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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /Documentation/ABI/testing
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'Documentation/ABI/testing')
-rw-r--r--Documentation/ABI/testing/configfs-spear-pcie-gadget31
-rw-r--r--Documentation/ABI/testing/debugfs-ec20
-rw-r--r--Documentation/ABI/testing/debugfs-ideapad19
-rw-r--r--Documentation/ABI/testing/debugfs-pktcdvd19
-rw-r--r--Documentation/ABI/testing/evm23
-rw-r--r--Documentation/ABI/testing/ima_policy61
-rw-r--r--Documentation/ABI/testing/procfs-diskstats22
-rw-r--r--Documentation/ABI/testing/pstore47
-rw-r--r--Documentation/ABI/testing/sysfs-ata99
-rw-r--r--Documentation/ABI/testing/sysfs-block208
-rw-r--r--Documentation/ABI/testing/sysfs-block-zram99
-rw-r--r--Documentation/ABI/testing/sysfs-bus-bcma31
-rw-r--r--Documentation/ABI/testing/sysfs-bus-css35
-rw-r--r--Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa948021
-rw-r--r--Documentation/ABI/testing/sysfs-bus-i2c-devices-hm635221
-rw-r--r--Documentation/ABI/testing/sysfs-bus-media6
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci212
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci-devices-cciss80
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd46
-rw-r--r--Documentation/ABI/testing/sysfs-bus-rbd76
-rw-r--r--Documentation/ABI/testing/sysfs-bus-umc28
-rw-r--r--Documentation/ABI/testing/sysfs-bus-usb184
-rw-r--r--Documentation/ABI/testing/sysfs-bus-usb-devices-usbsevseg43
-rw-r--r--Documentation/ABI/testing/sysfs-c2port88
-rw-r--r--Documentation/ABI/testing/sysfs-class16
-rw-r--r--Documentation/ABI/testing/sysfs-class-backlight-driver-adp887056
-rw-r--r--Documentation/ABI/testing/sysfs-class-bdi50
-rw-r--r--Documentation/ABI/testing/sysfs-class-devfreq52
-rw-r--r--Documentation/ABI/testing/sysfs-class-lcd23
-rw-r--r--Documentation/ABI/testing/sysfs-class-led37
-rw-r--r--Documentation/ABI/testing/sysfs-class-mtd125
-rw-r--r--Documentation/ABI/testing/sysfs-class-net-batman-adv14
-rw-r--r--Documentation/ABI/testing/sysfs-class-net-mesh77
-rw-r--r--Documentation/ABI/testing/sysfs-class-pktcdvd72
-rw-r--r--Documentation/ABI/testing/sysfs-class-power20
-rw-r--r--Documentation/ABI/testing/sysfs-class-regulator351
-rw-r--r--Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration12
-rw-r--r--Documentation/ABI/testing/sysfs-class-scsi_host13
-rw-r--r--Documentation/ABI/testing/sysfs-class-uwb_rc146
-rw-r--r--Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc38
-rw-r--r--Documentation/ABI/testing/sysfs-dev20
-rw-r--r--Documentation/ABI/testing/sysfs-devices25
-rw-r--r--Documentation/ABI/testing/sysfs-devices-memory85
-rw-r--r--Documentation/ABI/testing/sysfs-devices-mmc21
-rw-r--r--Documentation/ABI/testing/sysfs-devices-node7
-rw-r--r--Documentation/ABI/testing/sysfs-devices-platform-_UDC_-gadget21
-rw-r--r--Documentation/ABI/testing/sysfs-devices-platform-docg334
-rw-r--r--Documentation/ABI/testing/sysfs-devices-power167
-rw-r--r--Documentation/ABI/testing/sysfs-devices-system-cpu203
-rw-r--r--Documentation/ABI/testing/sysfs-devices-system-ibm-rtl22
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid10
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff7
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-multitouch9
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-picolcd43
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-prodikeys29
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-roccat-arvo53
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-roccat-isku135
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-roccat-kone106
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus120
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-roccat-kovaplus100
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-roccat-pyra107
-rw-r--r--Documentation/ABI/testing/sysfs-driver-hid-wiimote22
-rw-r--r--Documentation/ABI/testing/sysfs-driver-samsung-laptop19
-rw-r--r--Documentation/ABI/testing/sysfs-driver-wacom73
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-acpi150
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-dmi110
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-gsmi58
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-log7
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-memmap71
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-sfi15
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-sgi_uv27
-rw-r--r--Documentation/ABI/testing/sysfs-fs-ext498
-rw-r--r--Documentation/ABI/testing/sysfs-gpio27
-rw-r--r--Documentation/ABI/testing/sysfs-i2c-bmp08531
-rw-r--r--Documentation/ABI/testing/sysfs-ibft23
-rw-r--r--Documentation/ABI/testing/sysfs-kernel-fscaps8
-rw-r--r--Documentation/ABI/testing/sysfs-kernel-mm6
-rw-r--r--Documentation/ABI/testing/sysfs-kernel-mm-cleancache11
-rw-r--r--Documentation/ABI/testing/sysfs-kernel-mm-hugepages15
-rw-r--r--Documentation/ABI/testing/sysfs-kernel-slab490
-rw-r--r--Documentation/ABI/testing/sysfs-kernel-uids14
-rw-r--r--Documentation/ABI/testing/sysfs-memory-page-offline44
-rw-r--r--Documentation/ABI/testing/sysfs-module51
-rw-r--r--Documentation/ABI/testing/sysfs-ocfs289
-rw-r--r--Documentation/ABI/testing/sysfs-platform-asus-laptop66
-rw-r--r--Documentation/ABI/testing/sysfs-platform-asus-wmi31
-rw-r--r--Documentation/ABI/testing/sysfs-platform-at9125
-rw-r--r--Documentation/ABI/testing/sysfs-platform-eeepc-laptop50
-rw-r--r--Documentation/ABI/testing/sysfs-platform-ideapad-laptop8
-rw-r--r--Documentation/ABI/testing/sysfs-platform-kim48
-rw-r--r--Documentation/ABI/testing/sysfs-power174
-rw-r--r--Documentation/ABI/testing/sysfs-pps73
-rw-r--r--Documentation/ABI/testing/sysfs-profiling13
-rw-r--r--Documentation/ABI/testing/sysfs-ptp98
-rw-r--r--Documentation/ABI/testing/sysfs-tty19
-rw-r--r--Documentation/ABI/testing/sysfs-wusb_cbaf100
96 files changed, 6109 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/configfs-spear-pcie-gadget b/Documentation/ABI/testing/configfs-spear-pcie-gadget
new file mode 100644
index 00000000000..875988146a6
--- /dev/null
+++ b/Documentation/ABI/testing/configfs-spear-pcie-gadget
@@ -0,0 +1,31 @@
+What: /config/pcie-gadget
+Date: Feb 2011
+KernelVersion: 2.6.37
+Contact: Pratyush Anand <pratyush.anand@st.com>
+Description:
+
+ Interface is used to configure selected dual mode PCIe controller
+ as device and then program its various registers to configure it
+ as a particular device type.
+ This interfaces can be used to show spear's PCIe device capability.
+
+ Nodes are only visible when configfs is mounted. To mount configfs
+ in /config directory use:
+ # mount -t configfs none /config/
+
+ For nth PCIe Device Controller
+ /config/pcie-gadget.n/
+ link ... used to enable ltssm and read its status.
+ int_type ...used to configure and read type of supported
+ interrupt
+ no_of_msi ... used to configure number of MSI vector needed and
+ to read no of MSI granted.
+ inta ... write 1 to assert INTA and 0 to de-assert.
+ send_msi ... write MSI vector to be sent.
+ vendor_id ... used to write and read vendor id (hex)
+ device_id ... used to write and read device id (hex)
+ bar0_size ... used to write and read bar0_size
+ bar0_address ... used to write and read bar0 mapped area in hex.
+ bar0_rw_offset ... used to write and read offset of bar0 where
+ bar0_data will be written or read.
+ bar0_data ... used to write and read data at bar0_rw_offset.
diff --git a/Documentation/ABI/testing/debugfs-ec b/Documentation/ABI/testing/debugfs-ec
new file mode 100644
index 00000000000..6546115a94d
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-ec
@@ -0,0 +1,20 @@
+What: /sys/kernel/debug/ec/*/{gpe,use_global_lock,io}
+Date: July 2010
+Contact: Thomas Renninger <trenn@suse.de>
+Description:
+
+General information like which GPE is assigned to the EC and whether
+the global lock should get used.
+Knowing the EC GPE one can watch the amount of HW events related to
+the EC here (XY -> GPE number from /sys/kernel/debug/ec/*/gpe):
+/sys/firmware/acpi/interrupts/gpeXY
+
+The io file is binary and a userspace tool located here:
+ftp://ftp.suse.com/pub/people/trenn/sources/ec/
+should get used to read out the 256 Embedded Controller registers
+or writing to them.
+
+CAUTION: Do not write to the Embedded Controller if you don't know
+what you are doing! Rebooting afterwards also is a good idea.
+This can influence the way your machine is cooled and fans may
+not get switched on again after you did a wrong write.
diff --git a/Documentation/ABI/testing/debugfs-ideapad b/Documentation/ABI/testing/debugfs-ideapad
new file mode 100644
index 00000000000..7079c0b2103
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-ideapad
@@ -0,0 +1,19 @@
+What: /sys/kernel/debug/ideapad/cfg
+Date: Sep 2011
+KernelVersion: 3.2
+Contact: Ike Panhc <ike.pan@canonical.com>
+Description:
+
+cfg shows the return value of _CFG method in VPC2004 device. It tells machine
+capability and what graphic component within the machine.
+
+
+What: /sys/kernel/debug/ideapad/status
+Date: Sep 2011
+KernelVersion: 3.2
+Contact: Ike Panhc <ike.pan@canonical.com>
+Description:
+
+status shows infos we can read and tells its meaning and value.
+
+
diff --git a/Documentation/ABI/testing/debugfs-pktcdvd b/Documentation/ABI/testing/debugfs-pktcdvd
new file mode 100644
index 00000000000..cf11736acb7
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-pktcdvd
@@ -0,0 +1,19 @@
+What: /sys/kernel/debug/pktcdvd/pktcdvd[0-7]
+Date: Oct. 2006
+KernelVersion: 2.6.20
+Contact: Thomas Maier <balagi@justmail.de>
+Description:
+
+debugfs interface
+-----------------
+
+The pktcdvd module (packet writing driver) creates
+these files in debugfs:
+
+/sys/kernel/debug/pktcdvd/pktcdvd[0-7]/
+ info (0444) Lots of driver statistics and infos.
+
+Example:
+-------
+
+cat /sys/kernel/debug/pktcdvd/pktcdvd0/info
diff --git a/Documentation/ABI/testing/evm b/Documentation/ABI/testing/evm
new file mode 100644
index 00000000000..8374d4557e5
--- /dev/null
+++ b/Documentation/ABI/testing/evm
@@ -0,0 +1,23 @@
+What: security/evm
+Date: March 2011
+Contact: Mimi Zohar <zohar@us.ibm.com>
+Description:
+ EVM protects a file's security extended attributes(xattrs)
+ against integrity attacks. The initial method maintains an
+ HMAC-sha1 value across the extended attributes, storing the
+ value as the extended attribute 'security.evm'.
+
+ EVM depends on the Kernel Key Retention System to provide it
+ with a trusted/encrypted key for the HMAC-sha1 operation.
+ The key is loaded onto the root's keyring using keyctl. Until
+ EVM receives notification that the key has been successfully
+ loaded onto the keyring (echo 1 > <securityfs>/evm), EVM
+ can not create or validate the 'security.evm' xattr, but
+ returns INTEGRITY_UNKNOWN. Loading the key and signaling EVM
+ should be done as early as possible. Normally this is done
+ in the initramfs, which has already been measured as part
+ of the trusted boot. For more information on creating and
+ loading existing trusted/encrypted keys, refer to:
+ Documentation/keys-trusted-encrypted.txt. (A sample dracut
+ patch, which loads the trusted/encrypted key and enables
+ EVM, is available from http://linux-ima.sourceforge.net/#EVM.)
diff --git a/Documentation/ABI/testing/ima_policy b/Documentation/ABI/testing/ima_policy
new file mode 100644
index 00000000000..6cd6daefaae
--- /dev/null
+++ b/Documentation/ABI/testing/ima_policy
@@ -0,0 +1,61 @@
+What: security/ima/policy
+Date: May 2008
+Contact: Mimi Zohar <zohar@us.ibm.com>
+Description:
+ The Trusted Computing Group(TCG) runtime Integrity
+ Measurement Architecture(IMA) maintains a list of hash
+ values of executables and other sensitive system files
+ loaded into the run-time of this system. At runtime,
+ the policy can be constrained based on LSM specific data.
+ Policies are loaded into the securityfs file ima/policy
+ by opening the file, writing the rules one at a time and
+ then closing the file. The new policy takes effect after
+ the file ima/policy is closed.
+
+ rule format: action [condition ...]
+
+ action: measure | dont_measure
+ condition:= base | lsm
+ base: [[func=] [mask=] [fsmagic=] [uid=]]
+ lsm: [[subj_user=] [subj_role=] [subj_type=]
+ [obj_user=] [obj_role=] [obj_type=]]
+
+ base: func:= [BPRM_CHECK][FILE_MMAP][FILE_CHECK]
+ mask:= [MAY_READ] [MAY_WRITE] [MAY_APPEND] [MAY_EXEC]
+ fsmagic:= hex value
+ uid:= decimal value
+ lsm: are LSM specific
+
+ default policy:
+ # PROC_SUPER_MAGIC
+ dont_measure fsmagic=0x9fa0
+ # SYSFS_MAGIC
+ dont_measure fsmagic=0x62656572
+ # DEBUGFS_MAGIC
+ dont_measure fsmagic=0x64626720
+ # TMPFS_MAGIC
+ dont_measure fsmagic=0x01021994
+ # SECURITYFS_MAGIC
+ dont_measure fsmagic=0x73636673
+
+ measure func=BPRM_CHECK
+ measure func=FILE_MMAP mask=MAY_EXEC
+ measure func=FILE_CHECK mask=MAY_READ uid=0
+
+ The default policy measures all executables in bprm_check,
+ all files mmapped executable in file_mmap, and all files
+ open for read by root in do_filp_open.
+
+ Examples of LSM specific definitions:
+
+ SELinux:
+ # SELINUX_MAGIC
+ dont_measure fsmagic=0xF97CFF8C
+
+ dont_measure obj_type=var_log_t
+ dont_measure obj_type=auditd_log_t
+ measure subj_user=system_u func=FILE_CHECK mask=MAY_READ
+ measure subj_role=system_r func=FILE_CHECK mask=MAY_READ
+
+ Smack:
+ measure subj_user=_ func=FILE_CHECK mask=MAY_READ
diff --git a/Documentation/ABI/testing/procfs-diskstats b/Documentation/ABI/testing/procfs-diskstats
new file mode 100644
index 00000000000..f91a973a37f
--- /dev/null
+++ b/Documentation/ABI/testing/procfs-diskstats
@@ -0,0 +1,22 @@
+What: /proc/diskstats
+Date: February 2008
+Contact: Jerome Marchand <jmarchan@redhat.com>
+Description:
+ The /proc/diskstats file displays the I/O statistics
+ of block devices. Each line contains the following 14
+ fields:
+ 1 - major number
+ 2 - minor mumber
+ 3 - device name
+ 4 - reads completed successfully
+ 5 - reads merged
+ 6 - sectors read
+ 7 - time spent reading (ms)
+ 8 - writes completed
+ 9 - writes merged
+ 10 - sectors written
+ 11 - time spent writing (ms)
+ 12 - I/Os currently in progress
+ 13 - time spent doing I/Os (ms)
+ 14 - weighted time spent doing I/Os (ms)
+ For more details refer to Documentation/iostats.txt
diff --git a/Documentation/ABI/testing/pstore b/Documentation/ABI/testing/pstore
new file mode 100644
index 00000000000..ff1df4e3b05
--- /dev/null
+++ b/Documentation/ABI/testing/pstore
@@ -0,0 +1,47 @@
+Where: /dev/pstore/...
+Date: March 2011
+Kernel Version: 2.6.39
+Contact: tony.luck@intel.com
+Description: Generic interface to platform dependent persistent storage.
+
+ Platforms that provide a mechanism to preserve some data
+ across system reboots can register with this driver to
+ provide a generic interface to show records captured in
+ the dying moments. In the case of a panic the last part
+ of the console log is captured, but other interesting
+ data can also be saved.
+
+ # mount -t pstore -o kmsg_bytes=8000 - /dev/pstore
+
+ $ ls -l /dev/pstore
+ total 0
+ -r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-erst-1
+
+ Different users of this interface will result in different
+ filename prefixes. Currently two are defined:
+
+ "dmesg" - saved console log
+ "mce" - architecture dependent data from fatal h/w error
+
+ Once the information in a file has been read, removing
+ the file will signal to the underlying persistent storage
+ device that it can reclaim the space for later re-use.
+
+ $ rm /dev/pstore/dmesg-erst-1
+
+ The expectation is that all files in /dev/pstore
+ will be saved elsewhere and erased from persistent store
+ soon after boot to free up space ready for the next
+ catastrophe.
+
+ The 'kmsg_bytes' mount option changes the target amount of
+ data saved on each oops/panic. Pstore saves (possibly
+ multiple) files based on the record size of the underlying
+ persistent storage until at least this amount is reached.
+ Default is 10 Kbytes.
+
+ Pstore only supports one backend at a time. If multiple
+ backends are available, the preferred backend may be
+ set by passing the pstore.backend= argument to the kernel at
+ boot time.
+
diff --git a/Documentation/ABI/testing/sysfs-ata b/Documentation/ABI/testing/sysfs-ata
new file mode 100644
index 00000000000..0a932155cbb
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-ata
@@ -0,0 +1,99 @@
+What: /sys/class/ata_...
+Date: August 2008
+Contact: Gwendal Grignou<gwendal@google.com>
+Description:
+
+Provide a place in sysfs for storing the ATA topology of the system. This allows
+retrieving various information about ATA objects.
+
+Files under /sys/class/ata_port
+-------------------------------
+
+ For each port, a directory ataX is created where X is the ata_port_id of
+ the port. The device parent is the ata host device.
+
+idle_irq (read)
+
+ Number of IRQ received by the port while idle [some ata HBA only].
+
+nr_pmp_links (read)
+
+ If a SATA Port Multiplier (PM) is connected, number of link behind it.
+
+Files under /sys/class/ata_link
+-------------------------------
+
+ Behind each port, there is a ata_link. If there is a SATA PM in the
+ topology, 15 ata_link objects are created.
+
+ If a link is behind a port, the directory name is linkX, where X is
+ ata_port_id of the port.
+ If a link is behind a PM, its name is linkX.Y where X is ata_port_id
+ of the parent port and Y the PM port.
+
+hw_sata_spd_limit
+
+ Maximum speed supported by the connected SATA device.
+
+sata_spd_limit
+
+ Maximum speed imposed by libata.
+
+sata_spd
+
+ Current speed of the link [1.5, 3Gps,...].
+
+Files under /sys/class/ata_device
+---------------------------------
+
+ Behind each link, up to two ata device are created.
+ The name of the directory is devX[.Y].Z where:
+ - X is ata_port_id of the port where the device is connected,
+ - Y the port of the PM if any, and
+ - Z the device id: for PATA, there is usually 2 devices [0,1],
+ only 1 for SATA.
+
+class
+ Device class. Can be "ata" for disk, "atapi" for packet device,
+ "pmp" for PM, or "none" if no device was found behind the link.
+
+dma_mode
+
+ Transfer modes supported by the device when in DMA mode.
+ Mostly used by PATA device.
+
+pio_mode
+
+ Transfer modes supported by the device when in PIO mode.
+ Mostly used by PATA device.
+
+xfer_mode
+
+ Current transfer mode.
+
+id
+
+ Cached result of IDENTIFY command, as described in ATA8 7.16 and 7.17.
+ Only valid if the device is not a PM.
+
+gscr
+
+ Cached result of the dump of PM GSCR register.
+ Valid registers are:
+ 0: SATA_PMP_GSCR_PROD_ID,
+ 1: SATA_PMP_GSCR_REV,
+ 2: SATA_PMP_GSCR_PORT_INFO,
+ 32: SATA_PMP_GSCR_ERROR,
+ 33: SATA_PMP_GSCR_ERROR_EN,
+ 64: SATA_PMP_GSCR_FEAT,
+ 96: SATA_PMP_GSCR_FEAT_EN,
+ 130: SATA_PMP_GSCR_SII_GPIO
+ Only valid if the device is a PM.
+
+spdn_cnt
+
+ Number of time libata decided to lower the speed of link due to errors.
+
+ering
+
+ Formatted output of the error ring of the device.
diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block
new file mode 100644
index 00000000000..c1eb41cb987
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-block
@@ -0,0 +1,208 @@
+What: /sys/block/<disk>/stat
+Date: February 2008
+Contact: Jerome Marchand <jmarchan@redhat.com>
+Description:
+ The /sys/block/<disk>/stat files displays the I/O
+ statistics of disk <disk>. They contain 11 fields:
+ 1 - reads completed successfully
+ 2 - reads merged
+ 3 - sectors read
+ 4 - time spent reading (ms)
+ 5 - writes completed
+ 6 - writes merged
+ 7 - sectors written
+ 8 - time spent writing (ms)
+ 9 - I/Os currently in progress
+ 10 - time spent doing I/Os (ms)
+ 11 - weighted time spent doing I/Os (ms)
+ For more details refer Documentation/iostats.txt
+
+
+What: /sys/block/<disk>/<part>/stat
+Date: February 2008
+Contact: Jerome Marchand <jmarchan@redhat.com>
+Description:
+ The /sys/block/<disk>/<part>/stat files display the
+ I/O statistics of partition <part>. The format is the
+ same as the above-written /sys/block/<disk>/stat
+ format.
+
+
+What: /sys/block/<disk>/integrity/format
+Date: June 2008
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Metadata format for integrity capable block device.
+ E.g. T10-DIF-TYPE1-CRC.
+
+
+What: /sys/block/<disk>/integrity/read_verify
+Date: June 2008
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Indicates whether the block layer should verify the
+ integrity of read requests serviced by devices that
+ support sending integrity metadata.
+
+
+What: /sys/block/<disk>/integrity/tag_size
+Date: June 2008
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Number of bytes of integrity tag space available per
+ 512 bytes of data.
+
+
+What: /sys/block/<disk>/integrity/write_generate
+Date: June 2008
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Indicates whether the block layer should automatically
+ generate checksums for write requests bound for
+ devices that support receiving integrity metadata.
+
+What: /sys/block/<disk>/alignment_offset
+Date: April 2009
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Storage devices may report a physical block size that is
+ bigger than the logical block size (for instance a drive
+ with 4KB physical sectors exposing 512-byte logical
+ blocks to the operating system). This parameter
+ indicates how many bytes the beginning of the device is
+ offset from the disk's natural alignment.
+
+What: /sys/block/<disk>/<partition>/alignment_offset
+Date: April 2009
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Storage devices may report a physical block size that is
+ bigger than the logical block size (for instance a drive
+ with 4KB physical sectors exposing 512-byte logical
+ blocks to the operating system). This parameter
+ indicates how many bytes the beginning of the partition
+ is offset from the disk's natural alignment.
+
+What: /sys/block/<disk>/queue/logical_block_size
+Date: May 2009
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ This is the smallest unit the storage device can
+ address. It is typically 512 bytes.
+
+What: /sys/block/<disk>/queue/physical_block_size
+Date: May 2009
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ This is the smallest unit a physical storage device can
+ write atomically. It is usually the same as the logical
+ block size but may be bigger. One example is SATA
+ drives with 4KB sectors that expose a 512-byte logical
+ block size to the operating system. For stacked block
+ devices the physical_block_size variable contains the
+ maximum physical_block_size of the component devices.
+
+What: /sys/block/<disk>/queue/minimum_io_size
+Date: April 2009
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Storage devices may report a granularity or preferred
+ minimum I/O size which is the smallest request the
+ device can perform without incurring a performance
+ penalty. For disk drives this is often the physical
+ block size. For RAID arrays it is often the stripe
+ chunk size. A properly aligned multiple of
+ minimum_io_size is the preferred request size for
+ workloads where a high number of I/O operations is
+ desired.
+
+What: /sys/block/<disk>/queue/optimal_io_size
+Date: April 2009
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Storage devices may report an optimal I/O size, which is
+ the device's preferred unit for sustained I/O. This is
+ rarely reported for disk drives. For RAID arrays it is
+ usually the stripe width or the internal track size. A
+ properly aligned multiple of optimal_io_size is the
+ preferred request size for workloads where sustained
+ throughput is desired. If no optimal I/O size is
+ reported this file contains 0.
+
+What: /sys/block/<disk>/queue/nomerges
+Date: January 2010
+Contact:
+Description:
+ Standard I/O elevator operations include attempts to
+ merge contiguous I/Os. For known random I/O loads these
+ attempts will always fail and result in extra cycles
+ being spent in the kernel. This allows one to turn off
+ this behavior on one of two ways: When set to 1, complex
+ merge checks are disabled, but the simple one-shot merges
+ with the previous I/O request are enabled. When set to 2,
+ all merge tries are disabled. The default value is 0 -
+ which enables all types of merge tries.
+
+What: /sys/block/<disk>/discard_alignment
+Date: May 2011
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Devices that support discard functionality may
+ internally allocate space in units that are bigger than
+ the exported logical block size. The discard_alignment
+ parameter indicates how many bytes the beginning of the
+ device is offset from the internal allocation unit's
+ natural alignment.
+
+What: /sys/block/<disk>/<partition>/discard_alignment
+Date: May 2011
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Devices that support discard functionality may
+ internally allocate space in units that are bigger than
+ the exported logical block size. The discard_alignment
+ parameter indicates how many bytes the beginning of the
+ partition is offset from the internal allocation unit's
+ natural alignment.
