media: docs: update bttv.rst information
This document is... old. The bttv driver was one of the first drivers at the Kernel. So, the document became a little obsoleted. Update it to reflect some changes that happened along the time affecting this driver and the subsystem. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab
Родитель
f631516f6d
Коммит
729126e4b4
|
|
@ -1,48 +1,64 @@
|
|||
.. SPDX-License-Identifier: GPL-2.0
|
||||
|
||||
===============
|
||||
The bttv driver
|
||||
===============
|
||||
|
||||
Release notes for bttv
|
||||
----------------------
|
||||
|
||||
You'll need at least these config options for bttv:
|
||||
You'll need at least these config options for bttv::
|
||||
|
||||
.. code-block:: none
|
||||
./scripts/config -e PCI
|
||||
./scripts/config -m I2C
|
||||
./scripts/config -m INPUT
|
||||
./scripts/config -m MEDIA_SUPPORT
|
||||
./scripts/config -e MEDIA_PCI_SUPPORT
|
||||
./scripts/config -e MEDIA_ANALOG_TV_SUPPORT
|
||||
./scripts/config -e MEDIA_DIGITAL_TV_SUPPORT
|
||||
./scripts/config -e MEDIA_RADIO_SUPPORT
|
||||
./scripts/config -e RC_CORE
|
||||
./scripts/config -m VIDEO_BT848
|
||||
|
||||
CONFIG_I2C=m
|
||||
CONFIG_I2C_ALGOBIT=m
|
||||
CONFIG_VIDEO_DEV=m
|
||||
If your board has digital TV, you'll also need::
|
||||
|
||||
The latest bttv version is available from http://bytesex.org/bttv/
|
||||
./scripts/config -m DVB_BT8XX
|
||||
|
||||
In this case, please see :doc:`bt8xx` for additional notes.
|
||||
|
||||
Make bttv work with your card
|
||||
-----------------------------
|
||||
|
||||
Just try "modprobe bttv" and see if that works.
|
||||
If you have bttv compiled and installed, just booting the Kernel
|
||||
should be enough for it to try probing it. However, depending
|
||||
on the model, the Kernel may require additional information about
|
||||
the hardware, as the device may not be able to provide such info
|
||||
directly to the Kernel.
|
||||
|
||||
If it doesn't bttv likely could not autodetect your card and needs some
|
||||
insmod options. The most important insmod option for bttv is "card=n"
|
||||
to select the correct card type. If you get video but no sound you've
|
||||
very likely specified the wrong (or no) card type. A list of supported
|
||||
cards is in CARDLIST.bttv
|
||||
cards is in :doc:`bttv-cardlist`.
|
||||
|
||||
If bttv takes very long to load (happens sometimes with the cheap
|
||||
cards which have no tuner), try adding this to your modules.conf:
|
||||
|
||||
.. code-block:: none
|
||||
cards which have no tuner), try adding this to your modules configuration
|
||||
file (usually, it is either ``/etc/modules.conf`` or some file at
|
||||
``/etc/modules-load.d/``, but the actual place depends on your
|
||||
distribution)::
|
||||
|
||||
options i2c-algo-bit bit_test=1
|
||||
|
||||
For the WinTV/PVR you need one firmware file from the driver CD:
|
||||
hcwamc.rbf. The file is in the pvr45xxx.exe archive (self-extracting
|
||||
zip file, unzip can unpack it). Put it into the /etc/pvr directory or
|
||||
use the firm_altera=<path> insmod option to point the driver to the
|
||||
location of the file.
|
||||
Some cards may require an extra firmware file to work. For example,
|
||||
for the WinTV/PVR you need one firmware file from its driver CD,
|
||||
called: ``hcwamc.rbf``. It is inside a self-extracting zip file
|
||||
called ``pvr45xxx.exe``. Just placing it at the ``/etc/firmware``
|
||||
directory should be enough for it to be autoload during the driver's
|
||||
probing mode (e. g. when the Kernel boots or when the driver is
|
||||
manually loaded via ``modprobe`` command).
|
||||
|
||||
If your card isn't listed in CARDLIST.bttv or if you have trouble making
|
||||
audio work, you should read the Sound-FAQ.
|
||||
If your card isn't listed in :doc:`bttv-cardlist` or if you have
|
||||
trouble making audio work, please read :ref:`still_doesnt_work`.
|
||||
|
||||
|
||||
Autodetecting cards
|
||||
|
|
@ -61,16 +77,19 @@ the Subsystem ID in the second line, looks like this:
|
|||
only bt878-based cards can have a subsystem ID (which does not mean
|
||||
that every card really has one). bt848 cards can't have a Subsystem
|
||||
ID and therefore can't be autodetected. There is a list with the ID's
|
||||
in bttv-cards.c (in case you are intrested or want to mail patches
|
||||
with updates).
|
||||
at :doc:`bttv-cardlist` (in case you are intrested or want to mail
|
||||
patches with updates).
|
||||
|
||||
|
||||
.. _still_doesnt_work:
|
||||
|
||||
Still doesn't work?
|
||||
-------------------
|
||||
|
||||
I do NOT have a lab with 30+ different grabber boards and a
|
||||
PAL/NTSC/SECAM test signal generator at home, so I often can't
|
||||
reproduce your problems. This makes debugging very difficult for me.
|
||||
|
||||
If you have some knowledge and spare time, please try to fix this
|
||||
yourself (patches very welcome of course...) You know: The linux
|
||||
slogan is "Do it yourself".
|
||||
|
|
@ -92,102 +111,103 @@ at least the country you are living in).
|
|||
Modprobe options
|
||||
----------------
|
||||
|
||||
Note: "modinfo <module>" prints various information about a kernel
|
||||
module, among them a complete and up-to-date list of insmod options.
|
||||
This list tends to be outdated because it is updated manually ...
|
||||
.. note::
|
||||
|
||||
==========================================================================
|
||||
|
||||
bttv.o
|
||||
The following argument list can be outdated, as we might add more
|
||||
options if ever needed. In case of doubt, please check with
|
||||
``modinfo <module>``.
|
||||
|
||||
.. code-block:: none
|
||||
This command prints various information about a kernel
|
||||
module, among them a complete and up-to-date list of insmod options.
|
||||
|
||||
the bt848/878 (grabber chip) driver
|
||||
|
||||
insmod args:
|
||||
card=n card type, see CARDLIST for a list.
|
||||
tuner=n tuner type, see CARDLIST for a list.
|
||||
radio=0/1 card supports radio
|
||||
pll=0/1/2 pll settings
|
||||
0: don't use PLL
|
||||
1: 28 MHz crystal installed
|
||||
2: 35 MHz crystal installed
|
||||
|
||||
triton1=0/1 for Triton1 (+others) compatibility
|
||||
vsfx=0/1 yet another chipset bug compatibility bit
|
||||
see README.quirks for details on these two.
|
||||
bttv
|
||||
The bt848/878 (grabber chip) driver
|
||||
|
||||
bigendian=n Set the endianness of the gfx framebuffer.
|
||||
Default is native endian.
|
||||
fieldnr=0/1 Count fields. Some TV descrambling software
|
||||
needs this, for others it only generates
|
||||
50 useless IRQs/sec. default is 0 (off).
|
||||
autoload=0/1 autoload helper modules (tuner, audio).
|
||||
default is 1 (on).
|
||||
bttv_verbose=0/1/2 verbose level (at insmod time, while
|
||||
looking at the hardware). default is 1.
|
||||
bttv_debug=0/1 debug messages (for capture).
|
||||
default is 0 (off).
|
||||
irq_debug=0/1 irq handler debug messages.
|
||||
default is 0 (off).
|
||||
gbuffers=2-32 number of capture buffers for mmap'ed capture.
|
||||
default is 4.
|
||||
gbufsize= size of capture buffers. default and
|
||||
maximum value is 0x208000 (~2MB)
|
||||
no_overlay=0 Enable overlay on broken hardware. There
|
||||
are some chipsets (SIS for example) which
|
||||
are known to have problems with the PCI DMA
|
||||
push used by bttv. bttv will disable overlay
|
||||
by default on this hardware to avoid crashes.
|
||||
With this insmod option you can override this.
|
||||
no_overlay=1 Disable overlay. It should be used by broken
|
||||
hardware that doesn't support PCI2PCI direct
|
||||
transfers.
