290 lines
7.4 KiB
C
290 lines
7.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#define pr_fmt(fmt) "<GYRO_FAC> " fmt
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#include "inc/gyro_factory.h"
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struct gyro_factory_private {
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uint32_t gain;
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uint32_t sensitivity;
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struct gyro_factory_fops *fops;
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};
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static struct gyro_factory_private gyro_factory;
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static int gyro_factory_open(struct inode *inode, struct file *file)
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{
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return nonseekable_open(inode, file);
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}
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static int gyro_factory_release(struct inode *inode, struct file *file)
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{
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return 0;
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}
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static long gyro_factory_unlocked_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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void __user *ptr = (void __user *)arg;
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long err = 0;
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uint32_t flag = 0;
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int smtRes = 0, status = 0;
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int32_t data_buf[3] = {0};
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char strbuf[64] = {0};
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struct SENSOR_DATA sensor_data = {0};
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int len;
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if (_IOC_DIR(cmd) & _IOC_READ)
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err = !access_ok(VERIFY_WRITE, (void __user *)arg,
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_IOC_SIZE(cmd));
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else if (_IOC_DIR(cmd) & _IOC_WRITE)
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err = !access_ok(VERIFY_READ, (void __user *)arg,
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_IOC_SIZE(cmd));
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if (err) {
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pr_err("access error: %08X, (%2d, %2d)\n", cmd,
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_IOC_DIR(cmd), _IOC_SIZE(cmd));
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return -EFAULT;
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}
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switch (cmd) {
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case GYROSCOPE_IOCTL_INIT:
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if (copy_from_user(&flag, ptr, sizeof(flag)))
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return -EFAULT;
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if (gyro_factory.fops != NULL &&
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gyro_factory.fops->enable_sensor != NULL) {
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err = gyro_factory.fops->enable_sensor(flag,
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5); /* 5ms */
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if (err < 0) {
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pr_err("GYROSCOPE_IOCTL_INIT fail!\n");
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return -EINVAL;
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}
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pr_debug(
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"GYROSCOPE_IOCTL_INIT, enable: %d, sample_period:%dms\n",
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flag, 5);
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} else {
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pr_err("GYROSCOPE_IOCTL_INIT NULL\n");
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return -EINVAL;
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}
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return 0;
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case GYROSCOPE_IOCTL_SMT_DATA:
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smtRes = 1;
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if (copy_to_user(ptr, &smtRes, sizeof(smtRes)))
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return -EFAULT;
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return 0;
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case GYROSCOPE_IOCTL_READ_SENSORDATA:
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if (gyro_factory.fops != NULL &&
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gyro_factory.fops->get_data != NULL) {
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err = gyro_factory.fops->get_data(data_buf, &status);
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if (err < 0) {
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pr_err(
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"GYROSCOPE_IOCTL_READ_SENSORDATA read data fail!\n");
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return -EINVAL;
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}
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len = sprintf(strbuf, "%x %x %x", data_buf[0],
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data_buf[1], data_buf[2]);
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if (len <= 0)
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return -EINVAL;
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pr_debug(
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"GYROSCOPE_IOCTL_READ_SENSORDATA read strbuf : (%s)!\n",
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strbuf);
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if (copy_to_user(ptr, strbuf, strlen(strbuf) + 1))
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return -EFAULT;
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} else {
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pr_err("GYROSCOPE_IOCTL_READ_SENSORDATA NULL\n");
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return -EINVAL;
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}
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return 0;
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case GYROSCOPE_IOCTL_READ_SENSORDATA_RAW:
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if (gyro_factory.fops != NULL &&
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gyro_factory.fops->get_raw_data != NULL) {
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err = gyro_factory.fops->get_raw_data(data_buf);
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if (err < 0) {
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pr_err(
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"GSENSOR_IOCTL_READ_RAW_DATA read data fail!\n");
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return -EINVAL;
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}
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len = sprintf(strbuf, "%x %x %x", data_buf[0],
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data_buf[1], data_buf[2]);
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if (len <= 0)
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return -EINVAL;
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pr_debug(
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"GYROSCOPE_IOCTL_READ_SENSORDATA_RAW read strbuf : (%s)!\n",
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strbuf);
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if (copy_to_user(ptr, strbuf, strlen(strbuf) + 1))
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return -EFAULT;
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} else {
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pr_err(
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"GYROSCOPE_IOCTL_READ_SENSORDATA_RAW NULL\n");
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return -EINVAL;
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}
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return 0;
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case GYROSCOPE_IOCTL_SET_CALI:
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if (copy_from_user(&sensor_data, ptr, sizeof(sensor_data)))
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return -EFAULT;
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data_buf[0] = sensor_data.x;
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data_buf[1] = sensor_data.y;
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data_buf[2] = sensor_data.z;
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pr_debug("GYROSCOPE_IOCTL_SET_CALI: (%d, %d, %d)!\n",
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data_buf[0], data_buf[1], data_buf[2]);
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if (gyro_factory.fops != NULL &&
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gyro_factory.fops->set_cali != NULL) {
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err = gyro_factory.fops->set_cali(data_buf);
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if (err < 0) {
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pr_err("GYROSCOPE_IOCTL_SET_CALI FAIL!\n");
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return -EINVAL;
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}
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} else {
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pr_err("GYROSCOPE_IOCTL_SET_CALI NULL\n");
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return -EINVAL;
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}
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return 0;
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case GYROSCOPE_IOCTL_CLR_CALI:
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if (gyro_factory.fops != NULL &&
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gyro_factory.fops->clear_cali != NULL) {
