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- /****************************************************************************
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2020 VeriSilicon Holdings Co., Ltd.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- *****************************************************************************
- *
- * The GPL License (GPL)
- *
- * Copyright (c) 2020 VeriSilicon Holdings Co., Ltd.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program;
- *
- *****************************************************************************
- *
- * Note: This software is released under dual MIT and GPL licenses. A
- * recipient may use this file under the terms of either the MIT license or
- * GPL License. If you wish to use only one license not the other, you can
- * indicate your decision by deleting one of the above license notices in your
- * version of this file.
- *
- *****************************************************************************/
- #include <asm/io.h>
- #include <linux/cdev.h>
- #include <linux/module.h>
- #include <linux/platform_device.h>
- #include <linux/delay.h>
- #include <linux/clk.h>
- #include <linux/io.h>
- #include <linux/mm.h>
- #include <linux/slab.h>
- #include <linux/proc_fs.h>
- #include <linux/debugfs.h>
- #include <linux/miscdevice.h>
- #include <linux/uaccess.h>
- #include <linux/regulator/consumer.h>
- #include <linux/poll.h>
- #include "vvsensor.h"
- #include "sensor_common.h"
- #define VIVCAM_SENSOR_NAME "vivcam"
- #define VIVCAM_SENSOR_MAXCNT 30
- static unsigned int vvcam_sensor_major = 0;
- static unsigned int vvcam_sensor_minor = 0;
- struct class *vvcam_sensor_class;
- static unsigned int devise_register_index = 0;
- static int vvcam_sensor_open(struct inode * inode, struct file * file)
- {
- int ret = 0;
- struct vvcam_sensor_driver_dev *pdriver_dev;
- struct vvcam_sensor_dev * psensor_dev;
- pdriver_dev = container_of(inode->i_cdev, struct vvcam_sensor_driver_dev, cdev);
- file->private_data = pdriver_dev;
- psensor_dev = pdriver_dev->private;
- pr_debug("%s, enter: vvcam%d \n", __func__, psensor_dev->device_idx);
- if (gpio_is_valid(psensor_dev->rst_pin) && !psensor_dev->rst_pin_is_busy) {
- ret = devm_gpio_request(&pdriver_dev->pdev->dev, psensor_dev->rst_pin, "sensor_rst");
- if (ret < 0) {
- pr_err("%s:sensor_rst request failed\n", __func__);
- } else {
- psensor_dev->rst_pin_is_busy++;
- }
- }
- if (gpio_is_valid(psensor_dev->pdn_pin) && !psensor_dev->pdn_pin_is_busy) {
- ret = devm_gpio_request(&pdriver_dev->pdev->dev, psensor_dev->pdn_pin, "sensor_pdn");
- if (ret < 0) {
- pr_err("%s:sensor_pdn request failed\n", __func__);
- } else {
- psensor_dev->pdn_pin_is_busy++;
- }
- }
- pr_debug("%s, exit: vvcam%d \n", __func__, psensor_dev->device_idx);
- return 0;
- }
- static long vvcam_sensor_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
- {
- long ret = 0;
- struct vvcam_sensor_driver_dev *pdriver_dev;
- struct vvcam_sensor_dev * psensor_dev;
- pdriver_dev = file->private_data;
- if (pdriver_dev == NULL)
- {
- pr_err("%s:file private is null point error\n", __func__);
- return -ENOMEM;
- }
- psensor_dev = pdriver_dev->private;
- pr_debug("%s:sensor[%d], cmd %x\n", __func__, psensor_dev->device_idx, cmd);
- mutex_lock(&pdriver_dev->vvmutex);
- ret = sensor_priv_ioctl(psensor_dev, cmd ,(void __user *)arg);
- mutex_unlock(&pdriver_dev->vvmutex);
- return ret;
- }
- static int vvcam_sensor_release(struct inode * inode, struct file * file)
- {
- struct vvcam_sensor_driver_dev *pdriver_dev;
- struct vvcam_sensor_dev * psensor_dev;
- pdriver_dev = container_of(inode->i_cdev, struct vvcam_sensor_driver_dev, cdev);
- if (pdriver_dev == NULL) {
