/* BMA150 motion sensor driver * * * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * 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. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define POWER_NONE_MACRO MT65XX_POWER_NONE #include #include #include #include #include "bma250.h" #include /*----------------------------------------------------------------------------*/ #define I2C_DRIVERID_BMA250 250 /*----------------------------------------------------------------------------*/ //#define DEBUG 1 /*----------------------------------------------------------------------------*/ //#define CONFIG_BMA150_LOWPASS /*apply low pass filter on output*/ #define SW_CALIBRATION /*----------------------------------------------------------------------------*/ #define BMA250_AXIS_X 0 #define BMA250_AXIS_Y 1 #define BMA250_AXIS_Z 2 #define BMA250_AXES_NUM 3 #define BMA250_DATA_LEN 6 #define BMA250_DEV_NAME "BMA250" /*----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------*/ static const struct i2c_device_id bma250_i2c_id[] = {{BMA250_DEV_NAME,0},{}}; static struct i2c_board_info __initdata i2c_bma250={ I2C_BOARD_INFO("BMA250", (0x30>>1))}; /*the adapter id will be available in customization*/ //static unsigned short bma250_force[] = {0x00, BMA250_I2C_SLAVE_WRITE_ADDR, I2C_CLIENT_END, I2C_CLIENT_END}; //static const unsigned short *const bma250_forces[] = { bma250_force, NULL }; //static struct i2c_client_address_data bma250_addr_data = { .forces = bma250_forces,}; /*----------------------------------------------------------------------------*/ static int bma250_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id); static int bma250_i2c_remove(struct i2c_client *client); //static int bma250_i2c_detect(struct i2c_client *client, int kind, struct i2c_board_info *info); /*----------------------------------------------------------------------------*/ typedef enum { ADX_TRC_FILTER = 0x01, ADX_TRC_RAWDATA = 0x02, ADX_TRC_IOCTL = 0x04, ADX_TRC_CALI = 0X08, ADX_TRC_INFO = 0X10, } ADX_TRC; /*----------------------------------------------------------------------------*/ struct scale_factor{ u8 whole; u8 fraction; }; /*----------------------------------------------------------------------------*/ struct data_resolution { struct scale_factor scalefactor; int sensitivity; }; /*----------------------------------------------------------------------------*/ #define C_MAX_FIR_LENGTH (32) /*----------------------------------------------------------------------------*/ struct data_filter { s16 raw[C_MAX_FIR_LENGTH][BMA250_AXES_NUM]; int sum[BMA250_AXES_NUM]; int num; int idx; }; /*----------------------------------------------------------------------------*/ struct bma250_i2c_data { struct i2c_client *client; struct acc_hw *hw; struct hwmsen_convert cvt; /*misc*/ struct data_resolution *reso; atomic_t trace; atomic_t suspend; atomic_t selftest; atomic_t filter; s16 cali_sw[BMA250_AXES_NUM+1]; /*data*/ s8 offset[BMA250_AXES_NUM+1]; /*+1: for 4-byte alignment*/ s16 data[BMA250_AXES_NUM+1]; #if defined(CONFIG_BMA250_LOWPASS) atomic_t firlen; atomic_t fir_en; struct data_filter fir; #endif /*early suspend*/ #if defined(CONFIG_HAS_EARLYSUSPEND) struct early_suspend early_drv; #endif }; /*----------------------------------------------------------------------------*/ static struct i2c_driver bma250_i2c_driver = { .driver = { // .owner = THIS_MODULE, .name = BMA250_DEV_NAME, }, .probe = bma250_i2c_probe, .remove = bma250_i2c_remove, // .detect = bma250_i2c_detect, #if !defined(CONFIG_HAS_EARLYSUSPEND) .suspend = bma250_suspend, .resume = bma250_resume, #endif .id_table = bma250_i2c_id, // .address_data = &bma250_addr_data, }; /*----------------------------------------------------------------------------*/ static struct i2c_client *bma250_i2c_client = NULL; static struct platform_driver bma250_gsensor_driver; static struct bma250_i2c_data *obj_i2c_data = NULL; static bool sensor_power = true; static GSENSOR_VECTOR3D gsensor_gain; //static char selftestRes[8]= {0}; /*----------------------------------------------------------------------------*/ #define GSE_TAG "[Gsensor] " #define GSE_FUN(f) printk(KERN_INFO GSE_TAG"%s\n", __func__) #define GSE_ERR(fmt, args...) printk(KERN_ERR GSE_TAG"%s %d : "fmt, __func__, __LINE__, ##args) #define GSE_LOG(fmt, args...) printk(KERN_INFO GSE_TAG fmt, ##args) /*----------------------------------------------------------------------------*/ static struct data_resolution bma250_data_resolution[1] = { /* combination by {FULL_RES,RANGE}*/ {{ 3, 9}, 256}, // dataformat +/-2g in 8-bit resolution; { 15, 6} = 15.6= (2*2*1000)/(2^8); 64 = (2^8)/(2*2) }; /*----------------------------------------------------------------------------*/ static struct data_resolution bma250_offset_resolution = {{3, 9}, 256}; /*--------------------BMA250 power control function----------------------------------*/ static void BMA250_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, "BMA250")) { GSE_ERR("power on fails!!