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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 "csi_ioctl.h"
- #include "csi_common.h"
- #define VIVCAM_CSI_NAME "vivcsi"
- #define VIVCAM_CSI_MAXCNT 2
- struct vvcam_csi_driver_dev
- {
- struct cdev cdev;
- dev_t devt;
- struct class *class;
- struct mutex vvmutex;
- void *private;
- };
- static unsigned int vvcam_csi_major = 0;
- static unsigned int vvcam_csi_minor = 0;
- static struct class *vvcam_csi_class;
- static unsigned int devise_register_index = 0;
- static int vvcam_csi_open(struct inode * inode, struct file * file)
- {
- struct vvcam_csi_driver_dev *pdriver_dev;
- pdriver_dev = container_of(inode->i_cdev, struct vvcam_csi_driver_dev, cdev);
- file->private_data = pdriver_dev;
- return 0;
- };
- static long vvcam_csi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
- {
- struct vvcam_csi_driver_dev *pdriver_dev;
- struct vvcam_csi_dev * pcsi_dev;
- long ret;
- pdriver_dev = file->private_data;
- if (pdriver_dev == NULL)
- {
- pr_err("%s:file private is null point error\n", __func__);
- return -ENOMEM;
- }
- pcsi_dev = pdriver_dev->private;
- pr_info("%s:pdriver_dev =0x%px\n", __func__,pdriver_dev);
- pr_info("%s:csi[%d] pcsi_dev =0x%px\n", __func__,pcsi_dev->device_idx,pcsi_dev);
- mutex_lock(&pdriver_dev->vvmutex);
- ret = csi_priv_ioctl(pcsi_dev, cmd, (void __user *)arg);
- mutex_unlock(&pdriver_dev->vvmutex);
- return ret;
- };
- static int vvcam_csi_release(struct inode * inode, struct file * file)
- {
- return 0;
- };
- static struct file_operations vvcam_csi_fops = {
- .owner = THIS_MODULE,
- .open = vvcam_csi_open,
- .release = vvcam_csi_release,
- .unlocked_ioctl = vvcam_csi_ioctl,
- };
- static int vvcam_csi_probe(struct platform_device *pdev)
- {
- int ret = 0;
- struct vvcam_csi_driver_dev *pdriver_dev;
- struct vvcam_csi_dev * pcsi_dev;
- pr_info("enter %s\n", __func__);
- if (pdev->id >= VIVCAM_CSI_MAXCNT)
- {
- pr_err("%s:pdev id is %d error\n", __func__,pdev->id);
- return -EINVAL;
- }
- pdriver_dev = devm_kzalloc(&pdev->dev,sizeof(struct vvcam_csi_driver_dev), GFP_KERNEL);
- if (pdriver_dev == NULL)
- {
- pr_err("%s:alloc struct vvcam_csi_driver_dev error\n", __func__);
- return -ENOMEM;
- }
- memset(pdriver_dev,0,sizeof(struct vvcam_csi_driver_dev ));
- pr_info("%s:csi[%d]: pdriver_dev =0x%px\n", __func__,pdev->id,pdriver_dev);
- pcsi_dev = devm_kzalloc(&pdev->dev,sizeof(struct vvcam_csi_dev), GFP_KERNEL);
- if (pcsi_dev == NULL)
- {
- pr_err("%s:alloc struct vvcam_csi_dev error\n", __func__);
- return -ENOMEM;
- }
- memset(pcsi_dev,0,sizeof(struct vvcam_csi_dev ));
- pr_info("%s:csi[%d]: pcsi_dev =0x%px\n", __func__,pdev->id,pcsi_dev);
- pcsi_dev->device_idx = pdev->id;
- //mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- //pcsi_dev->base = devm_ioremap_resource(&pdev->dev, mem);
- if (pcsi_dev->device_idx == 0)
- {
- pcsi_dev->base = ioremap(VVCSI0_BASE, VVCSI_SIZE);
- }else
- {
- pcsi_dev->base = ioremap(VVCSI1_BASE, VVCSI_SIZE);
- }
- if (IS_ERR(pcsi_dev->base))
- return PTR_ERR(pcsi_dev->base);
- pdriver_dev->private = pcsi_dev;
- mutex_init(&pdriver_dev->vvmutex);
- platform_set_drvdata(pdev, pdriver_dev);
- ret = vvnative_csi_module_init(pcsi_dev);
- if (ret != 0)
- {
- pr_err("%s:vvnative_csi_module_init error\n", __func__);
- return -ENOMEM;
- }
- if (devise_register_index == 0)
- {
- if (vvcam_csi_major == 0)
- {
- ret = alloc_chrdev_region(&pdriver_dev->devt, 0, VIVCAM_CSI_MAXCNT, VIVCAM_CSI_NAME);
- if (ret != 0)
- {
- pr_err("%s:alloc_chrdev_region error\n", __func__);
- return ret;
- }
