Greetings,
i have a UPS drive (Ippon Smart Power Pro 2000) which has a usb and a
serial interface, but my mainboard doesn't have an external serial port,
and i'd like to manage the UPS via the USB port.
the USB interface is based on Cypress Semiconductor chip - here is the
output from "lsusb -v":
=====================================================
Bus 006 Device 026: ID 0665:5161
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0665
idProduct 0x5161
bcdDevice 0.02
iManufacturer 1 Cypress Semiconductor
iProduct 2 USB to Serial
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 3
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Devices
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 4 Sample HID
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.00
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 27
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 32
Device Status: 0x0000
(Bus Powered)
=====================================================
i loaded the cypress_m8 module via "modprobe cypress_m8", but when i
plug in the USB cable, i don't get any serial device node created in
/dev/usb/ (which is supposed to happen?).
when i plug in the USB cable, i get these messages in the dmesg output:
usb 6-2: new low speed USB device using uhci_hcd and address 28
usb 6-2: configuration #1 chosen from 1 choice
usbcore: registered new driver hiddev
hiddev96: USB HID v1.00 Device [Cypress Semiconductor USB to Serial] on
usb-0000:00:1d.1-2
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
i.e. the usbhid module gets loaded and it gets control over the USB
port (instead of thecypress_m8 driver), and creates the device node
/dev/usb/hiddev0
if i disable the usbhid module (rename usbhid.ko to usbhid.ko_ to
prevent it from auto-loading), i just get this:
usb 6-1: new low speed USB device using uhci_hcd and address 29
usb 6-1: configuration #1 chosen from 1 choice
and no device node is created.
my question is - could the cypress_m8 driver (or other driver) be used
with this controller (device id is 0665:5161) to make it look as a
plain serial device?
Best,
v.
P.S. please Cc me your reply...
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