[_IOC_NR(VIDIOC_G_AUDOUT)]       = "VIDIOC_G_AUDOUT",
+	[_IOC_NR(VIDIOC_S_AUDOUT)]       = "VIDIOC_S_AUDOUT",
+	[_IOC_NR(VIDIOC_G_MODULATOR)]    = "VIDIOC_G_MODULATOR",
+	[_IOC_NR(VIDIOC_S_MODULATOR)]    = "VIDIOC_S_MODULATOR",
+	[_IOC_NR(VIDIOC_G_FREQUENCY)]    = "VIDIOC_G_FREQUENCY",
+	[_IOC_NR(VIDIOC_S_FREQUENCY)]    = "VIDIOC_S_FREQUENCY",
+	[_IOC_NR(VIDIOC_CROPCAP)]        = "VIDIOC_CROPCAP",
+	[_IOC_NR(VIDIOC_G_CROP)]         = "VIDIOC_G_CROP",
+	[_IOC_NR(VIDIOC_S_CROP)]         = "VIDIOC_S_CROP",
+	[_IOC_NR(VIDIOC_G_JPEGCOMP)]     = "VIDIOC_G_JPEGCOMP",
+	[_IOC_NR(VIDIOC_S_JPEGCOMP)]     = "VIDIOC_S_JPEGCOMP",
+	[_IOC_NR(VIDIOC_QUERYSTD)]       = "VIDIOC_QUERYSTD",
+	[_IOC_NR(VIDIOC_TRY_FMT)]        = "VIDIOC_TRY_FMT",
+};
+
+/* ----------------------------------------------------------------- */
+
+EXPORT_SYMBOL(v4l2_video_std_construct);
+
+EXPORT_SYMBOL(v4l2_prio_init);
+EXPORT_SYMBOL(v4l2_prio_change);
+EXPORT_SYMBOL(v4l2_prio_open);
+EXPORT_SYMBOL(v4l2_prio_close);
+EXPORT_SYMBOL(v4l2_prio_max);
+EXPORT_SYMBOL(v4l2_prio_check);
+
+EXPORT_SYMBOL(v4l2_field_names);
+EXPORT_SYMBOL(v4l2_type_names);
+EXPORT_SYMBOL(v4l2_ioctl_names);
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */