/* * 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> #include <linux/regulator/consumer.h> #include <linux/miscdevice.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, CTRL_REG4 = 0x23, 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_3DC = 0x33, /* 8 bits: LIS3DC, HP3DC */ 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_ctrl1_3dc { CTRL1_ODR0 = 0x10, CTRL1_ODR1 = 0x20, CTRL1_ODR2 = 0x40, CTRL1_ODR3 = 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_ctrl4_3dc { CTRL4_SIM = 0x01, CTRL4_ST0 = 0x02, CTRL4_ST1 = 0x04, CTRL4_FS0 = 0x10, CTRL4_FS1 = 0x20, }; enum lis302d_ctrl2 { HP_FF_WU2 = 0x08, HP_FF_WU1 = 0x04, CTRL2_BOOT_8B = 0x40, }; 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, }; enum lis3lv02d_click_src_8b { CLICK_SINGLE_X = 0x01, CLICK_DOUBLE_X = 0x02, CLICK_SINGLE_Y = 0x04, CLICK_DOUBLE_Y = 0x08, CLICK_SINGLE_Z = 0x10, CLICK_DOUBLE_Z = 0x20, CLICK_IA = 0x40, }; enum lis3lv02d_reg_state { LIS3_REG_OFF = 0x00, LIS3_REG_ON = 0x01, }; union axis_conversion { struct { int x, y, z; }; int as_array[3]; }; struct lis3lv02d { void *bus_priv; /* used by the bus layer only */ struct device *pm_dev; /* for pm_runtime purposes */ int (*init) (struct lis3lv02d *lis3); int (*write) (struct lis3lv02d *lis3, int reg, u8 val); int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret); int (*blkread) (struct lis3lv02d *lis3, int reg, int len, u8 *ret); int (*reg_ctrl) (struct lis3lv02d *lis3, bool state); int *odrs; /* Supported output data rates */ u8 *regs; /* Regs to store / restore */ int regs_size; u8 *reg_cache; bool regs_stored; 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 */ struct regulator_bulk_data regulators[2]; atomic_t count; /* interrupt count after last read */ union axis_conversion ac; /* hw -> logical axis */ int mapped_btns[3]; 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 miscdevice miscdev; int data_ready_count[2]; atomic_t wake_thread; unsigned char irq_cfg; 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(struct lis3lv02d *lis3); void lis3lv02d_joystick_disable(struct lis3lv02d *lis3); void lis3lv02d_poweroff(struct lis3lv02d *lis3); int lis3lv02d_poweron(struct lis3lv02d *lis3); int lis3lv02d_remove_fs(struct lis3lv02d *lis3); extern struct lis3lv02d lis3_dev;