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TOMOYO Linux Cross Reference
Linux/include/linux/input/adxl34x.h

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Diff markup

Differences between /include/linux/input/adxl34x.h (Version linux-6.12-rc7) and /include/linux/input/adxl34x.h (Version linux-5.15.171)


  1 /* SPDX-License-Identifier: GPL-2.0-or-later *      1 /* SPDX-License-Identifier: GPL-2.0-or-later */
  2 /*                                                  2 /*
  3  * include/linux/input/adxl34x.h                    3  * include/linux/input/adxl34x.h
  4  *                                                  4  *
  5  * Digital Accelerometer characteristics are h      5  * Digital Accelerometer characteristics are highly application specific
  6  * and may vary between boards and models. The      6  * and may vary between boards and models. The platform_data for the
  7  * device's "struct device" holds this informa      7  * device's "struct device" holds this information.
  8  *                                                  8  *
  9  * Copyright 2009 Analog Devices Inc.               9  * Copyright 2009 Analog Devices Inc.
 10  */                                                10  */
 11                                                    11 
 12 #ifndef __LINUX_INPUT_ADXL34X_H__                  12 #ifndef __LINUX_INPUT_ADXL34X_H__
 13 #define __LINUX_INPUT_ADXL34X_H__                  13 #define __LINUX_INPUT_ADXL34X_H__
 14                                                    14 
 15 #include <linux/input.h>                           15 #include <linux/input.h>
 16                                                    16 
 17 struct adxl34x_platform_data {                     17 struct adxl34x_platform_data {
 18                                                    18 
 19         /*                                         19         /*
 20          * X,Y,Z Axis Offset:                      20          * X,Y,Z Axis Offset:
 21          * offer user offset adjustments in tw     21          * offer user offset adjustments in twoscompliment
 22          * form with a scale factor of 15.6 mg     22          * form with a scale factor of 15.6 mg/LSB (i.e. 0x7F = +2 g)
 23          */                                        23          */
 24                                                    24 
 25         s8 x_axis_offset;                          25         s8 x_axis_offset;
 26         s8 y_axis_offset;                          26         s8 y_axis_offset;
 27         s8 z_axis_offset;                          27         s8 z_axis_offset;
 28                                                    28 
 29         /*                                         29         /*
 30          * TAP_X/Y/Z Enable: Setting TAP_X, Y,     30          * TAP_X/Y/Z Enable: Setting TAP_X, Y, or Z Enable enables X,
 31          * Y, or Z participation in Tap detect     31          * Y, or Z participation in Tap detection. A '' excludes the
 32          * selected axis from participation in     32          * selected axis from participation in Tap detection.
 33          * Setting the SUPPRESS bit suppresses     33          * Setting the SUPPRESS bit suppresses Double Tap detection if
 34          * acceleration greater than tap_thres     34          * acceleration greater than tap_threshold is present during the
 35          * tap_latency period, i.e. after the      35          * tap_latency period, i.e. after the first tap but before the
 36          * opening of the second tap window.       36          * opening of the second tap window.
 37          */                                        37          */
 38                                                    38 
 39 #define ADXL_SUPPRESS   (1 << 3)                   39 #define ADXL_SUPPRESS   (1 << 3)
 40 #define ADXL_TAP_X_EN   (1 << 2)                   40 #define ADXL_TAP_X_EN   (1 << 2)
 41 #define ADXL_TAP_Y_EN   (1 << 1)                   41 #define ADXL_TAP_Y_EN   (1 << 1)
 42 #define ADXL_TAP_Z_EN   (1 << 0)                   42 #define ADXL_TAP_Z_EN   (1 << 0)
 43                                                    43 
 44         u8 tap_axis_control;                       44         u8 tap_axis_control;
 45                                                    45 
 46         /*                                         46         /*
 47          * tap_threshold:                          47          * tap_threshold:
 48          * holds the threshold value for tap d     48          * holds the threshold value for tap detection/interrupts.
