summaryrefslogtreecommitdiff
path: root/drivers/hwmon/lis3lv02d.h
blob: 62c6652eb9d5a34fe3730307ebf27f66ef0c81ef (plain)
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
/*
 *  lis3lv02d.h - ST LIS3LV02DL accelerometer driver
 *
 *  Copyright (C) 2007-2008 Yan Burman
 *  Copyright (C) 2008-2009 Eric Piel
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <linux/platform_device.h>
#include <linux/input-polldev.h>

/*
 * This driver tries to support the "digital" accelerometer chips from
 * STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL,
 * 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_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 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 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,
};

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,
};

struct axis_conversion {
	s8	x;
	s8	y;
	s8	z;
};

struct lis3lv02d {
	void			*bus_priv; /* used by the bus layer only */
	int (*init) (struct lis3lv02d *lis3);
	int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
	int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);

	int                     *odrs;     /* Supported output data rates */
	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 */
	atomic_t		count;     /* interrupt count after last read */
	struct 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 lis3lv02d_platform_data *pdata;	/* for passing board config */
	struct mutex		mutex;     /* Serialize poll and selftest */
};

int lis3lv02d_init_device(struct lis3lv02d *lis3);
int lis3lv02d_joystick_enable(void);
void lis3lv02d_joystick_disable(void);
void lis3lv02d_poweroff(struct lis3lv02d *lis3);
void lis3lv02d_poweron(struct lis3lv02d *lis3);
int lis3lv02d_remove_fs(struct lis3lv02d *lis3);

extern struct lis3lv02d lis3_dev;