struct device {
	struct kobject kobj;
	struct device		*parent;

	struct device_private	*p;

	const char		*init_name; /* initial name of the device */
	const struct device_type *type;

	const struct bus_type	*bus;	/* type of bus device is on */
	struct device_driver *driver;	/* which driver has allocated this
					   device */
	void		*platform_data;	/* Platform specific data, device
					   core doesn't touch it */
	void		*driver_data;	/* Driver data, set and get with
					   dev_set_drvdata/dev_get_drvdata */
	struct mutex		mutex;	/* mutex to synchronize calls to
					 * its driver.
					 */

	struct dev_pm_info	power;
	struct dev_pm_domain	*pm_domain;

#ifdef CONFIG_PINCTRL
	struct dev_pin_info	*pins;
#endif
#ifdef CONFIG_DMA_OPS
	const struct dma_map_ops *dma_ops;
#endif
	u64		*dma_mask;	/* dma mask (if dma'able device) */
	u64		coherent_dma_mask;/* Like dma_mask, but for
					     alloc_coherent mappings as
					     not all hardware supports
					     64 bit addresses for consistent
					     allocations such descriptors. */
	u64		bus_dma_limit;	/* upstream dma constraint */
	const struct bus_dma_region *dma_range_map;

	struct device_dma_parameters *dma_parms;

	struct list_head	dma_pools;	/* dma pools (if dma'ble) */

#ifdef CONFIG_DMA_DECLARE_COHERENT
	struct dma_coherent_mem	*dma_mem; /* internal for coherent mem
					     override */
#endif
#ifdef CONFIG_DMA_CMA
	struct cma *cma_area;		/* contiguous memory area for dma
					   allocations */
#endif

	struct device_node	*of_node; /* associated device tree node */
	struct fwnode_handle	*fwnode; /* firmware device node */

	dev_t			devt;	/* dev_t, creates the sysfs "dev" */
	u32			id;	/* device instance */

	const struct class	*class;
	const struct attribute_group **groups;	/* optional groups */

	void	(*release)(struct device *dev);
};

struct device_driver {
	const char		*name;
	const struct bus_type	*bus;

	bool suppress_bind_attrs;	/* disables bind/unbind via sysfs */
	enum probe_type probe_type;

	const struct of_device_id	*of_match_table;

	int (*probe) (struct device *dev);
	void (*sync_state)(struct device *dev);
	int (*remove) (struct device *dev);
	void (*shutdown) (struct device *dev);
	int (*suspend) (struct device *dev, pm_message_t state);
	int (*resume) (struct device *dev);
	const struct attribute_group **groups;
	const struct attribute_group **dev_groups;

	const struct dev_pm_ops *pm;
	void (*coredump) (struct device *dev);

	struct driver_private *p;
};