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1 | /* |
2 | * lis3lv02d.h - ST LIS3LV02DL accelerometer driver | |
3 | * | |
4 | * Copyright (C) 2007-2008 Yan Burman | |
5 | * Copyright (C) 2008 Eric Piel | |
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 | */ | |
21 | ||
22 | /* | |
23 | * The actual chip is STMicroelectronics LIS3LV02DL or LIS3LV02DQ that seems to | |
24 | * be connected via SPI. There exists also several similar chips (such as LIS302DL or | |
137bad32 GB |
25 | * LIS3L02DQ) and they have slightly different registers, but we can provide a |
26 | * common interface for all of them. | |
cfce41a6 | 27 | * They can also be connected via I²C. |
455fbdd3 PM |
28 | */ |
29 | ||
137bad32 GB |
30 | /* 2-byte registers */ |
31 | #define LIS_DOUBLE_ID 0x3A /* LIS3LV02D[LQ] */ | |
32 | /* 1-byte registers */ | |
33 | #define LIS_SINGLE_ID 0x3B /* LIS[32]02DL and others */ | |
455fbdd3 PM |
34 | |
35 | enum lis3lv02d_reg { | |
36 | WHO_AM_I = 0x0F, | |
37 | OFFSET_X = 0x16, | |
38 | OFFSET_Y = 0x17, | |
39 | OFFSET_Z = 0x18, | |
40 | GAIN_X = 0x19, | |
41 | GAIN_Y = 0x1A, | |
42 | GAIN_Z = 0x1B, | |
43 | CTRL_REG1 = 0x20, | |
44 | CTRL_REG2 = 0x21, | |
45 | CTRL_REG3 = 0x22, | |
46 | HP_FILTER_RESET = 0x23, | |
47 | STATUS_REG = 0x27, | |
48 | OUTX_L = 0x28, | |
49 | OUTX_H = 0x29, | |
137bad32 | 50 | OUTX = 0x29, |
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51 | OUTY_L = 0x2A, |
52 | OUTY_H = 0x2B, | |
137bad32 | 53 | OUTY = 0x2B, |
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54 | OUTZ_L = 0x2C, |
55 | OUTZ_H = 0x2D, | |
137bad32 | 56 | OUTZ = 0x2D, |
455fbdd3 PM |
57 | FF_WU_CFG = 0x30, |
58 | FF_WU_SRC = 0x31, | |
59 | FF_WU_ACK = 0x32, | |
60 | FF_WU_THS_L = 0x34, | |
61 | FF_WU_THS_H = 0x35, | |
62 | FF_WU_DURATION = 0x36, | |
63 | DD_CFG = 0x38, | |
64 | DD_SRC = 0x39, | |
65 | DD_ACK = 0x3A, | |
66 | DD_THSI_L = 0x3C, | |
67 | DD_THSI_H = 0x3D, | |
68 | DD_THSE_L = 0x3E, | |
69 | DD_THSE_H = 0x3F, | |
70 | }; | |
71 | ||
72 | enum lis3lv02d_ctrl1 { | |
73 | CTRL1_Xen = 0x01, | |
74 | CTRL1_Yen = 0x02, | |
75 | CTRL1_Zen = 0x04, | |
76 | CTRL1_ST = 0x08, | |
77 | CTRL1_DF0 = 0x10, | |
78 | CTRL1_DF1 = 0x20, | |
79 | CTRL1_PD0 = 0x40, | |
80 | CTRL1_PD1 = 0x80, | |
81 | }; | |
82 | enum lis3lv02d_ctrl2 { | |
83 | CTRL2_DAS = 0x01, | |
84 | CTRL2_SIM = 0x02, | |
85 | CTRL2_DRDY = 0x04, | |
86 | CTRL2_IEN = 0x08, | |
87 | CTRL2_BOOT = 0x10, | |
88 | CTRL2_BLE = 0x20, | |
89 | CTRL2_BDU = 0x40, /* Block Data Update */ | |
90 | CTRL2_FS = 0x80, /* Full Scale selection */ | |
91 | }; | |
92 | ||
93 | ||
94 | enum lis3lv02d_ctrl3 { | |
95 | CTRL3_CFS0 = 0x01, | |
96 | CTRL3_CFS1 = 0x02, | |
97 | CTRL3_FDS = 0x10, | |
98 | CTRL3_HPFF = 0x20, | |
99 | CTRL3_HPDD = 0x40, | |
100 | CTRL3_ECK = 0x80, | |
101 | }; | |
102 | ||
103 | enum lis3lv02d_status_reg { | |
104 | STATUS_XDA = 0x01, | |
105 | STATUS_YDA = 0x02, | |
106 | STATUS_ZDA = 0x04, | |
107 | STATUS_XYZDA = 0x08, | |
108 | STATUS_XOR = 0x10, | |
109 | STATUS_YOR = 0x20, | |
110 | STATUS_ZOR = 0x40, | |
111 | STATUS_XYZOR = 0x80, | |
112 | }; | |
113 | ||
114 | enum lis3lv02d_ff_wu_cfg { | |
