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gspca_sunplus problem: more than one device is created

DISCUSSION Németh Márton 4 participants 7 messages Jan 10, 2010 – Jan 11, 2010 Media (V4L/DVB)

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Németh Márton

author
#0 lore raw

Hi,

I tried the gspca_sunplus driver from http://linuxtv.org/hg/~jfrancois/gspca/
rev 13915 on top of Linux kernel 2.6.32. When I plug the Trust 610 LCD PowerC@m Zoom device in webcam mode (0x06d6:0x0031) then two devices are created: /dev/video0 and /dev/video1:

[31636.528184] usb 3-2: new full speed USB device using uhci_hcd and address 5
[31636.740722] usb 3-2: New USB device found, idVendor=06d6, idProduct=0031
[31636.740744] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[31636.740760] usb 3-2: Product: Trust 610 LCD POWERC@M ZOOM
[31636.740772] usb 3-2: Manufacturer: Trust
[31636.744229] usb 3-2: configuration #1 chosen from 1 choice
[31636.747584] gspca: probing 06d6:0031
[31636.760176] gspca: video0 created
[31636.760643] gspca: probing 06d6:0031
[31636.772063] gspca: video1 created

The /dev/video0 is working correctly but the /dev/video1 just causes error:

$ ./svv -d /dev/video1
raw pixfmt: JPEG 464x480
pixfmt: RGB3 464x480
mmap method
VIDIOC_STREAMON error 5, Input/output error

Here is the USB descriptor of the device:

Trust 610 LCD POWERC@M ZOOM

Manufacturer: Trust
Speed: 12Mb/s (full)
USB Version:  1.00
Device Class: 00(>ifc )
Device Subclass: 00
Device Protocol: 00
Maximum Default Endpoint Size: 8
Number of Configurations: 1
Vendor Id: 06d6
Product Id: 0031
Revision Number:  1.00

Config Number: 1
Number of Interfaces: 2
Attributes: 80
MaxPower Needed: 500mA

Interface Number: 0
Name: sunplus
Alternate Number: 0
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 0
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 1
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 128
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 2
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 384
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 3
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 512
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 4
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 640
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 5
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 768
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 6
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 896
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 7
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 1023
Interval: 1ms

Interface Number: 1
Name: sunplus
Alternate Number: 0
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 3

Endpoint Address: 82
Direction: in
Attribute: 2
Type: Bulk
Max Packet Size: 64
Interval: 0ms

Endpoint Address: 03
Direction: out
Attribute: 2
Type: Bulk
Max Packet Size: 64
Interval: 0ms

Endpoint Address: 84
Direction: in
Attribute: 3
Type: Int.
Max Packet Size: 1
Interval: 1ms

Regards,

Márton Németh

#1 lore raw

Did that happen with the included version on the kernel?. The kernel is calling the probe for the isoch and the bulk, i really dont have a sunplus webcam to test, and ignore the older behavior, that's why i am asking.

Best Regards

2010/1/10 Németh Márton <[email protected]>:

Quoted 202 lines

Hi,

I tried the gspca_sunplus driver from http://linuxtv.org/hg/~jfrancois/gspca/
rev 13915 on top of Linux kernel 2.6.32. When I plug the Trust 610 LCD PowerC@m Zoom device in webcam mode (0x06d6:0x0031) then two devices are created: /dev/video0 and /dev/video1:

[31636.528184] usb 3-2: new full speed USB device using uhci_hcd and address 5
[31636.740722] usb 3-2: New USB device found, idVendor=06d6, idProduct=0031
[31636.740744] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[31636.740760] usb 3-2: Product: Trust 610 LCD POWERC@M ZOOM
[31636.740772] usb 3-2: Manufacturer: Trust
[31636.744229] usb 3-2: configuration #1 chosen from 1 choice
[31636.747584] gspca: probing 06d6:0031
[31636.760176] gspca: video0 created
[31636.760643] gspca: probing 06d6:0031
[31636.772063] gspca: video1 created