|
||||
automute=0/1 Automatically mutes the sound if there is
|
||||
no TV signal, on by default. You might try
|
||||
to disable this if you have bad input signal
|
||||
quality which leading to unwanted sound
|
||||
dropouts.
|
||||
chroma_agc=0/1 AGC of chroma signal, off by default.
|
||||
adc_crush=0/1 Luminance ADC crush, on by default.
|
||||
i2c_udelay= Allow reduce I2C speed. Default is 5 usecs
|
||||
(meaning 66,67 Kbps). The default is the
|
||||
maximum supported speed by kernel bitbang
|
||||
algorithm. You may use lower numbers, if I2C
|
||||
messages are lost (16 is known to work on
|
||||
all supported cards).
|
||||
insmod args::
|
||||
|
||||
bttv_gpio=0/1
|
||||
gpiomask=
|
||||
audioall=
|
||||
audiomux=
|
||||
See Sound-FAQ for a detailed description.
|
||||
card=n card type, see CARDLIST for a list.
|
||||
tuner=n tuner type, see CARDLIST for a list.
|
||||
radio=0/1 card supports radio
|
||||
pll=0/1/2 pll settings
|
||||
|
||||
0: don't use PLL
|
||||
1: 28 MHz crystal installed
|
||||
2: 35 MHz crystal installed
|
||||
|
||||
triton1=0/1 for Triton1 (+others) compatibility
|
||||
vsfx=0/1 yet another chipset bug compatibility bit
|
||||
see README.quirks for details on these two.
|
||||
|
||||
bigendian=n Set the endianness of the gfx framebuffer.
|
||||
Default is native endian.
|
||||
fieldnr=0/1 Count fields. Some TV descrambling software
|
||||
needs this, for others it only generates
|
||||
50 useless IRQs/sec. default is 0 (off).
|
||||
autoload=0/1 autoload helper modules (tuner, audio).
|
||||
default is 1 (on).
|
||||
bttv_verbose=0/1/2 verbose level (at insmod time, while
|
||||
looking at the hardware). default is 1.
|
||||
bttv_debug=0/1 debug messages (for capture).
|
||||
default is 0 (off).
|
||||
irq_debug=0/1 irq handler debug messages.
|
||||
default is 0 (off).
|
||||
gbuffers=2-32 number of capture buffers for mmap'ed capture.
|
||||
default is 4.
|
||||
gbufsize= size of capture buffers. default and
|
||||
maximum value is 0x208000 (~2MB)
|
||||
no_overlay=0 Enable overlay on broken hardware. There
|
||||
are some chipsets (SIS for example) which
|
||||
are known to have problems with the PCI DMA
|
||||
push used by bttv. bttv will disable overlay
|
||||
by default on this hardware to avoid crashes.
|
||||
With this insmod option you can override this.
|
||||
no_overlay=1 Disable overlay. It should be used by broken
|
||||
hardware that doesn't support PCI2PCI direct
|
||||
transfers.
|
||||
automute=0/1 Automatically mutes the sound if there is
|
||||
no TV signal, on by default. You might try
|
||||
to disable this if you have bad input signal
|
||||
quality which leading to unwanted sound
|
||||
dropouts.
|
||||
chroma_agc=0/1 AGC of chroma signal, off by default.
|
||||
adc_crush=0/1 Luminance ADC crush, on by default.
|
||||
i2c_udelay= Allow reduce I2C speed. Default is 5 usecs
|
||||
(meaning 66,67 Kbps). The default is the
|
||||
maximum supported speed by kernel bitbang
|
||||
algorithm. You may use lower numbers, if I2C
|
||||
messages are lost (16 is known to work on
|
||||
all supported cards).
|
||||
|
||||
bttv_gpio=0/1
|
||||
gpiomask=
|
||||
audioall=
|
||||
audiomux=
|
||||
See Sound-FAQ for a detailed description.
|
||||
|
||||
remap, card, radio and pll accept up to four comma-separated arguments
|
||||
(for multiple boards).
|
||||
|
||||
tuner.o
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
tuner
|
||||
The tuner driver. You need this unless you want to use only
|
||||
with a camera or external tuner ...
|
||||
with a camera or the board doesn't provide analog TV tuning.
