1 /* drivers/input/sensors/access/akm09911.c
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3 * Copyright (C) 2012-2015 ROCKCHIP.
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4 * Author: luowei <lw@rock-chips.com>
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6 * This software is licensed under the terms of the GNU General Public
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7 * License version 2, as published by the Free Software Foundation, and
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8 * may be copied, distributed, and modified under those terms.
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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16 #include <linux/interrupt.h>
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17 #include <linux/i2c.h>
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18 #include <linux/slab.h>
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19 #include <linux/irq.h>
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20 #include <linux/miscdevice.h>
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21 #include <linux/gpio.h>
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22 #include <asm/uaccess.h>
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23 #include <asm/atomic.h>
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24 #include <linux/delay.h>
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25 #include <linux/input.h>
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26 #include <linux/workqueue.h>
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27 #include <linux/freezer.h>
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28 #include <linux/of_gpio.h>
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29 #ifdef CONFIG_HAS_EARLYSUSPEND
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30 #include <linux/earlysuspend.h>
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32 #include <linux/sensor-dev.h>
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36 #define SENSOR_DATA_SIZE 9
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37 #define YPR_DATA_SIZE 16
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38 #define RWBUF_SIZE 16
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40 #define ACC_DATA_FLAG 0
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41 #define MAG_DATA_FLAG 1
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42 #define ORI_DATA_FLAG 2
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43 #define AKM_NUM_SENSORS 3
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45 #define ACC_DATA_READY (1<<(ACC_DATA_FLAG))
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46 #define MAG_DATA_READY (1<<(MAG_DATA_FLAG))
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47 #define ORI_DATA_READY (1<<(ORI_DATA_FLAG))
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49 /*Constant definitions of the AK09911.*/
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50 #define AK09911_MEASUREMENT_TIME_US 10000
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52 #define AK09911_MODE_SNG_MEASURE 0x01
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53 #define AK09911_MODE_SELF_TEST 0x10
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54 #define AK09911_MODE_FUSE_ACCESS 0x1F
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55 #define AK09911_MODE_POWERDOWN 0x00
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56 #define AK09911_RESET_DATA 0x01
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59 /* Device specific constant values */
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60 #define AK09911_REG_WIA1 0x00
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61 #define AK09911_REG_WIA2 0x01
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62 #define AK09911_REG_INFO1 0x02
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63 #define AK09911_REG_INFO2 0x03
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64 #define AK09911_REG_ST1 0x10
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65 #define AK09911_REG_HXL 0x11
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66 #define AK09911_REG_HXH 0x12
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67 #define AK09911_REG_HYL 0x13
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68 #define AK09911_REG_HYH 0x14
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69 #define AK09911_REG_HZL 0x15
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70 #define AK09911_REG_HZH 0x16
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71 #define AK09911_REG_TMPS 0x17
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72 #define AK09911_REG_ST2 0x18
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73 #define AK09911_REG_CNTL1 0x30
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74 #define AK09911_REG_CNTL2 0x31
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75 #define AK09911_REG_CNTL3 0x32
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78 #define AK09911_FUSE_ASAX 0x60
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79 #define AK09911_FUSE_ASAY 0x61
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80 #define AK09911_FUSE_ASAZ 0x62
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82 #define AK09911_INFO_SIZE 2
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83 #define AK09911_CONF_SIZE 3
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87 #define COMPASS_IOCTL_MAGIC 'c'
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89 /* IOCTLs for AKM library */
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90 #define ECS_IOCTL_WRITE _IOW(COMPASS_IOCTL_MAGIC, 0x01, char*)
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91 #define ECS_IOCTL_READ _IOWR(COMPASS_IOCTL_MAGIC, 0x02, char*)
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92 #define ECS_IOCTL_RESET _IO(COMPASS_IOCTL_MAGIC, 0x03) /* NOT used in AK8975 */
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93 #define ECS_IOCTL_SET_MODE _IOW(COMPASS_IOCTL_MAGIC, 0x04, short)
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94 #define ECS_IOCTL_GETDATA _IOR(COMPASS_IOCTL_MAGIC, 0x05, char[8])
