/* * lis3lv02d.h - ST LIS3LV02DL accelerometer driver * * Copyright (C) 2007-2008 Yan Burman * Copyright (C) 2008 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> /* * The actual chip is STMicroelectronics LIS3LV02DL or LIS3LV02DQ that seems to * be connected via SPI. There exists also several similar chips (such as LIS302DL or * LIS3L02DQ) and they have slightly different registers, but we can provide a * common interface for all of them. * They can also be connected via I²C. */ #include <linux/lis3lv02d.h> /* 2-byte registers */ #define LIS_DOUBLE_ID 0x3A /* LIS3LV02D[LQ] */ /* 1-byte registers */ #define LIS_SINGLE_ID 0x3B /* LIS[32]02DL and others */ 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, 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, }; enum lis302d_reg { 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 { 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 lis3lv02d_ctrl1 { CTRL1_Xen = 0x01, CTRL1_Yen = 0x02, CTRL1_Zen = 0x04, CTRL1_ST = 0x08, CTRL1_DF0 = 0x10, CTRL1_DF1 = 0x20, CTRL1_PD0 = 0x40, CTRL1_PD1 = 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 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); u8 whoami; /* 3Ah: 2-byte registries, 3Bh: 1-byte registries */ s16 (*read_data) (struct lis3lv02d *lis3, int reg); int mdps_max_val; struct input_polled_dev *idev; /* input device */ struct platform_device *pdev; /* platform device */ atomic_t count; /* interrupt count after last read */ int xcalib; /* calibrated null value for x */ int ycalib; /* calibrated null value for y */ int zcalib; /* calibrated null value for z */ 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 */ }; 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;