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 /* 2-byte registers */
33 #define LIS_DOUBLE_ID 0x3A /* LIS3LV02D[LQ] */
34 /* 1-byte registers */
35 #define LIS_SINGLE_ID 0x3B /* LIS[32]02DL and others */
48 HP_FILTER_RESET
= 0x23,
64 FF_WU_DURATION
= 0x36,
74 enum lis3lv02d_ctrl1
{
84 enum lis3lv02d_ctrl2
{
91 CTRL2_BDU
= 0x40, /* Block Data Update */
92 CTRL2_FS
= 0x80, /* Full Scale selection */
96 enum lis3lv02d_ctrl3
{
105 enum lis3lv02d_status_reg
{
116 enum lis3lv02d_ff_wu_cfg
{
117 FF_WU_CFG_XLIE
= 0x01,
118 FF_WU_CFG_XHIE
= 0x02,
119 FF_WU_CFG_YLIE
= 0x04,
120 FF_WU_CFG_YHIE
= 0x08,
121 FF_WU_CFG_ZLIE
= 0x10,
122 FF_WU_CFG_ZHIE
= 0x20,
123 FF_WU_CFG_LIR
= 0x40,
124 FF_WU_CFG_AOI
= 0x80,
127 enum lis3lv02d_ff_wu_src
{
137 enum lis3lv02d_dd_cfg
{
148 enum lis3lv02d_dd_src
{
158 struct axis_conversion
{
165 void *bus_priv
; /* used by the bus layer only */
166 int (*init
) (struct lis3lv02d
*lis3
);
167 int (*write
) (struct lis3lv02d
*lis3
, int reg
, u8 val
);
168 int (*read
) (struct lis3lv02d
*lis3
, int reg
, u8
*ret
);
170 u8 whoami
; /* 3Ah: 2-byte registries, 3Bh: 1-byte registries */
171 s16 (*read_data
) (struct lis3lv02d
*lis3
, int reg
);
174 struct input_polled_dev
*idev
; /* input device */
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 struct axis_conversion ac
; /* hw -> logical axis */
182 u32 irq
; /* IRQ number */
183 struct fasync_struct
*async_queue
; /* queue for the misc device */
184 wait_queue_head_t misc_wait
; /* Wait queue for the misc device */
185 unsigned long misc_opened
; /* bit0: whether the device is open */
188 int lis3lv02d_init_device(struct lis3lv02d
*lis3
);
189 int lis3lv02d_joystick_enable(void);
190 void lis3lv02d_joystick_disable(void);
191 void lis3lv02d_poweroff(struct lis3lv02d
*lis3
);
192 void lis3lv02d_poweron(struct lis3lv02d
*lis3
);
193 int lis3lv02d_remove_fs(struct lis3lv02d
*lis3
);
195 extern struct lis3lv02d lis3_dev
;