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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Daniel Drake <dsd@laptop.org>
For VIDIOC_G_FMT/VIDIOC_TRY_FMT, the V4L2 API spec states:
"Drivers should not return an error code unless the input is ambiguous"
"Very simple, inflexible devices may even ignore all input and always
return the default parameters."
"When the requested buffer type is not supported drivers return an
EINVAL error code."
i.e. returning errors for unsupported fields is bad, and it's ok to
unconditionally overwrite user-requested settings
This patch makes ov7670 meet that behaviour, and brings it in line with
other drivers e.g. stk-webcam. It also fixes compatibility with (unpatched)
gstreamer.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Dean Anderson <dean@sensoray.com>
This patch fixes some coding style issues.
It also fixes a NULL de-reference on driver unload.
The permissions for the module parameters were changed to 0644.
Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Jean Delvare <khali@linux-fr.org>
This has been commented out for years, it's about time to get rid of
it.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Laurent Pinchart <laurent.pinchart@skynet.be>
The uvcvideo driver's uvc_v4l2_open() method is called from videodev's
video_open() function, which means it is called with the videodev_lock
mutex held. uvc_v4l2_open() then takes uvc_driver.open_mutex to check
dev->state and avoid racing against a device disconnect, which means
that open_mutex must nest inside videodev_lock.
However uvc_disconnect() takes the open_mutex around setting
dev->state and also around putting its device reference. However, if
uvc_disconnect() ends up dropping the last reference, it will call
uvc_delete(), which calls into the videodev code to unregister its
device, and this will end up taking videodev_lock. This opens a
(unlikely in practice) window for an AB-BA deadlock and also causes a
lockdep warning because of the lock misordering.
Fortunately there is no apparent reason to hold open_mutex when doing
kref_put() in uvc_disconnect(): if uvc_v4l2_open() runs before the
state is set to UVC_DEV_DISCONNECTED, then it will take another
reference to the device and kref_put() won't call uvc_delete; if
uvc_v4l2_open() runs after the state is set, it will run before
uvc_delete(), see the state, and return immediately -- uvc_delete()
does uvc_unregister_video() (and hence video_unregister_device(),
which is synchronized with videodev_lock) as its first thing, so there
is no risk of use-after-free in uvc_v4l2_open().
Bug diagnosed based on a lockdep warning reported by Romano Giannetti
<romano@dea.icai.upcomillas.es>.
Signed-off-by: Roland Dreier <roland@digitalvampire.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Andrew Morton <akpm@linux-foundation.org>
drivers/media/video/uvc/uvc_v4l2.c: In function `uvc_v4l2_mmap':
drivers/media/video/uvc/uvc_v4l2.c:1035: warning: 'buffer' might be used uninitialized in this function
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Andres Salomon <dilinger@queued.net>
Cortland Setlow pointed out a bug in ov7670.c where the result from
ov7670_read() was just being checked for !0, rather than <0. This
made me realize that ov7670_read's semantics were rather confusing;
it both fills in 'value' with the result, and returns it. This is
goes against general kernel convention; so rather than fixing callers,
let's fix the function.
This makes ov7670_read return <0 in the case of an error, and 0 upon
success. Thus, code like:
res = ov7670_read(...);
if (!res)
goto error;
..will work properly.
Signed-off-by: Cortland Setlow <csetlow@tower-research.com>
Signed-off-by: Andres Salomon <dilinger@debian.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
/home/v4l/master/v4l/gspca.c: In function 'gspca_frame_add':
/home/v4l/master/v4l/gspca.c:222: warning: format '%d' expects type 'int', but argument 2 has type 'long int'
/home/v4l/master/v4l/gspca.c: In function 'dev_read':
/home/v4l/master/v4l/gspca.c:1568: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
/home/v4l/master/v4l/gspca.c:1618: warning: format '%d' expects type 'int', but argument 3 has type 'size_t'
Acked-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Christophe Jaillet <jaillet.christophe@wanadoo.fr>
1) Remove a useless initialisation of 'i'
2) Avoid clearing the memory allocated twice (once in 'kcalloc', once
in 'sg_init_table')
3) Remove a test that can never trigger. The function returns NULL in
such a case, so we know that at this point 'pages[0]' != NULL
Signed-off-by: Christophe Jaillet <jaillet.christophe@wanadoo.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: David Howells <dhowells@redhat.com>
Fix casts of pointers to integers of different sizes in the ivtv framebuffer
driver.
These were introduced in patch 38eb6ba5b8487d15b020fe391d324edd2b659b03.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: David Howells <dhowells@redhat.com>
Fix a const pointer to non-const pointer assignment error in the Conexant
cx23418 MPEG encoder driver.
