Kworld 340U PlusTV HD ATSC USB stick

Date: Sun, 17 Feb 2008 00:26:18 -0600
From: Greg McGee <gjmcgee@xxxxxxxxxxxx>
Subject: Kworld 340U PlusTV HD ATSC USB stick

I hope this isn't too long for a first post to this mailing list, myapologies in advance...


Decided to go nuts yesterday, picked this up at Frys on sale for $32 ish.
(Figured I could use some HD goodness to go with my trusty old M179s).

Kworld 340U PlusTV HD ATSC USB stick/ FCCID KW-ATSC 340U

ATSC only (no analog), unencrypted QAM cable, vestigal side band freeair (OTA HD).


USB ID is 1b80:a340

Uses an em2870, apparently (see below).

Tweaked the latest driver set I could find, lazily adding the basicentries to em28xx-card.c so the USB ID would attract the em28xx driver.

(from mecurial repo http://linuxtv.org/hg/v4l-dvb)

(Haven't had this much fun in years, almost like Linux with randomhardware in 1994 again...)


First, with no args (modprobe em28xx)
dmesg says:

usbcore: registered new interface driver em28xx
usb 3-3: new high speed USB device using ehci_hcd and address 20
usb 3-3: configuration #1 chosen from 1 choice
em28xx new video device (1b80:a340): interface 0, class 255
em28xx Doesn't have usb audio class
em28xx #0: Alternate settings: 8
em28xx #0: Alternate setting 0, max size= 0
em28xx #0: Alternate setting 1, max size= 0
em28xx #0: Alternate setting 2, max size= 1448
em28xx #0: Alternate setting 3, max size= 2048
em28xx #0: Alternate setting 4, max size= 2304
em28xx #0: Alternate setting 5, max size= 2580
em28xx #0: Alternate setting 6, max size= 2892
em28xx #0: Alternate setting 7, max size= 3072
em28xx #0: em28xx chip ID = 35
Chip ID is not zero. It is not a TEA5767
tuner' 2-0060: chip found @ 0xc0 (em28xx #0)
em28xx #0: i2c eeprom 00: 1a eb 67 95 80 1b 40 a3 c0 13 6b 10 6a 22 00 00
em28xx #0: i2c eeprom 10: 00 00 04 57 00 0d 00 00 00 00 00 00 00 00 00 00
em28xx #0: i2c eeprom 20: 44 00 00 00 f0 10 01 00 00 00 00 00 5b 1c c0 00
em28xx #0: i2c eeprom 30: 00 00 20 40 20 80 02 20 01 01 00 00 00 00 00 00
em28xx #0: i2c eeprom 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
em28xx #0: i2c eeprom 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
em28xx #0: i2c eeprom 60: 00 00 00 00 00 00 00 00 00 00 22 03 55 00 53 00
em28xx #0: i2c eeprom 70: 42 00 20 00 32 00 38 00 37 00 30 00 20 00 44 00
em28xx #0: i2c eeprom 80: 65 00 76 00 69 00 63 00 65 00 00 00 00 00 00 00
em28xx #0: i2c eeprom 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
em28xx #0: i2c eeprom a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
em28xx #0: i2c eeprom b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
em28xx #0: i2c eeprom c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
em28xx #0: i2c eeprom d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
em28xx #0: i2c eeprom e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
em28xx #0: i2c eeprom f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
EEPROM ID= 0x9567eb1a, hash = 0x2888a312
Vendor/Product ID= 1b80:a340
No audio on board.
500mA max power
Table at 0x04, strings=0x226a, 0x0000, 0x0000
em28xx #0: found i2c device @ 0x1c [???]
em28xx #0: found i2c device @ 0xa0 [eeprom]
em28xx #0: found i2c device @ 0xc0 [tuner (analog)]

em28xx #0: Your board has no unique USB ID and thus need a hint to bedetected.

