Rafał Miłecki 0f247626cb usb: core: Introduce a USB port LED trigger ... This commit adds a new trigger responsible for turning on LED when USB device gets connected to the selected USB port. This can can useful for various home routers that have USB port(s) and a proper LED telling user a device is connected. The trigger gets its documentation file but basically it just requires enabling it and selecting USB ports (e.g. echo 1 > ports/usb1-1). There was a long discussion on design of this driver. Its current state is a result of picking them most adjustable solution as others couldn't handle all cases. 1) It wasn't possible for the driver to register separated trigger for each USB port. Some physical USB ports are handled by more than one controller and so by more than one USB port. E.g. USB 2.0 physical port may be handled by OHCI's port and EHCI's port. It's also not possible to assign more than 1 trigger to a single LED and implementing such feature would be tricky due to syncing triggers and sysfs conflicts with old triggers. 2) Another idea was to register trigger per USB hub. This wouldn't allow handling devices with multiple USB LEDs and controllers (hubs) controlling more than 1 physical port. It's common for hubs to have few ports and each may have its own LED. This final trigger is highly flexible. It allows selecting any USB ports for any LED. It was also modified (comparing to the initial version) to allow choosing ports rather than having user /guess/ proper names. It was successfully tested on SmartRG SR400ac which has 3 USB LEDs, 2 physical ports and 3 controllers. It was noted USB subsystem already has usb-gadget and usb-host triggers but they are pretty trivial ones. They indicate activity only and can't have ports specified. In future it may be good idea to consider adding activity support to usbport as well. This should allow switching to this more generic driver and maybe marking old ones as obsolete. This can be implemented with another sysfs file for setting mode. The default mode wouldn't change so there won't be ABI breakage and so such feature can be safely implemented later. There was also an idea of supporting other devices (PCI, SDIO, etc.) but as this driver already contains some USB specific code (and will get more) these should be probably separated drivers (triggers). Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2016-09-27 12:20:17 +02:00
..
ABI	usb: core: Introduce a USB port LED trigger	2016-09-27 12:20:17 +02:00
DocBook	Three fixes for the docs build, including removing an annoying warning on	2016-08-07 10:23:17 -04:00
EDID	…
PCI	treewide: remove references to the now unnecessary DEFINE_PCI_DEVICE_TABLE	2016-09-01 17:52:01 -07:00
RCU	Documentation: Fix spelling mistake	2016-06-14 16:01:00 -07:00
accounting	taskstats: fix nl parsing in accounting/getdelays.c	2016-04-27 12:50:14 -04:00
acpi	Merge branches 'acpi-bus', 'acpi-pci', 'acpica' and 'acpi-doc'	2016-07-25 13:41:25 +02:00
aoe	…
arm	bus: arm-ccn: Correct required arguments for XP PMU events	2016-08-17 11:42:40 +01:00
arm64	arm64: Document workaround for Cortex-A72 erratum #853709	2016-08-17 12:23:47 +02:00