The /dev/video0 is working correctly but the /dev/video1 just causes error:

$ ./svv -d /dev/video1
raw pixfmt: JPEG 464x480
pixfmt: RGB3 464x480
mmap method
VIDIOC_STREAMON error 5, Input/output error

Here is the USB descriptor of the device:

Trust 610 LCD POWERC@M ZOOM
Manufacturer: Trust
Speed: 12Mb/s (full)
USB Version:  1.00
Device Class: 00(>ifc )
Device Subclass: 00
Device Protocol: 00
Maximum Default Endpoint Size: 8
Number of Configurations: 1
Vendor Id: 06d6
Product Id: 0031
Revision Number:  1.00

Config Number: 1
       Number of Interfaces: 2
       Attributes: 80
       MaxPower Needed: 500mA

       Interface Number: 0
               Name: sunplus
               Alternate Number: 0
               Class: ff(vend.)
               Sub Class: 00
               Protocol: 00
               Number of Endpoints: 1

                       Endpoint Address: 81
                       Direction: in
                       Attribute: 1
                       Type: Isoc
                       Max Packet Size: 0
                       Interval: 1ms

       Interface Number: 0
               Name: sunplus
               Alternate Number: 1
               Class: ff(vend.)
               Sub Class: 00
               Protocol: 00
               Number of Endpoints: 1

                       Endpoint Address: 81
                       Direction: in
                       Attribute: 1
                       Type: Isoc
                       Max Packet Size: 128
                       Interval: 1ms

       Interface Number: 0
               Name: sunplus
               Alternate Number: 2
               Class: ff(vend.)
               Sub Class: 00
               Protocol: 00
               Number of Endpoints: 1

                       Endpoint Address: 81
                       Direction: in
                       Attribute: 1
                       Type: Isoc
                       Max Packet Size: 384
                       Interval: 1ms

       Interface Number: 0
               Name: sunplus
               Alternate Number: 3
               Class: ff(vend.)
               Sub Class: 00
               Protocol: 00
               Number of Endpoints: 1

                       Endpoint Address: 81
                       Direction: in
                       Attribute: 1
                       Type: Isoc
                       Max Packet Size: 512
                       Interval: 1ms

       Interface Number: 0
               Name: sunplus
               Alternate Number: 4
               Class: ff(vend.)
               Sub Class: 00
               Protocol: 00
               Number of Endpoints: 1

                       Endpoint Address: 81
                       Direction: in
                       Attribute: 1
                       Type: Isoc
                       Max Packet Size: 640
                       Interval: 1ms

       Interface Number: 0
               Name: sunplus
               Alternate Number: 5
               Class: ff(vend.)
               Sub Class: 00
               Protocol: 00
               Number of Endpoints: 1

                       Endpoint Address: 81
                       Direction: in
                       Attribute: 1
                       Type: Isoc
                       Max Packet Size: 768
                       Interval: 1ms

       Interface Number: 0
               Name: sunplus
               Alternate Number: 6
               Class: ff(vend.)
               Sub Class: 00
               Protocol: 00
               Number of Endpoints: 1

                       Endpoint Address: 81
                       Direction: in
                       Attribute: 1
                       Type: Isoc
                       Max Packet Size: 896
                       Interval: 1ms

       Interface Number: 0
               Name: sunplus
               Alternate Number: 7
               Class: ff(vend.)
               Sub Class: 00
               Protocol: 00
               Number of Endpoints: 1

                       Endpoint Address: 81
                       Direction: in
                       Attribute: 1
                       Type: Isoc
                       Max Packet Size: 1023
                       Interval: 1ms

       Interface Number: 1
               Name: sunplus
               Alternate Number: 0
               Class: ff(vend.)
               Sub Class: 00
               Protocol: 00
               Number of Endpoints: 3

