/* BMA255 motion sensor driver * * * This software program is licensed subject to the GNU General Public License * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html * (C) Copyright 2011 Bosch Sensortec GmbH * All Rights Reserved */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "bma056.h" #include #define POWER_NONE_MACRO MT65XX_POWER_NONE /*----------------------------------------------------------------------------*/ #define I2C_DRIVERID_BMA255 255 /*----------------------------------------------------------------------------*/ //#define DEBUG 1 /*----------------------------------------------------------------------------*/ //#define CONFIG_BMA255_LOWPASS /*apply low pass filter on output*/ #define SW_CALIBRATION /*----------------------------------------------------------------------------*/ #define BMA255_AXIS_X 0 #define BMA255_AXIS_Y 1 #define BMA255_AXIS_Z 2 #define BMA255_AXES_NUM 3 #define BMA255_DATA_LEN 6 #define BMA255_DEV_NAME "BMA255" #define BMA255_MODE_NORMAL 0 #define BMA255_MODE_LOWPOWER 1 #define BMA255_MODE_SUSPEND 2 #define BMA255_ACC_X_LSB__POS 4 #define BMA255_ACC_X_LSB__LEN 4 #define BMA255_ACC_X_LSB__MSK 0xF0 //#define BMA255_ACC_X_LSB__REG BMA255_X_AXIS_LSB_REG #define BMA255_ACC_X_MSB__POS 0 #define BMA255_ACC_X_MSB__LEN 8 #define BMA255_ACC_X_MSB__MSK 0xFF //#define BMA255_ACC_X_MSB__REG BMA255_X_AXIS_MSB_REG #define BMA255_ACC_Y_LSB__POS 4 #define BMA255_ACC_Y_LSB__LEN 4 #define BMA255_ACC_Y_LSB__MSK 0xF0 //#define BMA255_ACC_Y_LSB__REG BMA255_Y_AXIS_LSB_REG #define BMA255_ACC_Y_MSB__POS 0 #define BMA255_ACC_Y_MSB__LEN 8 #define BMA255_ACC_Y_MSB__MSK 0xFF //#define BMA255_ACC_Y_MSB__REG BMA255_Y_AXIS_MSB_REG #define BMA255_ACC_Z_LSB__POS 4 #define BMA255_ACC_Z_LSB__LEN 4 #define BMA255_ACC_Z_LSB__MSK 0xF0 //#define BMA255_ACC_Z_LSB__REG BMA255_Z_AXIS_LSB_REG #define BMA255_ACC_Z_MSB__POS 0 #define BMA255_ACC_Z_MSB__LEN 8 #define BMA255_ACC_Z_MSB__MSK 0xFF //#define BMA255_ACC_Z_MSB__REG BMA255_Z_AXIS_MSB_REG #define BMA255_EN_LOW_POWER__POS 6 #define BMA255_EN_LOW_POWER__LEN 1 #define BMA255_EN_LOW_POWER__MSK 0x40 #define BMA255_EN_LOW_POWER__REG BMA255_REG_POWER_CTL #define BMA255_EN_SUSPEND__POS 7 #define BMA255_EN_SUSPEND__LEN 1 #define BMA255_EN_SUSPEND__MSK 0x80 #define BMA255_EN_SUSPEND__REG BMA255_REG_POWER_CTL #define BMA255_RANGE_SEL__POS 0 #define BMA255_RANGE_SEL__LEN 4 #define BMA255_RANGE_SEL__MSK 0x0F #define BMA255_RANGE_SEL__REG BMA255_REG_DATA_FORMAT #define BMA255_BANDWIDTH__POS 0 #define BMA255_BANDWIDTH__LEN 5 #define BMA255_BANDWIDTH__MSK 0x1F #define BMA255_BANDWIDTH__REG BMA255_REG_BW_RATE #define BMA255_GET_BITSLICE(regvar, bitname)\ ((regvar & bitname##__MSK) >> bitname##__POS) #define BMA255_SET_BITSLICE(regvar, bitname, val)\ ((regvar & ~bitname##__MSK) | ((val<addr; msgs[0].flags = 0; msgs[0].len =1; msgs[0].buf = &beg; msgs[1].addr = client->addr; msgs[1].flags = I2C_M_RD; msgs[1].len =len; msgs[1].buf = data; if (!client) { mutex_unlock(&bma_i2c_mutex); return -EINVAL; } else if (len > C_I2C_FIFO_SIZE) { GSE_ERR(" length %d exceeds %d\n", len, C_I2C_FIFO_SIZE); mutex_unlock(&bma_i2c_mutex); return -EINVAL; } err = i2c_transfer(client->adapter, msgs, sizeof(msgs)/sizeof(msgs[0])); if (err != 2) { GSE_ERR("i2c_transfer error: (%d %p %d) %d\n",addr, data, len, err); err = -EIO; } else { err = 0; } mutex_unlock(&bma_i2c_mutex); return err; } static int bma_i2c_write_block(struct i2c_client *client, u8 addr, u8 *data, u8 len) { /*because address also occupies one byte, the maximum length for write is 7 bytes*/ int err, idx, num; char buf[C_I2C_FIFO_SIZE]; err =0; mutex_lock(&bma_i2c_mutex); if (!client) { mutex_unlock(&bma_i2c_mutex); return -EINVAL; } else if (len >= C_I2C_FIFO_SIZE) { GSE_ERR(" length %d exceeds %d\n", len, C_I2C_FIFO_SIZE); mutex_unlock(&bma_i2c_mutex); return -EINVAL; } num = 0; buf[num++] = addr; for (idx = 0; idx < len; idx++) { buf[num++] = data[idx]; } err = i2c_master_send(client, buf, num); if (err < 0) { GSE_ERR("send command error!!\n"); mutex_unlock(&bma_i2c_mutex); return -EFAULT; } mutex_unlock(&bma_i2c_mutex); return err; } /*--------------------BMA255 power control function----------------------------------*/ static void BMA255_power(struct acc_hw *hw, unsigned int on) { static unsigned int power_on = 0; if(hw->power_id != POWER_NONE_MACRO) // have externel LDO { GSE_LOG("power %s\n", on ? "on" : "off"); if(power_on == on) // power status not change { GSE_LOG("ignore power control: %d\n", on); } else if(on) // power on { if(!hwPowerOn(hw->power_id, hw->power_vol, "BMA255")) { GSE_ERR("power on fails!!\n"); } } else // power off { if (!hwPowerDown(hw->power_id, "BMA255")) { GSE_ERR("power off fail!!\n"); } } } power_on = on; } /*----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------*/ static int BMA255_SetDataResolution(struct bma255_i2c_data *obj) { /*set g sensor dataresolution here*/ /*BMA255 only can set to 10-bit dataresolution, so do nothing in bma255 driver here*/ /*end of set dataresolution*/ /*we set measure range from -2g to +2g in BMA255_SetDataFormat(client, BMA255_RANGE_2G), and set 10-bit dataresolution BMA255_SetDataResolution()*/ /*so bma255_data_resolution[0] set value as {{ 3, 9}, 256} when declaration, and assign the value to obj->reso here*/ obj->reso = &bma255_data_resolution[0]; return 0; /*if you changed the measure range, for example call: BMA255_SetDataFormat(client, BMA255_RANGE_4G), you must set the right value to bma255_data_resolution*/ } /*----------------------------------------------------------------------------*/ static int BMA255_ReadData(struct i2c_client *client, s16 data[BMA255_AXES_NUM]) { u8 addr = BMA255_REG_DATAXLOW; u8 buf[BMA255_DATA_LEN] = {0}; int err = 0; if(NULL == client) { err = -EINVAL; } else if((err = bma_i2c_read_block(client, addr, buf, BMA255_DATA_LEN))<0) { GSE_ERR("error: %d\n", err); } else { /* Convert sensor raw data to 16-bit integer */ data[BMA255_AXIS_X] = BMA255_GET_BITSLICE(buf[0], BMA255_ACC_X_LSB) |(BMA255_GET_BITSLICE(buf[1], BMA255_ACC_X_MSB)<> (sizeof(short)*8-(BMA255_ACC_X_LSB__LEN + BMA255_ACC_X_MSB__LEN)); data[BMA255_AXIS_Y] = BMA255_GET_BITSLICE(buf[2], BMA255_ACC_Y_LSB) | (BMA255_GET_BITSLICE(buf[3], BMA255_ACC_Y_MSB)<> (sizeof(short)*8-(BMA255_ACC_Y_LSB__LEN + BMA255_ACC_Y_MSB__LEN)); data[BMA255_AXIS_Z] = BMA255_GET_BITSLICE(buf[4], BMA255_ACC_Z_LSB) | (BMA255_GET_BITSLICE(buf[5], BMA255_ACC_Z_MSB)<> (sizeof(short)*8-(BMA255_ACC_Z_LSB__LEN + BMA255_ACC_Z_MSB__LEN)); #ifdef CONFIG_BMA255_LOWPASS if(atomic_read(&priv->filter)) { if(atomic_read(&priv->fir_en) && !atomic_read(&priv->suspend)) { int idx, firlen = atomic_read(&priv->firlen); if(priv->fir.num < firlen) { priv->fir.raw[priv->fir.num][BMA255_AXIS_X] = data[BMA255_AXIS_X]; priv->fir.raw[priv->fir.num][BMA255_AXIS_Y] = data[BMA255_AXIS_Y]; priv->fir.raw[priv->fir.num][BMA255_AXIS_Z] = data[BMA255_AXIS_Z]; priv->fir.sum[BMA255_AXIS_X] += data[BMA255_AXIS_X]; priv->fir.sum[BMA255_AXIS_Y] += data[BMA255_AXIS_Y]; priv->fir.sum[BMA255_AXIS_Z] += data[BMA255_AXIS_Z]; if(atomic_read(&priv->trace) & BMA_TRC_FILTER) { GSE_LOG("add [%2d] [%5d %5d %5d] => [%5d %5d %5d]\n", priv->fir.num, priv->fir.raw[priv->fir.num][BMA255_AXIS_X], priv->fir.raw[priv->fir.num][BMA255_AXIS_Y], priv->fir.raw[priv->fir.num][BMA255_AXIS_Z], priv->fir.sum[BMA255_AXIS_X], priv->fir.sum[BMA255_AXIS_Y], priv->fir.sum[BMA255_AXIS_Z]); } priv->fir.num++; priv->fir.idx++; } else { idx = priv->fir.idx % firlen; priv->fir.sum[BMA255_AXIS_X] -= priv->fir.raw[idx][BMA255_AXIS_X]; priv->fir.sum[BMA255_AXIS_Y] -= priv->fir.raw[idx][BMA255_AXIS_Y]; priv->fir.sum[BMA255_AXIS_Z] -= priv->fir.raw[idx][BMA255_AXIS_Z]; priv->fir.raw[idx][BMA255_AXIS_X] = data[BMA255_AXIS_X]; priv->fir.raw[idx][BMA255_AXIS_Y] = data[BMA255_AXIS_Y]; priv->fir.raw[idx][BMA255_AXIS_Z] = data[BMA255_AXIS_Z]; priv->fir.sum[BMA255_AXIS_X] += data[BMA255_AXIS_X]; priv->fir.sum[BMA255_AXIS_Y] += data[BMA255_AXIS_Y]; priv->fir.sum[BMA255_AXIS_Z] += data[BMA255_AXIS_Z]; priv->fir.idx++; data[BMA255_AXIS_X] = priv->fir.sum[BMA255_AXIS_X]/firlen; data[BMA255_AXIS_Y] = priv->fir.sum[BMA255_AXIS_Y]/firlen; data[BMA255_AXIS_Z] = priv->fir.sum[BMA255_AXIS_Z]/firlen; if(atomic_read(&priv->trace) & BMA_TRC_FILTER) { GSE_LOG("add [%2d] [%5d %5d %5d] => [%5d %5d %5d] : [%5d %5d %5d]\n", idx, priv->fir.raw[idx][BMA255_AXIS_X], priv->fir.raw[idx][BMA255_AXIS_Y], priv->fir.raw[idx][BMA255_AXIS_Z], priv->fir.sum[BMA255_AXIS_X], priv->fir.sum[BMA255_AXIS_Y], priv->fir.sum[BMA255_AXIS_Z], data[BMA255_AXIS_X], data[BMA255_AXIS_Y], data[BMA255_AXIS_Z]); } } } } #endif } return err; } /*----------------------------------------------------------------------------*/ static int BMA255_ReadOffset(struct i2c_client *client, s8 ofs[BMA255_AXES_NUM]) { int err = 0; #ifdef SW_CALIBRATION ofs[0]=ofs[1]=ofs[2]=0x0; #else if((err = bma_i2c_read_block(client, BMA255_REG_OFSX, ofs, BMA255_AXES_NUM))<0) { GSE_ERR("error: %d\n", err); } #endif //printk("offesx=%x, y=%x, z=%x",ofs[0],ofs[1],ofs[2]); return err; } /*----------------------------------------------------------------------------*/ static int BMA255_ResetCalibration(struct i2c_client *client) { struct bma255_i2c_data *obj = i2c_get_clientdata(client); int err = 0; #ifdef SW_CALIBRATION #else u8 ofs[4]={0,0,0,0}; if((err = bma_i2c_write_block(client, BMA255_REG_OFSX, ofs, 4))<0) { GSE_ERR("error: %d\n", err); } #endif memset(obj->cali_sw, 0x00, sizeof(obj->cali_sw)); memset(obj->offset, 0x00, sizeof(obj->offset)); return err; } /*----------------------------------------------------------------------------*/ static int BMA255_ReadCalibration(struct i2c_client *client, int dat[BMA255_AXES_NUM]) { struct bma255_i2c_data *obj = i2c_get_clientdata(client); int err = 0; int mul; #ifdef SW_CALIBRATION mul = 0;//only SW Calibration, disable HW Calibration #else if ((err = BMA255_ReadOffset(client, obj->offset))) { GSE_ERR("read offset fail, %d\n", err); return err; } mul = obj->reso->sensitivity/bma255_offset_resolution.sensitivity; #endif dat[obj->cvt.map[BMA255_AXIS_X]] = obj->cvt.sign[BMA255_AXIS_X]*(obj->offset[BMA255_AXIS_X]*mul*GRAVITY_EARTH_1000/(obj->reso->sensitivity) + obj->cali_sw[BMA255_AXIS_X]); dat[obj->cvt.map[BMA255_AXIS_Y]] = obj->cvt.sign[BMA255_AXIS_Y]*(obj->offset[BMA255_AXIS_Y]*mul*GRAVITY_EARTH_1000/(obj->reso->sensitivity) + obj->cali_sw[BMA255_AXIS_Y]); dat[obj->cvt.map[BMA255_AXIS_Z]] = obj->cvt.sign[BMA255_AXIS_Z]*(obj->offset[BMA255_AXIS_Z]*mul*GRAVITY_EARTH_1000/(obj->reso->sensitivity) + obj->cali_sw[BMA255_AXIS_Z]); return err; } /*----------------------------------------------------------------------------*/ static int BMA255_ReadCalibrationEx(struct i2c_client *client, int act[BMA255_AXES_NUM], int raw[BMA255_AXES_NUM]) { /*raw: the raw calibration data; act: the actual calibration data*/ struct bma255_i2c_data *obj = i2c_get_clientdata(client); //int err; int mul; #ifdef SW_CALIBRATION mul = 0;//only SW Calibration, disable HW Calibration #else if(err = BMA255_ReadOffset(client, obj->offset)) { GSE_ERR("read offset fail, %d\n", err); return err; } mul = obj->reso->sensitivity/bma255_offset_resolution.sensitivity; #endif raw[BMA255_AXIS_X] = obj->offset[BMA255_AXIS_X]*mul*GRAVITY_EARTH_1000/(obj->reso->sensitivity) + obj->cali_sw[BMA255_AXIS_X]; raw[BMA255_AXIS_Y] = obj->offset[BMA255_AXIS_Y]*mul*GRAVITY_EARTH_1000/(obj->reso->sensitivity) + obj->cali_sw[BMA255_AXIS_Y]; raw[BMA255_AXIS_Z] = obj->offset[BMA255_AXIS_Z]*mul*GRAVITY_EARTH_1000/(obj->reso->sensitivity) + obj->cali_sw[BMA255_AXIS_Z]; act[obj->cvt.map[BMA255_AXIS_X]] = obj->cvt.sign[BMA255_AXIS_X]*raw[BMA255_AXIS_X]; act[obj->cvt.map[BMA255_AXIS_Y]] = obj->cvt.sign[BMA255_AXIS_Y]*raw[BMA255_AXIS_Y]; act[obj->cvt.map[BMA255_AXIS_Z]] = obj->cvt.sign[BMA255_AXIS_Z]*raw[BMA255_AXIS_Z]; return 0; } /*----------------------------------------------------------------------------*/ static int BMA255_WriteCalibration(struct i2c_client *client, int dat[BMA255_AXES_NUM]) { struct bma255_i2c_data *obj = i2c_get_clientdata(client); int err = 0; int cali[BMA255_AXES_NUM], raw[BMA255_AXES_NUM]; //int lsb = bma255_offset_resolution.sensitivity; //int divisor = obj->reso->sensitivity/lsb; if((err = BMA255_ReadCalibrationEx(client, cali, raw))) /*offset will be updated in obj->offset*/ { GSE_ERR("read offset fail, %d\n", err); return err; } GSE_LOG("OLDOFF: (%+3d %+3d %+3d): (%+3d %+3d %+3d) / (%+3d %+3d %+3d)\n", raw[BMA255_AXIS_X], raw[BMA255_AXIS_Y], raw[BMA255_AXIS_Z], obj->offset[BMA255_AXIS_X], obj->offset[BMA255_AXIS_Y], obj->offset[BMA255_AXIS_Z], obj->cali_sw[BMA255_AXIS_X], obj->cali_sw[BMA255_AXIS_Y], obj->cali_sw[BMA255_AXIS_Z]); /*calculate the real offset expected by caller*/ cali[BMA255_AXIS_X] += dat[BMA255_AXIS_X]; cali[BMA255_AXIS_Y] += dat[BMA255_AXIS_Y]; cali[BMA255_AXIS_Z] += dat[BMA255_AXIS_Z]; GSE_LOG("UPDATE: (%+3d %+3d %+3d)\n", dat[BMA255_AXIS_X], dat[BMA255_AXIS_Y], dat[BMA255_AXIS_Z]); #ifdef SW_CALIBRATION obj->cali_sw[BMA255_AXIS_X] = obj->cvt.sign[BMA255_AXIS_X]*(cali[obj->cvt.map[BMA255_AXIS_X]]); obj->cali_sw[BMA255_AXIS_Y] = obj->cvt.sign[BMA255_AXIS_Y]*(cali[obj->cvt.map[BMA255_AXIS_Y]]); obj->cali_sw[BMA255_AXIS_Z] = obj->cvt.sign[BMA255_AXIS_Z]*(cali[obj->cvt.map[BMA255_AXIS_Z]]); #else