Alan Stern wrote: > On Tue, 13 Feb 2007, Raphael Assenat wrote: >>I have some pxa270 based single board computers which have an >>IT8152G companion chip. This chip has a built-in USB Host controller >>which is (according to the datasheet) register compatible with OHCI >>specification version 1.0. >> >>During boot, I see that the OHCI controller is detected properly. >>Devices that were already connected to the USB ports handled by this >>chip are also detected at boot time. And they work correcly. >> >>But when I connect a new device to a free port, nothing happens. > > > Is that true even if there was also a device attached at boot time, or > does it happen only when you connect a new device and all the ports are > unoccupied? I had not thought of trying that... I did some tests and found that if a device was present at boot time, new devices _are_ detected correctly. And as long as the number of connected devices does not fall down to 0, all ports work normally.
>> No >>messages in dmesg, and the device does not seem to initialize. (eg: >>Led under optical mouse does not turn on). I have verified, and >>there is power on the USB power pins. If I disconnect a device that >>was present at boot time and reconnect it, it is not re-detected. >> >>Here is a list of kernel version I was able to test with, and the >>results: >>2.6.20 -> Same problems as described above. >>2.6.18 -> Same problems as described above. >>2.6.17.5 -> Same problems as described above. >>2.6.16.12 -> Everything works fine. >> >>Suspecting that this could be a bug in the chip's implementation >>exposed by some new features, I started looking at the code in the >>hope to find stuff like controller specific work arounds, quirks, >>etc to try. but I found nothing that was applicable to my problem... > > > It sounds like your chip doesn't obey the RHSC bit in the > HcInterruptEnable register. But the problem might be something else. Well it seems that no interrupts are generated when I connect/disconnect a new device... The counter in /proc/interrupt stays the same. before connecting a device: 167: 216 it8152 ohci_hcd:usb2 after connection a device: 167: 216 it8152 ohci_hcd:usb2 > > If you want to get useful information from the system log, you have to > turn on CONFIG_USB_DEBUG. > Ok, below you'll find some of the output I got when booting with a device connected and when connecting/disconnecting devices. In case you wonder, usb1 is the pxa270's ohci controller. I was wondering, can this be a problem? hub 2-0:1.0: trying to enable port power on non-switchable hub And apparently, once I get this message, the ports stop working. ohci_hcd 0000:00:01.4: auto-stop root hub ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI) ohci_hcd: block sizes: ed 64 td 64 pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00010101 CSC PPS CCS hub 1-0:1.0: port 2, status 0101, change 0001, 12 Mb/s ohci_hcd 0000:00:01.4: OHCI Host Controller drivers/usb/core/inode.c: creating file '002' ohci_hcd 0000:00:01.4: new USB bus registered, assigned bus number 2 ohci_hcd 0000:00:01.4: created debug files ohci_hcd 0000:00:01.4: irq 167, io mem 0x10000000 ohci_hcd 0000:00:01.4: resetting from state 'reset', control = 0x0 ohci_hcd 0000:00:01.4: OHCI controller state ohci_hcd 0000:00:01.4: OHCI 1.0, NO legacy support registers ohci_hcd 0000:00:01.4: control 0x083 HCFS=operational CBSR=3 ohci_hcd 0000:00:01.4: cmdstatus 0x00000 SOC=0 ohci_hcd 0000:00:01.4: intrstatus 0x00000044 RHSC SF ohci_hcd 0000:00:01.4: intrenable 0x8000000a MIE RD WDH ohci_hcd 0000:00:01.4: hcca frame #0003 ohci_hcd 0000:00:01.4: roothub.a 01000202 POTPGT=1 NPS NDP=2(2) ohci_hcd 0000:00:01.4: roothub.b 00000000 PPCM=0000 DR=0000 ohci_hcd 0000:00:01.4: roothub.status 00008000 DRWE ohci_hcd 0000:00:01.4: roothub.portstatus [0] 0x00010101 CSC PPS CCS ohci_hcd 0000:00:01.4: roothub.portstatus [1] 0x00000100 PPS usb usb2: default language 0x0409 usb usb2: new device strings: Mfr=3, Product=2, SerialNumber=1 usb usb2: Product: OHCI Host Controller usb usb2: Manufacturer: Linux 2.6.20-8d ohci_hcd usb usb2: SerialNumber: 0000:00:01.4 usb usb2: uevent usb usb2: usb_probe_device usb usb2: configuration #1 chosen from 1 choice usb usb2: adding 2-0:1.0 (config #1, interface 0) usb 2-0:1.0: