linux_dsm_epyc7002/drivers
Andrzej Pietrasiewicz da4243145f usb: gadget: configfs: OS Extended Compatibility descriptors support
Add handling of OS Extended Compatibility descriptors from configfs interface.
Hosts which expect the "OS Descriptors" ask only for configurations @ index 0,
but linux-based USB devices can provide more than one configuration.
This patch adds marking one of gadget's configurations the configuration
to be reported at index 0, regardless of the actual sequence of usb_add_config
invocations used for adding the configurations. The configuration is selected
by creating a symbolic link pointing to it from the "os_desc" directory
located at the top of a gadget's directory hierarchy.

One kind of "OS Descriptors" are "Extended Compatibility Descriptors",
which need to be specified per interface. This patch adds interface.<n>
directory in function's configfs directory to represent each interface
defined by the function. Each interface's directory contains two attributes:
"compatible_id" and "sub_compatible_id", which represent 8-byte
strings to be reported to the host as the "Compatible ID" and "Sub Compatible
ID".

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-05-14 09:39:25 -05:00
..
accessibility
acpi
amba
ata
atm
auxdisplay
base
bcma
block
bluetooth
bus
cdrom
char
clk
clocksource
connector
cpufreq
cpuidle
crypto
dca
devfreq
dio
dma
edac
eisa
extcon
firewire
firmware
fmc
gpio
gpu
hid
hsi
hv
hwmon
hwspinlock
i2c
ide
idle
iio
infiniband
input
iommu
ipack
irqchip
isdn
leds
lguest
macintosh
mailbox
mcb
md
media
memory
memstick
message
mfd
misc
mmc
mtd
net
nfc
ntb
nubus
of
oprofile
parisc
parport
pci
pcmcia
phy
pinctrl
platform
pnp
power
powercap
pps
ps3
ptp
pwm
rapidio
regulator
remoteproc
reset
rpmsg
rtc
s390
sbus
scsi
sfi
sh
sn
spi
spmi
ssb
staging
target
tc
thermal
tty
uio
usb usb: gadget: configfs: OS Extended Compatibility descriptors support 2014-05-14 09:39:25 -05:00
uwb
vfio
vhost
video
virt
virtio
vlynq
vme
w1
watchdog
xen
zorro
Kconfig
Makefile