 49          * The data format is unsigned. The sc     49          * The data format is unsigned. The scale factor is 62.5 mg/LSB
 50          * (i.e. 0xFF = +16 g). A zero value m     50          * (i.e. 0xFF = +16 g). A zero value may result in undesirable
 51          * behavior if Tap/Double Tap is enabl     51          * behavior if Tap/Double Tap is enabled.
 52          */                                        52          */
 53                                                    53 
 54         u8 tap_threshold;                          54         u8 tap_threshold;
 55                                                    55 
 56         /*                                         56         /*
 57          * tap_duration:                           57          * tap_duration:
 58          * is an unsigned time value represent     58          * is an unsigned time value representing the maximum
 59          * time that an event must be above th     59          * time that an event must be above the tap_threshold threshold
 60          * to qualify as a tap event. The scal     60          * to qualify as a tap event. The scale factor is 625 us/LSB. A zero
 61          * value will prevent Tap/Double Tap f     61          * value will prevent Tap/Double Tap functions from working.
 62          */                                        62          */
 63                                                    63 
 64         u8 tap_duration;                           64         u8 tap_duration;
 65                                                    65 
 66         /*                                         66         /*
 67          * tap_latency:                            67          * tap_latency:
 68          * is an unsigned time value represent     68          * is an unsigned time value representing the wait time
 69          * from the detection of a tap event t     69          * from the detection of a tap event to the opening of the time
 70          * window tap_window for a possible se     70          * window tap_window for a possible second tap event. The scale
 71          * factor is 1.25 ms/LSB. A zero value     71          * factor is 1.25 ms/LSB. A zero value will disable the Double Tap
 72          * function.                               72          * function.
 73          */                                        73          */
 74                                                    74 
 75         u8 tap_latency;                            75         u8 tap_latency;
 76                                                    76 
 77         /*                                         77         /*
 78          * tap_window:                             78          * tap_window:
 79          * is an unsigned time value represent     79          * is an unsigned time value representing the amount
 80          * of time after the expiration of tap     80          * of time after the expiration of tap_latency during which a second
 81          * tap can begin. The scale factor is      81          * tap can begin. The scale factor is 1.25 ms/LSB. A zero value will
 82          * disable the Double Tap function.        82          * disable the Double Tap function.
 83          */                                        83          */
 84                                                    84 
 85         u8 tap_window;                             85         u8 tap_window;
 86                                                    86 
 87         /*                                         87         /*
 88          * act_axis_control:                       88          * act_axis_control:
 89          * X/Y/Z Enable: A '1' enables X, Y, o     89          * X/Y/Z Enable: A '1' enables X, Y, or Z participation in activity
 90          * or inactivity detection. A '' exclu     90          * or inactivity detection. A '' excludes the selected axis from
 91          * participation. If all of the axes a     91          * participation. If all of the axes are excluded, the function is
 92          * disabled.                               92          * disabled.
 93          * AC/DC: A '' = DC coupled operation      93          * AC/DC: A '' = DC coupled operation and a '1' = AC coupled
 94          * operation. In DC coupled operation,     94          * operation. In DC coupled operation, the current acceleration is
 95          * compared with activity_threshold an     95          * compared with activity_threshold and inactivity_threshold directly
 96          * to determine whether activity or in     96          * to determine whether activity or inactivity is detected. In AC
 97          * coupled operation for activity dete     97          * coupled operation for activity detection, the acceleration value
 98          * at the start of activity detection      98          * at the start of activity detection is taken as a reference value.