                       Endpoint Address: 82
                       Direction: in
                       Attribute: 2
                       Type: Bulk
                       Max Packet Size: 64
                       Interval: 0ms

                       Endpoint Address: 03
                       Direction: out
                       Attribute: 2
                       Type: Bulk
                       Max Packet Size: 64
                       Interval: 0ms

                       Endpoint Address: 84
                       Direction: in
                       Attribute: 3
                       Type: Int.
                       Max Packet Size: 1
                       Interval: 1ms

Regards,

       Márton Németh
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author
#2 lore raw
Quoted 4 lines · leandro Costantino

Did that happen with the included version on the kernel?. The kernel is calling the probe for the isoch and the bulk, i really dont have a sunplus webcam to test, and ignore the older behavior, that's why i am asking.

I tested with 2.6.33-rc2 on a Clevo D4J model D410J laptop. There only one device is created. Not counting the circular locking that version is working properly:

[  280.578560] usb 3-1: new full speed USB device using uhci_hcd and address 2
[  281.177675] Linux video capture interface: v2.00
[  281.229464] gspca: main v2.8.0 registered
[  281.260399] gspca: probing 06d6:0031
[  281.286724] gspca: video0 created
[  281.286909] gspca: probing 06d6:0031
[  281.286914] gspca: intf != 0
[  281.295106] usbcore: registered new interface driver sunplus
[  281.295122] sunplus: registered
[  581.086743]
[  581.086753] =======================================================
[  581.086770] [ INFO: possible circular locking dependency detected ]
[  581.086783] 2.6.33-rc2 #1
[  581.086790] -------------------------------------------------------
[  581.086800] svv/3409 is trying to acquire lock:
[  581.086811]  (sysfs_mutex){+.+.+.}, at: [<c03338e3>] sysfs_get_dirent+0x23/0xe0
[  581.086846]
[  581.086849] but task is already holding lock:
[  581.086858]  (&gspca_dev->usb_lock){+.+...}, at: [<f80f7019>] gspca_init_transfer+0x29/0x840 [gspca_main]
[  581.086888]
[  581.086891] which lock already depends on the new lock.
[  581.086895]
[  581.086903]
[  581.086905] the existing dependency chain (in reverse order) is:
[  581.086915]
[  581.086917] -> #3 (&gspca_dev->usb_lock){+.+...}:
[  581.086935]        [<c01bd1da>] validate_chain+0x12ea/0x1e40
[  581.086953]        [<c01be064>] __lock_acquire+0x334/0x15a0
[  581.086968]        [<c01bf39a>] lock_acquire+0xca/0x220
[  581.086982]        [<c0649d9a>] mutex_lock_interruptible_nested+0xaa/0xa20
[  581.087002]        [<f80f7019>] gspca_init_transfer+0x29/0x840 [gspca_main]
[  581.087020]        [<f80f79ad>] vidioc_streamon+0xfd/0x180 [gspca_main]
[  581.087037]        [<f80e6abc>] __video_do_ioctl+0x29ec/0x71c0 [videodev]
[  581.087057]        [<f80eb36d>] video_ioctl2+0xdd/0x980 [videodev]
[  581.087074]        [<f80e22e7>] v4l2_unlocked_ioctl+0x37/0x70 [videodev]
[  581.087091]        [<c02bd6ed>] vfs_ioctl+0x3d/0x130
[  581.087109]        [<c02bda60>] do_vfs_ioctl+0x80/0xb10
[  581.087111]        [<c02be539>] sys_ioctl+0x49/0xc0
[  581.087111]        [<c010484c>] sysenter_do_call+0x12/0x32
[  581.087111]
