diff options
| -rw-r--r-- | Documentation/hwmon/lis3lv02d | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/Documentation/hwmon/lis3lv02d b/Documentation/hwmon/lis3lv02d index 65dfb0c0fd67..0fcfc4a7ccdc 100644 --- a/Documentation/hwmon/lis3lv02d +++ b/Documentation/hwmon/lis3lv02d | |||
| @@ -13,18 +13,21 @@ Author: | |||
| 13 | Description | 13 | Description |
| 14 | ----------- | 14 | ----------- |
| 15 | 15 | ||
| 16 | This driver provides support for the accelerometer found in various HP laptops | 16 | This driver provides support for the accelerometer found in various HP |
| 17 | sporting the feature officially called "HP Mobile Data Protection System 3D" or | 17 | laptops sporting the feature officially called "HP Mobile Data |
| 18 | "HP 3D DriveGuard". It detect automatically laptops with this sensor. Known models | 18 | Protection System 3D" or "HP 3D DriveGuard". It detect automatically |
| 19 | (for now the HP 2133, nc6420, nc2510, nc8510, nc84x0, nw9440 and nx9420) will | 19 | laptops with this sensor. Known models (for now the HP 2133, nc6420, |
| 20 | have their axis automatically oriented on standard way (eg: you can directly | 20 | nc2510, nc8510, nc84x0, nw9440 and nx9420) will have their axis |
| 21 | play neverball). The accelerometer data is readable via | 21 | automatically oriented on standard way (eg: you can directly play |
| 22 | neverball). The accelerometer data is readable via | ||
| 22 | /sys/devices/platform/lis3lv02d. | 23 | /sys/devices/platform/lis3lv02d. |
| 23 | 24 | ||
| 24 | Sysfs attributes under /sys/devices/platform/lis3lv02d/: | 25 | Sysfs attributes under /sys/devices/platform/lis3lv02d/: |
| 25 | position - 3D position that the accelerometer reports. Format: "(x,y,z)" | 26 | position - 3D position that the accelerometer reports. Format: "(x,y,z)" |
| 26 | calibrate - read: values (x, y, z) that are used as the base for input class device operation. | 27 | calibrate - read: values (x, y, z) that are used as the base for input |
| 27 | write: forces the base to be recalibrated with the current position. | 28 | class device operation. |
| 29 | write: forces the base to be recalibrated with the current | ||
| 30 | position. | ||
| 28 | rate - reports the sampling rate of the accelerometer device in HZ | 31 | rate - reports the sampling rate of the accelerometer device in HZ |
| 29 | 32 | ||
| 30 | This driver also provides an absolute input class device, allowing | 33 | This driver also provides an absolute input class device, allowing |
| @@ -39,11 +42,12 @@ the accelerometer are converted into a "standard" organisation of the axes | |||
| 39 | * When the laptop is horizontal the position reported is about 0 for X and Y | 42 | * When the laptop is horizontal the position reported is about 0 for X and Y |
| 40 | and a positive value for Z | 43 | and a positive value for Z |
| 41 | * If the left side is elevated, X increases (becomes positive) | 44 | * If the left side is elevated, X increases (becomes positive) |
| 42 | * If the front side (where the touchpad is) is elevated, Y decreases (becomes negative) | 45 | * If the front side (where the touchpad is) is elevated, Y decreases |
| 46 | (becomes negative) | ||
| 43 | * If the laptop is put upside-down, Z becomes negative | 47 | * If the laptop is put upside-down, Z becomes negative |
| 44 | 48 | ||
| 45 | If your laptop model is not recognized (cf "dmesg"), you can send an email to the | 49 | If your laptop model is not recognized (cf "dmesg"), you can send an |
| 46 | authors to add it to the database. When reporting a new laptop, please include | 50 | email to the authors to add it to the database. When reporting a new |
| 47 | the output of "dmidecode" plus the value of /sys/devices/platform/lis3lv02d/position | 51 | laptop, please include the output of "dmidecode" plus the value of |
| 48 | in these four cases. | 52 | /sys/devices/platform/lis3lv02d/position in these four cases. |
| 49 | 53 | ||