Hi all,
I am trying to enable usb support on PXA27x board using
linux-2.6.20. Inserted the following modules successfully
usbcore.ko
ohci_hcd.ko
usb-storage.ko
and inserted the flash drive(1GB) on USB port.
but "/sys/bus/usb/devices/" directory is empty. I found no
information even enabling DEBUG mode.
Initially module ohci-hcd.ko was not registering properly bcos of
empty platform_data. So fixed the bug with the help of patch found on link
"http://lkml.org/lkml/2006/6/8/221";.
here is the dmesg output while inserting the modules.
root:/tmp# insmod usbcore.ko
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
root:/tmp# lsmod
Module Size Used by Not tainted
usbcore 145956 0
root:/tmp# dmesg -c
kobject usbcore: registering. parent: <NULL>, set: module
kobject drivers: registering. parent: usbcore, set: <NULL>
kobject_uevent_env
fill_kobj_path: path = '/module/usbcore/drivers'
kobject_uevent_env
fill_kobj_path: path = '/module/usbcore'
subsystem usb: registering
kobject usb: registering. parent: <NULL>, set: bus
kobject devices: registering. parent: usb, set: <NULL>
kobject drivers: registering. parent: usb, set: <NULL>
bus type 'usb' registered
device class 'usb_host': registering
subsystem usb_host: registering
kobject usb_host: registering. parent: <NULL>, set: class
bus usb: add driver usbfs
kobject usbfs: registering. parent: <NULL>, set: drivers
kobject_uevent_env
fill_kobj_path: path = '/bus/usb/drivers/usbfs'
usbcore: registered new interface driver usbfs
device class 'usb_device': registering
subsystem usb_device: registering
kobject usb_device: registering. parent: <NULL>, set: class
bus usb: add driver hub
kobject hub: registering. parent: <NULL>, set: drivers
kobject_uevent_env
fill_kobj_path: path = '/bus/usb/drivers/hub'
usbcore: registered new interface driver hub
bus usb: add driver usb
kobject usb: registering. parent: <NULL>, set: drivers
kobject_uevent_env
fill_kobj_path: path = '/bus/usb/drivers/usb'
usbcore: registered new device driver usb
root:/tmp# insmod ohci-hcd.ko
root:/tmp# dmesg
kobject ohci_hcd: registering. parent: <NULL>, set: module
kobject drivers: registering. parent: ohci_hcd, set: <NULL>
kobject_uevent_env
fill_kobj_path: path = '/module/ohci_hcd/drivers'
kobject_uevent_env
fill_kobj_path: path = '/module/ohci_hcd'
2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver
(pxa27x)<7>block sizes: ed 64 td 64
bus platform: add driver pxa27x-ohci
kobject pxa27x-ohci: registering. parent: <NULL>, set: drivers
kobject_uevent_env
fill_kobj_path: path = '/bus/platform/drivers/pxa27x-ohci'
root:/tmp# lsmod
Module Size Used by Not tainted
ohci_hcd 36964 0
usbcore 145956 1 ohci_hcd
root:/tmp# insmod usb-storage.ko
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
root:/tmp# dmesg
kobject usb_storage: registering. parent: <NULL>, set: module
kobject drivers: registering. parent: usb_storage, set: <NULL>
kobject_uevent_env
fill_kobj_path: path = '/module/usb_storage/drivers'
kobject_uevent_env
fill_kobj_path: path = '/module/usb_storage'
Initializing USB Mass Storage driver...
bus usb: add driver usb-storage
kobject usb-storage: registering. parent: <NULL>, set: drivers
kobject_uevent_env
fill_kobj_path: path = '/bus/usb/drivers/usb-storage'
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
root:/tmp# lsmod
Module Size Used by Not tainted
usb_storage 87339 0
ohci_hcd 36964 0
usbcore 145956 2 usb_storage,ohci_hcd
root:/tmp# ps
PID Uid VmSize Stat Command
1 0 476 S init
2 0 SWN [ksoftirqd/0]
3 0 SW< [events/0]
4 0 SW< [khelper]
5 0 SW< [kthread]
36 0 SW< [kblockd/0]
37 0 SW< [kseriod]
50 0 SW [pdflush]
51 0 SW [pdflush]
52 0 SW< [kswapd0]
53 0 SW< [aio/0]
665 0 SW [mtdblockd]
812 0 676 R -sh
927 0 SW< [ksuspend_usbd]
930 0 SW< [khubd]
953 0 532 R ps
Thanks in advance
Girish A J
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