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455fbdd3 PM |
1 | /* |
2 | * lis3lv02d.h - ST LIS3LV02DL accelerometer driver | |
3 | * | |
4 | * Copyright (C) 2007-2008 Yan Burman | |
bc62c147 | 5 | * Copyright (C) 2008-2009 Eric Piel |
455fbdd3 PM |
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 | */ | |
dc6ea97b EP |
21 | #include <linux/platform_device.h> |
22 | #include <linux/input-polldev.h> | |
455fbdd3 PM |
23 | |
24 | /* | |
bc62c147 ÉP |
25 | * This driver tries to support the "digital" accelerometer chips from |
26 | * STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL, | |
27 | * LIS35DE, or LIS202DL. They are very similar in terms of programming, with | |
28 | * almost the same registers. In addition to differing on physical properties, | |
29 | * they differ on the number of axes (2/3), precision (8/12 bits), and special | |
30 | * features (freefall detection, click...). Unfortunately, not all the | |
31 | * differences can be probed via a register. | |
32 | * They can be connected either via I²C or SPI. | |
455fbdd3 PM |
33 | */ |
34 | ||
8f3128e7 DM |
35 | #include <linux/lis3lv02d.h> |
36 | ||
8f3128e7 | 37 | enum lis3_reg { |
455fbdd3 PM |
38 | WHO_AM_I = 0x0F, |
39 | OFFSET_X = 0x16, | |
40 | OFFSET_Y = 0x17, | |
41 | OFFSET_Z = 0x18, | |
42 | GAIN_X = 0x19, | |
43 | GAIN_Y = 0x1A, | |
44 | GAIN_Z = 0x1B, | |
45 | CTRL_REG1 = 0x20, | |
46 | CTRL_REG2 = 0x21, | |
47 | CTRL_REG3 = 0x22, | |
48 | HP_FILTER_RESET = 0x23, | |
49 | STATUS_REG = 0x27, | |
50 | OUTX_L = 0x28, | |
51 | OUTX_H = 0x29, | |
137bad32 | 52 | OUTX = 0x29, |
455fbdd3 PM |
53 | OUTY_L = 0x2A, |
54 | OUTY_H = 0x2B, | |
137bad32 | 55 | OUTY = 0x2B, |
455fbdd3 PM |
56 | OUTZ_L = 0x2C, |
57 | OUTZ_H = 0x2D, | |
137bad32 | 58 | OUTZ = 0x2D, |
8f3128e7 DM |
59 | }; |
60 | ||
61 | enum lis302d_reg { | |
8873c334 DM |
62 | FF_WU_CFG_1 = 0x30, |
63 | FF_WU_SRC_1 = 0x31, | |
64 | FF_WU_THS_1 = 0x32, | |
65 | FF_WU_DURATION_1 = 0x33, | |
66 | FF_WU_CFG_2 = 0x34, | |
67 | FF_WU_SRC_2 = 0x35, | |
68 | FF_WU_THS_2 = 0x36, | |
69 | FF_WU_DURATION_2 = 0x37, | |
8f3128e7 DM |
70 | CLICK_CFG = 0x38, |
71 | CLICK_SRC = 0x39, | |
72 | CLICK_THSY_X = 0x3B, | |
73 | CLICK_THSZ = 0x3C, | |
74 | CLICK_TIMELIMIT = 0x3D, | |
75 | CLICK_LATENCY = 0x3E, | |
76 | CLICK_WINDOW = 0x3F, | |
77 | }; | |
78 | ||
79 | enum lis3lv02d_reg { | |
8873c334 DM |
80 | FF_WU_CFG = 0x30, |
81 | FF_WU_SRC = 0x31, | |
82 | FF_WU_ACK = 0x32, | |
83 | FF_WU_THS_L = 0x34, | |
84 | FF_WU_THS_H = 0x35, | |
85 | FF_WU_DURATION = 0x36, | |
455fbdd3 PM |
86 | DD_CFG = 0x38, |
87 | DD_SRC = 0x39, | |