+
+What: /sys/block/<disk>/queue/discard_granularity
+Date: May 2011
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Devices that support discard functionality may
+ internally allocate space using units that are bigger
+ than the logical block size. The discard_granularity
+ parameter indicates the size of the internal allocation
+ unit in bytes if reported by the device. Otherwise the
+ discard_granularity will be set to match the device's
+ physical block size. A discard_granularity of 0 means
+ that the device does not support discard functionality.
+
+What: /sys/block/<disk>/queue/discard_max_bytes
+Date: May 2011
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Devices that support discard functionality may have
+ internal limits on the number of bytes that can be
+ trimmed or unmapped in a single operation. Some storage
+ protocols also have inherent limits on the number of
+ blocks that can be described in a single command. The
+ discard_max_bytes parameter is set by the device driver
+ to the maximum number of bytes that can be discarded in
+ a single operation. Discard requests issued to the
+ device must not exceed this limit. A discard_max_bytes
+ value of 0 means that the device does not support
+ discard functionality.
+
+What: /sys/block/<disk>/queue/discard_zeroes_data
+Date: May 2011
+Contact: Martin K. Petersen <martin.petersen@oracle.com>
+Description:
+ Devices that support discard functionality may return
+ stale or random data when a previously discarded block
+ is read back. This can cause problems if the filesystem
+ expects discarded blocks to be explicitly cleared. If a
+ device reports that it deterministically returns zeroes
+ when a discarded area is read the discard_zeroes_data
+ parameter will be set to one. Otherwise it will be 0 and
+ the result of reading a discarded area is undefined.
diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram
new file mode 100644
index 00000000000..c8b3b48ec62
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-block-zram
@@ -0,0 +1,99 @@
+What: /sys/block/zram<id>/disksize
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The disksize file is read-write and specifies the disk size
+ which represents the limit on the *uncompressed* worth of data
+ that can be stored in this disk.
+
+What: /sys/block/zram<id>/initstate
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The disksize file is read-only and shows the initialization
+ state of the device.
+
+What: /sys/block/zram<id>/reset
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The disksize file is write-only and allows resetting the
+ device. The reset operation frees all the memory assocaited
+ with this device.
+
+What: /sys/block/zram<id>/num_reads
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The num_reads file is read-only and specifies the number of
+ reads (failed or successful) done on this device.
+
+What: /sys/block/zram<id>/num_writes
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The num_writes file is read-only and specifies the number of
+ writes (failed or successful) done on this device.
+
+What: /sys/block/zram<id>/invalid_io
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The invalid_io file is read-only and specifies the number of
+ non-page-size-aligned I/O requests issued to this device.
+
+What: /sys/block/zram<id>/notify_free
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The notify_free file is read-only and specifies the number of
+ swap slot free notifications received by this device. These
+ notifications are send to a swap block device when a swap slot
+ is freed. This statistic is applicable only when this disk is
+ being used as a swap disk.
+
+What: /sys/block/zram<id>/discard
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The discard file is read-only and specifies the number of
+ discard requests received by this device. These requests
+ provide information to block device regarding blocks which are
+ no longer used by filesystem.
+
+What: /sys/block/zram<id>/zero_pages
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The zero_pages file is read-only and specifies number of zero
+ filled pages written to this disk. No memory is allocated for
+ such pages.
+
+What: /sys/block/zram<id>/orig_data_size
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The orig_data_size file is read-only and specifies uncompressed
+ size of data stored in this disk. This excludes zero-filled
+ pages (zero_pages) since no memory is allocated for them.
+ Unit: bytes
+
+What: /sys/block/zram<id>/compr_data_size
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The compr_data_size file is read-only and specifies compressed
+ size of data stored in this disk. So, compression ratio can be
+ calculated using orig_data_size and this statistic.
+ Unit: bytes
+
+What: /sys/block/zram<id>/mem_used_total
+Date: August 2010
+Contact: Nitin Gupta <ngupta@vflare.org>
+Description:
+ The mem_used_total file is read-only and specifies the amount
+ of memory, including allocator fragmentation and metadata
+ overhead, allocated for this disk. So, allocator space
+ efficiency can be calculated using compr_data_size and this
+ statistic.
+ Unit: bytes \ No newline at end of file
diff --git a/Documentation/ABI/testing/sysfs-bus-bcma b/Documentation/ABI/testing/sysfs-bus-bcma
new file mode 100644
index 00000000000..721b4aea302
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-bcma
@@ -0,0 +1,31 @@
+What: /sys/bus/bcma/devices/.../manuf
+Date: May 2011
+KernelVersion: 3.0
+Contact: Rafał Miłecki <zajec5@gmail.com>
+Description:
+ Each BCMA core has it's manufacturer id. See
+ include/linux/bcma/bcma.h for possible values.
+
+What: /sys/bus/bcma/devices/.../id
+Date: May 2011
+KernelVersion: 3.0
+Contact: Rafał Miłecki <zajec5@gmail.com>
+Description:
+ There are a few types of BCMA cores, they can be identified by
+ id field.
+
+What: /sys/bus/bcma/devices/.../rev
+Date: May 2011
+KernelVersion: 3.0
+Contact: Rafał Miłecki <zajec5@gmail.com>
+Description:
+ BCMA cores of the same type can still slightly differ depending
+ on their revision. Use it for detailed programming.
+
+What: /sys/bus/bcma/devices/.../class
+Date: May 2011
+KernelVersion: 3.0
+Contact: Rafał Miłecki <zajec5@gmail.com>
+Description:
+ Each BCMA core is identified by few fields, including class it
+ belongs to. See include/linux/bcma/bcma.h for possible values.
diff --git a/Documentation/ABI/testing/sysfs-bus-css b/Documentation/ABI/testing/sysfs-bus-css
new file mode 100644
index 00000000000..2979c40c10e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-css
@@ -0,0 +1,35 @@
+What: /sys/bus/css/devices/.../type
+Date: March 2008
+Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
+ linux-s390@vger.kernel.org
+Description: Contains the subchannel type, as reported by the hardware.
+ This attribute is present for all subchannel types.
+
+What: /sys/bus/css/devices/.../modalias
+Date: March 2008
+Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
+ linux-s390@vger.kernel.org
+Description: Contains the module alias as reported with uevents.
+ It is of the format css:t<type> and present for all
+ subchannel types.
+
+What: /sys/bus/css/drivers/io_subchannel/.../chpids
+Date: December 2002
+Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
+ linux-s390@vger.kernel.org
+Description: Contains the ids of the channel paths used by this
+ subchannel, as reported by the channel subsystem
+ during subchannel recognition.
+ Note: This is an I/O-subchannel specific attribute.
+Users: s390-tools, HAL
+
+What: /sys/bus/css/drivers/io_subchannel/.../pimpampom
+Date: December 2002
+Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
+ linux-s390@vger.kernel.org
+Description: Contains the PIM/PAM/POM values, as reported by the
+ channel subsystem when last queried by the common I/O
+ layer (this implies that this attribute is not necessarily
+ in sync with the values current in the channel subsystem).
+ Note: This is an I/O-subchannel specific attribute.
+Users: s390-tools, HAL
diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480
new file mode 100644
index 00000000000..9de269bb0ae
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480
@@ -0,0 +1,21 @@
+What: /sys/bus/i2c/devices/.../device
+Date: February 2011
+Contact: Minkyu Kang <mk7.kang@samsung.com>
+Description:
+ show what device is attached
+ NONE - no device
+ USB - USB device is attached
+ UART - UART is attached
+ CHARGER - Charger is attaced
+ JIG - JIG is attached
+
+What: /sys/bus/i2c/devices/.../switch
+Date: February 2011
+Contact: Minkyu Kang <mk7.kang@samsung.com>
+Description:
+ show or set the state of manual switch
+ VAUDIO - switch to VAUDIO path
+ UART - switch to UART path
+ AUDIO - switch to AUDIO path
+ DHOST - switch to DHOST path
+ AUTO - switch automatically by device
diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-hm6352 b/Documentation/ABI/testing/sysfs-bus-i2c-devices-hm6352
new file mode 100644
index 00000000000..feb2e4a8707
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-hm6352
@@ -0,0 +1,21 @@
+Where: /sys/bus/i2c/devices/.../heading0_input
+Date: April 2010
+Kernel Version: 2.6.36?
+Contact: alan.cox@intel.com
+Description: Reports the current heading from the compass as a floating
+ point value in degrees.
+
+Where: /sys/bus/i2c/devices/.../power_state
+Date: April 2010
+Kernel Version: 2.6.36?
+Contact: alan.cox@intel.com
+Description: Sets the power state of the device. 0 sets the device into
+ sleep mode, 1 wakes it up.
+
+Where: /sys/bus/i2c/devices/.../calibration
+Date: April 2010
+Kernel Version: 2.6.36?
+Contact: alan.cox@intel.com
+Description: Sets the calibration on or off (1 = on, 0 = off). See the
+ chip data sheet.
+
diff --git a/Documentation/ABI/testing/sysfs-bus-media b/Documentation/ABI/testing/sysfs-bus-media
new file mode 100644
index 00000000000..7057e574154
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-media
@@ -0,0 +1,6 @@
+What: /sys/bus/media/devices/.../model
+Date: January 2011
+Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ linux-media@vger.kernel.org
+Description: Contains the device model name in UTF-8. The device version is
+ is not be appended to the model name.
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
new file mode 100644
index 00000000000..34f51100f02
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -0,0 +1,212 @@
+What: /sys/bus/pci/drivers/.../bind
+Date: December 2003
+Contact: linux-pci@vger.kernel.org
+Description:
+ Writing a device location to this file will cause
+ the driver to attempt to bind to the device found at
+ this location. This is useful for overriding default
+ bindings. The format for the location is: DDDD:BB:DD.F.
+ That is Domain:Bus:Device.Function and is the same as
+ found in /sys/bus/pci/devices/. For example:
+ # echo 0000:00:19.0 > /sys/bus/pci/drivers/foo/bind
+ (Note: kernels before 2.6.28 may require echo -n).
+
+What: /sys/bus/pci/drivers/.../unbind
+Date: December 2003
+Contact: linux-pci@vger.kernel.org
+Description:
+ Writing a device location to this file will cause the
+ driver to attempt to unbind from the device found at
+ this location. This may be useful when overriding default
+ bindings. The format for the location is: DDDD:BB:DD.F.
+ That is Domain:Bus:Device.Function and is the same as
+ found in /sys/bus/pci/devices/. For example:
+ # echo 0000:00:19.0 > /sys/bus/pci/drivers/foo/unbind
+ (Note: kernels before 2.6.28 may require echo -n).
+
+What: /sys/bus/pci/drivers/.../new_id
+Date: December 2003
+Contact: linux-pci@vger.kernel.org
+Description:
+ Writing a device ID to this file will attempt to
+ dynamically add a new device ID to a PCI device driver.
+ This may allow the driver to support more hardware than
+ was included in the driver's static device ID support
+ table at compile time. The format for the device ID is:
+ VVVV DDDD SVVV SDDD CCCC MMMM PPPP. That is Vendor ID,
+ Device ID, Subsystem Vendor ID, Subsystem Device ID,
+ Class, Class Mask, and Private Driver Data. The Vendor ID
+ and Device ID fields are required, the rest are optional.
+ Upon successfully adding an ID, the driver will probe
+ for the device and attempt to bind to it. For example:
+ # echo "8086 10f5" > /sys/bus/pci/drivers/foo/new_id
+
+What: /sys/bus/pci/drivers/.../remove_id
+Date: February 2009
+Contact: Chris Wright <chrisw@sous-sol.org>
+Description:
+ Writing a device ID to this file will remove an ID
+ that was dynamically added via the new_id sysfs entry.
+ The format for the device ID is:
+ VVVV DDDD SVVV SDDD CCCC MMMM. That is Vendor ID, Device
+ ID, Subsystem Vendor ID, Subsystem Device ID, Class,
+ and Class Mask. The Vendor ID and Device ID fields are
+ required, the rest are optional. After successfully
+ removing an ID, the driver will no longer support the
+ device. This is useful to ensure auto probing won't
+ match the driver to the device. For example:
+ # echo "8086 10f5" > /sys/bus/pci/drivers/foo/remove_id
+
+What: /sys/bus/pci/rescan
+Date: January 2009
+Contact: Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+ Writing a non-zero value to this attribute will
+ force a rescan of all PCI buses in the system, and
+ re-discover previously removed devices.
+ Depends on CONFIG_HOTPLUG.
+
+What: /sys/bus/pci/devices/.../msi_irqs/
+Date: September, 2011
+Contact: Neil Horman <nhorman@tuxdriver.com>
+Description:
+ The /sys/devices/.../msi_irqs directory contains a variable set
+ of sub-directories, with each sub-directory being named after a
+ corresponding msi irq vector allocated to that device. Each
+ numbered sub-directory N contains attributes of that irq.
+ Note that this directory is not created for device drivers which
+ do not support msi irqs
+
+What: /sys/bus/pci/devices/.../msi_irqs/<N>/mode
+Date: September 2011
+Contact: Neil Horman <nhorman@tuxdriver.com>
+Description:
+ This attribute indicates the mode that the irq vector named by
+ the parent directory is in (msi vs. msix)
+
+What: /sys/bus/pci/devices/.../remove
+Date: January 2009
+Contact: Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+ Writing a non-zero value to this attribute will
+ hot-remove the PCI device and any of its children.
+ Depends on CONFIG_HOTPLUG.
+
+What: /sys/bus/pci/devices/.../pci_bus/.../rescan
+Date: May 2011
+Contact: Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+ Writing a non-zero value to this attribute will
+ force a rescan of the bus and all child buses,
+ and re-discover devices removed earlier from this
+ part of the device tree. Depends on CONFIG_HOTPLUG.
+
+What: /sys/bus/pci/devices/.../rescan
+Date: January 2009
+Contact: Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+ Writing a non-zero value to this attribute will
+ force a rescan of the device's parent bus and all
+ child buses, and re-discover devices removed earlier
+ from this part of the device tree.
+ Depends on CONFIG_HOTPLUG.
+
+What: /sys/bus/pci/devices/.../reset
+Date: July 2009
+Contact: Michael S. Tsirkin <mst@redhat.com>
+Description:
+ Some devices allow an individual function to be reset
+ without affecting other functions in the same device.
+ For devices that have this support, a file named reset
+ will be present in sysfs. Writing 1 to this file
+ will perform reset.
+
+What: /sys/bus/pci/devices/.../vpd
+Date: February 2008
+Contact: Ben Hutchings <bhutchings@solarflare.com>
+Description:
+ A file named vpd in a device directory will be a
+ binary file containing the Vital Product Data for the
+ device. It should follow the VPD format defined in
+ PCI Specification 2.1 or 2.2, but users should consider
+ that some devices may have malformatted data. If the
+ underlying VPD has a writable section then the
+ corresponding section of this file will be writable.
+
+What: /sys/bus/pci/devices/.../virtfnN
+Date: March 2009
+Contact: Yu Zhao <yu.zhao@intel.com>
+Description:
+ This symbolic link appears when hardware supports the SR-IOV
+ capability and the Physical Function driver has enabled it.
+ The symbolic link points to the PCI device sysfs entry of the
+ Virtual Function whose index is N (0...MaxVFs-1).
+
+What: /sys/bus/pci/devices/.../dep_link
+Date: March 2009
+Contact: Yu Zhao <yu.zhao@intel.com>
+Description:
+ This symbolic link appears when hardware supports the SR-IOV
+ capability and the Physical Function driver has enabled it,
+ and this device has vendor specific dependencies with others.
+ The symbolic link points to the PCI device sysfs entry of
+ Physical Function this device depends on.
+
+What: /sys/bus/pci/devices/.../physfn
+Date: March 2009
+Contact: Yu Zhao <yu.zhao@intel.com>
+Description:
+ This symbolic link appears when a device is a Virtual Function.
+ The symbolic link points to the PCI device sysfs entry of the
+ Physical Function this device associates with.
+
+What: /sys/bus/pci/slots/.../module
+Date: June 2009
+Contact: linux-pci@vger.kernel.org
+Description:
+ This symbolic link points to the PCI hotplug controller driver
+ module that manages the hotplug slot.
+
+What: /sys/bus/pci/devices/.../label
+Date: July 2010
+Contact: Narendra K <narendra_k@dell.com>, linux-bugs@dell.com
+Description:
+ Reading this attribute will provide the firmware
+ given name (SMBIOS type 41 string or ACPI _DSM string) of
+ the PCI device. The attribute will be created only
+ if the firmware has given a name to the PCI device.
+ ACPI _DSM string name will be given priority if the
+ system firmware provides SMBIOS type 41 string also.
+Users:
+ Userspace applications interested in knowing the
+ firmware assigned name of the PCI device.
+
+What: /sys/bus/pci/devices/.../index
+Date: July 2010
+Contact: Narendra K <narendra_k@dell.com>, linux-bugs@dell.com
+Description:
+ Reading this attribute will provide the firmware
+ given instance (SMBIOS type 41 device type instance) of the
+ PCI device. The attribute will be created only if the firmware
+ has given an instance number to the PCI device.
+Users:
+ Userspace applications interested in knowing the
+ firmware assigned device type instance of the PCI
+ device that can help in understanding the firmware
+ intended order of the PCI device.
+
+What: /sys/bus/pci/devices/.../acpi_index
+Date: July 2010
+Contact: Narendra K <narendra_k@dell.com>, linux-bugs@dell.com
+Description:
+ Reading this attribute will provide the firmware
+ given instance (ACPI _DSM instance number) of the PCI device.
+ The attribute will be created only if the firmware has given
+ an instance number to the PCI device. ACPI _DSM instance number
+ will be given priority if the system firmware provides SMBIOS
+ type 41 device type instance also.
+Users:
+ Userspace applications interested in knowing the
+ firmware assigned instance number of the PCI
+ device that can help in understanding the firmware
+ intended order of the PCI device.
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss
new file mode 100644
index 00000000000..53d99edd1d7
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss
@@ -0,0 +1,80 @@
+Where: /sys/bus/pci/devices/<dev>/ccissX/cXdY/model
+Date: March 2009
+Kernel Version: 2.6.30
+Contact: iss_storagedev@hp.com
+Description: Displays the SCSI INQUIRY page 0 model for logical drive
+ Y of controller X.
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/cXdY/rev
+Date: March 2009
+Kernel Version: 2.6.30
+Contact: iss_storagedev@hp.com
+Description: Displays the SCSI INQUIRY page 0 revision for logical
+ drive Y of controller X.
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/cXdY/unique_id
+Date: March 2009
+Kernel Version: 2.6.30
+Contact: iss_storagedev@hp.com
+Description: Displays the SCSI INQUIRY page 83 serial number for logical
+ drive Y of controller X.
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/cXdY/vendor
+Date: March 2009
+Kernel Version: 2.6.30
+Contact: iss_storagedev@hp.com
+Description: Displays the SCSI INQUIRY page 0 vendor for logical drive
+ Y of controller X.
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/cXdY/block:cciss!cXdY
+Date: March 2009
+Kernel Version: 2.6.30
+Contact: iss_storagedev@hp.com
+Description: A symbolic link to /sys/block/cciss!cXdY
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/rescan
+Date: August 2009
+Kernel Version: 2.6.31
+Contact: iss_storagedev@hp.com
+Description: Kicks of a rescan of the controller to discover logical
+ drive topology changes.
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/cXdY/lunid
+Date: August 2009
+Kernel Version: 2.6.31
+Contact: iss_storagedev@hp.com
+Description: Displays the 8-byte LUN ID used to address logical
+ drive Y of controller X.
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/cXdY/raid_level
+Date: August 2009
+Kernel Version: 2.6.31
+Contact: iss_storagedev@hp.com
+Description: Displays the RAID level of logical drive Y of
+ controller X.
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/cXdY/usage_count
+Date: August 2009
+Kernel Version: 2.6.31
+Contact: iss_storagedev@hp.com
+Description: Displays the usage count (number of opens) of logical drive Y
+ of controller X.
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/resettable
+Date: February 2011
+Kernel Version: 2.6.38
+Contact: iss_storagedev@hp.com
+Description: Value of 1 indicates the controller can honor the reset_devices
+ kernel parameter. Value of 0 indicates reset_devices cannot be
+ honored. This is to allow, for example, kexec tools to be able
+ to warn the user if they designate an unresettable device as
+ a dump device, as kdump requires resetting the device in order
+ to work reliably.
+
+Where: /sys/bus/pci/devices/<dev>/ccissX/transport_mode
+Date: July 2011
+Kernel Version: 3.0
+Contact: iss_storagedev@hp.com
+Description: Value of "simple" indicates that the controller has been placed
+ in "simple mode". Value of "performant" indicates that the
+ controller has been placed in "performant mode".
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd b/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd
new file mode 100644
index 00000000000..60c60fa624b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd
@@ -0,0 +1,46 @@
+What: /sys/bus/pci/drivers/ehci_hcd/.../companion
+ /sys/bus/usb/devices/usbN/../companion
+Date: January 2007
+KernelVersion: 2.6.21
+Contact: Alan Stern <stern@rowland.harvard.edu>
+Description:
+ PCI-based EHCI USB controllers (i.e., high-speed USB-2.0
+ controllers) are often implemented along with a set of
+ "companion" full/low-speed USB-1.1 controllers. When a
+ high-speed device is plugged in, the connection is routed
+ to the EHCI controller; when a full- or low-speed device
+ is plugged in, the connection is routed to the companion
+ controller.
+
+ Sometimes you want to force a high-speed device to connect
+ at full speed, which can be accomplished by forcing the
+ connection to be routed to the companion controller.
+ That's what this file does. Writing a port number to the
+ file causes connections on that port to be routed to the
+ companion controller, and writing the negative of a port
+ number returns the port to normal operation.
+
+ For example: To force the high-speed device attached to
+ port 4 on bus 2 to run at full speed:
+
+ echo 4 >/sys/bus/usb/devices/usb2/../companion
+
+ To return the port to high-speed operation:
+
+ echo -4 >/sys/bus/usb/devices/usb2/../companion
+
+ Reading the file gives the list of ports currently forced
+ to the companion controller.
+
+ Note: Some EHCI controllers do not have companions; they
+ may contain an internal "transaction translator" or they
+ may be attached directly to a "rate-matching hub". This
+ mechanism will not work with such controllers. Also, it
+ cannot be used to force a port on a high-speed hub to
+ connect at full speed.
+
+ Note: When this file was first added, it appeared in a
+ different sysfs directory. The location given above is
+ correct for 2.6.35 (and probably several earlier kernel
+ versions as well).
+
diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd
new file mode 100644
index 00000000000..dbedafb095e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-rbd
@@ -0,0 +1,76 @@
+What: /sys/bus/rbd/
+Date: November 2010
+Contact: Yehuda Sadeh <yehuda@newdream.net>,
+ Sage Weil <sage@newdream.net>
+Description:
+
+Being used for adding and removing rbd block devices.
+
+Usage: <mon ip addr> <options> <pool name> <rbd image name> [snap name]
+
+ $ echo "192.168.0.1 name=admin rbd foo" > /sys/bus/rbd/add
+
+The snapshot name can be "-" or omitted to map the image read/write. A <dev-id>
+will be assigned for any registered block device. If snapshot is used, it will
+be mapped read-only.
+
+Removal of a device:
+
+ $ echo <dev-id> > /sys/bus/rbd/remove
+
+Entries under /sys/bus/rbd/devices/<dev-id>/
+--------------------------------------------
+
+client_id
+
+ The ceph unique client id that was assigned for this specific session.
+
+major
+
+ The block device major number.
+
+name
+
+ The name of the rbd image.
+
+pool
+
+ The pool where this rbd image resides. The pool-name pair is unique
+ per rados system.
+
+size
+
+ The size (in bytes) of the mapped block device.
+
+refresh
+
+ Writing to this file will reread the image header data and set
+ all relevant datastructures accordingly.
+
+current_snap
+
+ The current snapshot for which the device is mapped.
+
+create_snap
+
+ Create a snapshot:
+
+ $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_create
+
+snap_*
+
+ A directory per each snapshot
+
+
+Entries under /sys/bus/rbd/devices/<dev-id>/snap_<snap-name>
+-------------------------------------------------------------
+
+id
+
+ The rados internal snapshot id assigned for this snapshot
+
+size
+
+ The size of the image when this snapshot was taken.
+
+
diff --git a/Documentation/ABI/testing/sysfs-bus-umc b/Documentation/ABI/testing/sysfs-bus-umc
new file mode 100644
index 00000000000..948fec41244
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-umc
@@ -0,0 +1,28 @@
+What: /sys/bus/umc/
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The Wireless Host Controller Interface (WHCI)
+ specification describes a PCI-based device with
+ multiple capabilities; the UWB Multi-interface
+ Controller (UMC).
+
+ The umc bus presents each of the individual
+ capabilties as a device.
+
+What: /sys/bus/umc/devices/.../capability_id
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The ID of this capability, with 0 being the radio
+ controller capability.
+
+What: /sys/bus/umc/devices/.../version
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The specification version this capability's hardware
+ interface complies with.
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb
new file mode 100644
index 00000000000..b4f548792e3
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -0,0 +1,184 @@
+What: /sys/bus/usb/devices/.../power/autosuspend
+Date: March 2007
+KernelVersion: 2.6.21
+Contact: Alan Stern <stern@rowland.harvard.edu>
+Description:
+ Each USB device directory will contain a file named
+ power/autosuspend. This file holds the time (in seconds)
+ the device must be idle before it will be autosuspended.
+ 0 means the device will be autosuspended as soon as
+ possible. Negative values will prevent the device from
+ being autosuspended at all, and writing a negative value
+ will resume the device if it is already suspended.
+
+ The autosuspend delay for newly-created devices is set to
+ the value of the usbcore.autosuspend module parameter.
+
+What: /sys/bus/usb/devices/.../power/persist
+Date: May 2007
+KernelVersion: 2.6.23
+Contact: Alan Stern <stern@rowland.harvard.edu>
+Description:
+ If CONFIG_USB_PERSIST is set, then each USB device directory
+ will contain a file named power/persist. The file holds a
+ boolean value (0 or 1) indicating whether or not the
+ "USB-Persist" facility is enabled for the device. Since the
+ facility is inherently dangerous, it is disabled by default
+ for all devices except hubs. For more information, see
+ Documentation/usb/persist.txt.
