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Input: adxl34x - add support for ADXL346 orientation sensing

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Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Michael Hennerich 2010-06-25 08:44:10 -07:00 • committed by Dmitry Torokhov
parent e27c729219
commit 671386bb23
2 changed files with 114 additions and 4 deletions
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56
include/linux/input/adxl34x.h
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@ -288,6 +288,62 @@ struct adxl34x_platform_data {
u32 ev_code_ff; /* EV_KEY */
u32 ev_code_act_inactivity; /* EV_KEY */
/*
* Use ADXL34x INT2 instead of INT1
*/
u8 use_int2;
/*
* ADXL346 only ORIENTATION SENSING feature
* The orientation function of the ADXL346 reports both 2-D and
* 3-D orientation concurrently.
*/
#define ADXL_EN_ORIENTATION_2D 1
#define ADXL_EN_ORIENTATION_3D 2
#define ADXL_EN_ORIENTATION_2D_3D 3
u8 orientation_enable;
/*
* The width of the deadzone region between two or more
* orientation positions is determined by setting the Deadzone
* value. The deadzone region size can be specified with a
* resolution of 3.6deg. The deadzone angle represents the total
* angle where the orientation is considered invalid.
*/
#define ADXL_DEADZONE_ANGLE_0p0 0 /* !!!0.0 [deg] */
#define ADXL_DEADZONE_ANGLE_3p6 1 /* 3.6 [deg] */
#define ADXL_DEADZONE_ANGLE_7p2 2 /* 7.2 [deg] */
#define ADXL_DEADZONE_ANGLE_10p8 3 /* 10.8 [deg] */
#define ADXL_DEADZONE_ANGLE_14p4 4 /* 14.4 [deg] */
#define ADXL_DEADZONE_ANGLE_18p0 5 /* 18.0 [deg] */
#define ADXL_DEADZONE_ANGLE_21p6 6 /* 21.6 [deg] */
#define ADXL_DEADZONE_ANGLE_25p2 7 /* 25.2 [deg] */
u8 deadzone_angle;
/*
* To eliminate most human motion such as walking or shaking,
* a Divisor value should be selected to effectively limit the
* orientation bandwidth. Set the depth of the filter used to
* low-pass filter the measured acceleration for stable
* orientation sensing
*/
#define ADXL_LP_FILTER_DIVISOR_2 0
#define ADXL_LP_FILTER_DIVISOR_4 1
#define ADXL_LP_FILTER_DIVISOR_8 2
#define ADXL_LP_FILTER_DIVISOR_16 3
#define ADXL_LP_FILTER_DIVISOR_32 4
#define ADXL_LP_FILTER_DIVISOR_64 5
#define ADXL_LP_FILTER_DIVISOR_128 6
#define ADXL_LP_FILTER_DIVISOR_256 7
u8 divisor_length;
u32 ev_codes_orient_2d[4]; /* EV_KEY {+X, -X, +Y, -Y} */
u32 ev_codes_orient_3d[6]; /* EV_KEY {+Z, +Y, +X, -X, -Y, -Z} */
};
#endif