\n"); } } else // power off { if (!hwPowerDown(hw->power_id, "BMA250")) { GSE_ERR("power off fail!!\n"); } } } power_on = on; } /*----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------*/ static int BMA250_SetDataResolution(struct bma250_i2c_data *obj) { /*set g sensor dataresolution here*/ /*BMA250 only can set to 10-bit dataresolution, so do nothing in bma250 driver here*/ /*end of set dataresolution*/ /*we set measure range from -2g to +2g in BMA150_SetDataFormat(client, BMA150_RANGE_2G), and set 10-bit dataresolution BMA150_SetDataResolution()*/ /*so bma250_data_resolution[0] set value as {{ 3, 9}, 256} when declaration, and assign the value to obj->reso here*/ obj->reso = &bma250_data_resolution[0]; return 0; /*if you changed the measure range, for example call: BMA250_SetDataFormat(client, BMA150_RANGE_4G), you must set the right value to bma250_data_resolution*/ } /*----------------------------------------------------------------------------*/ static int BMA250_ReadData(struct i2c_client *client, s16 data[BMA250_AXES_NUM]) { struct bma250_i2c_data *priv = i2c_get_clientdata(client); u8 addr = BMA250_REG_DATAXLOW; u8 buf[BMA250_DATA_LEN] = {0}; int err = 0; int i; if(NULL == client) { err = -EINVAL; } else if((err = hwmsen_read_block(client, addr, buf, 0x06))) { GSE_ERR("error: %d\n", err); } else { data[BMA250_AXIS_X] = (s16)((buf[BMA250_AXIS_X*2] >> 6) | (buf[BMA250_AXIS_X*2+1] << 2)); data[BMA250_AXIS_Y] = (s16)((buf[BMA250_AXIS_Y*2] >> 6) | (buf[BMA250_AXIS_Y*2+1] << 2)); data[BMA250_AXIS_Z] = (s16)((buf[BMA250_AXIS_Z*2] >> 6) | (buf[BMA250_AXIS_Z*2+1] << 2)); for(i=0;i<3;i++) { //because the data is store in binary complement number formation in computer system if ( data[i] == 0x0200 ) //so we want to calculate actual number here data[i]= -512; //10bit resolution, 512= 2^(10-1) else if ( data[i] & 0x0200 )//transfor format { //printk("data 0 step %x \n",data[i]); data[i] -= 0x1; //printk("data 1 step %x \n",data[i]); data[i] = ~data[i]; //printk("data 2 step %x \n",data[i]); data[i] &= 0x01ff; //printk("data 3 step %x \n\n",data[i]); data[i] = -data[i]; } } if(atomic_read(&priv->trace) & ADX_TRC_RAWDATA) { GSE_LOG("[%08X %08X %08X] => [%5d %5d %5d] after\n", data[BMA250_AXIS_X], data[BMA250_AXIS_Y], data[BMA250_AXIS_Z], data[BMA250_AXIS_X], data[BMA250_AXIS_Y], data[BMA250_AXIS_Z]); } #ifdef CONFIG_BMA250_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][BMA250_AXIS_X] = data[BMA250_AXIS_X]; priv->fir.raw[priv->fir.num][BMA250_AXIS_Y] = data[BMA250_AXIS_Y]; priv->fir.raw[priv->fir.num][BMA250_AXIS_Z] = data[BMA250_AXIS_Z]; priv->fir.sum[BMA250_AXIS_X] += data[BMA250_AXIS_X]; priv->fir.sum[BMA250_AXIS_Y] += data[BMA250_AXIS_Y]; priv->fir.sum[BMA250_AXIS_Z] += data[BMA250_AXIS_Z]; if(atomic_read(&priv->trace) & ADX_TRC_FILTER) { GSE_LOG("add [%2d] [%5d %5d %5d] => [%5d %5d %5d]\n", priv->fir.num, priv->fir.raw[priv->fir.num][BMA250_AXIS_X], priv->fir.raw[priv->fir.num][BMA250_AXIS_Y], priv->fir.raw[priv->fir.num][BMA250_AXIS_Z], priv->fir.sum[BMA250_AXIS_X], priv->fir.sum[BMA250_AXIS_Y], priv->fir.sum[BMA250_AXIS_Z]); } priv->fir.num++; priv->fir.idx++; } else { idx = priv->fir.idx % firlen; priv->fir.sum[BMA250_AXIS_X] -= priv->fir.raw[idx][BMA250_AXIS_X]; priv->fir.sum[BMA250_AXIS_Y] -= priv->fir.raw[idx][BMA250_AXIS_Y]; priv->fir.sum[BMA250_AXIS_Z] -= priv->fir.raw[idx][BMA250_AXIS_Z]; priv->fir.raw[idx][BMA250_AXIS_X] = data[BMA250_AXIS_X]; priv->fir.raw[idx][BMA250_AXIS_Y] = data[BMA250_AXIS_Y]; priv->fir.raw[idx][BMA250_AXIS_Z] = data[BMA250_AXIS_Z]; priv->fir.sum[BMA250_AXIS_X] += data[BMA250_AXIS_X]; priv->fir.sum[BMA250_AXIS_Y] += data[BMA250_AXIS_Y]; priv->fir.sum[BMA250_AXIS_Z] += data[BMA250_AXIS_Z]; priv->fir.idx++; data[BMA250_AXIS_X] = priv->fir.sum[BMA250_AXIS_X]/firlen; data[BMA250_AXIS_Y] = priv->fir.sum[BMA250_AXIS_Y]/firlen; data[BMA250_AXIS_Z] = priv->fir.sum[BMA250_AXIS_Z]/firlen; if(atomic_read(&priv->trace) & ADX_TRC_FILTER) { GSE_LOG("add [%2d] [%5d %5d %5d] => [%5d %5d %5d] : [%5d %5d %5d]\n", idx, priv->fir.raw[idx][BMA250_AXIS_X], priv->fir.raw[idx][BMA250_AXIS_Y], priv->fir.raw[idx][BMA250_AXIS_Z], priv->fir.sum[BMA250_AXIS_X], priv->fir.sum[BMA250_AXIS_Y], priv->fir.sum[BMA250_AXIS_Z], data[BMA250_AXIS_X], data[BMA250_AXIS_Y], data[BMA250_AXIS_Z]); } } } } #endif } return err; } /*----------------------------------------------------------------------------*/ static int BMA250_ReadOffset(struct i2c_client *client, s8 ofs[BMA250_AXES_NUM]) { int err; #ifdef SW_CALIBRATION err = 0; ofs[0]=ofs[1]=ofs[2]=0x0; #else if(err = hwmsen_read_block(client, BMA250_REG_OFSX, ofs, BMA250_AXES_NUM)) { GSE_ERR("error: %d\n", err); } #endif //printk("offesx=%x, y=%x, z=%x",ofs[0],ofs[1],ofs[2]); return err; } /*----------------------------------------------------------------------------*/ static int BMA250_ResetCalibration(struct i2c_client *client) { struct bma250_i2c_data *obj = i2c_get_clientdata(client); #ifndef SW_CALIBRATION int err; u8 ofs[4]={0,0,0,0}; #endif #ifdef SW_CALIBRATION #else if(err = hwmsen_write_block(client, BMA250_REG_OFSX, ofs, 4)) { GSE_ERR("error: %d\n", err); return err; } #endif memset(obj->cali_sw, 0x00, sizeof(obj->cali_sw)); memset(obj->offset, 0x00, sizeof(obj->offset)); return 0; } /*----------------------------------------------------------------------------*/ static int BMA250_ReadCalibration(struct i2c_client *client, int dat[BMA250_AXES_NUM]) { struct bma250_i2c_data *obj = i2c_get_clientdata(client); #ifndef SW_CALIBRATION int err; #endif int mul; #ifdef SW_CALIBRATION mul = 0;//only SW Calibration, disable HW Calibration #else if ((err = BMA250_ReadOffset(client, obj->offset))) { GSE_ERR("read offset fail, %d\n", err); return err; } mul = obj->reso->sensitivity/bma250_offset_resolution.sensitivity; #endif dat[obj->cvt.map[BMA250_AXIS_X]] = obj->cvt.sign[BMA250_AXIS_X]*(obj->offset[BMA250_AXIS_X]*mul * GRAVITY_EARTH_1000 / obj->reso->sensitivity + obj->cali_sw[BMA250_AXIS_X]); dat[obj->cvt.map[BMA250_AXIS_Y]] = obj->cvt.sign[BMA250_AXIS_Y]*(obj->offset[BMA250_AXIS_Y]*mul * GRAVITY_EARTH_1000 / obj->reso->sensitivity + obj->cali_sw[BMA250_AXIS_Y]); dat[obj->cvt.map[BMA250_AXIS_Z]] = obj->cvt.sign[BMA250_AXIS_Z]*(obj->offset[BMA250_AXIS_Z]*mul * GRAVITY_EARTH_1000 / obj->reso->sensitivity + obj->cali_sw[BMA250_AXIS_Z]); return 0; } /*----------------------------------------------------------------------------*/ static int BMA250_ReadCalibrationEx(struct i2c_client *client, int act[BMA250_AXES_NUM], int raw[BMA250_AXES_NUM]) { /*raw: the raw calibration data; act: the actual calibration data*/ struct bma250_i2c_data *obj = i2c_get_clientdata(client); #ifndef SW_CALIBRATION int err; #endif int mul; #ifdef SW_CALIBRATION mul = 0;//only SW Calibration, disable HW Calibration #else if((err = BMA250_ReadOffset(client, obj->offset))) { GSE_ERR("read offset fail, %d\n", err); return err; } mul = obj->reso->sensitivity/bma250_offset_resolution.sensitivity; #endif raw[BMA250_AXIS_X] = obj->offset[BMA250_AXIS_X]*mul * GRAVITY_EARTH_1000 / obj->reso->sensitivity + obj->cali_sw[BMA250_AXIS_X]; raw[BMA250_AXIS_Y] = obj->offset[BMA250_AXIS_Y]*mul * GRAVITY_EARTH_1000 / obj->reso->sensitivity + obj->cali_sw[BMA250_AXIS_Y]; raw[BMA250_AXIS_Z] = obj->offset[BMA250_AXIS_Z]*mul * GRAVITY_EARTH_1000 / obj->reso->sensitivity + obj->cali_sw[BMA250_AXIS_Z]; act[obj->cvt.map[BMA250_AXIS_X]] = obj->cvt.sign[BMA250_AXIS_X]*raw[BMA250_AXIS_X]; act[obj->cvt.map[BMA250_AXIS_Y]] = obj->cvt.sign[BMA250_AXIS_Y]*raw[BMA250_AXIS_Y]; act[obj->cvt.map[BMA250_AXIS_Z]] = obj->cvt.sign[BMA250_AXIS_Z]*raw[BMA250_AXIS_Z]; return 0; } /*----------------------------------------------------------------------------*/ static int BMA250_WriteCalibration(struct i2c_client *client, int dat[BMA250_AXES_NUM]) { struct bma250_i2c_data *obj = i2c_get_clientdata(client); int err; int cali[BMA250_AXES_NUM], raw[BMA250_AXES_NUM]; #ifndef SW_CALIBRATION int lsb = bma250_offset_resolution.sensitivity; int divisor = obj->reso->sensitivity/lsb; #endif if((err = BMA250_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[BMA250_AXIS_X], raw[BMA250_AXIS_Y], raw[BMA250_AXIS_Z], obj->offset[BMA250_AXIS_X], obj->offset[BMA250_AXIS_Y], obj->offset[BMA250_AXIS_Z], obj->cali_sw[BMA250_AXIS_X], obj->cali_sw[BMA250_AXIS_Y], obj->cali_sw[BMA250_AXIS_Z]); /*calculate the real offset expected by caller*/ cali[BMA250_AXIS_X] += dat[BMA250_AXIS_X]; cali[BMA250_AXIS_Y] += dat[BMA250_AXIS_Y]; cali[BMA250_AXIS_Z] += dat[BMA250_AXIS_Z]; GSE_LOG("UPDATE: (%+3d %+3d %+3d)\n", dat[BMA250_AXIS_X], dat[BMA250_AXIS_Y], dat[BMA250_AXIS_Z]); #ifdef SW_CALIBRATION obj->cali_sw[BMA250_AXIS_X] = obj->cvt.sign[BMA250_AXIS_X]*(cali[obj->cvt.map[BMA250_AXIS_X]]); obj->cali_sw[BMA250_AXIS_Y] = obj->cvt.sign[BMA250_AXIS_Y]*(cali[obj->cvt.map[BMA250_AXIS_Y]]); obj->cali_sw[BMA250_AXIS_Z] = obj->cvt.sign[BMA250_AXIS_Z]*(cali[obj->cvt.map[BMA250_AXIS_Z]]); #else obj->offset[BMA250_AXIS_X] = (s8)(obj->cvt.sign[BMA250_AXIS_X]*(cali[obj->cvt.map[BMA250_AXIS_X]]) * obj->reso->sensitivity / GRAVITY_EARTH_1000/(divisor)); obj->offset[BMA250_AXIS_Y] = (s8)(obj->cvt.sign[BMA250_AXIS_Y]*(cali[obj->cvt.map[BMA250_AXIS_Y]]) * obj->reso->sensitivity / GRAVITY_EARTH_1000/(divisor)); obj->offset[BMA250_AXIS_Z] = (s8)(obj->cvt.sign[BMA250_AXIS_Z]*(cali[obj->cvt.map[BMA250_AXIS_Z]]) * obj->reso->sensitivity / GRAVITY_EARTH_1000/(divisor)); /*convert software