In Linux, the platform_driver_register() function is used to register a platform driver.<\/p>\n
To use this function, the header file Here is a simple example code:<\/p>\n In the example above, the function my_driver_probe() is a callback function used to initialize the driver, while my_driver_remove() is a callback function used to uninstall the driver.<\/p>\n The structure my_driver defines information about the driver, with the .probe field specifying the initialization callback function, and the .remove field specifying the unload callback function.<\/p>\n The function my_driver_init() registers the driver by calling the platform_driver_register() function. If the registration is successful, the return value is 0; otherwise, a negative number is returned.<\/p>\n The function my_driver_exit() unloads the driver by calling the platform_driver_unregister() function.<\/p>\n It is important to note that when writing a driver program, you also need to implement other necessary functions, such as device initialization and resource allocation. The above example only provides a basic framework, and the specific implementation should be modified according to your needs.<\/p>\n","protected":false},"excerpt":{"rendered":" In Linux, the platform_driver_register() function is used to register a platform driver. To use this function, the header file must be included. Here is a simple example code: #include <linux\/init.h> #include <linux\/module.h> #include <linux\/platform_device.h> static int my_driver_probe(struct platform_device *pdev) { \/\/ \u5728\u8fd9\u91cc\u7f16\u5199\u9a71\u52a8\u7a0b\u5e8f\u7684\u521d\u59cb\u5316\u4ee3\u7801 return 0; } static int my_driver_remove(struct platform_device *pdev) { \/\/ \u5728\u8fd9\u91cc\u7f16\u5199\u9a71\u52a8\u7a0b\u5e8f\u7684\u5378\u8f7d\u4ee3\u7801 return 0; […]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-27509","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n#include<\/span> <linux\/init.h><\/span><\/span>\r\n#include<\/span> <linux\/module.h><\/span><\/span>\r\n#include<\/span> <linux\/platform_device.h><\/span><\/span>\r\n\r\nstatic<\/span> int<\/span> my_driver_probe<\/span>(struct<\/span> platform_device *pdev)<\/span>\r\n{\r\n \/\/ \u5728\u8fd9\u91cc\u7f16\u5199\u9a71\u52a8\u7a0b\u5e8f\u7684\u521d\u59cb\u5316\u4ee3\u7801<\/span>\r\n return<\/span> 0<\/span>;\r\n}\r\n\r\nstatic<\/span> int<\/span> my_driver_remove<\/span>(struct<\/span> platform_device *pdev)<\/span>\r\n{\r\n \/\/ \u5728\u8fd9\u91cc\u7f16\u5199\u9a71\u52a8\u7a0b\u5e8f\u7684\u5378\u8f7d\u4ee3\u7801<\/span>\r\n return<\/span> 0<\/span>;\r\n}\r\n\r\nstatic<\/span> struct<\/span> platform_driver<\/span> my_driver<\/span> =<\/span> {\r\n .probe = my_driver_probe,\r\n .remove = my_driver_remove,\r\n .driver = {\r\n .name = \"my_driver\"<\/span>,\r\n .owner = THIS_MODULE,\r\n },\r\n};\r\n\r\nstatic<\/span> int<\/span> __init my_driver_init<\/span>(void<\/span>)<\/span>\r\n{\r\n int<\/span> ret = platform_driver_register(&my_driver);\r\n if<\/span> (ret != 0<\/span>) {\r\n pr_err(\"Failed to register platform driver\\n\"<\/span>);\r\n return<\/span> ret;\r\n }\r\n\r\n pr_info(\"Platform driver registered\\n\"<\/span>);\r\n return<\/span> 0<\/span>;\r\n}\r\n\r\nstatic<\/span> void<\/span> __exit my_driver_exit<\/span>(void<\/span>)<\/span>\r\n{\r\n platform_driver_unregister(&my_driver);\r\n pr_info(\"Platform driver unregistered\\n\"<\/span>);\r\n}\r\n\r\nmodule_init(my_driver_init);\r\nmodule_exit(my_driver_exit);\r\n\r\nMODULE_LICENSE(\"GPL\"<\/span>);\r\nMODULE_AUTHOR(\"Your Name\"<\/span>);\r\nMODULE_DESCRIPTION(\"A simple platform driver\"<\/span>);\r\n<\/code><\/pre>\n