[mirror_ubuntu-bionic-kernel.git] / include / linux / platform_device.h

/*
 * platform_device.h - generic, centralized driver model
 *
 * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
 *
 * This file is released under the GPLv2
 *
 * See Documentation/driver-model/ for more information.
 */

#ifndef _PLATFORM_DEVICE_H_
#define _PLATFORM_DEVICE_H_

#include <linux/device.h>
#include <linux/mod_devicetable.h>

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

struct mfd_cell;
struct property_entry;

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

	const struct platform_device_id	*id_entry;
	char *driver_override; /* Driver name to force a match */

	/* 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 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 struct bus_type platform_bus_type;
extern struct device platform_bus;

extern void arch_setup_pdev_archdata(struct platform_device *);
extern struct resource *platform_get_resource(struct platform_device *,
					      unsigned int, unsigned int);
extern int platform_get_irq(struct platform_device *, unsigned int);
extern int platform_irq_count(struct platform_device *);
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_add_devices(struct platform_device **, int);

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

		const char *name;
		int id;

		const struct resource *res;
		unsigned int num_res;

		const void *data;
		size_t size_data;
		u64 dma_mask;

		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) {

	struct platform_device_info pdevinfo = {
		.parent = parent,
		.name = name,
		.id = id,
		.res = res,
		.num_res = num,
		.data = data,
		.size_data = size,
		.dma_mask = 0,
	};

	return platform_device_register_full(&pdevinfo);
}

/**
 * platform_device_register_simple - add a platform-level device and its resources
 * @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
 *
 * This function creates a simple platform device that requires minimal
 * resource and memory management. Canned release function freeing memory
 * allocated for the device allows drivers using such devices to be
 * unloaded without waiting for the last reference to the device to be
 * dropped.
 *
 * This interface is primarily intended for use with legacy drivers which
 * probe hardware directly.  Because such drivers create sysfs device nodes
 * themselves, rather than letting system infrastructure handle such device
 * enumeration tasks, they don't fully conform to the Linux driver model.
 * In particular, when such drivers are built as modules, they can't be
 * "hotplugged".
 *
 * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
 */
static inline struct platform_device *platform_device_register_simple(
		const char *name, int id,
		const struct resource *res, unsigned int num)
{
	return platform_device_register_resndata(NULL, name, id,
			res, num, NULL, 0);
}

/**
 * platform_device_register_data - add a platform-level device with platform-specific data
 * @parent: parent device for the device we're adding
 * @name: base name of the device we're adding
 * @id: instance id
 * @data: platform specific data for this platform device
 * @size: size of platform specific data
 *
 * This function creates a simple platform device that requires minimal
 * resource and memory management. Canned release function freeing memory
 * allocated for the device allows drivers using such devices to be
 * unloaded without waiting for the last reference to the device to be
 * dropped.
 *
 * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
 */
static inline struct platform_device *platform_device_register_data(
		struct device *parent, const char *name, int id,
		const void *data, size_t size)
{
	return platform_device_register_resndata(parent, name, id,
			NULL, 0, data, size);
}

extern struct platform_device *platform_device_alloc(const char *name, int id);
extern int platform_device_add_resources(struct platform_device *pdev,
					 const struct resource *res,
					 unsigned int num);
extern int platform_device_add_data(struct platform_device *pdev,
				    const void *data, size_t size);
extern int platform_device_add_properties(struct platform_device *pdev,
				const struct property_entry *properties);
extern int platform_device_add(struct platform_device *pdev);
extern void platform_device_del(struct platform_device *pdev);
extern void platform_device_put(struct platform_device *pdev);

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;
	const struct platform_device_id *id_table;
	bool prevent_deferred_probe;
};

#define to_platform_driver(drv)	(container_of((drv), struct platform_driver, \
				 driver))

/*
 * use a macro to avoid include chaining to get THIS_MODULE
 */
#define platform_driver_register(drv) \
	__platform_driver_register(drv, THIS_MODULE)
extern int __platform_driver_register(struct platform_driver *,
					struct module *);
extern void platform_driver_unregister(struct platform_driver *);

/* non-hotpluggable platform devices may use this so that probe() and
 * its support may live in __init sections, conserving runtime memory.
 */
#define platform_driver_probe(drv, probe) \
	__platform_driver_probe(drv, probe, THIS_MODULE)
extern int __platform_driver_probe(struct platform_driver *driver,
		int (*probe)(struct platform_device *), struct module *module);

static inline void *platform_get_drvdata(const struct platform_device *pdev)
{
	return dev_get_drvdata(&pdev->dev);
}

static inline void platform_set_drvdata(struct platform_device *pdev,
					void *data)
{
	dev_set_drvdata(&pdev->dev, data);
}