 99          * New samples of acceleration are the     99          * New samples of acceleration are then compared to this
100          * reference value and if the magnitud    100          * reference value and if the magnitude of the difference exceeds
101          * activity_threshold the device will     101          * activity_threshold the device will trigger an activity interrupt. In
102          * AC coupled operation for inactivity    102          * AC coupled operation for inactivity detection, a reference value
103          * is used again for comparison and is    103          * is used again for comparison and is updated whenever the
104          * device exceeds the inactivity thres    104          * device exceeds the inactivity threshold. Once the reference
105          * value is selected, the device compa    105          * value is selected, the device compares the magnitude of the
106          * difference between the reference va    106          * difference between the reference value and the current
107          * acceleration with inactivity_thresh    107          * acceleration with inactivity_threshold. If the difference is below
108          * inactivity_threshold for a total of    108          * inactivity_threshold for a total of inactivity_time, the device is
109          * considered inactive and the inactiv    109          * considered inactive and the inactivity interrupt is triggered.
110          */                                       110          */
111                                                   111 
112 #define ADXL_ACT_ACDC           (1 << 7)          112 #define ADXL_ACT_ACDC           (1 << 7)
113 #define ADXL_ACT_X_EN           (1 << 6)          113 #define ADXL_ACT_X_EN           (1 << 6)
114 #define ADXL_ACT_Y_EN           (1 << 5)          114 #define ADXL_ACT_Y_EN           (1 << 5)
115 #define ADXL_ACT_Z_EN           (1 << 4)          115 #define ADXL_ACT_Z_EN           (1 << 4)
116 #define ADXL_INACT_ACDC         (1 << 3)          116 #define ADXL_INACT_ACDC         (1 << 3)
117 #define ADXL_INACT_X_EN         (1 << 2)          117 #define ADXL_INACT_X_EN         (1 << 2)
118 #define ADXL_INACT_Y_EN         (1 << 1)          118 #define ADXL_INACT_Y_EN         (1 << 1)
119 #define ADXL_INACT_Z_EN         (1 << 0)          119 #define ADXL_INACT_Z_EN         (1 << 0)
120                                                   120 
121         u8 act_axis_control;                      121         u8 act_axis_control;
122                                                   122 
123         /*                                        123         /*
124          * activity_threshold:                    124          * activity_threshold:
125          * holds the threshold value for activ    125          * holds the threshold value for activity detection.
126          * The data format is unsigned. The sc    126          * The data format is unsigned. The scale factor is
127          * 62.5 mg/LSB. A zero value may resul    127          * 62.5 mg/LSB. A zero value may result in undesirable behavior if
128          * Activity interrupt is enabled.         128          * Activity interrupt is enabled.
129          */                                       129          */
130                                                   130 
131         u8 activity_threshold;                    131         u8 activity_threshold;
132                                                   132 
133         /*                                        133         /*
134          * inactivity_threshold:                  134          * inactivity_threshold:
135          * holds the threshold value for inact    135          * holds the threshold value for inactivity
136          * detection. The data format is unsig    136          * detection. The data format is unsigned. The scale
137          * factor is 62.5 mg/LSB. A zero value    137          * factor is 62.5 mg/LSB. A zero value may result in undesirable
138          * behavior if Inactivity interrupt is    138          * behavior if Inactivity interrupt is enabled.
139          */                                       139          */
140                                                   140 
141         u8 inactivity_threshold;                  141         u8 inactivity_threshold;
142                                                   142 
143         /*                                        143         /*
144          * inactivity_time:                       144          * inactivity_time:
145          * is an unsigned time value represent    145          * is an unsigned time value representing the
146          * amount of time that acceleration mu    146          * amount of time that acceleration must be below the value in
147          * inactivity_threshold for inactivity    147          * inactivity_threshold for inactivity to be declared. The scale factor
148          * is 1 second/LSB. Unlike the other i    148          * is 1 second/LSB. Unlike the other interrupt functions, which
149          * operate on unfiltered data, the ina    149          * operate on unfiltered data, the inactivity function operates on the
150          * filtered output data. At least one     150          * filtered output data. At least one output sample must be
151          * generated for the inactivity interr    151          * generated for the inactivity interrupt to be triggered. This will
152          * result in the function appearing un    152          * result in the function appearing un-responsive if the
153          * inactivity_time register is set wit    153          * inactivity_time register is set with a value less than the time
154          * constant of the Output Data Rate. A    154          * constant of the Output Data Rate. A zero value will result in an
155          * interrupt when the output data is b    155          * interrupt when the output data is below inactivity_threshold.
