You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
243 lines
5.9 KiB
243 lines
5.9 KiB
/*
|
|
* lis3lv02d.h - ST LIS3LV02DL accelerometer driver
|
|
*
|
|
* Copyright (C) 2007-2008 Yan Burman
|
|
* Copyright (C) 2008-2009 Eric Piel
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#include <linux/platform_device.h>
|
|
#include <linux/input-polldev.h>
|
|
|
|
/*
|
|
* This driver tries to support the "digital" accelerometer chips from
|
|
* STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL,
|
|
* LIS35DE, or LIS202DL. They are very similar in terms of programming, with
|
|
* almost the same registers. In addition to differing on physical properties,
|
|
* they differ on the number of axes (2/3), precision (8/12 bits), and special
|
|
* features (freefall detection, click...). Unfortunately, not all the
|
|
* differences can be probed via a register.
|
|
* They can be connected either via I²C or SPI.
|
|
*/
|
|
|
|
#include <linux/lis3lv02d.h>
|
|
|
|
enum lis3_reg {
|
|
WHO_AM_I = 0x0F,
|
|
OFFSET_X = 0x16,
|
|
OFFSET_Y = 0x17,
|
|
OFFSET_Z = 0x18,
|
|
GAIN_X = 0x19,
|
|
GAIN_Y = 0x1A,
|
|
GAIN_Z = 0x1B,
|
|
CTRL_REG1 = 0x20,
|
|
CTRL_REG2 = 0x21,
|
|
CTRL_REG3 = 0x22,
|
|
HP_FILTER_RESET = 0x23,
|
|
STATUS_REG = 0x27,
|
|
OUTX_L = 0x28,
|
|
OUTX_H = 0x29,
|
|
OUTX = 0x29,
|
|
OUTY_L = 0x2A,
|
|
OUTY_H = 0x2B,
|
|
OUTY = 0x2B,
|
|
OUTZ_L = 0x2C,
|
|
OUTZ_H = 0x2D,
|
|
OUTZ = 0x2D,
|
|
};
|
|
|
|
enum lis302d_reg {
|
|
FF_WU_CFG_1 = 0x30,
|
|
FF_WU_SRC_1 = 0x31,
|
|
FF_WU_THS_1 = 0x32,
|
|
FF_WU_DURATION_1 = 0x33,
|
|
FF_WU_CFG_2 = 0x34,
|
|
FF_WU_SRC_2 = 0x35,
|
|
FF_WU_THS_2 = 0x36,
|
|
FF_WU_DURATION_2 = 0x37,
|
|
CLICK_CFG = 0x38,
|
|
CLICK_SRC = 0x39,
|
|
CLICK_THSY_X = 0x3B,
|
|
CLICK_THSZ = 0x3C,
|
|
CLICK_TIMELIMIT = 0x3D,
|
|
CLICK_LATENCY = 0x3E,
|
|
CLICK_WINDOW = 0x3F,
|
|
};
|
|
|
|
enum lis3lv02d_reg {
|
|
FF_WU_CFG = 0x30,
|
|
FF_WU_SRC = 0x31,
|
|
FF_WU_ACK = 0x32,
|
|
FF_WU_THS_L = 0x34,
|
|
FF_WU_THS_H = 0x35,
|
|
FF_WU_DURATION = 0x36,
|
|
DD_CFG = 0x38,
|
|
DD_SRC = 0x39,
|
|
DD_ACK = 0x3A,
|
|
DD_THSI_L = 0x3C,
|
|
DD_THSI_H = 0x3D,
|
|
DD_THSE_L = 0x3E,
|
|
DD_THSE_H = 0x3F,
|
|
};
|
|
|
|
enum lis3_who_am_i {
|
|
WAI_12B = 0x3A, /* 12 bits: LIS3LV02D[LQ]... */
|
|
WAI_8B = 0x3B, /* 8 bits: LIS[23]02D[LQ]... */
|
|
WAI_6B = 0x52, /* 6 bits: LIS331DLF - not supported */
|
|
};
|
|
|
|
enum lis3lv02d_ctrl1_12b {
|
|
CTRL1_Xen = 0x01,
|
|
CTRL1_Yen = 0x02,
|
|
CTRL1_Zen = 0x04,
|
|
CTRL1_ST = 0x08,
|
|
CTRL1_DF0 = 0x10,
|
|
CTRL1_DF1 = 0x20,
|
|
CTRL1_PD0 = 0x40,
|
|
CTRL1_PD1 = 0x80,
|
|
};
|
|
|
|
/* Delta to ctrl1_12b version */
|
|
enum lis3lv02d_ctrl1_8b {
|
|
CTRL1_STM = 0x08,
|
|
CTRL1_STP = 0x10,
|
|
CTRL1_FS = 0x20,
|
|
CTRL1_PD = 0x40,
|
|
CTRL1_DR = 0x80,
|
|
};
|
|
|
|
enum lis3lv02d_ctrl2 {
|
|
CTRL2_DAS = 0x01,
|
|
CTRL2_SIM = 0x02,
|
|
CTRL2_DRDY = 0x04,
|
|
CTRL2_IEN = 0x08,
|
|
CTRL2_BOOT = 0x10,
|
|
CTRL2_BLE = 0x20,
|
|
CTRL2_BDU = 0x40, /* Block Data Update */
|
|
CTRL2_FS = 0x80, /* Full Scale selection */