calibration using standard calibration*/ obj->cali_sw[BMA250_AXIS_X] = obj->cvt.sign[BMA250_AXIS_X]*(cali[obj->cvt.map[BMA250_AXIS_X]])%(divisor); obj->cali_sw[BMA250_AXIS_Y] = obj->cvt.sign[BMA250_AXIS_Y]*(cali[obj->cvt.map[BMA250_AXIS_Y]])%(divisor); obj->cali_sw[BMA250_AXIS_Z] = obj->cvt.sign[BMA250_AXIS_Z]*(cali[obj->cvt.map[BMA250_AXIS_Z]])%(divisor); GSE_LOG("NEWOFF: (%+3d %+3d %+3d): (%+3d %+3d %+3d) / (%+3d %+3d %+3d)\n", obj->offset[BMA250_AXIS_X]*divisor + obj->cali_sw[BMA250_AXIS_X], obj->offset[BMA250_AXIS_Y]*divisor + obj->cali_sw[BMA250_AXIS_Y], obj->offset[BMA250_AXIS_Z]*divisor + obj->cali_sw[BMA250_AXIS_Z], obj->offset[BMA250_AXIS_X], obj->offset[BMA250_AXIS_Y], obj->offset[BMA250_AXIS_Z], obj->cali_sw[BMA250_AXIS_X], obj->cali_sw[BMA250_AXIS_Y], obj->cali_sw[BMA250_AXIS_Z]); if(err = hwmsen_write_block(obj->client, BMA250_REG_OFSX, obj->offset, BMA250_AXES_NUM)) { GSE_ERR("write offset fail: %d\n", err); return err; } #endif return err; } /*----------------------------------------------------------------------------*/ static int BMA250_CheckDeviceID(struct i2c_client *client) { u8 databuf[2]; int res = 0; memset(databuf, 0, sizeof(u8)*2); databuf[0] = BMA250_REG_DEVID; res = i2c_master_send(client, databuf, 0x1); if(res <= 0) { goto exit_BMA250_CheckDeviceID; } udelay(500); databuf[0] = 0x0; res = i2c_master_recv(client, databuf, 0x01); if(res <= 0) { goto exit_BMA250_CheckDeviceID; } if(databuf[0]!=BMA250_FIXED_DEVID) { printk("BMA250_CheckDeviceID %d failt!\n ", databuf[0]); return BMA250_ERR_IDENTIFICATION; } else { printk("BMA250_CheckDeviceID %d pass!\n ", databuf[0]); } exit_BMA250_CheckDeviceID: if (res <= 0) { return BMA250_ERR_I2C; } return BMA250_SUCCESS; } /*----------------------------------------------------------------------------*/ static int BMA250_SetPowerMode(struct i2c_client *client, bool enable) { u8 databuf[2]; int res = 0; u8 addr = BMA250_REG_POWER_CTL; struct bma250_i2c_data *obj = i2c_get_clientdata(client); if(enable == sensor_power ) { GSE_LOG("Sensor power status is newest!\n"); return BMA250_SUCCESS; } if(hwmsen_read_block(client, addr, databuf, 0x01)) { GSE_ERR("read power ctl register err!\n"); return BMA250_ERR_I2C; } if(enable == TRUE) { databuf[0] &= ~BMA250_MEASURE_MODE; } else { databuf[0] |= BMA250_MEASURE_MODE; } databuf[1] = databuf[0]; databuf[0] = BMA250_REG_POWER_CTL; res = i2c_master_send(client, databuf, 0x2); if(res <= 0) { GSE_LOG("set power mode failed!\n"); return BMA250_ERR_I2C; } else if(atomic_read(&obj->trace) & ADX_TRC_INFO) { GSE_LOG("set power mode ok %d!\n", databuf[1]); } //GSE_LOG("BMA250_SetPowerMode ok!\n"); sensor_power = enable; mdelay(20); return BMA250_SUCCESS; } /*----------------------------------------------------------------------------*/ static int BMA250_SetDataFormat(struct i2c_client *client, u8 dataformat) { struct bma250_i2c_data *obj = i2c_get_clientdata(client); u8 databuf[10]; int res = 0; memset(databuf, 0, sizeof(u8)*10); if(hwmsen_read_block(client, BMA250_REG_DATA_FORMAT, databuf, 0x01)) { printk("bma250 read Dataformat failt \n"); return BMA250_ERR_I2C; } databuf[0] &= ~BMA250_RANGE_MASK; databuf[0] |= dataformat; databuf[1] = databuf[0]; databuf[0] = BMA250_REG_DATA_FORMAT; res = i2c_master_send(client, databuf, 0x2); if(res <= 0) { return BMA250_ERR_I2C; } //printk("BMA250_SetDataFormat OK! \n"); return BMA250_SetDataResolution(obj); } /*----------------------------------------------------------------------------*/ static int BMA250_SetBWRate(struct i2c_client *client, u8 bwrate) { u8 databuf[10]; int res = 0; memset(databuf, 0, sizeof(u8)*10); if(hwmsen_read_block(client, BMA250_REG_BW_RATE, databuf, 0x01)) { printk("bma250 read rate failt \n"); return BMA250_ERR_I2C; } databuf[0] &= ~BMA250_BW_MASK; databuf[0] |= bwrate; databuf[1] = databuf[0]; databuf[0] = BMA250_REG_BW_RATE; res = i2c_master_send(client, databuf, 0x2); if(res <= 0) { return BMA250_ERR_I2C; } //printk("BMA250_SetBWRate OK! \n"); return BMA250_SUCCESS; } /*----------------------------------------------------------------------------*/ static int BMA250_SetIntEnable(struct i2c_client *client, u8 intenable) { // u8 databuf[10]; int res = 0; res = hwmsen_write_byte(client, BMA250_INT_REG_1, 0x00); if(res != BMA250_SUCCESS) { return res; } res = hwmsen_write_byte(client, BMA250_INT_REG_2, 0x00); if(res != BMA250_SUCCESS) { return res; } printk("BMA250 disable interrupt ...\n"); /*for disable interrupt function*/ return BMA250_SUCCESS; } /*----------------------------------------------------------------------------*/ static int bma250_init_client(struct i2c_client *client, int reset_cali) { struct bma250_i2c_data *obj = i2c_get_clientdata(client); int res = 0; printk("bma250_init_client \n"); res = BMA250_CheckDeviceID(client); if(res != BMA250_SUCCESS) { return res; } printk("BMA250_CheckDeviceID ok \n"); res = BMA250_SetBWRate(client, BMA250_BW_100HZ); if(res != BMA250_SUCCESS ) { return res; } printk("BMA250_SetBWRate OK!