em28xx #0: You may try to use card=<n> insmod option to workaround that.
em28xx #0: Please send an email with this log to:
em28xx #0:      V4L Mailing List <video4linux-list@xxxxxxxxxx>
em28xx #0: Board eeprom hash is 0x2888a312
em28xx #0: Board i2c devicelist hash is 0x47800e80
em28xx #0: Here is a list of valid choices for the card=<n> insmod option:
em28xx #0:     card=0 -> Unknown EM2800 video grabber
em28xx #0:     card=1 -> Unknown EM2750/28xx video grabber
em28xx #0:     card=2 -> Terratec Cinergy 250 USB
em28xx #0:     card=3 -> Pinnacle PCTV USB 2
em28xx #0:     card=4 -> Hauppauge WinTV USB 2
em28xx #0:     card=5 -> MSI VOX USB 2.0
em28xx #0:     card=6 -> Terratec Cinergy 200 USB
em28xx #0:     card=7 -> Leadtek Winfast USB II
em28xx #0:     card=8 -> Kworld USB2800
em28xx #0:     card=9 -> Pinnacle Dazzle DVC 90/DVC 100
em28xx #0:     card=10 -> Hauppauge WinTV HVR 900
em28xx #0:     card=11 -> Terratec Hybrid XS
em28xx #0:     card=12 -> Kworld PVR TV 2800 RF
em28xx #0:     card=13 -> Terratec Prodigy XS
em28xx #0:     card=14 -> Pixelview Prolink PlayTV USB 2.0
em28xx #0:     card=15 -> V-Gear PocketTV
em28xx #0:     card=16 -> Hauppauge WinTV HVR 950
em28xx #0: V4L2 device registered as /dev/video2 and /dev/vbi2
em28xx #0: Found Unknown EM2750/28xx video grabber
em28xx-audio.c: probing for em28x1 non standard usbaudio
em28xx-audio.c: Copyright (C) 2006 Markus Rechberger
Em28xx: Initialized (Em28xx Audio Extension) extension

Then loaded as "modprobe em28xx card=8" here (lied to it, other IDattempts were no more informative)


dmesg says:
usbcore: registered new interface driver em28xx
usb 3-3: new high speed USB device using ehci_hcd and address 18
usb 3-3: configuration #1 chosen from 1 choice
em28xx new video device (1b80:a340): interface 0, class 255
em28xx Doesn't have usb audio class
em28xx #0: Alternate settings: 8
em28xx #0: Alternate setting 0, max size= 0
em28xx #0: Alternate setting 1, max size= 0
em28xx #0: Alternate setting 2, max size= 1448
em28xx #0: Alternate setting 3, max size= 2048
em28xx #0: Alternate setting 4, max size= 2304
em28xx #0: Alternate setting 5, max size= 2580
em28xx #0: Alternate setting 6, max size= 2892
em28xx #0: Alternate setting 7, max size= 3072
em28xx #0: em28xx chip ID = 35
em28xx #0: V4L2 device registered as /dev/video2 and /dev/vbi2
em28xx #0: Found Kworld USB2800
em28xx-audio.c: probing for em28x1 non standard usbaudio
em28xx-audio.c: Copyright (C) 2006 Markus Rechberger
Em28xx: Initialized (Em28xx Audio Extension) extension


It always finds the audio, at least

I haven't programmed in years (wasn't good to begin with) but I willgladly hack on this with some direction.

The windows driver CD had the following possibly useful info in the inffile:%USB2870.DeviceDesc.OEM4% = USB2870,USB\VID_1B80&PID_A340 ; HybridATSC <MXL5003s>


The included rom is named merlinC.rom.

The driver CD has a phillips tuner driver on it, saa713x, but looksquite generic, not specific to this card, believe that would be foranalog which this card doesn't have.



FWIW, lsusb says:

lsusb -v -d 1b80:a340

Bus 003 Device 020: ID 1b80:a340
Device Descriptor:
 bLength                18
 bDescriptorType         1
 bcdUSB               2.00
 bDeviceClass            0 (Defined at Interface level)
 bDeviceSubClass         0
 bDeviceProtocol         0
 bMaxPacketSize0        64
 idVendor           0x1b80
 idProduct          0xa340
 bcdDevice            1.00
 iManufacturer           0
 iProduct                1 USB 2870 Device
 iSerial                 0
 bNumConfigurations      1
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength          249
   bNumInterfaces          1
   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     0x02f0  1x 752 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     0x02f0  1x 752 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     0x02f0  1x 752 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     0x02f0  1x 752 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     0x02f0  1x 752 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     0x02f0  1x 752 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     0x02f0  1x 752 bytes
       bInterval               1
Device Qualifier (for other device speed):
 bLength                10
 bDescriptorType         6
 bcdUSB               2.00
 bDeviceClass            0 (Defined at Interface level)
 bDeviceSubClass         0
 bDeviceProtocol         0
 bMaxPacketSize0        64
 bNumConfigurations      1
Device Status:     0x0000
 (Bus Powered)

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Kworld 340U PlusTV HD ATSC USB stick