/* module_platform_driver() - Helper macro for drivers that don't do
 * anything special in module init/exit.  This eliminates a lot of
 * boilerplate.  Each module may only use this macro once, and
 * calling it replaces module_init() and module_exit()
 */
#define module_platform_driver(__platform_driver) \
	module_driver(__platform_driver, platform_driver_register, \
			platform_driver_unregister)

/* builtin_platform_driver() - Helper macro for builtin drivers that
 * don't do anything special in driver init.  This eliminates some
 * boilerplate.  Each driver may only use this macro once, and
 * calling it replaces device_initcall().  Note this is meant to be
 * a parallel of module_platform_driver() above, but w/o _exit stuff.
 */
#define builtin_platform_driver(__platform_driver) \
	builtin_driver(__platform_driver, platform_driver_register)

/* module_platform_driver_probe() - Helper macro for drivers that don't do
 * anything special in module init/exit.  This eliminates a lot of
 * boilerplate.  Each module may only use this macro once, and
 * calling it replaces module_init() and module_exit()
 */
#define module_platform_driver_probe(__platform_driver, __platform_probe) \
static int __init __platform_driver##_init(void) \
{ \
	return platform_driver_probe(&(__platform_driver), \
				     __platform_probe);    \
} \
module_init(__platform_driver##_init); \
static void __exit __platform_driver##_exit(void) \
{ \
	platform_driver_unregister(&(__platform_driver)); \
} \
module_exit(__platform_driver##_exit);

/* builtin_platform_driver_probe() - Helper macro for drivers that don't do
 * anything special in device init.  This eliminates some boilerplate.  Each
 * driver may only use this macro once, and using it replaces device_initcall.
 * This is meant to be a parallel of module_platform_driver_probe above, but
 * without the __exit parts.
 */
#define builtin_platform_driver_probe(__platform_driver, __platform_probe) \
static int __init __platform_driver##_init(void) \
{ \
	return platform_driver_probe(&(__platform_driver), \
				     __platform_probe);    \
} \
device_initcall(__platform_driver##_init); \

#define platform_create_bundle(driver, probe, res, n_res, data, size) \
	__platform_create_bundle(driver, probe, res, n_res, data, size, THIS_MODULE)
extern struct platform_device *__platform_create_bundle(
	struct platform_driver *driver, int (*probe)(struct platform_device *),
	struct resource *res, unsigned int n_res,
	const void *data, size_t size, struct module *module);

int __platform_register_drivers(struct platform_driver * const *drivers,
				unsigned int count, struct module *owner);
void platform_unregister_drivers(struct platform_driver * const *drivers,
				 unsigned int count);

#define platform_register_drivers(drivers, count) \
	__platform_register_drivers(drivers, count, THIS_MODULE)

/* early platform driver interface */
struct early_platform_driver {
	const char *class_str;
	struct platform_driver *pdrv;
	struct list_head list;
	int requested_id;
	char *buffer;
	int bufsize;
};

#define EARLY_PLATFORM_ID_UNSET -2
#define EARLY_PLATFORM_ID_ERROR -3

extern int early_platform_driver_register(struct early_platform_driver *epdrv,
					  char *buf);
extern void early_platform_add_devices(struct platform_device **devs, int num);

static inline int is_early_platform_device(struct platform_device *pdev)
{
	return !pdev->dev.driver;
}

extern void early_platform_driver_register_all(char *class_str);
extern int early_platform_driver_probe(char *class_str,
				       int nr_probe, int user_only);
extern void early_platform_cleanup(void);

#define early_platform_init(class_string, platdrv)		\
	early_platform_init_buffer(class_string, platdrv, NULL, 0)

#ifndef MODULE
#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz)	\
static __initdata struct early_platform_driver early_driver = {		\
	.class_str = class_string,					\
	.buffer = buf,							\
	.bufsize = bufsiz,						\
	.pdrv = platdrv,						\
	.requested_id = EARLY_PLATFORM_ID_UNSET,			\
};									\
static int __init early_platform_driver_setup_func(char *buffer)	\
{									\
	return early_platform_driver_register(&early_driver, buffer);	\
}									\
early_param(class_string, early_platform_driver_setup_func)
#else /* MODULE */
#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz)	\
static inline char *early_platform_driver_setup_func(void)		\
{									\
	return bufsiz ? buf : NULL;					\
}
#endif /* MODULE */