+
+What: /sys/bus/usb/device/.../power/connected_duration
+Date: January 2008
+KernelVersion: 2.6.25
+Contact: Sarah Sharp <sarah.a.sharp@intel.com>
+Description:
+ If CONFIG_PM and CONFIG_USB_SUSPEND are enabled, then this file
+ is present. When read, it returns the total time (in msec)
+ that the USB device has been connected to the machine. This
+ file is read-only.
+Users:
+ PowerTOP <power@bughost.org>
+ http://www.lesswatts.org/projects/powertop/
+
+What: /sys/bus/usb/device/.../power/active_duration
+Date: January 2008
+KernelVersion: 2.6.25
+Contact: Sarah Sharp <sarah.a.sharp@intel.com>
+Description:
+ If CONFIG_PM and CONFIG_USB_SUSPEND are enabled, then this file
+ is present. When read, it returns the total time (in msec)
+ that the USB device has been active, i.e. not in a suspended
+ state. This file is read-only.
+
+ Tools can use this file and the connected_duration file to
+ compute the percentage of time that a device has been active.
+ For example,
+ echo $((100 * `cat active_duration` / `cat connected_duration`))
+ will give an integer percentage. Note that this does not
+ account for counter wrap.
+Users:
+ PowerTOP <power@bughost.org>
+ http://www.lesswatts.org/projects/powertop/
+
+What: /sys/bus/usb/device/<busnum>-<devnum>...:<config num>-<interface num>/supports_autosuspend
+Date: January 2008
+KernelVersion: 2.6.27
+Contact: Sarah Sharp <sarah.a.sharp@intel.com>
+Description:
+ When read, this file returns 1 if the interface driver
+ for this interface supports autosuspend. It also
+ returns 1 if no driver has claimed this interface, as an
+ unclaimed interface will not stop the device from being
+ autosuspended if all other interface drivers are idle.
+ The file returns 0 if autosuspend support has not been
+ added to the driver.
+Users:
+ USB PM tool
+ git://git.moblin.org/users/sarah/usb-pm-tool/
+
+What: /sys/bus/usb/device/.../authorized
+Date: July 2008
+KernelVersion: 2.6.26
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Authorized devices are available for use by device
+ drivers, non-authorized one are not. By default, wired
+ USB devices are authorized.
+
+ Certified Wireless USB devices are not authorized
+ initially and should be (by writing 1) after the
+ device has been authenticated.
+
+What: /sys/bus/usb/device/.../wusb_cdid
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ For Certified Wireless USB devices only.
+
+ A devices's CDID, as 16 space-separated hex octets.
+
+What: /sys/bus/usb/device/.../wusb_ck
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ For Certified Wireless USB devices only.
+
+ Write the device's connection key (CK) to start the
+ authentication of the device. The CK is 16
+ space-separated hex octets.
+
+What: /sys/bus/usb/device/.../wusb_disconnect
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ For Certified Wireless USB devices only.
+
+ Write a 1 to force the device to disconnect
+ (equivalent to unplugging a wired USB device).
+
+What: /sys/bus/usb/drivers/.../new_id
+Date: October 2011
+Contact: linux-usb@vger.kernel.org
+Description:
+ Writing a device ID to this file will attempt to
+ dynamically add a new device ID to a USB device driver.
+ This may allow the driver to support more hardware than
+ was included in the driver's static device ID support
+ table at compile time. The format for the device ID is:
+ idVendor idProduct bInterfaceClass.
+ The vendor ID and device ID fields are required, the
+ interface class is optional.
+ Upon successfully adding an ID, the driver will probe
+ for the device and attempt to bind to it. For example:
+ # echo "8086 10f5" > /sys/bus/usb/drivers/foo/new_id
+
+What: /sys/bus/usb-serial/drivers/.../new_id
+Date: October 2011
+Contact: linux-usb@vger.kernel.org
+Description:
+ For serial USB drivers, this attribute appears under the
+ extra bus folder "usb-serial" in sysfs; apart from that
+ difference, all descriptions from the entry
+ "/sys/bus/usb/drivers/.../new_id" apply.
+
+What: /sys/bus/usb/drivers/.../remove_id
+Date: November 2009
+Contact: CHENG Renquan <rqcheng@smu.edu.sg>
+Description:
+ Writing a device ID to this file will remove an ID
+ that was dynamically added via the new_id sysfs entry.
+ The format for the device ID is:
+ idVendor idProduct. After successfully
+ removing an ID, the driver will no longer support the
+ device. This is useful to ensure auto probing won't
+ match the driver to the device. For example:
+ # echo "046d c315" > /sys/bus/usb/drivers/foo/remove_id
+
+What: /sys/bus/usb/device/.../avoid_reset_quirk
+Date: December 2009
+Contact: Oliver Neukum <oliver@neukum.org>
+Description:
+ Writing 1 to this file tells the kernel that this
+ device will morph into another mode when it is reset.
+ Drivers will not use reset for error handling for
+ such devices.
+Users:
+ usb_modeswitch
+
+What: /sys/bus/usb/devices/.../power/usb2_hardware_lpm
+Date: September 2011
+Contact: Andiry Xu <andiry.xu@amd.com>
+Description:
+ If CONFIG_USB_SUSPEND is set and a USB 2.0 lpm-capable device
+ is plugged in to a xHCI host which support link PM, it will
+ perform a LPM test; if the test is passed and host supports
+ USB2 hardware LPM (xHCI 1.0 feature), USB2 hardware LPM will
+ be enabled for the device and the USB device directory will
+ contain a file named power/usb2_hardware_lpm. The file holds
+ a string value (enable or disable) indicating whether or not
+ USB2 hardware LPM is enabled for the device. Developer can
+ write y/Y/1 or n/N/0 to the file to enable/disable the
+ feature.
diff --git a/Documentation/ABI/testing/sysfs-bus-usb-devices-usbsevseg b/Documentation/ABI/testing/sysfs-bus-usb-devices-usbsevseg
new file mode 100644
index 00000000000..cb830df8777
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-usb-devices-usbsevseg
@@ -0,0 +1,43 @@
+Where: /sys/bus/usb/.../powered
+Date: August 2008
+Kernel Version: 2.6.26
+Contact: Harrison Metzger <harrisonmetz@gmail.com>
+Description: Controls whether the device's display will powered.
+ A value of 0 is off and a non-zero value is on.
+
+Where: /sys/bus/usb/.../mode_msb
+Where: /sys/bus/usb/.../mode_lsb
+Date: August 2008
+Kernel Version: 2.6.26
+Contact: Harrison Metzger <harrisonmetz@gmail.com>
+Description: Controls the devices display mode.
+ For a 6 character display the values are
+ MSB 0x06; LSB 0x3F, and
+ for an 8 character display the values are
+ MSB 0x08; LSB 0xFF.
+
+Where: /sys/bus/usb/.../textmode
+Date: August 2008
+Kernel Version: 2.6.26
+Contact: Harrison Metzger <harrisonmetz@gmail.com>
+Description: Controls the way the device interprets its text buffer.
+ raw: each character controls its segment manually
+ hex: each character is between 0-15
+ ascii: each character is between '0'-'9' and 'A'-'F'.
+
+Where: /sys/bus/usb/.../text
+Date: August 2008
+Kernel Version: 2.6.26
+Contact: Harrison Metzger <harrisonmetz@gmail.com>
+Description: The text (or data) for the device to display
+
+Where: /sys/bus/usb/.../decimals
+Date: August 2008
+Kernel Version: 2.6.26
+Contact: Harrison Metzger <harrisonmetz@gmail.com>
+Description: Controls the decimal places on the device.
+ To set the nth decimal place, give this field
+ the value of 10 ** n. Assume this field has
+ the value k and has 1 or more decimal places set,
+ to set the mth place (where m is not already set),
+ change this fields value to k + 10 ** m. \ No newline at end of file
diff --git a/Documentation/ABI/testing/sysfs-c2port b/Documentation/ABI/testing/sysfs-c2port
new file mode 100644
index 00000000000..716cffc457e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-c2port
@@ -0,0 +1,88 @@
+What: /sys/class/c2port/
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/ directory will contain files and
+ directories that will provide a unified interface to
+ the C2 port interface.
+
+What: /sys/class/c2port/c2portX
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/ directory is related to X-th
+ C2 port into the system. Each directory will contain files to
+ manage and control its C2 port.
+
+What: /sys/class/c2port/c2portX/access
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/access file enable the access
+ to the C2 port from the system. No commands can be sent
+ till this entry is set to 0.
+
+What: /sys/class/c2port/c2portX/dev_id
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/dev_id file show the device ID
+ of the connected micro.
+
+What: /sys/class/c2port/c2portX/flash_access
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/flash_access file enable the
+ access to the on-board flash of the connected micro.
+ No commands can be sent till this entry is set to 0.
+
+What: /sys/class/c2port/c2portX/flash_block_size
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/flash_block_size file show
+ the on-board flash block size of the connected micro.
+
+What: /sys/class/c2port/c2portX/flash_blocks_num
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/flash_blocks_num file show
+ the on-board flash blocks number of the connected micro.
+
+What: /sys/class/c2port/c2portX/flash_data
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/flash_data file export
+ the content of the on-board flash of the connected micro.
+
+What: /sys/class/c2port/c2portX/flash_erase
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/flash_erase file execute
+ the "erase" command on the on-board flash of the connected
+ micro.
+
+What: /sys/class/c2port/c2portX/flash_erase
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/flash_erase file show the
+ on-board flash size of the connected micro.
+
+What: /sys/class/c2port/c2portX/reset
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/reset file execute a "reset"
+ command on the connected micro.
+
+What: /sys/class/c2port/c2portX/rev_id
+Date: October 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/c2port/c2portX/rev_id file show the revision ID
+ of the connected micro.
diff --git a/Documentation/ABI/testing/sysfs-class b/Documentation/ABI/testing/sysfs-class
new file mode 100644
index 00000000000..4b0cb891e46
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class
@@ -0,0 +1,16 @@
+What: /sys/class/
+Date: Febuary 2006
+Contact: Greg Kroah-Hartman <gregkh@suse.de>
+Description:
+ The /sys/class directory will consist of a group of
+ subdirectories describing individual classes of devices
+ in the kernel. The individual directories will consist
+ of either subdirectories, or symlinks to other
+ directories.
+
+ All programs that use this directory tree must be able
+ to handle both subdirectories or symlinks in order to
+ work properly.
+
+Users:
+ udev <linux-hotplug-devel@lists.sourceforge.net>
diff --git a/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870 b/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870
new file mode 100644
index 00000000000..4a9c545bda4
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870
@@ -0,0 +1,56 @@
+What: /sys/class/backlight/<backlight>/<ambient light zone>_max
+What: /sys/class/backlight/<backlight>/l1_daylight_max
+What: /sys/class/backlight/<backlight>/l2_bright_max
+What: /sys/class/backlight/<backlight>/l3_office_max
+What: /sys/class/backlight/<backlight>/l4_indoor_max
+What: /sys/class/backlight/<backlight>/l5_dark_max
+Date: May 2011
+KernelVersion: 3.0
+Contact: device-drivers-devel@blackfin.uclinux.org
+Description:
+ Control the maximum brightness for <ambient light zone>
+ on this <backlight>. Values are between 0 and 127. This file
+ will also show the brightness level stored for this
+ <ambient light zone>.
+
+What: /sys/class/backlight/<backlight>/<ambient light zone>_dim
+What: /sys/class/backlight/<backlight>/l2_bright_dim
+What: /sys/class/backlight/<backlight>/l3_office_dim
+What: /sys/class/backlight/<backlight>/l4_indoor_dim
+What: /sys/class/backlight/<backlight>/l5_dark_dim
+Date: May 2011
+KernelVersion: 3.0
+Contact: device-drivers-devel@blackfin.uclinux.org
+Description:
+ Control the dim brightness for <ambient light zone>
+ on this <backlight>. Values are between 0 and 127, typically
+ set to 0. Full off when the backlight is disabled.
+ This file will also show the dim brightness level stored for
+ this <ambient light zone>.
+
+What: /sys/class/backlight/<backlight>/ambient_light_level
+Date: May 2011
+KernelVersion: 3.0
+Contact: device-drivers-devel@blackfin.uclinux.org
+Description:
+ Get conversion value of the light sensor.
+ This value is updated every 80 ms (when the light sensor
+ is enabled). Returns integer between 0 (dark) and
+ 8000 (max ambient brightness)
+
+What: /sys/class/backlight/<backlight>/ambient_light_zone
+Date: May 2011
+KernelVersion: 3.0
+Contact: device-drivers-devel@blackfin.uclinux.org
+Description:
+ Get/Set current ambient light zone. Reading returns
+ integer between 1..5 (1 = daylight, 2 = bright, ..., 5 = dark).
+ Writing a value between 1..5 forces the backlight controller
+ to enter the corresponding ambient light zone.
+ Writing 0 returns to normal/automatic ambient light level
+ operation. The ambient light sensing feature on these devices
+ is an extension to the API documented in
+ Documentation/ABI/stable/sysfs-class-backlight.
+ It can be enabled by writing the value stored in
+ /sys/class/backlight/<backlight>/max_brightness to
+ /sys/class/backlight/<backlight>/brightness. \ No newline at end of file
diff --git a/Documentation/ABI/testing/sysfs-class-bdi b/Documentation/ABI/testing/sysfs-class-bdi
new file mode 100644
index 00000000000..5f500977b42
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-bdi
@@ -0,0 +1,50 @@
+What: /sys/class/bdi/<bdi>/
+Date: January 2008
+Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
+Description:
+
+Provide a place in sysfs for the backing_dev_info object. This allows
+setting and retrieving various BDI specific variables.
+
+The <bdi> identifier can be either of the following:
+
+MAJOR:MINOR
+
+ Device number for block devices, or value of st_dev on
+ non-block filesystems which provide their own BDI, such as NFS
+ and FUSE.
+
+MAJOR:MINOR-fuseblk
+
+ Value of st_dev on fuseblk filesystems.
+
+default
+
+ The default backing dev, used for non-block device backed
+ filesystems which do not provide their own BDI.
+
+Files under /sys/class/bdi/<bdi>/
+---------------------------------
+
+read_ahead_kb (read-write)
+
+ Size of the read-ahead window in kilobytes
+
+min_ratio (read-write)
+
+ Under normal circumstances each device is given a part of the
+ total write-back cache that relates to its current average
+ writeout speed in relation to the other devices.
+
+ The 'min_ratio' parameter allows assigning a minimum
+ percentage of the write-back cache to a particular device.
+ For example, this is useful for providing a minimum QoS.
+
+max_ratio (read-write)
+
+ Allows limiting a particular device to use not more than the
+ given percentage of the write-back cache. This is useful in
+ situations where we want to avoid one device taking all or
+ most of the write-back cache. For example in case of an NFS
+ mount that is prone to get stuck, or a FUSE mount which cannot
+ be trusted to play fair.
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq
new file mode 100644
index 00000000000..23d78b5aab1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-devfreq
@@ -0,0 +1,52 @@
+What: /sys/class/devfreq/.../
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ Provide a place in sysfs for the devfreq objects.
+ This allows accessing various devfreq specific variables.
+ The name of devfreq object denoted as ... is same as the
+ name of device using devfreq.
+
+What: /sys/class/devfreq/.../governor
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../governor shows the name of the
+ governor used by the corresponding devfreq object.
+
+What: /sys/class/devfreq/.../cur_freq
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../cur_freq shows the current
+ frequency of the corresponding devfreq object.
+
+What: /sys/class/devfreq/.../central_polling
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../central_polling shows whether
+ the devfreq ojbect is using devfreq-provided central
+ polling mechanism or not.
+
+What: /sys/class/devfreq/.../polling_interval
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../polling_interval shows and sets
+ the requested polling interval of the corresponding devfreq
+ object. The values are represented in ms. If the value is
+ less than 1 jiffy, it is considered to be 0, which means
+ no polling. This value is meaningless if the governor is
+ not polling; thus. If the governor is not using
+ devfreq-provided central polling
+ (/sys/class/devfreq/.../central_polling is 0), this value
+ may be useless.
+
+What: /sys/class/devfreq/.../userspace/set_freq
+Date: September 2011
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../userspace/set_freq shows and
+ sets the requested frequency for the devfreq object if
+ userspace governor is in effect.
diff --git a/Documentation/ABI/testing/sysfs-class-lcd b/Documentation/ABI/testing/sysfs-class-lcd
new file mode 100644
index 00000000000..35906bf7aa7
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-lcd
@@ -0,0 +1,23 @@
+What: /sys/class/lcd/<lcd>/lcd_power
+Date: April 2005
+KernelVersion: 2.6.12
+Contact: Richard Purdie <rpurdie@rpsys.net>
+Description:
+ Control LCD power, values are FB_BLANK_* from fb.h
+ - FB_BLANK_UNBLANK (0) : power on.
+ - FB_BLANK_POWERDOWN (4) : power off
+
+What: /sys/class/lcd/<lcd>/contrast
+Date: April 2005
+KernelVersion: 2.6.12
+Contact: Richard Purdie <rpurdie@rpsys.net>
+Description:
+ Current contrast of this LCD device. Value is between 0 and
+ /sys/class/lcd/<lcd>/max_contrast.
+
+What: /sys/class/lcd/<lcd>/max_contrast
+Date: April 2005
+KernelVersion: 2.6.12
+Contact: Richard Purdie <rpurdie@rpsys.net>
+Description:
+ Maximum contrast for this LCD device.
diff --git a/Documentation/ABI/testing/sysfs-class-led b/Documentation/ABI/testing/sysfs-class-led
new file mode 100644
index 00000000000..3646ec85d51
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-led
@@ -0,0 +1,37 @@
+What: /sys/class/leds/<led>/brightness
+Date: March 2006
+KernelVersion: 2.6.17
+Contact: Richard Purdie <rpurdie@rpsys.net>
+Description:
+ Set the brightness of the LED. Most LEDs don't
+ have hardware brightness support so will just be turned on for
+ non-zero brightness settings. The value is between 0 and
+ /sys/class/leds/<led>/max_brightness.
+
+What: /sys/class/leds/<led>/max_brightness
+Date: March 2006
+KernelVersion: 2.6.17
+Contact: Richard Purdie <rpurdie@rpsys.net>
+Description:
+ Maximum brightness level for this led, default is 255 (LED_FULL).
+
+What: /sys/class/leds/<led>/trigger
+Date: March 2006
+KernelVersion: 2.6.17
+Contact: Richard Purdie <rpurdie@rpsys.net>
+Description:
+ Set the trigger for this LED. A trigger is a kernel based source
+ of led events.
+ You can change triggers in a similar manner to the way an IO
+ scheduler is chosen. Trigger specific parameters can appear in
+ /sys/class/leds/<led> once a given trigger is selected.
+
+What: /sys/class/leds/<led>/inverted
+Date: January 2011
+KernelVersion: 2.6.38
+Contact: Richard Purdie <rpurdie@rpsys.net>
+Description:
+ Invert the LED on/off state. This parameter is specific to
+ gpio and backlight triggers. In case of the backlight trigger,
+ it is useful when driving a LED which is intended to indicate
+ a device in a standby like state.
diff --git a/Documentation/ABI/testing/sysfs-class-mtd b/Documentation/ABI/testing/sysfs-class-mtd
new file mode 100644
index 00000000000..4d55a188898
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-mtd
@@ -0,0 +1,125 @@
+What: /sys/class/mtd/
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ The mtd/ class subdirectory belongs to the MTD subsystem
+ (MTD core).
+
+What: /sys/class/mtd/mtdX/
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ The /sys/class/mtd/mtd{0,1,2,3,...} directories correspond
+ to each /dev/mtdX character device. These may represent
+ physical/simulated flash devices, partitions on a flash
+ device, or concatenated flash devices. They exist regardless
+ of whether CONFIG_MTD_CHAR is actually enabled.
+
+What: /sys/class/mtd/mtdXro/
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ These directories provide the corresponding read-only device
+ nodes for /sys/class/mtd/mtdX/ . They are only created
+ (for the benefit of udev) if CONFIG_MTD_CHAR is enabled.
+
+What: /sys/class/mtd/mtdX/dev
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ Major and minor numbers of the character device corresponding
+ to this MTD device (in <major>:<minor> format). This is the
+ read-write device so <minor> will be even.
+
+What: /sys/class/mtd/mtdXro/dev
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ Major and minor numbers of the character device corresponding
+ to the read-only variant of thie MTD device (in
+ <major>:<minor> format). In this case <minor> will be odd.
+
+What: /sys/class/mtd/mtdX/erasesize
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ "Major" erase size for the device. If numeraseregions is
+ zero, this is the eraseblock size for the entire device.
+ Otherwise, the MEMGETREGIONCOUNT/MEMGETREGIONINFO ioctls
+ can be used to determine the actual eraseblock layout.
+
+What: /sys/class/mtd/mtdX/flags
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ A hexadecimal value representing the device flags, ORed
+ together:
+
+ 0x0400: MTD_WRITEABLE - device is writable
+ 0x0800: MTD_BIT_WRITEABLE - single bits can be flipped
+ 0x1000: MTD_NO_ERASE - no erase necessary
+ 0x2000: MTD_POWERUP_LOCK - always locked after reset
+
+What: /sys/class/mtd/mtdX/name
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ A human-readable ASCII name for the device or partition.
+ This will match the name in /proc/mtd .
+
+What: /sys/class/mtd/mtdX/numeraseregions
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ For devices that have variable eraseblock sizes, this
+ provides the total number of erase regions. Otherwise,
+ it will read back as zero.
+
+What: /sys/class/mtd/mtdX/oobsize
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ Number of OOB bytes per page.
+
+What: /sys/class/mtd/mtdX/size
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ Total size of the device/partition, in bytes.
+
+What: /sys/class/mtd/mtdX/type
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ One of the following ASCII strings, representing the device
+ type:
+
+ absent, ram, rom, nor, nand, dataflash, ubi, unknown
+
+What: /sys/class/mtd/mtdX/writesize
+Date: April 2009
+KernelVersion: 2.6.29
+Contact: linux-mtd@lists.infradead.org
+Description:
+ Minimal writable flash unit size. This will always be
+ a positive integer.
+
+ In the case of NOR flash it is 1 (even though individual
+ bits can be cleared).
+
+ In the case of NAND flash it is one NAND page (or a
+ half page, or a quarter page).
+
+ In the case of ECC NOR, it is the ECC block size.
diff --git a/Documentation/ABI/testing/sysfs-class-net-batman-adv b/Documentation/ABI/testing/sysfs-class-net-batman-adv
new file mode 100644
index 00000000000..38dd762def4
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-net-batman-adv
@@ -0,0 +1,14 @@
+
+What: /sys/class/net/<iface>/batman-adv/mesh_iface
+Date: May 2010
+Contact: Marek Lindner <lindner_marek@yahoo.de>
+Description:
+ The /sys/class/net/<iface>/batman-adv/mesh_iface file
+ displays the batman mesh interface this <iface>
+ currently is associated with.
+
+What: /sys/class/net/<iface>/batman-adv/iface_status
+Date: May 2010
+Contact: Marek Lindner <lindner_marek@yahoo.de>
+Description:
+ Indicates the status of <iface> as it is seen by batman.
diff --git a/Documentation/ABI/testing/sysfs-class-net-mesh b/Documentation/ABI/testing/sysfs-class-net-mesh
new file mode 100644
index 00000000000..b02001488ee
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-net-mesh
@@ -0,0 +1,77 @@
+
+What: /sys/class/net/<mesh_iface>/mesh/aggregated_ogms
+Date: May 2010
+Contact: Marek Lindner <lindner_marek@yahoo.de>
+Description:
+ Indicates whether the batman protocol messages of the
+ mesh <mesh_iface> shall be aggregated or not.
+
+What: /sys/class/net/<mesh_iface>/mesh/bonding
+Date: June 2010
+Contact: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
+Description:
+ Indicates whether the data traffic going through the
+ mesh will be sent using multiple interfaces at the
+ same time (if available).
+
+What: /sys/class/net/<mesh_iface>/mesh/fragmentation
+Date: October 2010
+Contact: Andreas Langer <an.langer@gmx.de>
+Description:
+ Indicates whether the data traffic going through the
+ mesh will be fragmented or silently discarded if the
+ packet size exceeds the outgoing interface MTU.
+
+What: /sys/class/net/<mesh_iface>/mesh/ap_isolation
+Date: May 2011
+Contact: Antonio Quartulli <ordex@autistici.org>
+Description:
+ Indicates whether the data traffic going from a
+ wireless client to another wireless client will be
+ silently dropped.
+
+What: /sys/class/net/<mesh_iface>/mesh/gw_bandwidth
+Date: October 2010
+Contact: Marek Lindner <lindner_marek@yahoo.de>
+Description:
+ Defines the bandwidth which is propagated by this
+ node if gw_mode was set to 'server'.
+
+What: /sys/class/net/<mesh_iface>/mesh/gw_mode
+Date: October 2010
+Contact: Marek Lindner <lindner_marek@yahoo.de>
+Description:
+ Defines the state of the gateway features. Can be
+ either 'off', 'client' or 'server'.
+
+What: /sys/class/net/<mesh_iface>/mesh/gw_sel_class
+Date: October 2010
+Contact: Marek Lindner <lindner_marek@yahoo.de>
+Description:
+ Defines the selection criteria this node will use
+ to choose a gateway if gw_mode was set to 'client'.
+
+What: /sys/class/net/<mesh_iface>/mesh/orig_interval
+Date: May 2010
+Contact: Marek Lindner <lindner_marek@yahoo.de>
+Description:
+ Defines the interval in milliseconds in which batman
+ sends its protocol messages.
+
+What: /sys/class/net/<mesh_iface>/mesh/hop_penalty
+Date: Oct 2010
+Contact: Linus Lüssing <linus.luessing@web.de>
+Description:
+ Defines the penalty which will be applied to an
+ originator message's tq-field on every hop.
