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linux/Documentation/ABI/testing
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Janusz Krzysztofik 9f9455ae71 leds: add output inversion option to backlight trigger 
Extend the LED backlight tirgger driver with an option that allows for
inverting the trigger output polarity.

With the invertion option provided, I (ab)use the backlight trigger for
driving a LED that indicates LCD display blank condtition on my Amstrad
Delta videophone.  Since the machine has no dedicated power LED, it was
not possible to distinguish if the display was blanked, or the machine was
turned off, without touching it.

The invert sysfs control is patterned after a similiar function of the GPIO
trigger driver.

[akpm@linux-foundation.org: make output match input, tighten input checking]
[akpm@linux-foundation.org: make output match input, tighten input checking]
Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:06 -08:00
..
debugfs-ec Documentation: Add new /sys/kernel/debug/ec/* files to ABI 2010-08-03 09:49:07 -04:00
debugfs-pktcdvd doc: use correct debugfs mountpoint 2009-04-13 15:04:33 -07:00
ima_policy ima: rename PATH_CHECK to FILE_CHECK 2010-02-07 03:06:23 -05:00
procfs-diskstats tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
sysfs-ata [libata] Add ATA transport class 2010-10-21 20:21:03 -04:00
sysfs-block block: Added in stricter no merge semantics for block I/O 2010-01-29 09:04:08 +01:00
sysfs-block-zram Staging: zram: Document sysfs entries 2010-08-31 15:34:36 -07:00
sysfs-bus-css
sysfs-bus-i2c-devices-hm6352 hmc6352: add driver for the HMC6352 compass 2010-08-09 20:45:10 -07:00
sysfs-bus-pci PCI: export SMBIOS provided firmware instance and label to sysfs 2010-07-30 09:36:01 -07:00
sysfs-bus-pci-devices-cciss cciss: Add usage_count attribute to each logical drive in /sys 2009-10-01 21:15:44 +02:00
sysfs-bus-rbd rbd: replace the rbd sysfs interface 2010-12-01 15:53:22 -08:00
sysfs-bus-umc uwb: document UWB and WUSB sysfs files 2008-09-17 16:54:35 +01:00
sysfs-bus-usb USB: deprecate the power/level sysfs attribute 2010-05-20 13:21:37 -07:00
sysfs-bus-usb-devices-usbsevseg USB: Added driver for a Delcom USB 7-segment LED Display 2008-10-17 14:40:51 -07:00
sysfs-c2port Add c2 port support 2008-11-12 17:17:18 -08:00
sysfs-class
sysfs-class-bdi
sysfs-class-lcd video/lcd: document sysfs interface 2009-08-28 15:21:12 -04:00
sysfs-class-led leds: add output inversion option to backlight trigger 2011-01-13 08:03:06 -08:00
sysfs-class-mtd Documentation: add MTD sysfs docs 2009-05-29 15:13:04 +01:00
sysfs-class-net-batman-adv net: Add batman-adv meshing protocol 2010-12-16 13:44:24 -08:00
sysfs-class-net-mesh net: Add batman-adv meshing protocol 2010-12-16 13:44:24 -08:00
sysfs-class-pktcdvd
sysfs-class-power ds2760_battery: Document ABI change 2010-05-19 12:25:39 +04:00
sysfs-class-regulator regulator: add get_status() 2009-03-31 09:56:20 +01:00
sysfs-class-uwb_rc uwb: add basic radio manager 2008-11-19 14:46:33 +00:00
sysfs-class-uwb_rc-wusbhc USB: wusb: add wusb_phy_rate sysfs file to host controllers 2009-12-11 11:55:16 -08:00