obj->offset[BMA255_AXIS_X] = (s8)(obj->cvt.sign[BMA255_AXIS_X]*(cali[obj->cvt.map[BMA255_AXIS_X]])*(obj->reso->sensitivity)/GRAVITY_EARTH_1000/(divisor)); obj->offset[BMA255_AXIS_Y] = (s8)(obj->cvt.sign[BMA255_AXIS_Y]*(cali[obj->cvt.map[BMA255_AXIS_Y]])*(obj->reso->sensitivity)/GRAVITY_EARTH_1000/(divisor)); obj->offset[BMA255_AXIS_Z] = (s8)(obj->cvt.sign[BMA255_AXIS_Z]*(cali[obj->cvt.map[BMA255_AXIS_Z]])*(obj->reso->sensitivity)/GRAVITY_EARTH_1000/(divisor)); /*convert software calibration using standard calibration*/ obj->cali_sw[BMA255_AXIS_X] = obj->cvt.sign[BMA255_AXIS_X]*(cali[obj->cvt.map[BMA255_AXIS_X]])%(divisor); obj->cali_sw[BMA255_AXIS_Y] = obj->cvt.sign[BMA255_AXIS_Y]*(cali[obj->cvt.map[BMA255_AXIS_Y]])%(divisor); obj->cali_sw[BMA255_AXIS_Z] = obj->cvt.sign[BMA255_AXIS_Z]*(cali[obj->cvt.map[BMA255_AXIS_Z]])%(divisor); GSE_LOG("NEWOFF: (%+3d %+3d %+3d): (%+3d %+3d %+3d) / (%+3d %+3d %+3d)\n", obj->offset[BMA255_AXIS_X]*divisor + obj->cali_sw[BMA255_AXIS_X], obj->offset[BMA255_AXIS_Y]*divisor + obj->cali_sw[BMA255_AXIS_Y], obj->offset[BMA255_AXIS_Z]*divisor + obj->cali_sw[BMA255_AXIS_Z], obj->offset[BMA255_AXIS_X], obj->offset[BMA255_AXIS_Y], obj->offset[BMA255_AXIS_Z], obj->cali_sw[BMA255_AXIS_X], obj->cali_sw[BMA255_AXIS_Y], obj->cali_sw[BMA255_AXIS_Z]); if((err = bma_i2c_write_block(obj->client, BMA255_REG_OFSX, obj->offset, BMA255_AXES_NUM))<0) { GSE_ERR("write offset fail: %d\n", err); return err; } #endif return err; } /*----------------------------------------------------------------------------*/ static int BMA255_CheckDeviceID(struct i2c_client *client) { u8 databuf[2]; int res = 0; GSE_FUN(); memset(databuf, 0, sizeof(u8)*2); res = bma_i2c_read_block(client,BMA255_REG_DEVID,databuf,0x1); if(res < 0) { goto exit_BMA255_CheckDeviceID; } if(databuf[0]!=BMA255_FIXED_DEVID) { GSE_ERR("BMA255_CheckDeviceID fail! ID=%d\n ", databuf[0]); return BMA255_ERR_IDENTIFICATION; } else { GSE_LOG("BMA255_CheckDeviceID %d pass!\n ", databuf[0]); } exit_BMA255_CheckDeviceID: if (res < 0) { return BMA255_ERR_I2C; } return BMA255_SUCCESS; } /*----------------------------------------------------------------------------*/ static int BMA255_SetPowerMode(struct i2c_client *client, bool enable) { u8 databuf[2] = {0}; int res = 0; u8 addr = BMA255_REG_POWER_CTL; struct bma255_i2c_data *obj = i2c_get_clientdata(client); if(enable == sensor_power ) { GSE_LOG("Sensor power status is newest!\n"); return BMA255_SUCCESS; } if((bma_i2c_read_block(client, addr, databuf, 0x01))<0) { GSE_ERR("read power ctl register err!\n"); return BMA255_ERR_I2C; } if(enable == TRUE) { databuf[0] &= ~BMA255_MEASURE_MODE; } else { databuf[0] |= BMA255_MEASURE_MODE; } res = bma_i2c_write_block(client, BMA255_REG_POWER_CTL, databuf, 0x1); if(res < 0) { GSE_LOG("set power mode failed!\n"); return BMA255_ERR_I2C; } else if(atomic_read(&obj->trace) & BMA_TRC_INFO) { GSE_LOG("set power mode ok %d!\n", databuf[1]); } sensor_power = enable; mdelay(20); return BMA255_SUCCESS; } /*----------------------------------------------------------------------------*/ static int BMA255_SetDataFormat(struct i2c_client *client, u8 dataformat) { struct bma255_i2c_data *obj = i2c_get_clientdata(client); u8 databuf[2] = {0}; int res = 0; if((bma_i2c_read_block(client, BMA255_REG_DATA_FORMAT, databuf, 0x01))<0) { GSE_ERR("bma255 read Dataformat failt \n"); return BMA255_ERR_I2C; } databuf[0] &= ~BMA255_RANGE_MASK; databuf[0] |= dataformat; res = bma_i2c_write_block(client, BMA255_REG_DATA_FORMAT, databuf, 0x01); if(res < 0) { GSE_ERR("bma255 write Dataformat failt \n"); return BMA255_ERR_I2C; } return BMA255_SetDataResolution(obj); } /*----------------------------------------------------------------------------*/ static int BMA255_SetBWRate(struct i2c_client *client, u8 bwrate) { u8 databuf[2] = {0}; int res = 0; if((bma_i2c_read_block(client, BMA255_REG_BW_RATE, databuf, 0x01))<0) { GSE_ERR("bma255 read rate failt \n"); return BMA255_ERR_I2C; } databuf[0] &= ~BMA255_BW_MASK; databuf[0] |= bwrate; res = bma_i2c_write_block(client, BMA255_REG_BW_RATE, databuf, 0x1); if(res < 0) { GSE_ERR("bma255 write rate failt \n"); return BMA255_ERR_I2C; } return BMA255_SUCCESS; } /*----------------------------------------------------------------------------*/ static int BMA255_SetIntEnable(struct i2c_client *client, u8 intenable) { int res = 0; u8 databuf = 0; res = bma_i2c_write_block(client, BMA255_INT_REG_1, &databuf, 0x01); if(res < 0) { return res; } res = bma_i2c_write_block(client, BMA255_INT_REG_2, &databuf, 0x01); if(res < 0) { return res; } GSE_LOG("BMA255 disable interrupt ...\n"); /*for disable interrupt function*/ return BMA255_SUCCESS; } /*----------------------------------------------------------------------------*/ static int bma255_init_client(struct i2c_client *client, int reset_cali) { struct bma255_i2c_data *obj = i2c_get_clientdata(client); int res = 0; GSE_LOG("bma255_init_client \n"); res = BMA255_CheckDeviceID(client); if(res != BMA255_SUCCESS) { return res; } GSE_LOG("BMA255_CheckDeviceID ok \n"); res = BMA255_SetBWRate(client, BMA255_BW_100HZ); if(res != BMA255_SUCCESS ) { return res; } GSE_LOG("BMA255_SetBWRate OK!\n"); res = BMA255_SetDataFormat(client, BMA255_RANGE_2G); if(res != BMA255_SUCCESS) { return res; } GSE_LOG("BMA255_SetDataFormat OK!\n"); gsensor_gain.x = gsensor_gain.y = gsensor_gain.z = obj->reso->sensitivity; res = BMA255_SetIntEnable(client, 0x00); if(res != BMA255_SUCCESS) { return res; } GSE_LOG("BMA255 disable interrupt function!\n"); res = BMA255_SetPowerMode(client, enable_status); if(res != BMA255_SUCCESS) { return res; } GSE_LOG("BMA255_SetPowerMode OK!\n"); if(0 != reset_cali) { /*reset calibration only in power on*/ res = BMA255_ResetCalibration(client); if(res != BMA255_SUCCESS) { return res; } } GSE_LOG("bma255_init_client OK!\n"); #ifdef CONFIG_BMA255_LOWPASS memset(&obj->fir, 0x00, sizeof(obj->fir)); #endif mdelay(20); return BMA255_SUCCESS; } /*----------------------------------------------------------------------------*/ static int BMA255_ReadChipInfo(struct i2c_client *client, char *buf, int bufsize) { u8 databuf[10]; memset(databuf, 0, sizeof(u8)*10); if((NULL == buf)||(bufsize<=30)) { return -1; } if(NULL == client) { *buf = 0; return -2; } sprintf(buf, "BMA056 Chip"); return 0; } /*----------------------------------------------------------------------------*/ static int BMA255_CompassReadData(struct i2c_client *client, char *buf, int bufsize) { struct bma255_i2c_data *obj = (struct bma255_i2c_data*)i2c_get_clientdata(client); u8 databuf[20]; int acc[BMA255_AXES_NUM]; int res = 0; memset(databuf, 0, sizeof(u8)*10); if(NULL == buf) { return -1; } if(NULL == client) { *buf = 0; return -2; } if(sensor_power == FALSE) { res = BMA255_SetPowerMode(client, true); if(res) { GSE_ERR("Power on bma255 error %d!