[  581.087111] -> #2 (&gspca_dev->queue_lock){+.+.+.}:
[  581.087111]        [<c01bd1da>] validate_chain+0x12ea/0x1e40
[  581.087111]        [<c01be064>] __lock_acquire+0x334/0x15a0
[  581.087111]        [<c01bf39a>] lock_acquire+0xca/0x220
[  581.087111]        [<c0649d9a>] mutex_lock_interruptible_nested+0xaa/0xa20
[  581.087111]        [<f80fa4ad>] dev_mmap+0x4d/0x3e0 [gspca_main]
[  581.087111]        [<f80e238a>] v4l2_mmap+0x6a/0x80 [videodev]
[  581.087111]        [<c027b234>] mmap_region+0x7a4/0x890
[  581.087111]        [<c027b8aa>] do_mmap_pgoff+0x58a/0x5c0
[  581.087111]        [<c0267296>] sys_mmap_pgoff+0xf6/0x240
[  581.087111]        [<c010484c>] sysenter_do_call+0x12/0x32
[  581.087111]
[  581.087111] -> #1 (&mm->mmap_sem){++++++}:
[  581.087111]        [<c01bd1da>] validate_chain+0x12ea/0x1e40
[  581.087111]        [<c01be064>] __lock_acquire+0x334/0x15a0
[  581.087111]        [<c01bf39a>] lock_acquire+0xca/0x220
[  581.087111]        [<c026ccef>] might_fault+0xdf/0x120
[  581.087111]        [<c0427670>] copy_to_user+0x60/0x1c0
[  581.087111]        [<c02bf0cf>] filldir64+0x17f/0x210
[  581.087111]        [<c03334b4>] sysfs_readdir+0x174/0x320
[  581.087111]        [<c02bf5fc>] vfs_readdir+0xec/0x130
[  581.087111]        [<c02bf6c7>] sys_getdents64+0x87/0x150
[  581.087111]        [<c010484c>] sysenter_do_call+0x12/0x32
[  581.087111]
[  581.087111] -> #0 (sysfs_mutex){+.+.+.}:
[  581.087111]        [<c01bdb3a>] validate_chain+0x1c4a/0x1e40
[  581.087111]        [<c01be064>] __lock_acquire+0x334/0x15a0
[  581.087111]        [<c01bf39a>] lock_acquire+0xca/0x220
[  581.087111]        [<c064b210>] mutex_lock_nested+0xa0/0x820
[  581.087111]        [<c03338e3>] sysfs_get_dirent+0x23/0xe0
[  581.087111]        [<c0337220>] sysfs_remove_group+0x30/0x220
[  581.087111]        [<c050e5be>] dpm_sysfs_remove+0x1e/0x30
[  581.087111]        [<c0501711>] device_del+0x71/0x310
[  581.087111]        [<c05019c9>] device_unregister+0x19/0x40
[  581.087111]        [<f899d1c1>] usb_remove_ep_devs+0x31/0x50 [usbcore]
[  581.087111]        [<f898fa13>] remove_intf_ep_devs+0x43/0xa0 [usbcore]
[  581.087111]        [<f8991c83>] usb_set_interface+0x1e3/0x430 [usbcore]
[  581.087111]        [<f80f6f33>] get_ep+0x293/0x350 [gspca_main]
[  581.087111]        [<f80f70c8>] gspca_init_transfer+0xd8/0x840 [gspca_main]
[  581.087111]        [<f80f79ad>] vidioc_streamon+0xfd/0x180 [gspca_main]
[  581.087111]        [<f80e6abc>] __video_do_ioctl+0x29ec/0x71c0 [videodev]
[  581.087111]        [<f80eb36d>] video_ioctl2+0xdd/0x980 [videodev]
[  581.087111]        [<f80e22e7>] v4l2_unlocked_ioctl+0x37/0x70 [videodev]
[  581.087111]        [<c02bd6ed>] vfs_ioctl+0x3d/0x130
[  581.087111]        [<c02bda60>] do_vfs_ioctl+0x80/0xb10
[  581.087111]        [<c02be539>] sys_ioctl+0x49/0xc0
[  581.087111]        [<c010484c>] sysenter_do_call+0x12/0x32
[  581.087111]
[  581.087111] other info that might help us debug this:
[  581.087111]
[  581.087111] 2 locks held by svv/3409:
[  581.087111]  #0:  (&gspca_dev->queue_lock){+.+.+.}, at: [<f80f78e7>] vidioc_streamon+0x37/0x180 [gspca_main]
[  581.087111]  #1:  (&gspca_dev->usb_lock){+.+...}, at: [<f80f7019>] gspca_init_transfer+0x29/0x840 [gspca_main]
[  581.087111]
[  581.087111] stack backtrace:
[  581.087111] Pid: 3409, comm: svv Not tainted 2.6.33-rc2 #1
