leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
ddf8abd259
linux/drivers/usb/gadget
History
Michal Nazarewicz ddf8abd259 USB: f_fs: the FunctionFS driver 
The FunctionFS is a USB composite function that can be used
with the composite framework to create an USB gadget.

>From kernel point of view it is just a composite function with
some unique behaviour.  It may be added to an USB
configuration only after the user space driver has registered
by writing descriptors and strings (the user space program has
to provide the same information that kernel level composite
functions provide when they are added to the configuration).

>From user space point of view it is a file system which when
mounted provide an "ep0" file.  User space driver need to
write descriptors and strings to that file.  It does not need
to worry about endpoints, interfaces or strings numbers but
simply provide descriptors such as if the function was the
only one (endpoints and strings numbers starting from one and
interface numbers starting from core).  The FunctionFS changes
numbers of those as needed also handling situation when
numbers differ in different configurations.

When descriptors and strings are written "ep#" files appear
(one for each declared endpoint) which handle communication on
a single endpoint.  Again, FunctionFS takes care of the real
numbers and changing of the configuration (which means that
"ep1" file may be really mapped to (say) endpoint 3 (and when
configuration changes to (say) endpoint 2)).  "ep0" is used
for receiving events and handling setup requests.

When all files are closed the function disables itself.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:43 -07:00
..
amd5536udc.c usb: amd5536udc: fixed shared interrupt bug and warning oops 2009-11-30 16:43:15 -08:00
amd5536udc.h
at91_udc.c ARM: 5965/1: Fix soft lockup in at91 udc driver 2010-03-29 17:36:04 +01:00
at91_udc.h
atmel_usba_udc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
atmel_usba_udc.h USB: atmel uaba: Adding invert vbus_pin 2010-03-02 14:54:57 -08:00
audio.c USB: audio gadget: free alsa devices when unloading 2009-12-23 11:34:20 -08:00
cdc2.c USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
ci13xxx_udc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ci13xxx_udc.h USB: gadget: MIPS ci13xxx_udc 2009-01-07 09:59:58 -08:00
composite.c USB: gadget: __init and __exit tags removed 2010-05-20 13:21:43 -07:00
config.c USB: gadget: __init and __exit tags removed 2010-05-20 13:21:43 -07:00
dummy_hcd.c USB: make hcd.h public (drivers dependency) 2010-05-20 13:21:30 -07:00
epautoconf.c USB: gadget: __init and __exit tags removed 2010-05-20 13:21:43 -07:00
ether.c USB: Correct CONFIG variable typo. 2010-03-02 14:53:40 -08:00
f_acm.c USB: gadget: __init and __exit tags removed 2010-05-20 13:21:43 -07:00
f_audio.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
f_ecm.c USB: gadget: __init and __exit tags removed 2010-05-20 13:21:43 -07:00
f_eem.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
f_fs.c USB: f_fs: the FunctionFS driver 2010-05-20 13:21:43 -07:00
f_hid.c USB: gadget: add HID gadget driver 2010-05-20 13:21:35 -07:00
f_loopback.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
f_mass_storage.c USB: gadget: __init and __exit tags removed 2010-05-20 13:21:43 -07:00
f_obex.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
f_phonet.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
f_rndis.c USB: gadget: __init and __exit tags removed 2010-05-20 13:21:43 -07:00
f_serial.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
f_sourcesink.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
f_subset.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
f_uvc.c USB gadget: video class function driver 2010-05-20 13:21:41 -07:00
f_uvc.h USB gadget: video class function driver 2010-05-20 13:21:41 -07:00
file_storage.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-03-04 08:15:33 -08:00
fsl_mx3_udc.c fsl_mx3_udc: Add i.MX35 support 2010-02-04 15:55:09 +01:00
fsl_qe_udc.c USB gadget: make Open Firmware device id constant 2010-03-02 14:54:18 -08:00
