mmc driver驱动流程

目录

1.mmc驱动结构体定义

2.mmc总线结构体定义

3.代码流程

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1.mmc驱动结构体定义

static struct mmc_driver mmc_driver = {
	.drv		= {
		.name	= "mmcblk",
		.pm	= &mmc_blk_pm_ops,
	},
	.probe		= mmc_blk_probe,
	.remove		= mmc_blk_remove,
	.shutdown	= mmc_blk_shutdown,
};

见下mmc_blk_probe的执行流程。

2.mmc总线结构体定义

static struct bus_type mmc_bus_type = {
	.name		= "mmc",
	.dev_groups	= mmc_dev_groups,
	.match		= mmc_bus_match,
	.uevent		= mmc_bus_uevent,
	.probe		= mmc_bus_probe,
	.remove		= mmc_bus_remove,
	.shutdown	= mmc_bus_shutdown,
	.pm		= &mmc_bus_pm_ops,
};

在mmc总线上进行驱动和设备的匹配，匹配成功调用mmc_bus_probe。

3.代码流程

module_init(mmc_blk_init)
    mmc_blk_init //drivers\mmc\core\block