- vvcam_csi_major = MAJOR(pdriver_dev->devt);
- vvcam_csi_minor = MINOR(pdriver_dev->devt);
- }
- else
- {
- pdriver_dev->devt = MKDEV(vvcam_csi_major, vvcam_csi_minor);
- ret = register_chrdev_region(pdriver_dev->devt, VIVCAM_CSI_MAXCNT, VIVCAM_CSI_NAME);
- if (ret)
- {
- pr_err("%s:register_chrdev_region error\n", __func__);
- return ret;
- }
- }
- vvcam_csi_class = class_create(THIS_MODULE, VIVCAM_CSI_NAME);
- if (IS_ERR(vvcam_csi_class))
- {
- pr_err("%s[%d]:class_create error!\n", __func__, __LINE__);
- return -EINVAL;
- }
- }
- pdriver_dev->devt = MKDEV(vvcam_csi_major, vvcam_csi_minor + pdev->id);
- cdev_init(&pdriver_dev->cdev, &vvcam_csi_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_csi_class;
- device_create(pdriver_dev->class, NULL, pdriver_dev->devt,
- pdriver_dev, "%s%d", VIVCAM_CSI_NAME, pdev->id);
- devise_register_index++;
- pr_info("exit %s\n", __func__);
- return ret;
- }
- static int vvcam_csi_remove(struct platform_device *pdev)
- {
- struct vvcam_csi_driver_dev *pdriver_dev;
- struct vvcam_csi_dev * pcsi_dev;
- pr_info("enter %s\n", __func__);
- devise_register_index--;
- pdriver_dev = platform_get_drvdata(pdev);
- pcsi_dev = pdriver_dev->private;
- iounmap(pcsi_dev->base);
- cdev_del(&pdriver_dev->cdev);
- device_destroy(pdriver_dev->class, pdriver_dev->devt);
- unregister_chrdev_region(pdriver_dev->devt, VIVCAM_CSI_MAXCNT);
- if (devise_register_index == 0)
- {
- class_destroy(pdriver_dev->class);
- }
- return 0;
- }
- static struct platform_driver vvcam_csi_driver = {
- .probe = vvcam_csi_probe,
- .remove = vvcam_csi_remove,
- .driver = {
- .name = VIVCAM_CSI_NAME,
- .owner = THIS_MODULE,
- }
- };
- static void vvcam_csi_pdev_release(struct device *dev)
- {
- pr_info("enter %s\n", __func__);
- }
- #ifdef WITH_VVCAM
- static struct resource vvcam_csi0_resource[] = {
- [0] = {
- .start = VVCSI0_BASE,
- .end = VVCSI0_BASE + VVCSI_SIZE - 1,
- .flags = IORESOURCE_MEM,
- },
- };
- static struct platform_device vvcam_csi_pdev = {
- .name = VIVCAM_CSI_NAME,
- .id = 0,
- .resource = vvcam_csi0_resource,
- .num_resources = 0,
- .dev.release = vvcam_csi_pdev_release,
- };
- #endif
- #ifdef WITH_VVCAM_DUAL
- static struct resource vvcam_csi1_resource[] = {
- [0] = {
- .start = VVCSI1_BASE,
- .end = VVCSI1_BASE + VVCSI_SIZE - 1,
- .flags = IORESOURCE_MEM,
- },
- };
- static struct platform_device vvcam_csi_dual_pdev = {
- .name = VIVCAM_CSI_NAME,
- .id = 1,
- .resource = vvcam_csi1_resource,
- .num_resources = 0,
- .dev.release = vvcam_csi_pdev_release,
- };
- #endif
- static int __init vvcam_csi_init_module(void)
- {
- int ret = 0;
- pr_info("enter %s\n", __func__);
- #ifdef WITH_VVCAM
- ret = platform_device_register(&vvcam_csi_pdev);
- if (ret)
- {
- pr_err("register platform device failed.\n");
- return ret;
- }
- #endif
- #ifdef WITH_VVCAM_DUAL
- ret = platform_device_register(&vvcam_csi_dual_pdev);
- if (ret)
- {
- pr_err("register platform device failed.\n");
- return ret;
- }
- #endif
- ret = platform_driver_register(&vvcam_csi_driver);
- if (ret)
- {
- pr_err("register platform driver failed.\n");
- return ret;
- }
- return ret;
- }
- static void __exit vvcam_csi_exit_module(void)
- {
- pr_info("enter %s\n", __func__);
- platform_driver_unregister(&vvcam_csi_driver);
- #ifdef WITH_VVCAM
- platform_device_unregister(&vvcam_csi_pdev);
- #endif
- #ifdef WITH_VVCAM_DUAL
- platform_device_unregister(&vvcam_csi_dual_pdev);
- #endif
- }
- module_init(vvcam_csi_init_module);
- module_exit(vvcam_csi_exit_module);
- MODULE_DESCRIPTION("CSI");
- MODULE_LICENSE("GPL");
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