问题描述
我正在编写一个 UART 驱动程序.我在第 14.Linux 设备模型章节中遇到了这两个函数.
I am writing a UART driver. I came across the two functions in the chapter 14.Linux Device Model.
int device_register(struct device *dev);
int driver_register(struct device_driver *drv);
由于 UART 是一个字符驱动程序，我使用 (alloc_chrdev_region) 动态创建了主编号，并使用 cdevadd() 将设备添加到内核.
Since UART is a char driver I have dynamically created the major number using (alloc_chrdev_region) and added the device to kernel by using cdevadd().
我在 omap-serial.c 中遇到了 uart_register_driver() 和 platform_driver_register().
I came across uart_register_driver() and platform_driver_register() in omap-serial.c.
我可以将 driver_register 映射到 platform_driver_register() 但 uart_register_driver 映射到 tty 相关函数.因为我是初学者我不想使用tty相关的功能.
I could map the driver_register with the platform_driver_register() but the uart_register_driver is mapped with tty related function.Since I am a beginner i do not want to use the tty related functions.
uart_register_driver和device_driver()有关系吗?
请解释一下.
推荐答案
@Dino，据我了解 device_register: 只不过是注册一个新设备到系统和链接，你可以通过 https://www.kernel.org/doc/htmldocs/device-drivers/API-设备注册.html.driver_register:注册平台驱动，该驱动支持基于平台驱动结构中指定的.name"和.of_match_table"的设备.结构平台驱动程序中的.name"和平台设备中的名称应该匹配，然后只有设备绑定到驱动程序并调用探测函数.请通过链接http://lwn.net/Articles/448499/
@Dino, as per my understanding device_register: is nothing but registering a new device to the system and link which you can go through https://www.kernel.org/doc/htmldocs/device-drivers/API-device-register.html. driver_register: registering a platform driver, this driver supports devices based on the ".name" and ".of_match_table" specified in the platform driver structure. ".name" in structure platform_driver and name in the platform_device should match then only device gets bind to driver and probe function is called. Please go through the link http://lwn.net/Articles/448499/
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