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95 #define ECS_IOCTL_SET_YPR _IOW(COMPASS_IOCTL_MAGIC, 0x06, short[12])
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96 #define ECS_IOCTL_GET_OPEN_STATUS _IOR(COMPASS_IOCTL_MAGIC, 0x07, int)
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97 #define ECS_IOCTL_GET_CLOSE_STATUS _IOR(COMPASS_IOCTL_MAGIC, 0x08, int)
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98 #define ECS_IOCTL_GET_LAYOUT _IOR(COMPASS_IOCTL_MAGIC, 0x09, char)
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99 #define ECS_IOCTL_GET_ACCEL _IOR(COMPASS_IOCTL_MAGIC, 0x0A, short[3])
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100 #define ECS_IOCTL_GET_OUTBIT _IOR(COMPASS_IOCTL_MAGIC, 0x0B, char)
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101 #define ECS_IOCTL_GET_INFO _IOR(COMPASS_IOCTL_MAGIC, 0x0C, short)
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102 #define ECS_IOCTL_GET_CONF _IOR(COMPASS_IOCTL_MAGIC, 0x0D, short)
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103 #define ECS_IOCTL_GET_PLATFORM_DATA _IOR(COMPASS_IOCTL_MAGIC, 0x0E, struct akm_platform_data)
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104 #define ECS_IOCTL_GET_DELAY _IOR(COMPASS_IOCTL_MAGIC, 0x30, short)
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108 #define AK09911_DEVICE_ID 0x05
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109 static struct i2c_client *this_client;
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110 static struct miscdevice compass_dev_device;
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112 static short g_akm_rbuf[12];
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113 static char g_sensor_info[AK09911_INFO_SIZE];
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114 static char g_sensor_conf[AK09911_CONF_SIZE];
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117 /****************operate according to sensor chip:start************/
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119 static int sensor_active(struct i2c_client *client, int enable, int rate)
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121 struct sensor_private_data *sensor =
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122 (struct sensor_private_data *) i2c_get_clientdata(client);
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125 //sensor->ops->ctrl_data = sensor_read_reg(client, sensor->ops->ctrl_reg);
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127 //register setting according to chip datasheet
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130 sensor->ops->ctrl_data = AK09911_MODE_SNG_MEASURE;
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134 sensor->ops->ctrl_data = AK09911_MODE_POWERDOWN;
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137 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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138 result = sensor_write_reg(client, sensor->ops->ctrl_reg, sensor->ops->ctrl_data);
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140 printk("%s:fail to active sensor\n",__func__);
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146 static int sensor_init(struct i2c_client *client)
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148 struct sensor_private_data *sensor =
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149 (struct sensor_private_data *) i2c_get_clientdata(client);
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152 this_client = client;
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154 result = sensor->ops->active(client,0,0);
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157 printk("%s:line=%d,error\n",__func__,__LINE__);
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161 sensor->status_cur = SENSOR_OFF;
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163 result = misc_register(&compass_dev_device);
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165 printk("%s:fail to register misc device %s\n", __func__, compass_dev_device.name);
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169 g_sensor_info[0] = AK09911_REG_WIA1;
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170 result = sensor_rx_data(client, g_sensor_info, AK09911_INFO_SIZE);
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173 printk("%s:line=%d,error\n",__func__,__LINE__);
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178 g_sensor_conf[0] = AK09911_FUSE_ASAX;
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179 result = sensor_rx_data(client, g_sensor_conf, AK09911_CONF_SIZE);
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182 printk("%s:line=%d,error\n",__func__,__LINE__);
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186 DBG("%s:status_cur=%d\n",__func__, sensor->status_cur);
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190 static int sensor_report_value(struct i2c_client *client)
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192 struct sensor_private_data *sensor =
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193 (struct sensor_private_data *) i2c_get_clientdata(client);
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194 char buffer[SENSOR_DATA_SIZE] = {0};
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195 unsigned char *stat;
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196 unsigned char *stat2;
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201 if(sensor->ops->read_len < SENSOR_DATA_SIZE) //sensor->ops->read_len = 8
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203 printk("%s:lenth is error,len=%d\n",__func__,sensor->ops->read_len);
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207 memset(buffer, 0, SENSOR_DATA_SIZE);
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209 /* Data bytes from hardware xL, xH, yL, yH, zL, zH */
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211 *buffer = sensor->ops->read_reg;
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212 ret = sensor_rx_data(client, buffer, sensor->ops->read_len);
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218 stat2 = &buffer[7];
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222 * Measurement has been completed and data is ready to be read.
