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- /*
- * Copyright (C) 2021 Alibaba Group Holding Limited
- * Author: LuChongzhi <chongzhi.lcz@alibaba-inc.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #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/timer.h>
- #include <linux/kernel.h>
- #include <linux/init.h>
- #include <linux/ioctl.h>
- #include <linux/poll.h>
- #include <linux/workqueue.h>
- #include <linux/slab.h>
- #include <linux/proc_fs.h>
- #include <linux/debugfs.h>
- #include <linux/miscdevice.h>
- #include <linux/uaccess.h>
- #include <linux/interrupt.h>
- #include <linux/of.h>
- #define BM_DEMO_NAME "bm_demo"
- #define BM_DRIVER_MAXCNT 2
- struct bm_demo_driver_dev
- {
- struct cdev cdev;
- dev_t devt;
- struct class *class;
- struct mutex vvmutex;
- unsigned int device_idx;
- struct work_struct demo_wq;
- wait_queue_head_t demo_wait;
- int irq_num;
- void *private;
- };
- #if 0
- struct work_struct* pWorkQueue = NULL;
- static unsigned int bm_demo_major = 0;
- static unsigned int bm_demo_minor = 0;
- struct class *bm_demo_class;
- static unsigned int devise_register_index = 0;
- static bool bm_demo_irq = false;
- #endif
- static unsigned int bm_demo_poll(struct file * filp, poll_table *wait)
- {
- return 0;
- }
- void bm_demo_work(struct work_struct *work)
- {
- }
- irqreturn_t bm_demo_irq(int irq, void *dev_id)
- {
- pr_info("enter %s\n", __func__);
- return IRQ_HANDLED;
- }
- static int bm_demo_open(struct inode * inode, struct file * file)
- {
- pr_info("enter %s\n", __func__);
- return 0;
- };
- static long bm_demo_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
- {
- pr_info("enter %s\n", __func__);
- return 0;
- };
- static int bm_demo_release(struct inode * inode, struct file * file)
- {
- pr_info("enter %s\n", __func__);
- return 0;
- };
- static int bm_demo_mmap(struct file *pFile, struct vm_area_struct *vma)
- {
- pr_info("enter %s\n", __func__);
- return 0;
- };
- struct file_operations bm_demo_fops = {
- .owner = THIS_MODULE,
- .open = bm_demo_open,
- .release = bm_demo_release,
- .unlocked_ioctl = bm_demo_ioctl,
- .mmap = bm_demo_mmap,
- .poll = bm_demo_poll,
- };
- static int bm_demo_probe(struct platform_device *pdev)
- {
- pr_info("enter %s\n", __func__);
- return 0;
- }
- static int bm_demo_remove(struct platform_device *pdev)
- {
- pr_info("enter %s\n", __func__);
- return 0;
- }
- static const struct of_device_id bm_demo_of_match[] = {
- { .compatible = "thead,bm-demo", },
- { /* sentinel */ },
- };
- MODULE_DEVICE_TABLE(of, bm_demo_of_match);
- static struct platform_driver bm_demo_driver = {
- .probe = bm_demo_probe,
- .remove = bm_demo_remove,
- .driver = {
- .name = BM_DEMO_NAME,
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(bm_demo_of_match),
- }
- };
- static int __init bm_demo_init_module(void)
- {
- int ret = 0;
- pr_info("enter %s\n", __func__);
- ret = platform_driver_register(&bm_demo_driver);
- if (ret) {
- pr_err("register platform driver failed.\n");
- return ret;
- }
- return ret;
- }
- static void __exit bm_demo_exit_module(void)
- {
- pr_info("enter %s\n", __func__);
- platform_driver_unregister(&bm_demo_driver);
- }
- module_init(bm_demo_init_module);
- module_exit(bm_demo_exit_module);
- MODULE_AUTHOR("Lu Chongzhi");
- MODULE_DESCRIPTION("BAREMETAL-DEMO");
- MODULE_LICENSE("GPL");
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