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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-04-07 13:34:16 -0700
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-04-07 13:34:16 -0700
commit38f4b8c0da01ae7cd9b93386842ce272d6fde9ab (patch)
tree3c8c52201aac038094bfea7efdd0984a8f62045e /Documentation/hwmon/lis3lv02d
parenta811454027352c762e0d5bba1b1d8f7d26bf96ae (diff)
parent8e2c4f2844c0e8dcdfe312e5f2204854ca8532c6 (diff)
Merge commit 'origin/master' into for-linus/xen/master
* commit 'origin/master': (4825 commits) Fix build errors due to CONFIG_BRANCH_TRACER=y parport: Use the PCI IRQ if offered tty: jsm cleanups Adjust path to gpio headers KGDB_SERIAL_CONSOLE check for module Change KCONFIG name tty: Blackin CTS/RTS Change hardware flow control from poll to interrupt driven Add support for the MAX3100 SPI UART. lanana: assign a device name and numbering for MAX3100 serqt: initial clean up pass for tty side tty: Use the generic RS485 ioctl on CRIS tty: Correct inline types for tty_driver_kref_get() splice: fix deadlock in splicing to file nilfs2: support nanosecond timestamp nilfs2: introduce secondary super block nilfs2: simplify handling of active state of segments nilfs2: mark minor flag for checkpoint created by internal operation nilfs2: clean up sketch file nilfs2: super block operations fix endian bug ... Conflicts: arch/x86/include/asm/thread_info.h arch/x86/lguest/boot.c drivers/xen/manage.c
Diffstat (limited to 'Documentation/hwmon/lis3lv02d')
-rw-r--r--Documentation/hwmon/lis3lv02d20
1 files changed, 15 insertions, 5 deletions
diff --git a/Documentation/hwmon/lis3lv02d b/Documentation/hwmon/lis3lv02d
index 287f8c90265..effe949a728 100644
--- a/Documentation/hwmon/lis3lv02d
+++ b/Documentation/hwmon/lis3lv02d
@@ -1,11 +1,11 @@
Kernel driver lis3lv02d
-==================
+=======================
Supported chips:
* STMicroelectronics LIS3LV02DL and LIS3LV02DQ
-Author:
+Authors:
Yan Burman <burman.yan@gmail.com>
Eric Piel <eric.piel@tremplin-utc.net>
@@ -15,7 +15,7 @@ Description
This driver provides support for the accelerometer found in various HP
laptops sporting the feature officially called "HP Mobile Data
-Protection System 3D" or "HP 3D DriveGuard". It detect automatically
+Protection System 3D" or "HP 3D DriveGuard". It detects automatically
laptops with this sensor. Known models (for now the HP 2133, nc6420,
nc2510, nc8510, nc84x0, nw9440 and nx9420) will have their axis
automatically oriented on standard way (eg: you can directly play
@@ -27,7 +27,7 @@ position - 3D position that the accelerometer reports. Format: "(x,y,z)"
calibrate - read: values (x, y, z) that are used as the base for input
class device operation.
write: forces the base to be recalibrated with the current
- position.
+ position.
rate - reports the sampling rate of the accelerometer device in HZ
This driver also provides an absolute input class device, allowing
@@ -48,7 +48,7 @@ For better compatibility between the various laptops. The values reported by
the accelerometer are converted into a "standard" organisation of the axes
(aka "can play neverball out of the box"):
* When the laptop is horizontal the position reported is about 0 for X and Y
-and a positive value for Z
+ and a positive value for Z
* If the left side is elevated, X increases (becomes positive)
* If the front side (where the touchpad is) is elevated, Y decreases
(becomes negative)
@@ -59,3 +59,13 @@ email to the authors to add it to the database. When reporting a new
laptop, please include the output of "dmidecode" plus the value of
/sys/devices/platform/lis3lv02d/position in these four cases.
+Q&A
+---
+
+Q: How do I safely simulate freefall? I have an HP "portable
+workstation" which has about 3.5kg and a plastic case, so letting it
+fall to the ground is out of question...
+
+A: The sensor is pretty sensitive, so your hands can do it. Lift it
+into free space, follow the fall with your hands for like 10
+centimeters. That should be enough to trigger the detection.