\n"); res = BMA250_SetDataFormat(client, BMA250_RANGE_2G); if(res != BMA250_SUCCESS) { return res; } printk("BMA250_SetDataFormat OK!\n"); gsensor_gain.x = gsensor_gain.y = gsensor_gain.z = obj->reso->sensitivity; res = BMA250_SetIntEnable(client, 0x00); if(res != BMA250_SUCCESS) { return res; } printk("BMA250 disable interrupt function!\n"); res = BMA250_SetPowerMode(client, false); if(res != BMA250_SUCCESS) { return res; } printk("BMA250_SetPowerMode OK!\n"); if(0 != reset_cali) { /*reset calibration only in power on*/ res = BMA250_ResetCalibration(client); if(res != BMA250_SUCCESS) { return res; } } printk("bma250_init_client OK!\n"); #ifdef CONFIG_BMA250_LOWPASS memset(&obj->fir, 0x00, sizeof(obj->fir)); #endif mdelay(20); return BMA250_SUCCESS; } /*----------------------------------------------------------------------------*/ static int BMA250_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, "BMA250 Chip"); return 0; } /*----------------------------------------------------------------------------*/ static int BMA250_ReadSensorData(struct i2c_client *client, char *buf, int bufsize) { struct bma250_i2c_data *obj = (struct bma250_i2c_data*)i2c_get_clientdata(client); u8 databuf[20]; int acc[BMA250_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 = BMA250_SetPowerMode(client, true); if(res) { GSE_ERR("Power on bma250 error %d!\n", res); } } if((res = BMA250_ReadData(client, obj->data))) { GSE_ERR("I2C error: ret value=%d", res); return -3; } else { #if 1 obj->data[BMA250_AXIS_X] = obj->data[BMA250_AXIS_X] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; obj->data[BMA250_AXIS_Y] = obj->data[BMA250_AXIS_Y] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; obj->data[BMA250_AXIS_Z] = obj->data[BMA250_AXIS_Z] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; #endif //printk("raw data x=%d, y=%d, z=%d \n",obj->data[BMA150_AXIS_X],obj->data[BMA150_AXIS_Y],obj->data[BMA150_AXIS_Z]); obj->data[BMA250_AXIS_X] += obj->cali_sw[BMA250_AXIS_X]; obj->data[BMA250_AXIS_Y] += obj->cali_sw[BMA250_AXIS_Y]; obj->data[BMA250_AXIS_Z] += obj->cali_sw[BMA250_AXIS_Z]; //printk("cali_sw x=%d, y=%d, z=%d \n",obj->cali_sw[BMA150_AXIS_X],obj->cali_sw[BMA150_AXIS_Y],obj->cali_sw[BMA150_AXIS_Z]); /*remap coordinate*/ acc[obj->cvt.map[BMA250_AXIS_X]] = obj->cvt.sign[BMA250_AXIS_X]*obj->data[BMA250_AXIS_X]; acc[obj->cvt.map[BMA250_AXIS_Y]] = obj->cvt.sign[BMA250_AXIS_Y]*obj->data[BMA250_AXIS_Y]; acc[obj->cvt.map[BMA250_AXIS_Z]] = obj->cvt.sign[BMA250_AXIS_Z]*obj->data[BMA250_AXIS_Z]; //printk("cvt x=%d, y=%d, z=%d \n",obj->cvt.sign[BMA150_AXIS_X],obj->cvt.sign[BMA150_AXIS_Y],obj->cvt.sign[BMA150_AXIS_Z]); //GSE_LOG("Mapped gsensor data: %d, %d, %d!\n", acc[BMA150_AXIS_X], acc[BMA150_AXIS_Y], acc[BMA150_AXIS_Z]); //Out put the mg //printk("mg acc=%d, GRAVITY=%d, sensityvity=%d \n",acc[BMA150_AXIS_X],GRAVITY_EARTH_1000,obj->reso->sensitivity); #if 0 acc[BMA250_AXIS_X] = acc[BMA250_AXIS_X] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; acc[BMA250_AXIS_Y] = acc[BMA250_AXIS_Y] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; acc[BMA250_AXIS_Z] = acc[BMA250_AXIS_Z] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; #endif sprintf(buf, "%04x %04x %04x", acc[BMA250_AXIS_X], acc[BMA250_AXIS_Y], acc[BMA250_AXIS_Z]); if(atomic_read(&obj->trace) & ADX_TRC_IOCTL) { GSE_LOG("gsensor data: %s!\n", buf); } } return 0; } /*----------------------------------------------------------------------------*/ static int BMA250_ReadRawData(struct i2c_client *client, char *buf) { struct bma250_i2c_data *obj = (struct bma250_i2c_data*)i2c_get_clientdata(client); int res = 0; if (!buf || !client) { return EINVAL; } if((res = BMA250_ReadData(client, obj->data))) { GSE_ERR("I2C error: ret value=%d", res); return EIO; } else { sprintf(buf, "BMA250_ReadRawData %04x %04x %04x", obj->data[BMA250_AXIS_X], obj->data[BMA250_AXIS_Y], obj->data[BMA250_AXIS_Z]); } return 0; } /*----------------------------------------------------------------------------*/ static ssize_t show_chipinfo_value(struct device_driver *ddri, char *buf) { struct i2c_client *client = bma250_i2c_client; char strbuf[BMA250_BUFSIZE]; if(NULL == client) { GSE_ERR("i2c client is null!!\n"); return 0; } BMA250_ReadChipInfo(client, strbuf, BMA250_BUFSIZE); return snprintf(buf, PAGE_SIZE, "%s\n", strbuf); } /* static ssize_t gsensor_init(struct device_driver *ddri, char *buf, size_t count) { struct i2c_client *client = bma250_i2c_client; char strbuf[BMA250_BUFSIZE]; if(NULL == client) { GSE_ERR("i2c client is null!!