|
||||
|
||||
insmod args::
|
||||
|
||||
insmod args:
|
||||
debug=1 print some debug info to the syslog
|
||||
type=n type of the tuner chip. n as follows:
|
||||
see CARDLIST for a complete list.
|
||||
pal=[bdgil] select PAL variant (used for some tuners
|
||||
only, important for the audio carrier).
|
||||
|
||||
tvaudio.o
|
||||
tvaudio
|
||||
Provide a single driver for all simple i2c audio control
|
||||
chips (tda/tea*).
|
||||
|
||||
.. code-block:: none
|
||||
insmod args::
|
||||
|
||||
new, experimental module which is supported to provide a single
|
||||
driver for all simple i2c audio control chips (tda/tea*).
|
||||
|
||||
insmod args:
|
||||
tda8425 = 1 enable/disable the support for the
|
||||
tda9840 = 1 various chips.
|
||||
tda9850 = 1 The tea6300 can't be autodetected and is
|
||||
|
|
@ -200,45 +220,12 @@ tvaudio.o
|
|||
the wrong one.
|
||||
debug = 1 print debug messages
|
||||
|
||||
insmod args for tda9874a:
|
||||
tda9874a_SIF=1/2 select sound IF input pin (1 or 2)
|
||||
(default is pin 1)
|
||||
tda9874a_AMSEL=0/1 auto-mute select for NICAM (default=0)
|
||||
Please read note 3 below!
|
||||
tda9874a_STD=n select TV sound standard (0..8):
|
||||
0 - A2, B/G
|
||||
1 - A2, M (Korea)
|
||||
2 - A2, D/K (1)
|
||||
3 - A2, D/K (2)
|
||||
4 - A2, D/K (3)
|
||||
5 - NICAM, I
|
||||
6 - NICAM, B/G
|
||||
7 - NICAM, D/K (default)
|
||||
8 - NICAM, L
|
||||
|
||||
Note 1: tda9874a supports both tda9874h (old) and tda9874a (new) chips.
|
||||
Note 2: tda9874h/a and tda9875 (which is supported separately by
|
||||
tda9875.o) use the same i2c address so both modules should not be
|
||||
used at the same time.
|
||||
Note 3: Using tda9874a_AMSEL option depends on your TV card design!
|
||||
AMSEL=0: auto-mute will switch between NICAM sound
|
||||
and the sound on 1st carrier (i.e. FM mono or AM).
|
||||
AMSEL=1: auto-mute will switch between NICAM sound
|
||||
and the analog mono input (MONOIN pin).
|
||||
If tda9874a decoder on your card has MONOIN pin not connected, then
|
||||
use only tda9874_AMSEL=0 or don't specify this option at all.
|
||||
For example:
|
||||
card=65 (FlyVideo 2000S) - set AMSEL=1 or AMSEL=0
|
||||
card=72 (Prolink PV-BT878P rev.9B) - set AMSEL=0 only
|
||||
|
||||
msp3400.o
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
msp3400
|
||||
The driver for the msp34xx sound processor chips. If you have a
|
||||
stereo card, you probably want to insmod this one.
|
||||
|
||||
insmod args:
|
||||
insmod args::
|
||||
|
||||
debug=1/2 print some debug info to the syslog,
|
||||
2 is more verbose.
|
||||
simple=1 Use the "short programming" method. Newer
|
||||
|
|
@ -252,40 +239,6 @@ msp3400.o
|
|||
should improve things for french people, the
|
||||
carrier autoscan seems to work with FM only...
|
||||
|
||||
tea6300.o - OBSOLETE (use tvaudio instead)
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
The driver for the tea6300 fader chip. If you have a stereo
|
||||
card and the msp3400.o doesn't work, you might want to try this
|
||||
one. This chip is seen on most STB TV/FM cards (usually from
|
||||
Gateway OEM sold surplus on auction sites).
|
||||
|
||||
insmod args:
|
||||
debug=1 print some debug info to the syslog.
|
||||
|
||||
tda8425.o - OBSOLETE (use tvaudio instead)
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
The driver for the tda8425 fader chip. This driver used to be
|
||||
part of bttv.c, so if your sound used to work but does not
|
||||
anymore, try loading this module.
|
||||
|
||||
insmod args:
|
||||
debug=1 print some debug info to the syslog.