\n", res); } } if((res = BMA255_ReadData(client, obj->data))) { GSE_ERR("I2C error: ret value=%d", res); return -3; } else { /*remap coordinate*/ acc[obj->cvt.map[BMA255_AXIS_X]] = obj->cvt.sign[BMA255_AXIS_X]*obj->data[BMA255_AXIS_X]; acc[obj->cvt.map[BMA255_AXIS_Y]] = obj->cvt.sign[BMA255_AXIS_Y]*obj->data[BMA255_AXIS_Y]; acc[obj->cvt.map[BMA255_AXIS_Z]] = obj->cvt.sign[BMA255_AXIS_Z]*obj->data[BMA255_AXIS_Z]; //printk("cvt x=%d, y=%d, z=%d \n",obj->cvt.sign[BMA255_AXIS_X],obj->cvt.sign[BMA255_AXIS_Y],obj->cvt.sign[BMA255_AXIS_Z]); //GSE_LOG("Mapped gsensor data: %d, %d, %d!\n", acc[BMA255_AXIS_X], acc[BMA255_AXIS_Y], acc[BMA255_AXIS_Z]); sprintf(buf, "%d %d %d", (s16)acc[BMA255_AXIS_X], (s16)acc[BMA255_AXIS_Y], (s16)acc[BMA255_AXIS_Z]); if(atomic_read(&obj->trace) & BMA_TRC_IOCTL) { GSE_LOG("gsensor data for compass: %s!\n", buf); } } return 0; } /*----------------------------------------------------------------------------*/ static int BMA255_ReadSensorData(struct i2c_client *client, char *buf, int bufsize) { struct bma255_i2c_data *obj = (struct bma255_i2c_data*)i2c_get_clientdata(client); u8 databuf[20]; int acc[BMA255_AXES_NUM]; int res = 0; memset(databuf, 0, sizeof(u8)*10); if(NULL == buf) { return -1; } if(NULL == client) { *buf = 0; return -2; } if((res = BMA255_ReadData(client, obj->data))) { GSE_ERR("I2C error: ret value=%d", res); return -3; } else { #if 1 obj->data[BMA255_AXIS_X] = obj->data[BMA255_AXIS_X] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; obj->data[BMA255_AXIS_Y] = obj->data[BMA255_AXIS_Y] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; obj->data[BMA255_AXIS_Z] = obj->data[BMA255_AXIS_Z] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; #endif //printk("raw data x=%d, y=%d, z=%d \n",obj->data[BMA255_AXIS_X],obj->data[BMA255_AXIS_Y],obj->data[BMA255_AXIS_Z]); obj->data[BMA255_AXIS_X] += obj->cali_sw[BMA255_AXIS_X]; obj->data[BMA255_AXIS_Y] += obj->cali_sw[BMA255_AXIS_Y]; obj->data[BMA255_AXIS_Z] += obj->cali_sw[BMA255_AXIS_Z]; //printk("cali_sw x=%d, y=%d, z=%d \n",obj->cali_sw[BMA255_AXIS_X],obj->cali_sw[BMA255_AXIS_Y],obj->cali_sw[BMA255_AXIS_Z]); /*remap coordinate*/ acc[obj->cvt.map[BMA255_AXIS_X]] = obj->cvt.sign[BMA255_AXIS_X]*obj->data[BMA255_AXIS_X]; acc[obj->cvt.map[BMA255_AXIS_Y]] = obj->cvt.sign[BMA255_AXIS_Y]*obj->data[BMA255_AXIS_Y]; acc[obj->cvt.map[BMA255_AXIS_Z]] = obj->cvt.sign[BMA255_AXIS_Z]*obj->data[BMA255_AXIS_Z]; //printk("cvt x=%d, y=%d, z=%d \n",obj->cvt.sign[BMA255_AXIS_X],obj->cvt.sign[BMA255_AXIS_Y],obj->cvt.sign[BMA255_AXIS_Z]); //GSE_LOG("Mapped gsensor data: %d, %d, %d!\n", acc[BMA255_AXIS_X], acc[BMA255_AXIS_Y], acc[BMA255_AXIS_Z]); //Out put the mg //printk("mg acc=%d, GRAVITY=%d, sensityvity=%d \n",acc[BMA255_AXIS_X],GRAVITY_EARTH_1000,obj->reso->sensitivity); #if 0 acc[BMA255_AXIS_X] = acc[BMA255_AXIS_X] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; acc[BMA255_AXIS_Y] = acc[BMA255_AXIS_Y] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; acc[BMA255_AXIS_Z] = acc[BMA255_AXIS_Z] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; #endif sprintf(buf, "%04x %04x %04x", acc[BMA255_AXIS_X], acc[BMA255_AXIS_Y], acc[BMA255_AXIS_Z]); if(atomic_read(&obj->trace) & BMA_TRC_IOCTL) { GSE_LOG("gsensor data: %s!\n", buf); } } return 0; } /*----------------------------------------------------------------------------*/ static int BMA255_ReadRawData(struct i2c_client *client, char *buf) { struct bma255_i2c_data *obj = (struct bma255_i2c_data*)i2c_get_clientdata(client); int res = 0; if (!buf || !client) { return EINVAL; } if((res = BMA255_ReadData(client, obj->data))) { GSE_ERR("I2C error: ret value=%d", res); return EIO; } else { sprintf(buf, "BMA255_ReadRawData %04x %04x %04x", obj->data[BMA255_AXIS_X], obj->data[BMA255_AXIS_Y], obj->data[BMA255_AXIS_Z]); } return 0; } /*----------------------------------------------------------------------------*/ static int bma255_set_mode(struct i2c_client *client, unsigned char mode) { int comres = 0; unsigned char data[2] = {BMA255_EN_LOW_POWER__REG}; if ((client == NULL) || (mode >= 3)) { return -1; } comres = bma_i2c_read_block(client, BMA255_EN_LOW_POWER__REG, data, 1); switch (mode) { case BMA255_MODE_NORMAL: data[0] = BMA255_SET_BITSLICE(data[0], BMA255_EN_LOW_POWER, 0); data[0] = BMA255_SET_BITSLICE(data[0], BMA255_EN_SUSPEND, 0); break; case BMA255_MODE_LOWPOWER: data[0] = BMA255_SET_BITSLICE(data[0], BMA255_EN_LOW_POWER, 1); data[0] = BMA255_SET_BITSLICE(data[0], BMA255_EN_SUSPEND, 0); break; case BMA255_MODE_SUSPEND: data[0] = BMA255_SET_BITSLICE(data[0], BMA255_EN_LOW_POWER, 0); data[0] = BMA255_SET_BITSLICE(data[0], BMA255_EN_SUSPEND, 1); break; default: break; } comres = bma_i2c_write_block(client, BMA255_EN_LOW_POWER__REG, data, 0x1); if(comres < 0) { return BMA255_ERR_I2C; } else { return comres; } } /*----------------------------------------------------------------------------*/ static int bma255_get_mode(struct i2c_client *client, unsigned char *mode) { int comres = 0; if (client == NULL) { return -1; } comres = bma_i2c_read_block(client, BMA255_EN_LOW_POWER__REG, mode, 0x01); *mode = (*mode) >> 6; return comres; } /*----------------------------------------------------------------------------*/ static int bma255_set_range(struct i2c_client *client, unsigned char range) { int comres = 0; unsigned char data[2] = {BMA255_RANGE_SEL__REG}; if (client == NULL) { return -1; } comres = bma_i2c_read_block(client, BMA255_RANGE_SEL__REG, data, 1); data[0] = BMA255_SET_BITSLICE(data[0], BMA255_RANGE_SEL, range); comres = bma_i2c_write_block(client, BMA255_RANGE_SEL__REG, data, 0x01); if(comres < 0) { return BMA255_ERR_I2C; } else { return comres; } } /*----------------------------------------------------------------------------*/ static int bma255_get_range(struct i2c_client *client, unsigned char *range) { int comres = 0; unsigned char data; if (client == NULL) { return -1; } comres = bma_i2c_read_block(client, BMA255_RANGE_SEL__REG, &data, 1); *range = BMA255_GET_BITSLICE(data, BMA255_RANGE_SEL); return comres; } /*----------------------------------------------------------------------------*/ static int bma255_set_bandwidth(struct i2c_client *client, unsigned char bandwidth) { int comres = 0; unsigned char data[2] = {BMA255_BANDWIDTH__REG}; if (client == NULL) { return -1; } comres = bma_i2c_read_block(client, BMA255_BANDWIDTH__REG, data, 1); data[0] = BMA255_SET_BITSLICE(data[0], BMA255_BANDWIDTH, bandwidth); comres = bma_i2c_write_block(client, BMA255_BANDWIDTH__REG, data, 0x01); if(comres < 0) { return BMA255_ERR_I2C; } else { return comres; } } /*----------------------------------------------------------------------------*/ static int bma255_get_bandwidth(struct i2c_client *client, unsigned char *bandwidth) { int comres = 0; unsigned char data; if (client == NULL) { return -1; } comres = bma_i2c_read_block(client, BMA255_BANDWIDTH__REG, &data, 1); data = BMA255_GET_BITSLICE(data, BMA255_BANDWIDTH); if (data < 0x08) //7.81Hz { *bandwidth = 0x08; } else if (data > 0x0f) // 1000Hz { *bandwidth = 0x0f; } else { *bandwidth = data; } return comres; } /*----------------------------------------------------------------------------*/ static ssize_t show_chipinfo_value(struct device_driver *ddri, char *buf) { struct i2c_client *client = bma255_i2c_client; char strbuf[BMA255_BUFSIZE]; if(NULL == client) { GSE_ERR("i2c client is null!!