\n"); return 0; } bma250_init_client(client, 1); return snprintf(buf, PAGE_SIZE, "%s\n", strbuf); } */ /*----------------------------------------------------------------------------*/ static ssize_t show_sensordata_value(struct device_driver *ddri, char *buf) { struct i2c_client *client = bma250_i2c_client; char strbuf[BMA250_BUFSIZE]; if(NULL == client) { GSE_ERR("i2c client is null!!\n"); return 0; } BMA250_ReadSensorData(client, strbuf, BMA250_BUFSIZE); //BMA150_ReadRawData(client, strbuf); return snprintf(buf, PAGE_SIZE, "%s\n", strbuf); } /* static ssize_t show_sensorrawdata_value(struct device_driver *ddri, char *buf, size_t count) { struct i2c_client *client = bma250_i2c_client; char strbuf[BMA250_BUFSIZE]; if(NULL == client) { GSE_ERR("i2c client is null!!\n"); return 0; } //BMA150_ReadSensorData(client, strbuf, BMA150_BUFSIZE); BMA250_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 = bma250_i2c_client; struct bma250_i2c_data *obj; int err, len = 0, mul; int tmp[BMA250_AXES_NUM]; if(NULL == client) { GSE_ERR("i2c client is null!!\n"); return 0; } obj = i2c_get_clientdata(client); if((err = BMA250_ReadOffset(client, obj->offset))) { return -EINVAL; } else if((err = BMA250_ReadCalibration(client, tmp))) { return -EINVAL; } else { mul = obj->reso->sensitivity/bma250_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[BMA250_AXIS_X], obj->offset[BMA250_AXIS_Y], obj->offset[BMA250_AXIS_Z], obj->offset[BMA250_AXIS_X], obj->offset[BMA250_AXIS_Y], obj->offset[BMA250_AXIS_Z]); len += snprintf(buf+len, PAGE_SIZE-len, "[SW ][%d] (%+3d, %+3d, %+3d)\n", 1, obj->cali_sw[BMA250_AXIS_X], obj->cali_sw[BMA250_AXIS_Y], obj->cali_sw[BMA250_AXIS_Z]); len += snprintf(buf+len, PAGE_SIZE-len, "[ALL] (%+3d, %+3d, %+3d) : (%+3d, %+3d, %+3d)\n", obj->offset[BMA250_AXIS_X]*mul + obj->cali_sw[BMA250_AXIS_X], obj->offset[BMA250_AXIS_Y]*mul + obj->cali_sw[BMA250_AXIS_Y], obj->offset[BMA250_AXIS_Z]*mul + obj->cali_sw[BMA250_AXIS_Z], tmp[BMA250_AXIS_X], tmp[BMA250_AXIS_Y], tmp[BMA250_AXIS_Z]); return len; } } /*----------------------------------------------------------------------------*/ static ssize_t store_cali_value(struct device_driver *ddri, const char *buf, size_t count) { struct i2c_client *client = bma250_i2c_client; int err, x, y, z; int dat[BMA250_AXES_NUM]; if(!strncmp(buf, "rst", 3)) { if((err = BMA250_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[BMA250_AXIS_X] = x; dat[BMA250_AXIS_Y] = y; dat[BMA250_AXIS_Z] = z; if((err = BMA250_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_BMA250_LOWPASS struct i2c_client *client = bma250_i2c_client; struct bma250_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][BMA250_AXIS_X], obj->fir.raw[idx][BMA250_AXIS_Y], obj->fir.raw[idx][BMA250_AXIS_Z]); } GSE_LOG("sum = [%5d %5d %5d]\n", obj->fir.sum[BMA250_AXIS_X], obj->fir.sum[BMA250_AXIS_Y], obj->fir.sum[BMA250_AXIS_Z]); GSE_LOG("avg = [%5d %5d %5d]\n", obj->fir.sum[BMA250_AXIS_X]/len, obj->fir.sum[BMA250_AXIS_Y]/len, obj->fir.sum[BMA250_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_BMA250_LOWPASS struct i2c_client *client = bma250_i2c_client; struct bma250_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 bma250_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 bma250_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 bma250_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(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 *bma250_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, }; /*----------------------------------------------------------------------------*/ static int bma250_create_attr(struct device_driver *driver) { int idx, err = 0; int num = (int)(sizeof(bma250_attr_list)/sizeof(bma250_attr_list[0])); if (driver == NULL) { return -EINVAL; } for(idx = 0; idx < num; idx++) { if((err = driver_create_file(driver, bma250_attr_list[idx]))) { GSE_ERR("driver_create_file (%s) = %d\n", bma250_attr_list[idx]->attr.name, err); break; } } return err; } /*----------------------------------------------------------------------------*/ static int bma250_delete_attr(struct device_driver *driver) { int idx ,err = 0; int num = (int)(sizeof(bma250_attr_list)/sizeof(bma250_attr_list[0])); if(driver == NULL) { return -EINVAL; } for(idx = 0; idx < num; idx++) { driver_remove_file(driver, bma250_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 bma250_i2c_data *priv = (struct bma250_i2c_data*)self; hwm_sensor_data* gsensor_data; char buff[BMA250_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 = BMA250_BW_200HZ; } else if(value <= 10) { sample_delay = BMA250_BW_100HZ; } else { sample_delay = BMA250_BW_50HZ; } err = BMA250_SetBWRate(priv->client, sample_delay); if(err != BMA250_SUCCESS ) //0x2C->BW=100Hz { GSE_ERR("Set delay parameter error!