|
||||
|
||||
tda985x.o - OBSOLETE (use tvaudio instead)
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
The driver for the tda9850/55 audio chips.
|
||||
|
||||
insmod args:
|
||||
debug=1 print some debug info to the syslog.
|
||||
chip=9850/9855 set the chip type.
|
||||
|
||||
|
||||
If the box freezes hard with bttv
|
||||
---------------------------------
|
||||
|
||||
|
|
@ -306,15 +259,15 @@ bug. It is very helpful if you can tell where exactly it broke
|
|||
With a hard freeze you probably doesn't find anything in the logfiles.
|
||||
The only way to capture any kernel messages is to hook up a serial
|
||||
console and let some terminal application log the messages. /me uses
|
||||
screen. See Documentation/admin-guide/serial-console.rst for details on setting
|
||||
screen. See :doc:`/admin-guide/serial-console` for details on setting
|
||||
up a serial console.
|
||||
|
||||
Read Documentation/admin-guide/bug-hunting.rst to learn how to get any useful
|
||||
Read :doc:`/admin-guide/bug-hunting` to learn how to get any useful
|
||||
information out of a register+stack dump printed by the kernel on
|
||||
protection faults (so-called "kernel oops").
|
||||
|
||||
If you run into some kind of deadlock, you can try to dump a call trace
|
||||
for each process using sysrq-t (see Documentation/admin-guide/sysrq.rst).
|
||||
for each process using sysrq-t (see :doc:`/admin-guide/sysrq`).
|
||||
This way it is possible to figure where *exactly* some process in "D"
|
||||
state is stuck.
|
||||
|
||||
|
|
@ -443,9 +396,7 @@ Other elements of the tvcards array
|
|||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
If you are trying to make a new card work you might find it useful to
|
||||
know what the other elements in the tvcards array are good for:
|
||||
|
||||
.. code-block:: none
|
||||
know what the other elements in the tvcards array are good for::
|
||||
|
||||
video_inputs - # of video inputs the card has
|
||||
audio_inputs - historical cruft, not used any more.
|
||||
|
|
@ -678,7 +629,9 @@ Typhoon TV card series:
|
|||
~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
These can be CPH, Flyvideo, Pixelview or KNC1 series.
|
||||
|
||||
Typhoon is the brand of Anubis.
|
||||
|
||||
Model 50680 got re-used, some model no. had different contents over time.
|
||||
|
||||
Models:
|
||||
|
|
@ -830,12 +783,13 @@ is wrong. If it doesn't work, send me email.
|
|||
on their server are the full data-sheets, but don't ask how I found it.
|
||||
|
||||
To use the driver I use the following options, the tuner and pll settings might
|
||||
be different in your country
|
||||
be different in your country. You can force it via modprobe parameters.
|
||||
For example::
|
||||
|
||||
insmod videodev
|
||||
insmod i2c scan=1 i2c_debug=0 verbose=0
|
||||
insmod tuner type=1 debug=0
|
||||
insmod bttv pll=1 radio=1 card=17
|
||||
modprobe bttv tuner=1 pll=28 radio=1 card=17
|
||||
|
||||
Sets tuner type 1 (Philips PAL_I), PLL with a 28 MHz crystal, enables
|
||||
FM radio and selects bttv card ID 17 (Leadtek WinView 601).
|
||||
|
||||
|
||||
KNC One
|
||||
|
|
@ -854,15 +808,16 @@ KNC One
|
|||
Provideo
|
||||
~~~~~~~~
|
||||
|
||||
- PV951 or PV-951 (also are sold as:
|
||||
- PV951 or PV-951, now named PV-951T
|
||||
(also are sold as:
|
||||
Boeder TV-FM Video Capture Card,
|
||||
Titanmedia Supervision TV-2400,
|
||||
Provideo PV951 TF,
|
||||
3DeMon PV951,
|
||||
MediaForte TV-Vision PV951,
|
||||
Yoko PV951,
|
||||
Vivanco Tuner Card PCI Art.-Nr.: 68404,
|
||||
) now named PV-951T
|
||||
Vivanco Tuner Card PCI Art.-Nr.: 68404
|
||||
)
|
||||
|
||||
- Surveillance Series:
|
||||
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче