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>
23 #include <linux/regulator/consumer.h>
24 #include <linux/miscdevice.h>
27 * This driver tries to support the "digital" accelerometer chips from
28 * STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL,
29 * LIS35DE, or LIS202DL. They are very similar in terms of programming, with
30 * almost the same registers. In addition to differing on physical properties,
31 * they differ on the number of axes (2/3), precision (8/12 bits), and special
32 * features (freefall detection, click...). Unfortunately, not all the
33 * differences can be probed via a register.
34 * They can be connected either via I²C or SPI.
37 #include <linux/lis3lv02d.h>
51 HP_FILTER_RESET = 0x23,
68 FF_WU_DURATION_1 = 0x33,
72 FF_WU_DURATION_2 = 0x37,
77 CLICK_TIMELIMIT = 0x3D,
88 FF_WU_DURATION = 0x36,
99 WAI_3DC = 0x33, /* 8 bits: LIS3DC, HP3DC */
100 WAI_12B = 0x3A, /* 12 bits: LIS3LV02D[LQ]... */
101 WAI_8B = 0x3B, /* 8 bits: LIS[23]02D[LQ]... */
102 WAI_6B = 0x52, /* 6 bits: LIS331DLF - not supported */
105 enum lis3lv02d_ctrl1_12b {
116 /* Delta to ctrl1_12b version */
117 enum lis3lv02d_ctrl1_8b {
125 enum lis3lv02d_ctrl1_3dc {
132 enum lis3lv02d_ctrl2 {
139 CTRL2_BDU = 0x40, /* Block Data Update */
140 CTRL2_FS = 0x80, /* Full Scale selection */
143 enum lis3lv02d_ctrl4_3dc {
154 CTRL2_BOOT_8B = 0x40,
157 enum lis3lv02d_ctrl3 {
166 enum lis3lv02d_status_reg {
177 enum lis3lv02d_ff_wu_cfg {
178 FF_WU_CFG_XLIE = 0x01,
179 FF_WU_CFG_XHIE = 0x02,
180 FF_WU_CFG_YLIE = 0x04,
181 FF_WU_CFG_YHIE = 0x08,
182 FF_WU_CFG_ZLIE = 0x10,
183 FF_WU_CFG_ZHIE = 0x20,
184 FF_WU_CFG_LIR = 0x40,
185 FF_WU_CFG_AOI = 0x80,
188 enum lis3lv02d_ff_wu_src {
198 enum lis3lv02d_dd_cfg {
209 enum lis3lv02d_dd_src {
219 enum lis3lv02d_click_src_8b {
220 CLICK_SINGLE_X = 0x01,
221 CLICK_DOUBLE_X = 0x02,
222 CLICK_SINGLE_Y = 0x04,
223 CLICK_DOUBLE_Y = 0x08,
224 CLICK_SINGLE_Z = 0x10,
225 CLICK_DOUBLE_Z = 0x20,
229 enum lis3lv02d_reg_state {
234 union axis_conversion {
243 void *bus_priv; /* used by the bus layer only */
244 struct device *pm_dev; /* for pm_runtime purposes */
245 int (*init) (struct lis3lv02d *lis3);
246 int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
247 int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
248 int (*blkread) (struct lis3lv02d *lis3, int reg, int len, u8 *ret);
249 int (*reg_ctrl) (struct lis3lv02d *lis3, bool state);
251 int *odrs; /* Supported output data rates */
252 u8 *regs; /* Regs to store / restore */
256 u8 odr_mask; /* ODR bit mask */
257 u8 whoami; /* indicates measurement precision */
258 s16 (*read_data) (struct lis3lv02d *lis3, int reg);
262 * relationship between 1 LBS and mG
263 * (1/1000th of earth gravity)
266 struct input_polled_dev *idev; /* input device */
267 struct platform_device *pdev; /* platform device */
268 struct regulator_bulk_data regulators[2];
269 atomic_t count; /* interrupt count after last read */
270 union axis_conversion ac; /* hw -> logical axis */
273 u32 irq; /* IRQ number */
274 struct fasync_struct *async_queue; /* queue for the misc device */
275 wait_queue_head_t misc_wait; /* Wait queue for the misc device */
276 unsigned long misc_opened; /* bit0: whether the device is open */
277 struct miscdevice miscdev;
279 int data_ready_count[2];
280 atomic_t wake_thread;
281 unsigned char irq_cfg;
283 struct lis3lv02d_platform_data *pdata; /* for passing board config */
284 struct mutex mutex; /* Serialize poll and selftest */
287 int lis3lv02d_init_device(struct lis3lv02d *lis3);
288 int lis3lv02d_joystick_enable(struct lis3lv02d *lis3);
289 void lis3lv02d_joystick_disable(struct lis3lv02d *lis3);
290 void lis3lv02d_poweroff(struct lis3lv02d *lis3);
291 int lis3lv02d_poweron(struct lis3lv02d *lis3);
292 int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
294 extern struct lis3lv02d lis3_dev;