#ifdef CONFIG_SUSPEND
extern int platform_pm_suspend(struct device *dev);
extern int platform_pm_resume(struct device *dev);
#else
#define platform_pm_suspend		NULL
#define platform_pm_resume		NULL
#endif

#ifdef CONFIG_HIBERNATE_CALLBACKS
extern int platform_pm_freeze(struct device *dev);
extern int platform_pm_thaw(struct device *dev);
extern int platform_pm_poweroff(struct device *dev);
extern int platform_pm_restore(struct device *dev);
#else
#define platform_pm_freeze		NULL
#define platform_pm_thaw		NULL
#define platform_pm_poweroff		NULL
#define platform_pm_restore		NULL
#endif

#ifdef CONFIG_PM_SLEEP
#define USE_PLATFORM_PM_SLEEP_OPS \
	.suspend = platform_pm_suspend, \
	.resume = platform_pm_resume, \
	.freeze = platform_pm_freeze, \
	.thaw = platform_pm_thaw, \
	.poweroff = platform_pm_poweroff, \
	.restore = platform_pm_restore,
#else
#define USE_PLATFORM_PM_SLEEP_OPS
#endif

#endif /* _PLATFORM_DEVICE_H_ */
Commit	Line	Data
bbbf508d RK	1	/*
	2	* platform_device.h - generic, centralized driver model
	3	*
	4	* Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
	5	*
	6	* This file is released under the GPLv2
	7	*
	8	* See Documentation/driver-model/ for more information.
	9	*/
	10
	11	#ifndef _PLATFORM_DEVICE_H_
	12	#define _PLATFORM_DEVICE_H_
	13
	14	#include <linux/device.h>
57fee4a5	15	#include <linux/mod_devicetable.h>
bbbf508d	16
689ae231 JD	17	#define PLATFORM_DEVID_NONE (-1)
	18	#define PLATFORM_DEVID_AUTO (-2)
	19
e710d7d5	20	struct mfd_cell;
f4d05266	21	struct property_entry;
e710d7d5	22
bbbf508d	23	struct platform_device {
6ae07f27	24	const char *name;
1359555e	25	int id;
689ae231	26	bool id_auto;
bbbf508d RK	27	struct device dev;
bbbf508d RK	28	u32 num_resources;
6ae07f27	29	struct resource *resource;
57fee4a5	30
3d03ba4d	31	const struct platform_device_id *id_entry;
3d713e0e	32	char driver_override; / Driver name to force a match */
d7aacadd	33
e710d7d5 SO	34	/* MFD cell pointer */
	35	struct mfd_cell *mfd_cell;
	36
d7aacadd MD	37	/* arch specific additions */
d7aacadd MD	38	struct pdev_archdata archdata;
bbbf508d RK	39	};
bbbf508d RK	40
57fee4a5 EM	41	#define platform_get_device_id(pdev) ((pdev)->id_entry)
57fee4a5 EM	42
bbbf508d RK	43	#define to_platform_device(x) container_of((x), struct platform_device, dev)
	44
	45	extern int platform_device_register(struct platform_device *);
	46	extern void platform_device_unregister(struct platform_device *);
	47
	48	extern struct bus_type platform_bus_type;
	49	extern struct device platform_bus;
	50
a77ce816	51	extern void arch_setup_pdev_archdata(struct platform_device *);
6ae07f27 FP	52	extern struct resource platform_get_resource(struct platform_device ,
6ae07f27 FP	53	unsigned int, unsigned int);
bbbf508d	54	extern int platform_get_irq(struct platform_device *, unsigned int);
4b83555d	55	extern int platform_irq_count(struct platform_device *);
6ae07f27 FP	56	extern struct resource platform_get_resource_byname(struct platform_device ,
	57	unsigned int,
	58	const char *);
c0afe7ba	59	extern int platform_get_irq_byname(struct platform_device , const char );
bbbf508d RK	60	extern int platform_add_devices(struct platform_device **, int);
bbbf508d RK	61
01dcc60a UKK	62	struct platform_device_info {
01dcc60a UKK	63	struct device *parent;
ce793486	64	struct fwnode_handle *fwnode;
01dcc60a UKK	65
	66	const char *name;
	67	int id;
	68
	69	const struct resource *res;
	70	unsigned int num_res;
	71
	72	const void *data;
	73	size_t size_data;
	74	u64 dma_mask;
00bbc1d8	75
f4d05266	76	struct property_entry *properties;
01dcc60a UKK	77	};
01dcc60a UKK	78	extern struct platform_device *platform_device_register_full(
5a3072be	79	const struct platform_device_info *pdevinfo);
01dcc60a UKK	80
	81	/**
	82	* platform_device_register_resndata - add a platform-level device with
	83	* resources and platform-specific data
	84	*
	85	* @parent: parent device for the device we're adding
	86	* @name: base name of the device we're adding
	87	* @id: instance id
	88	* @res: set of resources that needs to be allocated for the device