224 if ((*stat & 0x01) != 0x01) {
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225 DBG(KERN_ERR "%s:ST is not set\n",__func__);
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231 * occurs when data read is started outside of a readable period;
232 * data read would not be correct.
233 * Valid in continuous measurement mode only.
234 * In single measurement mode this error should not occour but we
235 * stil account for it and return an error, since the data would be
237 * DERR bit is self-clearing when ST2 register is read.
241 DBG(KERN_ERR "%s:compass data error\n",__func__);
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247 * the sum of the absolute values of all axis |X|+|Y|+|Z| < 2400uT.
248 * This is likely to happen in presence of an external magnetic
249 * disturbance; it indicates, the sensor data is incorrect and should
251 * An error is returned.
252 * HOFL bit clears when a new measurement starts.
256 DBG(KERN_ERR "%s:compass data overflow\n",__func__);
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260 /* »¥³âµØ»º´æÊý¾Ý. */
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261 mutex_lock(&sensor->data_mutex);
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262 memcpy(sensor->sensor_data, buffer, sensor->ops->read_len);
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263 mutex_unlock(&sensor->data_mutex);
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264 DBG("%s:",__func__);
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265 for(i=0; i<sensor->ops->read_len; i++)
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266 DBG("0x%x,",buffer[i]);
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269 if((sensor->pdata->irq_enable)&& (sensor->ops->int_status_reg >= 0)) //read sensor intterupt status register
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272 value = sensor_read_reg(client, sensor->ops->int_status_reg);
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273 DBG("%s:sensor int status :0x%x\n",__func__,value);
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277 //trigger next measurement
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278 ret = sensor_write_reg(client, sensor->ops->ctrl_reg, sensor->ops->ctrl_data);
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281 printk(KERN_ERR "%s:fail to set ctrl_data:0x%x\n",__func__,sensor->ops->ctrl_data);
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288 static void compass_set_YPR(int *rbuf)
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290 struct sensor_private_data *sensor =
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291 (struct sensor_private_data *) i2c_get_clientdata(this_client);
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293 /* No events are reported */
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295 printk("%s:Don't waste a time.",__func__);
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299 DBG("%s:buf[0]=0x%x\n",__func__, rbuf[0]);
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301 /* Report magnetic sensor information */
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302 if (atomic_read(&sensor->flags.m_flag) && (rbuf[0] & ORI_DATA_READY)) {
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303 input_report_abs(sensor->input_dev, ABS_RX, rbuf[9]);
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304 input_report_abs(sensor->input_dev, ABS_RY, rbuf[10]);
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305 input_report_abs(sensor->input_dev, ABS_RZ, rbuf[11]);
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306 input_report_abs(sensor->input_dev, ABS_RUDDER, rbuf[4]);
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307 DBG("%s:m_flag:x=%d,y=%d,z=%d,RUDDER=%d\n",__func__,rbuf[9], rbuf[10], rbuf[11], rbuf[4]);
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310 /* Report acceleration sensor information */
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311 if (atomic_read(&sensor->flags.a_flag) && (rbuf[0] & ACC_DATA_READY)) {
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312 input_report_abs(sensor->input_dev, ABS_X, rbuf[1]);
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313 input_report_abs(sensor->input_dev, ABS_Y, rbuf[2]);
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314 input_report_abs(sensor->input_dev, ABS_Z, rbuf[3]);
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315 input_report_abs(sensor->input_dev, ABS_WHEEL, rbuf[4]);
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317 DBG("%s:a_flag:x=%d,y=%d,z=%d,WHEEL=%d\n",__func__,rbuf[1], rbuf[2], rbuf[3], rbuf[4]);
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320 /* Report magnetic vector information */
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321 if (atomic_read(&sensor->flags.mv_flag) && (rbuf[0] & MAG_DATA_READY)) {
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322 input_report_abs(sensor->input_dev, ABS_HAT0X, rbuf[5]);
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323 input_report_abs(sensor->input_dev, ABS_HAT0Y, rbuf[6]);
