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1/*
2 * lis3lv02d.h - ST LIS3LV02DL accelerometer driver
3 *
4 * Copyright (C) 2007-2008 Yan Burman
bc62c147 5 * Copyright (C) 2008-2009 Eric Piel
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6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
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21#include <linux/platform_device.h>
22#include <linux/input-polldev.h>
f9deb41f 23#include <linux/regulator/consumer.h>
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24
25/*
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26 * This driver tries to support the "digital" accelerometer chips from
27 * STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL,
28 * LIS35DE, or LIS202DL. They are very similar in terms of programming, with
29 * almost the same registers. In addition to differing on physical properties,
30 * they differ on the number of axes (2/3), precision (8/12 bits), and special
31 * features (freefall detection, click...). Unfortunately, not all the
32 * differences can be probed via a register.
33 * They can be connected either via I²C or SPI.
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34 */
35
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36#include <linux/lis3lv02d.h>
37
8f3128e7 38enum lis3_reg {
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39 WHO_AM_I = 0x0F,
40 OFFSET_X = 0x16,
41 OFFSET_Y = 0x17,
42 OFFSET_Z = 0x18,
43 GAIN_X = 0x19,
44 GAIN_Y = 0x1A,
45 GAIN_Z = 0x1B,
46 CTRL_REG1 = 0x20,
47 CTRL_REG2 = 0x21,
48 CTRL_REG3 = 0x22,
78537c3b 49 CTRL_REG4 = 0x23,
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50 HP_FILTER_RESET = 0x23,
51 STATUS_REG = 0x27,
52 OUTX_L = 0x28,
53 OUTX_H = 0x29,
137bad32 54 OUTX = 0x29,
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55 OUTY_L = 0x2A,
56 OUTY_H = 0x2B,
137bad32 57 OUTY = 0x2B,
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58 OUTZ_L = 0x2C,
59 OUTZ_H = 0x2D,
137bad32 60 OUTZ = 0x2D,
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61};
62
63enum lis302d_reg {
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64 FF_WU_CFG_1 = 0x30,
65 FF_WU_SRC_1 = 0x31,
66 FF_WU_THS_1 = 0x32,
67 FF_WU_DURATION_1 = 0x33,
68 FF_WU_CFG_2 = 0x34,
69 FF_WU_SRC_2 = 0x35,
70 FF_WU_THS_2 = 0x36,
71 FF_WU_DURATION_2 = 0x37,
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72 CLICK_CFG = 0x38,
73 CLICK_SRC = 0x39,
74 CLICK_THSY_X = 0x3B,
75 CLICK_THSZ = 0x3C,
76 CLICK_TIMELIMIT = 0x3D,
77 CLICK_LATENCY = 0x3E,
78 CLICK_WINDOW = 0x3F,
79};
80
81enum lis3lv02d_reg {
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82 FF_WU_CFG = 0x30,
83 FF_WU_SRC = 0x31,
84 FF_WU_ACK = 0x32,
85 FF_WU_THS_L = 0x34,
86 FF_WU_THS_H = 0x35,
87 FF_WU_DURATION = 0x36,
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88 DD_CFG = 0x38,
89 DD_SRC = 0x39,
90 DD_ACK = 0x3A,
91 DD_THSI_L = 0x3C,
92 DD_THSI_H = 0x3D,
93 DD_THSE_L = 0x3E,
94 DD_THSE_H = 0x3F,
95};
96
bc62c147 97enum lis3_who_am_i {
78537c3b 98 WAI_3DC = 0x33, /* 8 bits: LIS3DC, HP3DC */
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99 WAI_12B = 0x3A, /* 12 bits: LIS3LV02D[LQ]... */