[  581.087111] Call Trace:
[  581.087111]  [<c06473f8>] ? printk+0x34/0x54
[  581.087111]  [<c01bb456>] print_circular_bug+0x196/0x1b0
[  581.087111]  [<c01bdb3a>] validate_chain+0x1c4a/0x1e40
[  581.087111]  [<c01b7638>] ? save_trace+0x48/0x150
[  581.087111]  [<c050eab0>] ? device_pm_remove+0x20/0x60
[  581.087111]  [<c01be064>] __lock_acquire+0x334/0x15a0
[  581.087111]  [<c01be064>] ? __lock_acquire+0x334/0x15a0
[  581.087111]  [<c01bf39a>] lock_acquire+0xca/0x220
[  581.087111]  [<c03338e3>] ? sysfs_get_dirent+0x23/0xe0
[  581.087111]  [<c03338e3>] ? sysfs_get_dirent+0x23/0xe0
[  581.087111]  [<c064b210>] mutex_lock_nested+0xa0/0x820
[  581.087111]  [<c03338e3>] ? sysfs_get_dirent+0x23/0xe0
[  581.087111]  [<c01b96fb>] ? mark_held_locks+0x9b/0xe0
[  581.087111]  [<c03338e3>] sysfs_get_dirent+0x23/0xe0
[  581.087111]  [<c0337220>] sysfs_remove_group+0x30/0x220
[  581.087111]  [<c01b9f37>] ? trace_hardirqs_on+0x27/0x40
[  581.087111]  [<c050e5be>] dpm_sysfs_remove+0x1e/0x30
[  581.087111]  [<c0501711>] device_del+0x71/0x310
[  581.087111]  [<c05019c9>] device_unregister+0x19/0x40
[  581.087111]  [<f899d1c1>] usb_remove_ep_devs+0x31/0x50 [usbcore]
[  581.087111]  [<f898fa13>] remove_intf_ep_devs+0x43/0xa0 [usbcore]
[  581.087111]  [<f8991c83>] usb_set_interface+0x1e3/0x430 [usbcore]
[  581.087111]  [<f80f6f33>] get_ep+0x293/0x350 [gspca_main]
[  581.087111]  [<c064a6be>] ? mutex_lock_interruptible_nested+0x9ce/0xa20
[  581.087111]  [<f80f7019>] ? gspca_init_transfer+0x29/0x840 [gspca_main]
[  581.087111]  [<f80f70c8>] gspca_init_transfer+0xd8/0x840 [gspca_main]
[  581.087111]  [<f80f78e7>] ? vidioc_streamon+0x37/0x180 [gspca_main]
[  581.087111]  [<f80f78e7>] ? vidioc_streamon+0x37/0x180 [gspca_main]
[  581.087111]  [<f80f79ad>] vidioc_streamon+0xfd/0x180 [gspca_main]
[  581.087111]  [<f80e6abc>] __video_do_ioctl+0x29ec/0x71c0 [videodev]
[  581.087111]  [<c064ee8f>] ? _raw_spin_unlock_irq+0x8f/0x100
[  581.087111]  [<c01be064>] ? __lock_acquire+0x334/0x15a0
[  581.087111]  [<c01bf7c0>] ? lock_release_non_nested+0xc0/0x550
[  581.087111]  [<c026ccb0>] ? might_fault+0xa0/0x120
[  581.087111]  [<c026ccb0>] ? might_fault+0xa0/0x120
[  581.087111]  [<c026ccb0>] ? might_fault+0xa0/0x120
[  581.087111]  [<c026cd12>] ? might_fault+0x102/0x120
[  581.087111]  [<c026ccb0>] ? might_fault+0xa0/0x120
[  581.087111]  [<c0427491>] ? _copy_from_user+0x51/0x1d0
[  581.087111]  [<f80eb36d>] video_ioctl2+0xdd/0x980 [videodev]
[  581.087111]  [<c0149199>] ? __wake_up+0x29/0x90
[  581.087111]  [<c064f003>] ? _raw_spin_unlock_irqrestore+0x103/0x150
[  581.087111]  [<c01b9e12>] ? trace_hardirqs_on_caller+0x312/0x410
[  581.087111]  [<c01b9f37>] ? trace_hardirqs_on+0x27/0x40
[  581.087111]  [<f80eb290>] ? video_ioctl2+0x0/0x980 [videodev]
[  581.087111]  [<f80e22e7>] v4l2_unlocked_ioctl+0x37/0x70 [videodev]
[  581.087111]  [<f80e22b0>] ? v4l2_unlocked_ioctl+0x0/0x70 [videodev]
[  581.087111]  [<c02bd6ed>] vfs_ioctl+0x3d/0x130
[  581.087111]  [<c01b9f37>] ? trace_hardirqs_on+0x27/0x40
[  581.087111]  [<c02bda60>] do_vfs_ioctl+0x80/0xb10
[  581.087111]  [<c04cde27>] ? tty_write+0x2a7/0x490
[  581.087111]  [<c02a22a7>] ? vfs_write+0x177/0x260
[  581.087111]  [<c010487b>] ? sysenter_exit+0xf/0x16
[  581.087111]  [<c02be539>] sys_ioctl+0x49/0xc0
[  581.087111]  [<c010484c>] sysenter_do_call+0x12/0x32