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324 input_report_abs(sensor->input_dev, ABS_BRAKE, rbuf[7]);
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325 input_report_abs(sensor->input_dev, ABS_HAT1X, rbuf[8]);
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327 DBG("%s:mv_flag:x=%d,y=%d,z=%d,status=%d\n",__func__,rbuf[5], rbuf[6], rbuf[7], rbuf[8]);
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330 input_sync(sensor->input_dev);
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332 memcpy(g_akm_rbuf, rbuf, 12); //used for ECS_IOCTL_GET_ACCEL
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337 static int compass_dev_open(struct inode *inode, struct file *file)
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339 struct sensor_private_data* sensor =
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340 (struct sensor_private_data *)i2c_get_clientdata(this_client);
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342 DBG("%s\n",__func__);
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348 static int compass_dev_release(struct inode *inode, struct file *file)
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350 struct sensor_private_data* sensor =
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351 (struct sensor_private_data *)i2c_get_clientdata(this_client);
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353 DBG("%s\n",__func__);
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358 static int compass_akm_set_mode(struct i2c_client *client, char mode)
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360 struct sensor_private_data* sensor = (struct sensor_private_data *)i2c_get_clientdata(this_client);
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363 switch(mode & 0x1f)
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365 case AK09911_MODE_SNG_MEASURE:
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366 case AK09911_MODE_SELF_TEST:
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367 case AK09911_MODE_FUSE_ACCESS:
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368 if(sensor->status_cur == SENSOR_OFF)
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370 if(sensor->pdata->irq_enable)
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372 //DBG("%s:enable irq=%d\n",__func__,client->irq);
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373 //enable_irq(client->irq);
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377 schedule_delayed_work(&sensor->delaywork, msecs_to_jiffies(sensor->pdata->poll_delay_ms));
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380 sensor->status_cur = SENSOR_ON;
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385 case AK09911_MODE_POWERDOWN:
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386 if(sensor->status_cur == SENSOR_ON)
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388 if(sensor->pdata->irq_enable)
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390 //DBG("%s:disable irq=%d\n",__func__,client->irq);
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391 //disable_irq_nosync(client->irq);//disable irq
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394 cancel_delayed_work_sync(&sensor->delaywork);
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396 sensor->status_cur = SENSOR_OFF;
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402 switch(mode & 0x1f)
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404 case AK09911_MODE_SNG_MEASURE:
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405 result = sensor_write_reg(client, sensor->ops->ctrl_reg, AK09911_MODE_SNG_MEASURE);
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407 printk("%s:i2c error,mode=%d\n",__func__,mode);
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409 case AK09911_MODE_SELF_TEST:
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410 result = sensor_write_reg(client, sensor->ops->ctrl_reg, AK09911_MODE_SELF_TEST);
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412 printk("%s:i2c error,mode=%d\n",__func__,mode);
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414 case AK09911_MODE_FUSE_ACCESS:
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415 result = sensor_write_reg(client, sensor->ops->ctrl_reg, AK09911_MODE_FUSE_ACCESS);
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417 printk("%s:i2c error,mode=%d\n",__func__,mode);
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419 case AK09911_MODE_POWERDOWN:
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420 /* Set powerdown mode */
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421 result = sensor_write_reg(client, sensor->ops->ctrl_reg, AK09911_MODE_POWERDOWN);
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423 printk("%s:i2c error,mode=%d\n",__func__,mode);
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427 printk("%s: Unknown mode(%d)", __func__, mode);
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431 DBG("%s:mode=0x%x\n",__func__,mode);
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436 static int compass_akm_reset(struct i2c_client *client)