\n"); } if(value >= 50) { atomic_set(&priv->filter, 0); } else { #if defined(CONFIG_BMA250_LOWPASS) priv->fir.num = 0; priv->fir.idx = 0; priv->fir.sum[BMA250_AXIS_X] = 0; priv->fir.sum[BMA250_AXIS_Y] = 0; priv->fir.sum[BMA250_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; if(((value == 0) && (sensor_power == false)) ||((value == 1) && (sensor_power == true))) { GSE_LOG("Gsensor device have updated!\n"); } else { err = BMA250_SetPowerMode( priv->client, !sensor_power); } } 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 { gsensor_data = (hwm_sensor_data *)buff_out; BMA250_ReadSensorData(priv->client, buff, BMA250_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; } break; default: GSE_ERR("gsensor operate function no this parameter %d!\n", command); err = -1; break; } return err; } /****************************************************************************** * Function Configuration ******************************************************************************/ static int bma250_open(struct inode *inode, struct file *file) { file->private_data = bma250_i2c_client; if(file->private_data == NULL) { GSE_ERR("null pointer!!\n"); return -EINVAL; } return nonseekable_open(inode, file); } /*----------------------------------------------------------------------------*/ static int bma250_release(struct inode *inode, struct file *file) { file->private_data = NULL; return 0; } /*----------------------------------------------------------------------------*/ //static int bma250_ioctl(struct inode *inode, struct file *file, unsigned int cmd, // unsigned long arg) static long bma250_unlocked_ioctl(struct file *file, unsigned int cmd,unsigned long arg) { struct i2c_client *client = (struct i2c_client*)file->private_data; struct bma250_i2c_data *obj = (struct bma250_i2c_data*)i2c_get_clientdata(client); char strbuf[BMA250_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: bma250_init_client(client, 0); break; case GSENSOR_IOCTL_READ_CHIPINFO: data = (void __user *) arg; if(data == NULL) { err = -EINVAL; break; } BMA250_ReadChipInfo(client, strbuf, BMA250_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; } BMA250_ReadSensorData(client, strbuf, BMA250_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; } BMA250_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[BMA250_AXIS_X] = sensor_data.x * obj->reso->sensitivity / GRAVITY_EARTH_1000; cali[BMA250_AXIS_Y] = sensor_data.y * obj->reso->sensitivity / GRAVITY_EARTH_1000; cali[BMA250_AXIS_Z] = sensor_data.z * obj->reso->sensitivity / GRAVITY_EARTH_1000; #else cali[BMA250_AXIS_X] = sensor_data.x; cali[BMA250_AXIS_Y] = sensor_data.y; cali[BMA250_AXIS_Z] = sensor_data.z; #endif err = BMA250_WriteCalibration(client, cali); } break; case GSENSOR_IOCTL_CLR_CALI: err = BMA250_ResetCalibration(client); break; case GSENSOR_IOCTL_GET_CALI: data = (void __user*)arg; if(data == NULL) { err = -EINVAL; break; } if((err = BMA250_ReadCalibration(client, cali))) { break; } #if 0 sensor_data.x = cali[BMA250_AXIS_X] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; sensor_data.y = cali[BMA250_AXIS_Y] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; sensor_data.z = cali[BMA250_AXIS_Z] * GRAVITY_EARTH_1000 / obj->reso->sensitivity; #else sensor_data.x = cali[BMA250_AXIS_X]; sensor_data.y = cali[BMA250_AXIS_Y]; sensor_data.z = cali[BMA250_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 bma250_fops = { //.owner = THIS_MODULE, .open = bma250_open, .release = bma250_release, .unlocked_ioctl = bma250_unlocked_ioctl, }; /*----------------------------------------------------------------------------*/ static struct miscdevice bma250_device = { .minor = MISC_DYNAMIC_MINOR, .name = "gsensor", .fops = &bma250_fops, }; /*----------------------------------------------------------------------------*/ #ifndef CONFIG_HAS_EARLYSUSPEND /*----------------------------------------------------------------------------*/ static int bma250_suspend(struct i2c_client *client, pm_message_t msg) { struct bma250_i2c_data *obj = i2c_get_clientdata(client); int err = 0; GSE_FUN(); if(msg.event == PM_EVENT_SUSPEND) { if(obj == NULL) { GSE_ERR("null pointer!!\n"); return -EINVAL; } atomic_set(&obj->suspend, 1); if(err = BMA250_SetPowerMode(obj->client, false)) { GSE_ERR("write power control fail!!\n"); return; } BMA250_power(obj->hw, 0); } return err; } /*----------------------------------------------------------------------------*/ static int bma250_resume(struct i2c_client *client) { struct bma250_i2c_data *obj = i2c_get_clientdata(client); int err; GSE_FUN(); if(obj == NULL) { GSE_ERR("null pointer!!\n"); return -EINVAL; } BMA250_power(obj->hw, 1); if(err = bma250_init_client(client, 0)) { GSE_ERR("initialize client fail!!