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Input: adxl34x - documentation cleanup 

This patch clarifies a few bits of documentation in the header file
for the adxl34x driver.

Signed-off-by: Michael Tandy <lkml@mkt.me.uk>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Michael Tandy 2011-09-20 22:42:51 -07:00 committed by Dmitry Torokhov
parent cca84699a0
commit 5eb9f900e5
1 changed files with 14 additions and 7 deletions
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21
include/linux/input/adxl34x.h
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@ -30,8 +30,9 @@ struct adxl34x_platform_data {
* Y, or Z participation in Tap detection. A '0' excludes the
* selected axis from participation in Tap detection.
* Setting the SUPPRESS bit suppresses Double Tap detection if
* acceleration greater than tap_threshold is present between
* taps.
* acceleration greater than tap_threshold is present during the
* tap_latency period, i.e. after the first tap but before the
* opening of the second tap window.
*/
#define ADXL_SUPPRESS (1 << 3)
@ -226,13 +227,13 @@ struct adxl34x_platform_data {
* detection will begin and prevent the detection of activity. This
* bit serially links the activity and inactivity functions. When '0'
* the inactivity and activity functions are concurrent. Additional
* information can be found in the Application section under Link
* Mode.
* information can be found in the ADXL34x datasheet's Application
* section under Link Mode.
* AUTO_SLEEP: A '1' sets the ADXL34x to switch to Sleep Mode
* when inactivity (acceleration has been below inactivity_threshold
* for at least inactivity_time) is detected and the LINK bit is set.
* A '0' disables automatic switching to Sleep Mode. See SLEEP
* for further description.
* A '0' disables automatic switching to Sleep Mode. See the
* Sleep Bit section of the ADXL34x datasheet for more information.
*/
#define ADXL_LINK (1 << 5)
@ -266,6 +267,12 @@ struct adxl34x_platform_data {
u8 watermark;
/*
* When acceleration measurements are received from the ADXL34x
* events are sent to the event subsystem. The following settings
* select the event type and event code for new x, y and z axis data
* respectively.
*/
u32 ev_type; /* EV_ABS or EV_REL */
u32 ev_code_x; /* ABS_X,Y,Z or REL_X,Y,Z */
@ -289,7 +296,7 @@ struct adxl34x_platform_data {
u32 ev_code_act_inactivity; /* EV_KEY */
/*
* Use ADXL34x INT2 instead of INT1
* Use ADXL34x INT2 pin instead of INT1 pin for interrupt output
*/
u8 use_int2;