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From: "Thomas G. Schiele" <schiele@frimfram.ch>
To: "linux-media@vger.kernel.org" <linux-media@vger.kernel.org>
Subject: em28xx (card=68), tvp5150: S-Video not working
Date: Sat, 23 May 2020 13:53:14 +0000
Message-ID: <kcis.0622EB4351AB40399987737B98D00397@nuc2> (raw)

To whom it may concern


I am a first time poster to linux-media. I have read about mailing to this list in the wiki of linuxtv.org. Please excuse me if this post is inappropriate.

This is about the USB device that I recently bought new:
  - Model: TerraTec Grabster AV 350 MX
  - Vendor Id/Product Id: 0ccd:0084
  
Tests made:
  - Composite: working (using the composite connector on the device)
  - S-Video: not working (using the S-Video connector on the device)
  - Audio: working (using the two audio connectors on the device)

I am using Linux 5.4.0-31-generic #35-Ubuntu SMP. The program qv4l2 (Qt V4L2 Test Bench) can capture a composite source with Input=Composite (under "Input Settings" in tab "General Settings"), but it can not capture a source with Input=S-Video. I made sure that both the composite and S-Video sources and the device are working using a different operating system and different software.

I opened the device and found the following major components on the PCB (labeled "AV350 V04"):
  - eMPIA EM2860 (USB Video Capture Device)
  - 24C02 (256 X 8 BIT EEPROM)
  - TI TVP5150 (Ultralow-Power NTSC/PAL Video Decoder)
  - eMPIA EMP202 (Single-Chip Dual-Channel AC’97 Audio Codec)
  - 2 times HC4052 (Dual 4-Channel Analog Multiplexer)
  - SKC 14.318
  - SKC 12.000

Below you can find output from dmesg.

I don't know the cause of the above descibed behaviour. Is S-Video functionality not yet implemented or tested? Do I do something wrong? The device has quality chips in comparison to cheaper solutions. So it makes sense to support such a device.

I would like to help, specially with testing. Please advice. 

Thank you.


Regards,
Thomas


---
output from dmesg:
[150869.973867] usb 1-2: new high-speed USB device number 15 using xhci_hcd
[150869.994295] usb 1-2: config 1 interface 0 altsetting 1 endpoint 0x82 has invalid wMaxPacketSize 0
[150869.994298] usb 1-2: config 1 interface 0 altsetting 1 endpoint 0x84 has invalid wMaxPacketSize 0
[150869.994301] usb 1-2: config 1 interface 0 altsetting 2 endpoint 0x84 has invalid wMaxPacketSize 0
[150869.994303] usb 1-2: config 1 interface 0 altsetting 3 endpoint 0x84 has invalid wMaxPacketSize 0
[150869.994305] usb 1-2: config 1 interface 0 altsetting 4 endpoint 0x84 has invalid wMaxPacketSize 0
[150869.994307] usb 1-2: config 1 interface 0 altsetting 5 endpoint 0x84 has invalid wMaxPacketSize 0
[150869.994309] usb 1-2: config 1 interface 0 altsetting 6 endpoint 0x84 has invalid wMaxPacketSize 0
[150869.994311] usb 1-2: config 1 interface 0 altsetting 7 endpoint 0x84 has invalid wMaxPacketSize 0
[150869.997314] usb 1-2: New USB device found, idVendor=0ccd, idProduct=0084, bcdDevice= 1.00
[150869.997317] usb 1-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[150869.997319] usb 1-2: Product: Grabster AV 350
[150869.999059] em28xx 1-2:1.0: New device  Grabster AV 350 @ 480 Mbps (0ccd:0084, interface 0, class 0)
[150869.999061] em28xx 1-2:1.0: Video interface 0 found: isoc
[150870.058119] em28xx 1-2:1.0: chip ID is em2860
[150870.267223] em28xx 1-2:1.0: EEPROM ID = 1a eb 67 95, EEPROM hash = 0x618085a2
[150870.267227] em28xx 1-2:1.0: EEPROM info:
[150870.267230] em28xx 1-2:1.0: AC97 audio (5 sample rates)
[150870.267232] em28xx 1-2:1.0: 500mA max power
[150870.267236] em28xx 1-2:1.0: Table at offset 0x04, strings=0x226a, 0x0000, 0x0000
[150870.358004] em28xx 1-2:1.0: Identified as Terratec AV350 (card=68)
[150870.358010] em28xx 1-2:1.0: analog set to isoc mode.
[150870.358077] em28xx 1-2:1.0: Registering V4L2 extension
[150870.358486] em28xx 1-2:1.1: audio device (0ccd:0084): interface 1, class 1
[150870.430298] tvp5150 7-005c: tvp5150 (4.0) chip found @ 0xb8 (1-2:1.0)
[150870.430300] tvp5150 7-005c: tvp5150am1 detected.
[150873.238176] em28xx 1-2:1.0: Config register raw data: 0x50
[150873.273859] em28xx 1-2:1.0: AC97 vendor ID = 0xffffffff
[150873.289840] em28xx 1-2:1.0: AC97 features = 0x6a90
[150873.289844] em28xx 1-2:1.0: Empia 202 AC97 audio processor detected


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