0
  $   ˆl–Ãa¾”ªClÊq@?q±\êbÑ¿Â„,¾ßÁÀ¿ 4S    /* SPDX-License-Identifier: GPL-2.0-only */
/*
 * platform_device.h - generic, centralized driver model
 *
 * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
 *
 * See Documentation/driver-api/driver-model/ for more information.
 */

#ifndef _PLATFORM_DEVICE_H_
#define _PLATFORM_DEVICE_H_

#include <linux/device.h>

#define PLATFORM_DEVID_NONE	(-1)
#define PLATFORM_DEVID_AUTO	(-2)

struct irq_affinity;
struct mfd_cell;
struct property_entry;
struct platform_device_id;

struct platform_device {
	const char	*name;
	int		id;
	bool		id_auto;
	struct device	dev;
	u64		platform_dma_mask;
	struct device_dma_parameters dma_parms;
	u32		num_resources;
	struct resource	*resource;

	const struct platform_device_id	*id_entry;
	/*
	 * Driver name to force a match.  Do not set directly, because core
	 * frees it.  Use driver_set_override() to set or clear it.
	 */
	const char *driver_override;

	/* MFD cell pointer */
	struct mfd_cell *mfd_cell;

	/* arch specific additions */
	struct pdev_archdata	archdata;
};

#define platform_get_device_id(pdev)	((pdev)->id_entry)

#define dev_is_platform(dev) ((dev)->bus == &platform_bus_type)
#define to_platform_device(x) container_of((x), struct platform_device, dev)

extern int platform_device_register(struct platform_device *);
extern void platform_device_unregister(struct platform_device *);

extern const struct bus_type platform_bus_type;
extern struct device platform_bus;

extern struct resource *platform_get_resource(struct platform_device *,
					      unsigned int, unsigned int);
extern struct resource *platform_get_mem_or_io(struct platform_device *,
					       unsigned int);

extern struct device *
platform_find_device_by_driver(struct device *start,
			       const struct device_driver *drv);
extern void __iomem *
devm_platform_get_and_ioremap_resource(struct platform_device *pdev,
				unsigned int index, struct resource **res);
extern void __iomem *
devm_platform_ioremap_resource(struct platform_device *pdev,
			       unsigned int index);
extern void __iomem *
devm_platform_ioremap_resource_byname(struct platform_device *pdev,
				      const char *name);
extern int platform_get_irq(struct platform_device *, unsigned int);
extern int platform_get_irq_optional(struct platform_device *, unsigned int);
extern int platform_irq_count(struct platform_device *);
extern int devm_platform_get_irqs_affinity(struct platform_device *dev,
					   struct irq_affinity *affd,
					   unsigned int minvec,
					   unsigned int maxvec,
					   int **irqs);
extern struct resource *platform_get_resource_byname(struct platform_device *,
						     unsigned int,
						     const char *);
extern int platform_get_irq_byname(struct platform_device *, const char *);
extern int platform_get_irq_byname_optional(struct platform_device *dev,
					    const char *name);
extern int platform_add_devices(struct platform_device **, int);

struct platform_device_info {
		struct device *parent;
		struct fwnode_handle *fwnode;
		bool of_node_reused;

		const char *name;
		int id;

		const struct resource *res;
		unsigned int num_res;

		const void *data;
		size_t size_data;
		u64 dma_mask;

		const struct property_entry *properties;
};
extern struct platform_device *platform_device_register_full(
		const struct platform_device_info *pdevinfo);

/**
 * platform_device_register_resndata - add a platform-level device with
 * resources and platform-specific data
 *
 * @parent: parent device for the device we're adding
 * @name: base name of the device we're adding
 * @id: instance id
 * @res: set of resources that needs to be allocated for the device
 * @num: number of resources
 * @data: platform specific data for this platform device
 * @size: size of platform specific data
 *
 * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
 */
static inline struct platform_device *platform_device_register_resndata(
		struct device *parent, const char *name, int id,
		const struct resource *res, unsigned int num,
		const void *data, size_t size)