100 WAI_8B = 0x3B, /* 8 bits: LIS[23]02D[LQ]... */
101 WAI_6B = 0x52, /* 6 bits: LIS331DLF - not supported */
102};
103
2db4a76d 104enum lis3lv02d_ctrl1_12b {
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105 CTRL1_Xen = 0x01,
106 CTRL1_Yen = 0x02,
107 CTRL1_Zen = 0x04,
108 CTRL1_ST = 0x08,
109 CTRL1_DF0 = 0x10,
110 CTRL1_DF1 = 0x20,
111 CTRL1_PD0 = 0x40,
112 CTRL1_PD1 = 0x80,
113};
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114
115/* Delta to ctrl1_12b version */
116enum lis3lv02d_ctrl1_8b {
117 CTRL1_STM = 0x08,
118 CTRL1_STP = 0x10,
119 CTRL1_FS = 0x20,
120 CTRL1_PD = 0x40,
121 CTRL1_DR = 0x80,
122};
123
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124enum lis3lv02d_ctrl1_3dc {
125 CTRL1_ODR0 = 0x10,
126 CTRL1_ODR1 = 0x20,
127 CTRL1_ODR2 = 0x40,
128 CTRL1_ODR3 = 0x80,
129};
130
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131enum lis3lv02d_ctrl2 {
132 CTRL2_DAS = 0x01,
133 CTRL2_SIM = 0x02,
134 CTRL2_DRDY = 0x04,
135 CTRL2_IEN = 0x08,
136 CTRL2_BOOT = 0x10,
137 CTRL2_BLE = 0x20,
138 CTRL2_BDU = 0x40, /* Block Data Update */
139 CTRL2_FS = 0x80, /* Full Scale selection */
140};
141
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142enum lis3lv02d_ctrl4_3dc {
143 CTRL4_SIM = 0x01,
144 CTRL4_ST0 = 0x02,
145 CTRL4_ST1 = 0x04,
146 CTRL4_FS0 = 0x10,
147 CTRL4_FS1 = 0x20,
148};
149
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150enum lis302d_ctrl2 {
151 HP_FF_WU2 = 0x08,
152 HP_FF_WU1 = 0x04,
2a7fade7 153 CTRL2_BOOT_8B = 0x40,
8873c334 154};
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155
156enum lis3lv02d_ctrl3 {
157 CTRL3_CFS0 = 0x01,
158 CTRL3_CFS1 = 0x02,
159 CTRL3_FDS = 0x10,
160 CTRL3_HPFF = 0x20,
161 CTRL3_HPDD = 0x40,
162 CTRL3_ECK = 0x80,
163};
164
165enum lis3lv02d_status_reg {
166 STATUS_XDA = 0x01,
167 STATUS_YDA = 0x02,
168 STATUS_ZDA = 0x04,
169 STATUS_XYZDA = 0x08,
170 STATUS_XOR = 0x10,
171 STATUS_YOR = 0x20,
172 STATUS_ZOR = 0x40,
173 STATUS_XYZOR = 0x80,
174};
175
176enum lis3lv02d_ff_wu_cfg {
177 FF_WU_CFG_XLIE = 0x01,
178 FF_WU_CFG_XHIE = 0x02,
179 FF_WU_CFG_YLIE = 0x04,
180 FF_WU_CFG_YHIE = 0x08,
181 FF_WU_CFG_ZLIE = 0x10,
182 FF_WU_CFG_ZHIE = 0x20,
183 FF_WU_CFG_LIR = 0x40,
184 FF_WU_CFG_AOI = 0x80,
185};
186
187enum lis3lv02d_ff_wu_src {
188 FF_WU_SRC_XL = 0x01,
189 FF_WU_SRC_XH = 0x02,
190 FF_WU_SRC_YL = 0x04,
191 FF_WU_SRC_YH = 0x08,
192 FF_WU_SRC_ZL = 0x10,
193 FF_WU_SRC_ZH = 0x20,
194 FF_WU_SRC_IA = 0x40,
195};
196
197enum lis3lv02d_dd_cfg {
198 DD_CFG_XLIE = 0x01,
199 DD_CFG_XHIE = 0x02,
200 DD_CFG_YLIE = 0x04,
201 DD_CFG_YHIE = 0x08,
202 DD_CFG_ZLIE = 0x10,
203 DD_CFG_ZHIE = 0x20,
204 DD_CFG_LIR = 0x40,
205 DD_CFG_IEND = 0x80,
206};
207
208enum lis3lv02d_dd_src {
209 DD_SRC_XL = 0x01,
210 DD_SRC_XH = 0x02,
211 DD_SRC_YL = 0x04,
212 DD_SRC_YH = 0x08,
213 DD_SRC_ZL = 0x10,
214 DD_SRC_ZH = 0x20,
215 DD_SRC_IA = 0x40,
216};
217
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218enum lis3lv02d_click_src_8b {
219 CLICK_SINGLE_X = 0x01,
220 CLICK_DOUBLE_X = 0x02,
221 CLICK_SINGLE_Y = 0x04,
222 CLICK_DOUBLE_Y = 0x08,
223 CLICK_SINGLE_Z = 0x10,
