/* drivers/input/sensors/access/dmard10.c * * Copyright (C) 2012-2015 Rockchip Electronics Co., Ltd. * Author: guoyi * * 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 #ifdef CONFIG_HAS_EARLYSUSPEND #include #endif #include /* Default register settings */ #define RBUFF_SIZE 12 /* Rx buffer size */ #define REG_ACTR 0x00 #define REG_WDAL 0x01 #define REG_TAPNS 0x0f #define REG_MISC2 0x1f #define REG_AFEM 0x0c #define REG_CKSEL 0x0d #define REG_INTC 0x0e #define REG_STADR 0x12 #define REG_STAINT 0x1C #define REG_PD 0x21 #define REG_TCGYZ 0x26 #define REG_X_OUT 0x41 #define MODE_Off 0x00 #define MODE_ResetAtOff 0x01 #define MODE_Standby 0x02 #define MODE_ResetAtStandby 0x03 #define MODE_Active 0x06 #define MODE_Trigger 0x0a #define MODE_ReadOTP 0x12 #define MODE_WriteOTP 0x22 #define MODE_WriteOTPBuf 0x42 #define MODE_ResetDataPath 0x82 #define VALUE_STADR 0x55 #define VALUE_STAINT 0xAA #define VALUE_AFEM_AFEN_Normal 0x8f// AFEN set 1 , ATM[2:0]=b'000(normal),EN_Z/Y/X/T=1 #define VALUE_AFEM_Normal 0x0f// AFEN set 0 , ATM[2:0]=b'000(normal),EN_Z/Y/X/T=1 #define VALUE_INTC 0x00// INTC[6:5]=b'00 #define VALUE_INTC_Interrupt_En 0x20// INTC[6:5]=b'01 (Data ready interrupt enable, active high at INT0) #define VALUE_CKSEL_ODR_0_204 0x04// ODR[3:0]=b'0000 (0.78125Hz), CCK[3:0]=b'0100 (204.8kHZ) #define VALUE_CKSEL_ODR_1_204 0x14// ODR[3:0]=b'0001 (1.5625Hz), CCK[3:0]=b'0100 (204.8kHZ) #define VALUE_CKSEL_ODR_3_204 0x24// ODR[3:0]=b'0010 (3.125Hz), CCK[3:0]=b'0100 (204.8kHZ) #define VALUE_CKSEL_ODR_6_204 0x34// ODR[3:0]=b'0011 (6.25Hz), CCK[3:0]=b'0100 (204.8kHZ) #define VALUE_CKSEL_ODR_12_204 0x44// ODR[3:0]=b'0100 (12.5Hz), CCK[3:0]=b'0100 (204.8kHZ) #define VALUE_CKSEL_ODR_25_204 0x54// ODR[3:0]=b'0101 (25Hz), CCK[3:0]=b'0100 (204.8kHZ) #define VALUE_CKSEL_ODR_50_204 0x64// ODR[3:0]=b'0110 (50Hz), CCK[3:0]=b'0100 (204.8kHZ) #define VALUE_CKSEL_ODR_100_204 0x74// ODR[3:0]=b'0111 (100Hz), CCK[3:0]=b'0100 (204.8kHZ) #define VALUE_TAPNS_NoFilter 0x00 // TAP1/TAP2 NO FILTER #define VALUE_TAPNS_Ave_2 0x11 // TAP1/TAP2 Average 2 #define VALUE_TAPNS_Ave_4 0x22 // TAP1/TAP2 Average 4 #define VALUE_TAPNS_Ave_8 0x33 // TAP1/TAP2 Average 8 #define VALUE_TAPNS_Ave_16 0x44 // TAP1/TAP2 Average 16 #define VALUE_TAPNS_Ave_32 0x55 // TAP1/TAP2 Average 32 #define VALUE_MISC2_OSCA_EN 0x08 #define VALUE_PD_RST 0x52 //#define DMARD10_REG_INTSU 0x47 //#define DMARD10_REG_MODE 0x44 //#define DMARD10_REG_SR 0x44 #define DMARD10_REG_DS 0X49 #define DMARD10_REG_ID 0X0F #define DMARD10_REG_IT 0X4D #define DMARD10_REG_INTSRC1_C 0X4A #define DMARD10_REG_INTSRC1_S 0X4B #define MMAIO 0xA1 // IOCTLs for DMARD10 library #define ECS_IOCTL_INIT _IO(MMAIO, 0x01) #define ECS_IOCTL_RESET _IO(MMAIO, 0x04) #define ECS_IOCTL_CLOSE _IO(MMAIO, 0x02) #define ECS_IOCTL_START _IO(MMAIO, 0x03) #define ECS_IOCTL_GETDATA _IOR(MMAIO, 0x08, char[RBUFF_SIZE+1]) #define SENSOR_CALIBRATION _IOWR(MMAIO, 0x05 , int[SENSOR_DATA_SIZE]) // IOCTLs for APPs #define ECS_IOCTL_APP_SET_RATE _IOW(MMAIO, 0x10, char) //rate #define DMARD10_RATE_32 32 /* #define