+
+What: /sys/class/net/<mesh_iface>/mesh/vis_mode
+Date: May 2010
+Contact: Marek Lindner <lindner_marek@yahoo.de>
+Description:
+ Each batman node only maintains information about its
+ own local neighborhood, therefore generating graphs
+ showing the topology of the entire mesh is not easily
+ feasible without having a central instance to collect
+ the local topologies from all nodes. This file allows
+ to activate the collecting (server) mode.
diff --git a/Documentation/ABI/testing/sysfs-class-pktcdvd b/Documentation/ABI/testing/sysfs-class-pktcdvd
new file mode 100644
index 00000000000..b1c3f026335
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-pktcdvd
@@ -0,0 +1,72 @@
+What: /sys/class/pktcdvd/
+Date: Oct. 2006
+KernelVersion: 2.6.20
+Contact: Thomas Maier <balagi@justmail.de>
+Description:
+
+sysfs interface
+---------------
+
+The pktcdvd module (packet writing driver) creates
+these files in the sysfs:
+(<devid> is in format major:minor )
+
+/sys/class/pktcdvd/
+ add (0200) Write a block device id (major:minor)
+ to create a new pktcdvd device and map
+ it to the block device.
+
+ remove (0200) Write the pktcdvd device id (major:minor)
+ to it to remove the pktcdvd device.
+
+ device_map (0444) Shows the device mapping in format:
+ pktcdvd[0-7] <pktdevid> <blkdevid>
+
+/sys/class/pktcdvd/pktcdvd[0-7]/
+ dev (0444) Device id
+ uevent (0200) To send an uevent.
+
+/sys/class/pktcdvd/pktcdvd[0-7]/stat/
+ packets_started (0444) Number of started packets.
+ packets_finished (0444) Number of finished packets.
+
+ kb_written (0444) kBytes written.
+ kb_read (0444) kBytes read.
+ kb_read_gather (0444) kBytes read to fill write packets.
+
+ reset (0200) Write any value to it to reset
+ pktcdvd device statistic values, like
+ bytes read/written.
+
+/sys/class/pktcdvd/pktcdvd[0-7]/write_queue/
+ size (0444) Contains the size of the bio write
+ queue.
+
+ congestion_off (0644) If bio write queue size is below
+ this mark, accept new bio requests
+ from the block layer.
+
+ congestion_on (0644) If bio write queue size is higher
+ as this mark, do no longer accept
+ bio write requests from the block
+ layer and wait till the pktcdvd
+ device has processed enough bio's
+ so that bio write queue size is
+ below congestion off mark.
+ A value of <= 0 disables congestion
+ control.
+
+
+Example:
+--------
+To use the pktcdvd sysfs interface directly, you can do:
+
+# create a new pktcdvd device mapped to /dev/hdc
+echo "22:0" >/sys/class/pktcdvd/add
+cat /sys/class/pktcdvd/device_map
+# assuming device pktcdvd0 was created, look at stat's
+cat /sys/class/pktcdvd/pktcdvd0/stat/kb_written
+# print the device id of the mapped block device
+fgrep pktcdvd0 /sys/class/pktcdvd/device_map
+# remove device, using pktcdvd0 device id 253:0
+echo "253:0" >/sys/class/pktcdvd/remove
diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
new file mode 100644
index 00000000000..78c7baca358
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -0,0 +1,20 @@
+What: /sys/class/power/ds2760-battery.*/charge_now
+Date: May 2010
+KernelVersion: 2.6.35
+Contact: Daniel Mack <daniel@caiaq.de>
+Description:
+ This file is writeable and can be used to set the current
+ coloumb counter value inside the battery monitor chip. This
+ is needed for unavoidable corrections of aging batteries.
+ A userspace daemon can monitor the battery charging logic
+ and once the counter drops out of considerable bounds, take
+ appropriate action.
+
+What: /sys/class/power/ds2760-battery.*/charge_full
+Date: May 2010
+KernelVersion: 2.6.35
+Contact: Daniel Mack <daniel@caiaq.de>
+Description:
+ This file is writeable and can be used to set the assumed
+ battery 'full level'. As batteries age, this value has to be
+ amended over time.
diff --git a/Documentation/ABI/testing/sysfs-class-regulator b/Documentation/ABI/testing/sysfs-class-regulator
new file mode 100644
index 00000000000..e091fa87379
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-regulator
@@ -0,0 +1,351 @@
+What: /sys/class/regulator/.../state
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ state. This reports the regulator enable control, for
+ regulators which can report that input value.
+
+ This will be one of the following strings:
+
+ 'enabled'
+ 'disabled'
+ 'unknown'
+
+ 'enabled' means the regulator output is ON and is supplying
+ power to the system (assuming no error prevents it).
+
+ 'disabled' means the regulator output is OFF and is not
+ supplying power to the system (unless some non-Linux
+ control has enabled it).
+
+ 'unknown' means software cannot determine the state, or
+ the reported state is invalid.
+
+ NOTE: this field can be used in conjunction with microvolts
+ or microamps to determine configured regulator output levels.
+
+
+What: /sys/class/regulator/.../status
+Description:
+ Some regulator directories will contain a field called
+ "status". This reports the current regulator status, for
+ regulators which can report that output value.
+
+ This will be one of the following strings:
+
+ off
+ on
+ error
+ fast
+ normal
+ idle
+ standby
+
+ "off" means the regulator is not supplying power to the
+ system.
+
+ "on" means the regulator is supplying power to the system,
+ and the regulator can't report a detailed operation mode.
+
+ "error" indicates an out-of-regulation status such as being
+ disabled due to thermal shutdown, or voltage being unstable
+ because of problems with the input power supply.
+
+ "fast", "normal", "idle", and "standby" are all detailed
+ regulator operation modes (described elsewhere). They
+ imply "on", but provide more detail.
+
+ Note that regulator status is a function of many inputs,
+ not limited to control inputs from Linux. For example,
+ the actual load presented may trigger "error" status; or
+ a regulator may be enabled by another user, even though
+ Linux did not enable it.
+
+
+What: /sys/class/regulator/.../type
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Each regulator directory will contain a field called
+ type. This holds the regulator type.
+
+ This will be one of the following strings:
+
+ 'voltage'
+ 'current'
+ 'unknown'
+
+ 'voltage' means the regulator output voltage can be controlled
+ by software.
+
+ 'current' means the regulator output current limit can be
+ controlled by software.
+
+ 'unknown' means software cannot control either voltage or
+ current limit.
+
+
+What: /sys/class/regulator/.../microvolts
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ microvolts. This holds the regulator output voltage setting
+ measured in microvolts (i.e. E-6 Volts), for regulators
+ which can report the control input for voltage.
+
+ NOTE: This value should not be used to determine the regulator
+ output voltage level as this value is the same regardless of
+ whether the regulator is enabled or disabled.
+
+
+What: /sys/class/regulator/.../microamps
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ microamps. This holds the regulator output current limit
+ setting measured in microamps (i.e. E-6 Amps), for regulators
+ which can report the control input for a current limit.
+
+ NOTE: This value should not be used to determine the regulator
+ output current level as this value is the same regardless of
+ whether the regulator is enabled or disabled.
+
+
+What: /sys/class/regulator/.../opmode
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ opmode. This holds the current regulator operating mode,
+ for regulators which can report that control input value.
+
+ The opmode value can be one of the following strings:
+
+ 'fast'
+ 'normal'
+ 'idle'
+ 'standby'
+ 'unknown'
+
+ The modes are described in include/linux/regulator/consumer.h
+
+ NOTE: This value should not be used to determine the regulator
+ output operating mode as this value is the same regardless of
+ whether the regulator is enabled or disabled. A "status"
+ attribute may be available to determine the actual mode.
+
+
+What: /sys/class/regulator/.../min_microvolts
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ min_microvolts. This holds the minimum safe working regulator
+ output voltage setting for this domain measured in microvolts,
+ for regulators which support voltage constraints.
+
+ NOTE: this will return the string 'constraint not defined' if
+ the power domain has no min microvolts constraint defined by
+ platform code.
+
+
+What: /sys/class/regulator/.../max_microvolts
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ max_microvolts. This holds the maximum safe working regulator
+ output voltage setting for this domain measured in microvolts,
+ for regulators which support voltage constraints.
+
+ NOTE: this will return the string 'constraint not defined' if
+ the power domain has no max microvolts constraint defined by
+ platform code.
+
+
+What: /sys/class/regulator/.../min_microamps
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ min_microamps. This holds the minimum safe working regulator
+ output current limit setting for this domain measured in
+ microamps, for regulators which support current constraints.
+
+ NOTE: this will return the string 'constraint not defined' if
+ the power domain has no min microamps constraint defined by
+ platform code.
+
+
+What: /sys/class/regulator/.../max_microamps
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ max_microamps. This holds the maximum safe working regulator
+ output current limit setting for this domain measured in
+ microamps, for regulators which support current constraints.
+
+ NOTE: this will return the string 'constraint not defined' if
+ the power domain has no max microamps constraint defined by
+ platform code.
+
+
+What: /sys/class/regulator/.../name
+Date: October 2008
+KernelVersion: 2.6.28
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Each regulator directory will contain a field called
+ name. This holds a string identifying the regulator for
+ display purposes.
+
+ NOTE: this will be empty if no suitable name is provided
+ by platform or regulator drivers.
+
+
+What: /sys/class/regulator/.../num_users
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Each regulator directory will contain a field called
+ num_users. This holds the number of consumer devices that
+ have called regulator_enable() on this regulator.
+
+
+What: /sys/class/regulator/.../requested_microamps
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ requested_microamps. This holds the total requested load
+ current in microamps for this regulator from all its consumer
+ devices.
+
+
+What: /sys/class/regulator/.../parent
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a link called parent.
+ This points to the parent or supply regulator if one exists.
+
+What: /sys/class/regulator/.../suspend_mem_microvolts
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ suspend_mem_microvolts. This holds the regulator output
+ voltage setting for this domain measured in microvolts when
+ the system is suspended to memory, for voltage regulators
+ implementing suspend voltage configuration constraints.
+
+What: /sys/class/regulator/.../suspend_disk_microvolts
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ suspend_disk_microvolts. This holds the regulator output
+ voltage setting for this domain measured in microvolts when
+ the system is suspended to disk, for voltage regulators
+ implementing suspend voltage configuration constraints.
+
+What: /sys/class/regulator/.../suspend_standby_microvolts
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ suspend_standby_microvolts. This holds the regulator output
+ voltage setting for this domain measured in microvolts when
+ the system is suspended to standby, for voltage regulators
+ implementing suspend voltage configuration constraints.
+
+What: /sys/class/regulator/.../suspend_mem_mode
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ suspend_mem_mode. This holds the regulator operating mode
+ setting for this domain when the system is suspended to
+ memory, for regulators implementing suspend mode
+ configuration constraints.
+
+What: /sys/class/regulator/.../suspend_disk_mode
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ suspend_disk_mode. This holds the regulator operating mode
+ setting for this domain when the system is suspended to disk,
+ for regulators implementing suspend mode configuration
+ constraints.
+
+What: /sys/class/regulator/.../suspend_standby_mode
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ suspend_standby_mode. This holds the regulator operating mode
+ setting for this domain when the system is suspended to
+ standby, for regulators implementing suspend mode
+ configuration constraints.
+
+What: /sys/class/regulator/.../suspend_mem_state
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ suspend_mem_state. This holds the regulator operating state
+ when suspended to memory, for regulators implementing suspend
+ configuration constraints.
+
+ This will be one of the same strings reported by
+ the "state" attribute.
+
+What: /sys/class/regulator/.../suspend_disk_state
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ suspend_disk_state. This holds the regulator operating state
+ when suspended to disk, for regulators implementing
+ suspend configuration constraints.
+
+ This will be one of the same strings reported by
+ the "state" attribute.
+
+What: /sys/class/regulator/.../suspend_standby_state
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: Liam Girdwood <lrg@slimlogic.co.uk>
+Description:
+ Some regulator directories will contain a field called
+ suspend_standby_state. This holds the regulator operating
+ state when suspended to standby, for regulators implementing
+ suspend configuration constraints.
+
+ This will be one of the same strings reported by
+ the "state" attribute.
diff --git a/Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration b/Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration
new file mode 100644
index 00000000000..4cf1e72222d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration
@@ -0,0 +1,12 @@
+What: Attribute for calibrating ST-Ericsson AB8500 Real Time Clock
+Date: Oct 2011
+KernelVersion: 3.0
+Contact: Mark Godfrey <mark.godfrey@stericsson.com>
+Description: The rtc_calibration attribute allows the userspace to
+ calibrate the AB8500.s 32KHz Real Time Clock.
+ Every 60 seconds the AB8500 will correct the RTC's value
+ by adding to it the value of this attribute.
+ The range of the attribute is -127 to +127 in units of
+ 30.5 micro-seconds (half-parts-per-million of the 32KHz clock)
+Users: The /vendor/st-ericsson/base_utilities/core/rtc_calibration
+ daemon uses this interface.
diff --git a/Documentation/ABI/testing/sysfs-class-scsi_host b/Documentation/ABI/testing/sysfs-class-scsi_host
new file mode 100644
index 00000000000..29a4f892e43
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-scsi_host
@@ -0,0 +1,13 @@
+What: /sys/class/scsi_host/hostX/isci_id
+Date: June 2011
+Contact: Dave Jiang <dave.jiang@intel.com>
+Description:
+ This file contains the enumerated host ID for the Intel
+ SCU controller. The Intel(R) C600 Series Chipset SATA/SAS
+ Storage Control Unit embeds up to two 4-port controllers in
+ a single PCI device. The controllers are enumerated in order
+ which usually means the lowest number scsi_host corresponds
+ with the first controller, but this association is not
+ guaranteed. The 'isci_id' attribute unambiguously identifies
+ the controller index: '0' for the first controller,
+ '1' for the second.
diff --git a/Documentation/ABI/testing/sysfs-class-uwb_rc b/Documentation/ABI/testing/sysfs-class-uwb_rc
new file mode 100644
index 00000000000..6a5fd072849
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-uwb_rc
@@ -0,0 +1,146 @@
+What: /sys/class/uwb_rc
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Interfaces for WiMedia Ultra Wideband Common Radio
+ Platform (UWB) radio controllers.
+
+ Familiarity with the ECMA-368 'High Rate Ultra
+ Wideband MAC and PHY Specification' is assumed.
+
+What: /sys/class/uwb_rc/beacon_timeout_ms
+Date: July 2008
+KernelVersion: 2.6.27
+Description:
+ If no beacons are received from a device for at least
+ this time, the device will be considered to have gone
+ and it will be removed. The default is 3 superframes
+ (~197 ms) as required by the specification.
+
+What: /sys/class/uwb_rc/uwbN/
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ An individual UWB radio controller.
+
+What: /sys/class/uwb_rc/uwbN/beacon
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Write:
+
+ <channel>
+
+ to force a specific channel to be used when beaconing,
+ or, if <channel> is -1, to prohibit beaconing. If
+ <channel> is 0, then the default channel selection
+ algorithm will be used. Valid channels depends on the
+ radio controller's supported band groups.
+
+ Reading returns the currently active channel, or -1 if
+ the radio controller is not beaconing.
+
+What: /sys/class/uwb_rc/uwbN/scan
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Write:
+
+ <channel> <type> [<bpst offset>]
+
+ to start (or stop) scanning on a channel. <type> is one of:
+ 0 - scan
+ 1 - scan outside BP
+ 2 - scan while inactive
+ 3 - scanning disabled
+ 4 - scan (with start time of <bpst offset>)
+
+What: /sys/class/uwb_rc/uwbN/mac_address
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ The EUI-48, in colon-separated hex octets, for this
+ radio controller. A write will change the radio
+ controller's EUI-48 but only do so while the device is
+ not beaconing or scanning.
+
+What: /sys/class/uwb_rc/uwbN/wusbhc
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ A symlink to the device (if any) of the WUSB Host
+ Controller PAL using this radio controller.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ A neighbour UWB device that has either been detected
+ as part of a scan or is a member of the radio
+ controllers beacon group.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/BPST
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ The time (using the radio controllers internal 1 ms
+ interval superframe timer) of the last beacon from
+ this device was received.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/DevAddr
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ The current DevAddr of this device in colon separated
+ hex octets.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/EUI_48
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+
+ The EUI-48 of this device in colon separated hex
+ octets.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/BPST
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/IEs
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ The latest IEs included in this device's beacon, in
+ space separated hex octets with one IE per line.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/LQE
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Link Quality Estimate - the Signal to Noise Ratio
+ (SNR) of all packets received from this device in dB.
+ This gives an estimate on a suitable PHY rate. Refer
+ to [ECMA-368] section 13.3 for more details.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/RSSI
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Received Signal Strength Indication - the strength of
+ the received signal in dB. LQE is a more useful
+ measure of the radio link quality.
diff --git a/Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc b/Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc
new file mode 100644
index 00000000000..25b1e751b77
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc
@@ -0,0 +1,38 @@
+What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_chid
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Write the CHID (16 space-separated hex octets) for this host controller.
+ This starts the host controller, allowing it to accept connection from
+ WUSB devices.
+
+ Set an all zero CHID to stop the host controller.
+
+What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_trust_timeout
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Devices that haven't sent a WUSB packet to the host
+ within 'wusb_trust_timeout' ms are considered to have
+ disconnected and are removed. The default value of
+ 4000 ms is the value required by the WUSB
+ specification.
+
+ Since this relates to security (specifically, the
+ lifetime of PTKs and GTKs) it should not be changed
+ from the default.
+
+What: /sys/class/uwb_rc/uwbN/wusbhc/wusb_phy_rate
+Date: August 2009
+KernelVersion: 2.6.32
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The maximum PHY rate to use for all connected devices.
+ This is only of limited use for testing and
+ development as the hardware's automatic rate
+ adaptation is better then this simple control.
+
+ Refer to [ECMA-368] section 10.3.1.1 for the value to
+ use.
diff --git a/Documentation/ABI/testing/sysfs-dev b/Documentation/ABI/testing/sysfs-dev
new file mode 100644
index 00000000000..a9f2b8b0530
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-dev
@@ -0,0 +1,20 @@
+What: /sys/dev
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Dan Williams <dan.j.williams@intel.com>
+Description: The /sys/dev tree provides a method to look up the sysfs
+ path for a device using the information returned from
+ stat(2). There are two directories, 'block' and 'char',
+ beneath /sys/dev containing symbolic links with names of
+ the form "<major>:<minor>". These links point to the
+ corresponding sysfs path for the given device.
+
+ Example:
+ $ readlink /sys/dev/block/8:32
+ ../../block/sdc
+
+ Entries in /sys/dev/char and /sys/dev/block will be
+ dynamically created and destroyed as devices enter and
+ leave the system.
+
+Users: mdadm <linux-raid@vger.kernel.org>
diff --git a/Documentation/ABI/testing/sysfs-devices b/Documentation/ABI/testing/sysfs-devices
new file mode 100644
index 00000000000..6a25671ee5f
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices
@@ -0,0 +1,25 @@
+What: /sys/devices
+Date: February 2006
+Contact: Greg Kroah-Hartman <gregkh@suse.de>
+Description:
+ The /sys/devices tree contains a snapshot of the
+ internal state of the kernel device tree. Devices will
+ be added and removed dynamically as the machine runs,
+ and between different kernel versions, the layout of the
+ devices within this tree will change.
+
+ Please do not rely on the format of this tree because of
+ this. If a program wishes to find different things in
+ the tree, please use the /sys/class structure and rely
+ on the symlinks there to point to the proper location
+ within the /sys/devices tree of the individual devices.
+ Or rely on the uevent messages to notify programs of
+ devices being added and removed from this tree to find
+ the location of those devices.
+
+ Note that sometimes not all devices along the directory
+ chain will have emitted uevent messages, so userspace
+ programs must be able to handle such occurrences.
+
+Users:
+ udev <linux-hotplug-devel@lists.sourceforge.net>
diff --git a/Documentation/ABI/testing/sysfs-devices-memory b/Documentation/ABI/testing/sysfs-devices-memory
new file mode 100644
index 00000000000..7405de26ee6
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-memory
@@ -0,0 +1,85 @@
+What: /sys/devices/system/memory
+Date: June 2008
+Contact: Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+ The /sys/devices/system/memory contains a snapshot of the
+ internal state of the kernel memory blocks. Files could be
+ added or removed dynamically to represent hot-add/remove
+ operations.
+Users: hotplug memory add/remove tools
+ http://www.ibm.com/developerworks/wikis/display/LinuxP/powerpc-utils
+
+What: /sys/devices/system/memory/memoryX/removable
+Date: June 2008
+Contact: Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+ The file /sys/devices/system/memory/memoryX/removable
+ indicates whether this memory block is removable or not.
+ This is useful for a user-level agent to determine
+ identify removable sections of the memory before attempting
+ potentially expensive hot-remove memory operation
+Users: hotplug memory remove tools
+ http://www.ibm.com/developerworks/wikis/display/LinuxP/powerpc-utils
+
+What: /sys/devices/system/memory/memoryX/phys_device
+Date: September 2008
+Contact: Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+ The file /sys/devices/system/memory/memoryX/phys_device
+ is read-only and is designed to show the name of physical
+ memory device. Implementation is currently incomplete.
+
+What: /sys/devices/system/memory/memoryX/phys_index
+Date: September 2008
+Contact: Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+ The file /sys/devices/system/memory/memoryX/phys_index
+ is read-only and contains the section ID in hexadecimal
+ which is equivalent to decimal X contained in the
+ memory section directory name.
+
+What: /sys/devices/system/memory/memoryX/state
+Date: September 2008
+Contact: Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+ The file /sys/devices/system/memory/memoryX/state
+ is read-write. When read, its contents show the
+ online/offline state of the memory section. When written,
+ root can toggle the the online/offline state of a removable
+ memory section (see removable file description above)
+ using the following commands.
+ # echo online > /sys/devices/system/memory/memoryX/state
+ # echo offline > /sys/devices/system/memory/memoryX/state
+
+ For example, if /sys/devices/system/memory/memory22/removable
+ contains a value of 1 and
+ /sys/devices/system/memory/memory22/state contains the
+ string "online" the following command can be executed by
+ by root to offline that section.
+ # echo offline > /sys/devices/system/memory/memory22/state
+Users: hotplug memory remove tools
+ http://www.ibm.com/developerworks/wikis/display/LinuxP/powerpc-utils
+
+
+What: /sys/devices/system/memoryX/nodeY
+Date: October 2009
+Contact: Linux Memory Management list <linux-mm@kvack.org>
+Description:
+ When CONFIG_NUMA is enabled, a symbolic link that
+ points to the corresponding NUMA node directory.
+
+ For example, the following symbolic link is created for
+ memory section 9 on node0:
+ /sys/devices/system/memory/memory9/node0 -> ../../node/node0
+
+
+What: /sys/devices/system/node/nodeX/memoryY
+Date: September 2008
+Contact: Gary Hade <garyhade@us.ibm.com>
+Description:
+ When CONFIG_NUMA is enabled
+ /sys/devices/system/node/nodeX/memoryY is a symbolic link that
+ points to the corresponding /sys/devices/system/memory/memoryY
+ memory section directory. For example, the following symbolic
+ link is created for memory section 9 on node0.
+ /sys/devices/system/node/node0/memory9 -> ../../memory/memory9
diff --git a/Documentation/ABI/testing/sysfs-devices-mmc b/Documentation/ABI/testing/sysfs-devices-mmc
new file mode 100644
index 00000000000..5a50ab65584
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-mmc
@@ -0,0 +1,21 @@
+What: /sys/devices/.../mmc_host/mmcX/mmcX:XXXX/enhanced_area_offset
+Date: January 2011
+Contact: Chuanxiao Dong <chuanxiao.dong@intel.com>
+Description:
+ Enhanced area is a new feature defined in eMMC4.4 standard.
+ eMMC4.4 or later card can support such feature. This kind of
+ area can help to improve the card performance. If the feature
+ is enabled, this attribute will indicate the start address of
+ enhanced data area. If not, this attribute will be -EINVAL.
+ Unit Byte. Format decimal.
+
+What: /sys/devices/.../mmc_host/mmcX/mmcX:XXXX/enhanced_area_size
+Date: January 2011
+Contact: Chuanxiao Dong <chuanxiao.dong@intel.com>
+Description:
+ Enhanced area is a new feature defined in eMMC4.4 standard.
+ eMMC4.4 or later card can support such feature. This kind of
+ area can help to improve the card performance. If the feature
+ is enabled, this attribute will indicate the size of enhanced
+ data area. If not, this attribute will be -EINVAL.
+ Unit KByte. Format decimal.
diff --git a/Documentation/ABI/testing/sysfs-devices-node b/Documentation/ABI/testing/sysfs-devices-node
new file mode 100644
index 00000000000..453a210c3ce
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-node
@@ -0,0 +1,7 @@
+What: /sys/devices/system/node/nodeX/compact
+Date: February 2010
+Contact: Mel Gorman <mel@csn.ul.ie>
+Description:
+ When this file is written to, all memory within that node
+ will be compacted. When it completes, memory will be freed
+ into blocks which have as many contiguous pages as possible
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-_UDC_-gadget b/Documentation/ABI/testing/sysfs-devices-platform-_UDC_-gadget
new file mode 100644
index 00000000000..d548eaac230
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-platform-_UDC_-gadget
@@ -0,0 +1,21 @@
+What: /sys/devices/platform/_UDC_/gadget/suspended
+Date: April 2010
+Contact: Fabien Chouteau <fabien.chouteau@barco.com>
+Description:
+ Show the suspend state of an USB composite gadget.
+ 1 -> suspended
+ 0 -> resumed
+
+ (_UDC_ is the name of the USB Device Controller driver)
+
+What: /sys/devices/platform/_UDC_/gadget/gadget-lunX/nofua
+Date: July 2010
+Contact: Andy Shevchenko <andy.shevchenko@gmail.com>
+Description:
+ Show or set the reaction on the FUA (Force Unit Access) bit in
+ the SCSI WRITE(10,12) commands when a gadget in USB Mass
+ Storage mode.