auxdisplay	…
backlight	…
blackfin	…
block	doc: update block/queue-sysfs.txt entries	2016-08-11 09:37:23 -06:00
blockdev	zram: cosmetic: cleanup documentation	2016-07-26 16:19:19 -07:00
bus-devices	…
cdrom	…
cgroup-v1	Three fixes for the docs build, including removing an annoying warning on	2016-08-07 10:23:17 -04:00
cma	…
connector	samples: connector: from Documentation to samples directory	2016-04-28 07:47:35 -06:00
console	…
cpu-freq	cpufreq-stats: Minor documentation fix	2016-09-08 23:05:07 +02:00
cpuidle	…
cris	…
crypto	crypto: doc - Fix typo	2016-05-31 16:41:55 +08:00
development-process	docs: deprecate kernel-doc-nano-HOWTO.txt	2016-07-20 16:45:37 -06:00
device-mapper	block: rename bio bi_rw to bi_opf	2016-08-07 14:41:02 -06:00
devicetree	Merge 4.8-rc7 into usb-next	2016-09-19 09:12:41 +02:00
dmaengine	Documentation: dmaengine: fix typo for device_resume	2016-06-03 14:00:21 -06:00
driver-model	ARM: SoC driver updates for v4.8	2016-08-01 18:36:01 -04:00
early-userspace	…
extcon	…
fault-injection	…
fb	Documentation: fb: fix spelling mistakes	2016-05-10 12:05:27 +03:00
features	powerpc: Add HAVE_PERF_USER_STACK_DUMP support	2016-05-11 21:54:05 +10:00
filesystems	ovl: update doc	2016-09-01 11:12:00 +02:00
firmware_class	Documentation: fix common spelling mistakes	2016-04-28 07:51:59 -06:00
fmc	…
fpga	…
frv	…
gpio	gpio: Fix paths to GPIO driver source files	2016-06-13 09:30:31 +02:00
gpu	drm: add generic zpos property	2016-07-29 09:59:30 +02:00
hid	HID: add Alps I2C HID Touchpad-Stick support	2016-06-17 23:12:04 +02:00
hwmon	hwmon: (ftsteutates) Correct ftp urls in driver documentation	2016-08-12 05:56:34 -07:00
i2c	Documentation: i2c: slave-interface: add note for driver development	2016-09-08 16:57:14 +02:00
ia64	…
ide	…
iio	…
infiniband	Round two of 4.7 merge window patches	2016-05-28 11:04:16 -07:00
input	Input: clarify we want BTN_TOOL_<name> on proximity	2016-04-06 10:23:09 -07:00
ioctl	nilfs2: move ioctl interface and disk layout to uapi separately	2016-08-02 19:35:21 -04:00
isdn	isdn: i4l: move active-isdn drivers to staging	2016-03-05 15:00:38 -08:00
ja_JP	Documentatio: HOWTO: remove regression postings info from translations	2016-04-16 10:49:08 -06:00
kbuild	kbuild, x86: Track generated headers with generated-y	2016-07-07 15:58:44 +02:00
kdump	kdump: fix dmesg gdbmacro to work with record based printk	2016-06-03 15:06:22 -07:00
ko_KR	Documentation: HOWTO: update git home URL in translations	2016-04-16 10:49:18 -06:00
laptops	leds: documentation: 'ide-disk' to 'disk-activity'	2016-06-27 08:58:35 +02:00
leds	usb: core: Introduce a USB port LED trigger	2016-09-27 12:20:17 +02:00
livepatch	Merge branches 'for-4.7/core', 'for-4.7/livepatching-doc' and 'for-4.7/livepatching-ppc64' into for-linus	2016-05-17 12:06:35 +02:00
locking	locking/Documentation/lockdep: Fix spelling mistakes	2016-04-28 10:40:57 +02:00
m68k	…
media	[media] cx23885-cardlist.rst: add a new card	2016-07-23 08:14:48 -03:00
memory-devices	…
metag	…
mic	mpssd: fix buffer overflow warning	2016-06-03 13:31:37 -06:00
mips	…