88 | DD_ACK = 0x3A, | |
89 | DD_THSI_L = 0x3C, | |
90 | DD_THSI_H = 0x3D, | |
91 | DD_THSE_L = 0x3E, | |
92 | DD_THSE_H = 0x3F, | |
93 | }; | |
94 | ||
bc62c147 ÉP |
95 | enum lis3_who_am_i { |
96 | WAI_12B = 0x3A, /* 12 bits: LIS3LV02D[LQ]... */ | |
97 | WAI_8B = 0x3B, /* 8 bits: LIS[23]02D[LQ]... */ | |
98 | WAI_6B = 0x52, /* 6 bits: LIS331DLF - not supported */ | |
99 | }; | |
100 | ||
2db4a76d | 101 | enum lis3lv02d_ctrl1_12b { |
455fbdd3 PM |
102 | CTRL1_Xen = 0x01, |
103 | CTRL1_Yen = 0x02, | |
104 | CTRL1_Zen = 0x04, | |
105 | CTRL1_ST = 0x08, | |
106 | CTRL1_DF0 = 0x10, | |
107 | CTRL1_DF1 = 0x20, | |
108 | CTRL1_PD0 = 0x40, | |
109 | CTRL1_PD1 = 0x80, | |
110 | }; | |
2db4a76d SO |
111 | |
112 | /* Delta to ctrl1_12b version */ | |
113 | enum lis3lv02d_ctrl1_8b { | |
114 | CTRL1_STM = 0x08, | |
115 | CTRL1_STP = 0x10, | |
116 | CTRL1_FS = 0x20, | |
117 | CTRL1_PD = 0x40, | |
118 | CTRL1_DR = 0x80, | |
119 | }; | |
120 | ||
455fbdd3 PM |
121 | enum lis3lv02d_ctrl2 { |
122 | CTRL2_DAS = 0x01, | |
123 | CTRL2_SIM = 0x02, | |
124 | CTRL2_DRDY = 0x04, | |
125 | CTRL2_IEN = 0x08, | |
126 | CTRL2_BOOT = 0x10, | |
127 | CTRL2_BLE = 0x20, | |
128 | CTRL2_BDU = 0x40, /* Block Data Update */ | |
129 | CTRL2_FS = 0x80, /* Full Scale selection */ | |
130 | }; | |
131 | ||
8873c334 DM |
132 | enum lis302d_ctrl2 { |
133 | HP_FF_WU2 = 0x08, | |
134 | HP_FF_WU1 = 0x04, | |
135 | }; | |
455fbdd3 PM |
136 | |
137 | enum lis3lv02d_ctrl3 { | |
138 | CTRL3_CFS0 = 0x01, | |
139 | CTRL3_CFS1 = 0x02, | |
140 | CTRL3_FDS = 0x10, | |
141 | CTRL3_HPFF = 0x20, | |
142 | CTRL3_HPDD = 0x40, | |
143 | CTRL3_ECK = 0x80, | |
144 | }; | |
145 | ||
146 | enum lis3lv02d_status_reg { | |
147 | STATUS_XDA = 0x01, | |
148 | STATUS_YDA = 0x02, | |
149 | STATUS_ZDA = 0x04, | |
150 | STATUS_XYZDA = 0x08, | |
151 | STATUS_XOR = 0x10, | |
152 | STATUS_YOR = 0x20, | |
153 | STATUS_ZOR = 0x40, | |
154 | STATUS_XYZOR = 0x80, | |
155 | }; | |
156 | ||
157 | enum lis3lv02d_ff_wu_cfg { | |
158 | FF_WU_CFG_XLIE = 0x01, | |
159 | FF_WU_CFG_XHIE = 0x02, | |
160 | FF_WU_CFG_YLIE = 0x04, | |
161 | FF_WU_CFG_YHIE = 0x08, | |
162 | FF_WU_CFG_ZLIE = 0x10, | |
163 | FF_WU_CFG_ZHIE = 0x20, | |
164 | FF_WU_CFG_LIR = 0x40, | |
165 | FF_WU_CFG_AOI = 0x80, | |
166 | }; | |
167 | ||
168 | enum lis3lv02d_ff_wu_src { | |
169 | FF_WU_SRC_XL = 0x01, | |
170 | FF_WU_SRC_XH = 0x02, | |
171 | FF_WU_SRC_YL = 0x04, | |
172 | FF_WU_SRC_YH = 0x08, | |
173 | FF_WU_SRC_ZL = 0x10, | |
174 | FF_WU_SRC_ZH = 0x20, | |
175 | FF_WU_SRC_IA = 0x40, | |
176 | }; | |
177 | ||
178 | enum lis3lv02d_dd_cfg { | |
179 | DD_CFG_XLIE = 0x01, | |
