On Fri, Jul 13, 2007 at 10:20:11PM -0400, Xiaofan Chen wrote: > On 4/27/07, Greg Kroah-Hartman <[EMAIL PROTECTED]> wrote: > > From: Joey Goncalves <[EMAIL PROTECTED]> > > > >> Hi Greg: > > > > >I have found that /drivers/usb/misc/ldusb.c works with the "PICDEM Full > > > Speed USB" > > > http://www.microchip.com/stellent/idcplg? > > > IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en021940 > > > > > > Signed-off-by: Joey S Goncalves <[EMAIL PROTECTED]> > > Cc: Michael Hund <[EMAIL PROTECTED]> > > Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]> > > --- > > drivers/usb/misc/ldusb.c | 3 +++ > > 1 files changed, 3 insertions(+), 0 deletions(-) > > > > diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c > > index 788a11e..11555bd 100644 > > --- a/drivers/usb/misc/ldusb.c > > +++ b/drivers/usb/misc/ldusb.c > > @@ -62,6 +62,8 @@ > > #define USB_DEVICE_ID_VERNIER_SKIP 0x0003 > > #define USB_DEVICE_ID_VERNIER_CYCLOPS 0x0004 > > > > +#define USB_VENDOR_ID_MICROCHIP 0x04d8 > > +#define USB_DEVICE_ID_PICDEM 0x000c > > > > PICDEM FS USB is a demo board from Microchip and it > has many examples with different PID. is one > of the example for the Demo mode. > > libusb works very well for the Demo mode (PID=0x000c) > and the boot mode (PID=0x000b). > > More info of the libusb based application: > > PICDEM FS USB bootloader for Linux/Windows using libusb > http://www.internetking.org/fsusb/ > http://forum.microchip.com/tm.aspx?m=106426 > > PICDEM FS USB demo appliation under Linux/Windows using libusb > http://www.varxec.net/picdem_fs_usb/ > > Just wondering if there is any benefit of using ldusb compared > to libusb. Sorry I do not know much about ldusb.
ldusb is just a way for devices to use a kernel ring buffer to make sure that no data is dropped from the card. Lots of high-speed devices need this. > Will the ldusb driver affect the existing libusb based application? It might mess them up if the libusb code doesn't try to unbind any kernel driver that might be bound to the device already. Can you try running with this patch enabled to see if it handles it properly or not? And if libusb is the proper way to talk to this device, then we can easily revert this change. thanks, greg k-h ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
