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path: root/drivers/media/video/ivtv/ivtv-queue.c
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* V4L/DVB (6098): ivtv: kzalloc() returns void pointer, no need to castJesper Juhl2007-10-091-3/+3
| | | | | | | | | Since kzalloc() returns a void pointer, we don't need to cast the return value in drivers/media/video/ivtv/ivtv-queue.c Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6091): ivtv: header cleanupHans Verkuil2007-10-091-2/+0
| | | | | | | | | | - add guards - remove unused header includes - move card-specific stuff from ivtv-driver.h to ivtv-cards.h - move YUV-specific stuff from ivtv-driver.h to ivtv-yuv.h Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6047): ivtv: Fix scatter/gather DMA timeoutsHans Verkuil2007-10-091-27/+36
| | | | | | | | | | | | | | | | | | It turns out that the cx23415/6 DMA engine cannot do scatter/gather DMA reliably. Every so often depending on the phase of the moon and your hardware configuration the cx2341x DMA engine simply chokes on it and you have to reboot to get it working again. This change replaced the scatter/gather DMA by single transfers at a time, where the driver is now responsible for DMA-ing each buffer. UDMA is still done using scatter/gather DMA, that will be fixed soon. Many thanks to Mark Bryars <mark.bryars@etvinteractive.com> for discovering the link between scatter/gather and the DMA timeouts. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6046): ivtv: always steal full frames if out of buffers.Hans Verkuil2007-10-091-22/+32
| | | | | | | | | | | | When there are no more free buffers, then buffers are stolen from the predma queue. Buffers should be stolen from the head of that queue (which is where the most recently added buffers are) and all buffers belonging to a frame should be stolen. Otherwise 'half-frames' would remain in the queue, which leads to ugly playback and complete sync failure for YUV buffers. 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 Verkuil2007-06-081-8/+23
| | | | | | | | | | | | | 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 (5345): ivtv driver for Conexant cx23416/cx23415 MPEG encoder/decoderHans Verkuil2007-04-271-0/+262
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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