alistair23-linux/Documentation/video4linux
Hans Verkuil 63344b6592 [media] vivid: move video loopback control to the capture device
This has been on my TODO list for some time now: the control that enables the video
loopback was part of the controls of the video output device instead of the video
capture device. In practice this was quite annoying since you expect it at the capture
side since that's where you want to make the decision whether to use the TPG or looped
video.

This patch moves the control from the output to the capture side.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-06 07:33:17 -03:00
..
bttv
cx88
cx2341x
4CCs.txt
API.html
cafe_ccic
CARDLIST.au0828
CARDLIST.bttv Documentation: Update cardlists 2014-04-23 09:58:16 -03:00
CARDLIST.cx88
CARDLIST.cx23885 [media] Update Documentation cardlist 2014-11-03 11:35:01 -02:00
CARDLIST.em28xx [media] Update Documentation cardlist 2014-11-03 11:35:01 -02:00
CARDLIST.ivtv
CARDLIST.saa7134 [media] Update Documentation cardlist 2014-11-03 11:35:01 -02:00
CARDLIST.saa7164
CARDLIST.tm6000
CARDLIST.tuner
CARDLIST.usbvision
cpia2_overview.txt
cx18.txt
extract_xc3028.pl
fimc.txt [media] exynos4-is: Remove support for non-dt platforms 2014-05-23 18:52:54 -03:00
gspca.txt
hauppauge-wintv-cx88-ir.txt
lifeview.txt
Makefile v4l2-pci-skeleton: Only build if PCI is available 2014-09-26 11:02:58 +02:00
meye.txt
not-in-cx2388x-datasheet.txt
omap3isp.txt
omap4_camera.txt
pxa_camera.txt
radiotrack.txt
README.cpia2
README.cx88
README.davinci-vpbe
README.ir
README.ivtv
README.pvrusb2
README.saa7134
sh_mobile_ceu_camera.txt
si470x.txt
si476x.txt
si4713.txt
soc-camera.txt [media] platform: Make use of media_bus_format enum 2014-11-14 17:54:08 -02:00
uvcvideo.txt
v4l2-controls.txt [media] media/Documentation: New flag EXECUTE_ON_WRITE 2015-04-08 06:35:16 -03:00
v4l2-framework.txt [media] v4l2-subdev: allow subdev to send an event to the v4l2_device notify function 2015-05-20 13:40:02 -03:00
v4l2-pci-skeleton.c [media] v4l2-pci-skeleton: drop format description 2015-05-01 06:56:14 -03:00
videobuf
vivid.txt [media] vivid: move video loopback control to the capture device 2015-06-06 07:33:17 -03:00
Zoran
zr364xx.txt


What is it?
===========

This is a v4l2/oss device driver for saa7130/33/34/35 based capture / TV
boards.  See http://www.semiconductors.philips.com/pip/saa7134hl for a
description.


Status
======

Almost everything is working.  video, sound, tuner, radio, mpeg ts, ...

As with bttv, card-specific tweaks are needed.  Check CARDLIST for a
list of known TV cards and saa7134-cards.c for the drivers card
configuration info.


Build
=====

Pick up videodev + v4l2 patches from http://bytesex.org/patches/.
Configure, build, install + boot the new kernel.  You'll need at least
these config options:

	CONFIG_I2C=m
	CONFIG_VIDEO_DEV=m

Type "make" to build the driver now.  "make install" installs the
driver.  "modprobe saa7134" should load it.  Depending on the card you
might have to pass card=<nr> as insmod option, check CARDLIST for
valid choices.


Changes / Fixes
===============

Please mail me unified diffs ("diff -u") with your changes, and don't
forget to tell me what it changes / which problem it fixes / whatever
it is good for ...


Known Problems
==============

* The tuner for the flyvideos isn't detected automatically and the
  default might not work for you depending on which version you have.
  There is a tuner= insmod option to override the driver's default.

Card Variations:
================

Cards can use either of these two crystals (xtal):
 - 32.11 MHz -> .audio_clock=0x187de7
 - 24.576MHz -> .audio_clock=0x200000
(xtal * .audio_clock = 51539600)

Some details about 30/34/35:

 - saa7130 - low-price chip, doesn't have mute, that is why all those
 cards should have .mute field defined in their tuner structure.

 - saa7134 - usual chip

 - saa7133/35 - saa7135 is probably a marketing decision, since all those
 chips identifies itself as 33 on pci.

Credits
=======

andrew.stevens@philips.com + werner.leeb@philips.com for providing
saa7134 hardware specs and sample board.


Have fun,

  Gerd

--
Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]