\n"); return 0; } BMA255_ReadChipInfo(client, strbuf, BMA255_BUFSIZE); return snprintf(buf, PAGE_SIZE, "%s\n", strbuf); } /*----------------------------------------------------------------------------*/ /* g sensor opmode for compass tilt compensation */ static ssize_t show_cpsopmode_value(struct device_driver *ddri, char *buf) { unsigned char data; if (bma255_get_mode(bma255_i2c_client, &data) < 0) { return sprintf(buf, "Read error\n"); } else { return sprintf(buf, "%d\n", data); } } /*----------------------------------------------------------------------------*/ /* g sensor opmode for compass tilt compensation */ static ssize_t store_cpsopmode_value(struct device_driver *ddri, const char *buf, size_t count) { unsigned long data; int error; if ((error = strict_strtoul(buf, 10, &data))) { return error; } if (data == BMA255_MODE_NORMAL) { //GSE_ERR("yucong normal mode\n"); //BMA255_SetPowerMode(bma255_i2c_client, true); } else if (data == BMA255_MODE_SUSPEND) { //GSE_ERR("yucong suspend mode\n"); //BMA255_SetPowerMode(bma255_i2c_client, false); } else if (bma255_set_mode(bma255_i2c_client, (unsigned char) data) < 0) { GSE_ERR("invalid content: '%s', length = %d\n", buf, count); } return count; } /*----------------------------------------------------------------------------*/ /* g sensor range for compass tilt compensation */ static ssize_t show_cpsrange_value(struct device_driver *ddri, char *buf) { unsigned char data; if (bma255_get_range(bma255_i2c_client, &data) < 0) { return sprintf(buf, "Read error\n"); } else { return sprintf(buf, "%d\n", data); } } /*----------------------------------------------------------------------------*/ /* g sensor range for compass tilt compensation */ static ssize_t store_cpsrange_value(struct device_driver *ddri, const char *buf, size_t count) { unsigned long data; int error; if ((error = strict_strtoul(buf, 10, &data))) { return error; } if (bma255_set_range(bma255_i2c_client, (unsigned char) data) < 0) { GSE_ERR("invalid content: '%s', length = %d\n", buf, count); } return count; } /*----------------------------------------------------------------------------*/ /* g sensor bandwidth for compass tilt compensation */ static ssize_t show_cpsbandwidth_value(struct device_driver *ddri, char *buf) { unsigned char data; if (bma255_get_bandwidth(bma255_i2c_client, &data) < 0) { return sprintf(buf, "Read error\n"); } else { return sprintf(buf, "%d\n", data); } } /*----------------------------------------------------------------------------*/ /* g sensor bandwidth for compass tilt compensation */ static ssize_t store_cpsbandwidth_value(struct device_driver *ddri, const char *buf, size_t count) { unsigned long data; int error; if ((error = strict_strtoul(buf, 10, &data))) { return error; } if (bma255_set_bandwidth(bma255_i2c_client, (unsigned char) data) < 0) { GSE_ERR("invalid content: '%s', length = %d\n", buf, count); } return count; } /*----------------------------------------------------------------------------*/ /* g sensor data for compass tilt compensation */ static ssize_t show_cpsdata_value(struct device_driver *ddri, char *buf) { struct i2c_client *client = bma255_i2c_client; char strbuf[BMA255_BUFSIZE]; if(NULL == client) { GSE_ERR("i2c client is null!!\n"); return 0; } BMA255_CompassReadData(client, strbuf, BMA255_BUFSIZE); return snprintf(buf, PAGE_SIZE, "%s\n", strbuf); } /*----------------------------------------------------------------------------*/ static ssize_t show_sensordata_value(struct device_driver *ddri, char *buf) { struct i2c_client *client = bma255_i2c_client; char strbuf[BMA255_BUFSIZE]; if(NULL == client) { GSE_ERR("i2c client is null!!\n"); return 0; } BMA255_ReadSensorData(client, strbuf, BMA255_BUFSIZE); //BMA255_ReadRawData(client, strbuf); return snprintf(buf, PAGE_SIZE, "%s\n", strbuf); } /*----------------------------------------------------------------------------*/ static ssize_t show_cali_value(struct device_driver *ddri, char *buf) { struct i2c_client *client = bma255_i2c_client; struct bma255_i2c_data *obj; int err, len = 0, mul; int tmp[BMA255_AXES_NUM]; if(NULL == client) { GSE_ERR("i2c client is null!!\n"); return 0; } obj = i2c_get_clientdata(client); if((err = BMA255_ReadOffset(client, obj->offset))) { return -EINVAL; } else if((err = BMA255_ReadCalibration(client, tmp))) { return -EINVAL; } else { mul = obj->reso->sensitivity/bma255_offset_resolution.sensitivity; len += snprintf(buf+len, PAGE_SIZE-len, "[HW ][%d] (%+3d, %+3d, %+3d) : (0x%02X, 0x%02X, 0x%02X)\n", mul, obj->offset[BMA255_AXIS_X], obj->offset[BMA255_AXIS_Y], obj->offset[BMA255_AXIS_Z], obj->offset[BMA255_AXIS_X], obj->offset[BMA255_AXIS_Y], obj->offset[BMA255_AXIS_Z]); len += snprintf(buf+len, PAGE_SIZE-len, "[SW ][%d] (%+3d, %+3d, %+3d)\n", 1, obj->cali_sw[BMA255_AXIS_X], obj->cali_sw[BMA255_AXIS_Y], obj->cali_sw[BMA255_AXIS_Z]); len += snprintf(buf+len, PAGE_SIZE-len, "[ALL] (%+3d, %+3d, %+3d) : (%+3d, %+3d, %+3d)\n", obj->offset[BMA255_AXIS_X]*mul + obj->cali_sw[BMA255_AXIS_X], obj->offset[BMA255_AXIS_Y]*mul + obj->cali_sw[BMA255_AXIS_Y], obj->offset[BMA255_AXIS_Z]*mul + obj->cali_sw[BMA255_AXIS_Z], tmp[BMA255_AXIS_X], tmp[BMA255_AXIS_Y], tmp[BMA255_AXIS_Z]); return len; } } /*----------------------------------------------------------------------------*/ static ssize_t store_cali_value(struct device_driver *ddri, const char *buf, size_t count) { struct i2c_client *client = bma255_i2c_client; int err, x, y, z; int dat[BMA255_AXES_NUM]; if(!strncmp(buf, "rst", 3)) { if((err = BMA255_ResetCalibration(client))) { GSE_ERR("reset offset err = %d\n", err); } } else if(3 == sscanf(buf, "0x%02X 0x%02X 0x%02X", &x, &y, &z)) { dat[BMA255_AXIS_X] = x; dat[BMA255_AXIS_Y] = y; dat[BMA255_AXIS_Z] = z; if((err = BMA255_WriteCalibration(client, dat))) { GSE_ERR("write calibration err = %d\n", err); } } else { GSE_ERR("invalid format\n"); } return count; } /*----------------------------------------------------------------------------*/ static ssize_t show_firlen_value(struct device_driver *ddri, char *buf) { #ifdef CONFIG_BMA255_LOWPASS struct i2c_client *client = bma255_i2c_client; struct bma255_i2c_data *obj = i2c_get_clientdata(client); if(atomic_read(&obj->firlen)) { int idx, len = atomic_read(&obj->firlen); GSE_LOG("len = %2d, idx = %2d\n", obj->fir.num, obj->fir.idx); for(idx = 0; idx < len; idx++) { GSE_LOG("[%5d %5d %5d]\n", obj->fir.raw[idx][BMA255_AXIS_X], obj->fir.raw[idx][BMA255_AXIS_Y], obj->fir.raw[idx][BMA255_AXIS_Z]); } GSE_LOG("sum = [%5d %5d %5d]\n", obj->fir.sum[BMA255_AXIS_X], obj->fir.sum[BMA255_AXIS_Y], obj->fir.sum[BMA255_AXIS_Z]); GSE_LOG("avg = [%5d %5d %5d]\n", obj->fir.sum[BMA255_AXIS_X]/len, obj->fir.sum[BMA255_AXIS_Y]/len, obj->fir.sum[BMA255_AXIS_Z]/len); } return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&obj->firlen)); #else return snprintf(buf, PAGE_SIZE, "not support\n"); #endif } /*----------------------------------------------------------------------------*/ static ssize_t store_firlen_value(struct device_driver *ddri, const char *buf, size_t count) { #ifdef CONFIG_BMA255_LOWPASS struct i2c_client *client = bma255_i2c_client; struct bma255_i2c_data *obj = i2c_get_clientdata(client); int firlen; if(1 != sscanf(buf, "%d", &firlen)) { GSE_ERR("invallid format\n"); } else if(firlen > C_MAX_FIR_LENGTH) { GSE_ERR("exceeds maximum filter length\n"); } else { atomic_set(&obj->firlen, firlen); if(NULL == firlen) { atomic_set(&obj->fir_en, 0); } else { memset(&obj->fir, 0x00, sizeof(obj->fir)); atomic_set(&obj->fir_en, 1); } } #endif return count; } /*----------------------------------------------------------------------------*/ static ssize_t show_trace_value(struct device_driver *ddri, char *buf) { ssize_t res; struct bma255_i2c_data *obj = obj_i2c_data; if (obj == NULL) { GSE_ERR("i2c_data obj is null!!\n"); return 0; } res = snprintf(buf, PAGE_SIZE, "0x%04X\n", atomic_read(&obj->trace)); return res; } /*----------------------------------------------------------------------------*/ static ssize_t store_trace_value(struct device_driver *ddri, const char *buf, size_t count) { struct bma255_i2c_data *obj = obj_i2c_data; int trace; if (obj == NULL) { GSE_ERR("i2c_data obj is null!!\n"); return 0; } if(1 == sscanf(buf, "0x%x", &trace)) { atomic_set(&obj->trace, trace); } else { GSE_ERR("invalid content: '%s', length = %d\n", buf, count); } return count; } /*----------------------------------------------------------------------------*/ static ssize_t show_status_value(struct device_driver *ddri, char *buf) { ssize_t len = 0; struct bma255_i2c_data *obj = obj_i2c_data; if (obj == NULL) { GSE_ERR("i2c_data obj is null!!\n"); return 0; } if(obj->hw) { len += snprintf(buf+len, PAGE_SIZE-len, "CUST: %d %d (%d %d)\n", obj->hw->i2c_num, obj->hw->direction, obj->hw->power_id, obj->hw->power_vol); } else { len += snprintf(buf+len, PAGE_SIZE-len, "CUST: NULL\n"); } return len; } /*----------------------------------------------------------------------------*/ static ssize_t show_power_status_value(struct device_driver *ddri, char *buf) { if(sensor_power) printk("G sensor is in work mode, sensor_power = %d\n", sensor_power); else printk("G sensor is in standby mode, sensor_power = %d\n", sensor_power); return 0; } /*----------------------------------------------------------------------------*/ static DRIVER_ATTR(chipinfo, S_IWUSR | S_IRUGO, show_chipinfo_value, NULL); static DRIVER_ATTR(cpsdata, S_IWUSR | S_IRUGO, show_cpsdata_value, NULL); static DRIVER_ATTR(cpsopmode, S_IWUSR | S_IRUGO, show_cpsopmode_value, store_cpsopmode_value); static DRIVER_ATTR(cpsrange, S_IWUSR | S_IRUGO, show_cpsrange_value, store_cpsrange_value); static DRIVER_ATTR(cpsbandwidth, S_IWUSR | S_IRUGO, show_cpsbandwidth_value, store_cpsbandwidth_value); static DRIVER_ATTR(sensordata, S_IWUSR | S_IRUGO, show_sensordata_value, NULL); static DRIVER_ATTR(cali, S_IWUSR | S_IRUGO, show_cali_value, store_cali_value); static DRIVER_ATTR(firlen, S_IWUSR | S_IRUGO, show_firlen_value, store_firlen_value); static DRIVER_ATTR(trace, S_IWUSR | S_IRUGO, show_trace_value, store_trace_value); static DRIVER_ATTR(status, S_IRUGO, show_status_value, NULL); static DRIVER_ATTR(powerstatus, S_IRUGO, show_power_status_value, NULL); /*----------------------------------------------------------------------------*/ static struct driver_attribute *bma255_attr_list[] = { &driver_attr_chipinfo, /*chip information*/ &driver_attr_sensordata, /*dump sensor data*/ &driver_attr_cali, /*show calibration data*/ &driver_attr_firlen, /*filter length: 0: disable, others: enable*/ &driver_attr_trace, /*trace log*/ &driver_attr_status, &driver_attr_powerstatus, &driver_attr_cpsdata, /*g sensor data for compass tilt compensation*/ &driver_attr_cpsopmode, /*g sensor opmode for compass tilt compensation*/ &driver_attr_cpsrange, /*g sensor range for compass tilt compensation*/ &driver_attr_cpsbandwidth, /*g sensor bandwidth for compass tilt compensation*/ }; /*----------------------------------------------------------------------------*/ static int bma255_create_attr(struct device_driver *driver) { int idx, err = 0; int num = (int)(sizeof(bma255_attr_list)/sizeof(bma255_attr_list[0])); if (driver == NULL) { return -EINVAL; } for(idx = 0; idx < num; idx++) { if((err = driver_create_file(driver, bma255_attr_list[idx]))) { GSE_ERR("driver_create_file (%s) = %d\n", bma255_attr_list[idx]->attr.name, err); break; } } return err; } /*----------------------------------------------------------------------------*/ static int bma255_delete_attr(struct device_driver *driver) { int idx ,err = 0; int num = (int)(sizeof(bma255_attr_list)/sizeof(bma255_attr_list[0])); if(driver == NULL) { return -EINVAL; } for(idx = 0; idx < num; idx++) { driver_remove_file(driver, bma255_attr_list[idx]); } return err; } /*----------------------------------------------------------------------------*/ int gsensor_operate(void* self, uint32_t command, void* buff_in, int size_in, void* buff_out, int size_out, int* actualout) { int err = 0; int value, sample_delay; struct bma255_i2c_data *priv = (struct bma255_i2c_data*)self; hwm_sensor_data* gsensor_data; char buff[BMA255_BUFSIZE]; //GSE_FUN(f); switch (command) { case SENSOR_DELAY: if((buff_in == NULL) || (size_in < sizeof(int))) { GSE_ERR("Set delay parameter error!\n"); err = -EINVAL; } else { value = *(int *)buff_in; if(value <= 5) { sample_delay = BMA255_BW_200HZ; } else if(value <= 10) { sample_delay = BMA255_BW_100HZ; } else { sample_delay = BMA255_BW_50HZ; } mutex_lock(&bma_op_mutex); err = BMA255_SetBWRate(priv->client, sample_delay); if(err != BMA255_SUCCESS ) //0x2C->BW=100Hz { GSE_ERR("Set delay parameter error!