	89	* @num: number of resources
	90	* @data: platform specific data for this platform device
	91	* @size: size of platform specific data
	92	*
	93	* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
	94	*/
	95	static inline struct platform_device *platform_device_register_resndata(
44f28bde UKK	96	struct device parent, const char name, int id,
44f28bde UKK	97	const struct resource *res, unsigned int num,
01dcc60a UKK	98	const void *data, size_t size) {
	99
	100	struct platform_device_info pdevinfo = {
	101	.parent = parent,
	102	.name = name,
	103	.id = id,
	104	.res = res,
	105	.num_res = num,
	106	.data = data,
	107	.size_data = size,
	108	.dma_mask = 0,
	109	};
	110
	111	return platform_device_register_full(&pdevinfo);
	112	}
44f28bde UKK	113
	114	/**
	115	* platform_device_register_simple - add a platform-level device and its resources
	116	* @name: base name of the device we're adding
	117	* @id: instance id
	118	* @res: set of resources that needs to be allocated for the device
	119	* @num: number of resources
	120	*
	121	* This function creates a simple platform device that requires minimal
	122	* resource and memory management. Canned release function freeing memory
	123	* allocated for the device allows drivers using such devices to be
	124	* unloaded without waiting for the last reference to the device to be
	125	* dropped.
	126	*
	127	* This interface is primarily intended for use with legacy drivers which
	128	* probe hardware directly. Because such drivers create sysfs device nodes
	129	* themselves, rather than letting system infrastructure handle such device
	130	* enumeration tasks, they don't fully conform to the Linux driver model.
	131	* In particular, when such drivers are built as modules, they can't be
	132	* "hotplugged".
	133	*
	134	* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
	135	*/
	136	static inline struct platform_device *platform_device_register_simple(
	137	const char *name, int id,
	138	const struct resource *res, unsigned int num)
	139	{
	140	return platform_device_register_resndata(NULL, name, id,
	141	res, num, NULL, 0);
	142	}
	143
	144	/**
	145	* platform_device_register_data - add a platform-level device with platform-specific data
	146	* @parent: parent device for the device we're adding
	147	* @name: base name of the device we're adding
	148	* @id: instance id
	149	* @data: platform specific data for this platform device
	150	* @size: size of platform specific data
	151	*
	152	* This function creates a simple platform device that requires minimal
	153	* resource and memory management. Canned release function freeing memory
	154	* allocated for the device allows drivers using such devices to be
	155	* unloaded without waiting for the last reference to the device to be
	156	* dropped.
	157	*
	158	* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
	159	*/
	160	static inline struct platform_device *platform_device_register_data(
	161	struct device parent, const char name, int id,
	162	const void *data, size_t size)
	163	{
	164	return platform_device_register_resndata(parent, name, id,
	165	NULL, 0, data, size);
	166	}
bbbf508d	167
1359555e	168	extern struct platform_device platform_device_alloc(const char name, int id);
0b7f1a7e GU	169	extern int platform_device_add_resources(struct platform_device *pdev,
	170	const struct resource *res,
	171	unsigned int num);
6ae07f27 FP	172	extern int platform_device_add_data(struct platform_device *pdev,
6ae07f27 FP	173	const void *data, size_t size);
00bbc1d8	174	extern int platform_device_add_properties(struct platform_device *pdev,
277036f0	175	const struct property_entry *properties);
37c12e74	176	extern int platform_device_add(struct platform_device *pdev);
93ce3061	177	extern void platform_device_del(struct platform_device *pdev);
37c12e74 RK	178	extern void platform_device_put(struct platform_device *pdev);
37c12e74 RK	179
00d3dcdd RK	180	struct platform_driver {
	181	int (probe)(struct platform_device );
	182	int (remove)(struct platform_device );
