static int platform_match(struct device *dev, struct device_driver *drv)
{
struct platform_device *pdev = to_platform_device(dev);
struct platform_driver *pdrv = to_platform_driver(drv);
/* When driver_override is set, only bind to the matching driver */
if (pdev->driver_override)
return !strcmp(pdev->driver_override, drv->name);
/* Attempt an OF style match first */
if (of_driver_match_device(dev, drv))//第一種匹配方式,OF類型匹配,設備樹採用的匹配方式
return 1;
/* Then try ACPI style match */
if (acpi_driver_match_device(dev, drv))//第二種匹配方式,ACPI匹配
return 1;
/* Then try to match against the id table */
if (pdrv->id_table)
return platform_match_id(pdrv->id_table, pdev) != NULL;//第三種匹配方式,id_table匹配
/* fall-back to driver name match */
return (strcmp(pdev->name, drv->name) == 0);//第四種匹配方式,直接比較驅動和設備的name字段
}
可以看到,platform_match可以使用四種匹配方式
- OF類型匹配,設備樹採用的匹配方式
- ACPI匹配
- id_table匹配
- 直接比較驅動和設備的name字段
- 參考https://blog.csdn.net/a568713197/article/details/103069325