Geniatech/MyGica iGrabber: Difference between revisions

From LinuxTVWiki
Jump to navigation Jump to search
(Created page with "<span style="color:#009000"> ''First, if possible, we would like a good overall image of what the device looks like (Note: do NOT use proprietary images unless you have obtain...")
 
 
(5 intermediate revisions by the same user not shown)
Line 1: Line 1:
<span style="color:#009000"> ''First, if possible, we would like a good overall image of what the device looks like (Note: do NOT use proprietary images unless you have obtained permission to do so). <br>
''Next, provide a brief summary of what the device is and by whom it is provided (include wiki links to the card type and the vendor -- and, ideally, after you have finished editing this page, you should add links from those pages back to this one).'' <br>
''The last introductory piece of information is the all important indication of whether or not the device is supported under Linux. Here's an example:''</span><br>

[[Image:Igrabber_crop.jpg|right|thumb|200px|Overview of the Geniatech/MyGica iGrabber device]]
[[Image:Igrabber_crop.jpg|right|thumb|200px|Overview of the Geniatech/MyGica iGrabber device]]


A USB analog audio and video [[Category:Capture Devices|capture device]] from [[Geniatech]] sold under the MyGica brand.
A USB analog audio and video capture device from [[Geniatech]] sold under the '''MyGica''' brand.


The ATSC 115 is supported under Linux since kernel 2.6.24.
The MyGica iGrabber is supported under Linux since kernel v5.9.


==Overview/Features==
==Overview/Features==
Line 13: Line 9:
* USB 2.0 interface
* USB 2.0 interface
* Inputs: Composite, S-Video and Snapshot button
* Inputs: Composite, S-Video and Snapshot button
* Leds: Power (blue) and Record (red)
⚫
* Based on the Empia EM2860 chip, therefore uses V4L's em28xx driver.
* USB ID 1f4d:1abe
* USB ID 1f4d:1abe


Line 708: Line 704:


==Making it Work==
==Making it Work==
There is basic support for the MyGica iGrabber under Linux since kernel v5.9.
<span style="color:#009000">''Is it supported under Linux? Are there experimental drivers? Does it partially work or identify as another card? (if yes, add this information below)''</span>

Both composite and S-video input work with NTSC source.

The capture button and LED are currently not supported by the em28xx driver, but they were tested and work with the following changes.
diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c
index ba9292e2a587..6644241eae68 100644
--- a/drivers/media/usb/em28xx/em28xx-cards.c
+++ b/drivers/media/usb/em28xx/em28xx-cards.c
@@ -2569,6 +2569,8 @@ const struct em28xx_board em28xx_boards[] = {
.vmux = SAA7115_SVIDEO3,
.amux = EM28XX_AMUX_LINE_IN,
} },
+ .leds = terratec_grabby_leds,
+ .buttons = std_snapshot_button,
},
/* 2040:826d Hauppauge USB QuadHD
* Empia 28274, Max Linear 692 ATSC combo demod/tuner

Additional Kernel Output with the above changes
# dmesg
[11816.067798] em28xx: Registered (Em28xx v4l2 Extension) extension
[11816.088219] em28xx 1-1:1.0: Registering snapshot button...
⚫
[11816.088262] input: em28xx snapshot button as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/input/input27
[11816.088380] em28xx 1-1:1.0: Remote control support is not available for this card.



===Firmware===
===Firmware===
No firmware is required.
<span style="color:#009000">''Is there any firmware specific information for this device? if so, list it here. If your device doesn't require a firmware, simply mention that this is the case.''</span>


===Drivers===
===Drivers===
⚫
* Based on the Empia EM2860 chip, therefore uses V4L's [[Em28xx_devices|em28xx driver]].
<span style="color:#009000">''Discuss the kernel driver modules used by the device here. Provide the details of where the drivers, any patches, and any other necessary tools are available.''</span>