+
+ Possible values are:
+ 1 -> ignore the FUA flag
+ 0 -> obey the FUA flag
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-docg3 b/Documentation/ABI/testing/sysfs-devices-platform-docg3
new file mode 100644
index 00000000000..8aa36716882
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-platform-docg3
@@ -0,0 +1,34 @@
+What: /sys/devices/platform/docg3/f[0-3]_dps[01]_is_keylocked
+Date: November 2011
+KernelVersion: 3.3
+Contact: Robert Jarzmik <robert.jarzmik@free.fr>
+Description:
+ Show whether the floor (0 to 4), protection area (0 or 1) is
+ keylocked. Each docg3 chip (or floor) has 2 protection areas,
+ which can cover any part of it, block aligned, called DPS.
+ The protection has information embedded whether it blocks reads,
+ writes or both.
+ The result is:
+ 0 -> the DPS is not keylocked
+ 1 -> the DPS is keylocked
+Users: None identified so far.
+
+What: /sys/devices/platform/docg3/f[0-3]_dps[01]_protection_key
+Date: November 2011
+KernelVersion: 3.3
+Contact: Robert Jarzmik <robert.jarzmik@free.fr>
+Description:
+ Enter the protection key for the floor (0 to 4), protection area
+ (0 or 1). Each docg3 chip (or floor) has 2 protection areas,
+ which can cover any part of it, block aligned, called DPS.
+ The protection has information embedded whether it blocks reads,
+ writes or both.
+ The protection key is a string of 8 bytes (value 0-255).
+ Entering the correct value toggle the lock, and can be observed
+ through f[0-3]_dps[01]_is_keylocked.
+ Possible values are:
+ - 8 bytes
+ Typical values are:
+ - "00000000"
+ - "12345678"
+Users: None identified so far.
diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power
new file mode 100644
index 00000000000..8ffbc25376a
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-power
@@ -0,0 +1,167 @@
+What: /sys/devices/.../power/
+Date: January 2009
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../power directory contains attributes
+ allowing the user space to check and modify some power
+ management related properties of given device.
+
+What: /sys/devices/.../power/wakeup
+Date: January 2009
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../power/wakeup attribute allows the user
+ space to check if the device is enabled to wake up the system
+ from sleep states, such as the memory sleep state (suspend to
+ RAM) and hibernation (suspend to disk), and to enable or disable
+ it to do that as desired.
+
+ Some devices support "wakeup" events, which are hardware signals
+ used to activate the system from a sleep state. Such devices
+ have one of the following two values for the sysfs power/wakeup
+ file:
+
+ + "enabled\n" to issue the events;
+ + "disabled\n" not to do so;
+
+ In that cases the user space can change the setting represented
+ by the contents of this file by writing either "enabled", or
+ "disabled" to it.
+
+ For the devices that are not capable of generating system wakeup
+ events this file is not present. In that case the device cannot
+ be enabled to wake up the system from sleep states.
+
+What: /sys/devices/.../power/control
+Date: January 2009
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../power/control attribute allows the user
+ space to control the run-time power management of the device.
+
+ All devices have one of the following two values for the
+ power/control file:
+
+ + "auto\n" to allow the device to be power managed at run time;
+ + "on\n" to prevent the device from being power managed;
+
+ The default for all devices is "auto", which means that they may
+ be subject to automatic power management, depending on their
+ drivers. Changing this attribute to "on" prevents the driver
+ from power managing the device at run time. Doing that while
+ the device is suspended causes it to be woken up.
+
+What: /sys/devices/.../power/async
+Date: January 2009
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../async attribute allows the user space to
+ enable or diasble the device's suspend and resume callbacks to
+ be executed asynchronously (ie. in separate threads, in parallel
+ with the main suspend/resume thread) during system-wide power
+ transitions (eg. suspend to RAM, hibernation).
+
+ All devices have one of the following two values for the
+ power/async file:
+
+ + "enabled\n" to permit the asynchronous suspend/resume;
+ + "disabled\n" to forbid it;
+
+ The value of this attribute may be changed by writing either
+ "enabled", or "disabled" to it.
+
+ It generally is unsafe to permit the asynchronous suspend/resume
+ of a device unless it is certain that all of the PM dependencies
+ of the device are known to the PM core. However, for some
+ devices this attribute is set to "enabled" by bus type code or
+ device drivers and in that cases it should be safe to leave the
+ default value.
+
+What: /sys/devices/.../power/wakeup_count
+Date: September 2010
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../wakeup_count attribute contains the number
+ of signaled wakeup events associated with the device. This
+ attribute is read-only. If the device is not enabled to wake up
+ the system from sleep states, this attribute is not present.
+
+What: /sys/devices/.../power/wakeup_active_count
+Date: September 2010
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../wakeup_active_count attribute contains the
+ number of times the processing of wakeup events associated with
+ the device was completed (at the kernel level). This attribute
+ is read-only. If the device is not enabled to wake up the
+ system from sleep states, this attribute is not present.
+
+What: /sys/devices/.../power/wakeup_hit_count
+Date: September 2010
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../wakeup_hit_count attribute contains the
+ number of times the processing of a wakeup event associated with
+ the device might prevent the system from entering a sleep state.
+ This attribute is read-only. If the device is not enabled to
+ wake up the system from sleep states, this attribute is not
+ present.
+
+What: /sys/devices/.../power/wakeup_active
+Date: September 2010
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../wakeup_active attribute contains either 1,
+ or 0, depending on whether or not a wakeup event associated with
+ the device is being processed (1). This attribute is read-only.
+ If the device is not enabled to wake up the system from sleep
+ states, this attribute is not present.
+
+What: /sys/devices/.../power/wakeup_total_time_ms
+Date: September 2010
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../wakeup_total_time_ms attribute contains
+ the total time of processing wakeup events associated with the
+ device, in milliseconds. This attribute is read-only. If the
+ device is not enabled to wake up the system from sleep states,
+ this attribute is not present.
+
+What: /sys/devices/.../power/wakeup_max_time_ms
+Date: September 2010
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../wakeup_max_time_ms attribute contains
+ the maximum time of processing a single wakeup event associated
+ with the device, in milliseconds. This attribute is read-only.
+ If the device is not enabled to wake up the system from sleep
+ states, this attribute is not present.
+
+What: /sys/devices/.../power/wakeup_last_time_ms
+Date: September 2010
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/devices/.../wakeup_last_time_ms attribute contains
+ the value of the monotonic clock corresponding to the time of
+ signaling the last wakeup event associated with the device, in
+ milliseconds. This attribute is read-only. If the device is
+ not enabled to wake up the system from sleep states, this
+ attribute is not present.
+
+What: /sys/devices/.../power/autosuspend_delay_ms
+Date: September 2010
+Contact: Alan Stern <stern@rowland.harvard.edu>
+Description:
+ The /sys/devices/.../power/autosuspend_delay_ms attribute
+ contains the autosuspend delay value (in milliseconds). Some
+ drivers do not want their device to suspend as soon as it
+ becomes idle at run time; they want the device to remain
+ inactive for a certain minimum period of time first. That
+ period is called the autosuspend delay. Negative values will
+ prevent the device from being suspended at run time (similar
+ to writing "on" to the power/control attribute). Values >=
+ 1000 will cause the autosuspend timer expiration to be rounded
+ up to the nearest second.
+
+ Not all drivers support this attribute. If it isn't supported,
+ attempts to read or write it will yield I/O errors.
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
new file mode 100644
index 00000000000..e7be75b96e4
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -0,0 +1,203 @@
+What: /sys/devices/system/cpu/
+Date: pre-git history
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+ A collection of both global and individual CPU attributes
+
+ Individual CPU attributes are contained in subdirectories
+ named by the kernel's logical CPU number, e.g.:
+
+ /sys/devices/system/cpu/cpu#/
+
+What: /sys/devices/system/cpu/sched_mc_power_savings
+ /sys/devices/system/cpu/sched_smt_power_savings
+Date: June 2006
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: Discover and adjust the kernel's multi-core scheduler support.
+
+ Possible values are:
+
+ 0 - No power saving load balance (default value)
+ 1 - Fill one thread/core/package first for long running threads
+ 2 - Also bias task wakeups to semi-idle cpu package for power
+ savings
+
+ sched_mc_power_savings is dependent upon SCHED_MC, which is
+ itself architecture dependent.
+
+ sched_smt_power_savings is dependent upon SCHED_SMT, which
+ is itself architecture dependent.
+
+ The two files are independent of each other. It is possible
+ that one file may be present without the other.
+
+ Introduced by git commit 5c45bf27.
+
+
+What: /sys/devices/system/cpu/kernel_max
+ /sys/devices/system/cpu/offline
+ /sys/devices/system/cpu/online
+ /sys/devices/system/cpu/possible
+ /sys/devices/system/cpu/present
+Date: December 2008
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: CPU topology files that describe kernel limits related to
+ hotplug. Briefly:
+
+ kernel_max: the maximum cpu index allowed by the kernel
+ configuration.
+
+ offline: cpus that are not online because they have been
+ HOTPLUGGED off or exceed the limit of cpus allowed by the
+ kernel configuration (kernel_max above).
+
+ online: cpus that are online and being scheduled.
+
+ possible: cpus that have been allocated resources and can be
+ brought online if they are present.
+
+ present: cpus that have been identified as being present in
+ the system.
+
+ See Documentation/cputopology.txt for more information.
+
+
+What: /sys/devices/system/cpu/probe
+ /sys/devices/system/cpu/release
+Date: November 2009
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: Dynamic addition and removal of CPU's. This is not hotplug
+ removal, this is meant complete removal/addition of the CPU
+ from the system.
+
+ probe: writes to this file will dynamically add a CPU to the
+ system. Information written to the file to add CPU's is
+ architecture specific.
+
+ release: writes to this file dynamically remove a CPU from
+ the system. Information writtento the file to remove CPU's
+ is architecture specific.
+
+What: /sys/devices/system/cpu/cpu#/node
+Date: October 2009
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description: Discover NUMA node a CPU belongs to
+
+ When CONFIG_NUMA is enabled, a symbolic link that points
+ to the corresponding NUMA node directory.
+
+ For example, the following symlink is created for cpu42
+ in NUMA node 2:
+
+ /sys/devices/system/cpu/cpu42/node2 -> ../../node/node2
+
+
+What: /sys/devices/system/cpu/cpu#/node
+Date: October 2009
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description: Discover NUMA node a CPU belongs to
+
+ When CONFIG_NUMA is enabled, a symbolic link that points
+ to the corresponding NUMA node directory.
+
+ For example, the following symlink is created for cpu42
+ in NUMA node 2:
+
+ /sys/devices/system/cpu/cpu42/node2 -> ../../node/node2
+
+
+What: /sys/devices/system/cpu/cpu#/topology/core_id
+ /sys/devices/system/cpu/cpu#/topology/core_siblings
+ /sys/devices/system/cpu/cpu#/topology/core_siblings_list
+ /sys/devices/system/cpu/cpu#/topology/physical_package_id
+ /sys/devices/system/cpu/cpu#/topology/thread_siblings
+ /sys/devices/system/cpu/cpu#/topology/thread_siblings_list
+Date: December 2008
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: CPU topology files that describe a logical CPU's relationship
+ to other cores and threads in the same physical package.
+
+ One cpu# directory is created per logical CPU in the system,
+ e.g. /sys/devices/system/cpu/cpu42/.
+
+ Briefly, the files above are:
+
+ core_id: the CPU core ID of cpu#. Typically it is the
+ hardware platform's identifier (rather than the kernel's).
+ The actual value is architecture and platform dependent.
+
+ core_siblings: internal kernel map of cpu#'s hardware threads
+ within the same physical_package_id.
+
+ core_siblings_list: human-readable list of the logical CPU
+ numbers within the same physical_package_id as cpu#.
+
+ physical_package_id: physical package id of cpu#. Typically
+ corresponds to a physical socket number, but the actual value
+ is architecture and platform dependent.
+
+ thread_siblings: internel kernel map of cpu#'s hardware
+ threads within the same core as cpu#
+
+ thread_siblings_list: human-readable list of cpu#'s hardware
+ threads within the same core as cpu#
+
+ See Documentation/cputopology.txt for more information.
+
+
+What: /sys/devices/system/cpu/cpuidle/current_driver
+ /sys/devices/system/cpu/cpuidle/current_governer_ro
+Date: September 2007
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: Discover cpuidle policy and mechanism
+
+ Various CPUs today support multiple idle levels that are
+ differentiated by varying exit latencies and power
+ consumption during idle.
+
+ Idle policy (governor) is differentiated from idle mechanism
+ (driver)
+
+ current_driver: displays current idle mechanism
+
+ current_governor_ro: displays current idle policy
+
+ See files in Documentation/cpuidle/ for more information.
+
+
+What: /sys/devices/system/cpu/cpu#/cpufreq/*
+Date: pre-git history
+Contact: cpufreq@vger.kernel.org
+Description: Discover and change clock speed of CPUs
+
+ Clock scaling allows you to change the clock speed of the
+ CPUs on the fly. This is a nice method to save battery
+ power, because the lower the clock speed, the less power
+ the CPU consumes.
+
+ There are many knobs to tweak in this directory.
+
+ See files in Documentation/cpu-freq/ for more information.
+
+ In particular, read Documentation/cpu-freq/user-guide.txt
+ to learn how to control the knobs.
+
+
+What: /sys/devices/system/cpu/cpu*/cache/index3/cache_disable_{0,1}
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: discuss@x86-64.org
+Description: Disable L3 cache indices
+
+ These files exist in every CPU's cache/index3 directory. Each
+ cache_disable_{0,1} file corresponds to one disable slot which
+ can be used to disable a cache index. Reading from these files
+ on a processor with this functionality will return the currently
+ disabled index for that node. There is one L3 structure per
+ node, or per internal node on MCM machines. Writing a valid
+ index to one of these files will cause the specificed cache
+ index to be disabled.
+
+ All AMD processors with L3 caches provide this functionality.
+ For details, see BKDGs at
+ http://developer.amd.com/documentation/guides/Pages/default.aspx
diff --git a/Documentation/ABI/testing/sysfs-devices-system-ibm-rtl b/Documentation/ABI/testing/sysfs-devices-system-ibm-rtl
new file mode 100644
index 00000000000..b82deeaec31
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-system-ibm-rtl
@@ -0,0 +1,22 @@
+What: state
+Date: Sep 2010
+KernelVersion: 2.6.37
+Contact: Vernon Mauery <vernux@us.ibm.com>
+Description: The state file allows a means by which to change in and
+ out of Premium Real-Time Mode (PRTM), as well as the
+ ability to query the current state.
+ 0 => PRTM off
+ 1 => PRTM enabled
+Users: The ibm-prtm userspace daemon uses this interface.
+
+
+What: version
+Date: Sep 2010
+KernelVersion: 2.6.37
+Contact: Vernon Mauery <vernux@us.ibm.com>
+Description: The version file provides a means by which to query
+ the RTL table version that lives in the Extended
+ BIOS Data Area (EBDA).
+Users: The ibm-prtm userspace daemon uses this interface.
+
+
diff --git a/Documentation/ABI/testing/sysfs-driver-hid b/Documentation/ABI/testing/sysfs-driver-hid
new file mode 100644
index 00000000000..b6490e14fe8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid
@@ -0,0 +1,10 @@
+What: For USB devices : /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/report_descriptor
+ For BT devices : /sys/class/bluetooth/hci<addr>/<hid-bus>:<vendor-id>:<product-id>.<num>/report_descriptor
+ Symlink : /sys/class/hidraw/hidraw<num>/device/report_descriptor
+Date: Jan 2011
+KernelVersion: 2.0.39
+Contact: Alan Ott <alan@signal11.us>
+Description: When read, this file returns the device's raw binary HID
+ report descriptor.
+ This file cannot be written.
+Users: HIDAPI library (http://www.signal11.us/oss/hidapi)
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff b/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff
new file mode 100644
index 00000000000..167d9032b97
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff
@@ -0,0 +1,7 @@
+What: /sys/module/hid_logitech/drivers/hid:logitech/<dev>/range.
+Date: July 2011
+KernelVersion: 3.2
+Contact: Michal Malý <madcatxster@gmail.com>
+Description: Display minimum, maximum and current range of the steering
+ wheel. Writing a value within min and max boundaries sets the
+ range of the wheel.
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-multitouch b/Documentation/ABI/testing/sysfs-driver-hid-multitouch
new file mode 100644
index 00000000000..f79839d1af3
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-multitouch
@@ -0,0 +1,9 @@
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/quirks
+Date: November 2011
+Contact: Benjamin Tissoires <benjamin.tissoires@gmail.com>
+Description: The integer value of this attribute corresponds to the
+ quirks actually in place to handle the device's protocol.
+ When read, this attribute returns the current settings (see
+ MT_QUIRKS_* in hid-multitouch.c).
+ When written this attribute change on the fly the quirks, then
+ the protocol to handle the device.
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-picolcd b/Documentation/ABI/testing/sysfs-driver-hid-picolcd
new file mode 100644
index 00000000000..08579e7e1e8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-picolcd
@@ -0,0 +1,43 @@
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode
+Date: March 2010
+Contact: Bruno Prémont <bonbons@linux-vserver.org>
+Description: Make it possible to switch the PicoLCD device between LCD
+ (firmware) and bootloader (flasher) operation modes.
+
+ Reading: returns list of available modes, the active mode being
+ enclosed in brackets ('[' and ']')
+
+ Writing: causes operation mode switch. Permitted values are
+ the non-active mode names listed when read.
+
+ Note: when switching mode the current PicoLCD HID device gets
+ disconnected and reconnects after above delay (see attribute
+ operation_mode_delay for its value).
+
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode_delay
+Date: April 2010
+Contact: Bruno Prémont <bonbons@linux-vserver.org>
+Description: Delay PicoLCD waits before restarting in new mode when
+ operation_mode has changed.
+
+ Reading/Writing: It is expressed in ms and permitted range is
+ 0..30000ms.
+
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/fb_update_rate
+Date: March 2010
+Contact: Bruno Prémont <bonbons@linux-vserver.org>
+Description: Make it possible to adjust defio refresh rate.
+
+ Reading: returns list of available refresh rates (expressed in Hz),
+ the active refresh rate being enclosed in brackets ('[' and ']')
+
+ Writing: accepts new refresh rate expressed in integer Hz
+ within permitted rates.
+
+ Note: As device can barely do 2 complete refreshes a second
+ it only makes sense to adjust this value if only one or two
+ tiles get changed and it's not appropriate to expect the application
+ to flush it's tiny changes explicitely at higher than default rate.
+
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-prodikeys b/Documentation/ABI/testing/sysfs-driver-hid-prodikeys
new file mode 100644
index 00000000000..05d988c29a8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-prodikeys
@@ -0,0 +1,29 @@
+What: /sys/bus/hid/drivers/prodikeys/.../channel
+Date: April 2010
+KernelVersion: 2.6.34
+Contact: Don Prince <dhprince.devel@yahoo.co.uk>
+Description:
+ Allows control (via software) the midi channel to which
+ that the pc-midi keyboard will output.midi data.
+ Range: 0..15
+ Type: Read/write
+What: /sys/bus/hid/drivers/prodikeys/.../sustain
+Date: April 2010
+KernelVersion: 2.6.34
+Contact: Don Prince <dhprince.devel@yahoo.co.uk>
+Description:
+ Allows control (via software) the sustain duration of a
+ note held by the pc-midi driver.
+ 0 means sustain mode is disabled.
+ Range: 0..5000 (milliseconds)
+ Type: Read/write
+What: /sys/bus/hid/drivers/prodikeys/.../octave
+Date: April 2010
+KernelVersion: 2.6.34
+Contact: Don Prince <dhprince.devel@yahoo.co.uk>
+Description:
+ Controls the octave shift modifier in the pc-midi driver.
+ The octave can be shifted via software up/down 2 octaves.
+ 0 means the no ocatve shift.
+ Range: -2..2 (minus 2 to plus 2)
+ Type: Read/Write
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-arvo b/Documentation/ABI/testing/sysfs-driver-hid-roccat-arvo
new file mode 100644
index 00000000000..55e281b0071
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-arvo
@@ -0,0 +1,53 @@
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/arvo/roccatarvo<minor>/actual_profile
+Date: Januar 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The integer value of this attribute ranges from 1-5.
+ When read, this attribute returns the number of the actual
+ profile which is also the profile that's active on device startup.
+ When written this attribute activates the selected profile
+ immediately.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/arvo/roccatarvo<minor>/button
+Date: Januar 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The keyboard can store short macros with consist of 1 button with
+ several modifier keys internally.
+ When written, this file lets one set the sequence for a specific
+ button for a specific profile. Button and profile numbers are
+ included in written data. The data has to be 24 bytes long.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/arvo/roccatarvo<minor>/info
+Date: Januar 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns some info about the device like the
+ installed firmware version.
+ The size of the data is 8 bytes in size.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/arvo/roccatarvo<minor>/key_mask
+Date: Januar 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The keyboard lets the user deactivate 5 certain keys like the
+ windows and application keys, to protect the user from the outcome
+ of accidentally pressing them.
+ The integer value of this attribute has bits 0-4 set depending
+ on the state of the corresponding key.
+ When read, this file returns the current state of the buttons.
+ When written, the given buttons are activated/deactivated
+ immediately.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/arvo/roccatarvo<minor>/mode_key
+Date: Januar 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The keyboard has a condensed layout without num-lock key.
+ Instead it uses a mode-key which activates a gaming mode where
+ the assignment of the number block changes.
+ The integer value of this attribute ranges from 0 (OFF) to 1 (ON).
+ When read, this file returns the actual state of the key.
+ When written, the key is activated/deactivated immediately.
+Users: http://roccat.sourceforge.net
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-isku b/Documentation/ABI/testing/sysfs-driver-hid-roccat-isku
new file mode 100644
index 00000000000..189dc43891b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-isku
@@ -0,0 +1,135 @@
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/actual_profile
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The integer value of this attribute ranges from 0-4.
+ When read, this attribute returns the number of the actual
+ profile. This value is persistent, so its equivalent to the
+ profile that's active when the device is powered on next time.
+ When written, this file sets the number of the startup profile
+ and the device activates this profile immediately.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/info
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns general data like firmware version.
+ The data is 6 bytes long.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/key_mask
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one deactivate certain keys like
+ windows and application keys, to prevent accidental presses.
+ Profile number for which this settings occur is included in
+ written data. The data has to be 6 bytes long.
+ Before reading this file, control has to be written to select
+ which profile to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/keys_capslock
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one set the function of the
+ capslock key for a specific profile. Profile number is included
+ in written data. The data has to be 6 bytes long.
+ Before reading this file, control has to be written to select
+ which profile to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/keys_easyzone
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one set the function of the
+ easyzone keys for a specific profile. Profile number is included
+ in written data. The data has to be 65 bytes long.
+ Before reading this file, control has to be written to select
+ which profile to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/keys_function
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one set the function of the
+ function keys for a specific profile. Profile number is included
+ in written data. The data has to be 41 bytes long.
+ Before reading this file, control has to be written to select
+ which profile to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/keys_macro
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one set the function of the macro
+ keys for a specific profile. Profile number is included in
+ written data. The data has to be 35 bytes long.
+ Before reading this file, control has to be written to select
+ which profile to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/keys_media
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one set the function of the media
+ keys for a specific profile. Profile number is included in
+ written data. The data has to be 29 bytes long.
+ Before reading this file, control has to be written to select
+ which profile to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/keys_thumbster
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one set the function of the
+ thumbster keys for a specific profile. Profile number is included
+ in written data. The data has to be 23 bytes long.
+ Before reading this file, control has to be written to select
+ which profile to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/last_set
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one set the time in secs since
+ epoch in which the last configuration took place.
+ The data has to be 20 bytes long.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/light
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one set the backlight intensity for
+ a specific profile. Profile number is included in written data.
+ The data has to be 10 bytes long.
+ Before reading this file, control has to be written to select
+ which profile to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/macro
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one store macros with max 500
+ keystrokes for a specific button for a specific profile.
+ Button and profile numbers are included in written data.
+ The data has to be 2083 bytes long.
+ Before reading this file, control has to be written to select
+ which profile and key to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/control
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one select which data from which
+ profile will be read next. The data has to be 3 bytes long.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/isku/roccatisku<minor>/talk
+Date: June 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written, this file lets one trigger easyshift functionality
+ from the host.
+ The data has to be 16 bytes long.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-kone b/Documentation/ABI/testing/sysfs-driver-hid-roccat-kone
new file mode 100644
index 00000000000..3ca3971109b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-kone
@@ -0,0 +1,106 @@
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kone/roccatkone<minor>/actual_dpi
+Date: March 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: It is possible to switch the dpi setting of the mouse with the
+ press of a button.
+ When read, this file returns the raw number of the actual dpi
+ setting reported by the mouse. This number has to be further
+ processed to receive the real dpi value.
+
+ VALUE DPI
+ 1 800
+ 2 1200
+ 3 1600
+ 4 2000
+ 5 2400
+ 6 3200
+
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kone/roccatkone<minor>/actual_profile
+Date: March 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns the number of the actual profile.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kone/roccatkone<minor>/firmware_version
+Date: March 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns the raw integer version number of the
+ firmware reported by the mouse. Using the integer value eases
+ further usage in other programs. To receive the real version
+ number the decimal point has to be shifted 2 positions to the
+ left. E.g. a returned value of 138 means 1.38
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kone/roccatkone<minor>/profile[1-5]
+Date: March 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile holds information like button
+ mappings, sensitivity, the colors of the 5 leds and light
+ effects.
+ When read, these files return the respective profile. The
+ returned data is 975 bytes in size.
+ When written, this file lets one write the respective profile
+ data back to the mouse. The data has to be 975 bytes long.
+ The mouse will reject invalid data, whereas the profile number
+ stored in the profile doesn't need to fit the number of the
+ store.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kone/roccatkone<minor>/settings
+Date: March 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns the settings stored in the mouse.
+ The size of the data is 36 bytes and holds information like the
+ startup_profile, tcu state and calibration_data.
+ When written, this file lets write settings back to the mouse.
+ The data has to be 36 bytes long. The mouse will reject invalid
+ data.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kone/roccatkone<minor>/startup_profile
+Date: March 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The integer value of this attribute ranges from 1 to 5.
+ When read, this attribute returns the number of the profile
+ that's active when the mouse is powered on.
