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path: root/drivers/media/video/vivi.c
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2009-01-02V4L/DVB (10135): v4l2: introduce v4l2_file_operations.Hans Verkuil
Introduce a struct v4l2_file_operations for v4l2 drivers. Remove the unnecessary inode argument. Move compat32 handling (and llseek) into the v4l2-dev core: this is now handled in the v4l2 core and no longer in the drivers themselves. Note that this changeset reverts an earlier patch that changed the return type of__video_ioctl2 from int to long. This change will be reinstated later in a much improved version. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-21V4L/DVB (9327): v4l: use video_device.num instead of minor in video%dHans Verkuil
The kernel number of a v4l2 node (e.g. videoX, radioX or vbiX) is now independent of the minor number. So instead of using the minor field of the video_device struct one has to use the num field: this always contains the kernel number of the device node. I forgot about this when I did the v4l2 core change, so this patch converts all drivers that use it in one go. Luckily the change is trivial. Cc: michael@mihu.de Cc: mchehab@infradead.org Cc: corbet@lwn.net Cc: luca.risolia@studio.unibo.it Cc: isely@pobox.com Cc: pe1rxq@amsat.org Cc: royale@zerezo.com Cc: mkrufky@linuxtv.org Cc: stoth@linuxtv.org Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-17V4L/DVB (9239): Add support for rgb555 pixel formats to viviMagnus Damm
This patch adds RGB555 pixel format support to the vivi driver. Both little endian and big endian versions are added. The driver follows the RGB pixel format described in Table 2-2 of the V4L2 API spec, _not_ the older BGR interpretation described in Table 2-1. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-17V4L/DVB (9238): Add support for rgb565 pixel formats to viviMagnus Damm
This patch adds RGB565 pixel format support to the vivi driver. Both little endian and big endian versions are added. The driver follows the RGB pixel format described in Table 2-2 of the V4L2 API spec, _not_ the older BGR interpretation described in Table 2-1. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-17V4L/DVB (9237): Add uyvy pixel format support to viviMagnus Damm
This patch simply adds UYVY pixel format support to the vivi driver. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-17V4L/DVB (9236): Teach vivi about multiple pixel formatsMagnus Damm
This patch contains the ground work to add support for multiple pixel formats to vivi.c Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-17V4L/DVB (9235): Precalculate vivi yuv valuesMagnus Damm
This patch improves the color space conversion code in vivi.c to directly draw with precalculated YUV values as palette instead of drawing with YUV that is calculated from RGB for every two pixels. This way we eliminate the need for 9 multiplications every two pixels. A side effect of this patch is that the time counter is changed from green text on black background to white text on black background. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8613): v4l: move BKL down to the driver level.Hans Verkuil
The BKL is now moved from the video_open function in v4l2-dev.c to the various drivers. It seems about a third of the drivers already has a lock of some sort protecting the open(), another third uses video_exclusive_open (yuck!) and the last third required adding the BKL in their open function. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-09-03V4L/DVB (8842): vivi_release(): fix use-after-freeAdrian Bunk
video_device_release() does kfree(), which made the following printk() doing a use-after-free. printk() first and release then. Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-09-03V4L/DVB (8751): vivi: Fix some issues at vivi register routineMauro Carvalho Chehab
This patch fixes several small issues at vivi register routines: 1) minor and n_devs should be unsigned; 2) n_devs = 0 were not properly handled; 3) if n_devs specify a high number, the driver would just roll back and won't register any device. The proper behaviour is to keep all succeded devices registered; 4) both n_devs and minor were using 0 as permissions. Better to have them with 0444. With the current patch, if n_devs specify a very large value, it will register all possible devices. For example, on a machine without any other V4L drivers loaded, with this patch, we will have something like: vivi: V4L2 device registered as /dev/video0 vivi: V4L2 device registered as /dev/video1 vivi: V4L2 device registered as /dev/video2 ... vivi: V4L2 device registered as /dev/video31 video_register_device_index: get_index failed Video Technology Magazine Virtual Video Capture Board ver 0.5.0 successfully loaded. 5) The number of allocated devices on success is now kept at n_devs: $ cat /sys/module/vivi/parameters/n_devs 32 Thanks to Henne <henne@nachtwindheim.de> for pointing that there were some issues at vivi. Cc: Henne <henne@nachtwindheim.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-07-27V4L/DVB (8523): v4l2-dev: remove unused type and type2 field from video_deviceHans Verkuil
The type and type2 fields were unused and so could be removed. Instead add a vfl_type field that contains the type of the video device. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-26V4L/DVB (8482): videodev: move all ioctl callbacks to a new v4l2_ioctl_ops ↵Hans Verkuil
struct All ioctl callbacks are now stored in a new v4l2_ioctl_ops struct. Drivers fill in a const struct v4l2_ioctl_ops and video_device just contains a const pointer to it. This ensures a clean separation between the const ops struct and the non-const video_device struct. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-23V4L/DVB (8430): videodev: move some functions from v4l2-dev.h to ↵Hans Verkuil