- pr_err("%s:file private is null point error\n", __func__);
- return -ENOMEM;
- }
- psensor_dev = pdriver_dev->private;
- pr_debug("%s, enter: vvcam%d \n", __func__, psensor_dev->device_idx);
- psensor_dev->rst_pin_is_busy--;
- psensor_dev->pdn_pin_is_busy--;
- if (gpio_is_valid(psensor_dev->rst_pin) && psensor_dev->rst_pin_is_busy == 0) {
- gpio_free(psensor_dev->rst_pin);
- }
- if (gpio_is_valid(psensor_dev->pdn_pin) && psensor_dev->pdn_pin_is_busy == 0) {
- gpio_free(psensor_dev->pdn_pin);
- }
- pr_debug("%s, exit: vvcam%d \n", __func__, psensor_dev->device_idx);
- return 0;// sensor_reset(psensor_dev);
- }
- static unsigned vvcam_sensor_poll(struct file *file, poll_table *wait)
- {
- long ret = 0;
- unsigned int mask = 0;
- struct vvcam_sensor_driver_dev *pdriver_dev;
- struct vvcam_sensor_dev * psensor_dev;
- pdriver_dev = file->private_data;
- if (pdriver_dev == NULL)
- {
- pr_err("%s:file private is null point error\n", __func__);
- return -ENOMEM;
- }
- psensor_dev = pdriver_dev->private;
- poll_wait(file, &psensor_dev->err_wait, wait);
- if (psensor_dev->err_mask) {
- mask |= POLLIN | POLLRDNORM;
- psensor_dev->err_mask = 0;
- }
- return mask;
- }
- struct file_operations vvcam_sensor_fops = {
- .owner = THIS_MODULE,
- .open = vvcam_sensor_open,
- .release = vvcam_sensor_release,
- .unlocked_ioctl = vvcam_sensor_ioctl,
- .poll = vvcam_sensor_poll,
- };
- static int vvcam_sensor_of_parse(struct platform_device *pdev)
- {
- int ret = 0, regulator_num = 0, voltage_set_num = 0;
- struct device_node *np = pdev->dev.of_node;
- struct vvcam_sensor_driver_dev *pdriver_dev = platform_get_drvdata(pdev);
- struct vvcam_sensor_dev * psensor_dev = pdriver_dev->private;
- ret = of_property_read_string(np, "sensor_name", &psensor_dev->sensor_name);
- if (ret < 0) {
- pr_err("%s:property sensor_name not defined for %s\n", __func__, pdev->name);
- return ret;
- }
- psensor_dev->dev = &pdev->dev;
- psensor_dev->regulators.num = of_property_count_strings(np, "sensor_regulators");
- if (psensor_dev->regulators.num <= 0) {
- pr_err("%s:property sensor_regulators not defined for %s\n", __func__, pdev->name);
- } else {
- pr_info("%s num_of_regulators %d\n", __func__, psensor_dev->regulators.num);
- ret = of_property_read_string_array(np, "sensor_regulators",
- psensor_dev->regulators.name, psensor_dev->regulators.num);
- if (ret != psensor_dev->regulators.num) {
- pr_err("%s:fail to read property sensor_regulators\n", __func__);
- return -1;
- };
- voltage_set_num = of_property_count_u32_elems(np, "sensor_regulator_voltage_uV");
- if(voltage_set_num == psensor_dev->regulators.num){
- ret = of_property_read_u32_array(np, "sensor_regulator_voltage_uV",
- psensor_dev->regulators.voltage, psensor_dev->regulators.num);
- if (ret != 0) {
- pr_err("%s:fail to read property sensor_regulator_voltage_uV\n", __func__);
- return -1;
- }
- }
- ret = of_property_read_u32_array(np, "sensor_regulator_timing_us",
- psensor_dev->regulators.delay_us, psensor_dev->regulators.num);
- if (ret != 0) {
- pr_err("%s:fail to read property sensor_regulator_timing_us\n", __func__);
- return ret;
- }
- regulator_num = psensor_dev->regulators.num;
- while (regulator_num) {
- pr_info("%s regulator %s delay %d\n", psensor_dev->sensor_name, psensor_dev->regulators.name[regulator_num - 1],
- psensor_dev->regulators.delay_us[regulator_num - 1]);
- psensor_dev->regulators.supply[regulator_num - 1] = devm_regulator_get(&pdev->dev,
- psensor_dev->regulators.name[regulator_num - 1]);
- if (IS_ERR(psensor_dev->regulators.supply[regulator_num - 1])) {
- pr_err("%s:fail to devm_regulator_get %s\n", __func__, psensor_dev->regulators.name[regulator_num - 1]);
