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Message-ID: <CAAfyv34aEL4mna1jDOg7md9UfWES1W_FEFdM_s1TJ5SY-+TsGA@mail.gmail.com>
Date: Tue, 23 Jul 2013 10:46:49 +0200
From: Belisko Marek <marek.belisko@...il.com>
To: Paolo Bolzoni <paolo.bolzoni.brown@...il.com>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: Re: Unsupported DisplayLink (udl or udlfb module)
On Tue, Jul 23, 2013 at 10:15 AM, Paolo Bolzoni
<paolo.bolzoni.brown@...il.com> wrote:
> On Mon, Jul 22, 2013 at 10:07 PM, Belisko Marek <marek.belisko@...il.com> wrote:
>>> But, it does not matter what of the two modules I have loaded it
>>> seems the kernel does not recognize it
>> Matching is done by VID = 0x17e9 which seem match but then by
>> bInterfaceClass = 0xff, bInterfaceSubClass = 0x00 and bInterfaceProtocol = 0x00.
>> Can you please post lsusb -v to check what are other parameters for your device.
> Sure thing, I appended the output at the end of the email because it
> is a little long.
>
> Please if you answer put my address paolo.bolzoni.brown@...il.com in
> CC as I did not register to the mailing list.
>
> Your sincerely,
> Paolo
>
>
> Here is the lsusb -v output about my DisplayLink:
Can you please try following patch:
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
index d2e5bc3..a9c96f4 100644
--- a/drivers/video/udlfb.c
+++ b/drivers/video/udlfb.c
@@ -64,6 +64,16 @@ static struct usb_device_id id_table[] = {
USB_DEVICE_ID_MATCH_INT_SUBCLASS |
USB_DEVICE_ID_MATCH_INT_PROTOCOL,
},
+ {.idVendor = 0x17e9,
+ .bInterfaceClass = 0xff,
+ .bInterfaceSubClass = 0x00,
+ .bInterfaceProtocol = 0x03,
+ .match_flags = USB_DEVICE_ID_MATCH_VENDOR |
+ USB_DEVICE_ID_MATCH_INT_CLASS |
+ USB_DEVICE_ID_MATCH_INT_SUBCLASS |
+ USB_DEVICE_ID_MATCH_INT_PROTOCOL,
+
+ },
{},
};
MODULE_DEVICE_TABLE(usb, id_table);
>
> Bus 003 Device 002: ID 17e9:4300 DisplayLink
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 3.00
> bDeviceClass 239 Miscellaneous Device
> bDeviceSubClass 2 ?
> bDeviceProtocol 1 Interface Association
> bMaxPacketSize0 9
> idVendor 0x17e9 DisplayLink
> idProduct 0x4300
> bcdDevice 2.36
> iManufacturer 1
> iProduct 2
> iSerial 3
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 103
> bNumInterfaces 2
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0x80
> (Bus Powered)
> MaxPower 126mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 3
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 0
> bInterfaceProtocol 3
> iInterface 0
> ** UNRECOGNIZED: 0c 5f 01 00 0a 00 04 04 01 00 04 00
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x02 EP 2 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0400 1x 1024 bytes
> bInterval 0
> bMaxBurst 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x84 EP 4 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0400 1x 1024 bytes
> bInterval 0
> bMaxBurst 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x85 EP 5 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0008 1x 8 bytes
> bInterval 5
> bMaxBurst 0
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 0
> bNumEndpoints 0
> bInterfaceClass 254 Application Specific Interface
> bInterfaceSubClass 1 Device Firmware Update
> bInterfaceProtocol 1
> iInterface 0
>
> Device Firmware Upgrade Interface Descriptor:
> bLength 9
> bDescriptorType 33
> bmAttributes 1
> Will Not Detach
> Manifestation Intolerant
> Upload Unsupported
> Download Supported
> wDetachTimeout 200 milliseconds
> wTransferSize 1024 bytes
> bcdDFUVersion 1.01
> ** UNRECOGNIZED: 10 40 06 01 09 01 01 03 45 6c 6c 61 44 6f 63 6b
> --
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marek
--
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-------------------------------------------------
Marek Belisko - OPEN-NANDRA
Freelance Developer
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Tel: +421 915 052 184
skype: marekwhite
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