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path: root/drivers/media/video/ivtv/ivtv-vbi.c
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* [media] rename most media/video pci drivers to media/pciMauro Carvalho Chehab2012-08-151-549/+0
| | | | | | | | Rename all PCI drivers with their own directory under drivers/media/video into drivers/media/pci and update the building system. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] ivtv: Internally separate encoder & decoder standard settingIan Armstrong2011-06-011-1/+1
| | | | | | | | | | | | Internally separates the setting of the broadcast standard for the encoder & decoder. Externally there's no change in functionality. [awalls@md.metrocast.net: Edited to fix a checkpatch gripe about multiple assignment and to remove a now unused DEFINE_WAIT() due to this patch] Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] ivtv: Fix sparse warning regarding a user pointer in ↵Andy Walls2011-03-211-1/+1
| | | | | | | | | | | ivtv_write_vbi_from_user() Fix the first, botched attempt at preventing direct use of a user pointer in ivtv_write_vbi(). Reported-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] ivtv: Return EFAULT when copy_from_user() fails in ↵Andy Walls2010-12-291-4/+10
| | | | | | | | | | | ivtv_write_vbi_from_user() If write() on a VBI device node fails due to a bad buffer pointer from userspace, we should notify the application properly with EFAULT, per the V4L2 API spec. Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] ivtv: ivtv_write_vbi() should use copy_from_user() for user data buffersAndy Walls2010-12-291-36/+73
| | | | | | | | | | | | | | | | | ivtv_write_vbi() is used for both VBI data that came from the driver internally and VBI data that came from the user. However, it did not use copy_from_user() for reading the VBI data from the user buffers. This change adds a new version of the function, ivtv_write_vbi_from_user(), that uses copy_from_user() to read the VBI data provided via user buffers. This should resolve a sparse build warning reported by Dave Gilbert. Reported-by: Dr. David Alan Gilbert <linux at treblig.org> Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB: v4l: move vbi-specific video ops to a new vbi ops structHans Verkuil2010-05-191-8/+8
| | | | | | | | | Only a relatively small number of video receivers and transmitters actually support VBI. So start moving the vbi specific ops to an ops struct of their own. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB: ivtv: sizeof() => ARRAY_SIZE()Dan Carpenter2010-05-181-1/+1
| | | | | | | | | | | This fixes a smatch warning: drivers/media/video/ivtv/ivtv-vbi.c +138 ivtv_write_vbi(43) error: buffer overflow 'vi->cc_payload' 256 <= 1023 Signed-off-by: Dan Carpenter <error27@gmail.com> Reviewed-by: Andy Walls <awalls@radix.net> Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (11091): cx18, ivtv: Ensure endianess for linemasks in VBI embedded ↵Andy Walls2009-03-301-0/+2
| | | | | | | | | | | | | in MPEG stream The sliced VBI payloads that cx18 and ivtv would insert in the MPEG stream did not have consistent endianess for the linemasks in the payload (a big endian platform would write them out big endian). This change ensures the linemasks are always stored as little-endian in the MPEG stream to ensure cross platform consistency in parsing the generated MPEG stream. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9835): ivtv/ivtvfb: convert to v4l2_device/v4l2_subdev.Hans Verkuil2008-12-301-8/+9
| | | | | Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9162): ivtv: fix raw/sliced VBI mixupHans Verkuil2008-10-131-1/+1
| | | | | | | | | | | | | | The service_set field was used in saa7115 and cx25840 to determine whether raw or sliced VBI was desired. This is incorrect since it is perfectly valid to select sliced VBI with a service_set of 0. Instead these drivers should checked on VIDIOC_S_FMT whether the type field matches the raw or sliced VBI type. Updated ivtv accordingly. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8648): ivtv: improve CC supportHans Verkuil2008-09-031-1/+3
| | | | | | | | | | | | | | - change the work-queue to a single threaded high prio workqueue - use DMA instead of PIO for the sliced VBI data. - remove some incorrect tests - increase the internal VBI capture queue size for sliced VBI packets - ignore duplicate VBI lines With these changes it should finally be possible to get reliable closed captions. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (7852): ivtv: prefix ivtv external functions with ivtv_Hans Verkuil2008-05-141-1/+2
| | | | | | | Fix conflict with cx18 driver. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6116): ivtv: VBI cleanups and fixesHans Verkuil2007-10-091-164/+75
| | | | | | | | | | | | | | Besides some VBI cleanups this patch also fixes a subtle problem with the VBI re-insertion stream where the PIO work handler wasn't called quickly enough, resulting in occasional corrupt data. Furthermore the CC output didn't disable CC correctly and at the right time, causing duplicates to be sent. An saa7127 fix for VPS output was also added: the wrong data was sent. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6092): ivtv: more cleanups, merged ivtv-audio.c and ivtv-video.c ↵Hans Verkuil2007-10-091-2/+62
| | | | | | | into ivtv-routing.c Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6049): ivtv: fix VBI reinsertion decodingHans Verkuil2007-10-091-2/+2
| | | | | | | | | | | | | - Invalid VBI packets should result in an empty VBI frame, not in an zero-sized frame that causes the reader to incorrectly return a 0 (EOF) value. - PIO completion should not reset the sg_pending_size field. - The DMA offset detection code should be ignored for PIO transfers: it somehow messes up the data on the card and is not needed anyway for PIO. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5769): Ivtv: fix broken VBI output supportHans Verkuil2007-07-181-20/+11
| | | | | | | | | | The old service_set_out setting was still tested, even though it no longer was ever set and was in fact obsolete. This meant that everything that was written to /dev/vbi16 was ignored. Removed the service_set_out variable altogether and now it works again. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5675): Move big PIO accesses from the interrupt handler to a ↵Hans Verkuil2007-06-081-1/+1
| | | | | | | | | | | | | workhandler Sliced VBI transfers use PIO instead of DMA. This was done inside the interrupt handler, but since PIO accesses are very slow this meant that a lot of time was spent inside the interrupt handler. All PIO copies are now moved to a workqueue. This should fix various issues with missing time ticks and remote key hits. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5404): Merges VBI & YUV handling into a single work queue.Hans Verkuil2007-04-271-9/+2
| | | | | | Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5345): ivtv driver for Conexant cx23416/cx23415 MPEG encoder/decoderHans Verkuil2007-04-271-0/+545
It took three core maintainers, over four years of work, eight new i2c modules, eleven new V4L2 ioctls, three new DVB video ioctls, a Sliced VBI API, a new MPEG encoder API, an enhanced DVB video MPEG decoding API, major YUV/OSD contributions from Ian and John, web/wiki/svn/trac support from Axel Thimm, (hardware) support from Hauppauge, support and assistance from the v4l-dvb people and the many, many users of ivtv to finally make it possible to merge this driver into the kernel. Thank you all! Signed-off-by: Kevin Thayer <nufan_wfk@yahoo.com> Signed-off-by: Chris Kennedy <c@groovy.org> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: John P Harvey <john.p.harvey@btinternet.com> Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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