	183	void (shutdown)(struct platform_device );
	184	int (suspend)(struct platform_device , pm_message_t state);
	185	int (resume)(struct platform_device );
	186	struct device_driver driver;
831fad2f	187	const struct platform_device_id *id_table;
3f9120b0	188	bool prevent_deferred_probe;
00d3dcdd RK	189	};
00d3dcdd RK	190
10dbc5e3 RH	191	#define to_platform_driver(drv) (container_of((drv), struct platform_driver, \
	192	driver))
	193
9447057e LC	194	/*
	195	* use a macro to avoid include chaining to get THIS_MODULE
	196	*/
	197	#define platform_driver_register(drv) \
	198	__platform_driver_register(drv, THIS_MODULE)
	199	extern int __platform_driver_register(struct platform_driver *,
	200	struct module *);
00d3dcdd RK	201	extern void platform_driver_unregister(struct platform_driver *);
00d3dcdd RK	202
c67334fb DB	203	/* non-hotpluggable platform devices may use this so that probe() and
	204	* its support may live in __init sections, conserving runtime memory.
	205	*/
c3b50dc2 WS	206	#define platform_driver_probe(drv, probe) \
	207	__platform_driver_probe(drv, probe, THIS_MODULE)
	208	extern int __platform_driver_probe(struct platform_driver *driver,
	209	int (probe)(struct platform_device ), struct module *module);
c67334fb	210
71d64290 MKB	211	static inline void platform_get_drvdata(const struct platform_device pdev)
	212	{
	213	return dev_get_drvdata(&pdev->dev);
	214	}
	215
6ae07f27 FP	216	static inline void platform_set_drvdata(struct platform_device *pdev,
6ae07f27 FP	217	void *data)
71d64290 MKB	218	{
	219	dev_set_drvdata(&pdev->dev, data);
	220	}
00d3dcdd	221
940ab889 GL	222	/* module_platform_driver() - Helper macro for drivers that don't do
	223	* anything special in module init/exit. This eliminates a lot of
	224	* boilerplate. Each module may only use this macro once, and
	225	* calling it replaces module_init() and module_exit()
	226	*/
	227	#define module_platform_driver(__platform_driver) \
907d0ed1 LPC	228	module_driver(__platform_driver, platform_driver_register, \
907d0ed1 LPC	229	platform_driver_unregister)
940ab889	230
f309d444 PG	231	/* builtin_platform_driver() - Helper macro for builtin drivers that
	232	* don't do anything special in driver init. This eliminates some
	233	* boilerplate. Each driver may only use this macro once, and
	234	* calling it replaces device_initcall(). Note this is meant to be
	235	* a parallel of module_platform_driver() above, but w/o _exit stuff.
	236	*/
	237	#define builtin_platform_driver(__platform_driver) \
	238	builtin_driver(__platform_driver, platform_driver_register)
	239
bab734fc FP	240	/* module_platform_driver_probe() - Helper macro for drivers that don't do
	241	* anything special in module init/exit. This eliminates a lot of
	242	* boilerplate. Each module may only use this macro once, and
	243	* calling it replaces module_init() and module_exit()
	244	*/
	245	#define module_platform_driver_probe(__platform_driver, __platform_probe) \
	246	static int __init __platform_driver##_init(void) \
	247	{ \
	248	return platform_driver_probe(&(__platform_driver), \
	249	__platform_probe); \
	250	} \
	251	module_init(__platform_driver##_init); \
	252	static void __exit __platform_driver##_exit(void) \
	253	{ \
	254	platform_driver_unregister(&(__platform_driver)); \
	255	} \
	256	module_exit(__platform_driver##_exit);
	257
f309d444 PG	258	/* builtin_platform_driver_probe() - Helper macro for drivers that don't do
	259	* anything special in device init. This eliminates some boilerplate. Each
	260	* driver may only use this macro once, and using it replaces device_initcall.
	261	* This is meant to be a parallel of module_platform_driver_probe above, but
	262	* without the __exit parts.
	263	*/
	264	#define builtin_platform_driver_probe(__platform_driver, __platform_probe) \
	265	static int __init __platform_driver##_init(void) \
	266	{ \
	267	return platform_driver_probe(&(__platform_driver), \
	268	__platform_probe); \
	269	} \
	270	device_initcall(__platform_driver##_init); \
	271
