Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86

Pull x86 platform driver updates from Matthew Garrett:
 "A moderate number of changes, but nothing awfully significant.

  A lot of const cleanups, some reworking and additions to the rfkill
  quirks in the asus driver, a new driver for generating falling laptop
  events on Toshibas and some misc fixes.

  Maybe vendors have stopped inventing things"

* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: (41 commits)
  platform/x86: Enable build support for toshiba_haps
  Documentation: Add file about toshiba_haps module
  platform/x86: Toshiba HDD Active Protection Sensor
  asus-nb-wmi: Add wapf4 quirk for the U32U
  alienware-wmi: make hdmi_mux enabled on case-by-case basis
  ideapad-laptop: Constify DMI table and other r/o variables
  asus-nb-wmi.c: Rename x401u quirk to wapf4
  compal-laptop: correct invalid hwmon name
  toshiba_acpi: Add Qosmio X75-A to the alt keymap dmi list
  toshiba_acpi: Add extra check to backlight code
  Fix log message about future removal of interface
  ideapad-laptop: Disable touchpad interface on Yoga models
  asus-nb-wmi: Add wapf4 quirk for the X550CC
  intel_ips: Make ips_mcp_limits variables static
  thinkpad_acpi: Mark volume_alsa_control_{vol,mute} as __initdata
  fujitsu-laptop: Mark fujitsu_dmi_table[] DMI table as __initconst
  hp-wmi: Add missing __init annotations to initialization code
  hp_accel: Constify ACPI and DMI tables
  fujitsu-tablet: Mark DMI callbacks as __init code
  dell-laptop: Mark dell_quirks[] DMI table as __initconst
  ...

2 files changed, 78 insertions, 0 deletions

diff --git a/Documentation/laptops/00-INDEX b/Documentation/laptops/00-INDEX
index d399ae1..a3b4f20 100644
--- a/Documentation/laptops/00-INDEX
+++ b/Documentation/laptops/00-INDEX
@@ -18,3 +18,5 @@ sonypi.txt
 	- info on Linux Sony Programmable I/O Device support.
 thinkpad-acpi.txt
 	- information on the (IBM and Lenovo) ThinkPad ACPI Extras driver.
+toshiba_haps.txt
+	- information on the Toshiba HDD Active Protection Sensor driver.
diff --git a/Documentation/laptops/toshiba_haps.txt b/Documentation/laptops/toshiba_haps.txt
new file mode 100644
index 0000000..11dbcfd
--- /dev/null
+++ b/Documentation/laptops/toshiba_haps.txt
@@ -0,0 +1,76 @@
+Kernel driver toshiba_haps
+Toshiba HDD Active Protection Sensor
+====================================
+
+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" officialy,
+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.