\n"); } mutex_unlock(&bma_op_mutex); if(value >= 50) { atomic_set(&priv->filter, 0); } else { #if defined(CONFIG_BMA255_LOWPASS) priv->fir.num = 0; priv->fir.idx = 0; priv->fir.sum[BMA255_AXIS_X] = 0; priv->fir.sum[BMA255_AXIS_Y] = 0; priv->fir.sum[BMA255_AXIS_Z] = 0; atomic_set(&priv->filter, 1); #endif } } break; case SENSOR_ENABLE: if((buff_in == NULL) || (size_in < sizeof(int))) { GSE_ERR("Enable sensor parameter error!\n"); err = -EINVAL; } else { value = *(int *)buff_in; mutex_lock(&bma_op_mutex); GSE_LOG("Gsensor enable_status value = %d,sensor_power=%d\n",value,sensor_power); if(((value == 0) && (sensor_power == false)) ||((value == 1) && (sensor_power == true))) { GSE_LOG("Gsensor device have updated!\n"); enable_status = sensor_power; } else { enable_status = !sensor_power; err = BMA255_SetPowerMode( priv->client, !sensor_power); } GSE_LOG("Gsensor enable_status = %d\n",enable_status); mutex_unlock(&bma_op_mutex); } break; case SENSOR_GET_DATA: if((buff_out == NULL) || (size_out< sizeof(hwm_sensor_data))) { GSE_ERR("get sensor data parameter error!\n"); err = -EINVAL; } else { mutex_lock(&bma_op_mutex); gsensor_data = (hwm_sensor_data *)buff_out; BMA255_ReadSensorData(priv->client, buff, BMA255_BUFSIZE); sscanf(buff, "%x %x %x", &gsensor_data->values[0], &gsensor_data->values[1], &gsensor_data->values[2]); gsensor_data->status = SENSOR_STATUS_ACCURACY_MEDIUM; gsensor_data->value_divide = 1000; mutex_unlock(&bma_op_mutex); } break; default: GSE_ERR("gsensor operate function no this parameter %d!\n", command); err = -1; break; } return err; } /****************************************************************************** * Function Configuration ******************************************************************************/ static int bma255_open(struct inode *inode, struct file *file) { file->private_data = bma255_i2c_client; if(file->private_data == NULL) { GSE_ERR("null pointer!!\n"); return -EINVAL; } return nonseekable_open(inode, file); } /*----------------------------------------------------------------------------*/ static int bma255_release(struct inode *inode, struct file *file) { file->private_data = NULL; return 0; } /*----------------------------------------------------------------------------*/ static long bma255_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct i2c_client *client = (struct i2c_client*)file->private_data; struct bma255_i2c_data *obj = (struct bma255_i2c_data*)i2c_get_clientdata(client); char strbuf[BMA255_BUFSIZE]; void __user *data; SENSOR_DATA sensor_data; long err = 0; int cali[3]; //GSE_FUN(f); if(_IOC_DIR(cmd) & _IOC_READ) { err = !access_ok(VERIFY_WRITE, (void __user *)arg, _IOC_SIZE(cmd)); } else if(_IOC_DIR(cmd) & _IOC_WRITE) { err = !access_ok(VERIFY_READ, (void __user *)arg, _IOC_SIZE(cmd)); } if(err) { GSE_ERR("access error: %08X, (%2d, %2d)\n", cmd, _IOC_DIR(cmd), _IOC_SIZE(cmd)); return -EFAULT; } switch(cmd) { case GSENSOR_IOCTL_INIT: bma255_init_client(client, 0); break; case GSENSOR_IOCTL_READ_CHIPINFO: data = (void __user *) arg; if(data == NULL) { err = -EINVAL; break; } BMA255_ReadChipInfo(client, strbuf, BMA255_BUFSIZE); if(copy_to_user(data, strbuf, strlen(strbuf)+1)) { err = -EFAULT; break; } break; case GSENSOR_IOCTL_READ_SENSORDATA: data = (void __user *) arg; if(data == NULL) { err = -EINVAL; break; } BMA255_SetPowerMode(client,true); BMA255_ReadSensorData(client, strbuf, BMA255_BUFSIZE); if(copy_to_user(data, strbuf, strlen(strbuf)+1)) { err = -EFAULT; break; } break; case GSENSOR_IOCTL_READ_GAIN: data = (void __user *) arg; if(data == NULL) { err = -EINVAL; break; } if(copy_to_user(data, &gsensor_gain, sizeof(GSENSOR_VECTOR3D))) { err = -EFAULT; break; } break; case GSENSOR_IOCTL_READ_RAW_DATA: data = (void __user *) arg; if(data == NULL) { err = -EINVAL; break; } BMA255_ReadRawData(client, strbuf); if(copy_to_user(data, &strbuf, strlen(strbuf)+1)) { err = -EFAULT; break; } break; case GSENSOR_IOCTL_SET_CALI: data = (void __user*)arg; if(data == NULL) { err = -EINVAL; break; } if(copy_from_user(&sensor_data, data, sizeof(sensor_data))) { err = -EFAULT; break; } if(atomic_read(&obj->suspend)) { GSE_ERR("Perform calibration in suspend state!!\n"); err = -EINVAL; } else { #if 0 cali[BMA255_AXIS_X] = sensor_data.x * obj->reso->sensitivity / GRAVITY_EARTH_1000; cali[BMA255_AXIS_Y] = sensor_data.y * obj->reso->sensitivity / GRAVITY_EARTH_1000; cali[BMA255_AXIS_Z] = sensor_data.z * obj->reso->sensitivity / GRAVITY_EARTH_1000; #else cali[BMA255_AXIS_X] = sensor_data.x; cali[BMA255_AXIS_Y] = sensor_data.y; cali[BMA255_AXIS_Z] = sensor_data.z; #endif err = BMA255_WriteCalibration(client, cali); } break; case GSENSOR_IOCTL_CLR_CALI: err = BMA255_ResetCalibration(client); break; case GSENSOR_IOCTL_GET_CALI: data = (void __user*)arg; if(data == NULL) { err = -EINVAL; break; } if((err = BMA255_ReadCalibration(client, cali))) { break; } #if 0 sensor_data.x = cali[BMA255_AXIS_X] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; sensor_data.y = cali[BMA255_AXIS_Y] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; sensor_data.z = cali[BMA255_AXIS_Z] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; #else sensor_data.x = cali[BMA255_AXIS_X]; sensor_data.y = cali[BMA255_AXIS_Y]; sensor_data.z = cali[BMA255_AXIS_Z]; #endif if(copy_to_user(data, &sensor_data, sizeof(sensor_data))) { err = -EFAULT; break; } break; default: GSE_ERR("unknown IOCTL: 0x%08x\n", cmd); err = -ENOIOCTLCMD; break; } return err; } /*----------------------------------------------------------------------------*/ static struct file_operations bma255_fops = { //.owner = THIS_MODULE, .open = bma255_open, .release = bma255_release, .unlocked_ioctl = bma255_unlocked_ioctl, }; /*----------------------------------------------------------------------------*/ static struct miscdevice bma255_device = { .minor = MISC_DYNAMIC_MINOR, .name = "gsensor", .fops = &bma255_fops, }; /*----------------------------------------------------------------------------*/ #ifndef USE_EARLY_SUSPEND /*----------------------------------------------------------------------------*/ static int bma255_suspend(struct i2c_client *client, pm_message_t msg) { struct bma255_i2c_data *obj = i2c_get_clientdata(client); int err = 0; GSE_FUN(); mutex_lock(&bma_op_mutex); if(msg.event == PM_EVENT_SUSPEND) { if(obj == NULL) { GSE_ERR("null pointer!!\n"); mutex_unlock(&bma_op_mutex); return -EINVAL; } atomic_set(&obj->suspend, 1); if((err = BMA255_SetPowerMode(obj->client, false))) { GSE_ERR("write power control fail!!