156          */                                       156          */
157                                                   157 
158         u8 inactivity_time;                       158         u8 inactivity_time;
159                                                   159 
160         /*                                        160         /*
161          * free_fall_threshold:                   161          * free_fall_threshold:
162          * holds the threshold value for Free-    162          * holds the threshold value for Free-Fall detection.
163          * The data format is unsigned. The ro    163          * The data format is unsigned. The root-sum-square(RSS) value
164          * of all axes is calculated and compa    164          * of all axes is calculated and compared to the value in
165          * free_fall_threshold to determine if    165          * free_fall_threshold to determine if a free fall event may be
166          * occurring.  The scale factor is 62.    166          * occurring.  The scale factor is 62.5 mg/LSB. A zero value may
167          * result in undesirable behavior if F    167          * result in undesirable behavior if Free-Fall interrupt is
168          * enabled. Values between 300 and 600    168          * enabled. Values between 300 and 600 mg (0x05 to 0x09) are
169          * recommended.                           169          * recommended.
170          */                                       170          */
171                                                   171 
172         u8 free_fall_threshold;                   172         u8 free_fall_threshold;
173                                                   173 
174         /*                                        174         /*
175          * free_fall_time:                        175          * free_fall_time:
176          * is an unsigned time value represent    176          * is an unsigned time value representing the minimum
177          * time that the RSS value of all axes    177          * time that the RSS value of all axes must be less than
178          * free_fall_threshold to generate a F    178          * free_fall_threshold to generate a Free-Fall interrupt. The
179          * scale factor is 5 ms/LSB. A zero va    179          * scale factor is 5 ms/LSB. A zero value may result in
180          * undesirable behavior if Free-Fall i    180          * undesirable behavior if Free-Fall interrupt is enabled.
181          * Values between 100 to 350 ms (0x14     181          * Values between 100 to 350 ms (0x14 to 0x46) are recommended.
182          */                                       182          */
183                                                   183 
184         u8 free_fall_time;                        184         u8 free_fall_time;
185                                                   185 
186         /*                                        186         /*
187          * data_rate:                             187          * data_rate:
188          * Selects device bandwidth and output    188          * Selects device bandwidth and output data rate.
189          * RATE = 3200 Hz / (2^(15 - x)). Defa    189          * RATE = 3200 Hz / (2^(15 - x)). Default value is 0x0A, or 100 Hz
190          * Output Data Rate. An Output Data Ra    190          * Output Data Rate. An Output Data Rate should be selected that
191          * is appropriate for the communicatio    191          * is appropriate for the communication protocol and frequency
192          * selected. Selecting too high of an     192          * selected. Selecting too high of an Output Data Rate with a low
193          * communication speed will result in     193          * communication speed will result in samples being discarded.
194          */                                       194          */
195                                                   195 
196         u8 data_rate;                             196         u8 data_rate;
197                                                   197 
198         /*                                        198         /*
199          * data_range:                            199          * data_range:
200          * FULL_RES: When this bit is set with    200          * FULL_RES: When this bit is set with the device is
201          * in Full-Resolution Mode, where the     201          * in Full-Resolution Mode, where the output resolution increases
202          * with RANGE to maintain a 4 mg/LSB s    202          * with RANGE to maintain a 4 mg/LSB scale factor. When this
203          * bit is cleared the device is in 10-    203          * bit is cleared the device is in 10-bit Mode and RANGE determine the
204          * maximum g-Range and scale factor.      204          * maximum g-Range and scale factor.