\n"); return err; } atomic_set(&obj->suspend, 0); return 0; } /*----------------------------------------------------------------------------*/ #else /*CONFIG_HAS_EARLY_SUSPEND is defined*/ /*----------------------------------------------------------------------------*/ static void bma250_early_suspend(struct early_suspend *h) { struct bma250_i2c_data *obj = container_of(h, struct bma250_i2c_data, early_drv); int err; GSE_FUN(); if(obj == NULL) { GSE_ERR("null pointer!!\n"); return; } atomic_set(&obj->suspend, 1); if((err = BMA250_SetPowerMode(obj->client, false))) { GSE_ERR("write power control fail!!\n"); return; } sensor_power = false; BMA250_power(obj->hw, 0); } /*----------------------------------------------------------------------------*/ static void bma250_late_resume(struct early_suspend *h) { struct bma250_i2c_data *obj = container_of(h, struct bma250_i2c_data, early_drv); int err; GSE_FUN(); if(obj == NULL) { GSE_ERR("null pointer!!\n"); return; } BMA250_power(obj->hw, 1); if((err = bma250_init_client(obj->client, 0))) { GSE_ERR("initialize client fail!!\n"); return; } atomic_set(&obj->suspend, 0); } /*----------------------------------------------------------------------------*/ #endif /*CONFIG_HAS_EARLYSUSPEND*/ /*----------------------------------------------------------------------------*/ //static int bma250_i2c_detect(struct i2c_client *client, int kind, struct i2c_board_info *info) //{ // strcpy(info->type, BMA250_DEV_NAME); // return 0; //} /*----------------------------------------------------------------------------*/ static int bma250_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_client *new_client; struct bma250_i2c_data *obj; struct hwmsen_object sobj; int err = 0; GSE_FUN(); if(!(obj = kzalloc(sizeof(*obj), GFP_KERNEL))) { err = -ENOMEM; goto exit; } memset(obj, 0, sizeof(struct bma250_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_BMA250_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 bma250_i2c_client = new_client; if((err = bma250_init_client(new_client, 1))) { goto exit_init_failed; } if((err = misc_register(&bma250_device))) { GSE_ERR("bma250_device register failed\n"); goto exit_misc_device_register_failed; } if((err = bma250_create_attr(&bma250_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 CONFIG_HAS_EARLYSUSPEND obj->early_drv.level = EARLY_SUSPEND_LEVEL_DISABLE_FB - 1, obj->early_drv.suspend = bma250_early_suspend, obj->early_drv.resume = bma250_late_resume, register_early_suspend(&obj->early_drv); #endif GSE_LOG("%s: OK\n", __func__); return 0; exit_create_attr_failed: misc_deregister(&bma250_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 bma250_i2c_remove(struct i2c_client *client) { int err = 0; if((err = bma250_delete_attr(&bma250_gsensor_driver.driver))) { GSE_ERR("bma150_delete_attr fail: %d\n", err); } if((err = misc_deregister(&bma250_device))) { GSE_ERR("misc_deregister fail: %d\n", err); } if((err = hwmsen_detach(ID_ACCELEROMETER))) bma250_i2c_client = NULL; i2c_unregister_device(client); kfree(i2c_get_clientdata(client)); return 0; } /*----------------------------------------------------------------------------*/ static int bma250_probe(struct platform_device *pdev) { struct acc_hw *hw = get_cust_acc_hw(); GSE_FUN(); BMA250_power(hw, 1); //bma250_force[0] = hw->i2c_num; if(i2c_add_driver(&bma250_i2c_driver)) { GSE_ERR("add driver error\n"); return -1; } return 0; } /*----------------------------------------------------------------------------*/ static int bma250_remove(struct platform_device *pdev) { struct acc_hw *hw = get_cust_acc_hw(); GSE_FUN(); BMA250_power(hw, 0); i2c_del_driver(&bma250_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 bma250_gsensor_driver = { .probe = bma250_probe, .remove = bma250_remove, .driver = { .name = "gsensor", // .owner = THIS_MODULE, #ifdef CONFIG_OF .of_match_table = gsensor_of_match, #endif } }; #else static struct platform_driver bma250_gsensor_driver = { .probe = bma250_probe, .remove = bma250_remove, .driver = { .name = "gsensor", //.owner = THIS_MODULE, } }; #endif /*----------------------------------------------------------------------------*/ static int __init bma250_init(void) { struct acc_hw *hw = get_cust_acc_hw(); GSE_FUN(); GSE_LOG("%s: i2c_number=%d\n", __func__,hw->i2c_num); i2c_register_board_info(hw->i2c_num, &i2c_bma250, 1); if(platform_driver_register(&bma250_gsensor_driver)) { GSE_ERR("failed to register driver"); return -ENODEV; } return 0; } /*----------------------------------------------------------------------------*/ static void __exit bma250_exit(void) { GSE_FUN(); platform_driver_unregister(&bma250_gsensor_driver); } /*----------------------------------------------------------------------------*/ module_init(bma250_init); module_exit(bma250_exit); /*----------------------------------------------------------------------------*/ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("BMA250 I2C driver"); MODULE_AUTHOR("Xiaoli.li@mediatek.com");