224 CLICK_DOUBLE_Z = 0x20,
225 CLICK_IA = 0x40,
226};
227
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228enum lis3lv02d_reg_state {
229 LIS3_REG_OFF = 0x00,
230 LIS3_REG_ON = 0x01,
231};
232
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233union axis_conversion {
234 struct {
235 int x, y, z;
236 };
237 int as_array[3];
f9deb41f 238
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239};
240
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241struct lis3lv02d {
242 void *bus_priv; /* used by the bus layer only */
2a346996 243 struct device *pm_dev; /* for pm_runtime purposes */
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244 int (*init) (struct lis3lv02d *lis3);
245 int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
246 int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
f10a5407 247 int (*blkread) (struct lis3lv02d *lis3, int reg, int len, u8 *ret);
f9deb41f 248 int (*reg_ctrl) (struct lis3lv02d *lis3, bool state);
cfce41a6 249
a253aaef 250 int *odrs; /* Supported output data rates */
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251 u8 *regs; /* Regs to store / restore */
252 int regs_size;
253 u8 *reg_cache;
254 bool regs_stored;
a253aaef 255 u8 odr_mask; /* ODR bit mask */
bc62c147 256 u8 whoami; /* indicates measurement precision */
a38da2ed 257 s16 (*read_data) (struct lis3lv02d *lis3, int reg);
137bad32 258 int mdps_max_val;
641615ab 259 int pwron_delay;
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260 int scale; /*
261 * relationship between 1 LBS and mG
262 * (1/1000th of earth gravity)
263 */
137bad32 264
dc6ea97b 265 struct input_polled_dev *idev; /* input device */
cfce41a6 266 struct platform_device *pdev; /* platform device */
f9deb41f 267 struct regulator_bulk_data regulators[2];
cfce41a6 268 atomic_t count; /* interrupt count after last read */
2ee32144 269 union axis_conversion ac; /* hw -> logical axis */
6d94d408 270 int mapped_btns[3];
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271
272 u32 irq; /* IRQ number */
273 struct fasync_struct *async_queue; /* queue for the misc device */
274 wait_queue_head_t misc_wait; /* Wait queue for the misc device */
275 unsigned long misc_opened; /* bit0: whether the device is open */
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276 int data_ready_count[2];
277 atomic_t wake_thread;
e726111f 278 unsigned char irq_cfg;
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279
280 struct lis3lv02d_platform_data *pdata; /* for passing board config */
2db4a76d 281 struct mutex mutex; /* Serialize poll and selftest */
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282};
283
a38da2ed 284int lis3lv02d_init_device(struct lis3lv02d *lis3);
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285int lis3lv02d_joystick_enable(void);
286void lis3lv02d_joystick_disable(void);
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287void lis3lv02d_poweroff(struct lis3lv02d *lis3);
288void lis3lv02d_poweron(struct lis3lv02d *lis3);
a002ee89 289int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
cfce41a6 290
a38da2ed 291extern struct lis3lv02d lis3_dev;