205          */                                       205          */
206                                                   206 
207 #define ADXL_FULL_RES           (1 << 3)          207 #define ADXL_FULL_RES           (1 << 3)
208 #define ADXL_RANGE_PM_2g        0                 208 #define ADXL_RANGE_PM_2g        0
209 #define ADXL_RANGE_PM_4g        1                 209 #define ADXL_RANGE_PM_4g        1
210 #define ADXL_RANGE_PM_8g        2                 210 #define ADXL_RANGE_PM_8g        2
211 #define ADXL_RANGE_PM_16g       3                 211 #define ADXL_RANGE_PM_16g       3
212                                                   212 
213         u8 data_range;                            213         u8 data_range;
214                                                   214 
215         /*                                        215         /*
216          * low_power_mode:                        216          * low_power_mode:
217          * A '' = Normal operation and a '1' =    217          * A '' = Normal operation and a '1' = Reduced
218          * power operation with somewhat highe    218          * power operation with somewhat higher noise.
219          */                                       219          */
220                                                   220 
221         u8 low_power_mode;                        221         u8 low_power_mode;
222                                                   222 
223         /*                                        223         /*
224          * power_mode:                            224          * power_mode:
225          * LINK: A '1' with both the activity     225          * LINK: A '1' with both the activity and inactivity functions
226          * enabled will delay the start of the    226          * enabled will delay the start of the activity function until
227          * inactivity is detected. Once activi    227          * inactivity is detected. Once activity is detected, inactivity
228          * detection will begin and prevent th    228          * detection will begin and prevent the detection of activity. This
229          * bit serially links the activity and    229          * bit serially links the activity and inactivity functions. When ''
230          * the inactivity and activity functio    230          * the inactivity and activity functions are concurrent. Additional
231          * information can be found in the ADX    231          * information can be found in the ADXL34x datasheet's Application
232          * section under Link Mode.               232          * section under Link Mode.
233          * AUTO_SLEEP: A '1' sets the ADXL34x     233          * AUTO_SLEEP: A '1' sets the ADXL34x to switch to Sleep Mode
234          * when inactivity (acceleration has b    234          * when inactivity (acceleration has been below inactivity_threshold
235          * for at least inactivity_time) is de    235          * for at least inactivity_time) is detected and the LINK bit is set.
236          * A '' disables automatic switching t    236          * A '' disables automatic switching to Sleep Mode. See the
237          * Sleep Bit section of the ADXL34x da    237          * Sleep Bit section of the ADXL34x datasheet for more information.
238          */                                       238          */
239                                                   239 
240 #define ADXL_LINK       (1 << 5)                  240 #define ADXL_LINK       (1 << 5)
241 #define ADXL_AUTO_SLEEP (1 << 4)                  241 #define ADXL_AUTO_SLEEP (1 << 4)
242                                                   242 
243         u8 power_mode;                            243         u8 power_mode;
244                                                   244 
245         /*                                        245         /*
246          * fifo_mode:                             246          * fifo_mode:
247          * BYPASS The FIFO is bypassed            247          * BYPASS The FIFO is bypassed
248          * FIFO   FIFO collects up to 32 value    248          * FIFO   FIFO collects up to 32 values then stops collecting data
249          * STREAM FIFO holds the last 32 data     249          * STREAM FIFO holds the last 32 data values. Once full, the FIFO's
250          *        oldest data is lost as it is    250          *        oldest data is lost as it is replaced with newer data
251          *                                        251          *
252          * DEFAULT should be ADXL_FIFO_STREAM     252          * DEFAULT should be ADXL_FIFO_STREAM
253          */                                       253          */
254                                                   254 
255 #define ADXL_FIFO_BYPASS        0                 255 #define ADXL_FIFO_BYPASS        0
256 #define ADXL_FIFO_FIFO          1                 256 #define ADXL_FIFO_FIFO          1
257 #define ADXL_FIFO_STREAM        2                 257 #define ADXL_FIFO_STREAM        2
258                                                   258 
259         u8 fifo_mode;                             259         u8 fifo_mode;
260                                                   260 
261         /*                                        261         /*
262          * watermark:                             262          * watermark:
263          * The Watermark feature can be used t    263          * The Watermark feature can be used to reduce the interrupt load
264          * of the system. The FIFO fills up to    264          * of the system. The FIFO fills up to the value stored in watermark
265          * [1..32] and then generates an inter    265          * [1..32] and then generates an interrupt.
