From: luowei Date: Tue, 30 Jul 2013 09:47:20 +0000 (+0800) Subject: sensor:add gsensor lsm303d support X-Git-Tag: firefly_0821_release~6823 X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=bfa88626acbe9ddbbd87b72a9493b28c7df00013;p=firefly-linux-kernel-4.4.55.git sensor:add gsensor lsm303d support --- diff --git a/drivers/input/sensors/accel/Kconfig b/drivers/input/sensors/accel/Kconfig index 13c8c33a1681..a58a6852cfd5 100755 --- a/drivers/input/sensors/accel/Kconfig +++ b/drivers/input/sensors/accel/Kconfig @@ -52,6 +52,12 @@ config GS_DMT10 To have support for your sepcific gsensor you will have to select het proper drivers which depend on this option. +config GS_LSM303D + bool "gsensor lsm303d" + help + To have support for your sepcific gsensor you will have to + select het proper drivers which depend on this option. + config GS_BMA023 bool "gsensor bma023" help diff --git a/drivers/input/sensors/accel/Makefile b/drivers/input/sensors/accel/Makefile index 7978e00055aa..bde103c426a8 100755 --- a/drivers/input/sensors/accel/Makefile +++ b/drivers/input/sensors/accel/Makefile @@ -4,4 +4,5 @@ obj-$(CONFIG_GS_MMA8452) += mma8452.o obj-$(CONFIG_GS_LIS3DH) += lis3dh.o obj-$(CONFIG_GS_MMA7660) += mma7660.o obj-$(CONFIG_GS_MXC6225) += mxc622x.o -obj-$(CONFIG_GS_DMT10) += dmard10.o \ No newline at end of file +obj-$(CONFIG_GS_DMT10) += dmard10.o +obj-$(CONFIG_GS_LSM303D) += lsm303d.o \ No newline at end of file diff --git a/drivers/input/sensors/accel/lsm303d.c b/drivers/input/sensors/accel/lsm303d.c new file mode 100755 index 000000000000..b7ed9263cef4 --- /dev/null +++ b/drivers/input/sensors/accel/lsm303d.c @@ -0,0 +1,367 @@ +/* drivers/input/sensors/access/kxtik.c + * + * Copyright (C) 2012-2015 ROCKCHIP. + * Author: Bruins + * + * 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 +#ifdef CONFIG_HAS_EARLYSUSPEND +#include +#endif +#include + + +#define LSM303D_WHO_AM_I (0x0F) + +/* full scale setting - register & mask */ +#define LSM303D_CTRL_REG0 (0x1F) +#define LSM303D_CTRL_REG1 (0x20) +#define LSM303D_CTRL_REG2 (0x21) +#define LSM303D_CTRL_REG3 (0x22) +#define LSM303D_CTRL_REG4 (0x23) +#define LSM303D_CTRL_REG5 (0x24) +#define LSM303D_CTRL_REG6 (0x25) +#define LSM303D_CTRL_REG7 (0x26) +#define LSM303D_STATUS_REG (0x27) +#define LSM303D_OUT_X_L (0x28) +#define LSM303D_OUT_X_H (0x29) +#define LSM303D_OUT_Y_L (0x2a) +#define LSM303D_OUT_Y_H (0x2b) +#define LSM303D_OUT_Z_L (0x2c) +#define LSM303D_OUT_Z_H (0x2d) +#define LSM303D_FIFO_CTRL_REG (0x2E) +#define LSM303D_FIFO_SRC_REG (0X2F) + +#define LSM303D_IG_CFG1 (0x30) +#define LSM303D_IG_SRC1 (0x31) +#define LSM303D_IG_THS1 (0x32) +#define LSM303D_IG_DURATION1 (0x33) + +#define LSM303D_IG_CFG2 (0x34) +#define LSM303D_IG_SRC2 (0x35) +#define LSM303D_IG_THS2 (0x36) +#define LSM303D_IG_DURATION2 (0x37) + + +#define LSM303D_DEVID (0x49) //chip id +#define LSM303D_ACC_DISABLE (0x08) + +#define LSM303D_RANGE 2000000 + +/* LSM303D */ +#define LSM303D_PRECISION 16 +#define LSM303D_BOUNDARY (0x1 << (LSM303D_PRECISION - 1)) +#define LSM303D_GRAVITY_STEP (LSM303D_RANGE / LSM303D_BOUNDARY) + +#define ODR3P25 0x10 /* 3.25Hz output data rate */ +#define ODR6P25 0x20 /* 6.25Hz output data rate */ +#define ODR12P5 0x30 /* 12.5Hz output data rate */ +#define ODR25 0x40 /* 25Hz output data rate */ +#define ODR50 0x50 /* 50Hz output data rate */ +#define ODR100 0x60 /* 100Hz output