diff options
| author | Éric Piel <eric.piel@tremplin-utc.net> | 2009-12-14 18:01:39 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-15 08:53:36 -0800 |
| commit | bc62c1471773fc32adcfc05100abd16fa2b6e126 (patch) | |
| tree | 34894261672d0c73c01b46ed92ebad7eb75ea8c4 /Documentation/hwmon | |
| parent | 66c8569bf990064b3f11e0f211a81a46e0b627ff (diff) | |
lis3: update documentation and comments
Most of the documentation and comments were written when the driver was
only supporting one type of chip, only via ACPI/HP. Update the info to
the much clearer understanding that we have now.
Signed-off-by: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/lis3lv02d | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/Documentation/hwmon/lis3lv02d b/Documentation/hwmon/lis3lv02d index effe949a728..21f09025220 100644 --- a/Documentation/hwmon/lis3lv02d +++ b/Documentation/hwmon/lis3lv02d @@ -3,7 +3,8 @@ Kernel driver lis3lv02d Supported chips: - * STMicroelectronics LIS3LV02DL and LIS3LV02DQ + * STMicroelectronics LIS3LV02DL, LIS3LV02DQ (12 bits precision) + * STMicroelectronics LIS302DL, LIS3L02DQ, LIS331DL (8 bits) Authors: Yan Burman <burman.yan@gmail.com> @@ -13,13 +14,12 @@ Authors: 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 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 -neverball). The accelerometer data is readable via +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 detects automatically laptops with this sensor. Known +models (full list can be found in drivers/hwmon/hp_accel.c) will have their +axis automatically oriented on standard way (eg: you can directly play +neverball). The accelerometer data is readable via /sys/devices/platform/lis3lv02d. Sysfs attributes under /sys/devices/platform/lis3lv02d/: @@ -33,12 +33,16 @@ rate - reports the sampling rate of the accelerometer device in HZ This driver also provides an absolute input class device, allowing the laptop to act as a pinball machine-esque joystick. +On HP laptops, if the led infrastructure is activated, support for a led +indicating disk protection will be provided as /sys/class/leds/hp::hddprotect. + Another feature of the driver is misc device called "freefall" that acts similar to /dev/rtc and reacts on free-fall interrupts received from the device. It supports blocking operations, poll/select and fasync operation modes. You must read 1 bytes from the device. The result is number of free-fall interrupts since the last successful -read (or 255 if number of interrupts would not fit). +read (or 255 if number of interrupts would not fit). See the hpfall.c +file for an example on using the device. Axes orientation @@ -55,7 +59,7 @@ the accelerometer are converted into a "standard" organisation of the axes * If the laptop is put upside-down, Z becomes negative If your laptop model is not recognized (cf "dmesg"), you can send an -email to the authors to add it to the database. When reporting a new +email to the maintainer 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. |