266          * A '' disables the watermark feature    266          * A '' disables the watermark feature.
267          */                                       267          */
268                                                   268 
269         u8 watermark;                             269         u8 watermark;
270                                                   270 
271         /*                                        271         /*
272          * When acceleration measurements are     272          * When acceleration measurements are received from the ADXL34x
273          * events are sent to the event subsys    273          * events are sent to the event subsystem. The following settings
274          * select the event type and event cod    274          * select the event type and event code for new x, y and z axis data
275          * respectively.                          275          * respectively.
276          */                                       276          */
277         u32 ev_type;    /* EV_ABS or EV_REL */    277         u32 ev_type;    /* EV_ABS or EV_REL */
278                                                   278 
279         u32 ev_code_x;  /* ABS_X,Y,Z or REL_X,    279         u32 ev_code_x;  /* ABS_X,Y,Z or REL_X,Y,Z */
280         u32 ev_code_y;  /* ABS_X,Y,Z or REL_X,    280         u32 ev_code_y;  /* ABS_X,Y,Z or REL_X,Y,Z */
281         u32 ev_code_z;  /* ABS_X,Y,Z or REL_X,    281         u32 ev_code_z;  /* ABS_X,Y,Z or REL_X,Y,Z */
282                                                   282 
283         /*                                        283         /*
284          * A valid BTN or KEY Code; use tap_ax    284          * A valid BTN or KEY Code; use tap_axis_control to disable
285          * event reporting                        285          * event reporting
286          */                                       286          */
287                                                   287 
288         u32 ev_code_tap[3];     /* EV_KEY {X-A    288         u32 ev_code_tap[3];     /* EV_KEY {X-Axis, Y-Axis, Z-Axis} */
289                                                   289 
290         /*                                        290         /*
291          * A valid BTN or KEY Code for Free-Fa    291          * A valid BTN or KEY Code for Free-Fall or Activity enables
292          * input event reporting. A '' disable    292          * input event reporting. A '' disables the Free-Fall or
293          * Activity reporting.                    293          * Activity reporting.
294          */                                       294          */
295                                                   295 
296         u32 ev_code_ff; /* EV_KEY */              296         u32 ev_code_ff; /* EV_KEY */
297         u32 ev_code_act_inactivity;     /* EV_    297         u32 ev_code_act_inactivity;     /* EV_KEY */
298                                                   298 
299         /*                                        299         /*
300          * Use ADXL34x INT2 pin instead of INT    300          * Use ADXL34x INT2 pin instead of INT1 pin for interrupt output
301          */                                       301          */
302         u8 use_int2;                              302         u8 use_int2;
303                                                   303 
304         /*                                        304         /*
305          * ADXL346 only ORIENTATION SENSING fe    305          * ADXL346 only ORIENTATION SENSING feature
306          * The orientation function of the ADX    306          * The orientation function of the ADXL346 reports both 2-D and
307          * 3-D orientation concurrently.          307          * 3-D orientation concurrently.
308          */                                       308          */
309                                                   309 
310 #define ADXL_EN_ORIENTATION_2D          1         310 #define ADXL_EN_ORIENTATION_2D          1
311 #define ADXL_EN_ORIENTATION_3D          2         311 #define ADXL_EN_ORIENTATION_3D          2
312 #define ADXL_EN_ORIENTATION_2D_3D       3         312 #define ADXL_EN_ORIENTATION_2D_3D       3
313                                                   313 
314         u8 orientation_enable;                    314         u8 orientation_enable;
315                                                   315 
316         /*                                        316         /*
317          * The width of the deadzone region be    317          * The width of the deadzone region between two or more
318          * orientation positions is determined    318          * orientation positions is determined by setting the Deadzone
319          * value. The deadzone region size can    319          * value. The deadzone region size can be specified with a
320          * resolution of 3.6deg. The deadzone     320          * resolution of 3.6deg. The deadzone angle represents the total
321          * angle where the orientation is cons    321          * angle where the orientation is considered invalid.
