// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2021 Rockchip Electronics Co. Ltd.
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*
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* Author: Kay Guo <kay.guo@rock-chips.com>
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*/
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#include <linux/atomic.h>
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#include <linux/delay.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/freezer.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/miscdevice.h>
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#include <linux/of_gpio.h>
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#include <linux/sensor-dev.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#include <linux/workqueue.h>
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#include "da215s_core.h"
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/* Linear acceleration register */
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#define DA215S_CONFIG 0X00
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#define DA215S_CHIP_ID 0x01
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#define ACC_X_LSB 0x02
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#define ACC_X_MSB 0x03
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#define ACC_Y_LSB 0x04
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#define ACC_Y_MSB 0x05
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#define ACC_Z_LSB 0x06
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#define ACC_Z_MSB 0x07
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#define MOTION_FLAG 0x09
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#define NEWDATA_FLAG 0x0A
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#define ACTIVE_STATUS 0x0B
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#define DA215S_RANGE 0x0F
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#define ODR_AXIS 0x10
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#define DA215S_MODE_BW 0x11
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#define SWAP_POLARITY 0x12
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#define INT_ACTIVE_SET1 0x16
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#define INT_DATA_SET2 0x17
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#define INT_MAP1 0x19
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#define INT_MAP2 0x1A
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#define INT_CONFIG 0x20
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#define INT_LATCH 0x21
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#define ACTIVE_DUR 0x27
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#define ACTIVE_THS 0x28
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#define DA215S_CHIPID_DATA 0x13
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#define DA215S_CTRL_NORMAL 0x34
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#define DA215S_CTRL_SUSPEND 0x80
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#define INT_ACTIVE_ENABLE 0x87
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#define INT_NEW_DATA_ENABLE 0x10
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#define DA215S_OFFSET_MAX 200
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#define DA215S_OFFSET_CUS 130
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#define DA215S_OFFSET_SEN 1024
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#define GSENSOR_MIN 2
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#define DA215S_PRECISION 14
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#define DA215S_DATA_RANGE (16384*4)
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#define DA215S_BOUNDARY (0x1 << (DA215S_PRECISION - 1))
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#define DA215S_GRAVITY_STEP (DA215S_DATA_RANGE/DA215S_BOUNDARY)
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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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sensor->ops->ctrl_data = sensor_read_reg(client, sensor->ops->ctrl_reg);
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if (enable)
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sensor->ops->ctrl_data &= DA215S_CTRL_NORMAL;
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else
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sensor->ops->ctrl_data |= DA215S_CTRL_SUSPEND;
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result = sensor_write_reg(client, sensor->ops->ctrl_reg,
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sensor->ops->ctrl_data);
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if (result)
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dev_err(&client->dev, "%s:fail to active sensor\n", __func__);
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dev_dbg(&client->dev, "reg = 0x%x, reg_ctrl = 0x%x, enable= %d\n",
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sensor->ops->ctrl_reg, sensor->ops->ctrl_data, enable);
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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 status = 0;
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int result = 0;
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result = sensor->ops->active(client, 0, 0);
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if (result) {
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dev_err(&client->dev,
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"%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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result = sensor_write_reg(client, 0x00, 0x24);
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mdelay(25);
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/*+/-4G,14bit normal mode ODR = 62.5hz*/
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result |= sensor_write_reg(client, DA215S_RANGE, 0x61);
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result |= sensor_write_reg(client, DA215S_MODE_BW, 0x34);
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result |= sensor_write_reg(client, ODR_AXIS, 0x06);
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if (result) {
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dev_err(&client->dev, "%s:fail to config DA215S_accel.\n",
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__func__);
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return result;
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}
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/* Enable or Disable for active Interrupt */
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status = sensor_read_reg(client, INT_ACTIVE_SET1);
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if (sensor->pdata->irq_enable)
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status |= INT_ACTIVE_ENABLE;
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else
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status &= ~INT_ACTIVE_ENABLE;
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result = sensor_write_reg(client, INT_ACTIVE_SET1, status);
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if (result) {
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dev_err(&client->dev,
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"%s:fail to set DA215S_INT_ACTIVE.\n", __func__);
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return result;
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}
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/* Enable or Disable for new data Interrupt */
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status = sensor_read_reg(client, INT_DATA_SET2);
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if (sensor->pdata->irq_enable)
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status |= INT_NEW_DATA_ENABLE;
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else
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status &= ~INT_NEW_DATA_ENABLE;
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result = sensor_write_reg(client, INT_DATA_SET2, status);
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if (result) {
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dev_err(&client->dev,
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"%s:fail to set DA215S_INT_NEW_DATA.\n", __func__);
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return result;
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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,
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unsigned char low_byte4, unsigned char high_byte8)
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{
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s64 result;
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result = ((short)((high_byte8 << 8)|low_byte4)) >> 2;
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return (int)result;
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}
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static int gsensor_report_value(struct i2c_client *client,
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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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if ((abs(sensor->axis.x - axis->x) > GSENSOR_MIN) ||
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(abs(sensor->axis.y - axis->y) > GSENSOR_MIN) ||
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(abs(sensor->axis.z - axis->z) > GSENSOR_MIN)) {
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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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}
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return 0;
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}
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static int sensor_report_value(struct i2c_client *client)
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{
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struct sensor_axis axis;
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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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unsigned char buffer[6] = {0};
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int x = 0, y = 0, z = 0;
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int ret = 0;
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int tmp_x = 0, tmp_y = 0, tmp_z = 0;