291f653a WS	272	#define platform_create_bundle(driver, probe, res, n_res, data, size) \
	273	__platform_create_bundle(driver, probe, res, n_res, data, size, THIS_MODULE)
	274	extern struct platform_device *__platform_create_bundle(
6ae07f27 FP	275	struct platform_driver driver, int (probe)(struct platform_device *),
6ae07f27 FP	276	struct resource *res, unsigned int n_res,
291f653a	277	const void data, size_t size, struct module module);
ecdf6ceb	278
dbe2256d TR	279	int __platform_register_drivers(struct platform_driver * const *drivers,
	280	unsigned int count, struct module *owner);
	281	void platform_unregister_drivers(struct platform_driver * const *drivers,
	282	unsigned int count);
	283
	284	#define platform_register_drivers(drivers, count) \
	285	__platform_register_drivers(drivers, count, THIS_MODULE)
	286
13977091 MD	287	/* early platform driver interface */
	288	struct early_platform_driver {
	289	const char *class_str;
	290	struct platform_driver *pdrv;
	291	struct list_head list;
	292	int requested_id;
c60e0504 MD	293	char *buffer;
c60e0504 MD	294	int bufsize;
13977091 MD	295	};
	296
	297	#define EARLY_PLATFORM_ID_UNSET -2
	298	#define EARLY_PLATFORM_ID_ERROR -3
	299
	300	extern int early_platform_driver_register(struct early_platform_driver *epdrv,
	301	char *buf);
	302	extern void early_platform_add_devices(struct platform_device **devs, int num);
	303
	304	static inline int is_early_platform_device(struct platform_device *pdev)
	305	{
	306	return !pdev->dev.driver;
	307	}
	308
	309	extern void early_platform_driver_register_all(char *class_str);
	310	extern int early_platform_driver_probe(char *class_str,
	311	int nr_probe, int user_only);
	312	extern void early_platform_cleanup(void);
	313
c60e0504 MD	314	#define early_platform_init(class_string, platdrv) \
c60e0504 MD	315	early_platform_init_buffer(class_string, platdrv, NULL, 0)
13977091 MD	316
13977091 MD	317	#ifndef MODULE
c60e0504	318	#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
13977091 MD	319	static __initdata struct early_platform_driver early_driver = { \
13977091 MD	320	.class_str = class_string, \
c60e0504 MD	321	.buffer = buf, \
	322	.bufsize = bufsiz, \
	323	.pdrv = platdrv, \
13977091 MD	324	.requested_id = EARLY_PLATFORM_ID_UNSET, \
13977091 MD	325	}; \
c60e0504	326	static int __init early_platform_driver_setup_func(char *buffer) \
13977091	327	{ \
c60e0504	328	return early_platform_driver_register(&early_driver, buffer); \
13977091 MD	329	} \
	330	early_param(class_string, early_platform_driver_setup_func)
	331	#else /* MODULE */
c60e0504 MD	332	#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
	333	static inline char *early_platform_driver_setup_func(void) \
	334	{ \
	335	return bufsiz ? buf : NULL; \
	336	}
13977091 MD	337	#endif /* MODULE */
13977091 MD	338
69c9dd1e RW	339	#ifdef CONFIG_SUSPEND
69c9dd1e RW	340	extern int platform_pm_suspend(struct device *dev);
69c9dd1e	341	extern int platform_pm_resume(struct device *dev);
69c9dd1e RW	342	#else
	343	#define platform_pm_suspend NULL
	344	#define platform_pm_resume NULL
69c9dd1e RW	345	#endif
	346
	347	#ifdef CONFIG_HIBERNATE_CALLBACKS
	348	extern int platform_pm_freeze(struct device *dev);
69c9dd1e	349	extern int platform_pm_thaw(struct device *dev);
69c9dd1e	350	extern int platform_pm_poweroff(struct device *dev);
69c9dd1e	351	extern int platform_pm_restore(struct device *dev);
69c9dd1e RW	352	#else
	353	#define platform_pm_freeze NULL
	354	#define platform_pm_thaw NULL
	355	#define platform_pm_poweroff NULL
	356	#define platform_pm_restore NULL
69c9dd1e RW	357	#endif
	358
	359	#ifdef CONFIG_PM_SLEEP
	360	#define USE_PLATFORM_PM_SLEEP_OPS \
69c9dd1e RW	361	.suspend = platform_pm_suspend, \
	362	.resume = platform_pm_resume, \
	363	.freeze = platform_pm_freeze, \
	364	.thaw = platform_pm_thaw, \
	365	.poweroff = platform_pm_poweroff, \
9b39e73d	366	.restore = platform_pm_restore,
69c9dd1e RW	367	#else
	368	#define USE_PLATFORM_PM_SLEEP_OPS
	369	#endif
	370
bbbf508d	371	#endif /* _PLATFORM_DEVICE_H_ */