322          */                                       322          */
323                                                   323 
324 #define ADXL_DEADZONE_ANGLE_0p0         0         324 #define ADXL_DEADZONE_ANGLE_0p0         0       /* !!!0.0 [deg] */
325 #define ADXL_DEADZONE_ANGLE_3p6         1         325 #define ADXL_DEADZONE_ANGLE_3p6         1       /* 3.6 [deg] */
326 #define ADXL_DEADZONE_ANGLE_7p2         2         326 #define ADXL_DEADZONE_ANGLE_7p2         2       /* 7.2 [deg] */
327 #define ADXL_DEADZONE_ANGLE_10p8        3         327 #define ADXL_DEADZONE_ANGLE_10p8        3       /* 10.8 [deg] */
328 #define ADXL_DEADZONE_ANGLE_14p4        4         328 #define ADXL_DEADZONE_ANGLE_14p4        4       /* 14.4 [deg] */
329 #define ADXL_DEADZONE_ANGLE_18p0        5         329 #define ADXL_DEADZONE_ANGLE_18p0        5       /* 18.0 [deg] */
330 #define ADXL_DEADZONE_ANGLE_21p6        6         330 #define ADXL_DEADZONE_ANGLE_21p6        6       /* 21.6 [deg] */
331 #define ADXL_DEADZONE_ANGLE_25p2        7         331 #define ADXL_DEADZONE_ANGLE_25p2        7       /* 25.2 [deg] */
332                                                   332 
333         u8 deadzone_angle;                        333         u8 deadzone_angle;
334                                                   334 
335         /*                                        335         /*
336          * To eliminate most human motion such    336          * To eliminate most human motion such as walking or shaking,
337          * a Divisor value should be selected     337          * a Divisor value should be selected to effectively limit the
338          * orientation bandwidth. Set the dept    338          * orientation bandwidth. Set the depth of the filter used to
339          * low-pass filter the measured accele    339          * low-pass filter the measured acceleration for stable
340          * orientation sensing                    340          * orientation sensing
341          */                                       341          */
342                                                   342 
343 #define ADXL_LP_FILTER_DIVISOR_2        0         343 #define ADXL_LP_FILTER_DIVISOR_2        0
344 #define ADXL_LP_FILTER_DIVISOR_4        1         344 #define ADXL_LP_FILTER_DIVISOR_4        1
345 #define ADXL_LP_FILTER_DIVISOR_8        2         345 #define ADXL_LP_FILTER_DIVISOR_8        2
346 #define ADXL_LP_FILTER_DIVISOR_16       3         346 #define ADXL_LP_FILTER_DIVISOR_16       3
347 #define ADXL_LP_FILTER_DIVISOR_32       4         347 #define ADXL_LP_FILTER_DIVISOR_32       4
348 #define ADXL_LP_FILTER_DIVISOR_64       5         348 #define ADXL_LP_FILTER_DIVISOR_64       5
349 #define ADXL_LP_FILTER_DIVISOR_128      6         349 #define ADXL_LP_FILTER_DIVISOR_128      6
350 #define ADXL_LP_FILTER_DIVISOR_256      7         350 #define ADXL_LP_FILTER_DIVISOR_256      7
351                                                   351 
352         u8 divisor_length;                        352         u8 divisor_length;
353                                                   353 
354         u32 ev_codes_orient_2d[4];      /* EV_    354         u32 ev_codes_orient_2d[4];      /* EV_KEY {+X, -X, +Y, -Y} */
355         u32 ev_codes_orient_3d[6];      /* EV_    355         u32 ev_codes_orient_3d[6];      /* EV_KEY {+Z, +Y, +X, -X, -Y, -Z} */
356 };                                                356 };
357 #endif                                            357 #endif
358                                                   358 

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