===Sample Kernel Output===
===Sample Kernel Output===
<span style="color:#009000">''Provide the '''relevant''' portion of dmesg here. For example:''</span><br>
# dmesg
# dmesg
[ 9474.897459] usb 1-1: new high-speed USB device number 9 using xhci_hcd
[ 45.569669] saa7130/34: v4l2 driver version 0.2.14 loaded
[ 9475.037843] usb 1-1: config 1 interface 0 altsetting 1 endpoint 0x82 has invalid wMaxPacketSize 0
[ 45.569739] saa7130[0]: found at 0000:04:03.0, rev: 1, irq: 20, latency: 84, mmio: 0xfdcfe000
[ 9475.037855] usb 1-1: config 1 interface 0 altsetting 1 endpoint 0x84 has invalid wMaxPacketSize 0
[ 45.569745] saa7130[0]: subsystem: 185b:c901, board: Compro Videomate DVB-T200 [card=71,autodetected]
[ 9475.037861] usb 1-1: config 1 interface 0 altsetting 2 endpoint 0x84 has invalid wMaxPacketSize 0
[ 45.569753] saa7130[0]: board init: gpio is 843f00
[ 9475.037866] usb 1-1: config 1 interface 0 altsetting 3 endpoint 0x84 has invalid wMaxPacketSize 0
⚫
[ 45.569809] input: saa7134 IR (Compro Videomate DV as /devices/pci0000:00/0000:00:1e.0/0000:04:03.0/input/input7
[ 9475.037871] usb 1-1: config 1 interface 0 altsetting 4 endpoint 0x84 has invalid wMaxPacketSize 0
[ 45.755429] saa7130[0]: i2c eeprom 00: 5b 18 01 c9 54 20 1c 00 43 43 a9 1c 55 d2 b2 92
[ 9475.037875] usb 1-1: config 1 interface 0 altsetting 5 endpoint 0x84 has invalid wMaxPacketSize 0
[ 45.755437] saa7130[0]: i2c eeprom 10: 00 ff 86 0f ff 20 ff ff ff ff ff ff ff ff ff ff
[ 9475.037879] usb 1-1: config 1 interface 0 altsetting 6 endpoint 0x84 has invalid wMaxPacketSize 0
[ 45.755443] saa7130[0]: i2c eeprom 20: 01 40 01 03 03 ff 03 01 08 ff 00 88 ff ff ff ff
[ 9475.037884] usb 1-1: config 1 interface 0 altsetting 7 endpoint 0x84 has invalid wMaxPacketSize 0
[ 45.755449] saa7130[0]: i2c eeprom 30: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 9475.040927] usb 1-1: New USB device found, idVendor=1f4d, idProduct=1abe, bcdDevice= 1.00
[ 45.755454] saa7130[0]: i2c eeprom 40: ff d5 00 c4 86 1e ff ff ff ff ff ff ff ff ff ff
[ 9475.040939] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 45.755460] saa7130[0]: i2c eeprom 50: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff cb
[ 9475.040944] usb 1-1: Product: iGrabber Device
[ 45.755466] saa7130[0]: i2c eeprom 60: 30 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 9475.102247] em28xx 1-1:1.0: New device iGrabber Device @ 480 Mbps (1f4d:1abe, interface 0, class 0)
[ 45.755471] saa7130[0]: i2c eeprom 70: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 9475.102252] em28xx 1-1:1.0: Video interface 0 found: isoc
[ 45.755478] saa7130[0]: Unexpected tuner type info: d5 in eeprom
[ 9475.157431] em28xx 1-1:1.0: chip ID is em2860
[ 45.755532] saa7130[0]: registered device video0 [v4l2]
[ 9475.276912] em28xx 1-1:1.0: EEPROM ID = 1a eb 67 95, EEPROM hash = 0xd1d9abb8
[ 45.755550] saa7130[0]: registered device vbi0
[ 9475.276924] em28xx 1-1:1.0: EEPROM info:
[ 45.873425] saa7134 ALSA driver for DMA sound loaded
[ 9475.276928] em28xx 1-1:1.0: AC97 audio (5 sample rates)
[ 45.873448] saa7130[0]/alsa: saa7130[0] at 0xfdcfe000 irq 20 registered as card -2
[ 9475.276932] em28xx 1-1:1.0: 500mA max power
[ 45.943354] saa7130[0]/dvb: frontend initialization failed
[ 9475.276935] em28xx 1-1:1.0: Table at offset 0x04, strings=0x226a, 0x0000, 0x0000
[ 9475.357425] em28xx 1-1:1.0: Identified as MyGica iGrabber (card=105)
[ 9475.357438] em28xx 1-1:1.0: analog set to isoc mode.
[ 9475.357763] usbcore: registered new interface driver em28xx
[ 9475.377264] em28xx 1-1:1.0: Registering V4L2 extension
[ 9475.814655] saa7115 7-0025: saa7113 found @ 0x4a (1-1:1.0)
[ 9476.667423] em28xx 1-1:1.0: Config register raw data: 0x50
[ 9476.693942] em28xx 1-1:1.0: AC97 vendor ID = 0x83847652
[ 9476.707278] em28xx 1-1:1.0: AC97 features = 0x6a90
[ 9476.707309] em28xx 1-1:1.0: Sigmatel audio processor detected (stac 9752)
[ 9479.341037] em28xx 1-1:1.0: V4L2 video device registered as video2
[ 9479.341047] em28xx 1-1:1.0: V4L2 VBI device registered as vbi0
[ 9479.341057] em28xx 1-1:1.0: V4L2 extension successfully initialized
[ 9479.341062] em28xx: Registered (Em28xx v4l2 Extension) extension


===Remote Control Support===
===Remote Control Support===
N/A
N/A

===An Appropriate Title===


==External Links==
==External Links==
* [https://www.geniatech.com/product/igrabber-live/ Geniatech iGrabber product page]
* [https://www.mygica.com/product/igrabber-live/ MyGica iGrabber product page]


[[Category:Analog USB Devices]][[Category:Capture Devices]][[Category:Hardware]][[Category:USB]]
[[Category:Analog USB Devices]][[Category:Capture Devices]]

Latest revision as of 08:38, 20 April 2021

Overview of the Geniatech/MyGica iGrabber device

A USB analog audio and video capture device from Geniatech sold under the MyGica brand.