+ When written, this file sets the number of the startup profile
+ and the mouse activates this profile immediately.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kone/roccatkone<minor>/tcu
+Date: March 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse has a "Tracking Control Unit" which lets the user
+ calibrate the laser power to fit the mousepad surface.
+ When read, this file returns the current state of the TCU,
+ where 0 means off and 1 means on.
+ Writing 0 in this file will switch the TCU off.
+ Writing 1 in this file will start the calibration which takes
+ around 6 seconds to complete and activates the TCU.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kone/roccatkone<minor>/weight
+Date: March 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can be equipped with one of four supplied weights
+ ranging from 5 to 20 grams which are recognized by the mouse
+ and its value can be read out. When read, this file returns the
+ raw value returned by the mouse which eases further processing
+ in other software.
+ The values map to the weights as follows:
+
+ VALUE WEIGHT
+ 0 none
+ 1 5g
+ 2 10g
+ 3 15g
+ 4 20g
+
+ This file is readonly.
+Users: http://roccat.sourceforge.net
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus
new file mode 100644
index 00000000000..65e6e5dd67e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus
@@ -0,0 +1,120 @@
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/actual_profile
+Date: October 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The integer value of this attribute ranges from 0-4.
+ When read, this attribute returns the number of the actual
+ profile. This value is persistent, so its equivalent to the
+ profile that's active when the mouse is powered on next time.
+ When written, this file sets the number of the startup profile
+ and the mouse activates this profile immediately.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/firmware_version
+Date: October 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns the raw integer version number of the
+ firmware reported by the mouse. Using the integer value eases
+ further usage in other programs. To receive the real version
+ number the decimal point has to be shifted 2 positions to the
+ left. E.g. a returned value of 121 means 1.21
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/macro
+Date: October 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store a macro with max 500 key/button strokes
+ internally.
+ When written, this file lets one set the sequence for a specific
+ button for a specific profile. Button and profile numbers are
+ included in written data. The data has to be 2082 bytes long.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/profile_buttons
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_buttons holds information about button layout.
+ When written, this file lets one write the respective profile
+ buttons back to the mouse. The data has to be 77 bytes long.
+ The mouse will reject invalid data.
+ Which profile to write is determined by the profile number
+ contained in the data.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/profile[1-5]_buttons
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_buttons holds information about button layout.
+ When read, these files return the respective profile buttons.
+ The returned data is 77 bytes in size.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/profile_settings
+Date: October 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_settings holds information like resolution, sensitivity
+ and light effects.
+ When written, this file lets one write the respective profile
+ settings back to the mouse. The data has to be 43 bytes long.
+ The mouse will reject invalid data.
+ Which profile to write is determined by the profile number
+ contained in the data.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/profile[1-5]_settings
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_settings holds information like resolution, sensitivity
+ and light effects.
+ When read, these files return the respective profile settings.
+ The returned data is 43 bytes in size.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/sensor
+Date: October 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse has a tracking- and a distance-control-unit. These
+ can be activated/deactivated and the lift-off distance can be
+ set. The data has to be 6 bytes long.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/talk
+Date: May 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: Used to active some easy* functions of the mouse from outside.
+ The data has to be 16 bytes long.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/tcu
+Date: October 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When written a calibration process for the tracking control unit
+ can be initiated/cancelled.
+ The data has to be 3 bytes long.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/tcu_image
+Date: October 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read the mouse returns a 30x30 pixel image of the
+ sampled underground. This works only in the course of a
+ calibration process initiated with tcu.
+ The returned data is 1028 bytes in size.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-kovaplus b/Documentation/ABI/testing/sysfs-driver-hid-roccat-kovaplus
new file mode 100644
index 00000000000..20f937c9d84
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-kovaplus
@@ -0,0 +1,100 @@
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_cpi
+Date: January 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The integer value of this attribute ranges from 1-4.
+ When read, this attribute returns the number of the active
+ cpi level.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_profile
+Date: January 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The integer value of this attribute ranges from 0-4.
+ When read, this attribute returns the number of the active
+ profile.
+ When written, the mouse activates this profile immediately.
+ The profile that's active when powered down is the same that's
+ active when the mouse is powered on.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_sensitivity_x
+Date: January 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The integer value of this attribute ranges from 1-10.
+ When read, this attribute returns the number of the actual
+ sensitivity in x direction.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/actual_sensitivity_y
+Date: January 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The integer value of this attribute ranges from 1-10.
+ When read, this attribute returns the number of the actual
+ sensitivity in y direction.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/firmware_version
+Date: January 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns the raw integer version number of the
+ firmware reported by the mouse. Using the integer value eases
+ further usage in other programs. To receive the real version
+ number the decimal point has to be shifted 2 positions to the
+ left. E.g. a returned value of 121 means 1.21
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/profile_buttons
+Date: January 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_buttons holds information about button layout.
+ When written, this file lets one write the respective profile
+ buttons back to the mouse. The data has to be 23 bytes long.
+ The mouse will reject invalid data.
+ Which profile to write is determined by the profile number
+ contained in the data.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/profile[1-5]_buttons
+Date: January 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_buttons holds information about button layout.
+ When read, these files return the respective profile buttons.
+ The returned data is 23 bytes in size.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/profile_settings
+Date: January 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_settings holds information like resolution, sensitivity
+ and light effects.
+ When written, this file lets one write the respective profile
+ settings back to the mouse. The data has to be 16 bytes long.
+ The mouse will reject invalid data.
+ Which profile to write is determined by the profile number
+ contained in the data.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/kovaplus/roccatkovaplus<minor>/profile[1-5]_settings
+Date: January 2011
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_settings holds information like resolution, sensitivity
+ and light effects.
+ When read, these files return the respective profile settings.
+ The returned data is 16 bytes in size.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-pyra b/Documentation/ABI/testing/sysfs-driver-hid-roccat-pyra
new file mode 100644
index 00000000000..3f8de50e4ff
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-pyra
@@ -0,0 +1,107 @@
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/pyra/roccatpyra<minor>/actual_cpi
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: It is possible to switch the cpi setting of the mouse with the
+ press of a button.
+ When read, this file returns the raw number of the actual cpi
+ setting reported by the mouse. This number has to be further
+ processed to receive the real dpi value.
+
+ VALUE DPI
+ 1 400
+ 2 800
+ 4 1600
+
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/pyra/roccatpyra<minor>/actual_profile
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns the number of the actual profile in
+ range 0-4.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/pyra/roccatpyra<minor>/firmware_version
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns the raw integer version number of the
+ firmware reported by the mouse. Using the integer value eases
+ further usage in other programs. To receive the real version
+ number the decimal point has to be shifted 2 positions to the
+ left. E.g. a returned value of 138 means 1.38
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/pyra/roccatpyra<minor>/profile_settings
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_settings holds information like resolution, sensitivity
+ and light effects.
+ When written, this file lets one write the respective profile
+ settings back to the mouse. The data has to be 13 bytes long.
+ The mouse will reject invalid data.
+ Which profile to write is determined by the profile number
+ contained in the data.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/pyra/roccatpyra<minor>/profile[1-5]_settings
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_settings holds information like resolution, sensitivity
+ and light effects.
+ When read, these files return the respective profile settings.
+ The returned data is 13 bytes in size.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/pyra/roccatpyra<minor>/profile_buttons
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_buttons holds information about button layout.
+ When written, this file lets one write the respective profile
+ buttons back to the mouse. The data has to be 19 bytes long.
+ The mouse will reject invalid data.
+ Which profile to write is determined by the profile number
+ contained in the data.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/pyra/roccatpyra<minor>/profile[1-5]_buttons
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split in settings and buttons.
+ profile_buttons holds information about button layout.
+ When read, these files return the respective profile buttons.
+ The returned data is 19 bytes in size.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/pyra/roccatpyra<minor>/startup_profile
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: The integer value of this attribute ranges from 0-4.
+ When read, this attribute returns the number of the profile
+ that's active when the mouse is powered on.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/pyra/roccatpyra<minor>/settings
+Date: August 2010
+Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
+Description: When read, this file returns the settings stored in the mouse.
+ The size of the data is 3 bytes and holds information on the
+ startup_profile.
+ When written, this file lets write settings back to the mouse.
+ The data has to be 3 bytes long. The mouse will reject invalid
+ data.
+Users: http://roccat.sourceforge.net
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-wiimote b/Documentation/ABI/testing/sysfs-driver-hid-wiimote
new file mode 100644
index 00000000000..3d98009f447
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-wiimote
@@ -0,0 +1,22 @@
+What: /sys/bus/hid/drivers/wiimote/<dev>/led1
+What: /sys/bus/hid/drivers/wiimote/<dev>/led2
+What: /sys/bus/hid/drivers/wiimote/<dev>/led3
+What: /sys/bus/hid/drivers/wiimote/<dev>/led4
+Date: July 2011
+KernelVersion: 3.1
+Contact: David Herrmann <dh.herrmann@googlemail.com>
+Description: Make it possible to set/get current led state. Reading from it
+ returns 0 if led is off and 1 if it is on. Writing 0 to it
+ disables the led, writing 1 enables it.
+
+What: /sys/bus/hid/drivers/wiimote/<dev>/extension
+Date: August 2011
+KernelVersion: 3.2
+Contact: David Herrmann <dh.herrmann@googlemail.com>
+Description: This file contains the currently connected and initialized
+ extensions. It can be one of: none, motionp, nunchuck, classic,
+ motionp+nunchuck, motionp+classic
+ motionp is the official Nintendo Motion+ extension, nunchuck is
+ the official Nintendo Nunchuck extension and classic is the
+ Nintendo Classic Controller extension. The motionp extension can
+ be combined with the other two.
diff --git a/Documentation/ABI/testing/sysfs-driver-samsung-laptop b/Documentation/ABI/testing/sysfs-driver-samsung-laptop
new file mode 100644
index 00000000000..0a810231aad
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-samsung-laptop
@@ -0,0 +1,19 @@
+What: /sys/devices/platform/samsung/performance_level
+Date: January 1, 2010
+KernelVersion: 2.6.33
+Contact: Greg Kroah-Hartman <gregkh@suse.de>
+Description: Some Samsung laptops have different "performance levels"
+ that are can be modified by a function key, and by this
+ sysfs file. These values don't always make a whole lot
+ of sense, but some users like to modify them to keep
+ their fans quiet at all costs. Reading from this file
+ will show the current performance level. Writing to the
+ file can change this value.
+ Valid options:
+ "silent"
+ "normal"
+ "overclock"
+ Note that not all laptops support all of these options.
+ Specifically, not all support the "overclock" option,
+ and it's still unknown if this value even changes
+ anything, other than making the user feel a bit better.
diff --git a/Documentation/ABI/testing/sysfs-driver-wacom b/Documentation/ABI/testing/sysfs-driver-wacom
new file mode 100644
index 00000000000..0130d6683c1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-wacom
@@ -0,0 +1,73 @@
+What: /sys/class/hidraw/hidraw*/device/speed
+Date: April 2010
+Kernel Version: 2.6.35
+Contact: linux-bluetooth@vger.kernel.org
+Description:
+ The /sys/class/hidraw/hidraw*/device/speed file controls
+ reporting speed of Wacom bluetooth tablet. Reading from
+ this file returns 1 if tablet reports in high speed mode
+ or 0 otherwise. Writing to this file one of these values
+ switches reporting speed.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/led
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Attribute group for control of the status LEDs and the OLEDs.
+ This attribute group is only available for Intuos 4 M, L,
+ and XL (with LEDs and OLEDs) and Cintiq 21UX2 and Cintiq 24HD
+ (LEDs only). Therefore its presence implicitly signifies the
+ presence of said LEDs and OLEDs on the tablet device.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status0_luminance
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets the status LED luminance (1..127)
+ when the stylus does not touch the tablet surface, and no
+ button is pressed on the stylus. This luminance level is
+ normally lower than the level when a button is pressed.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status1_luminance
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets the status LED luminance (1..127)
+ when the stylus touches the tablet surface, or any button is
+ pressed on the stylus.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status_led0_select
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets which one of the four (for Intuos 4)
+ or of the right four (for Cintiq 21UX2 and Cintiq 24HD) status
+ LEDs is active (0..3). The other three LEDs on the same side are
+ always inactive.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status_led1_select
+Date: September 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets which one of the left four (for Cintiq 21UX2
+ and Cintiq 24HD) status LEDs is active (0..3). The other three LEDs on
+ the left are always inactive.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/buttons_luminance
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ Writing to this file sets the overall luminance level (0..15)
+ of all eight button OLED displays.
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/button<n>_rawimg
+Date: August 2011
+Contact: linux-input@vger.kernel.org
+Description:
+ When writing a 1024 byte raw image in Wacom Intuos 4
+ interleaving format to the file, the image shows up on Button N
+ of the device. The image is a 64x32 pixel 4-bit gray image. The
+ 1024 byte binary is split up into 16x 64 byte chunks. Each 64
+ byte chunk encodes the image data for two consecutive lines on
+ the display. The low nibble of each byte contains the first
+ line, and the high nibble contains the second line.
diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi
new file mode 100644
index 00000000000..4f9ba3c2fca
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-acpi
@@ -0,0 +1,150 @@
+What: /sys/firmware/acpi/interrupts/
+Date: February 2008
+Contact: Len Brown <lenb@kernel.org>
+Description:
+ All ACPI interrupts are handled via a single IRQ,
+ the System Control Interrupt (SCI), which appears
+ as "acpi" in /proc/interrupts.
+
+ However, one of the main functions of ACPI is to make
+ the platform understand random hardware without
+ special driver support. So while the SCI handles a few
+ well known (fixed feature) interrupts sources, such
+ as the power button, it can also handle a variable
+ number of a "General Purpose Events" (GPE).
+
+ A GPE vectors to a specified handler in AML, which
+ can do a anything the BIOS writer wants from
+ OS context. GPE 0x12, for example, would vector
+ to a level or edge handler called _L12 or _E12.
+ The handler may do its business and return.
+ Or the handler may send send a Notify event
+ to a Linux device driver registered on an ACPI device,
+ such as a battery, or a processor.
+
+ To figure out where all the SCI's are coming from,
+ /sys/firmware/acpi/interrupts contains a file listing
+ every possible source, and the count of how many
+ times it has triggered.
+
+ $ cd /sys/firmware/acpi/interrupts
+ $ grep . *
+ error: 0
+ ff_gbl_lock: 0 enable
+ ff_pmtimer: 0 invalid
+ ff_pwr_btn: 0 enable
+ ff_rt_clk: 2 disable
+ ff_slp_btn: 0 invalid
+ gpe00: 0 invalid
+ gpe01: 0 enable
+ gpe02: 108 enable
+ gpe03: 0 invalid
+ gpe04: 0 invalid
+ gpe05: 0 invalid
+ gpe06: 0 enable
+ gpe07: 0 enable
+ gpe08: 0 invalid
+ gpe09: 0 invalid
+ gpe0A: 0 invalid
+ gpe0B: 0 invalid
+ gpe0C: 0 invalid
+ gpe0D: 0 invalid
+ gpe0E: 0 invalid
+ gpe0F: 0 invalid
+ gpe10: 0 invalid
+ gpe11: 0 invalid
+ gpe12: 0 invalid
+ gpe13: 0 invalid
+ gpe14: 0 invalid
+ gpe15: 0 invalid
+ gpe16: 0 invalid
+ gpe17: 1084 enable
+ gpe18: 0 enable
+ gpe19: 0 invalid
+ gpe1A: 0 invalid
+ gpe1B: 0 invalid
+ gpe1C: 0 invalid
+ gpe1D: 0 invalid
+ gpe1E: 0 invalid
+ gpe1F: 0 invalid
+ gpe_all: 1192
+ sci: 1194
+ sci_not: 0
+
+ sci - The number of times the ACPI SCI
+ has been called and claimed an interrupt.
+
+ sci_not - The number of times the ACPI SCI
+ has been called and NOT claimed an interrupt.
+
+ gpe_all - count of SCI caused by GPEs.
+
+ gpeXX - count for individual GPE source
+
+ ff_gbl_lock - Global Lock
+
+ ff_pmtimer - PM Timer
+
+ ff_pwr_btn - Power Button
+
+ ff_rt_clk - Real Time Clock
+
+ ff_slp_btn - Sleep Button
+
+ error - an interrupt that can't be accounted for above.
+
+ invalid: it's either a GPE or a Fixed Event that
+ doesn't have an event handler.
+
+ disable: the GPE/Fixed Event is valid but disabled.
+
+ enable: the GPE/Fixed Event is valid and enabled.
+
+ Root has permission to clear any of these counters. Eg.
+ # echo 0 > gpe11
+
+ All counters can be cleared by clearing the total "sci":
+ # echo 0 > sci
+
+ None of these counters has an effect on the function
+ of the system, they are simply statistics.
+
+ Besides this, user can also write specific strings to these files
+ to enable/disable/clear ACPI interrupts in user space, which can be
+ used to debug some ACPI interrupt storm issues.
+
+ Note that only writting to VALID GPE/Fixed Event is allowed,
+ i.e. user can only change the status of runtime GPE and
+ Fixed Event with event handler installed.
+
+ Let's take power button fixed event for example, please kill acpid
+ and other user space applications so that the machine won't shutdown
+ when pressing the power button.
+ # cat ff_pwr_btn
+ 0 enabled
+ # press the power button for 3 times;
+ # cat ff_pwr_btn
+ 3 enabled
+ # echo disable > ff_pwr_btn
+ # cat ff_pwr_btn
+ 3 disabled
+ # press the power button for 3 times;
+ # cat ff_pwr_btn
+ 3 disabled
+ # echo enable > ff_pwr_btn
+ # cat ff_pwr_btn
+ 4 enabled
+ /*
+ * this is because the status bit is set even if the enable bit is cleared,
+ * and it triggers an ACPI fixed event when the enable bit is set again
+ */
+ # press the power button for 3 times;
+ # cat ff_pwr_btn
+ 7 enabled
+ # echo disable > ff_pwr_btn
+ # press the power button for 3 times;
+ # echo clear > ff_pwr_btn /* clear the status bit */
+ # echo disable > ff_pwr_btn
+ # cat ff_pwr_btn
+ 7 enabled
+
diff --git a/Documentation/ABI/testing/sysfs-firmware-dmi b/Documentation/ABI/testing/sysfs-firmware-dmi
new file mode 100644
index 00000000000..c78f9ab01e5
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-dmi
@@ -0,0 +1,110 @@
+What: /sys/firmware/dmi/
+Date: February 2011
+Contact: Mike Waychison <mikew@google.com>
+Description:
+ Many machines' firmware (x86 and ia64) export DMI /
+ SMBIOS tables to the operating system. Getting at this
+ information is often valuable to userland, especially in
+ cases where there are OEM extensions used.
+
+ The kernel itself does not rely on the majority of the
+ information in these tables being correct. It equally
+ cannot ensure that the data as exported to userland is
+ without error either.
+
+ DMI is structured as a large table of entries, where
+ each entry has a common header indicating the type and
+ length of the entry, as well as a firmware-provided
+ 'handle' that is supposed to be unique amongst all
+ entries.
+
+ Some entries are required by the specification, but many
+ others are optional. In general though, users should
+ never expect to find a specific entry type on their
+ system unless they know for certain what their firmware
+ is doing. Machine to machine experiences will vary.
+
+ Multiple entries of the same type are allowed. In order
+ to handle these duplicate entry types, each entry is
+ assigned by the operating system an 'instance', which is
+ derived from an entry type's ordinal position. That is
+ to say, if there are 'N' multiple entries with the same type
+ 'T' in the DMI tables (adjacent or spread apart, it
+ doesn't matter), they will be represented in sysfs as
+ entries "T-0" through "T-(N-1)":
+
+ Example entry directories:
+
+ /sys/firmware/dmi/entries/17-0
+ /sys/firmware/dmi/entries/17-1
+ /sys/firmware/dmi/entries/17-2
+ /sys/firmware/dmi/entries/17-3
+ ...
+
+ Instance numbers are used in lieu of the firmware
+ assigned entry handles as the kernel itself makes no
+ guarantees that handles as exported are unique, and
+ there are likely firmware images that get this wrong in
+ the wild.
+
+ Each DMI entry in sysfs has the common header values
+ exported as attributes:
+
+ handle : The 16bit 'handle' that is assigned to this
+ entry by the firmware. This handle may be
+ referred to by other entries.
+ length : The length of the entry, as presented in the
+ entry itself. Note that this is _not the
+ total count of bytes associated with the
+ entry_. This value represents the length of
+ the "formatted" portion of the entry. This
+ "formatted" region is sometimes followed by
+ the "unformatted" region composed of nul
+ terminated strings, with termination signalled
+ by a two nul characters in series.
+ raw : The raw bytes of the entry. This includes the
+ "formatted" portion of the entry, the
+ "unformatted" strings portion of the entry,
+ and the two terminating nul characters.
+ type : The type of the entry. This value is the same
+ as found in the directory name. It indicates
+ how the rest of the entry should be interpreted.
+ instance: The instance ordinal of the entry for the
+ given type. This value is the same as found
+ in the parent directory name.
+ position: The ordinal position (zero-based) of the entry
+ within the entirety of the DMI entry table.
+
+ === Entry Specialization ===
+
+ Some entry types may have other information available in
+ sysfs. Not all types are specialized.
+
+ --- Type 15 - System Event Log ---
+
+ This entry allows the firmware to export a log of
+ events the system has taken. This information is
+ typically backed by nvram, but the implementation
+ details are abstracted by this table. This entry's data
+ is exported in the directory:
+
+ /sys/firmware/dmi/entries/15-0/system_event_log
+
+ and has the following attributes (documented in the
+ SMBIOS / DMI specification under "System Event Log (Type 15)":
+
+ area_length
+ header_start_offset
+ data_start_offset
+ access_method
+ status
+ change_token
+ access_method_address
+ header_format
+ per_log_type_descriptor_length
+ type_descriptors_supported_count
+
+ As well, the kernel exports the binary attribute:
+
+ raw_event_log : The raw binary bits of the event log
+ as described by the DMI entry.
diff --git a/Documentation/ABI/testing/sysfs-firmware-gsmi b/Documentation/ABI/testing/sysfs-firmware-gsmi
new file mode 100644
index 00000000000..0faa0aaf4b6
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-gsmi
@@ -0,0 +1,58 @@
+What: /sys/firmware/gsmi
+Date: March 2011
+Contact: Mike Waychison <mikew@google.com>
+Description:
+ Some servers used internally at Google have firmware
+ that provides callback functionality via explicit SMI
+ triggers. Some of the callbacks are similar to those
+ provided by the EFI runtime services page, but due to
+ historical reasons this different entry-point has been
+ used.
+
+ The gsmi driver implements the kernel's abstraction for
+ these firmware callbacks. Currently, this functionality
+ is limited to handling the system event log and getting
+ access to EFI-style variables stored in nvram.
+
+ Layout:
+
+ /sys/firmware/gsmi/vars:
+
+ This directory has the same layout (and
+ underlying implementation as /sys/firmware/efi/vars.
+ See Documentation/ABI/*/sysfs-firmware-efi-vars
+ for more information on how to interact with
+ this structure.
+
+ /sys/firmware/gsmi/append_to_eventlog - write-only:
+
+ This file takes a binary blob and passes it onto
+ the firmware to be timestamped and appended to
+ the system eventlog. The binary format is
+ interpreted by the firmware and may change from
+ platform to platform. The only kernel-enforced
+ requirement is that the blob be prefixed with a
+ 32bit host-endian type used as part of the
+ firmware call.
+
+ /sys/firmware/gsmi/clear_config - write-only:
+
+ Writing any value to this file will cause the
+ entire firmware configuration to be reset to
+ "factory defaults". Callers should assume that
+ a reboot is required for the configuration to be
+ cleared.
+
+ /sys/firmware/gsmi/clear_eventlog - write-only:
+
+ This file is used to clear out a portion/the
+ whole of the system event log. Values written
+ should be values between 1 and 100 inclusive (in
+ ASCII) representing the fraction of the log to
+ clear. Not all platforms support fractional
+ clearing though, and this writes to this file
+ will error out if the firmware doesn't like your
+ submitted fraction.
+
+ Callers should assume that a reboot is needed
+ for this operation to complete.
diff --git a/Documentation/ABI/testing/sysfs-firmware-log b/Documentation/ABI/testing/sysfs-firmware-log
new file mode 100644
index 00000000000..9b58e7c5365
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-log
@@ -0,0 +1,7 @@
+What: /sys/firmware/log
+Date: February 2011
+Contact: Mike Waychison <mikew@google.com>
+Description:
+ The /sys/firmware/log is a binary file that represents a
+ read-only copy of the firmware's log if one is
+ available.
diff --git a/Documentation/ABI/testing/sysfs-firmware-memmap b/Documentation/ABI/testing/sysfs-firmware-memmap
new file mode 100644
index 00000000000..eca0d65087d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-memmap
@@ -0,0 +1,71 @@
+What: /sys/firmware/memmap/
+Date: June 2008
+Contact: Bernhard Walle <bernhard.walle@gmx.de>
+Description:
+ On all platforms, the firmware provides a memory map which the
+ kernel reads. The resources from that memory map are registered
+ in the kernel resource tree and exposed to userspace via
+ /proc/iomem (together with other resources).
+
+ However, on most architectures that firmware-provided memory
+ map is modified afterwards by the kernel itself, either because
+ the kernel merges that memory map with other information or
+ just because the user overwrites that memory map via command
+ line.
+
+ kexec needs the raw firmware-provided memory map to setup the
+ parameter segment of the kernel that should be booted with
+ kexec. Also, the raw memory map is useful for debugging. For
+ that reason, /sys/firmware/memmap is an interface that provides
+ the raw memory map to userspace.
+
+ The structure is as follows: Under /sys/firmware/memmap there
+ are subdirectories with the number of the entry as their name:
+
+ /sys/firmware/memmap/0
+ /sys/firmware/memmap/1
+ /sys/firmware/memmap/2
+ /sys/firmware/memmap/3
+ ...
+
+ The maximum depends on the number of memory map entries provided
+ by the firmware. The order is just the order that the firmware
+ provides.
+
+ Each directory contains three files:
+
+ start : The start address (as hexadecimal number with the
+ '0x' prefix).