v4l2-common.h or v4l2-ioctl.h The functions in a header should not belong to another module. The prio functions belong to v4l2-common.c, so move them to v4l2-common.h. The ioctl functions belong to v4l2-ioctl.c, so create a new v4l2-ioctl.h header and move those functions to it. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (8024): vivi: rename MODULE_NAME macro to VIVI_MODULE_NAME to avoid ↵Mauro Carvalho Chehab
namespace conflicts Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (8023): vivi: announce that it is registered as /dev/video%dCarl Karsten
Signed-off-by: Carl Karsten <carl@personnelware.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (7949): videodev: renamed the vidioc_*_fmt_* callbacksHans Verkuil
The naming for the callbacks that handle the VIDIOC_ENUM_FMT and VIDIOC_S/G/TRY_FMT ioctls was very confusing. Renamed it to match the v4l2_buf_type name. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-26V4L/DVB (8100): V4L/vivi: fix possible memory leak in vivi_fillbuffMarcin Slusarz
Move allocation after first check and fix memory leak. Noticed-by: Daniel Marjamäki <danielm77@spray.se> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-26V4L/DVB (7732): vivi: fix a warningMauro Carvalho Chehab
some gcc versions complain that fh is used without being defined. The error report is bogus. However, fixing it is trivial. Better to make gcc happy. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7551): vivi: Add a missing \nMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7518): media/video/ replace remaining __FUNCTION__ occurrencesHarvey Harrison
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7492): vivi: Simplify the vivi driver and avoid deadlocksBrandon Philips
vivi previously had a very complex queuing system and held spinlocks while doing copy_to_user, kmalloc, etc. This caused the driver to easily deadlock when a multi-threaded application used it and revealed bugs in videobuf too. This replaces the copy_to_user with memcpy since we were never copying to user space addresses. And makes the kmalloc atomic. Signed-off-by: Brandon Philips <bphilips@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7491): vivi: make vivi openable only onceBrandon Philips
vivi currently doesn't have the infrastructure to handle being opened more than one time and will crash if it is. So, make it openable only once. Signed-off-by: Brandon Philips <bphilips@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7456): vivi: Add 32bit compatibility to the moduleMauro Carvalho Chehab
Thanks to Jiri Slaby <jirislaby@gmail.com> for pointing this issue. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (7022): Fix timestamp presentation on vivi driverMauro Carvalho Chehab
Due to date overflow, vivi were not working fine anymore. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6817): Cleanup kernel thread and provide overrun detectionMauro Carvalho Chehab
The previous code were a little bit messy. Cleans it up. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6816): Add proper locking for buffer fillingMauro Carvalho Chehab
Avoids de-alocating buffers before finishing to fill a buffer Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6815): Fix vivi internal debug messagesMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6807): fix debug enableMauro Carvalho Chehab
The changes at vivi_template make debug option to not work properly. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6806): Allow emulating changes of video std by viviMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6758): Miscelaneous cleanupsMauro Carvalho Chehab
Manually fixed all pertinent checkpatch.pl errors inside the source code. Also removed some unused code at the driver and a few minor cleanups. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6755): Avoid troubles when using multiple devicesMauro Carvalho Chehab
mv_count is a counter used to move the vertical bars. Before this patch, it where a static var. This works fine for just one device. However, when using multiple devices, every device would increment it. This patch moves it to its correct place: struct vivi_dev. So, now, each device has its own data. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6754): Allow vivi to open multiple video devicesMauro Carvalho Chehab
Now, it is possible to open multiple vivi devices, by using n_devs parameter. This makes vivi driver closer to a real one. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6753): Fix vivi to support non-zero minor nodeMauro Carvalho Chehab
There were a trouble at vivi driver when using non-zero inodes. This where due to not properly preserving the minor inode after calling video_register. Since this driver is a reference for newer drivers, and it is possible to have more than one video device inside the machine, this patch makes vivi to dynamically allocate video_device struct. Thanks to Gregor Jasny <jasny@vidsoft.de> for pointing the issue. Also, this patch removes a very anoying (but useless) message of not having a proper release call. CC: Gregor Jasny <jasny@vidsoft.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6600): V4L: videobuf: don't chew up namespace STATE_.*, convert to ↵Brandon Philips
VIDEOBUF_ s/STATE_NEEDS_INIT/VIDEOBUF_NEEDS_INIT/g s/STATE_PREPARED/VIDEOBUF_PREPARED/g s/STATE_QUEUED/VIDEOBUF_QUEUED/g s/STATE_ACTIVE/VIDEOBUF_ACTIVE/g s/STATE_DONE/VIDEOBUF_DONE/g s/STATE_ERROR/VIDEOBUF_ERROR/g s/STATE_IDLE/VIDEOBUF_IDLE/g Signed-off-by: Brandon Philips <bphilips@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11V4L/DVB (6602): V4L: Convert videobuf drivers to videobuf_stopBrandon Philips