The MyGica iGrabber is supported under Linux since kernel v5.9.

Overview/Features

  • USB 2.0 interface
  • Inputs: Composite, S-Video and Snapshot button
  • Leds: Power (blue) and Record (red)
  • USB ID 1f4d:1abe

Components Used

  • Empia EM2860 USB Video Capture Device.
  • Empia EMP202 Dual-Channel AC'97 Codec.
  • NXP SAA7113H Video Input Processor.
  • BL24C02 Serial EEPROM.

Other Images

  • Front view of the MyGica iGrabber board

    Front view of the MyGica iGrabber board

  • Back view of the MyGica iGrabber board

    Back view of the MyGica iGrabber board

Identification

# lsusb -v -d 1f4d:1abe
Bus 001 Device 008: ID 1f4d:1abe G-Tek Electronics Group iGrabber Device
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1f4d G-Tek Electronics Group
  idProduct          0x1abe 
  bcdDevice            1.00
  iManufacturer           0 
  iProduct                1 iGrabber Device
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x022b
    bNumInterfaces          3
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              11
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       1
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              11
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       2
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              11
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0ad4  2x 724 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       3
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              11
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0c00  2x 1024 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       4
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              11
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x1300  3x 768 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       5
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              11
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x135c  3x 860 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       6
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              11
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x13c4  3x 964 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       7
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              11
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x1400  3x 1024 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
      bInterfaceProtocol      0 
      iInterface              0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength       0x0027
        bInCollection           1
        baInterfaceNr(0)        2
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             1
        wTerminalType      0x0603 Line Connector
        bAssocTerminal          0
        bNrChannels             2
        wChannelConfig     0x0003
          Left Front (L)
          Right Front (R)
        iChannelNames           0 
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                 2
        bSourceID               1
        bControlSize            1
        bmaControls(0)       0x03
          Mute Control
          Volume Control
        bmaControls(1)       0x00
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             3
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          0
        bSourceID               2
        iTerminal               0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           3
        bDelay                  1 frames
        wFormatTag         0x0001 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             2
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]            0
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               4
        bRefresh                0
        bSynchAddress           0
        AudioStreaming Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bLockDelayUnits         0 Undefined
          wLockDelay         0x0000
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           3
        bDelay                  1 frames
        wFormatTag         0x0001 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             2
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        48000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x00c4  1x 196 bytes
        bInterval               4
        bRefresh                0
        bSynchAddress           0
        AudioStreaming Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bLockDelayUnits         0 Undefined
          wLockDelay         0x0000
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       2
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           3
        bDelay                  1 frames
        wFormatTag         0x0001 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             2
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        44100
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x00b4  1x 180 bytes
        bInterval               4
        bRefresh                0
        bSynchAddress           0
        AudioStreaming Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bLockDelayUnits         0 Undefined
          wLockDelay         0x0000
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       3
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           3
        bDelay                  1 frames
        wFormatTag         0x0001 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             2
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        32000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0084  1x 132 bytes
        bInterval               4
        bRefresh                0
        bSynchAddress           0
        AudioStreaming Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bLockDelayUnits         0 Undefined
          wLockDelay         0x0000
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       4
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           3
        bDelay                  1 frames
        wFormatTag         0x0001 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             2
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        16000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0044  1x 68 bytes
        bInterval               4
        bRefresh                0
        bSynchAddress           0
        AudioStreaming Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bLockDelayUnits         0 Undefined
          wLockDelay         0x0000
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       5
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           3
        bDelay                  1 frames
        wFormatTag         0x0001 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             2
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]         8000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0024  1x 36 bytes
        bInterval               4
        bRefresh                0
        bSynchAddress           0
        AudioStreaming Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bLockDelayUnits         0 Undefined
          wLockDelay         0x0000


Making it Work

There is basic support for the MyGica iGrabber under Linux since kernel v5.9.

Both composite and S-video input work with NTSC source.

