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
21 #include <linux/platform_device.h>
22 #include <linux/input-polldev.h>
25 * The actual chip is STMicroelectronics LIS3LV02DL or LIS3LV02DQ that seems to
26 * be connected via SPI. There exists also several similar chips (such as LIS302DL or
27 * LIS3L02DQ) and they have slightly different registers, but we can provide a
28 * common interface for all of them.
29 * They can also be connected via I²C.
32 #include <linux/lis3lv02d.h>
34 /* 2-byte registers */
35 #define LIS_DOUBLE_ID 0x3A /* LIS3LV02D[LQ] */
36 /* 1-byte registers */
37 #define LIS_SINGLE_ID 0x3B /* LIS[32]02DL and others */
50 HP_FILTER_RESET = 0x23,
67 FF_WU_DURATION_1 = 0x33,
71 FF_WU_DURATION_2 = 0x37,
76 CLICK_TIMELIMIT = 0x3D,
87 FF_WU_DURATION = 0x36,
97 enum lis3lv02d_ctrl1 {
107 enum lis3lv02d_ctrl2 {
114 CTRL2_BDU = 0x40, /* Block Data Update */
115 CTRL2_FS = 0x80, /* Full Scale selection */
123 enum lis3lv02d_ctrl3 {
132 enum lis3lv02d_status_reg {
143 enum lis3lv02d_ff_wu_cfg {
144 FF_WU_CFG_XLIE = 0x01,
145 FF_WU_CFG_XHIE = 0x02,
146 FF_WU_CFG_YLIE = 0x04,
147 FF_WU_CFG_YHIE = 0x08,
148 FF_WU_CFG_ZLIE = 0x10,
149 FF_WU_CFG_ZHIE = 0x20,
150 FF_WU_CFG_LIR = 0x40,
151 FF_WU_CFG_AOI = 0x80,
154 enum lis3lv02d_ff_wu_src {
164 enum lis3lv02d_dd_cfg {
175 enum lis3lv02d_dd_src {
185 struct axis_conversion {
192 void *bus_priv; /* used by the bus layer only */
193 int (*init) (struct lis3lv02d *lis3);
194 int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
195 int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
197 u8 whoami; /* 3Ah: 2-byte registries, 3Bh: 1-byte registries */
198 s16 (*read_data) (struct lis3lv02d *lis3, int reg);
201 struct input_polled_dev *idev; /* input device */
202 struct platform_device *pdev; /* platform device */
203 atomic_t count; /* interrupt count after last read */
204 int xcalib; /* calibrated null value for x */
205 int ycalib; /* calibrated null value for y */
206 int zcalib; /* calibrated null value for z */
207 struct axis_conversion ac; /* hw -> logical axis */
209 u32 irq; /* IRQ number */
210 struct fasync_struct *async_queue; /* queue for the misc device */
211 wait_queue_head_t misc_wait; /* Wait queue for the misc device */
212 unsigned long misc_opened; /* bit0: whether the device is open */
214 struct lis3lv02d_platform_data *pdata; /* for passing board config */
217 int lis3lv02d_init_device(struct lis3lv02d *lis3);
218 int lis3lv02d_joystick_enable(void);
219 void lis3lv02d_joystick_disable(void);
220 void lis3lv02d_poweroff(struct lis3lv02d *lis3);
221 void lis3lv02d_poweron(struct lis3lv02d *lis3);
222 int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
224 extern struct lis3lv02d lis3_dev;