+ end : The end address, inclusive (regardless whether the
+ firmware provides inclusive or exclusive ranges).
+ type : Type of the entry as string. See below for a list of
+ valid types.
+
+ So, for example:
+
+ /sys/firmware/memmap/0/start
+ /sys/firmware/memmap/0/end
+ /sys/firmware/memmap/0/type
+ /sys/firmware/memmap/1/start
+ ...
+
+ Currently following types exist:
+
+ - System RAM
+ - ACPI Tables
+ - ACPI Non-volatile Storage
+ - reserved
+
+ Following shell snippet can be used to display that memory
+ map in a human-readable format:
+
+ -------------------- 8< ----------------------------------------
+ #!/bin/bash
+ cd /sys/firmware/memmap
+ for dir in * ; do
+ start=$(cat $dir/start)
+ end=$(cat $dir/end)
+ type=$(cat $dir/type)
+ printf "%016x-%016x (%s)\n" $start $[ $end +1] "$type"
+ done
+ -------------------- >8 ----------------------------------------
diff --git a/Documentation/ABI/testing/sysfs-firmware-sfi b/Documentation/ABI/testing/sysfs-firmware-sfi
new file mode 100644
index 00000000000..4be7d44aeac
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-sfi
@@ -0,0 +1,15 @@
+What: /sys/firmware/sfi/tables/
+Date: May 2010
+Contact: Len Brown <lenb@kernel.org>
+Description:
+ SFI defines a number of small static memory tables
+ so the kernel can get platform information from firmware.
+
+ The tables are defined in the latest SFI specification:
+ http://simplefirmware.org/documentation
+
+ While the tables are used by the kernel, user-space
+ can observe them this way:
+
+ # cd /sys/firmware/sfi/tables
+ # cat $TABLENAME > $TABLENAME.bin
diff --git a/Documentation/ABI/testing/sysfs-firmware-sgi_uv b/Documentation/ABI/testing/sysfs-firmware-sgi_uv
new file mode 100644
index 00000000000..4573fd4b787
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-sgi_uv
@@ -0,0 +1,27 @@
+What: /sys/firmware/sgi_uv/
+Date: August 2008
+Contact: Russ Anderson <rja@sgi.com>
+Description:
+ The /sys/firmware/sgi_uv directory contains information
+ about the SGI UV platform.
+
+ Under that directory are a number of files:
+
+ partition_id
+ coherence_id
+
+ The partition_id entry contains the partition id.
+ SGI UV systems can be partitioned into multiple physical
+ machines, which each partition running a unique copy
+ of the operating system. Each partition will have a unique
+ partition id. To display the partition id, use the command:
+
+ cat /sys/firmware/sgi_uv/partition_id
+
+ The coherence_id entry contains the coherence id.
+ A partitioned SGI UV system can have one or more coherence
+ domain. The coherence id indicates which coherence domain
+ this partition is in. To display the coherence id, use the
+ command:
+
+ cat /sys/firmware/sgi_uv/coherence_id
diff --git a/Documentation/ABI/testing/sysfs-fs-ext4 b/Documentation/ABI/testing/sysfs-fs-ext4
new file mode 100644
index 00000000000..f22ac0872ae
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-fs-ext4
@@ -0,0 +1,98 @@
+What: /sys/fs/ext4/<disk>/mb_stats
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ Controls whether the multiblock allocator should
+ collect statistics, which are shown during the unmount.
+ 1 means to collect statistics, 0 means not to collect
+ statistics
+
+What: /sys/fs/ext4/<disk>/mb_group_prealloc
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ The multiblock allocator will round up allocation
+ requests to a multiple of this tuning parameter if the
+ stripe size is not set in the ext4 superblock
+
+What: /sys/fs/ext4/<disk>/mb_max_to_scan
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ The maximum number of extents the multiblock allocator
+ will search to find the best extent
+
+What: /sys/fs/ext4/<disk>/mb_min_to_scan
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ The minimum number of extents the multiblock allocator
+ will search to find the best extent
+
+What: /sys/fs/ext4/<disk>/mb_order2_req
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ Tuning parameter which controls the minimum size for
+ requests (as a power of 2) where the buddy cache is
+ used
+
+What: /sys/fs/ext4/<disk>/mb_stream_req
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ Files which have fewer blocks than this tunable
+ parameter will have their blocks allocated out of a
+ block group specific preallocation pool, so that small
+ files are packed closely together. Each large file
+ will have its blocks allocated out of its own unique
+ preallocation pool.
+
+What: /sys/fs/ext4/<disk>/inode_readahead_blks
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ Tuning parameter which controls the maximum number of
+ inode table blocks that ext4's inode table readahead
+ algorithm will pre-read into the buffer cache
+
+What: /sys/fs/ext4/<disk>/delayed_allocation_blocks
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ This file is read-only and shows the number of blocks
+ that are dirty in the page cache, but which do not
+ have their location in the filesystem allocated yet.
+
+What: /sys/fs/ext4/<disk>/lifetime_write_kbytes
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ This file is read-only and shows the number of kilobytes
+ of data that have been written to this filesystem since it was
+ created.
+
+What: /sys/fs/ext4/<disk>/session_write_kbytes
+Date: March 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ This file is read-only and shows the number of
+ kilobytes of data that have been written to this
+ filesystem since it was mounted.
+
+What: /sys/fs/ext4/<disk>/inode_goal
+Date: June 2008
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ Tuning parameter which (if non-zero) controls the goal
+ inode used by the inode allocator in preference to
+ all other allocation heuristics. This is intended for
+ debugging use only, and should be 0 on production
+ systems.
+
+What: /sys/fs/ext4/<disk>/max_writeback_mb_bump
+Date: September 2009
+Contact: "Theodore Ts'o" <tytso@mit.edu>
+Description:
+ The maximum number of megabytes the writeback code will
+ try to write out before move on to another inode.
diff --git a/Documentation/ABI/testing/sysfs-gpio b/Documentation/ABI/testing/sysfs-gpio
new file mode 100644
index 00000000000..80f4c94c7be
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-gpio
@@ -0,0 +1,27 @@
+What: /sys/class/gpio/
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Brownell <dbrownell@users.sourceforge.net>
+Description:
+
+ As a Kconfig option, individual GPIO signals may be accessed from
+ userspace. GPIOs are only made available to userspace by an explicit
+ "export" operation. If a given GPIO is not claimed for use by
+ kernel code, it may be exported by userspace (and unexported later).
+ Kernel code may export it for complete or partial access.
+
+ GPIOs are identified as they are inside the kernel, using integers in
+ the range 0..INT_MAX. See Documentation/gpio.txt for more information.
+
+ /sys/class/gpio
+ /export ... asks the kernel to export a GPIO to userspace
+ /unexport ... to return a GPIO to the kernel
+ /gpioN ... for each exported GPIO #N
+ /value ... always readable, writes fail for input GPIOs
+ /direction ... r/w as: in, out (default low); write: high, low
+ /edge ... r/w as: none, falling, rising, both
+ /gpiochipN ... for each gpiochip; #N is its first GPIO
+ /base ... (r/o) same as N
+ /label ... (r/o) descriptive, not necessarily unique
+ /ngpio ... (r/o) number of GPIOs; numbered N to N + (ngpio - 1)
+
diff --git a/Documentation/ABI/testing/sysfs-i2c-bmp085 b/Documentation/ABI/testing/sysfs-i2c-bmp085
new file mode 100644
index 00000000000..585962ad046
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-i2c-bmp085
@@ -0,0 +1,31 @@
+What: /sys/bus/i2c/devices/<busnum>-<devaddr>/pressure0_input
+Date: June 2010
+Contact: Christoph Mair <christoph.mair@gmail.com>
+Description: Start a pressure measurement and read the result. Values
+ represent the ambient air pressure in pascal (0.01 millibar).
+
+ Reading: returns the current air pressure.
+
+
+What: /sys/bus/i2c/devices/<busnum>-<devaddr>/temp0_input
+Date: June 2010
+Contact: Christoph Mair <christoph.mair@gmail.com>
+Description: Measure the ambient temperature. The returned value represents
+ the ambient temperature in units of 0.1 degree celsius.
+
+ Reading: returns the current temperature.
+
+
+What: /sys/bus/i2c/devices/<busnum>-<devaddr>/oversampling
+Date: June 2010
+Contact: Christoph Mair <christoph.mair@gmail.com>
+Description: Tell the bmp085 to use more samples to calculate a pressure
+ value. When writing to this file the chip will use 2^x samples
+ to calculate the next pressure value with x being the value
+ written. Using this feature will decrease RMS noise and
+ increase the measurement time.
+
+ Reading: returns the current oversampling setting.
+
+ Writing: sets a new oversampling setting.
+ Accepted values: 0..3.
diff --git a/Documentation/ABI/testing/sysfs-ibft b/Documentation/ABI/testing/sysfs-ibft
new file mode 100644
index 00000000000..c2b7d1154be
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-ibft
@@ -0,0 +1,23 @@
+What: /sys/firmware/ibft/initiator
+Date: November 2007
+Contact: Konrad Rzeszutek <ketuzsezr@darnok.org>
+Description: The /sys/firmware/ibft/initiator directory will contain
+ files that expose the iSCSI Boot Firmware Table initiator data.
+ Usually this contains the Initiator name.
+
+What: /sys/firmware/ibft/targetX
+Date: November 2007
+Contact: Konrad Rzeszutek <ketuzsezr@darnok.org>
+Description: The /sys/firmware/ibft/targetX directory will contain
+ files that expose the iSCSI Boot Firmware Table target data.
+ Usually this contains the target's IP address, boot LUN,
+ target name, and what NIC it is associated with. It can also
+ contain the CHAP name (and password), the reverse CHAP
+ name (and password)
+
+What: /sys/firmware/ibft/ethernetX
+Date: November 2007
+Contact: Konrad Rzeszutek <ketuzsezr@darnok.org>
+Description: The /sys/firmware/ibft/ethernetX directory will contain
+ files that expose the iSCSI Boot Firmware Table NIC data.
+ This can this can the IP address, MAC, and gateway of the NIC.
diff --git a/Documentation/ABI/testing/sysfs-kernel-fscaps b/Documentation/ABI/testing/sysfs-kernel-fscaps
new file mode 100644
index 00000000000..50a3033b5e1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-fscaps
@@ -0,0 +1,8 @@
+What: /sys/kernel/fscaps
+Date: February 2011
+KernelVersion: 2.6.38
+Contact: Ludwig Nussel <ludwig.nussel@suse.de>
+Description
+ Shows whether file system capabilities are honored
+ when executing a binary
+
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm b/Documentation/ABI/testing/sysfs-kernel-mm
new file mode 100644
index 00000000000..190d523ac15
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm
@@ -0,0 +1,6 @@
+What: /sys/kernel/mm
+Date: July 2008
+Contact: Nishanth Aravamudan <nacc@us.ibm.com>, VM maintainers
+Description:
+ /sys/kernel/mm/ should contain any and all VM
+ related information in /sys/kernel/.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-cleancache b/Documentation/ABI/testing/sysfs-kernel-mm-cleancache
new file mode 100644
index 00000000000..662ae646ea1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-cleancache
@@ -0,0 +1,11 @@
+What: /sys/kernel/mm/cleancache/
+Date: April 2011
+Contact: Dan Magenheimer <dan.magenheimer@oracle.com>
+Description:
+ /sys/kernel/mm/cleancache/ contains a number of files which
+ record a count of various cleancache operations
+ (sum across all filesystems):
+ succ_gets
+ failed_gets
+ puts
+ flushes
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-hugepages b/Documentation/ABI/testing/sysfs-kernel-mm-hugepages
new file mode 100644
index 00000000000..e21c00571cf
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-hugepages
@@ -0,0 +1,15 @@
+What: /sys/kernel/mm/hugepages/
+Date: June 2008
+Contact: Nishanth Aravamudan <nacc@us.ibm.com>, hugetlb maintainers
+Description:
+ /sys/kernel/mm/hugepages/ contains a number of subdirectories
+ of the form hugepages-<size>kB, where <size> is the page size
+ of the hugepages supported by the kernel/CPU combination.
+
+ Under these directories are a number of files:
+ nr_hugepages
+ nr_overcommit_hugepages
+ free_hugepages
+ surplus_hugepages
+ resv_hugepages
+ See Documentation/vm/hugetlbpage.txt for details.
diff --git a/Documentation/ABI/testing/sysfs-kernel-slab b/Documentation/ABI/testing/sysfs-kernel-slab
new file mode 100644
index 00000000000..91bd6ca5440
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-slab
@@ -0,0 +1,490 @@
+What: /sys/kernel/slab
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The /sys/kernel/slab directory contains a snapshot of the
+ internal state of the SLUB allocator for each cache. Certain
+ files may be modified to change the behavior of the cache (and
+ any cache it aliases, if any).
+Users: kernel memory tuning tools
+
+What: /sys/kernel/slab/cache/aliases
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The aliases file is read-only and specifies how many caches
+ have merged into this cache.
+
+What: /sys/kernel/slab/cache/align
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The align file is read-only and specifies the cache's object
+ alignment in bytes.
+
+What: /sys/kernel/slab/cache/alloc_calls
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_calls file is read-only and lists the kernel code
+ locations from which allocations for this cache were performed.
+ The alloc_calls file only contains information if debugging is
+ enabled for that cache (see Documentation/vm/slub.txt).
+
+What: /sys/kernel/slab/cache/alloc_fastpath
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_fastpath file shows how many objects have been
+ allocated using the fast path. It can be written to clear the
+ current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/alloc_from_partial
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_from_partial file shows how many times a cpu slab has
+ been full and it has been refilled by using a slab from the list
+ of partially used slabs. It can be written to clear the current
+ count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/alloc_refill
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_refill file shows how many times the per-cpu freelist
+ was empty but there were objects available as the result of
+ remote cpu frees. It can be written to clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/alloc_slab
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_slab file is shows how many times a new slab had to
+ be allocated from the page allocator. It can be written to
+ clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/alloc_slowpath
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_slowpath file shows how many objects have been
+ allocated using the slow path because of a refill or
+ allocation from a partial or new slab. It can be written to
+ clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/cache_dma
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The cache_dma file is read-only and specifies whether objects
+ are from ZONE_DMA.
+ Available when CONFIG_ZONE_DMA is enabled.
+
+What: /sys/kernel/slab/cache/cpu_slabs
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The cpu_slabs file is read-only and displays how many cpu slabs
+ are active and their NUMA locality.
+
+What: /sys/kernel/slab/cache/cpuslab_flush
+Date: April 2009
+KernelVersion: 2.6.31
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file cpuslab_flush shows how many times a cache's cpu slabs
+ have been flushed as the result of destroying or shrinking a
+ cache, a cpu going offline, or as the result of forcing an
+ allocation from a certain node. It can be written to clear the
+ current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/ctor
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The ctor file is read-only and specifies the cache's object
+ constructor function, which is invoked for each object when a
+ new slab is allocated.
+
+What: /sys/kernel/slab/cache/deactivate_empty
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The deactivate_empty file shows how many times an empty cpu slab
+ was deactivated. It can be written to clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/deactivate_full
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The deactivate_full file shows how many times a full cpu slab
+ was deactivated. It can be written to clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/deactivate_remote_frees
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The deactivate_remote_frees file shows how many times a cpu slab
+ has been deactivated and contained free objects that were freed
+ remotely. It can be written to clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/deactivate_to_head
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The deactivate_to_head file shows how many times a partial cpu
+ slab was deactivated and added to the head of its node's partial
+ list. It can be written to clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/deactivate_to_tail
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The deactivate_to_tail file shows how many times a partial cpu
+ slab was deactivated and added to the tail of its node's partial
+ list. It can be written to clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/destroy_by_rcu
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The destroy_by_rcu file is read-only and specifies whether
+ slabs (not objects) are freed by rcu.
+
+What: /sys/kernel/slab/cache/free_add_partial
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_add_partial file shows how many times an object has
+ been freed in a full slab so that it had to added to its node's
+ partial list. It can be written to clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_calls
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_calls file is read-only and lists the locations of
+ object frees if slab debugging is enabled (see
+ Documentation/vm/slub.txt).
+
+What: /sys/kernel/slab/cache/free_fastpath
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_fastpath file shows how many objects have been freed
+ using the fast path because it was an object from the cpu slab.
+ It can be written to clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_frozen
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_frozen file shows how many objects have been freed to
+ a frozen slab (i.e. a remote cpu slab). It can be written to
+ clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_remove_partial
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_remove_partial file shows how many times an object has
+ been freed to a now-empty slab so that it had to be removed from
+ its node's partial list. It can be written to clear the current
+ count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_slab
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_slab file shows how many times an empty slab has been
+ freed back to the page allocator. It can be written to clear
+ the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_slowpath
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_slowpath file shows how many objects have been freed
+ using the slow path (i.e. to a full or partial slab). It can
+ be written to clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/hwcache_align
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The hwcache_align file is read-only and specifies whether
+ objects are aligned on cachelines.
+
+What: /sys/kernel/slab/cache/min_partial
+Date: February 2009
+KernelVersion: 2.6.30
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ David Rientjes <rientjes@google.com>
+Description:
+ The min_partial file specifies how many empty slabs shall
+ remain on a node's partial list to avoid the overhead of
+ allocating new slabs. Such slabs may be reclaimed by utilizing
+ the shrink file.
+
+What: /sys/kernel/slab/cache/object_size
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The object_size file is read-only and specifies the cache's
+ object size.
+
+What: /sys/kernel/slab/cache/objects
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The objects file is read-only and displays how many objects are
+ active and from which nodes they are from.
+
+What: /sys/kernel/slab/cache/objects_partial
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The objects_partial file is read-only and displays how many
+ objects are on partial slabs and from which nodes they are
+ from.
+
+What: /sys/kernel/slab/cache/objs_per_slab
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file objs_per_slab is read-only and specifies how many
+ objects may be allocated from a single slab of the order
+ specified in /sys/kernel/slab/cache/order.
+
+What: /sys/kernel/slab/cache/order
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The order file specifies the page order at which new slabs are
+ allocated. It is writable and can be changed to increase the
+ number of objects per slab. If a slab cannot be allocated
+ because of fragmentation, SLUB will retry with the minimum order
+ possible depending on its characteristics.
+ When debug_guardpage_minorder=N (N > 0) parameter is specified
+ (see Documentation/kernel-parameters.txt), the minimum possible
+ order is used and this sysfs entry can not be used to change
+ the order at run time.
+
+What: /sys/kernel/slab/cache/order_fallback
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The order_fallback file shows how many times an allocation of a
+ new slab has not been possible at the cache's order and instead
+ fallen back to its minimum possible order. It can be written to
+ clear the current count.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/partial
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The partial file is read-only and displays how long many
+ partial slabs there are and how long each node's list is.
+
+What: /sys/kernel/slab/cache/poison
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The poison file specifies whether objects should be poisoned
+ when a new slab is allocated.
+
+What: /sys/kernel/slab/cache/reclaim_account
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The reclaim_account file specifies whether the cache's objects
+ are reclaimable (and grouped by their mobility).
+
+What: /sys/kernel/slab/cache/red_zone
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The red_zone file specifies whether the cache's objects are red
+ zoned.
+
+What: /sys/kernel/slab/cache/remote_node_defrag_ratio
+Date: January 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file remote_node_defrag_ratio specifies the percentage of
+ times SLUB will attempt to refill the cpu slab with a partial
+ slab from a remote node as opposed to allocating a new slab on
+ the local node. This reduces the amount of wasted memory over
+ the entire system but can be expensive.
+ Available when CONFIG_NUMA is enabled.
+
+What: /sys/kernel/slab/cache/sanity_checks
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The sanity_checks file specifies whether expensive checks
+ should be performed on free and, at minimum, enables double free
+ checks. Caches that enable sanity_checks cannot be merged with
+ caches that do not.
+
+What: /sys/kernel/slab/cache/shrink
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The shrink file is written when memory should be reclaimed from
+ a cache. Empty partial slabs are freed and the partial list is
+ sorted so the slabs with the fewest available objects are used
+ first.
+
+What: /sys/kernel/slab/cache/slab_size
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The slab_size file is read-only and specifies the object size
+ with metadata (debugging information and alignment) in bytes.
+
+What: /sys/kernel/slab/cache/slabs
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The slabs file is read-only and displays how long many slabs
+ there are (both cpu and partial) and from which nodes they are
+ from.
+
+What: /sys/kernel/slab/cache/store_user
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The store_user file specifies whether the location of
+ allocation or free should be tracked for a cache.
+
+What: /sys/kernel/slab/cache/total_objects
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The total_objects file is read-only and displays how many total
+ objects a cache has and from which nodes they are from.
+
+What: /sys/kernel/slab/cache/trace
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The trace file specifies whether object allocations and frees
+ should be traced.
+
+What: /sys/kernel/slab/cache/validate
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ Writing to the validate file causes SLUB to traverse all of its
+ cache's objects and check the validity of metadata.
diff --git a/Documentation/ABI/testing/sysfs-kernel-uids b/Documentation/ABI/testing/sysfs-kernel-uids
new file mode 100644
index 00000000000..28f14695a85
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-uids
@@ -0,0 +1,14 @@
+What: /sys/kernel/uids/<uid>/cpu_shares
+Date: December 2007
+Contact: Dhaval Giani <dhaval@linux.vnet.ibm.com>
+ Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
+Description:
+ The /sys/kernel/uids/<uid>/cpu_shares tunable is used
+ to set the cpu bandwidth a user is allowed. This is a
+ propotional value. What that means is that if there
+ are two users logged in, each with an equal number of
+ shares, then they will get equal CPU bandwidth. Another
+ example would be, if User A has shares = 1024 and user
+ B has shares = 2048, User B will get twice the CPU
+ bandwidth user A will. For more details refer
+ Documentation/scheduler/sched-design-CFS.txt
diff --git a/Documentation/ABI/testing/sysfs-memory-page-offline b/Documentation/ABI/testing/sysfs-memory-page-offline
new file mode 100644
index 00000000000..e14703f12fd
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-memory-page-offline
@@ -0,0 +1,44 @@
+What: /sys/devices/system/memory/soft_offline_page
+Date: Sep 2009
+KernelVersion: 2.6.33
+Contact: andi@firstfloor.org
+Description:
+ Soft-offline the memory page containing the physical address
+ written into this file. Input is a hex number specifying the
+ physical address of the page. The kernel will then attempt
+ to soft-offline it, by moving the contents elsewhere or
+ dropping it if possible. The kernel will then be placed
+ on the bad page list and never be reused.
+
+ The offlining is done in kernel specific granuality.
+ Normally it's the base page size of the kernel, but
+ this might change.
+
+ The page must be still accessible, not poisoned. The
+ kernel will never kill anything for this, but rather
+ fail the offline. Return value is the size of the
+ number, or a error when the offlining failed. Reading
+ the file is not allowed.
+
+What: /sys/devices/system/memory/hard_offline_page
+Date: Sep 2009
+KernelVersion: 2.6.33
+Contact: andi@firstfloor.org
+Description:
+ Hard-offline the memory page containing the physical
+ address written into this file. Input is a hex number
+ specifying the physical address of the page. The
+ kernel will then attempt to hard-offline the page, by
+ trying to drop the page or killing any owner or
+ triggering IO errors if needed. Note this may kill
+ any processes owning the page. The kernel will avoid
+ to access this page assuming it's poisoned by the
+ hardware.
+
+ The offlining is done in kernel specific granuality.
+ Normally it's the base page size of the kernel, but
+ this might change.
+
+ Return value is the size of the number, or a error when
+ the offlining failed.
+ Reading the file is not allowed.
diff --git a/Documentation/ABI/testing/sysfs-module b/Documentation/ABI/testing/sysfs-module
new file mode 100644
index 00000000000..47064c2b1f7
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-module
@@ -0,0 +1,51 @@
+What: /sys/module/pch_phub/drivers/.../pch_mac
+Date: August 2010
+KernelVersion: 2.6.35
+Contact: masa-korg@dsn.okisemi.com
+Description: Write/read GbE MAC address.
+
+What: /sys/module/pch_phub/drivers/.../pch_firmware
+Date: August 2010
+KernelVersion: 2.6.35
+Contact: masa-korg@dsn.okisemi.com
+Description: Write/read Option ROM data.
+
+
+What: /sys/module/ehci_hcd/drivers/.../uframe_periodic_max
+Date: July 2011
+KernelVersion: 3.1
+Contact: Kirill Smelkov <kirr@mns.spb.ru>
+Description: Maximum time allowed for periodic transfers per microframe (μs)
+
+ [ USB 2.0 sets maximum allowed time for periodic transfers per
+ microframe to be 80%, that is 100 microseconds out of 125
+ microseconds (full microframe).
+
+ However there are cases, when 80% max isochronous bandwidth is
+ too limiting. For example two video streams could require 110
+ microseconds of isochronous bandwidth per microframe to work
+ together. ]
+
+ Through this setting it is possible to raise the limit so that
+ the host controller would allow allocating more than 100
+ microseconds of periodic bandwidth per microframe.
+
+ Beware, non-standard modes are usually not thoroughly tested by
+ hardware designers, and the hardware can malfunction when this
+ setting differ from default 100.
+
+What: /sys/module/*/{coresize,initsize}
+Date: Jan 2012
+KernelVersion:»·3.3
+Contact: Kay Sievers <kay.sievers@vrfy.org>
+Description: Module size in bytes.
+
+What: /sys/module/*/taint
+Date: Jan 2012
+KernelVersion:»·3.3
+Contact: Kay Sievers <kay.sievers@vrfy.org>
+Description: Module taint flags:
+ P - proprietary module
+ O - out-of-tree module
+ F - force-loaded module
+ C - staging driver module
diff --git a/Documentation/ABI/testing/sysfs-ocfs2 b/Documentation/ABI/testing/sysfs-ocfs2
new file mode 100644
index 00000000000..b7cc516a8a8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-ocfs2
@@ -0,0 +1,89 @@
+What: /sys/fs/ocfs2/
+Date: April 2008
+Contact: ocfs2-devel@oss.oracle.com
+Description:
+ The /sys/fs/ocfs2 directory contains knobs used by the
+ ocfs2-tools to interact with the filesystem.
