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sensor:add gsensor lsm303d support
This commit is contained in:
luowei
parent
53afc1d952
commit
bfa88626ac
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@ -52,6 +52,12 @@ config GS_DMT10
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To have support for your sepcific gsensor you will have to
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select het proper drivers which depend on this option.
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config GS_LSM303D
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bool "gsensor lsm303d"
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help
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To have support for your sepcific gsensor you will have to
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select het proper drivers which depend on this option.
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config GS_BMA023
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bool "gsensor bma023"
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help
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@ -4,4 +4,5 @@ obj-$(CONFIG_GS_MMA8452) += mma8452.o
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obj-$(CONFIG_GS_LIS3DH) += lis3dh.o
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obj-$(CONFIG_GS_MMA7660) += mma7660.o
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obj-$(CONFIG_GS_MXC6225) += mxc622x.o
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obj-$(CONFIG_GS_DMT10) += dmard10.o
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obj-$(CONFIG_GS_DMT10) += dmard10.o
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obj-$(CONFIG_GS_LSM303D) += lsm303d.o
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367
drivers/input/sensors/accel/lsm303d.c
Executable file
367
drivers/input/sensors/accel/lsm303d.c
Executable file
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@ -0,0 +1,367 @@
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/* drivers/input/sensors/access/kxtik.c
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*
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* Copyright (C) 2012-2015 ROCKCHIP.
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* Author: Bruins <xwj@rock-chips.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/interrupt.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/irq.h>
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#include <linux/miscdevice.h>
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#include <linux/gpio.h>
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#include <asm/uaccess.h>
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#include <asm/atomic.h>
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#include <linux/delay.h>
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#include <linux/input.h>
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#include <linux/workqueue.h>
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#include <linux/freezer.h>
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#include <mach/gpio.h>
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#include <mach/board.h>
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#ifdef CONFIG_HAS_EARLYSUSPEND
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#include <linux/earlysuspend.h>
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#endif
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#include <linux/sensor-dev.h>
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#define LSM303D_WHO_AM_I (0x0F)
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/* full scale setting - register & mask */
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#define LSM303D_CTRL_REG0 (0x1F)
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#define LSM303D_CTRL_REG1 (0x20)
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#define LSM303D_CTRL_REG2 (0x21)
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#define LSM303D_CTRL_REG3 (0x22)
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#define LSM303D_CTRL_REG4 (0x23)
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#define LSM303D_CTRL_REG5 (0x24)
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#define LSM303D_CTRL_REG6 (0x25)
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#define LSM303D_CTRL_REG7 (0x26)
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#define LSM303D_STATUS_REG (0x27)
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#define LSM303D_OUT_X_L (0x28)
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#define LSM303D_OUT_X_H (0x29)
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#define LSM303D_OUT_Y_L (0x2a)
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#define LSM303D_OUT_Y_H (0x2b)
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#define LSM303D_OUT_Z_L (0x2c)
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#define LSM303D_OUT_Z_H (0x2d)
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#define LSM303D_FIFO_CTRL_REG (0x2E)
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#define LSM303D_FIFO_SRC_REG (0X2F)
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#define LSM303D_IG_CFG1 (0x30)
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#define LSM303D_IG_SRC1 (0x31)
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#define LSM303D_IG_THS1 (0x32)
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#define LSM303D_IG_DURATION1 (0x33)
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#define LSM303D_IG_CFG2 (0x34)
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#define LSM303D_IG_SRC2 (0x35)
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#define LSM303D_IG_THS2 (0x36)
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#define LSM303D_IG_DURATION2 (0x37)
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#define LSM303D_DEVID (0x49) //chip id
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#define LSM303D_ACC_DISABLE (0x08)
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#define LSM303D_RANGE 2000000
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/* LSM303D */
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#define LSM303D_PRECISION 16
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#define LSM303D_BOUNDARY (0x1 << (LSM303D_PRECISION - 1))
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#define LSM303D_GRAVITY_STEP (LSM303D_RANGE / LSM303D_BOUNDARY)
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#define ODR3P25 0x10 /* 3.25Hz output data rate */
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#define ODR6P25 0x20 /* 6.25Hz output data rate */
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#define ODR12P5 0x30 /* 12.5Hz output data rate */
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#define ODR25 0x40 /* 25Hz output data rate */
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#define ODR50 0x50 /* 50Hz output data rate */
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#define ODR100 0x60 /* 100Hz output data rate */
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#define ODR200 0x70 /* 200Hz output data rate */
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#define ODR400 0x80 /* 400Hz output data rate */
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#define ODR800 0x90 /* 800Hz output data rate */
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#define ODR1600 0xA0 /* 1600Hz output data rate */
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struct sensor_reg_data {
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char reg;
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char data;
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};
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/****************operate according to sensor chip:start************/
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static int sensor_active(struct i2c_client *client, int enable, int rate)
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{
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struct sensor_private_data *sensor =
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(struct sensor_private_data *) i2c_get_clientdata(client);
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int result = 0;
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int status = 0;
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sensor->ops->ctrl_data = sensor_read_reg(client, sensor->ops->ctrl_reg);
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sensor->ops->ctrl_data |= ODR100; //100HZ,if 0 then power down
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//register setting according to chip datasheet
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if(!enable)
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{
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status = LSM303D_ACC_DISABLE; //lis3dh
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sensor->ops->ctrl_data |= status;
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}
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else