115 | FF_WU_CFG_XLIE = 0x01, | |
116 | FF_WU_CFG_XHIE = 0x02, | |
117 | FF_WU_CFG_YLIE = 0x04, | |
118 | FF_WU_CFG_YHIE = 0x08, | |
119 | FF_WU_CFG_ZLIE = 0x10, | |
120 | FF_WU_CFG_ZHIE = 0x20, | |
121 | FF_WU_CFG_LIR = 0x40, | |
122 | FF_WU_CFG_AOI = 0x80, | |
123 | }; | |
124 | ||
125 | enum lis3lv02d_ff_wu_src { | |
126 | FF_WU_SRC_XL = 0x01, | |
127 | FF_WU_SRC_XH = 0x02, | |
128 | FF_WU_SRC_YL = 0x04, | |
129 | FF_WU_SRC_YH = 0x08, | |
130 | FF_WU_SRC_ZL = 0x10, | |
131 | FF_WU_SRC_ZH = 0x20, | |
132 | FF_WU_SRC_IA = 0x40, | |
133 | }; | |
134 | ||
135 | enum lis3lv02d_dd_cfg { | |
136 | DD_CFG_XLIE = 0x01, | |
137 | DD_CFG_XHIE = 0x02, | |
138 | DD_CFG_YLIE = 0x04, | |
139 | DD_CFG_YHIE = 0x08, | |
140 | DD_CFG_ZLIE = 0x10, | |
141 | DD_CFG_ZHIE = 0x20, | |
142 | DD_CFG_LIR = 0x40, | |
143 | DD_CFG_IEND = 0x80, | |
144 | }; | |
145 | ||
146 | enum lis3lv02d_dd_src { | |
147 | DD_SRC_XL = 0x01, | |
148 | DD_SRC_XH = 0x02, | |
149 | DD_SRC_YL = 0x04, | |
150 | DD_SRC_YH = 0x08, | |
151 | DD_SRC_ZL = 0x10, | |
152 | DD_SRC_ZH = 0x20, | |
153 | DD_SRC_IA = 0x40, | |
154 | }; | |
155 | ||
cfce41a6 EP |
156 | struct axis_conversion { |
157 | s8 x; | |
158 | s8 y; | |
159 | s8 z; | |
160 | }; | |
161 | ||
a38da2ed DM |
162 | struct lis3lv02d { |
163 | void *bus_priv; /* used by the bus layer only */ | |
164 | int (*init) (struct lis3lv02d *lis3); | |
165 | int (*write) (struct lis3lv02d *lis3, int reg, u8 val); | |
166 | int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret); | |
cfce41a6 | 167 | |
137bad32 | 168 | u8 whoami; /* 3Ah: 2-byte registries, 3Bh: 1-byte registries */ |
a38da2ed | 169 | s16 (*read_data) (struct lis3lv02d *lis3, int reg); |
137bad32 GB |
170 | int mdps_max_val; |
171 | ||
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172 | struct input_dev *idev; /* input device */ |
173 | struct task_struct *kthread; /* kthread for input */ | |
174 | struct mutex lock; | |
175 | struct platform_device *pdev; /* platform device */ | |
176 | atomic_t count; /* interrupt count after last read */ | |
177 | int xcalib; /* calibrated null value for x */ | |
178 | int ycalib; /* calibrated null value for y */ | |
179 | int zcalib; /* calibrated null value for z */ | |
180 | unsigned char is_on; /* whether the device is on or off */ | |
181 | unsigned char usage; /* usage counter */ | |
182 | struct axis_conversion ac; /* hw -> logical axis */ | |
ef2cfc79 PM |
183 | |
184 | u32 irq; /* IRQ number */ | |
185 | struct fasync_struct *async_queue; /* queue for the misc device */ | |
186 | wait_queue_head_t misc_wait; /* Wait queue for the misc device */ | |
187 | unsigned long misc_opened; /* bit0: whether the device is open */ | |
cfce41a6 EP |
188 | }; |
189 | ||
a38da2ed | 190 | int lis3lv02d_init_device(struct lis3lv02d *lis3); |
cfce41a6 EP |
191 | int lis3lv02d_joystick_enable(void); |
192 | void lis3lv02d_joystick_disable(void); | |
a38da2ed DM |
193 | void lis3lv02d_poweroff(struct lis3lv02d *lis3); |
194 | void lis3lv02d_poweron(struct lis3lv02d *lis3); | |
cfce41a6 EP |
195 | int lis3lv02d_remove_fs(void); |
196 | ||
a38da2ed | 197 | extern struct lis3lv02d lis3_dev; |