+
+What: /sys/fs/ocfs2/max_locking_protocol
+Date: April 2008
+Contact: ocfs2-devel@oss.oracle.com
+Description:
+ The /sys/fs/ocfs2/max_locking_protocol file displays version
+ of ocfs2 locking supported by the filesystem. This version
+ covers how ocfs2 uses distributed locking between cluster
+ nodes.
+
+ The protocol version has a major and minor number. Two
+ cluster nodes can interoperate if they have an identical
+ major number and an overlapping minor number - thus,
+ a node with version 1.10 can interoperate with a node
+ sporting version 1.8, as long as both use the 1.8 protocol.
+
+ Reading from this file returns a single line, the major
+ number and minor number joined by a period, eg "1.10".
+
+ This file is read-only. The value is compiled into the
+ driver.
+
+What: /sys/fs/ocfs2/loaded_cluster_plugins
+Date: April 2008
+Contact: ocfs2-devel@oss.oracle.com
+Description:
+ The /sys/fs/ocfs2/loaded_cluster_plugins file describes
+ the available plugins to support ocfs2 cluster operation.
+ A cluster plugin is required to use ocfs2 in a cluster.
+ There are currently two available plugins:
+
+ * 'o2cb' - The classic o2cb cluster stack that ocfs2 has
+ used since its inception.
+ * 'user' - A plugin supporting userspace cluster software
+ in conjunction with fs/dlm.
+
+ Reading from this file returns the names of all loaded
+ plugins, one per line.
+
+ This file is read-only. Its contents may change as
+ plugins are loaded or removed.
+
+What: /sys/fs/ocfs2/active_cluster_plugin
+Date: April 2008
+Contact: ocfs2-devel@oss.oracle.com
+Description:
+ The /sys/fs/ocfs2/active_cluster_plugin displays which
+ cluster plugin is currently in use by the filesystem.
+ The active plugin will appear in the loaded_cluster_plugins
+ file as well. Only one plugin can be used at a time.
+
+ Reading from this file returns the name of the active plugin
+ on a single line.
+
+ This file is read-only. Which plugin is active depends on
+ the cluster stack in use. The contents may change
+ when all filesystems are unmounted and the cluster stack
+ is changed.
+
+What: /sys/fs/ocfs2/cluster_stack
+Date: April 2008
+Contact: ocfs2-devel@oss.oracle.com
+Description:
+ The /sys/fs/ocfs2/cluster_stack file contains the name
+ of current ocfs2 cluster stack. This value is set by
+ userspace tools when bringing the cluster stack online.
+
+ Cluster stack names are 4 characters in length.
+
+ When the 'o2cb' cluster stack is used, the 'o2cb' cluster
+ plugin is active. All other cluster stacks use the 'user'
+ cluster plugin.
+
+ Reading from this file returns the name of the current
+ cluster stack on a single line.
+
+ Writing a new stack name to this file changes the current
+ cluster stack unless there are mounted ocfs2 filesystems.
+ If there are mounted filesystems, attempts to change the
+ stack return an error.
+
+Users:
+ ocfs2-tools <ocfs2-tools-devel@oss.oracle.com>
diff --git a/Documentation/ABI/testing/sysfs-platform-asus-laptop b/Documentation/ABI/testing/sysfs-platform-asus-laptop
new file mode 100644
index 00000000000..cd9d667c3da
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-asus-laptop
@@ -0,0 +1,66 @@
+What: /sys/devices/platform/asus_laptop/display
+Date: January 2007
+KernelVersion: 2.6.20
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ This file allows display switching. The value
+ is composed by 4 bits and defined as follow:
+ 4321
+ |||`- LCD
+ ||`-- CRT
+ |`--- TV
+ `---- DVI
+ Ex: - 0 (0000b) means no display
+ - 3 (0011b) CRT+LCD.
+
+What: /sys/devices/platform/asus_laptop/gps
+Date: January 2007
+KernelVersion: 2.6.20
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the gps device. 1 means on, 0 means off.
+Users: Lapsus
+
+What: /sys/devices/platform/asus_laptop/ledd
+Date: January 2007
+KernelVersion: 2.6.20
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Some models like the W1N have a LED display that can be
+ used to display several items of information.
+ To control the LED display, use the following :
+ echo 0x0T000DDD > /sys/devices/platform/asus_laptop/
+ where T control the 3 letters display, and DDD the 3 digits display.
+ The DDD table can be found in Documentation/laptops/asus-laptop.txt
+
+What: /sys/devices/platform/asus_laptop/bluetooth
+Date: January 2007
+KernelVersion: 2.6.20
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the bluetooth device. 1 means on, 0 means off.
+ This may control the led, the device or both.
+Users: Lapsus
+
+What: /sys/devices/platform/asus_laptop/wlan
+Date: January 2007
+KernelVersion: 2.6.20
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the wlan device. 1 means on, 0 means off.
+ This may control the led, the device or both.
+Users: Lapsus
+
+What: /sys/devices/platform/asus_laptop/wimax
+Date: October 2010
+KernelVersion: 2.6.37
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the wimax device. 1 means on, 0 means off.
+
+What: /sys/devices/platform/asus_laptop/wwan
+Date: October 2010
+KernelVersion: 2.6.37
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the wwan (3G) device. 1 means on, 0 means off.
diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi
new file mode 100644
index 00000000000..2e7df91620d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi
@@ -0,0 +1,31 @@
+What: /sys/devices/platform/<platform>/cpufv
+Date: Oct 2010
+KernelVersion: 2.6.37
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Change CPU clock configuration (write-only).
+ There are three available clock configuration:
+ * 0 -> Super Performance Mode
+ * 1 -> High Performance Mode
+ * 2 -> Power Saving Mode
+
+What: /sys/devices/platform/<platform>/camera
+Date: Jan 2010
+KernelVersion: 2.6.39
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the camera. 1 means on, 0 means off.
+
+What: /sys/devices/platform/<platform>/cardr
+Date: Jan 2010
+KernelVersion: 2.6.39
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the card reader. 1 means on, 0 means off.
+
+What: /sys/devices/platform/<platform>/touchpad
+Date: Jan 2010
+KernelVersion: 2.6.39
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the card touchpad. 1 means on, 0 means off.
diff --git a/Documentation/ABI/testing/sysfs-platform-at91 b/Documentation/ABI/testing/sysfs-platform-at91
new file mode 100644
index 00000000000..4cc6a865ae6
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-at91
@@ -0,0 +1,25 @@
+What: /sys/devices/platform/at91_can/net/<iface>/mb0_id
+Date: January 2011
+KernelVersion: 2.6.38
+Contact: Marc Kleine-Budde <kernel@pengutronix.de>
+Description:
+ Value representing the can_id of mailbox 0.
+
+ Default: 0x7ff (standard frame)
+
+ Due to a chip bug (errata 50.2.6.3 & 50.3.5.3 in
+ "AT91SAM9263 Preliminary 6249H-ATARM-27-Jul-09") the
+ contents of mailbox 0 may be send under certain
+ conditions (even if disabled or in rx mode).
+
+ The workaround in the errata suggests not to use the
+ mailbox and load it with an unused identifier.
+
+ In order to use an extended can_id add the
+ CAN_EFF_FLAG (0x80000000U) to the can_id. Example:
+
+ - standard id 0x7ff:
+ echo 0x7ff > /sys/class/net/can0/mb0_id
+
+ - extended id 0x1fffffff:
+ echo 0x9fffffff > /sys/class/net/can0/mb0_id
diff --git a/Documentation/ABI/testing/sysfs-platform-eeepc-laptop b/Documentation/ABI/testing/sysfs-platform-eeepc-laptop
new file mode 100644
index 00000000000..5b026c69587
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-eeepc-laptop
@@ -0,0 +1,50 @@
+What: /sys/devices/platform/eeepc/disp
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ This file allows display switching.
+ - 1 = LCD
+ - 2 = CRT
+ - 3 = LCD+CRT
+ If you run X11, you should use xrandr instead.
+
+What: /sys/devices/platform/eeepc/camera
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the camera. 1 means on, 0 means off.
+
+What: /sys/devices/platform/eeepc/cardr
+Date: May 2008
+KernelVersion: 2.6.26
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Control the card reader. 1 means on, 0 means off.
+
+What: /sys/devices/platform/eeepc/cpufv
+Date: Jun 2009
+KernelVersion: 2.6.31
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ Change CPU clock configuration.
+ On the Eee PC 1000H there are three available clock configuration:
+ * 0 -> Super Performance Mode
+ * 1 -> High Performance Mode
+ * 2 -> Power Saving Mode
+ On Eee PC 701 there is only 2 available clock configurations.
+ Available configuration are listed in available_cpufv file.
+ Reading this file will show the raw hexadecimal value which
+ is defined as follow:
+ | 8 bit | 8 bit |
+ | `---- Current mode
+ `------------ Availables modes
+ For example, 0x301 means: mode 1 selected, 3 available modes.
+
+What: /sys/devices/platform/eeepc/available_cpufv
+Date: Jun 2009
+KernelVersion: 2.6.31
+Contact: "Corentin Chary" <corentincj@iksaif.net>
+Description:
+ List available cpufv modes.
diff --git a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
new file mode 100644
index 00000000000..814b01354c4
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
@@ -0,0 +1,8 @@
+What: /sys/devices/platform/ideapad/camera_power
+Date: Dec 2010
+KernelVersion: 2.6.37
+Contact: "Ike Panhc <ike.pan@canonical.com>"
+Description:
+ Control the power of camera module. 1 means on, 0 means off.
+
+
diff --git a/Documentation/ABI/testing/sysfs-platform-kim b/Documentation/ABI/testing/sysfs-platform-kim
new file mode 100644
index 00000000000..c1653271872
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-kim
@@ -0,0 +1,48 @@
+What: /sys/devices/platform/kim/dev_name
+Date: January 2010
+KernelVersion: 2.6.38
+Contact: "Pavan Savoy" <pavan_savoy@ti.com>
+Description:
+ Name of the UART device at which the WL128x chip
+ is connected. example: "/dev/ttyS0".
+ The device name flows down to architecture specific board
+ initialization file from the SFI/ATAGS bootloader
+ firmware. The name exposed is read from the user-space
+ dameon and opens the device when install is requested.
+
+What: /sys/devices/platform/kim/baud_rate
+Date: January 2010
+KernelVersion: 2.6.38
+Contact: "Pavan Savoy" <pavan_savoy@ti.com>
+Description:
+ The maximum reliable baud-rate the host can support.
+ Different platforms tend to have different high-speed
+ UART configurations, so the baud-rate needs to be set
+ locally and also sent across to the WL128x via a HCI-VS
+ command. The entry is read and made use by the user-space
+ daemon when the ldisc install is requested.
+
+What: /sys/devices/platform/kim/flow_cntrl
+Date: January 2010
+KernelVersion: 2.6.38
+Contact: "Pavan Savoy" <pavan_savoy@ti.com>
+Description:
+ The WL128x makes use of flow control mechanism, and this
+ entry most often should be 1, the host's UART is required
+ to have the capability of flow-control, or else this
+ entry can be made use of for exceptions.
+
+What: /sys/devices/platform/kim/install
+Date: January 2010
+KernelVersion: 2.6.38
+Contact: "Pavan Savoy" <pavan_savoy@ti.com>
+Description:
+ When one of the protocols Bluetooth, FM or GPS wants to make
+ use of the shared UART transport, it registers to the shared
+ transport driver, which will signal the user-space for opening,
+ configuring baud and install line discipline via this sysfs
+ entry. This entry would be polled upon by the user-space
+ daemon managing the UART, and is notified about the change
+ by the sysfs_notify. The value would be '1' when UART needs
+ to be opened/ldisc installed, and would be '0' when UART
+ is no more required and needs to be closed.
diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power
new file mode 100644
index 00000000000..b464d12761b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-power
@@ -0,0 +1,174 @@
+What: /sys/power/
+Date: August 2006
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/power directory will contain files that will
+ provide a unified interface to the power management
+ subsystem.
+
+What: /sys/power/state
+Date: August 2006
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/power/state file controls the system power state.
+ Reading from this file returns what states are supported,
+ which is hard-coded to 'standby' (Power-On Suspend), 'mem'
+ (Suspend-to-RAM), and 'disk' (Suspend-to-Disk).
+
+ Writing to this file one of these strings causes the system to
+ transition into that state. Please see the file
+ Documentation/power/states.txt for a description of each of
+ these states.
+
+What: /sys/power/disk
+Date: September 2006
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/power/disk file controls the operating mode of the
+ suspend-to-disk mechanism. Reading from this file returns
+ the name of the method by which the system will be put to
+ sleep on the next suspend. There are four methods supported:
+ 'firmware' - means that the memory image will be saved to disk
+ by some firmware, in which case we also assume that the
+ firmware will handle the system suspend.
+ 'platform' - the memory image will be saved by the kernel and
+ the system will be put to sleep by the platform driver (e.g.
+ ACPI or other PM registers).
+ 'shutdown' - the memory image will be saved by the kernel and
+ the system will be powered off.
+ 'reboot' - the memory image will be saved by the kernel and
+ the system will be rebooted.
+
+ Additionally, /sys/power/disk can be used to turn on one of the
+ two testing modes of the suspend-to-disk mechanism: 'testproc'
+ or 'test'. If the suspend-to-disk mechanism is in the
+ 'testproc' mode, writing 'disk' to /sys/power/state will cause
+ the kernel to disable nonboot CPUs and freeze tasks, wait for 5
+ seconds, unfreeze tasks and enable nonboot CPUs. If it is in
+ the 'test' mode, writing 'disk' to /sys/power/state will cause
+ the kernel to disable nonboot CPUs and freeze tasks, shrink
+ memory, suspend devices, wait for 5 seconds, resume devices,
+ unfreeze tasks and enable nonboot CPUs. Then, we are able to
+ look in the log messages and work out, for example, which code
+ is being slow and which device drivers are misbehaving.
+
+ The suspend-to-disk method may be chosen by writing to this
+ file one of the accepted strings:
+
+ 'firmware'
+ 'platform'
+ 'shutdown'
+ 'reboot'
+ 'testproc'
+ 'test'
+
+ It will only change to 'firmware' or 'platform' if the system
+ supports that.
+
+What: /sys/power/image_size
+Date: August 2006
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/power/image_size file controls the size of the image
+ created by the suspend-to-disk mechanism. It can be written a
+ string representing a non-negative integer that will be used
+ as an upper limit of the image size, in bytes. The kernel's
+ suspend-to-disk code will do its best to ensure the image size
+ will not exceed this number. However, if it turns out to be
+ impossible, the kernel will try to suspend anyway using the
+ smallest image possible. In particular, if "0" is written to
+ this file, the suspend image will be as small as possible.
+
+ Reading from this file will display the current image size
+ limit, which is set to 500 MB by default.
+
+What: /sys/power/pm_trace
+Date: August 2006
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/power/pm_trace file controls the code which saves the
+ last PM event point in the RTC across reboots, so that you can
+ debug a machine that just hangs during suspend (or more
+ commonly, during resume). Namely, the RTC is only used to save
+ the last PM event point if this file contains '1'. Initially
+ it contains '0' which may be changed to '1' by writing a
+ string representing a nonzero integer into it.
+
+ To use this debugging feature you should attempt to suspend
+ the machine, then reboot it and run
+
+ dmesg -s 1000000 | grep 'hash matches'
+
+ If you do not get any matches (or they appear to be false
+ positives), it is possible that the last PM event point
+ referred to a device created by a loadable kernel module. In
+ this case cat /sys/power/pm_trace_dev_match (see below) after
+ your system is started up and the kernel modules are loaded.
+
+ CAUTION: Using it will cause your machine's real-time (CMOS)
+ clock to be set to a random invalid time after a resume.
+
+What; /sys/power/pm_trace_dev_match
+Date: October 2010
+Contact: James Hogan <james@albanarts.com>
+Description:
+ The /sys/power/pm_trace_dev_match file contains the name of the
+ device associated with the last PM event point saved in the RTC
+ across reboots when pm_trace has been used. More precisely it
+ contains the list of current devices (including those
+ registered by loadable kernel modules since boot) which match
+ the device hash in the RTC at boot, with a newline after each
+ one.
+
+ The advantage of this file over the hash matches printed to the
+ kernel log (see /sys/power/pm_trace), is that it includes
+ devices created after boot by loadable kernel modules.
+
+ Due to the small hash size necessary to fit in the RTC, it is
+ possible that more than one device matches the hash, in which
+ case further investigation is required to determine which
+ device is causing the problem. Note that genuine RTC clock
+ values (such as when pm_trace has not been used), can still
+ match a device and output it's name here.
+
+What: /sys/power/pm_async
+Date: January 2009
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/power/pm_async file controls the switch allowing the
+ user space to enable or disable asynchronous suspend and resume
+ of devices. If enabled, this feature will cause some device
+ drivers' suspend and resume callbacks to be executed in parallel
+ with each other and with the main suspend thread. It is enabled
+ if this file contains "1", which is the default. It may be
+ disabled by writing "0" to this file, in which case all devices
+ will be suspended and resumed synchronously.
+
+What: /sys/power/wakeup_count
+Date: July 2010
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/power/wakeup_count file allows user space to put the
+ system into a sleep state while taking into account the
+ concurrent arrival of wakeup events. Reading from it returns
+ the current number of registered wakeup events and it blocks if
+ some wakeup events are being processed at the time the file is
+ read from. Writing to it will only succeed if the current
+ number of wakeup events is equal to the written value and, if
+ successful, will make the kernel abort a subsequent transition
+ to a sleep state if any wakeup events are reported after the
+ write has returned.
+
+What: /sys/power/reserved_size
+Date: May 2011
+Contact: Rafael J. Wysocki <rjw@sisk.pl>
+Description:
+ The /sys/power/reserved_size file allows user space to control
+ the amount of memory reserved for allocations made by device
+ drivers during the "device freeze" stage of hibernation. It can
+ be written a string representing a non-negative integer that
+ will be used as the amount of memory to reserve for allocations
+ made by device drivers' "freeze" callbacks, in bytes.
+
+ Reading from this file will display the current value, which is
+ set to 1 MB by default.
diff --git a/Documentation/ABI/testing/sysfs-pps b/Documentation/ABI/testing/sysfs-pps
new file mode 100644
index 00000000000..25028c7bc37
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-pps
@@ -0,0 +1,73 @@
+What: /sys/class/pps/
+Date: February 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/pps/ directory will contain files and
+ directories that will provide a unified interface to
+ the PPS sources.
+
+What: /sys/class/pps/ppsX/
+Date: February 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/pps/ppsX/ directory is related to X-th
+ PPS source into the system. Each directory will
+ contain files to manage and control its PPS source.
+
+What: /sys/class/pps/ppsX/assert
+Date: February 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/pps/ppsX/assert file reports the assert events
+ and the assert sequence number of the X-th source in the form:
+
+ <secs>.<nsec>#<sequence>
+
+ If the source has no assert events the content of this file
+ is empty.
+
+What: /sys/class/pps/ppsX/clear
+Date: February 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/pps/ppsX/clear file reports the clear events
+ and the clear sequence number of the X-th source in the form:
+
+ <secs>.<nsec>#<sequence>
+
+ If the source has no clear events the content of this file
+ is empty.
+
+What: /sys/class/pps/ppsX/mode
+Date: February 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/pps/ppsX/mode file reports the functioning
+ mode of the X-th source in hexadecimal encoding.
+
+ Please, refer to linux/include/linux/pps.h for further
+ info.
+
+What: /sys/class/pps/ppsX/echo
+Date: February 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/pps/ppsX/echo file reports if the X-th does
+ or does not support an "echo" function.
+
+What: /sys/class/pps/ppsX/name
+Date: February 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/pps/ppsX/name file reports the name of the
+ X-th source.
+
+What: /sys/class/pps/ppsX/path
+Date: February 2008
+Contact: Rodolfo Giometti <giometti@linux.it>
+Description:
+ The /sys/class/pps/ppsX/path file reports the path name of
+ the device connected with the X-th source.
+
+ If the source is not connected with any device the content
+ of this file is empty.
diff --git a/Documentation/ABI/testing/sysfs-profiling b/Documentation/ABI/testing/sysfs-profiling
new file mode 100644
index 00000000000..b02d8b8c173
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-profiling
@@ -0,0 +1,13 @@
+What: /sys/kernel/profile
+Date: September 2008
+Contact: Dave Hansen <dave@linux.vnet.ibm.com>
+Description:
+ /sys/kernel/profile is the runtime equivalent
+ of the boot-time profile= option.
+
+ You can get the same effect running:
+
+ echo 2 > /sys/kernel/profile
+
+ as you would by issuing profile=2 on the boot
+ command line.
diff --git a/Documentation/ABI/testing/sysfs-ptp b/Documentation/ABI/testing/sysfs-ptp
new file mode 100644
index 00000000000..d40d2b55050
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-ptp
@@ -0,0 +1,98 @@
+What: /sys/class/ptp/
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This directory contains files and directories
+ providing a standardized interface to the ancillary
+ features of PTP hardware clocks.
+
+What: /sys/class/ptp/ptpN/
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This directory contains the attributes of the Nth PTP
+ hardware clock registered into the PTP class driver
+ subsystem.
+
+What: /sys/class/ptp/ptpN/clock_name
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the name of the PTP hardware clock
+ as a human readable string.
+
+What: /sys/class/ptp/ptpN/max_adjustment
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the PTP hardware clock's maximum
+ frequency adjustment value (a positive integer) in
+ parts per billion.
+
+What: /sys/class/ptp/ptpN/n_alarms
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the number of periodic or one shot
+ alarms offer by the PTP hardware clock.
+
+What: /sys/class/ptp/ptpN/n_external_timestamps
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the number of external timestamp
+ channels offered by the PTP hardware clock.
+
+What: /sys/class/ptp/ptpN/n_periodic_outputs
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the number of programmable periodic
+ output channels offered by the PTP hardware clock.
+
+What: /sys/class/ptp/ptpN/pps_avaiable
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file indicates whether the PTP hardware clock
+ supports a Pulse Per Second to the host CPU. Reading
+ "1" means that the PPS is supported, while "0" means
+ not supported.
+
+What: /sys/class/ptp/ptpN/extts_enable
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This write-only file enables or disables external
+ timestamps. To enable external timestamps, write the
+ channel index followed by a "1" into the file.
+ To disable external timestamps, write the channel
+ index followed by a "0" into the file.
+
+What: /sys/class/ptp/ptpN/fifo
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file provides timestamps on external events, in
+ the form of three integers: channel index, seconds,
+ and nanoseconds.
+
+What: /sys/class/ptp/ptpN/period
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This write-only file enables or disables periodic
+ outputs. To enable a periodic output, write five
+ integers into the file: channel index, start time
+ seconds, start time nanoseconds, period seconds, and
+ period nanoseconds. To disable a periodic output, set
+ all the seconds and nanoseconds values to zero.
+
+What: /sys/class/ptp/ptpN/pps_enable
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This write-only file enables or disables delivery of
+ PPS events to the Linux PPS subsystem. To enable PPS
+ events, write a "1" into the file. To disable events,
+ write a "0" into the file.
diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty
new file mode 100644
index 00000000000..b138b663bf5
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-tty
@@ -0,0 +1,19 @@
+What: /sys/class/tty/console/active
+Date: Nov 2010
+Contact: Kay Sievers <kay.sievers@vrfy.org>
+Description:
+ Shows the list of currently configured
+ console devices, like 'tty1 ttyS0'.
+ The last entry in the file is the active
+ device connected to /dev/console.
+ The file supports poll() to detect virtual
+ console switches.
+
+What: /sys/class/tty/tty0/active
+Date: Nov 2010
+Contact: Kay Sievers <kay.sievers@vrfy.org>
+Description:
+ Shows the currently active virtual console
+ device, like 'tty1'.
+ The file supports poll() to detect virtual
+ console switches.
diff --git a/Documentation/ABI/testing/sysfs-wusb_cbaf b/Documentation/ABI/testing/sysfs-wusb_cbaf
new file mode 100644
index 00000000000..a99c5f86a37
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-wusb_cbaf
@@ -0,0 +1,100 @@
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_*
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Various files for managing Cable Based Association of
+ (wireless) USB devices.
+
+ The sequence of operations should be:
+
+ 1. Device is plugged in.
+
+ 2. The connection manager (CM) sees a device with CBA capability.
+ (the wusb_chid etc. files in /sys/devices/blah/OURDEVICE).
+
+ 3. The CM writes the host name, supported band groups,
+ and the CHID (host ID) into the wusb_host_name,
+ wusb_host_band_groups and wusb_chid files. These
+ get sent to the device and the CDID (if any) for
+ this host is requested.
+
+ 4. The CM can verify that the device's supported band
+ groups (wusb_device_band_groups) are compatible
+ with the host.
+
+ 5. The CM reads the wusb_cdid file.
+
+ 6. The CM looks it up its database.
+
+ - If it has a matching CHID,CDID entry, the device
+ has been authorized before and nothing further
+ needs to be done.
+
+ - If the CDID is zero (or the CM doesn't find a
+ matching CDID in its database), the device is
+ assumed to be not known. The CM may associate
+ the host with device by: writing a randomly
+ generated CDID to wusb_cdid and then a random CK
+ to wusb_ck (this uploads the new CC to the
+ device).
+
+ CMD may choose to prompt the user before
+ associating with a new device.
+
+ 7. Device is unplugged.
+
+ References:
+ [WUSB-AM] Association Models Supplement to the
+ Certified Wireless Universal Serial Bus
+ Specification, version 1.0.
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_chid
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The CHID of the host formatted as 16 space-separated
+ hex octets.
+
+ Writes fetches device's supported band groups and the
+ the CDID for any existing association with this host.
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_name
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ A friendly name for the host as a UTF-8 encoded string.
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_band_groups
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The band groups supported by the host, in the format
+ defined in [WUSB-AM].
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_device_band_groups
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The band groups supported by the device, in the format
+ defined in [WUSB-AM].
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_cdid
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The device's CDID formatted as 16 space-separated hex
+ octets.
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_ck
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Write 16 space-separated random, hex octets to
+ associate with the device.