2 * lis3lv02d.h - ST LIS3LV02DL accelerometer driver
4 * Copyright (C) 2007-2008 Yan Burman
5 * Copyright (C) 2008-2009 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
21 #include <linux/platform_device.h>
22 #include <linux/input-polldev.h>
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.
35 #include <linux/lis3lv02d.h>
48 HP_FILTER_RESET = 0x23,
65 FF_WU_DURATION_1 = 0x33,
69 FF_WU_DURATION_2 = 0x37,
74 CLICK_TIMELIMIT = 0x3D,
85 FF_WU_DURATION = 0x36,
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 */
101 enum lis3lv02d_ctrl1 {
111 enum lis3lv02d_ctrl2 {
118 CTRL2_BDU = 0x40, /* Block Data Update */
119 CTRL2_FS = 0x80, /* Full Scale selection */
127 enum lis3lv02d_ctrl3 {
136 enum lis3lv02d_status_reg {
147 enum lis3lv02d_ff_wu_cfg {
148 FF_WU_CFG_XLIE = 0x01,
149 FF_WU_CFG_XHIE = 0x02,
150 FF_WU_CFG_YLIE = 0x04,
151 FF_WU_CFG_YHIE = 0x08,
152 FF_WU_CFG_ZLIE = 0x10,
153 FF_WU_CFG_ZHIE = 0x20,
154 FF_WU_CFG_LIR = 0x40,
155 FF_WU_CFG_AOI = 0x80,
158 enum lis3lv02d_ff_wu_src {
168 enum lis3lv02d_dd_cfg {
179 enum lis3lv02d_dd_src {
189 struct axis_conversion {
196 void *bus_priv; /* used by the bus layer only */
197 int (*init) (struct lis3lv02d *lis3);
198 int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
199 int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
201 u8 whoami; /* indicates measurement precision */
202 s16 (*read_data) (struct lis3lv02d *lis3, int reg);
205 struct input_polled_dev *idev; /* input device */
206 struct platform_device *pdev; /* platform device */
207 atomic_t count; /* interrupt count after last read */
208 int xcalib; /* calibrated null value for x */
209 int ycalib; /* calibrated null value for y */
210 int zcalib; /* calibrated null value for z */
211 struct axis_conversion ac; /* hw -> logical axis */
213 u32 irq; /* IRQ number */
214 struct fasync_struct *async_queue; /* queue for the misc device */
215 wait_queue_head_t misc_wait; /* Wait queue for the misc device */
216 unsigned long misc_opened; /* bit0: whether the device is open */
218 struct lis3lv02d_platform_data *pdata; /* for passing board config */
221 int lis3lv02d_init_device(struct lis3lv02d *lis3);
222 int lis3lv02d_joystick_enable(void);
223 void lis3lv02d_joystick_disable(void);
224 void lis3lv02d_poweroff(struct lis3lv02d *lis3);
225 void lis3lv02d_poweron(struct lis3lv02d *lis3);
226 int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
228 extern struct lis3lv02d lis3_dev;