Regards,

Márton Németh

Quoted 198 lines

2010/1/10 Németh Márton <[email protected]>:

Quoted 197 lines

Hi,

I tried the gspca_sunplus driver from http://linuxtv.org/hg/~jfrancois/gspca/
rev 13915 on top of Linux kernel 2.6.32. When I plug the Trust 610 LCD PowerC@m Zoom device in webcam mode (0x06d6:0x0031) then two devices are created: /dev/video0 and /dev/video1:

[31636.528184] usb 3-2: new full speed USB device using uhci_hcd and address 5
[31636.740722] usb 3-2: New USB device found, idVendor=06d6, idProduct=0031
[31636.740744] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[31636.740760] usb 3-2: Product: Trust 610 LCD POWERC@M ZOOM
[31636.740772] usb 3-2: Manufacturer: Trust
[31636.744229] usb 3-2: configuration #1 chosen from 1 choice
[31636.747584] gspca: probing 06d6:0031
[31636.760176] gspca: video0 created
[31636.760643] gspca: probing 06d6:0031
[31636.772063] gspca: video1 created

The /dev/video0 is working correctly but the /dev/video1 just causes error:

$ ./svv -d /dev/video1
raw pixfmt: JPEG 464x480
pixfmt: RGB3 464x480
mmap method
VIDIOC_STREAMON error 5, Input/output error

Here is the USB descriptor of the device:

Trust 610 LCD POWERC@M ZOOM

Manufacturer: Trust
Speed: 12Mb/s (full)
USB Version:  1.00
Device Class: 00(>ifc )
Device Subclass: 00
Device Protocol: 00
Maximum Default Endpoint Size: 8
Number of Configurations: 1
Vendor Id: 06d6
Product Id: 0031
Revision Number:  1.00