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438 struct sensor_private_data* sensor = (struct sensor_private_data *)i2c_get_clientdata(this_client);
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441 if(sensor->pdata->reset_pin > 0)
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443 gpio_direction_output(sensor->pdata->reset_pin, GPIO_LOW);
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445 gpio_direction_output(sensor->pdata->reset_pin, GPIO_HIGH);
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449 /* Set measure mode */
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450 result = sensor_write_reg(client, sensor->ops->ctrl_reg, AK09911_MODE_SNG_MEASURE);
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452 printk("%s:fail to Set measure mode\n",__func__);
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463 static int compass_akm_get_openstatus(void)
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465 struct sensor_private_data* sensor = (struct sensor_private_data *)i2c_get_clientdata(this_client);
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466 wait_event_interruptible(sensor->flags.open_wq, (atomic_read(&sensor->flags.open_flag) != 0));
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467 return atomic_read(&sensor->flags.open_flag);
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470 static int compass_akm_get_closestatus(void)
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472 struct sensor_private_data* sensor = (struct sensor_private_data *)i2c_get_clientdata(this_client);
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473 wait_event_interruptible(sensor->flags.open_wq, (atomic_read(&sensor->flags.open_flag) <= 0));
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474 return atomic_read(&sensor->flags.open_flag);
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478 /* ioctl - I/O control */
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479 static long compass_dev_ioctl(struct file *file,
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480 unsigned int cmd, unsigned long arg)
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482 struct sensor_private_data* sensor = (struct sensor_private_data *)i2c_get_clientdata(this_client);
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483 struct i2c_client *client = this_client;
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484 void __user *argp = (void __user *)arg;
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486 struct akm_platform_data compass;
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488 /* NOTE: In this function the size of "char" should be 1-byte. */
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489 char compass_data[SENSOR_DATA_SIZE]; /* for GETDATA */
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490 char rwbuf[RWBUF_SIZE]; /* for READ/WRITE */
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491 char mode; /* for SET_MODE*/
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492 int value[YPR_DATA_SIZE]; /* for SET_YPR */
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493 int status; /* for OPEN/CLOSE_STATUS */
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494 int ret = -1; /* Return value. */
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496 //int8_t sensor_buf[SENSOR_DATA_SIZE]; /* for GETDATA */
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497 //int32_t ypr_buf[YPR_DATA_SIZE]; /* for SET_YPR */
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498 int16_t acc_buf[3]; /* for GET_ACCEL */
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499 int64_t delay[AKM_NUM_SENSORS]; /* for GET_DELAY */
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500 char layout; /* for GET_LAYOUT */
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501 char outbit; /* for GET_OUTBIT */
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504 case ECS_IOCTL_WRITE:
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505 case ECS_IOCTL_READ:
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506 if (argp == NULL) {
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509 if (copy_from_user(&rwbuf, argp, sizeof(rwbuf))) {
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513 case ECS_IOCTL_SET_MODE:
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514 if (argp == NULL) {
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517 if (copy_from_user(&mode, argp, sizeof(mode))) {
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521 case ECS_IOCTL_SET_YPR:
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522 if (argp == NULL) {
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525 if (copy_from_user(&value, argp, sizeof(value))) {
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529 case ECS_IOCTL_GETDATA:
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530 case ECS_IOCTL_GET_OPEN_STATUS:
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531 case ECS_IOCTL_GET_CLOSE_STATUS:
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532 case ECS_IOCTL_GET_DELAY:
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533 case ECS_IOCTL_GET_LAYOUT:
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534 case ECS_IOCTL_GET_OUTBIT:
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535 case ECS_IOCTL_GET_ACCEL:
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536 case ECS_IOCTL_GET_INFO:
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537 case ECS_IOCTL_GET_CONF:
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538 /* Just check buffer pointer */
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539 if (argp == NULL) {
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540 printk("%s:invalid argument\n",__func__);
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549 case ECS_IOCTL_WRITE:
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550 DBG("%s:ECS_IOCTL_WRITE start\n",__func__);
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551 mutex_lock(&sensor->operation_mutex);
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552 if ((rwbuf[0] < 2) || (rwbuf[0] > (RWBUF_SIZE-1))) {
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553 mutex_unlock(&sensor->operation_mutex);
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556 ret = sensor_tx_data(client, &rwbuf[1], rwbuf[0]);
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558 mutex_unlock(&sensor->operation_mutex);
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559 printk("%s:fait to tx data\n",__func__);
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562 mutex_unlock(&sensor->operation_mutex);
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564 case ECS_IOCTL_READ:
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565 DBG("%s:ECS_IOCTL_READ start\n",__func__);
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566 mutex_lock(&sensor->operation_mutex);
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567 if ((rwbuf[0] < 1) || (rwbuf[0] > (RWBUF_SIZE-1))) {
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568 mutex_unlock(&sensor->operation_mutex);
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569 printk("%s:data is error\n",__func__);
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572 ret = sensor_rx_data(client, &rwbuf[1], rwbuf[0]);
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574 mutex_unlock(&sensor->operation_mutex);
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575 printk("%s:fait to rx data\n",__func__);
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578 mutex_unlock(&sensor->operation_mutex);
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580 case ECS_IOCTL_SET_MODE:
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581 DBG("%s:ECS_IOCTL_SET_MODE start\n",__func__);
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582 mutex_lock(&sensor->operation_mutex);
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583 if(sensor->ops->ctrl_data != mode)
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585 ret = compass_akm_set_mode(client, mode);
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587 printk("%s:fait to set mode\n",__func__);
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588 mutex_unlock(&sensor->operation_mutex);
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592 sensor->ops->ctrl_data = mode;
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594 mutex_unlock(&sensor->operation_mutex);
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596 case ECS_IOCTL_GETDATA:
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597 DBG("%s:ECS_IOCTL_GETDATA start\n",__func__);
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598 mutex_lock(&sensor->data_mutex);
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599 memcpy(compass_data, sensor->sensor_data, SENSOR_DATA_SIZE); //get data from buffer
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600 mutex_unlock(&sensor->data_mutex);
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602 case ECS_IOCTL_SET_YPR:
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603 DBG("%s:ECS_IOCTL_SET_YPR start\n",__func__);
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604 mutex_lock(&sensor->data_mutex);
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605 compass_set_YPR(value);
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606 mutex_unlock(&sensor->data_mutex);
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608 case ECS_IOCTL_GET_OPEN_STATUS:
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609 status = compass_akm_get_openstatus();
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610 DBG("%s:openstatus=%d\n",__func__,status);
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612 case ECS_IOCTL_GET_CLOSE_STATUS:
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613 status = compass_akm_get_closestatus();
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614 DBG("%s:closestatus=%d\n",__func__,status);
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616 case ECS_IOCTL_GET_DELAY:
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617 DBG("%s:ECS_IOCTL_GET_DELAY start\n",__func__);