misc-devices	Merge char-misc-next into staging-next	2016-02-22 14:46:24 -08:00
mmc	mmc: core: Extend sysfs with DSR register	2016-07-25 10:34:51 +02:00
mn10300	…
mtd	…
namespaces	…
netlabel	…
networking	Documentation: networking: dsa: Remove platform device TODO	2016-08-28 23:43:06 -04:00
nfc	…
nios2	…
nvdimm	libnvdimm, btt: update the usage section in Documentation	2016-06-17 16:23:23 -07:00
nvmem	…
parisc	…
pcmcia	…
phy	…
platform	…
power	PM / sleep: Update some system sleep documentation	2016-08-13 02:54:04 +02:00
powerpc	powerpc: signals: Discard transaction state from signal frames	2016-08-29 12:48:40 +10:00
pps	Documentation: pps: fix spelling mistake	2016-04-28 07:23:59 -06:00
prctl	Documentation: Fix int/unsigned int comparison	2016-02-17 14:09:43 -07:00
pti	…
ptp	Another relatively boring cycle for the docs tree: typo fixes, translation	2016-03-17 12:09:35 -07:00
rapidio	rapidio/documentation/mport_cdev: add missing parameter description	2016-09-01 17:52:02 -07:00
s390	s390/Documentation: improve sort command for trace buffer	2016-06-13 15:58:23 +02:00
scheduler	Documenation: update cgroup's document path	2016-08-03 15:43:58 -06:00
scsi	Merge remote-tracking branch 'mkp-scsi/4.7/scsi-fixes' into fixes	2016-06-18 11:59:01 -07:00
security	Some big changes this month, headlined by the addition of a new formatted	2016-07-26 13:05:11 -07:00
serial	TTY and Serial driver update for 4.7-rc1	2016-05-20 20:57:27 -07:00
sh	…
sound	ASoC: Updates for v4.8	2016-07-26 10:35:31 +02:00
sphinx	Merge branch 'docs-next' of git://git.lwn.net/linux into topic/docs-next	2016-07-23 07:55:59 -03:00
sphinx-static	doc-rst: customize RTD theme, drop padding of inline literal	2016-08-14 12:15:09 -06:00
spi	…
sysctl	printk: add kernel parameter to control writes to /dev/kmsg	2016-08-02 19:35:06 -04:00
target	target: make close_session optional	2016-05-10 01:19:26 -07:00
thermal	Doc: PM: Fix a typo in intel_powerclamp.txt	2016-06-30 13:05:40 -06:00
timers	Documentation: fix common spelling mistakes	2016-04-28 07:51:59 -06:00
tpm	tpm: Add documentation for the tpm_vtpm_proxy device driver	2016-06-25 17:26:35 +03:00
trace	tracing: expose current->comm to [ku]probe events	2016-06-20 09:54:19 -04:00
usb	Documentation: tiny typo fix in usb/gadget_multi.txt	2016-06-23 08:09:10 -06:00
vDSO	…
virtual	KVM: documentation: fix KVM_CAP_X2APIC_API information	2016-08-04 14:01:21 +02:00
vm	Three fixes for the docs build, including removing an annoying warning on	2016-08-07 10:23:17 -04:00
w1	w1: add ability to set (SRAM) and store (EEPROM) configuration for temp sensors like DS18B20	2016-05-01 14:37:49 -07:00
watchdog	Documentation/watchdog: check return value for magic close	2016-07-25 11:02:17 +02:00
wimax	…
x86	Three fixes for the docs build, including removing an annoying warning on	2016-08-07 10:23:17 -04:00
xtensa	…
zh_CN	docs: deprecate kernel-doc-nano-HOWTO.txt	2016-07-20 16:45:37 -06:00
.gitignore	Add .pyc files to .gitignore	2016-06-30 13:07:33 -06:00
00-INDEX	docs: deprecate kernel-doc-nano-HOWTO.txt	2016-07-20 16:45:37 -06:00
BUG-HUNTING	…
Changes	…
CodeOfConflict	…
CodingStyle	docs: deprecate kernel-doc-nano-HOWTO.txt	2016-07-20 16:45:37 -06:00