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{
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status = ~LSM303D_ACC_DISABLE; //lis3dh
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sensor->ops->ctrl_data &= status;
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}
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DBG("%s:reg=0x%x,reg_ctrl=0x%x,enable=%d\n",__func__,sensor->ops->ctrl_reg, sensor->ops->ctrl_data, enable);
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result = sensor_write_reg(client, sensor->ops->ctrl_reg, sensor->ops->ctrl_data);
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if(result)
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printk("%s:fail to active sensor\n",__func__);
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return result;
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}
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static int sensor_init(struct i2c_client *client)
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{
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struct sensor_private_data *sensor =
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(struct sensor_private_data *) i2c_get_clientdata(client);
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int result = 0;
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int i;
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struct sensor_reg_data reg_data[] =
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{
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{LSM303D_CTRL_REG0,0x00},
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{LSM303D_CTRL_REG1,0x07},
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{LSM303D_CTRL_REG2,0x00},
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{LSM303D_CTRL_REG3,0x00},
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{LSM303D_CTRL_REG4,0x00},
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{LSM303D_CTRL_REG5,0x78}, //High resolution output mode:11,
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{LSM303D_CTRL_REG6,0x20},
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{LSM303D_CTRL_REG7,0x00},
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{LSM303D_FIFO_CTRL_REG,0x00},
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{LSM303D_IG_CFG1,0xFF}, //6 direction position recognition
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{LSM303D_IG_THS1,0x7F}, //Interrupt 1 threshold
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{LSM303D_IG_DURATION1,0x7F}, //Duration value 0x00->ox7f
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/*
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{LSM303D_CTRL_REG7,0x00},
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{LSM303D_CTRL_REG4,0x08}, //High resolution output mode: 1, Normal mode
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{LSM303D_CTRL_REG6,0x40},
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{LSM303D_FIFO_CTRL_REG,0x00}, //
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{LSM303D_IG_CFG1,0xFF}, //6 direction position recognition
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{LSM303D_IG_THS1,0x7F}, //Interrupt 1 threshold
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{LSM303D_IG_DURATION1,0x7F}, //Duration value 0x00->ox7f
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*/
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};
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result = sensor->ops->active(client,0,0);
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if(result)
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{
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printk("%s:line=%d,error\n",__func__,__LINE__);
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return result;
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}
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sensor->status_cur = SENSOR_OFF;
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for(i=0;i<(sizeof(reg_data)/sizeof(struct sensor_reg_data));i++)
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{
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result = sensor_write_reg(client, reg_data[i].reg, reg_data[i].data);
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if(result)
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{
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printk("%s:line=%d,i=%d,error\n",__func__,__LINE__,i);
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return result;
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}
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}
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if(sensor->pdata->irq_enable)
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{
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result = sensor_write_reg(client, LSM303D_CTRL_REG3, 0x20);
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if(result)
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{
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printk("%s:line=%d,error\n",__func__,__LINE__);
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return result;
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}
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i = sensor_read_reg(client,LSM303D_CTRL_REG5);
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result = sensor_write_reg(client, LSM303D_CTRL_REG5, (i|0x01));
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if(result)
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{
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printk("%s:line=%d,error\n",__func__,__LINE__);
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return result;
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}
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}
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return result;
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}
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static int sensor_convert_data(struct i2c_client *client, char high_byte, char low_byte)
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{
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s64 result;
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struct sensor_private_data *sensor =
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(struct sensor_private_data *) i2c_get_clientdata(client);
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switch (sensor->devid) {
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case LSM303D_DEVID:
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result = ((int)high_byte << 8) | (int)low_byte;
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if (result < LSM303D_BOUNDARY)
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result = result* LSM303D_GRAVITY_STEP;
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else
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result = ~( ((~result & (0x7fff>>(16-LSM303D_PRECISION)) ) + 1)
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* LSM303D_GRAVITY_STEP) + 1;
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break;
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default:
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printk(KERN_ERR "%s: devid wasn't set correctly\n",__func__);
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return -EFAULT;
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}
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return (int)result;
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}
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static int gsensor_report_value(struct i2c_client *client, struct sensor_axis *axis)
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{
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struct sensor_private_data *sensor =
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(struct sensor_private_data *) i2c_get_clientdata(client);
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/* Report acceleration sensor information */
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input_report_abs(sensor->input_dev, ABS_X, axis->x);
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input_report_abs(sensor->input_dev, ABS_Y, axis->y);
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input_report_abs(sensor->input_dev, ABS_Z, axis->z);
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input_sync(sensor->input_dev);
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DBG("Gsensor x==%d y==%d z==%d\n",axis->x,axis->y,axis->z);
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return 0;
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}
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#define GSENSOR_MIN 10
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static int sensor_report_value(struct i2c_client *client)
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{
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struct sensor_private_data *sensor =
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(struct sensor_private_data *) i2c_get_clientdata(client);
