On Sun, 12 Jul 2009 23:33:06 +0200, hermann pitton
<hermann-pitton@xxxxxxxx> wrote:
Hi Samuel,
Am Sonntag, den 12.07.2009, 13:30 +0200 schrieb Samuel Rakitnican:
As the card=139 (Compro Videomate T750)
DVB: Not working, not implemented
Analog: Not working
Audio In: ? (my T750F has additional connector ?)
if amux LINE2 doesn't work it is usually LINE1.
If both don't work, there is a external gpio controlled switch/mux chip.
Default is loop through for external audio in.
Means, if the saa7134 driver is unloaded, should be passed through to
audio out. If not, there is such a mux chip involved.
[snip]
Well, I haven't managed to get sound from Audio In connector, it's
possible however that I'm doing something wrong. I tried selecting in
tvtime both Composite and S-Video, and I've tried using SoX:
console$> ls /dev/dsp*
dsp dsp1
console$> sox -c 2 -s -r 32000 -t ossdsp /dev/dsp1 -t ossdsp -r 32000
/dev/dsp &
for both .amux = LINE1 and LINE2 in saa7134-cards.c source file.
RegSpy log:
I have used RegSpy that comes with DScaler version 4.1.15. I'm hoping that
they are of some use for both Analog television and Audio In.
I have found out values crucial to changing inputs for both audio and
video. Note that SAA7134_GPIO_GPSTATUS keeps changing all the time between
84ff00 and 94bf00 nevertheless of the device status.
I have used VirtualDub (v1.7.7) as capturing application because it gives
more control on input selecting (I can change audio input, not depending
on video). From that I manage to distinguish values changing between video
and audio.
The crucial value for video seems to be SAA7134_ANALOG_IN_CTRL1 while for
audio seems to be values SAA7133_AUDIO_CLOCK_NOMINAL and
SAA7133_PLL_CONTROL.
Changes: State 0 -> State 1: *****************************(Switch: Analog
TV -> Composite)
SAA7134_GPIO_GPSTATUS: 0094ff00 -> 0494ff00 (-----0-- --------
-------- --------)
SAA7134_ANALOG_IN_CTRL1: 83 -> 81 (------1-)
SAA7133_AUDIO_CLOCK_NOMINAL: 03187de7 -> 43187de7 (-0------ --------
-------- --------)
SAA7133_PLL_CONTROL: 03 -> 43 (-0------)
Changes: State 1 -> State 2: *****************************(Switch:
Composite -> S-Video)
SAA7134_GPIO_GPSTATUS: 0494ff00 -> 0284ff00 (-----10- ---1----
-------- --------)
SAA7134_ANALOG_IN_CTRL1: 81 -> 88 (----0--1)
Changes: State 2 -> State 3: ***(Switch: Audio Source -> Audio Tuner
(Still in S-Video mode))
SAA7134_GPIO_GPSTATUS: 0284ff00 -> 0294ff00 (-------- ---0----
-------- --------)
SAA7133_AUDIO_CLOCK_NOMINAL: 43187de7 -> 03187de7 (-1------ --------
-------- --------) (same as 0)
SAA7133_PLL_CONTROL: 43 -> 03
(-1------) (same as 0)
Changes: State 3 -> State 4: ******(Switch: Audio Source -> Audio Line
(Still in S-Video mode))
SAA7134_GPIO_GPSTATUS: 0294ff00 -> 0484ff00 (-----01- ---1----
-------- --------)
SAA7133_AUDIO_CLOCK_NOMINAL: 03187de7 -> 43187de7 (-0------ --------
-------- --------) (same as 1, 2)
SAA7133_PLL_CONTROL: 03 -> 43
(-0------) (same as 1, 2)
(full log: http://pastebin.com/f5f8e6184)
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