Dear All, This is the fifth version of what used to be called "USB Functions Gadget". It includes changes after Michal's and Sebastian's reviews - thanks, guys. This is what I have been working on since June'12 and starts looking usable. As an example I ported the mass storage function, which is a nontrivial one. I am also working on adapter modules to provide the legacy interface. The general idea is like here: http://www.spinics.net/lists/linux-usb/msg74871.html but after the change of programmatic configfs folder creation the adapter needs to be changed. Naming is to be adjusted, not a big deal. This series requires 126c4896cd5ca94f5e1d77d7526870f99019ea48 fs/configfs: allow to create groups on demand and f7e4ec2ed0eddd63b93d0ca1beb45ffec6bb12b2 usb/gadget: add some infracture to register/unregister functions Example use with mass storage: $ mount -t configfs none /cfg $ cd /cfg/usb-function-gadget/ $ ls gadgets udcs $ ls udcs s3c-hsotg $ cd gadgets $ mkdir g1 $ ls g1 $ cd g1 $ ls bcdDevice functions iProduct idProduct configs iManufacturer iSerialNumber idVendor $ echo Samsung > iManufacturer $ echo 12345 > iSerialNumber $ echo 0x0109 > idProduct $ echo 0x04e8 > idVendor $ cd functions $ mkdir MassStorage.0 [ 110.485345] Mass Storage Function, version: 2009/09/11 [ 110.489669] Number of LUNs=0 [ 110.491871] I/O thread pid: 2491 $ ls MassStorage.0 $ lsmod f_mass_storage $ echo 1 > MassStorage.0/luns [ 139.969099] LUN: file: (no medium) $ echo /root/file.img > MassStorage.0/lun0/file $ cd ../configs $ mkdir 0 $ ls 0 $ cd 0 $ ls configuration_number functions maximum_power number_of_interfaces $ cd functions $ ln -s ../../../functions/MassStorage.0 # points to /cfg/usb_function_gadget/ # gadgets/g1/functions/MassStorage.0 $ ls MassStorage.0 $ cd ../../../ $ ln -s ../../udcs/s3c-hsotg # points to /cfg/usb_function_gadget/ # udcs/s3c-hsotg # the gadget is probed, host sees a new disk $ ls /cfg/usb-function-gadget/gadgets/g1/functions/MassStorage.0 interface00 lun0 luns stall $ ls /cfg/usb-function-gadget/gadgets/g1/functions/MassStorage.0\ /interface00 altsetting endpoint81 interface_number interface_subclass endpoint02 interface_class interface_protocol n_endpoints $ ls /cfg/usb-function-gadget/gadgets/g1/functions/MassStorage.0\ /interface00/endpoint02 attributes endpoint_address interval max_packet_size $ rm s3c-hsotg # the gadget is removed Rebased on 3.7-rc8. v5: Changes since v4: - fixes according to Michal's and Sebastian's reviews - adapted to new directory layout as proposed by Michal and Sebastian - binding the gadget using symlink to udc - binding the functions using symlinks v4: Changes since v3: - use Sebastian's function registration framework - code cleanup and small improvements - differently squashed commits in order to show the steps v3: Changes since v2: - improved ufg_gadget_bind - some attributes have real values instead of dummy values - added interfaces and endpoints directories in configfs - added a local header file in drivers/usb/gadget Andrzej Pietrasiewicz (3): usb: composite: add make_group and add_function operations usb: gadget: Add USB Functions Gadget usb: gadget: example port of mass storage to UFG: create storage_common.h and factor out code from storage_common.c Documentation/usb/ufg.txt | 2 + drivers/usb/gadget/Kconfig | 17 + drivers/usb/gadget/Makefile | 8 +- drivers/usb/gadget/f_mass_storage.c | 825 ++++++++++++------------- drivers/usb/gadget/f_mass_storage.h | 99 +++ drivers/usb/gadget/storage_common.c | 175 ++++--- drivers/usb/gadget/storage_common.h | 43 ++ drivers/usb/gadget/udc-core.c | 27 +- drivers/usb/gadget/usb_functions.c | 1142 +++++++++++++++++++++++++++++++++++ drivers/usb/gadget/usb_functions.h | 188 ++++++ include/linux/usb/composite.h | 6 + include/linux/usb/gadget.h | 5 + 12 files changed, 2033 insertions(+), 504 deletions(-) create mode 100644 Documentation/usb/ufg.txt create mode 100644 drivers/usb/gadget/f_mass_storage.h create mode 100644 drivers/usb/gadget/storage_common.h create mode 100644 drivers/usb/gadget/usb_functions.c create mode 100644 drivers/usb/gadget/usb_functions.h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