Drivers were using cookie cutter code for stopping the read/stream. Use the new videobuf_stop function which is lock safe. Signed-off-by: Brandon Philips <bphilips@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-22V4L/DVB (6320): v4l core: remove the unused .hardware V4L1 fieldMauro Carvalho Chehab
struct video_device used to define a .hardware field. While initialized on severl drivers, this field is never used inside V4L. However, drivers using it need to include the old V4L1 header. This seems to cause compilation troubles with some random configs. Better just to remove it from all drivers. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-10V4L/DVB (6316): Change list_for_each+list_entry to list_for_each_entryTrent Piepho
The rest of V4L files. There is one list_for_each+list_entry in cpia_pp.c that wasn't changed because it expects the loop iterator to remain NULL if the list is empty. A bug in vivi is fixed; the 'safe' version needs to be used because the loop deletes the list entries. Simplify a second loop in vivi and get rid if an un-used variable in that loop. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-10V4L/DVB (6277): vivi cleanup: remove the unused varsMauro Carvalho Chehab
Vivi driver is now simpler. This patch removes the now unused vars. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-10V4L/DVB (6275): V4L: vivi.c remove the "resource" lockingBrandon Philips
The "resource" locking in vivi isn't needed since streamon/streamoff/read_stream do mutual exclusion using q->reading/q->streaming. Plus it is sort of broken: a) res_locked() use in vivi_read() is racey. b) res_free() calls mutex_lock twice causing streamoff to break Signed-off-by: Brandon Philips <bphilips@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-10V4L/DVB (6274): V4L: vivi.c replace logic in vivi_poll with videobuf_poll_streamBrandon Philips
Since vivi is using videobuf_read_stream() it can use videobuf_poll_stream() now. Signed-off-by: Brandon Philips <bphilips@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-10V4L/DVB (6273): V4L: vivi.c vidioc_try_fmt_cap() negotiate a valid fieldBrandon Philips
If the client provides V4L2_FIELD_ANY vivi should return a valid field :) Signed-off-by: Brandon Philips <bphilips@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-10V4L/DVB (6264): Make the vertical lines to moveMauro Carvalho Chehab
While this is not the standard color bar behaviour, having some movement there allows to check if buffers are being properly handled. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-10V4L/DVB (6259): Fix vivi poll() methodMauro Carvalho Chehab
Due to the replace of videobuf_read_one to videobuf_read_stream, poll() method implementation is wrong. This fixes poll() implementation, making read of /dev/video? to work again. With this method, an USB driver can use video-buf, without needing to request memory from the DMA-safe area. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-09V4L/DVB (6255): Convert vivi to use videobuf-vmallocMauro Carvalho Chehab
This patch removes the usage of videobuf-dma-sg from vivi driver, using instead videobuf-vmalloc. This way, vivi will be useful for testing the newer method. Reverting this patch won't hurt vivi, since both methods work fine. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-09V4L/DVB (6253): Convert vivi to use the newer videobuf-dma-sg moduleMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-09V4L/DVB (6014): vivi: use videobuf_read_stream()Mauro Carvalho Chehab
videobuf_read_stream is more efficient than videobuf_read_one Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5811): Use mutex instead of semaphore in Virtual Video driverMatthias Kaehlcke
The Virtual Video driver uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5727): Remove VIVI_SCATTERMauro Carvalho Chehab
vivi scatter method were used as a proof of concept. It can be safelly removed from mainstream, since the current method is faster and better than the previous solution. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-17Freezer: make kernel threads nonfreezable by defaultRafael J. Wysocki
Currently, the freezer treats all tasks as freezable, except for the kernel threads that explicitly set the PF_NOFREEZE flag for themselves. This approach is problematic, since it requires every kernel thread to either set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't care for the freezing of tasks at all. It seems better to only require the kernel threads that want to or need to be frozen to use some freezer-related code and to remove any freezer-related code from the other (nonfreezable) kernel threads, which is done in this patch. The patch causes all kernel threads to be nonfreezable by default (ie. to have PF_NOFREEZE set by default) and introduces the set_freezable() function that should be called by the freezable kernel threads in order to unset PF_NOFREEZE. It also makes all of the currently freezable kernel threads call set_freezable(), so it shouldn't cause any (intentional) change of behaviour to appear. Additionally, it updates documentation to describe the freezing of tasks more accurately. [akpm@linux-foundation.org: build fixes] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-21V4L/DVB (5249): Fix compiler warning in vivi.cMarcel Siegert
The result of copy_to_user was not used, so the compiler complained now a warning will be issued if copy_to_user fails. Signed-off-by: Marcel Siegert <mws@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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