fsl_qe_udc.h powerpc/qe&cpm: Implement static inline stubs for non-QE/CPM builds 2009-11-11 21:43:20 -06:00
fsl_udc_core.c USB: mxc: gadget: Fix bitfield for calculating maximum packet size 2010-05-20 13:21:40 -07:00
fsl_usb2_udc.h USB: gadget: Add i.MX3x support to the fsl_usb2_udc driver 2009-06-15 21:44:47 -07:00
g_zero.h USB: gadget: gadget zero uses new suspend/resume hooks 2009-03-24 16:20:45 -07:00
gadget_chips.h USB: gadget: add gadget controller number for s3c-hsotg driver 2010-03-19 07:24:22 -07:00
gmidi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
goku_udc.c USB: goku_udc: remove potential null dereference 2010-03-19 07:24:19 -07:00
goku_udc.h
hid.c USB: g_hid: unregister platform driver on probe/usb_composite_register errors 2010-05-20 13:21:40 -07:00
imx_udc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
imx_udc.h USB: imx_udc: Fix IMX UDC gadget general irq handling 2009-03-24 16:20:29 -07:00
inode.c usb: gadgetfs: Convert semaphore to mutex 2010-03-02 14:54:52 -08:00
Kconfig USB: gadget webcam: depends on VIDEO_DEV 2010-05-20 13:21:42 -07:00
langwell_udc.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
langwell_udc.h USB: Add Intel Langwell USB Device Controller driver 2009-06-15 21:44:47 -07:00
lh7a40x_udc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
lh7a40x_udc.h
m66592-udc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
m66592-udc.h usb: m66592-udc platform data on_chip support 2009-07-23 13:04:15 +09:00
Makefile USB gadget: Webcam device 2010-05-20 13:21:42 -07:00
mass_storage.c USB: mass_storage: eject LUNs on thread exit 2010-03-02 14:54:49 -08:00
multi.c USB: gadget/multi: cdc_do_config: remove redundant check 2010-03-19 07:24:24 -07:00
ndis.h
net2280.c USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
net2280.h
nokia.c USB: gadget: introduce g_nokia gadget driver 2010-03-02 14:54:02 -08:00
omap_udc.c omap1: omap_udc: Add clocking and disable vbus sense for omap7xx 2009-11-22 10:24:32 -08:00
omap_udc.h
printer.c USB: Remove unsupported usb gadget drivers 2010-03-02 14:54:57 -08:00
pxa25x_udc.c [ARM] pxa: move board board IRQ definitions out of irqs.h 2010-03-02 07:40:51 +08:00
pxa25x_udc.h USB: gadget: pxa25x: basic transceiver support 2009-09-23 06:46:23 -07:00
pxa27x_udc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pxa27x_udc.h USB: pxa27x_udc: use four bits to store endpoint addresses 2010-05-20 13:21:36 -07:00
r8a66597-udc.c Merge branch 'master' into export-slabh 2010-04-05 11:37:28 +09:00
r8a66597-udc.h usb: r8a66597-udc unaligned fifo fix 2009-10-06 10:59:03 +09:00
rndis.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
rndis.h USB: gadget: Add EEM gadget driver 2009-09-23 06:46:35 -07:00
s3c2410_udc.c USB: s3c2410: unregister should call unbind, not disconnect 2009-09-23 06:46:35 -07:00
s3c2410_udc.h
s3c-hsotg.c USB: gadget: s3c-hsotg: Add missing unlock 2010-04-30 09:25:11 -07:00
serial.c USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
storage_common.c USB: g_mass_storage: code cleaned up and comments updated 2009-12-11 11:55:22 -08:00
u_audio.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
u_audio.h USB: audio gadget: free alsa devices when unloading 2009-12-23 11:34:20 -08:00
u_ether.c USB: gadget: __init and __exit tags removed 2010-05-20 13:21:43 -07:00
u_ether.h USB: Remove unsupported usb gadget drivers 2010-03-02 14:54:57 -08:00
u_phonet.h
u_serial.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
u_serial.h
usbstring.c USB: Gadget: fix UTF conversion in the usbstring library 2009-05-08 19:34:56 -07:00
uvc_queue.c USB gadget: video class function driver 2010-05-20 13:21:41 -07:00
uvc_queue.h USB gadget: video class function driver 2010-05-20 13:21:41 -07:00
uvc_v4l2.c USB gadget: video class function driver 2010-05-20 13:21:41 -07:00
uvc_video.c USB gadget: video class function driver 2010-05-20 13:21:41 -07:00
uvc.h USB gadget: video class function driver 2010-05-20 13:21:41 -07:00
webcam.c USB gadget: Webcam device 2010-05-20 13:21:42 -07:00
zero.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00