2 * lis3lv02d.h - ST LIS3LV02DL accelerometer driver
4 * Copyright (C) 2007-2008 Yan Burman
5 * Copyright (C) 2008 Eric Piel
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.
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.
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
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
25 * LIS3L02DQ) and they have slightly different registers, but we can provide a
26 * common interface for all of them.
27 * They can also be connected via I²C.
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 */
46 HP_FILTER_RESET = 0x23,
62 FF_WU_DURATION = 0x36,
72 enum lis3lv02d_ctrl1 {
82 enum lis3lv02d_ctrl2 {
89 CTRL2_BDU = 0x40, /* Block Data Update */
90 CTRL2_FS = 0x80, /* Full Scale selection */
94 enum lis3lv02d_ctrl3 {
103 enum lis3lv02d_status_reg {
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,
125 enum lis3lv02d_ff_wu_src {
135 enum lis3lv02d_dd_cfg {
146 enum lis3lv02d_dd_src {
156 struct axis_conversion {
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);
168 u8 whoami; /* 3Ah: 2-byte registries, 3Bh: 1-byte registries */
169 s16 (*read_data) (struct lis3lv02d *lis3, int reg);
172 struct input_dev *idev; /* input device */
173 struct task_struct *kthread; /* kthread for input */
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 */
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 */
190 int lis3lv02d_init_device(struct lis3lv02d *lis3);
191 int lis3lv02d_joystick_enable(void);
192 void lis3lv02d_joystick_disable(void);
193 void lis3lv02d_poweroff(struct lis3lv02d *lis3);
194 void lis3lv02d_poweron(struct lis3lv02d *lis3);
195 int lis3lv02d_remove_fs(void);
197 extern struct lis3lv02d lis3_dev;