Orange Pi5 kernel

 /* drivers/input/sensors/access/kxtik.c
 *
 * Copyright (C) 2012-2015 ROCKCHIP.
 * Author: Bruins <xwj@rock-chips.com>
 *
 * 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 <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/irq.h>
#include <linux/miscdevice.h>
#include <linux/gpio.h>
#include <linux/uaccess.h>
#include <asm/atomic.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/workqueue.h>
#include <linux/freezer.h>
#include <linux/of_gpio.h>
#ifdef CONFIG_HAS_EARLYSUSPEND
#include <linux/earlysuspend.h>
#endif
#include <linux/sensor-dev.h>
 
 
#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			32768
 
/* 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)
{
<------>int 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);
 
<------>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 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;
 
<------>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_lsm303d_ops = {
<------>.name			= "lsm303d",
<------>.type			= SENSOR_TYPE_ACCEL,
<------>.id_i2c			= ACCEL_ID_LSM303D,
<------>.read_reg			= (LSM303D_OUT_X_L | 0x80),
<------>.read_len			= 6,
<------>.id_reg			= LSM303D_WHO_AM_I,
<------>.id_data			= LSM303D_DEVID,
<------>.precision			= LSM303D_PRECISION,
<------>.ctrl_reg			= LSM303D_CTRL_REG1,
<------>.int_status_reg	= LSM303D_IG_SRC1,
<------>.range			= {-LSM303D_RANGE, LSM303D_RANGE},
<------>.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_lsm303d_probe(struct i2c_client *client,
<------><------><------><------>const struct i2c_device_id *devid)
{
<------>return sensor_register_device(client, NULL, devid, &gsensor_lsm303d_ops);
}
 
static int gsensor_lsm303d_remove(struct i2c_client *client)
{
<------>return sensor_unregister_device(client, NULL, &gsensor_lsm303d_ops);
}
 
static const struct i2c_device_id gsensor_lsm303d_id[] = {
<------>{"gs_lsm303d", ACCEL_ID_LSM303D},
<------>{}
};
 
static struct i2c_driver gsensor_lsm303d_driver = {
<------>.probe = gsensor_lsm303d_probe,
<------>.remove = gsensor_lsm303d_remove,
<------>.shutdown = sensor_shutdown,
<------>.id_table = gsensor_lsm303d_id,
<------>.driver = {
<------><------>.name = "gsensor_lsm303d",
<------>#ifdef CONFIG_PM
<------><------>.pm = &sensor_pm_ops,
<------>#endif
<------>},
};
 
module_i2c_driver(gsensor_lsm303d_driver);
 
MODULE_AUTHOR("xwj <xwj@rock-chips.com>");
MODULE_DESCRIPTION("lsm303d 3-Axis accelerometer driver");
MODULE_LICENSE("GPL");

	/* drivers/input/sensors/access/kxtik.c
	*
	* Copyright (C) 2012-2015 ROCKCHIP.
	* Author: Bruins <xwj@rock-chips.com>
	*
	* 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 <linux/interrupt.h>
	#include <linux/i2c.h>
	#include <linux/slab.h>
	#include <linux/irq.h>
	#include <linux/miscdevice.h>
	#include <linux/gpio.h>
	#include <linux/uaccess.h>
	#include <asm/atomic.h>
	#include <linux/delay.h>
	#include <linux/input.h>
	#include <linux/workqueue.h>
	#include <linux/freezer.h>
	#include <linux/of_gpio.h>
	#ifdef CONFIG_HAS_EARLYSUSPEND
	#include <linux/earlysuspend.h>
	#endif
	#include <linux/sensor-dev.h>


	#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 32768

	/* 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)
	{
	<------>int 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);

	<------>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 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;

	<------>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_lsm303d_ops = {
	<------>.name = "lsm303d",
	<------>.type = SENSOR_TYPE_ACCEL,
	<------>.id_i2c = ACCEL_ID_LSM303D,
	<------>.read_reg = (LSM303D_OUT_X_L \| 0x80),
	<------>.read_len = 6,
	<------>.id_reg = LSM303D_WHO_AM_I,
	<------>.id_data = LSM303D_DEVID,
	<------>.precision = LSM303D_PRECISION,
	<------>.ctrl_reg = LSM303D_CTRL_REG1,
	<------>.int_status_reg = LSM303D_IG_SRC1,
	<------>.range = {-LSM303D_RANGE, LSM303D_RANGE},
	<------>.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_lsm303d_probe(struct i2c_client *client,
	<------><------><------><------>const struct i2c_device_id *devid)
	{
	<------>return sensor_register_device(client, NULL, devid, &gsensor_lsm303d_ops);
	}

	static int gsensor_lsm303d_remove(struct i2c_client *client)
	{
	<------>return sensor_unregister_device(client, NULL, &gsensor_lsm303d_ops);
	}

	static const struct i2c_device_id gsensor_lsm303d_id[] = {
	<------>{"gs_lsm303d", ACCEL_ID_LSM303D},
	<------>{}
	};

	static struct i2c_driver gsensor_lsm303d_driver = {
	<------>.probe = gsensor_lsm303d_probe,
	<------>.remove = gsensor_lsm303d_remove,
	<------>.shutdown = sensor_shutdown,
	<------>.id_table = gsensor_lsm303d_id,
	<------>.driver = {
	<------><------>.name = "gsensor_lsm303d",
	<------>#ifdef CONFIG_PM
	<------><------>.pm = &sensor_pm_ops,
	<------>#endif
	<------>},
	};

	module_i2c_driver(gsensor_lsm303d_driver);

	MODULE_AUTHOR("xwj <xwj@rock-chips.com>");
	MODULE_DESCRIPTION("lsm303d 3-Axis accelerometer driver");
	MODULE_LICENSE("GPL");