uevent hub 2-0:1.0: usb_probe_interface hub 2-0:1.0: usb_probe_interface - got id hub 2-0:1.0: USB hub found hub 2-0:1.0: 2 ports detected hub 2-0:1.0: standalone hub hub 2-0:1.0: no power switching (usb 1.0) hub 2-0:1.0: global over-current protection hub 2-0:1.0: power on to power good time: 2ms hub 2-0:1.0: local power source is good hub 2-0:1.0: no over-current condition exists hub 2-0:1.0: trying to enable port power on non-switchable hub hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0002 ohci_hcd 0000:00:01.4: GetStatus roothub.portstatus [0] = 0x00010101 CSC PPS CCS hub 2-0:1.0: port 1, status 0101, change 0001, 12 Mb/s hub 2-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101 ohci_hcd 0000:00:01.4: GetStatus roothub.portstatus [0] = 0x00100103 PRSC PPS PES S usb 2-1: new full speed USB device using ohci_hcd and address 2 ohci_hcd 0000:00:01.4: GetStatus roothub.portstatus [0] = 0x00100103 PRSC PPS PES S usb 2-1: default language 0x0409 usb 2-1: new device strings: Mfr=2, Product=3, SerialNumber=4 usb 2-1: Product: ImageMate 8 in 1 usb 2-1: Manufacturer: SanDisk usb 2-1: SerialNumber: 0200472688 usb 2-1: uevent usb 2-1: usb_probe_device usb 2-1: configuration #1 chosen from 1 choice usb 2-1: adding 2-1:1.0 (config #1, interface 0) usb 2-1:1.0: uevent drivers/usb/core/inode.c: creating file '002' hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0002 ... ** now I connect a new device, disconnect the first one, reconnect it... ... hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0004 ohci_hcd 0000:00:01.4: GetStatus roothub.portstatus [1] = 0x00010101 CSC PPS CCS hub 2-0:1.0: port 2, status 0101, change 0001, 12 Mb/s hub 2-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x101 ohci_hcd 0000:00:01.4: GetStatus roothub.portstatus [1] = 0x00100103 PRSC PPS PES S usb 2-2: new full speed USB device using ohci_hcd and address 6 ohci_hcd 0000:00:01.4: GetStatus roothub.portstatus [1] = 0x00100103 PRSC PPS PES S usb 2-2: ep0 maxpacket = 8 usb 2-2: skipped 4 descriptors after interface usb 2-2: skipped 2 descriptors after interface usb 2-2: skipped 1 descriptor after endpoint usb 2-2: skipped 2 descriptors after interface usb 2-2: skipped 1 descriptor after endpoint usb 2-2: default language 0x0409 usb 2-2: new device strings: Mfr=0, Product=2, SerialNumber=0 usb 2-2: Product: Camera usb 2-2: uevent usb 2-2: usb_probe_device usb 2-2: configuration #1 chosen from 1 choice usb 2-2: adding 2-2:1.0 (config #1, interface 0) usb 2-2:1.0: uevent usb 2-2: adding 2-2:1.1 (config #1, interface 1) usb 2-2:1.1: uevent usb 2-2: adding 2-2:1.2 (config #1, interface 2) usb 2-2:1.2: uevent drivers/usb/core/inode.c: creating file '006' hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0004 hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0004 ohci_hcd 0000:00:01.4: GetStatus roothub.portstatus [1] = 0x00030100 PESC CSC PPS hub 2-0:1.0: port 2, status 0100, change 0003, 12 Mb/s usb 2-2: USB disconnect, address 6 usb 2-2: unregistering device usb 2-2: usb_disable_device nuking all URBs usb 2-2: unregistering interface 2-2:1.0 usbdev2.6_ep81: ep_device_release called for usbdev2.6_ep81 usbdev2.6_ep82: ep_device_release called for usbdev2.6_ep82 usb 2-2:1.0: uevent usb 2-2: unregistering interface 2-2:1.1 usb 2-2:1.1: uevent usb 2-2: unregistering interface 2-2:1.2 usb 2-2:1.2: uevent usbdev2.6_ep00: ep_device_release called for usbdev2.6_ep00 usb 2-2: uevent hub 2-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x100 hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0002 ohci_hcd 0000:00:01.4: GetStatus roothub.portstatus [0] = 0x00030100 PESC CSC PPS hub 2-0:1.0: port 1, status 0100, change 0003, 12 Mb/s usb 2-1: USB disconnect, address 5 usb 2-1: unregistering device usb 2-1: usb_disable_device nuking all URBs usb 2-1: unregistering interface 2-1:1.0 usbdev2.5_ep81: ep_device_release called for usbdev2.5_ep81 usbdev2.5_ep02: ep_device_release called for usbdev2.5_ep02 usb 2-1:1.0: uevent usbdev2.5_ep00: ep_device_release called for usbdev2.5_ep00 usb 2-1: uevent hub 2-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x100 ohci_hcd 0000:00:01.4: auto-stop root hub Best regards, -- Raphael Assenat 8D Technologies Inc. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
