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diff --git a/Documentation/laptops/toshiba_haps.rst b/Documentation/laptops/toshiba_haps.rst deleted file mode 100644 index 11dfc428c080..000000000000 --- a/Documentation/laptops/toshiba_haps.rst +++ /dev/null @@ -1,87 +0,0 @@ -==================================== -Toshiba HDD Active Protection Sensor -==================================== - -Kernel driver: toshiba_haps - -Author: Azael Avalos <coproscefalo@gmail.com> - - -.. 0. Contents - - 1. Description - 2. Interface - 3. Accelerometer axes - 4. Supported devices - 5. Usage - - -1. Description --------------- - -This driver provides support for the accelerometer found in various Toshiba -laptops, being called "Toshiba HDD Protection - Shock Sensor" officially, -and detects laptops automatically with this device. -On Windows, Toshiba provided software monitors this device and provides -automatic HDD protection (head unload) on sudden moves or harsh vibrations, -however, this driver only provides a notification via a sysfs file to let -userspace tools or daemons act accordingly, as well as providing a sysfs -file to set the desired protection level or sensor sensibility. - - -2. Interface ------------- - -This device comes with 3 methods: - -==== ===================================================================== -_STA Checks existence of the device, returning Zero if the device does not - exists or is not supported. -PTLV Sets the desired protection level. -RSSS Shuts down the HDD protection interface for a few seconds, - then restores normal operation. -==== ===================================================================== - -Note: - The presence of Solid State Drives (SSD) can make this driver to fail loading, - given the fact that such drives have no movable parts, and thus, not requiring - any "protection" as well as failing during the evaluation of the _STA method - found under this device. - - -3. Accelerometer axes ---------------------- - -This device does not report any axes, however, to query the sensor position -a couple HCI (Hardware Configuration Interface) calls (0x6D and 0xA6) are -provided to query such information, handled by the kernel module toshiba_acpi -since kernel version 3.15. - - -4. Supported devices --------------------- - -This driver binds itself to the ACPI device TOS620A, and any Toshiba laptop -with this device is supported, given the fact that they have the presence of -conventional HDD and not only SSD, or a combination of both HDD and SSD. - - -5. Usage --------- - -The sysfs files under /sys/devices/LNXSYSTM:00/LNXSYBUS:00/TOS620A:00/ are: - -================ ============================================================ -protection_level The protection_level is readable and writeable, and - provides a way to let userspace query the current protection - level, as well as set the desired protection level, the - available protection levels are: - - ============ ======= ========== ======== - 0 - Disabled 1 - Low 2 - Medium 3 - High - ============ ======= ========== ======== - -reset_protection The reset_protection entry is writeable only, being "1" - the only parameter it accepts, it is used to trigger - a reset of the protection interface. -================ ============================================================ |