data rate */ +#define ODR200 0x70 /* 200Hz output data rate */ +#define ODR400 0x80 /* 400Hz output data rate */ +#define ODR800 0x90 /* 800Hz output data rate */ +#define ODR1600 0xA0 /* 1600Hz output data rate */ + + +struct sensor_reg_data { + char reg; + char data; +}; + +/****************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; + + sensor->ops->ctrl_data = sensor_read_reg(client, sensor->ops->ctrl_reg); + + sensor->ops->ctrl_data |= ODR100; //100HZ,if 0 then power down + + //register setting according to chip datasheet + if(!enable) + { + status = LSM303D_ACC_DISABLE; //lis3dh + sensor->ops->ctrl_data |= status; + } + else + { + status = ~LSM303D_ACC_DISABLE; //lis3dh + 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; + int i; + + struct sensor_reg_data reg_data[] = + { + {LSM303D_CTRL_REG0,0x00}, + {LSM303D_CTRL_REG1,0x07}, + {LSM303D_CTRL_REG2,0x00}, + {LSM303D_CTRL_REG3,0x00}, + {LSM303D_CTRL_REG4,0x00}, + {LSM303D_CTRL_REG5,0x78}, //High resolution output mode:11, + {LSM303D_CTRL_REG6,0x20}, + {LSM303D_CTRL_REG7,0x00}, + {LSM303D_FIFO_CTRL_REG,0x00}, + {LSM303D_IG_CFG1,0xFF}, //6 direction position recognition + {LSM303D_IG_THS1,0x7F}, //Interrupt 1 threshold + {LSM303D_IG_DURATION1,0x7F}, //Duration value 0x00->ox7f + + /* + {LSM303D_CTRL_REG7,0x00}, + {LSM303D_CTRL_REG4,0x08}, //High resolution output mode: 1, Normal mode + {LSM303D_CTRL_REG6,0x40}, + + {LSM303D_FIFO_CTRL_REG,0x00}, // + {LSM303D_IG_CFG1,0xFF}, //6 direction position recognition + {LSM303D_IG_THS1,0x7F}, //Interrupt 1 threshold + {LSM303D_IG_DURATION1,0x7F}, //Duration value 0x00->ox7f + */ + }; + + result = sensor->ops->active(client,0,0); + if(result) + { + printk("%s:line=%d,error\n",__func__,__LINE__); + return result; + } + + sensor->status_cur = SENSOR_OFF; + + for(i=0;i<(sizeof(reg_data)/sizeof(struct sensor_reg_data));i++) + { + result = sensor_write_reg(client, reg_data[i].reg, reg_data[i].data); + if(result) + { + printk("%s:line=%d,i=%d,error\n",__func__,__LINE__,i); + return result; + } + } + + + if(sensor->pdata->irq_enable) + { + + result = sensor_write_reg(client, LSM303D_CTRL_REG3, 0x20); + if(result) + { + printk("%s:line=%d,error\n",__func__,__LINE__); + return result; + } + + i = sensor_read_reg(client,LSM303D_CTRL_REG5); + + result = sensor_write_reg(client, LSM303D_CTRL_REG5, (i|0x01)); + if(result) + { + printk("%s:line=%d,error\n",__func__,__LINE__); + return result; + } + + } + + return result; +} + + +static int sensor_convert_data(struct i2c_client *client, char high_byte, char low_byte) +{ + s64 result; + struct sensor_private_data *sensor = + (struct sensor_private_data *) i2c_get_clientdata(client); + + switch (sensor->devid) { + case LSM303D_DEVID: + result = ((int)high_byte << 8) | (int)low_byte; + if (result < LSM303D_BOUNDARY) + result = result* LSM303D_GRAVITY_STEP; + else + result = ~( ((~result & (0x7fff>>(16-LSM303D_PRECISION)) ) + 1) + * LSM303D_GRAVITY_STEP) + 1; + break; + + default: + printk(KERN_ERR "%s: devid wasn't set correctly\n",__func__); + return -EFAULT; + } + + return (int)result; +} + +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); + + /* 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); + DBG("Gsensor x==%d y==%d z==%d\n",axis->x,axis->y,axis->z); + + return 0; +} + +#define GSENSOR_MIN 10 +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[6] = {0}; + char