DMA-API-HOWTO.txt	…
DMA-API.txt	dma-mapping: use unsigned long for dma_attrs	2016-08-04 08:50:07 -04:00
DMA-ISA-LPC.txt	…
DMA-attributes.txt	dma-mapping: use unsigned long for dma_attrs	2016-08-04 08:50:07 -04:00
HOWTO	Documentation: Howto: Fixed subtitles style	2016-03-09 15:30:03 -07:00
IPMI.txt	…
IRQ-affinity.txt	…
IRQ-domain.txt	Documentation/IRQ-domain.txt: Document irq_domain_create_{linear, tree}	2016-03-31 00:32:59 -06:00
IRQ.txt	…
Intel-IOMMU.txt	…
Makefile	[media] samples: v4l: from Documentation to samples directory	2016-05-09 18:34:37 -03:00
Makefile.sphinx	Three fixes for the docs build, including removing an annoying warning on	2016-08-07 10:23:17 -04:00
ManagementStyle	…
SAK.txt	…
SM501.txt	…
SecurityBugs	…
SubmitChecklist	…
SubmittingDrivers	…
SubmittingPatches	…
VGA-softcursor.txt	…
adding-syscalls.txt	documentation: trivial typo: adding-syscalls.txt: s/statat/fstatat/	2016-04-18 11:31:49 -06:00
applying-patches.txt	…
assoc_array.txt	…
atomic_ops.txt	…
bad_memory.txt	…
basic_profiling.txt	…
bcache.txt	bcache: documentation formatting, edited for clarity, stripe alignment notes	2016-06-23 07:58:38 -06:00
binfmt_misc.txt	binfmt_misc: add F option description to documentation	2016-03-30 14:12:22 -07:00
braille-console.txt	…
bt8xxgpio.txt	…
btmrvl.txt	…
bus-virt-phys-mapping.txt	…
cachetlb.txt	…
cec.txt	[media] cec.txt: add CEC framework documentation	2016-06-22 08:36:50 -03:00
cgroup-v2.txt	Merge branch 'for-4.6-ns' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2016-03-21 10:05:13 -07:00
circular-buffers.txt	…
clk.txt	…
coccinelle.txt	coccicheck: refer to Documentation/coccinelle.txt and wiki	2016-07-22 12:13:39 +02:00
conf.py	docs: Set the Sphinx default highlight language to "guess"	2016-08-12 14:11:12 -06:00
cpu-hotplug.txt	…
cpu-load.txt	…
cputopology.txt	topology/sysfs: provide drawer id and siblings attributes	2016-06-13 15:58:27 +02:00
crc32.txt	…
dcdbas.txt	…
debugging-modules.txt	…
debugging-via-ohci1394.txt	…
dell_rbu.txt	…
devices.txt	Documentation: update the devices.txt documentation	2016-03-29 10:11:44 -07:00
digsig.txt	…
dma-buf-sharing.txt	dma-buf: Update docs for SYNC ioctl	2016-03-21 09:26:45 +01:00
dontdiff	GCC plugin infrastructure	2016-06-07 22:57:10 +02:00
dynamic-debug-howto.txt	…
edac.txt	…
efi-stub.txt	…
eisa.txt	…
email-clients.txt	…
flexible-arrays.txt	…
futex-requeue-pi.txt	…
gcc-plugins.txt	GCC plugin infrastructure	2016-06-07 22:57:10 +02:00
gcov.txt	…
gdb-kernel-debugging.txt	Revert "scripts/gdb: add documentation example for radix tree"	2016-07-15 14:54:27 +09:00
highuid.txt	…
hsi.txt	…
hw_random.txt	…
hwspinlock.txt	…
index.rst	Merge tag 'drm-for-v4.8' of git://people.freedesktop.org/~airlied/linux	2016-08-01 21:44:08 -04:00
init.txt	…
initrd.txt	…
intel_txt.txt	…
io-mapping.txt	…
io_ordering.txt	…
iostats.txt	…
irqflags-tracing.txt	…
isa.txt	Documentation: Add ISA bus driver documentation	2016-05-02 09:32:04 -07:00
isapnp.txt	…
java.txt	…
kasan.txt	mm, kasan: SLAB support	2016-03-25 16:37:42 -07:00
kcov.txt	kernel: add kcov code coverage	2016-03-22 15:36:02 -07:00