- return -1;
- }
- regulator_num--;
- }
- }
- psensor_dev->pdn_pin = of_get_named_gpio(np, "sensor_pdn", 0);
- if (psensor_dev->pdn_pin < 0) {
- pr_err("sensor_pdn not defined for %s\n", psensor_dev->sensor_name);
- }
- ret = of_property_read_u32(np, "sensor_pdn_delay_us",
- &psensor_dev->pdn_delay_us);
- if (ret != 0) {
- pr_err("fail to read property sensor_pdn_delay_us, assume zero\n");
- }
- psensor_dev->rst_pin = of_get_named_gpio(np, "sensor_rst", 0);
- if (psensor_dev->rst_pin < 0) {
- pr_err("sensor_rst not defined for %s\n", psensor_dev->sensor_name);
- }
- ret = of_property_read_u8(np, "i2c_addr",
- &psensor_dev->sensor_sccb_cfg.slave_addr);
- if (ret != 0) {
- pr_err("fail to read property i2c_addr, refer to %s.c\n", psensor_dev->sensor_name);
- }
- ret = of_property_read_u8(np, "i2c_reg_width",
- &psensor_dev->sensor_sccb_cfg.addr_byte);
- if (ret != 0) {
- pr_err("fail to read property i2c_reg_width, refer to %s.c\n", psensor_dev->sensor_name);
- }
- ret = of_property_read_u8(np, "i2c_data_width",
- &psensor_dev->sensor_sccb_cfg.data_byte);
- if (ret != 0) {
- pr_err("fail to read property i2c_data_width, refer to %s.c\n", psensor_dev->sensor_name);
- }
- ret = of_property_read_u8(np, "i2c_bus",
- &psensor_dev->i2c_bus);
- if (ret != 0) {
- pr_err("fail to read property i2c_bus, refer to %s.c\n", psensor_dev->sensor_name);
- psensor_dev->i2c_bus = UNDEFINED_IN_DTS;
- return -1;
- }
- return 0;
- }
- static int vvcam_sensor_probe(struct platform_device *pdev)
- {
- int ret = 0;
- struct vvcam_sensor_driver_dev *pdriver_dev;
- struct vvcam_sensor_dev * psensor_dev;
- struct device_node *np = pdev->dev.of_node;
- pr_debug("enter %s\n", __func__);
- pdev->id = of_alias_get_id(np, "vivcam");
- if (pdev->id >= VIVCAM_SENSOR_MAXCNT)
- {
- pr_err("%s:pdev id is %d error\n", __func__,pdev->id);
- return -EINVAL;
- }
- pdriver_dev = devm_kzalloc(&pdev->dev,sizeof(struct vvcam_sensor_driver_dev), GFP_KERNEL);
- if (pdriver_dev == NULL)
- {
- pr_err("%s:alloc struct vvcam_sensor_driver_dev error\n", __func__);
- return -ENOMEM;
- }
- memset(pdriver_dev,0,sizeof(struct vvcam_sensor_driver_dev ));
- pr_info("%s:sensor[%d]: pdriver_dev =0x%px\n", __func__,pdev->id,pdriver_dev);
- psensor_dev = devm_kzalloc(&pdev->dev,sizeof(struct vvcam_sensor_dev), GFP_KERNEL);
- if (psensor_dev == NULL)
- {
- pr_err("%s:alloc struct vvcam_sensor_dev error\n", __func__);
- return -ENOMEM;
- }
- memset(psensor_dev,0,sizeof(struct vvcam_sensor_dev ));
- pr_info("%s:sensor[%d]: psensor_dev =0x%px\n", __func__,pdev->id,psensor_dev);
- psensor_dev->device_idx = pdev->id;
- init_waitqueue_head(&psensor_dev->err_wait);
- pdriver_dev->private = psensor_dev;
- pdriver_dev->pdev = pdev;
- mutex_init(&pdriver_dev->vvmutex);
- platform_set_drvdata(pdev, pdriver_dev);
- ret = vvcam_sensor_of_parse(pdev);
- if (ret < 0)
- {
- pr_err("%s:vvcam_sensor_of_parse error\n", __func__);
- return ret;
- }
- ret = vvnative_sensor_init(psensor_dev);
- if (ret != 0)
- {
- pr_err("%s:vvnative_sensor_init error\n", __func__);
- return -EIO;
- }
- if (devise_register_index == 0)
- {
- if (vvcam_sensor_major == 0)
- {
- ret = alloc_chrdev_region(&pdriver_dev->devt, 0, VIVCAM_SENSOR_MAXCNT, VIVCAM_SENSOR_NAME);
- if (ret != 0)
- {
- pr_err("%s:alloc_chrdev_region error\n", __func__);
- return ret;
- }
- vvcam_sensor_major = MAJOR(pdriver_dev->devt);
- vvcam_sensor_minor = MINOR(pdriver_dev->devt);
- }
- else
- {
- pdriver_dev->devt = MKDEV(vvcam_sensor_major, vvcam_sensor_minor);
- ret = register_chrdev_region(pdriver_dev->devt, VIVCAM_SENSOR_MAXCNT, VIVCAM_SENSOR_NAME);
- if (ret)
- {
- pr_err("%s:register_chrdev_region error\n", __func__);
- return ret;
- }
- }