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618 mutex_lock(&sensor->operation_mutex);
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619 delay[0] = sensor->flags.delay;
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620 delay[1] = sensor->flags.delay;
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621 delay[2] = sensor->flags.delay;
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622 mutex_unlock(&sensor->operation_mutex);
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625 case ECS_IOCTL_GET_PLATFORM_DATA:
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626 DBG("%s:ECS_IOCTL_GET_PLATFORM_DATA start\n",__func__);
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627 memcpy(compass.m_layout, sensor->pdata->m_layout, sizeof(sensor->pdata->m_layout));
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628 memcpy(compass.project_name, sensor->pdata->project_name, sizeof(sensor->pdata->project_name));
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629 ret = copy_to_user(argp, &compass, sizeof(compass));
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632 printk("%s:error,ret=%d\n",__FUNCTION__, ret);
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636 case ECS_IOCTL_GET_LAYOUT:
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637 DBG("%s:ECS_IOCTL_GET_LAYOUT start\n",__func__);
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638 if((sensor->pdata->layout >= 1) && (sensor->pdata->layout <=8 ))
639 layout = sensor->pdata->layout;
643 case ECS_IOCTL_GET_OUTBIT:
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644 DBG("%s:ECS_IOCTL_GET_OUTBIT start\n",__func__);
\r
645 outbit = 1; //sensor->pdata->outbit;
\r
647 case ECS_IOCTL_RESET:
\r
648 DBG("%s:ECS_IOCTL_RESET start\n",__func__);
\r
649 ret = compass_akm_reset(client);
\r
653 case ECS_IOCTL_GET_ACCEL:
\r
654 DBG("%s:ECS_IOCTL_GET_ACCEL start,no accel data\n",__func__);
\r
655 mutex_lock(&sensor->operation_mutex);
\r
656 acc_buf[0] = g_akm_rbuf[6];
\r
657 acc_buf[1] = g_akm_rbuf[7];
\r
658 acc_buf[2] = g_akm_rbuf[8];
\r
659 mutex_unlock(&sensor->operation_mutex);
\r
661 case ECS_IOCTL_GET_INFO:
\r
662 ret = copy_to_user(argp, g_sensor_info, sizeof(g_sensor_info));
\r
665 printk("%s:error,ret=%d\n",__FUNCTION__, ret);
\r
669 case ECS_IOCTL_GET_CONF:
\r
670 ret = copy_to_user(argp, g_sensor_conf, sizeof(g_sensor_conf));
\r
673 printk("%s:error,ret=%d\n",__FUNCTION__, ret);
\r
683 case ECS_IOCTL_READ:
\r
684 if (copy_to_user(argp, &rwbuf, rwbuf[0]+1)) {
\r
688 case ECS_IOCTL_GETDATA:
\r
689 if (copy_to_user(argp, &compass_data, sizeof(compass_data))) {
\r
693 case ECS_IOCTL_GET_OPEN_STATUS:
\r
694 case ECS_IOCTL_GET_CLOSE_STATUS:
\r
695 if (copy_to_user(argp, &status, sizeof(status))) {
\r
699 case ECS_IOCTL_GET_DELAY:
\r
700 if (copy_to_user(argp, &delay, sizeof(delay))) {
\r
704 case ECS_IOCTL_GET_LAYOUT:
\r
705 if (copy_to_user(argp, &layout, sizeof(layout))) {
\r
706 printk("%s:error:%d\n",__FUNCTION__,__LINE__);
\r
710 case ECS_IOCTL_GET_OUTBIT:
\r
711 if (copy_to_user(argp, &outbit, sizeof(outbit))) {
\r
712 printk("%s:error:%d\n",__FUNCTION__,__LINE__);
\r
716 case ECS_IOCTL_GET_ACCEL:
\r
717 if (copy_to_user(argp, &acc_buf, sizeof(acc_buf))) {
\r
718 printk("%s:error:%d\n",__FUNCTION__,__LINE__);
\r
729 static struct file_operations compass_dev_fops =
\r
731 .owner = THIS_MODULE,
\r
732 .open = compass_dev_open,
\r
733 .release = compass_dev_release,
\r
734 .unlocked_ioctl = compass_dev_ioctl,
\r
738 static struct miscdevice compass_dev_device =
\r
740 .minor = MISC_DYNAMIC_MINOR,
\r
742 .fops = &compass_dev_fops,
\r
745 struct sensor_operate compass_akm09911_ops = {
\r
746 .name = "akm09911",
\r
747 .type = SENSOR_TYPE_COMPASS, //it is important
\r
748 .id_i2c = COMPASS_ID_AK09911,
\r
749 .read_reg = AK09911_REG_ST1, //read data
\r
750 .read_len = SENSOR_DATA_SIZE, //data length
\r
751 .id_reg = AK09911_REG_WIA2, //read id
\r
752 .id_data = AK09911_DEVICE_ID,
\r
753 .precision = 8, //12 bits
\r
754 .ctrl_reg = AK09911_REG_CNTL2, //enable or disable
\r
755 .int_status_reg = SENSOR_UNKNOW_DATA, //not exist
\r
756 .range = {-0xffff,0xffff},
\r
757 .trig = IRQF_TRIGGER_RISING, //if LEVEL interrupt then IRQF_ONESHOT
\r
758 .active = sensor_active,
\r
759 .init = sensor_init,
\r
760 .report = sensor_report_value,
\r
761 .misc_dev = NULL, //private misc support
\r
764 /****************operate according to sensor chip:end************/
\r
766 //function name should not be changed
\r
767 static struct sensor_operate *compass_get_ops(void)
\r
769 return &compass_akm09911_ops;
\r
773 static int __init compass_akm09911_init(void)
\r
775 struct sensor_operate *ops = compass_get_ops();
\r
777 int type = ops->type;
\r
778 result = sensor_register_slave(type, NULL, NULL, compass_get_ops);
\r
783 static void __exit compass_akm09911_exit(void)
\r
785 struct sensor_operate *ops = compass_get_ops();
\r
786 int type = ops->type;
\r
787 sensor_unregister_slave(type, NULL, NULL, compass_get_ops);
\r
791 module_init(compass_akm09911_init);
\r
792 module_exit(compass_akm09911_exit);
\r