DMARD10_RATE_64 64 #define DMARD10_RATE_120 128 #define DMARD10_RATE_MIN DMARD10_RATE_1 #define DMARD10_RATE_MAX DMARD10_RATE_120 */ /*status*/ #define DMARD10_OPEN 1 #define DMARD10_CLOSE 0 #define DMARD10_NORMAL 2 #define DMARD10_LOWPOWER 3 #define DMARD10_IIC_ADDR 0x18 #define DMARD10_REG_LEN 11 #define DMARD10_FATOR 15 #define DMARD10_X_OUT 0x41 #define SENSOR_DATA_SIZE 3 #define DMARD10_SENSOR_RATE_1 0 #define DMARD10_SENSOR_RATE_2 1 #define DMARD10_SENSOR_RATE_3 2 #define DMARD10_SENSOR_RATE_4 3 #define POWER_OR_RATE 1 #define SW_RESET 1 #define DMARD10_INTERRUPUT 1 #define DMARD10_POWERDOWN 0 #define DMARD10_POWERON 1 //g-senor layout configuration, choose one of the following configuration #define AVG_NUM 16 #define SENSOR_DATA_SIZE 3 #define DEFAULT_SENSITIVITY 1024 #define DMARD10_ENABLE 1 #define DMARD10_REG_X_OUT 0x12 #define DMARD10_REG_Y_OUT 0x1 #define DMARD10_REG_Z_OUT 0x2 #define DMARD10_REG_TILT 0x3 #define DMARD10_REG_SRST 0x4 #define DMARD10_REG_SPCNT 0x5 #define DMARD10_REG_INTSU 0x6 #define DMARD10_REG_MODE 0x7 #define DMARD10_REG_SR 0x8 #define DMARD10_REG_PDET 0x9 #define DMARD10_REG_PD 0xa #define DMARD10_RANGE 4000000 #define DMARD10_PRECISION 10 #define DMARD10_BOUNDARY (0x1 << (DMARD10_PRECISION - 1)) #define DMARD10_GRAVITY_STEP (DMARD10_RANGE / DMARD10_BOUNDARY) struct sensor_axis_average { int x_average; int y_average; int z_average; int count; }; static struct sensor_axis_average axis_average; int gsensor_reset(struct i2c_client *client){ char buffer[7], buffer2[2]; /* 1. check D10 , VALUE_STADR = 0x55 , VALUE_STAINT = 0xAA */ buffer[0] = REG_STADR; buffer2[0] = REG_STAINT; sensor_rx_data(client, buffer, 2); sensor_rx_data(client, buffer2, 2); if( buffer[0] == VALUE_STADR || buffer2[0] == VALUE_STAINT){ DBG(KERN_INFO " REG_STADR_VALUE = %d , REG_STAINT_VALUE = %d\n", buffer[0], buffer2[0]); DBG(KERN_INFO " %s DMT_DEVICE_NAME registered I2C driver!\n",__FUNCTION__); } else{ DBG(KERN_INFO " %s gsensor I2C err @@@ REG_STADR_VALUE = %d , REG_STAINT_VALUE = %d \n", __func__, buffer[0], buffer2[0]); return -1; } /* 2. Powerdown reset */ buffer[0] = REG_PD; buffer[1] = VALUE_PD_RST; sensor_tx_data(client, buffer, 2); /* 3. ACTR => Standby mode => Download OTP to parameter reg => Standby mode => Reset data path => Standby mode */ buffer[0] = REG_ACTR; buffer[1] = MODE_Standby; buffer[2] = MODE_ReadOTP; buffer[3] = MODE_Standby; buffer[4] = MODE_ResetDataPath; buffer[5] = MODE_Standby; sensor_tx_data(client, buffer, 6); /* 4. OSCA_EN = 1 ,TSTO = b'000(INT1 = normal, TEST0 = normal) */ buffer[0] = REG_MISC2; buffer[1] = VALUE_MISC2_OSCA_EN; sensor_tx_data(client, buffer, 2); /* 5. AFEN = 1(AFE will powerdown after ADC) */ buffer[0] = REG_AFEM; buffer[1] = VALUE_AFEM_AFEN_Normal; buffer[2] = VALUE_CKSEL_ODR_100_204; buffer[3] = VALUE_INTC; buffer[4] = VALUE_TAPNS_Ave_2; buffer[5] = 0x00; // DLYC, no delay timing buffer[6] = 0x07; // INTD=1 (push-pull), INTA=1 (active high), AUTOT=1 (enable T) sensor_tx_data(client, buffer, 7); /* 6. write TCGYZ & TCGX */ buffer[0] = REG_WDAL; // REG:0x01 buffer[1] = 0x00; // set TC of Y,Z gain value buffer[2] = 0x00; // set TC of X gain value buffer[3] = 0x03; // Temperature coefficient of X,Y,Z gain sensor_tx_data(client, buffer, 4); buffer[0] = REG_ACTR; // REG:0x00 buffer[1] = MODE_Standby; // Standby buffer[2] = MODE_WriteOTPBuf; // WriteOTPBuf buffer[3] = MODE_Standby; // Standby /* 7. Activation mode */ buffer[0] = REG_ACTR; buffer[1] = MODE_Active; sensor_tx_data(client, buffer, 2); printk("\n dmard10 gsensor _reset SUCCESS!!\n"); return 0; } /****************operate according to sensor chip:start************/ static int sensor_active(struct i2c_client *client, int enable, int rate) { struct sensor_private_data *sensor = (struct sensor_private_data *) i2c_get_clientdata(client); int result = 0; int status = 0; gsensor_reset(client); sensor->ops->ctrl_data = sensor_read_reg(client, sensor->ops->ctrl_reg); //register setting according to chip datasheet if(enable) { status = DMARD10_ENABLE; //dmard10 sensor->ops->ctrl_data |= status; } else { status = ~DMARD10_ENABLE; //dmard10 sensor->ops->ctrl_data &= status; } DBG("%s:reg=0x%x,reg_ctrl=0x%x,enable=%d\n",__func__,sensor->ops->ctrl_reg, sensor->ops->ctrl_data, enable); result = sensor_write_reg(client, sensor->ops->ctrl_reg, sensor->ops->ctrl_data); if(result) printk("%s:fail to active sensor\n",__func__); return result; } static int sensor_init(struct i2c_client *client) { struct sensor_private_data *sensor = (struct sensor_private_data *) i2c_get_clientdata(client); int result = 0; result = sensor->ops->active(client,0,0); if(result) { printk("%s:line=%d,error\n",__func__,__LINE__); return result; } sensor->status_cur = SENSOR_OFF; DBG("%s:DMARD10_REG_TILT=0x%x\n",__func__,sensor_read_reg(client, DMARD10_REG_TILT)); result = sensor_write_reg(client, DMARD10_REG_SR, (0x01<<5)| 0x02); //32 Samples/Second Active and Auto-Sleep Mode if(result) { printk("%s:line=%d,error\n",__func__,__LINE__); return result; } if(sensor->pdata->irq_enable) //open interrupt { result = sensor_write_reg(client, DMARD10_REG_INTSU, 1<<4);//enable int,GINT=1 if(result) { printk("%s:line=%d,error\n",__func__,__LINE__); return result; } } sensor->ops->ctrl_data = 1<<6; //Interrupt output INT is push-pull result = sensor_write_reg(client, sensor->ops->ctrl_reg, sensor->ops->ctrl_data); if(result) { printk("%s:line=%d,error\n",__func__,__LINE__); return result; } memset(&axis_average, 0, sizeof(struct sensor_axis_average)); return result; } static int sensor_convert_data(struct i2c_client *client, char high_byte, char low_byte) { s64 result; result = ((int)high_byte << 8) | ((int)low_byte); return result * 128; } static int gsensor_report_value(struct i2c_client *client, struct sensor_axis *axis) { struct sensor_private_data *sensor = (struct sensor_private_data *) i2c_get_clientdata(client); if (sensor->status_cur == SENSOR_ON) { /* Report acceleration sensor information */ input_report_abs(sensor->input_dev, ABS_X, axis->x); input_report_abs(sensor->input_dev, ABS_Y, axis->y); input_report_abs(sensor->input_dev, ABS_Z, axis->z); input_sync(sensor->input_dev); } return 