|
|
};
|
|
|
|
enum lis302d_ctrl2 {
|
|
HP_FF_WU2 = 0x08,
|
|
HP_FF_WU1 = 0x04,
|
|
};
|
|
|
|
enum lis3lv02d_ctrl3 {
|
|
CTRL3_CFS0 = 0x01,
|
|
CTRL3_CFS1 = 0x02,
|
|
CTRL3_FDS = 0x10,
|
|
CTRL3_HPFF = 0x20,
|
|
CTRL3_HPDD = 0x40,
|
|
CTRL3_ECK = 0x80,
|
|
};
|
|
|
|
enum lis3lv02d_status_reg {
|
|
STATUS_XDA = 0x01,
|
|
STATUS_YDA = 0x02,
|
|
STATUS_ZDA = 0x04,
|
|
STATUS_XYZDA = 0x08,
|
|
STATUS_XOR = 0x10,
|
|
STATUS_YOR = 0x20,
|
|
STATUS_ZOR = 0x40,
|
|
STATUS_XYZOR = 0x80,
|
|
};
|
|
|
|
enum lis3lv02d_ff_wu_cfg {
|
|
FF_WU_CFG_XLIE = 0x01,
|
|
FF_WU_CFG_XHIE = 0x02,
|
|
FF_WU_CFG_YLIE = 0x04,
|
|
FF_WU_CFG_YHIE = 0x08,
|
|
FF_WU_CFG_ZLIE = 0x10,
|
|
FF_WU_CFG_ZHIE = 0x20,
|
|
FF_WU_CFG_LIR = 0x40,
|
|
FF_WU_CFG_AOI = 0x80,
|
|
};
|
|
|
|
enum lis3lv02d_ff_wu_src {
|
|
FF_WU_SRC_XL = 0x01,
|
|
FF_WU_SRC_XH = 0x02,
|
|
FF_WU_SRC_YL = 0x04,
|
|
FF_WU_SRC_YH = 0x08,
|
|
FF_WU_SRC_ZL = 0x10,
|
|
FF_WU_SRC_ZH = 0x20,
|
|
FF_WU_SRC_IA = 0x40,
|
|
};
|
|
|
|
enum lis3lv02d_dd_cfg {
|
|
DD_CFG_XLIE = 0x01,
|
|
DD_CFG_XHIE = 0x02,
|
|
DD_CFG_YLIE = 0x04,
|
|
DD_CFG_YHIE = 0x08,
|
|
DD_CFG_ZLIE = 0x10,
|
|
DD_CFG_ZHIE = 0x20,
|
|
DD_CFG_LIR = 0x40,
|
|
DD_CFG_IEND = 0x80,
|
|
};
|
|
|
|
enum lis3lv02d_dd_src {
|
|
DD_SRC_XL = 0x01,
|
|
DD_SRC_XH = 0x02,
|
|
DD_SRC_YL = 0x04,
|
|
DD_SRC_YH = 0x08,
|
|
DD_SRC_ZL = 0x10,
|
|
DD_SRC_ZH = 0x20,
|
|
DD_SRC_IA = 0x40,
|
|
};
|
|
|
|
struct axis_conversion {
|
|
s8 x;
|
|
s8 y;
|
|
s8 z;
|
|
};
|
|
|
|
struct lis3lv02d {
|
|
void *bus_priv; /* used by the bus layer only */
|
|
int (*init) (struct lis3lv02d *lis3);
|
|
int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
|
|
int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
|
|
|
|
int *odrs; /* Supported output data rates */
|
|
u8 odr_mask; /* ODR bit mask */
|
|
u8 whoami; /* indicates measurement precision */
|
|
s16 (*read_data) (struct lis3lv02d *lis3, int reg);
|
|
int mdps_max_val;
|
|
int pwron_delay;
|
|
int scale; /*
|
|
* relationship between 1 LBS and mG
|
|
* (1/1000th of earth gravity)
|
|
*/
|
|
|
|
struct input_polled_dev *idev; /* input device */
|
|
struct platform_device *pdev; /* platform device */
|
|
atomic_t count; /* interrupt count after last read */
|
|
struct axis_conversion ac; /* hw -> logical axis */
|
|
|
|
u32 irq; /* IRQ number */
|
|
struct fasync_struct *async_queue; /* queue for the misc device */
|
|
wait_queue_head_t misc_wait; /* Wait queue for the misc device */
|
|
unsigned long misc_opened; /* bit0: whether the device is open */
|
|
|
|
struct lis3lv02d_platform_data *pdata; /* for passing board config */
|
|
struct mutex mutex; /* Serialize poll and selftest */
|
|
};
|
|
|
|
int lis3lv02d_init_device(struct lis3lv02d *lis3);
|
|
int lis3lv02d_joystick_enable(void);
|
|
void lis3lv02d_joystick_disable(void);
|
|
void lis3lv02d_poweroff(struct lis3lv02d *lis3);
|
|
void lis3lv02d_poweron(struct lis3lv02d *lis3);
|
|
int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
|
|
|
|
extern struct lis3lv02d lis3_dev;
|
|
|