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struct sensor_platform_data *pdata = sensor->pdata;
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int ret = 0;
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int x,y,z;
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struct sensor_axis axis;
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char buffer[6] = {0};
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char value = 0;
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if(sensor->ops->read_len < 6) //sensor->ops->read_len = 6
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{
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printk("%s:lenth is error,len=%d\n",__func__,sensor->ops->read_len);
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return -1;
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}
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memset(buffer, 0, 6);
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value = sensor_read_reg(client, LSM303D_STATUS_REG);
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if((value & 0x0f) == 0)
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{
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printk("%s:line=%d,value=0x%x,data is not ready\n",__func__,__LINE__,value);
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return -1;
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}
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/* Data bytes from hardware xL, xH, yL, yH, zL, zH */
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do {
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*buffer = sensor->ops->read_reg;
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ret = sensor_rx_data(client, buffer, sensor->ops->read_len);
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if (ret < 0)
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return ret;
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} while (0);
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//this gsensor need 6 bytes buffer
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x = sensor_convert_data(sensor->client, buffer[1], buffer[0]); //buffer[1]:high bit
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y = sensor_convert_data(sensor->client, buffer[3], buffer[2]);
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z = sensor_convert_data(sensor->client, buffer[5], buffer[4]);
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axis.x = (pdata->orientation[0])*x + (pdata->orientation[1])*y + (pdata->orientation[2])*z;
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axis.y = (pdata->orientation[3])*x + (pdata->orientation[4])*y + (pdata->orientation[5])*z;
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axis.z = (pdata->orientation[6])*x + (pdata->orientation[7])*y + (pdata->orientation[8])*z;
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DBG( "%s: axis = %d %d %d \n", __func__, axis.x, axis.y, axis.z);
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//printk( "%s: axis = %d %d %d \n", __func__, axis.x, axis.y, axis.z);
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//Report event only while value is changed to save some power
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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))
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{
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gsensor_report_value(client, &axis);
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/* »¥³âµØ»º´æÊý¾Ý. */
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mutex_lock(&(sensor->data_mutex) );
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sensor->axis = axis;
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mutex_unlock(&(sensor->data_mutex) );
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}
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if((sensor->pdata->irq_enable)&& (sensor->ops->int_status_reg >= 0)) //read sensor intterupt status register
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{
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value = sensor_read_reg(client, sensor->ops->int_status_reg);
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DBG("%s:sensor int status :0x%x\n",__func__,value);
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}
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return ret;
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}
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struct sensor_operate gsensor_lsm303d_ops = {
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.name = "lsm303d",
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.type = SENSOR_TYPE_ACCEL, //sensor type and it should be correct
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.id_i2c = ACCEL_ID_LSM303D, //i2c id number
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.read_reg = (LSM303D_OUT_X_L | 0x80), //read data
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.read_len = 6, //data length
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.id_reg = LSM303D_WHO_AM_I, //read device id from this register
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.id_data = LSM303D_DEVID, //device id
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.precision = LSM303D_PRECISION, //16 bits
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.ctrl_reg = LSM303D_CTRL_REG1, //enable or disable
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.int_status_reg = LSM303D_IG_SRC1, //intterupt status register
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.range = {-LSM303D_RANGE,LSM303D_RANGE}, //range
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.trig = (IRQF_TRIGGER_LOW|IRQF_ONESHOT),
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.active = sensor_active,
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.init = sensor_init,
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.report = sensor_report_value,
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};
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/****************operate according to sensor chip:end************/
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//function name should not be changed
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static struct sensor_operate *gsensor_get_ops(void)
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{
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return &gsensor_lsm303d_ops;
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}
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static int __init gsensor_lis3dh_init(void)
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{
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struct sensor_operate *ops = gsensor_get_ops();
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int result = 0;
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int type = ops->type;
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result = sensor_register_slave(type, NULL, NULL, gsensor_get_ops);
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return result;
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}
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static void __exit gsensor_lis3dh_exit(void)
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{
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struct sensor_operate *ops = gsensor_get_ops();
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int type = ops->type;
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sensor_unregister_slave(type, NULL, NULL, gsensor_get_ops);
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}
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module_init(gsensor_lis3dh_init);
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module_exit(gsensor_lis3dh_exit);
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@ -1749,6 +1749,7 @@ static const struct i2c_device_id sensor_id[] = {
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{"gs_mma7660", ACCEL_ID_MMA7660},
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{"gs_mxc6225", ACCEL_ID_MXC6225},
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{"gs_dmard10", ACCEL_ID_DMARD10},
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{"gs_lsm303d", ACCEL_ID_LSM303D},
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/*compass*/
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{"compass", COMPASS_ID_ALL},
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{"ak8975", COMPASS_ID_AK8975},
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@ -57,6 +57,7 @@ enum sensor_id {
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ACCEL_ID_MPU6050,
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ACCEL_ID_MXC6225,
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ACCEL_ID_DMARD10,
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ACCEL_ID_LSM303D,
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COMPASS_ID_ALL,
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COMPASS_ID_AK8975,
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