value = 0; + + if(sensor->ops->read_len < 6) //sensor->ops->read_len = 6 + { + printk("%s:lenth is error,len=%d\n",__func__,sensor->ops->read_len); + return -1; + } + + memset(buffer, 0, 6); + + value = sensor_read_reg(client, LSM303D_STATUS_REG); + if((value & 0x0f) == 0) + { + printk("%s:line=%d,value=0x%x,data is not ready\n",__func__,__LINE__,value); + return -1; + } + + + /* 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[1], buffer[0]); //buffer[1]:high bit + y = sensor_convert_data(sensor->client, buffer[3], buffer[2]); + z = sensor_convert_data(sensor->client, buffer[5], buffer[4]); + + 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; + + DBG( "%s: axis = %d %d %d \n", __func__, axis.x, axis.y, axis.z); + //printk( "%s: axis = %d %d %d \n", __func__, axis.x, axis.y, axis.z); + + //Report event only while value is changed to save some power + if((abs(sensor->axis.x - axis.x) > GSENSOR_MIN) || (abs(sensor->axis.y - axis.y) > GSENSOR_MIN) || (abs(sensor->axis.z - axis.z) > GSENSOR_MIN)) + { + gsensor_report_value(client, &axis); + + /* »¥³âµØ»º´æÊý¾Ý. */ + 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; +} + +struct sensor_operate gsensor_lsm303d_ops = { + .name = "lsm303d", + .type = SENSOR_TYPE_ACCEL, //sensor type and it should be correct + .id_i2c = ACCEL_ID_LSM303D, //i2c id number + .read_reg = (LSM303D_OUT_X_L | 0x80), //read data + .read_len = 6, //data length + .id_reg = LSM303D_WHO_AM_I, //read device id from this register + .id_data = LSM303D_DEVID, //device id + .precision = LSM303D_PRECISION, //16 bits + .ctrl_reg = LSM303D_CTRL_REG1, //enable or disable + .int_status_reg = LSM303D_IG_SRC1, //intterupt status register + .range = {-LSM303D_RANGE,LSM303D_RANGE}, //range + .trig = (IRQF_TRIGGER_LOW|IRQF_ONESHOT), + .active = sensor_active, + .init = sensor_init, + .report = sensor_report_value, +}; + + +/****************operate according to sensor chip:end************/ + +//function name should not be changed +static struct sensor_operate *gsensor_get_ops(void) +{ + return &gsensor_lsm303d_ops; +} + + +static int __init gsensor_lis3dh_init(void) +{ + struct sensor_operate *ops = gsensor_get_ops(); + int result = 0; + int type = ops->type; + result = sensor_register_slave(type, NULL, NULL, gsensor_get_ops); + return result; +} + +static void __exit gsensor_lis3dh_exit(void) +{ + struct sensor_operate *ops = gsensor_get_ops(); + int type = ops->type; + sensor_unregister_slave(type, NULL, NULL, gsensor_get_ops); +} + + +module_init(gsensor_lis3dh_init); +module_exit(gsensor_lis3dh_exit); + + + + diff --git a/drivers/input/sensors/sensor-dev.c b/drivers/input/sensors/sensor-dev.c index 3c3c6d1418b2..a681199c1c21 100755 --- a/drivers/input/sensors/sensor-dev.c +++ b/drivers/input/sensors/sensor-dev.c @@ -1749,6 +1749,7 @@ static const struct i2c_device_id sensor_id[] = { {"gs_mma7660", ACCEL_ID_MMA7660}, {"gs_mxc6225", ACCEL_ID_MXC6225}, {"gs_dmard10", ACCEL_ID_DMARD10}, + {"gs_lsm303d", ACCEL_ID_LSM303D}, /*compass*/ {"compass", COMPASS_ID_ALL}, {"ak8975", COMPASS_ID_AK8975}, diff --git a/include/linux/sensor-dev.h b/include/linux/sensor-dev.h index 3fa49dff8fe1..863bd538b10e 100755 --- a/include/linux/sensor-dev.h +++ b/include/linux/sensor-dev.h @@ -57,6 +57,7 @@ enum sensor_id { ACCEL_ID_MPU6050, ACCEL_ID_MXC6225, ACCEL_ID_DMARD10, + ACCEL_ID_LSM303D, COMPASS_ID_ALL, COMPASS_ID_AK8975,