Input: adxl34x - add support for ADXL346 orientation sensing

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>

1 files changed, 56 insertions, 0 deletions

diff --git a/include/linux/input/adxl34x.h b/include/linux/input/adxl34x.h
index 712118238038..df00d998a44a 100644
--- a/include/linux/input/adxl34x.h
+++ b/include/linux/input/adxl34x.h
@@ -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