On Mon, Apr 29, 2013 at 12:39:56PM +0200, Andrzej Pietrasiewicz wrote: > A USB "gadget" can be set up entirely through configfs. > This patch adds options to build the USB functions' modules > without building "old" gadget modules, e.g. build > usb_f_acm.ko or usb_f_ecm.ko, but not g_cdc.ko. > > Please see: > > http://www.spinics.net/lists/linux-usb/msg83460.html > http://www.spinics.net/lists/linux-usb/msg85065.html > http://www.spinics.net/lists/linux-usb/msg85156.html > > for what functions are already available through configfs; > so far the equivalents of g_serial, g_ncm and g_cdc can be set up > through configfs. Please note, that the actual gadget composition > can consist of any functions available, not just those available > in a given "old" g_xxxxxx.ko gadget. That is, one can take > some functions found in g_serial, some in g_ncm and some in g_cdc, > e.g. such a gadget can consist of acm, generic serial, obex and ecm, functions, > while the g_serial consists of acm, generic serial, obex, the g_ncm > consists of ncm and g_cdc consists of acm and ecm. The concept > is illustrated in the table below, taking into account the currently > available configfs support: > > --------------------------------------------------------------------------- > | gadget | > |----------------------------------------------------------- > function | g_serial | g_ncm | g_cdc | set up through configfs | > --------------------------------------------------------------------------- > acm | * | | * | o | > generic serial | * | | | o | > obex | * | | | o | > ncm | | * | | o | > ecm | | | * | o | > | | | | | > > . . . . . . > . . . . . . > . . . . . . > > << more functions to come >> > > . . . . . . > . . . . . . > . . . . . . > --------------------------------------------------------------------------- > "*" - built-in, mandatory, no other functions possible > "o" - option > > So one can create, using only mkdir/echo/ln from shell, a gadget which provides > e.g. acm, generic serial, obex and ecm without adding and compiling a new > g_serial_with_ecm.c. > > A documentation file is added to Documentation/usb. > > Function's attributes are described in > > Documentation/ABI/*/configfs-usb-gadget* > > The latter might need adjusting the "KernelVersion" and "Date" tags. > > Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx> > Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> Doesn't apply and there are trailing whitespaces in a few places. This will be delayed for v3.12, sorry. -- balbi
Attachment:
signature.asc
Description: Digital signature
