196 lines
4.8 KiB
C
196 lines
4.8 KiB
C
/*
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* lis3lv02d.h - ST LIS3LV02DL accelerometer driver
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*
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* Copyright (C) 2007-2008 Yan Burman
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* Copyright (C) 2008 Eric Piel
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/platform_device.h>
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#include <linux/input-polldev.h>
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/*
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* The actual chip is STMicroelectronics LIS3LV02DL or LIS3LV02DQ that seems to
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* be connected via SPI. There exists also several similar chips (such as LIS302DL or
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* LIS3L02DQ) and they have slightly different registers, but we can provide a
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* common interface for all of them.
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* They can also be connected via I²C.
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*/
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/* 2-byte registers */
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#define LIS_DOUBLE_ID 0x3A /* LIS3LV02D[LQ] */
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/* 1-byte registers */
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#define LIS_SINGLE_ID 0x3B /* LIS[32]02DL and others */
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enum lis3lv02d_reg {
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WHO_AM_I = 0x0F,
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OFFSET_X = 0x16,
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OFFSET_Y = 0x17,
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OFFSET_Z = 0x18,
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GAIN_X = 0x19,
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GAIN_Y = 0x1A,
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GAIN_Z = 0x1B,
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CTRL_REG1 = 0x20,
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CTRL_REG2 = 0x21,
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CTRL_REG3 = 0x22,
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HP_FILTER_RESET = 0x23,
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STATUS_REG = 0x27,
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OUTX_L = 0x28,
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OUTX_H = 0x29,
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OUTX = 0x29,
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OUTY_L = 0x2A,
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OUTY_H = 0x2B,
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OUTY = 0x2B,
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OUTZ_L = 0x2C,
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OUTZ_H = 0x2D,
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OUTZ = 0x2D,
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FF_WU_CFG = 0x30,
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FF_WU_SRC = 0x31,
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FF_WU_ACK = 0x32,
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FF_WU_THS_L = 0x34,
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FF_WU_THS_H = 0x35,
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FF_WU_DURATION = 0x36,
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DD_CFG = 0x38,
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DD_SRC = 0x39,
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DD_ACK = 0x3A,
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DD_THSI_L = 0x3C,
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DD_THSI_H = 0x3D,
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DD_THSE_L = 0x3E,
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DD_THSE_H = 0x3F,
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};
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enum lis3lv02d_ctrl1 {
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CTRL1_Xen = 0x01,
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CTRL1_Yen = 0x02,
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CTRL1_Zen = 0x04,
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CTRL1_ST = 0x08,
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CTRL1_DF0 = 0x10,
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CTRL1_DF1 = 0x20,
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CTRL1_PD0 = 0x40,
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CTRL1_PD1 = 0x80,
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};
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enum lis3lv02d_ctrl2 {
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CTRL2_DAS = 0x01,
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CTRL2_SIM = 0x02,
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CTRL2_DRDY = 0x04,
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CTRL2_IEN = 0x08,
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CTRL2_BOOT = 0x10,
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CTRL2_BLE = 0x20,
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CTRL2_BDU = 0x40, /* Block Data Update */
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CTRL2_FS = 0x80, /* Full Scale selection */
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};
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enum lis3lv02d_ctrl3 {
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CTRL3_CFS0 = 0x01,
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CTRL3_CFS1 = 0x02,
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CTRL3_FDS = 0x10,
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CTRL3_HPFF = 0x20,
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CTRL3_HPDD = 0x40,
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CTRL3_ECK = 0x80,
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};
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enum lis3lv02d_status_reg {
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STATUS_XDA = 0x01,
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STATUS_YDA = 0x02,
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STATUS_ZDA = 0x04,
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STATUS_XYZDA = 0x08,
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STATUS_XOR = 0x10,
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STATUS_YOR = 0x20,
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STATUS_ZOR = 0x40,
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STATUS_XYZOR = 0x80,
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};
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enum lis3lv02d_ff_wu_cfg {
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FF_WU_CFG_XLIE = 0x01,
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FF_WU_CFG_XHIE = 0x02,
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FF_WU_CFG_YLIE = 0x04,
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FF_WU_CFG_YHIE = 0x08,
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FF_WU_CFG_ZLIE = 0x10,
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FF_WU_CFG_ZHIE = 0x20,
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FF_WU_CFG_LIR = 0x40,
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FF_WU_CFG_AOI = 0x80,
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};
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enum lis3lv02d_ff_wu_src {
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FF_WU_SRC_XL = 0x01,
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FF_WU_SRC_XH = 0x02,
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FF_WU_SRC_YL = 0x04,
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FF_WU_SRC_YH = 0x08,
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FF_WU_SRC_ZL = 0x10,
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FF_WU_SRC_ZH = 0x20,
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FF_WU_SRC_IA = 0x40,
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};
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enum lis3lv02d_dd_cfg {
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DD_CFG_XLIE = 0x01,
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DD_CFG_XHIE = 0x02,
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DD_CFG_YLIE = 0x04,
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DD_CFG_YHIE = 0x08,
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DD_CFG_ZLIE = 0x10,
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DD_CFG_ZHIE = 0x20,
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DD_CFG_LIR = 0x40,
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DD_CFG_IEND = 0x80,
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};
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enum lis3lv02d_dd_src {
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DD_SRC_XL = 0x01,
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DD_SRC_XH = 0x02,
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DD_SRC_YL = 0x04,
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DD_SRC_YH = 0x08,
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DD_SRC_ZL = 0x10,
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DD_SRC_ZH = 0x20,
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DD_SRC_IA = 0x40,
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};
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struct axis_conversion {
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s8 x;
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s8 y;
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s8 z;
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};
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struct lis3lv02d {
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void *bus_priv; /* used by the bus layer only */
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int (*init) (struct lis3lv02d *lis3);
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int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
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int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
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u8 whoami; /* 3Ah: 2-byte registries, 3Bh: 1-byte registries */
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s16 (*read_data) (struct lis3lv02d *lis3, int reg);
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int mdps_max_val;
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struct input_polled_dev *idev; /* input device */
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struct platform_device *pdev; /* platform device */
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atomic_t count; /* interrupt count after last read */
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int xcalib; /* calibrated null value for x */
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int ycalib; /* calibrated null value for y */
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int zcalib; /* calibrated null value for z */
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struct axis_conversion ac; /* hw -> logical axis */
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u32 irq; /* IRQ number */
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struct fasync_struct *async_queue; /* queue for the misc device */
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wait_queue_head_t misc_wait; /* Wait queue for the misc device */
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unsigned long misc_opened; /* bit0: whether the device is open */
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};
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int lis3lv02d_init_device(struct lis3lv02d *lis3);
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int lis3lv02d_joystick_enable(void);
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void lis3lv02d_joystick_disable(void);
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void lis3lv02d_poweroff(struct lis3lv02d *lis3);
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void lis3lv02d_poweron(struct lis3lv02d *lis3);
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int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
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extern struct lis3lv02d lis3_dev;
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