sysfs-dev
sysfs-devices
sysfs-devices-memory Documentation: update broken web addresses. 2010-08-04 15:21:40 +02:00
sysfs-devices-node mm: compaction: add /sys trigger for per-node memory compaction 2010-05-25 08:06:59 -07:00
sysfs-devices-platform-_UDC_-gadget USB: gadget: storage: optional SCSI WRITE FUA bit 2010-08-10 14:35:42 -07:00
sysfs-devices-power PM / Runtime: Implement autosuspend support 2010-10-17 01:57:48 +02:00
sysfs-devices-system-cpu Documentation: update broken web addresses. 2010-08-04 15:21:40 +02:00
sysfs-devices-system-ibm-rtl IBM Real-Time "SMI Free" mode driver -v7 2010-10-21 10:10:46 -04:00
sysfs-driver-hid-picolcd HID: split picolcd's operation_mode sysfs attribute 2010-04-27 15:31:26 +02:00
sysfs-driver-hid-prodikeys HID: Prodikeys PC-MIDI HID Driver 2010-05-12 15:18:59 +02:00
sysfs-driver-hid-roccat-kone HID: roccat: Update sysfs attribute doc 2011-01-08 01:18:44 +01:00
sysfs-driver-hid-roccat-koneplus HID: roccat: Update sysfs attribute doc 2011-01-08 01:18:44 +01:00
sysfs-driver-hid-roccat-pyra HID: roccat: Update sysfs attribute doc 2011-01-08 01:18:44 +01:00
sysfs-firmware-acpi ACPI: add /sys/firmware/acpi/interrupts/sci_not counter 2009-04-21 00:35:47 -04:00
sysfs-firmware-memmap Bernhard has moved 2009-02-18 15:37:56 -08:00
sysfs-firmware-sfi SFI: add sysfs interface for SFI tables. 2010-05-27 12:46:20 -04:00
sysfs-firmware-sgi_uv sysfs: document files in /sys/firmware/sgi_uv/ 2008-09-02 19:21:40 -07:00
sysfs-fs-ext4 ext4: teach the inode allocator to use a goal inode number 2009-06-13 11:45:35 -04:00
sysfs-gpio gpiolib: allow poll() on value 2009-09-23 07:39:48 -07:00
sysfs-i2c-bmp085 drivers/misc: support for the pressure sensor BMP085 from Bosch Sensortec 2010-08-09 20:45:05 -07:00
sysfs-ibft
sysfs-kernel-mm
sysfs-kernel-mm-hugepages
sysfs-kernel-slab slub: allow stats to be cleared 2009-10-15 21:34:12 +03:00
sysfs-kernel-uids
sysfs-memory-page-offline HWPOISON: Add soft page offline support 2009-12-16 12:20:00 +01:00
sysfs-module add Packet hub driver for Topcliff Platform controller hub 2010-10-22 10:16:42 -07:00
sysfs-ocfs2
sysfs-platform-asus-laptop asus-laptop: add wimax and wwan support 2010-11-24 12:00:15 -05:00
sysfs-platform-eeepc-laptop eeepc-laptop: set the right paths in the documentation 2010-02-28 19:30:57 +01:00
sysfs-platform-eeepc-wmi eeepc-wmi: add cpufv sysfs documentation 2010-11-24 11:59:43 -05:00
sysfs-platform-ideapad-laptop ideapad: let camera power control entry under platform driver 2011-01-07 17:03:46 -05:00
sysfs-power PM: Add sysfs attr for rechecking dev hash from PM trace 2010-10-17 01:57:50 +02:00
sysfs-pps LinuxPPS: core support 2009-06-18 13:04:04 -07:00
sysfs-profiling profiling: dynamically enable readprofile at runtime 2008-10-16 11:21:31 -07:00
sysfs-tty tty: add 'active' sysfs attribute to tty0 and console device 2010-12-16 16:15:34 -08:00
sysfs-wacom HID: wacom: add ABI doc entry for speed attribute 2010-04-23 02:14:10 +02:00
sysfs-wusb_cbaf uwb: document UWB and WUSB sysfs files 2008-09-17 16:54:35 +01:00