1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* lis3lv02d.h - ST LIS3LV02DL accelerometer driver
*
* Copyright (C) 2007-2008 Yan Burman
* Copyright (C) 2008-2009 Eric Piel
*/
#include <linux/platform_device.h>
#include <linux/input-polldev.h>
#include <linux/regulator/consumer.h>
#include <linux/miscdevice.h>
/*
* This driver tries to support the "digital" accelerometer chips from
* STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL,
* LIS331DLH, LIS35DE, or LIS202DL. They are very similar in terms of
* programming, with almost the same registers. In addition to differing
* on physical properties, they differ on the number of axes (2/3),
* precision (8/12 bits), and special features (freefall detection,
* click...). Unfortunately, not all the differences can be probed via
* a register. They can be connected either via I²C or SPI.
*/
#include <linux/lis3lv02d.h>
enum lis3_reg {
WHO_AM_I = 0x0F,
OFFSET_X = 0x16,
OFFSET_Y = 0x17,
OFFSET_Z = 0x18,
GAIN_X = 0x19,
GAIN_Y = 0x1A,
GAIN_Z = 0x1B,
CTRL_REG1 = 0x20,
CTRL_REG2 = 0x21,
CTRL_REG3 = 0x22,
CTRL_REG4 = 0x23,
HP_FILTER_RESET = 0x23,
STATUS_REG = 0x27,
OUTX_L = 0x28,
OUTX_H = 0x29,
OUTX = 0x29,
OUTY_L = 0x2A,
OUTY_H = 0x2B,
OUTY = 0x2B,
OUTZ_L = 0x2C,
OUTZ_H = 0x2D,
OUTZ = 0x2D,
};
enum lis302d_reg {
FF_WU_CFG_1 = 0x30,
FF_WU_SRC_1 = 0x31,
FF_WU_THS_1 = 0x32,
FF_WU_DURATION_1 = 0x33,
FF_WU_CFG_2 = 0x34,
FF_WU_SRC_2 = 0x35,
FF_WU_THS_2 = 0x36,
FF_WU_DURATION_2 = 0x37,
CLICK_CFG = 0x38,
CLICK_SRC = 0x39,
CLICK_THSY_X = 0x3B,
CLICK_THSZ = 0x3C,
CLICK_TIMELIMIT = 0x3D,
CLICK_LATENCY = 0x3E,
CLICK_WINDOW = 0x3F,
};
enum lis3lv02d_reg {
FF_WU_CFG = 0x30,
FF_WU_SRC = 0x31,
FF_WU_ACK = 0x32,
FF_WU_THS_L = 0x34,
FF_WU_THS_H = 0x35,
FF_WU_DURATION = 0x36,
DD_CFG = 0x38,
DD_SRC = 0x39,
DD_ACK = 0x3A,
DD_THSI_L = 0x3C,
DD_THSI_H = 0x3D,
DD_THSE_L = 0x3E,
DD_THSE_H = 0x3F,
};
enum lis3_who_am_i {
WAI_3DLH = 0x32, /* 16 bits: LIS331DLH */
WAI_3DC = 0x33, /* 8 bits: LIS3DC, HP3DC */
WAI_12B = 0x3A, /* 12 bits: LIS3LV02D[LQ]... */
WAI_8B = 0x3B, /* 8 bits: LIS[23]02D[LQ]... */
WAI_6B = 0x52, /* 6 bits: LIS331DLF - not supported */
};
enum lis3_type {
LIS3LV02D,
LIS3DC,
HP3DC,
LIS2302D,
LIS331DLF,
LIS331DLH,
};
enum lis3lv02d_ctrl1_12b {
CTRL1_Xen = 0x01,
CTRL1_Yen = 0x02,
CTRL1_Zen = 0x04,
CTRL1_ST = 0x08,
CTRL1_DF0 = 0x10,
CTRL1_DF1 = 0x20,
CTRL1_PD0 = 0x40,
CTRL1_PD1 = 0x80,
};
/* Delta to ctrl1_12b version */
enum lis3lv02d_ctrl1_8b {
CTRL1_STM = 0x08,
CTRL1_STP = 0x10,
CTRL1_FS = 0x20,
CTRL1_PD = 0x40,
CTRL1_DR = 0x80,
};
enum lis3lv02d_ctrl1_3dc {
CTRL1_ODR0 = 0x10,
CTRL1_ODR1 = 0x20,
CTRL1_ODR2 = 0x40,
CTRL1_ODR3 = 0x80,
};
enum lis331dlh_ctrl1 {
CTRL1_DR0 = 0x08,
CTRL1_DR1 = 0x10,
CTRL1_PM0 = 0x20,
CTRL1_PM1 = 0x40,
CTRL1_PM2 = 0x80,
};
enum lis331dlh_ctrl2 {
CTRL2_HPEN1 = 0x04,
CTRL2_HPEN2 = 0x08,
CTRL2_FDS_3DLH = 0x10,
CTRL2_BOOT_3DLH = 0x80,
};
enum lis331dlh_ctrl4 {
CTRL4_STSIGN = 0x08,
CTRL4_BLE = 0x40,
CTRL4_BDU = 0x80,
};
enum lis3lv02d_ctrl2 {
CTRL2_DAS = 0x01,
CTRL2_SIM = 0x02,
CTRL2_DRDY = 0x04,
CTRL2_IEN = 0x08,
CTRL2_BOOT = 0x10,
CTRL2_BLE = 0x20,
CTRL2_BDU = 0x40, /* Block Data Update */
CTRL2_FS = 0x80, /* Full Scale selection */
};
enum lis3lv02d_ctrl4_3dc {
CTRL4_SIM = 0x01,
CTRL4_ST0 = 0x02,
CTRL4_ST1 = 0x04,
CTRL4_FS0 = 0x10,
CTRL4_FS1 = 0x20,
};
enum lis302d_ctrl2 {
HP_FF_WU2 = 0x08,
HP_FF_WU1 = 0x04,
CTRL2_BOOT_8B = 0x40,
};
enum lis3lv02d_ctrl3 {
CTRL3_CFS0 = 0x01,
CTRL3_CFS1 = 0x02,
CTRL3_FDS = 0x10,
CTRL3_HPFF = 0x20,
CTRL3_HPDD = 0x40,
CTRL3_ECK = 0x80,
};
enum lis3lv02d_status_reg {
STATUS_XDA = 0x01,
STATUS_YDA = 0x02,
STATUS_ZDA = 0x04,
STATUS_XYZDA = 0x08,
STATUS_XOR = 0x10,
STATUS_YOR = 0x20,
STATUS_ZOR = 0x40,
STATUS_XYZOR = 0x80,
};
enum lis3lv02d_ff_wu_cfg {
FF_WU_CFG_XLIE = 0x01,
FF_WU_CFG_XHIE = 0x02,
FF_WU_CFG_YLIE = 0x04,
FF_WU_CFG_YHIE = 0x08,
FF_WU_CFG_ZLIE = 0x10,
FF_WU_CFG_ZHIE = 0x20,
FF_WU_CFG_LIR = 0x40,
FF_WU_CFG_AOI = 0x80,
};
enum lis3lv02d_ff_wu_src {
FF_WU_SRC_XL = 0x01,
FF_WU_SRC_XH = 0x02,
FF_WU_SRC_YL = 0x04,
FF_WU_SRC_YH = 0x08,
FF_WU_SRC_ZL = 0x10,
FF_WU_SRC_ZH = 0x20,
FF_WU_SRC_IA = 0x40,
};
enum lis3lv02d_dd_cfg {
DD_CFG_XLIE = 0x01,
DD_CFG_XHIE = 0x02,
DD_CFG_YLIE = 0x04,
DD_CFG_YHIE = 0x08,
DD_CFG_ZLIE = 0x10,
DD_CFG_ZHIE = 0x20,
DD_CFG_LIR = 0x40,
DD_CFG_IEND = 0x80,
};
enum lis3lv02d_dd_src {
DD_SRC_XL = 0x01,
DD_SRC_XH = 0x02,
DD_SRC_YL = 0x04,
DD_SRC_YH = 0x08,
DD_SRC_ZL = 0x10,
DD_SRC_ZH = 0x20,
DD_SRC_IA = 0x40,
};
enum lis3lv02d_click_src_8b {
CLICK_SINGLE_X = 0x01,
CLICK_DOUBLE_X = 0x02,
CLICK_SINGLE_Y = 0x04,
CLICK_DOUBLE_Y = 0x08,
CLICK_SINGLE_Z = 0x10,
CLICK_DOUBLE_Z = 0x20,
CLICK_IA = 0x40,
};
enum lis3lv02d_reg_state {
LIS3_REG_OFF = 0x00,
LIS3_REG_ON = 0x01,
};
union axis_conversion {
struct {
int x, y, z;
};
int as_array[3];
};
struct lis3lv02d {
void *bus_priv; /* used by the bus layer only */
struct device *pm_dev; /* for pm_runtime purposes */
int (*init) (struct lis3lv02d *lis3);
int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
int (*blkread) (struct lis3lv02d *lis3, int reg, int len, u8 *ret);
int (*reg_ctrl) (struct lis3lv02d *lis3, bool state);
int *odrs; /* Supported output data rates */
u8 *regs; /* Regs to store / restore */
int regs_size;
u8 *reg_cache;
bool regs_stored;
u8 odr_mask; /* ODR bit mask */
u8 whoami; /* indicates measurement precision */
s16 (*read_data) (struct lis3lv02d *lis3, int reg);
int mdps_max_val;
int pwron_delay;
int scale; /*
* relationship between 1 LBS and mG
* (1/1000th of earth gravity)
*/
struct input_polled_dev *idev; /* input device */
struct platform_device *pdev; /* platform device */
struct regulator_bulk_data regulators[2];
atomic_t count; /* interrupt count after last read */
union axis_conversion ac; /* hw -> logical axis */
int mapped_btns[3];
u32 irq; /* IRQ number */
struct fasync_struct *async_queue; /* queue for the misc device */
wait_queue_head_t misc_wait; /* Wait queue for the misc device */
unsigned long misc_opened; /* bit0: whether the device is open */
struct miscdevice miscdev;
int data_ready_count[2];
atomic_t wake_thread;
unsigned char irq_cfg;
unsigned int shift_adj;
struct lis3lv02d_platform_data *pdata; /* for passing board config */
struct mutex mutex; /* Serialize poll and selftest */
#ifdef CONFIG_OF
struct device_node *of_node;
#endif
};
int lis3lv02d_init_device(struct lis3lv02d *lis3);
int lis3lv02d_joystick_enable(struct lis3lv02d *lis3);
void lis3lv02d_joystick_disable(struct lis3lv02d *lis3);
void lis3lv02d_poweroff(struct lis3lv02d *lis3);
int lis3lv02d_poweron(struct lis3lv02d *lis3);
int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
int lis3lv02d_init_dt(struct lis3lv02d *lis3);
extern struct lis3lv02d lis3_dev;
|