\n"); mutex_unlock(&bma_op_mutex); return -EINVAL; } sensor_power = false; BMA255_power(obj->hw, 0); } mutex_unlock(&bma_op_mutex); return err; } /*----------------------------------------------------------------------------*/ static int bma255_resume(struct i2c_client *client) { struct bma255_i2c_data *obj = i2c_get_clientdata(client); int err; GSE_FUN(); if(obj == NULL) { GSE_ERR("null pointer!!\n"); return -EINVAL; } mutex_lock(&bma_op_mutex); BMA255_power(obj->hw, 1); if((err = bma255_init_client(client, 0))) { GSE_ERR("initialize client fail!!\n"); mutex_unlock(&bma_op_mutex); return err; } atomic_set(&obj->suspend, 0); mutex_unlock(&bma_op_mutex); return 0; } /*----------------------------------------------------------------------------*/ #else /*CONFIG_HAS_EARLY_SUSPEND is defined*/ /*----------------------------------------------------------------------------*/ static void bma255_early_suspend(struct early_suspend *h) { struct bma255_i2c_data *obj = container_of(h, struct bma255_i2c_data, early_drv); int err; GSE_FUN(); if(obj == NULL) { GSE_ERR("null pointer!!\n"); return; } atomic_set(&obj->suspend, 1); if(err = BMA255_SetPowerMode(obj->client, false)) { GSE_ERR("write power control fail!!\n"); return; } sensor_power = false; BMA255_power(obj->hw, 0); } /*----------------------------------------------------------------------------*/ static void bma255_late_resume(struct early_suspend *h) { struct bma255_i2c_data *obj = container_of(h, struct bma255_i2c_data, early_drv); int err; GSE_FUN(); if(obj == NULL) { GSE_ERR("null pointer!!\n"); return; } BMA255_power(obj->hw, 1); if(err = bma255_init_client(obj->client, 0)) { GSE_ERR("initialize client fail!!\n"); return; } atomic_set(&obj->suspend, 0); } /*----------------------------------------------------------------------------*/ #endif /*USE_EARLY_SUSPEND*/ /*----------------------------------------------------------------------------*/ static int bma255_i2c_detect(struct i2c_client *client, struct i2c_board_info *info) { strcpy(info->type, BMA255_DEV_NAME); return 0; } /*----------------------------------------------------------------------------*/ static int bma255_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_client *new_client; struct bma255_i2c_data *obj; struct hwmsen_object sobj; int err = 0; int retry = 0; GSE_FUN(); if(!(obj = kzalloc(sizeof(*obj), GFP_KERNEL))) { err = -ENOMEM; goto exit; } memset(obj, 0, sizeof(struct bma255_i2c_data)); obj->hw = get_cust_acc_hw(); if((err = hwmsen_get_convert(obj->hw->direction, &obj->cvt))) { GSE_ERR("invalid direction: %d\n", obj->hw->direction); goto exit; } obj_i2c_data = obj; obj->client = client; new_client = obj->client; i2c_set_clientdata(new_client,obj); atomic_set(&obj->trace, 0); atomic_set(&obj->suspend, 0); #ifdef CONFIG_BMA255_LOWPASS if(obj->hw->firlen > C_MAX_FIR_LENGTH) { atomic_set(&obj->firlen, C_MAX_FIR_LENGTH); } else { atomic_set(&obj->firlen, obj->hw->firlen); } if(atomic_read(&obj->firlen) > 0) { atomic_set(&obj->fir_en, 1); } #endif bma255_i2c_client = new_client; for(retry = 0; retry < 3; retry++){ if((err = bma255_init_client(new_client, 1))) { GSE_ERR("bma056_device init cilent fail time: %d\n", retry); continue; } } if(err != 0) goto exit_init_failed; if((err = misc_register(&bma255_device))) { GSE_ERR("bma255_device register failed\n"); goto exit_misc_device_register_failed; } if((err = bma255_create_attr(&bma255_gsensor_driver.driver))) { GSE_ERR("create attribute err = %d\n", err); goto exit_create_attr_failed; } sobj.self = obj; sobj.polling = 1; sobj.sensor_operate = gsensor_operate; if((err = hwmsen_attach(ID_ACCELEROMETER, &sobj))) { GSE_ERR("attach fail = %d\n", err); goto exit_kfree; } #ifdef USE_EARLY_SUSPEND obj->early_drv.level = EARLY_SUSPEND_LEVEL_DISABLE_FB - 1, obj->early_drv.suspend = bma255_early_suspend, obj->early_drv.resume = bma255_late_resume, register_early_suspend(&obj->early_drv); #endif GSE_LOG("%s: OK\n", __func__); return 0; exit_create_attr_failed: misc_deregister(&bma255_device); exit_misc_device_register_failed: exit_init_failed: //i2c_detach_client(new_client); exit_kfree: kfree(obj); exit: GSE_ERR("%s: err = %d\n", __func__, err); return err; } /*----------------------------------------------------------------------------*/ static int bma255_i2c_remove(struct i2c_client *client) { int err = 0; if((err = bma255_delete_attr(&bma255_gsensor_driver.driver))) { GSE_ERR("bma150_delete_attr fail: %d\n", err); } if((err = misc_deregister(&bma255_device))) { GSE_ERR("misc_deregister fail: %d\n", err); } if((err = hwmsen_detach(ID_ACCELEROMETER))) bma255_i2c_client = NULL; i2c_unregister_device(client); kfree(i2c_get_clientdata(client)); return 0; } /*----------------------------------------------------------------------------*/ static int bma255_probe(struct platform_device *pdev) { struct acc_hw *hw = get_cust_acc_hw(); GSE_FUN(); BMA255_power(hw, 1); if(i2c_add_driver(&bma255_i2c_driver)) { GSE_ERR("add driver error\n"); return -1; } return 0; } /*----------------------------------------------------------------------------*/ static int bma255_remove(struct platform_device *pdev) { struct acc_hw *hw = get_cust_acc_hw(); GSE_FUN(); BMA255_power(hw, 0); i2c_del_driver(&bma255_i2c_driver); return 0; } /*----------------------------------------------------------------------------*/ #if 1 #ifdef CONFIG_OF static const struct of_device_id gsensor_of_match[] = { { .compatible = "mediatek,gsensor", }, {}, }; #endif static struct platform_driver bma255_gsensor_driver = { .probe = bma255_probe, .remove = bma255_remove, .driver = { .name = "gsensor", // .owner = THIS_MODULE, #ifdef CONFIG_OF .of_match_table = gsensor_of_match, #endif } }; #else static struct platform_driver bma255_gsensor_driver = { .probe = bma255_probe, .remove = bma255_remove, .driver = { .name = "gsensor", } }; #endif /*----------------------------------------------------------------------------*/ static int __init bma255_init(void) { struct acc_hw *hw = get_cust_acc_hw(); GSE_LOG("%s: i2c_number=%d\n", __func__,hw->i2c_num); i2c_register_board_info(hw->i2c_num, &bma255_i2c_info, 1); if(platform_driver_register(&bma255_gsensor_driver)) { GSE_ERR("failed to register driver"); return -ENODEV; } return 0; } /*----------------------------------------------------------------------------*/ static void __exit bma255_exit(void) { GSE_FUN(); platform_driver_unregister(&bma255_gsensor_driver); } /*----------------------------------------------------------------------------*/ module_init(bma255_init); module_exit(bma255_exit); /*----------------------------------------------------------------------------*/ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("BMA255 I2C driver"); MODULE_AUTHOR("hongji.zhou@bosch-sensortec.com");