- vvcam_sensor_class = class_create(THIS_MODULE, VIVCAM_SENSOR_NAME);
- if (IS_ERR(vvcam_sensor_class))
- {
- pr_err("%s[%d]:class_create error!\n", __func__, __LINE__);
- return -EINVAL;
- }
- }
- pdriver_dev->devt = MKDEV(vvcam_sensor_major, vvcam_sensor_minor + pdev->id);
- cdev_init(&pdriver_dev->cdev, &vvcam_sensor_fops);
- ret = cdev_add(&pdriver_dev->cdev, pdriver_dev->devt, 1);
- if ( ret )
- {
- pr_err("%s[%d]:cdev_add error!\n", __func__, __LINE__);
- return ret;
- }
- pdriver_dev->class = vvcam_sensor_class;
- device_create(pdriver_dev->class, NULL, pdriver_dev->devt,
- pdriver_dev, "%s%d", VIVCAM_SENSOR_NAME, pdev->id);
- extern int sensor_create_capabilities_sysfs(struct platform_device *pdev);
- sensor_create_capabilities_sysfs(pdev);
- devise_register_index++;
- pr_debug("exit %s\n", __func__);
- return ret;
- }
- static int vvcam_sensor_remove(struct platform_device *pdev)
- {
- struct vvcam_sensor_driver_dev *pdriver_dev;
- struct vvcam_sensor_dev * psensor_dev;
- pr_debug("enter %s\n", __func__);
- devise_register_index--;
- pdriver_dev = platform_get_drvdata(pdev);
- if (pdriver_dev == NULL)
- {
- pr_err("%s:file private is null point error\n", __func__);
- return -ENOMEM;
- }
- psensor_dev = pdriver_dev->private;
- vvnative_sensor_deinit(psensor_dev);
- extern int sensor_remove_capabilities_sysfs(struct platform_device *pdev);
- sensor_remove_capabilities_sysfs(pdev);
- cdev_del(&pdriver_dev->cdev);
- device_destroy(pdriver_dev->class, pdriver_dev->devt);
- unregister_chrdev_region(pdriver_dev->devt, VIVCAM_SENSOR_MAXCNT);
- if (devise_register_index == 0)
- {
- class_destroy(pdriver_dev->class);
- }
- devm_kfree(&pdev->dev, pdriver_dev);
- devm_kfree(&pdev->dev, psensor_dev);
- return 0;
- }
- static const struct of_device_id vvcam_sensor_of_match[] = {
- {.compatible = "thead,light-vvcam-sensor"},
- };
- static struct platform_driver vvcam_sensor_driver = {
- .probe = vvcam_sensor_probe,
- .remove = vvcam_sensor_remove,
- .driver = {
- .name = VIVCAM_SENSOR_NAME,
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(vvcam_sensor_of_match),
- }
- };
- static void vvcam_sensor_pdev_release(struct device *dev)
- {
- pr_debug("enter %s\n", __func__);
- }
- #if 0//def WITH_VVCAM
- static struct platform_device vvcam_sensor_pdev = {
- .name = VIVCAM_SENSOR_NAME,
- .id = 0,
- .dev.release = vvcam_sensor_pdev_release,
- };
- #endif
- #if 0//def WITH_VVCAM_DUAL
- static struct platform_device vvcam_sensor_dual_pdev = {
- .name = VIVCAM_SENSOR_NAME,
- .id = 1,
- .dev.release = vvcam_sensor_pdev_release,
- };
- #endif
- static int __init vvcam_sensor_init_module(void)
- {
- int ret = 0;
- pr_debug("enter %s\n", __func__);
- #if 0//def WITH_VVCAM
- ret = platform_device_register(&vvcam_sensor_pdev);
- if (ret)
- {
- pr_err("register platform device failed.\n");
- return ret;
- }
- #endif
- #if 0//def WITH_VVCAM_DUAL
- ret = platform_device_register(&vvcam_sensor_dual_pdev);
- if (ret)
- {
- pr_err("register platform device failed.\n");
- return ret;
- }
- #endif
- ret = platform_driver_register(&vvcam_sensor_driver);
- if (ret)
- {
- pr_err("register platform driver failed.\n");
- return ret;
- }
- return ret;
- }
- static void __exit vvcam_sensor_exit_module(void)
- {
- pr_debug("enter %s\n", __func__);
- platform_driver_unregister(&vvcam_sensor_driver);
- #if 0//def WITH_VVCAM
- platform_device_unregister(&vvcam_sensor_pdev);
- #endif
- #if 0//def WITH_VVCAM_DUAL
- platform_device_unregister(&vvcam_sensor_dual_pdev);
- #endif
- }
- module_init(vvcam_sensor_init_module);
- module_exit(vvcam_sensor_exit_module);
- MODULE_DESCRIPTION("SENSOR");
- MODULE_LICENSE("GPL");
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