目录

​​1.mmc总线结构体定义​​

​​2.mmc host结构体​​

​​3.mmc stdio​​

​​4.代码流程​​

1.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,
};

2.mmc host结构体

static struct class mmc_host_class = {
  .name   = "mmc_host",
  .dev_release  = mmc_host_classdev_release,
  .shutdown_pre = mmc_host_classdev_shutdown,
  .pm   = MMC_HOST_CLASS_DEV_PM_OPS,
};

3.mmc stdio

static struct bus_type sdio_bus_type = {
  .name   = "sdio",
  .dev_groups = sdio_dev_groups,
  .match    = sdio_bus_match,
  .uevent   = sdio_bus_uevent,
  .probe    = sdio_bus_probe,
  .remove   = sdio_bus_remove,
  .pm   = &sdio_bus_pm_ops,
};

4.代码流程

subsys_initcall(mmc_init)
    mmc_init
        mmc_register_bus
            bus_register(&mmc_bus_type)
        mmc_register_host_class
            class_register(&mmc_host_class)
        sdio_register_bus
            bus_register(&sdio_bus_type)