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if (sensor->ops->read_len < 6) {
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dev_err(&client->dev, "%s:Read len is error,len= %d\n",
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__func__, sensor->ops->read_len);
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return -EINVAL;
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}
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*buffer = sensor->ops->read_reg;
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sensor_rx_data(client, buffer, sensor->ops->read_len);
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if (ret < 0) {
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dev_err(&client->dev,
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"da215s read data failed, ret = %d\n", ret);
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return ret;
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}
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/* x,y,z axis is the 12-bit acceleration output */
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x = sensor_convert_data(sensor->client, buffer[0], buffer[1]);
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y = sensor_convert_data(sensor->client, buffer[2], buffer[3]);
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z = sensor_convert_data(sensor->client, buffer[4], buffer[5]);
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dev_dbg(&client->dev, "%s:x=%d, y=%d, z=%d\n", __func__, x, y, z);
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da215s_temp_calibrate(&x, &y, &z);
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dev_dbg(&client->dev, "%s:x=%d, y=%d, z=%d\n", __func__, x, y, z);
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tmp_x = x * DA215S_GRAVITY_STEP;
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tmp_y = y * DA215S_GRAVITY_STEP;
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tmp_z = z * DA215S_GRAVITY_STEP;
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dev_dbg(&client->dev, "%s:temp_x=%d, temp_y=%d, temp_z=%d\n",
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__func__, tmp_x, tmp_y, tmp_z);
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axis.x = (pdata->orientation[0]) * tmp_x + (pdata->orientation[1]) * tmp_y +
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(pdata->orientation[2]) * tmp_z;
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axis.y = (pdata->orientation[3]) * tmp_x + (pdata->orientation[4]) * tmp_y +
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(pdata->orientation[5]) * tmp_z;
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axis.z = (pdata->orientation[6]) * tmp_x + (pdata->orientation[7]) * tmp_y +
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(pdata->orientation[8]) * tmp_z;
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dev_dbg(&client->dev, "<map:>axis = %d, %d, %d\n", axis.x, axis.y, axis.z);
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gsensor_report_value(client, &axis);
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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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if (sensor->pdata->irq_enable) {
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ret = sensor_write_reg(client, INT_MAP1, 0);
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if (ret) {
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dev_err(&client->dev,
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"%s:fail to clear DA215S_INT_register.\n",
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__func__);
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return ret;
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}
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ret = sensor_write_reg(client, INT_MAP2, 0);
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if (ret) {
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dev_err(&client->dev,
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"%s:fail to clear DA215S_INT_register.\n",
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__func__);
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return ret;
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}
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}
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return ret;
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}
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/******************************************************************************/
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static int sensor_suspend(struct i2c_client *client)
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{
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int result = 0;
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// MI_FUN;
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// result = mir3da_set_enable(client, false);
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// if (result) {
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// MI_ERR("sensor_suspend disable fail!!\n");
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// return result;
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// }
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return result;
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}
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/******************************************************************************/
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static int sensor_resume(struct i2c_client *client)
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{
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int result = 0;
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// MI_FUN;
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/*
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* result = mir3da_chip_resume(client);
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* if(result) {
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* MI_ERR("sensor_resume chip resume fail!!\n");
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* return result;
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* }
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*/
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// result = mir3da_set_enable(client, true);
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// if (result) {
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// MI_ERR("sensor_resume enable fail!!\n");
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// return result;
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// }
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return result;
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}
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static struct sensor_operate gsensor_da215s_ops = {
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.name = "gs_da215s",
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.type = SENSOR_TYPE_ACCEL,
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.id_i2c = ACCEL_ID_DA215S,
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.read_reg = ACC_X_LSB,
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.read_len = 6,
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.id_reg = DA215S_CHIP_ID,
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.id_data = DA215S_CHIPID_DATA,
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.precision = DA215S_PRECISION,
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.ctrl_reg = DA215S_MODE_BW,
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.int_status_reg = INT_MAP1,
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.range = {-DA215S_DATA_RANGE, DA215S_DATA_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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.suspend = sensor_suspend,
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.resume = sensor_resume,
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};
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static int gsensor_da215s_probe(struct i2c_client *client,
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const struct i2c_device_id *devid)
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{
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return sensor_register_device(client, NULL, devid, &gsensor_da215s_ops);
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}
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static int gsensor_da215s_remove(struct i2c_client *client)
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{
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return sensor_unregister_device(client, NULL, &gsensor_da215s_ops);
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}
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static const struct i2c_device_id gsensor_da215s_id[] = {
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{"gs_da215s", ACCEL_ID_DA215S},
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{}
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};
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static struct i2c_driver gsensor_da215s_driver = {
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.probe = gsensor_da215s_probe,
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.remove = gsensor_da215s_remove,
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.shutdown = sensor_shutdown,
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.id_table = gsensor_da215s_id,
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.driver = {
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.name = "gsensor_da215s",
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#ifdef CONFIG_PM
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.pm = &sensor_pm_ops,
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#endif
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},
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};
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module_i2c_driver(gsensor_da215s_driver);
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MODULE_AUTHOR("Guo Wangqiang <kay.guo@rock-chips.com>");
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MODULE_DESCRIPTION("da215s 3-Axis accelerometer driver");
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MODULE_LICENSE("GPL");
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