kernel-doc-nano-HOWTO.txt	docs: deprecate kernel-doc-nano-HOWTO.txt	2016-07-20 16:45:37 -06:00
kernel-docs.txt	Documentation: update Michael K. Johnson's work	2016-04-15 15:37:25 -06:00
kernel-documentation.rst	docs: kernel-documentation: remove some highlight directives	2016-08-12 15:12:36 -06:00
kernel-parameters.txt	scsi: introduce a quirk for false cache reporting	2016-09-13 08:08:24 +02:00
kernel-per-CPU-kthreads.txt	Documenation: update cgroup's document path	2016-08-03 15:43:58 -06:00
kmemcheck.txt	…
kmemleak.txt	…
kobject.txt	…
kprobes.txt	…
kref.txt	…
kselftest.txt	Documentation: kselftest: Remove duplicate word	2016-03-09 15:33:38 -07:00
ldm.txt	…
local_ops.txt	…
lockup-watchdogs.txt	…
logo.gif	…
logo.txt	…
lzo.txt	Documentation: lzo: fix spelling mistakes	2016-04-28 07:23:11 -06:00
magic-number.txt	…
mailbox.txt	…
md-cluster.txt	md-cluster: change array_sectors and update size are not supported	2016-05-04 12:39:35 -07:00
md.txt	Documentation: fix wrong value in md.txt	2016-06-23 08:08:36 -06:00
memory-barriers.txt	locking/Documentation: Clarify limited control-dependency scope	2016-06-17 09:54:45 +02:00
memory-hotplug.txt	memory_hotplug: introduce CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE	2016-05-19 19:12:14 -07:00
men-chameleon-bus.txt	…
module-signing.txt	Documentation/module-signing.txt: Note need for version info if reusing a key	2016-07-27 12:38:00 +09:30
mono.txt	…
nommu-mmap.txt	…
ntb.txt	…
numastat.txt	…
oops-tracing.txt	…
padata.txt	…
parport-lowlevel.txt	…
parport.txt	…
percpu-rw-semaphore.txt	…
phy.txt	phy: core: Allow children node to be overridden	2016-04-29 16:39:39 +02:00
pi-futex.txt	…
pinctrl.txt	pinctrl: Flag strict is a field in struct pinmux_ops	2016-06-23 10:50:10 +02:00
pnp.txt	…
preempt-locking.txt	…
printk-formats.txt	mm, printk: introduce new format string for flags	2016-03-15 16:55:16 -07:00
pwm.txt	pwm: Update documentation	2016-05-17 14:48:04 +02:00
ramoops.txt	ramoops: use DT reserved-memory bindings	2016-08-05 11:21:36 -07:00
rbtree.txt	…
remoteproc.txt	…
rfkill.txt	rfkill: Add documentation about LED triggers	2016-02-24 09:13:12 +01:00
robust-futex-ABI.txt	…
robust-futexes.txt	Documentation: robust-futexes: fix spelling mistakes	2016-04-28 07:26:41 -06:00
rpmsg.txt	rpmsg: use module_rpmsg_driver in existing drivers and examples	2016-05-06 11:09:01 -07:00
rtc.txt	rtc: implement a sysfs interface for clock offset	2016-03-14 17:08:16 +01:00
serial-console.txt	…
sgi-ioc4.txt	…
smsc_ece1099.txt	…
sparse.txt	…
stable_api_nonsense.txt	…
stable_kernel_rules.txt	…
static-keys.txt	…
svga.txt	…
sync_file.txt	Documentation: Fix some grammar mistakes in sync_file.txt	2016-06-03 13:24:16 -06:00
sysfs-rules.txt	…
sysrq.txt	Doc: correct the location of sysrq.c	2016-04-28 08:02:36 -06:00
this_cpu_ops.txt	…
ubsan.txt	…
unaligned-memory-access.txt	…
unicode.txt	…
unshare.txt	…
vfio.txt	…
vgaarbiter.txt	…
video-output.txt	…
vme_api.txt	…
volatile-considered-harmful.txt	…
workqueue.txt	workqueue: Fix a typo in workqueue.txt	2016-07-06 02:37:38 -06:00
xillybus.txt	Documentation: xillybus: fix spelling mistake	2016-04-28 07:44:54 -06:00
xz.txt	…
zorro.txt	…