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