The capture button and LED are currently not supported by the em28xx driver, but they were tested and work with the following changes. 

diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c
index ba9292e2a587..6644241eae68 100644
--- a/drivers/media/usb/em28xx/em28xx-cards.c
+++ b/drivers/media/usb/em28xx/em28xx-cards.c
@@ -2569,6 +2569,8 @@ const struct em28xx_board em28xx_boards[] = {
 			.vmux     = SAA7115_SVIDEO3,
 			.amux     = EM28XX_AMUX_LINE_IN,
 		} },
+		.leds		= terratec_grabby_leds,
+		.buttons	= std_snapshot_button,
 	},
 	/* 2040:826d Hauppauge USB QuadHD
 	 * Empia 28274, Max Linear 692 ATSC combo demod/tuner

Additional Kernel Output with the above changes 

# dmesg
[11816.067798] em28xx: Registered (Em28xx v4l2 Extension) extension
[11816.088219] em28xx 1-1:1.0: Registering snapshot button...
[11816.088262] input: em28xx snapshot button as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/input/input27
[11816.088380] em28xx 1-1:1.0: Remote control support is not available for this card.


Firmware

No firmware is required.

Drivers

  • Based on the Empia EM2860 chip, therefore uses V4L's em28xx driver.

Sample Kernel Output

# dmesg
[ 9474.897459] usb 1-1: new high-speed USB device number 9 using xhci_hcd
[ 9475.037843] usb 1-1: config 1 interface 0 altsetting 1 endpoint 0x82 has invalid wMaxPacketSize 0
[ 9475.037855] usb 1-1: config 1 interface 0 altsetting 1 endpoint 0x84 has invalid wMaxPacketSize 0
[ 9475.037861] usb 1-1: config 1 interface 0 altsetting 2 endpoint 0x84 has invalid wMaxPacketSize 0
[ 9475.037866] usb 1-1: config 1 interface 0 altsetting 3 endpoint 0x84 has invalid wMaxPacketSize 0
[ 9475.037871] usb 1-1: config 1 interface 0 altsetting 4 endpoint 0x84 has invalid wMaxPacketSize 0
[ 9475.037875] usb 1-1: config 1 interface 0 altsetting 5 endpoint 0x84 has invalid wMaxPacketSize 0
[ 9475.037879] usb 1-1: config 1 interface 0 altsetting 6 endpoint 0x84 has invalid wMaxPacketSize 0
[ 9475.037884] usb 1-1: config 1 interface 0 altsetting 7 endpoint 0x84 has invalid wMaxPacketSize 0
[ 9475.040927] usb 1-1: New USB device found, idVendor=1f4d, idProduct=1abe, bcdDevice= 1.00
[ 9475.040939] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 9475.040944] usb 1-1: Product: iGrabber Device
[ 9475.102247] em28xx 1-1:1.0: New device  iGrabber Device @ 480 Mbps (1f4d:1abe, interface 0, class 0)
[ 9475.102252] em28xx 1-1:1.0: Video interface 0 found: isoc
[ 9475.157431] em28xx 1-1:1.0: chip ID is em2860
[ 9475.276912] em28xx 1-1:1.0: EEPROM ID = 1a eb 67 95, EEPROM hash = 0xd1d9abb8
[ 9475.276924] em28xx 1-1:1.0: EEPROM info:
[ 9475.276928] em28xx 1-1:1.0: 	AC97 audio (5 sample rates)
[ 9475.276932] em28xx 1-1:1.0: 	500mA max power
[ 9475.276935] em28xx 1-1:1.0: 	Table at offset 0x04, strings=0x226a, 0x0000, 0x0000
[ 9475.357425] em28xx 1-1:1.0: Identified as MyGica iGrabber (card=105)
[ 9475.357438] em28xx 1-1:1.0: analog set to isoc mode.
[ 9475.357763] usbcore: registered new interface driver em28xx
[ 9475.377264] em28xx 1-1:1.0: Registering V4L2 extension
[ 9475.814655] saa7115 7-0025: saa7113 found @ 0x4a (1-1:1.0)
[ 9476.667423] em28xx 1-1:1.0: Config register raw data: 0x50
[ 9476.693942] em28xx 1-1:1.0: AC97 vendor ID = 0x83847652
[ 9476.707278] em28xx 1-1:1.0: AC97 features = 0x6a90
[ 9476.707309] em28xx 1-1:1.0: Sigmatel audio processor detected (stac 9752)
[ 9479.341037] em28xx 1-1:1.0: V4L2 video device registered as video2
[ 9479.341047] em28xx 1-1:1.0: V4L2 VBI device registered as vbi0
[ 9479.341057] em28xx 1-1:1.0: V4L2 extension successfully initialized
[ 9479.341062] em28xx: Registered (Em28xx v4l2 Extension) extension

Remote Control Support

N/A

External Links

Retrieved from "https://www.linuxtv.org/wiki/index.php?title=Geniatech/MyGica_iGrabber&oldid=36543"