platform框架

注册设备进入总线

platform_device_register函数

int platform_device_register(struct platform_device *pdev)

struct platform_device {const char	* name; 名字与驱动名一定要相同int		id;struct device	dev;u32		num_resources;struct resource	* resource;struct platform_device_id	*id_entry;/* arch specific additions */struct pdev_archdata	archdata;
};

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struct device {struct device		*parent;struct device_private	*p;struct kobject kobj;const char		*init_name;/* initial name of the device */struct device_type	*type;struct semaphore	sem;	/* semaphore to synchronize calls to* its driver.*/struct bus_type	*bus;		/* type of bus device is on */struct device_driver *driver;	/* which driver has allocated thisdevice */void		*platform_data;	/* Platform specific data, devicecore doesn't touch it */struct dev_pm_info	power;#ifdef CONFIG_NUMAint		numa_node;	/* NUMA node this device is close to */
#endifu64		*dma_mask;	/* dma mask (if dma'able device) */u64		coherent_dma_mask;/* Like dma_mask, but foralloc_coherent mappings asnot all hardware supports64 bit addresses for consistentallocations such descriptors. */struct device_dma_parameters *dma_parms;struct list_head	dma_pools;	/* dma pools (if dma'ble) */struct dma_coherent_mem	*dma_mem; /* internal for coherent memoverride *//* arch specific additions */struct dev_archdata	archdata;dev_t			devt;	/* dev_t, creates the sysfs "dev" */spinlock_t		devres_lock;struct list_head	devres_head;struct klist_node	knode_class;struct class		*class;const struct attribute_group **groups;	/* optional groups */void	(*release)(struct device *dev);
};

注册驱动进入总线

platform_driver_register函数

int platform_driver_register(struct platform_driver *drv)

struct platform_driver {int (*probe)(struct platform_device *);int (*remove)(struct platform_device *);void (*shutdown)(struct platform_device *);int (*suspend)(struct platform_device *, pm_message_t state);int (*resume)(struct platform_device *);struct device_driver driver;struct platform_device_id *id_table;
};

在probe中初始化
在remove中删除