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err = gyro_factory.fops->clear_cali();
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if (err < 0) {
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pr_err("GYROSCOPE_IOCTL_CLR_CALI FAIL!\n");
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return -EINVAL;
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}
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} else {
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pr_err("GYROSCOPE_IOCTL_CLR_CALI NULL\n");
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return -EINVAL;
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}
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return 0;
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case GYROSCOPE_IOCTL_GET_CALI:
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if (gyro_factory.fops != NULL &&
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gyro_factory.fops->get_cali != NULL) {
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err = gyro_factory.fops->get_cali(data_buf);
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if (err < 0) {
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pr_err("GYROSCOPE_IOCTL_GET_CALI FAIL!\n");
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return -EINVAL;
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}
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} else {
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pr_err("GYROSCOPE_IOCTL_GET_CALI NULL\n");
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return -EINVAL;
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}
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pr_debug("GYROSCOPE_IOCTL_GET_CALI: (%d, %d, %d)!\n",
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data_buf[0], data_buf[1], data_buf[2]);
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sensor_data.x = data_buf[0];
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sensor_data.y = data_buf[1];
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sensor_data.z = data_buf[2];
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if (copy_to_user(ptr, &sensor_data, sizeof(sensor_data)))
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return -EFAULT;
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return 0;
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case GYROSCOPE_IOCTL_ENABLE_CALI:
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if (gyro_factory.fops != NULL &&
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gyro_factory.fops->enable_calibration != NULL) {
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err = gyro_factory.fops->enable_calibration();
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if (err < 0) {
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pr_err(
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"GYROSCOPE_IOCTL_ENABLE_CALI FAIL!\n");
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return -EINVAL;
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}
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} else {
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pr_err("GYROSCOPE_IOCTL_ENABLE_CALI NULL\n");
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return -EINVAL;
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}
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return 0;
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case GYROSCOPE_IOCTL_SELF_TEST:
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if (gyro_factory.fops != NULL &&
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gyro_factory.fops->do_self_test != NULL) {
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err = gyro_factory.fops->do_self_test();
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if (err < 0) {
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pr_err(
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"GYROSCOPE_IOCTL_SELF_TEST FAIL!\n");
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return -EINVAL;
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}
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} else {
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pr_err("GYROSCOPE_IOCTL_SELF_TEST NULL\n");
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return -EINVAL;
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}
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return 0;
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default:
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pr_err("unknown IOCTL: 0x%08x\n", cmd);
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return -ENOIOCTLCMD;
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}
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return 0;
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}
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#if IS_ENABLED(CONFIG_COMPAT)
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static long compat_gyro_factory_unlocked_ioctl(struct file *filp,
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unsigned int cmd,
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unsigned long arg)
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{
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if (!filp->f_op || !filp->f_op->unlocked_ioctl) {
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pr_err(
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"compat_ion_ioctl file has no f_op or no f_op->unlocked_ioctl.\n");
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return -ENOTTY;
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}
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switch (cmd) {
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case COMPAT_GYROSCOPE_IOCTL_INIT:
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case COMPAT_GYROSCOPE_IOCTL_SMT_DATA:
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case COMPAT_GYROSCOPE_IOCTL_READ_SENSORDATA_RAW:
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case COMPAT_GYROSCOPE_IOCTL_READ_SENSORDATA:
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/* NVRAM will use below ioctl */
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case COMPAT_GYROSCOPE_IOCTL_SET_CALI:
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case COMPAT_GYROSCOPE_IOCTL_CLR_CALI:
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case COMPAT_GYROSCOPE_IOCTL_GET_CALI:
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case COMPAT_GYROSCOPE_IOCTL_ENABLE_CALI:
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case COMPAT_GYROSCOPE_IOCTL_SELF_TEST:
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pr_debug(
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"compat_ion_ioctl : GYROSCOPE_IOCTL_XXX command is 0x%x\n",
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cmd);
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return filp->f_op->unlocked_ioctl(
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filp, cmd, (unsigned long)compat_ptr(arg));
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default:
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pr_err("compat_ion_ioctl : No such command!! 0x%x\n", cmd);
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return -ENOIOCTLCMD;
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}
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}
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#endif
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/*----------------------------------------------------------------------------*/
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static const struct file_operations gyro_factory_fops = {
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.open = gyro_factory_open,
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.release = gyro_factory_release,
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.unlocked_ioctl = gyro_factory_unlocked_ioctl,
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#if IS_ENABLED(CONFIG_COMPAT)
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.compat_ioctl = compat_gyro_factory_unlocked_ioctl,
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#endif
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};
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static struct miscdevice gyro_factory_device = {
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.minor = MISC_DYNAMIC_MINOR,
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.name = "gyroscope",
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.fops = &gyro_factory_fops,
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};
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int gyro_factory_device_register(struct gyro_factory_public *dev)
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{
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int err = 0;
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if (!dev || !dev->fops)
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return -1;
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gyro_factory.gain = dev->gain;
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gyro_factory.sensitivity = dev->sensitivity;
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gyro_factory.fops = dev->fops;
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err = misc_register(&gyro_factory_device);
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if (err) {
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pr_err("gyro_factory_device register failed\n");
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err = -1;
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}
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return err;
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}
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int gyro_factory_device_deregister(struct gyro_factory_public *dev)
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{
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gyro_factory.fops = NULL;
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misc_deregister(&gyro_factory_device);
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return 0;
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}
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