This was introduces in patch 1c1e45d17b663d4749af456ab7c2fc1f36405ef8.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Jean Delvare <khali@linux-fr.org>
The tvaudio driver is using "official" I2C device IDs for internal
purpose. There must be some historical reason behind this but anyway,
it shouldn't do that. As the stored values are never used, the easiest
way to fix the problem is simply to remove them altogether.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Jean Delvare <khali@linux-fr.org>
I2C_HW_SMBUS_OVFX2 is referenced in ovcamchip_core.c, but no bus uses
this driver ID, so we can remove the reference. As far as I can see,
the Cypress FX2 webcam is handled by a different driver (dvb-usb).
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Massimo Piccioni <alsa@piccio.org>
The following patch updates saa7134 driver to add support for AVerMedia
M103 MiniPCI DVB-T Hybrid card.
Signed-off-by: Massimo Piccioni <alsa@piccio.org>
[mchehab@infradead.org: fixed merge conflicts and a small codingstyle]
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
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From: Jean-Francois Moine <moinejf@free.fr>
main: V4L2_PIX_FMT_SPCA501 is compressed (thanks to Hans de Goede)
main: return 0 when no change on vidioc_s_fmt_cap (thanks to Hans de Goede)
pac207: cleanup
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
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From: Jean-Francois Moine <moinejf@free.fr>
- remaning subdrivers added
- remove the decoding helper and some specific frame decodings
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
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From: Mike Isely <isely@pobox.com>
When switching video standard, ensure that video GOP size remains
appropriately configured.
Signed-off-by: Mike Isely <isely@pobox.com>
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From: Mike Isely <isely@pobox.com>
Signed-off-by: Mike Isely <isely@pobox.com>
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From: Tim Farrington <timf@iinet.net.au>
Composite was originally mis-labelled as name_comp1,
so it should be simply redone as name_comp,
with its now corrected attributes.
Signed-off-by: Tim Farrington <timf@iinet.net.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Kernel-sync:
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
As reported by Hermann Pitton:
CC [M] /mnt/xfer/mercurial/v4l-dvb-head/v4l-dvb/v4l/s2255drv.o
s2255drv.c: In function 'vidioc_querycap':
s2255drv.c:809: error: implicit declaration of function 'dev_name'
s2255drv.c:809: warning: passing argument 2 of 'strlcpy' makes pointer from integer without a cast
Tested with kernel 2.6.25.6
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Callback naming has changed. Fix to the proper convention.
CC: Dean Anderson <dean@sensoray.com>
CC: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Conexant graciously gave us permission to redistribute the
firmware. Update the documentation where the firmware can be
downloaded.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
The MPEG controls could not be enumerated and so could not be read or set
through the v4l2-ctl utility or shown in control panels.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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USB Video Class driver
This driver supports video input devices compliant with the USB Video Class
specification. This means lots of currently manufactured webcams, and probably
most of the future ones.
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Notice: Due to MAINTAINERS file that isn't at mercurial tree, I've
committed it on my -git and backported to -hg.
kernel-sync:
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Reverted the 'Fix unintended auto configurations in cx18-av-core' patch,
instead disable the auto config completely.
Fix a bug in cx18_av_vbi_setup() where the standard tests were done
in the wrong order.
Tested with NTSC-M, PAL-BG, PAL-I, PAL-DK, PAL-M, PAL-Nc, SECAM-DK,
SECAM-L and SECAM-BG. The last one does not work at the moment due to
a tda9887.c bug.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Dean Anderson <dean@sensoray.com>
It was primarily developed by Dean Anderson with only a little bit of
guidance and cleanup by Greg.
Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Devin Heitmueller <devin.heitmueller@gmail.com>
em28xx-cards.c
em28xx-input.c
em28xx-video.c
em28xx.h
- Add support for the PointNix Intra-Oral Camera, which required addition of
a construct for reading the "snapshot" button (provided on the em2860 and
em2880 chips, but this is the first case where I have seen it actually used
in a product). The button is wired to pin 56 on the em2880.
http://www.pointnix.com/ENG/dental/product_02.asp
Thanks to Roberto Mantovani <rmantovani@libero.it> for testing the changes
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Dan Taylor <dtaylor@startrac.com>
Signed-off-by: Star Trac by Unisen, Inc. Dan Taylor <dtaylor@startrac.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Douglas Schilling Landgraf <dougsland@gmail.com>
Convert cx23885-417 to use video_ioctl2
Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
V4L2_CID_PRIVATE_BASE controls are not allowed when called from
VIDIOC_S/G_EXT_CTRL as extended controls use a better mechanism
for private controls. But still allow it when called from the
VIDIOC_G/S_CTRL to extended control conversion in video_ioctl2()
for backwards compatibility.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
videodev converts old-style controls to an extended control so the ivtv and
cx18 drivers no longer have to handle both.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
- add sanity checks for the extended controls argument.
- if the driver only supports extended controls, then convert
old-style controls to an extended control callback.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Thanks to Randy Dunlap for reporting this.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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