Config Number: 1
Number of Interfaces: 2
Attributes: 80
MaxPower Needed: 500mA

Interface Number: 0
Name: sunplus
Alternate Number: 0
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 0
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 1
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 128
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 2
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 384
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 3
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 512
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 4
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 640
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 5
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 768
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 6
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 896
Interval: 1ms

Interface Number: 0
Name: sunplus
Alternate Number: 7
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 1

Endpoint Address: 81
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 1023
Interval: 1ms

Interface Number: 1
Name: sunplus
Alternate Number: 0
Class: ff(vend.)
Sub Class: 00
Protocol: 00
Number of Endpoints: 3

Endpoint Address: 82
Direction: in
Attribute: 2
Type: Bulk
Max Packet Size: 64
Interval: 0ms

Endpoint Address: 03
Direction: out
Attribute: 2
Type: Bulk
Max Packet Size: 64
Interval: 0ms

Endpoint Address: 84
Direction: in
Attribute: 3
Type: Int.
Max Packet Size: 1
Interval: 1ms

Regards,

Márton Németh

#3 lore raw
In reply to Németh Márton
Quoted 5 lines · On Sun, 10 Jan 2010 17:38:00 +0100 Németh Márton <[email protected]> wrote:

I tried the gspca_sunplus driver from
http://linuxtv.org/hg/~jfrancois/gspca/ rev 13915 on top of Linux kernel 2.6.32. When I plug the Trust 610 LCD PowerC@m Zoom device in webcam mode (0x06d6:0x0031) then two devices are created: /dev/video0 and /dev/video1:

	[snip]

OK, this is a bug. I did not imagine that some webcams had the same interface class for two different devices. I am fixing it.

Thanks.

Signature · 2 lines
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/
author
#4 lore raw
Quoted 8 lines · Jean-Francois Moine
Quoted 5 lines · On Sun, 10 Jan 2010 17:38:00 +0100 Németh Márton <[email protected]> wrote:

I tried the gspca_sunplus driver from
http://linuxtv.org/hg/~jfrancois/gspca/ rev 13915 on top of Linux kernel 2.6.32. When I plug the Trust 610 LCD PowerC@m Zoom device in webcam mode (0x06d6:0x0031) then two devices are created: /dev/video0 and /dev/video1:

Quoted 4 lines
	[snip]

OK, this is a bug. I did not imagine that some webcams had the same interface class for two different devices. I am fixing it.

rev 13917 from http://linuxtv.org/hg/~jfrancois/gspca/ works correctly with Trust 610 LCD PowerC@m Zoom device in webcam mode (0x06d6:0x0031):
only one device is created.

Thanks for the fix.

Regards,

Márton Németh

#5 lore raw
In reply to Jean-Francois Moine

Hi,

Quoted 8 lines · Jean-Francois Moine
Quoted 5 lines · On Sun, 10 Jan 2010 17:38:00 +0100 Németh Márton<[email protected]> wrote:

I tried the gspca_sunplus driver from
http://linuxtv.org/hg/~jfrancois/gspca/ rev 13915 on top of Linux kernel 2.6.32. When I plug the Trust 610 LCD PowerC@m Zoom device in webcam mode (0x06d6:0x0031) then two devices are created: /dev/video0 and /dev/video1:

Quoted 5 lines
	[snip]

OK, this is a bug. I did not imagine that some webcams had the same interface class for two different devices. I am fixing it.

JF,

You did not mark this as high priority, still it should go into 2.6.33. can you please send a mail to Mauro asking for this ?

Regards,

Hans

#6 lore raw
Quoted 2 lines · On Mon, 11 Jan 2010 01:22:50 +0100 Hans de Goede <[email protected]> wrote:

You did not mark this as high priority, still it should go into 2.6.33. can you please send a mail to Mauro asking for this ?

The previous change (test of the interface class) had not a high priority, so, it will not go into 2.6.33. Then, both changes will go into 2.6.34. I hope you did not mark a high priority to the cpia1 port to gspca...

Regards.

Signature · 2 lines
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/