em28xx based intraoral usb camera

[Roberto Mantovani - A&L <rmantovani@xxxxxxxxx>]

Hi to all,

Im'trying to use an intra-oral usb camera produced by Pointnix on Linux.
It's based on an em28xx chipset, this is the output of lsusb:

Bus 001 Device 005: ID eb1a:2860 eMPIA Technology, Inc. 

This is the output of dmesg:

Linux video capture interface: v2.00
em28xx v4l2 driver version 0.1.0 loaded
em28xx new video device (eb1a:2860): 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 = 34
em28xx #0: found i2c device @ 0x4a [saa7113h]
em28xx #0: Your board has no unique USB ID and thus need a hint to be
detected.
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 0x00000000
em28xx #0: Board i2c devicelist hash is 0x1ba50080
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:     card=17 -> PointNix Intra-Oral Camera
em28xx #0: V4L2 device registered as /dev/video0 and /dev/vbi0
em28xx #0: Found Unknown EM2750/28xx video grabber
usbcore: registered new interface driver em28xx
em28xx-audio.c: probing for em28x1 non standard usbaudio
em28xx-audio.c: Copyright (C) 2006 Markus Rechberger
Em28xx: Initialized (Em28xx Audio Extension) extension

As you can see I've created a new card profile in the em28xx driver.

After executing this command:

rmmod em28xx_alsa; rmmod em28xx_dvb; rmmod em28xx; modprobe em28xx
card=17


the dmesg output is :
em28xx v4l2 driver version 0.1.0 loaded
em28xx new video device (eb1a:2860): 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 = 34
em28xx #0: V4L2 device registered as /dev/video0 and /dev/vbi0
em28xx #0: Found PointNix Intra-Oral Camera
usbcore: registered new interface driver em28xx
em28xx-audio.c: probing for em28x1 non standard usbaudio
em28xx-audio.c: Copyright (C) 2006 Markus Rechberger
Em28xx: Initialized (Em28xx Audio Extension) extension

My problem is that I cannot see anything usable from the camera, only a
green colored image.

Could you tell me what parameters I need to know from the manufacturer
of the
intra-oral camera to make it works (resolution, color depth ...) ?


Best Regards,
--
Roberto Mantovani



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