180 | DD_CFG_XHIE = 0x02, | |
181 | DD_CFG_YLIE = 0x04, | |
182 | DD_CFG_YHIE = 0x08, | |
183 | DD_CFG_ZLIE = 0x10, | |
184 | DD_CFG_ZHIE = 0x20, | |
185 | DD_CFG_LIR = 0x40, | |
186 | DD_CFG_IEND = 0x80, | |
187 | }; | |
188 | ||
189 | enum lis3lv02d_dd_src { | |
190 | DD_SRC_XL = 0x01, | |
191 | DD_SRC_XH = 0x02, | |
192 | DD_SRC_YL = 0x04, | |
193 | DD_SRC_YH = 0x08, | |
194 | DD_SRC_ZL = 0x10, | |
195 | DD_SRC_ZH = 0x20, | |
196 | DD_SRC_IA = 0x40, | |
197 | }; | |
198 | ||
cfce41a6 EP |
199 | struct axis_conversion { |
200 | s8 x; | |
201 | s8 y; | |
202 | s8 z; | |
203 | }; | |
204 | ||
a38da2ed DM |
205 | struct lis3lv02d { |
206 | void *bus_priv; /* used by the bus layer only */ | |
207 | int (*init) (struct lis3lv02d *lis3); | |
208 | int (*write) (struct lis3lv02d *lis3, int reg, u8 val); | |
209 | int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret); | |
cfce41a6 | 210 | |
a253aaef SO |
211 | int *odrs; /* Supported output data rates */ |
212 | u8 odr_mask; /* ODR bit mask */ | |
bc62c147 | 213 | u8 whoami; /* indicates measurement precision */ |
a38da2ed | 214 | s16 (*read_data) (struct lis3lv02d *lis3, int reg); |
137bad32 | 215 | int mdps_max_val; |
641615ab | 216 | int pwron_delay; |
32496c76 SO |
217 | int scale; /* |
218 | * relationship between 1 LBS and mG | |
219 | * (1/1000th of earth gravity) | |
220 | */ | |
137bad32 | 221 | |
dc6ea97b | 222 | struct input_polled_dev *idev; /* input device */ |
cfce41a6 EP |
223 | struct platform_device *pdev; /* platform device */ |
224 | atomic_t count; /* interrupt count after last read */ | |
cfce41a6 | 225 | struct axis_conversion ac; /* hw -> logical axis */ |
ef2cfc79 PM |
226 | |
227 | u32 irq; /* IRQ number */ | |
228 | struct fasync_struct *async_queue; /* queue for the misc device */ | |
229 | wait_queue_head_t misc_wait; /* Wait queue for the misc device */ | |
230 | unsigned long misc_opened; /* bit0: whether the device is open */ | |
8f3128e7 DM |
231 | |
232 | struct lis3lv02d_platform_data *pdata; /* for passing board config */ | |
2db4a76d | 233 | struct mutex mutex; /* Serialize poll and selftest */ |
cfce41a6 EP |
234 | }; |
235 | ||
a38da2ed | 236 | int lis3lv02d_init_device(struct lis3lv02d *lis3); |
cfce41a6 EP |
237 | int lis3lv02d_joystick_enable(void); |
238 | void lis3lv02d_joystick_disable(void); | |
a38da2ed DM |
239 | void lis3lv02d_poweroff(struct lis3lv02d *lis3); |
240 | void lis3lv02d_poweron(struct lis3lv02d *lis3); | |
a002ee89 | 241 | int lis3lv02d_remove_fs(struct lis3lv02d *lis3); |
cfce41a6 | 242 | |
a38da2ed | 243 | extern struct lis3lv02d lis3_dev; |