0; } #define DMARD10_COUNT_AVERAGE 2 #define GSENSOR_MIN 2 static int sensor_report_value(struct i2c_client *client) { struct sensor_private_data *sensor = (struct sensor_private_data *) i2c_get_clientdata(client); struct sensor_platform_data *pdata = sensor->pdata; int ret = 0; int x,y,z; struct sensor_axis axis; char buffer[8] = {0}; char value = 0; if(sensor->ops->read_len < 3) //sensor->ops->read_len = 3 { printk("%s:lenth is error,len=%d\n",__func__,sensor->ops->read_len); return -1; } memset(buffer, 0, 8); /* Data bytes from hardware xL, xH, yL, yH, zL, zH */ do { *buffer = sensor->ops->read_reg; ret = sensor_rx_data(client, buffer, sensor->ops->read_len); if (ret < 0) return ret; } while (0); //this gsensor need 6 bytes buffer x = sensor_convert_data(sensor->client, buffer[3], buffer[2]); //buffer[1]:high bit y = sensor_convert_data(sensor->client, buffer[5], buffer[4]); z = sensor_convert_data(sensor->client, buffer[7], buffer[6]); axis.x = (pdata->orientation[0])*x + (pdata->orientation[1])*y + (pdata->orientation[2])*z; axis.y = (pdata->orientation[3])*x + (pdata->orientation[4])*y + (pdata->orientation[5])*z; axis.z = (pdata->orientation[6])*x + (pdata->orientation[7])*y + (pdata->orientation[8])*z; gsensor_report_value(client, &axis); mutex_lock(&sensor->data_mutex); sensor->axis = axis; mutex_unlock(&sensor->data_mutex); if((sensor->pdata->irq_enable)&& (sensor->ops->int_status_reg >= 0)) //read sensor intterupt status register { value = sensor_read_reg(client, sensor->ops->int_status_reg); DBG("%s:sensor int status :0x%x\n",__func__,value); } return ret; } static struct sensor_operate gsensor_dmard10_ops = { .name = "gs_dmard10", .type = SENSOR_TYPE_ACCEL, .id_i2c = ACCEL_ID_DMARD10, .read_reg = DMARD10_REG_X_OUT, .read_len = 8, .id_reg = SENSOR_UNKNOW_DATA, .id_data = SENSOR_UNKNOW_DATA, .precision = DMARD10_PRECISION, .ctrl_reg = DMARD10_REG_MODE, .int_status_reg = SENSOR_UNKNOW_DATA, .range = {-65536, 65536}, .trig = IRQF_TRIGGER_LOW | IRQF_ONESHOT, .active = sensor_active, .init = sensor_init, .report = sensor_report_value, }; /****************operate according to sensor chip:end************/ static int gsensor_dmard10_probe(struct i2c_client *client, const struct i2c_device_id *devid) { return sensor_register_device(client, NULL, devid, &gsensor_dmard10_ops); } static void gsensor_dmard10_remove(struct i2c_client *client) { sensor_unregister_device(client, NULL, &gsensor_dmard10_ops); } static const struct i2c_device_id gsensor_dmard10_id[] = { {"gs_dmard10", ACCEL_ID_DMARD10}, {} }; static struct i2c_driver gsensor_dmard10_driver = { .probe = gsensor_dmard10_probe, .remove = (void *)gsensor_dmard10_remove, .shutdown = sensor_shutdown, .id_table = gsensor_dmard10_id, .driver = { .name = "gsensor_dmard10", #ifdef CONFIG_PM .pm = &sensor_pm_ops, #endif }, }; module_i2c_driver(gsensor_dmard10_driver); MODULE_AUTHOR("guoyi "); MODULE_DESCRIPTION("dmard10 3-Axis accelerometer driver"); MODULE_LICENSE("GPL");