[linux-block.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>

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

struct mfd_cell;
struct property_entry;
struct platform_device_id;

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 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 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 void __iomem *
devm_platform_ioremap_resource(struct platform_device *pdev,
			       unsigned int index);
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;
		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;

		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

extern int platform_dma_configure(struct device *dev);

#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>
	15
689ae231 JD	16	#define PLATFORM_DEVID_NONE (-1)
	17	#define PLATFORM_DEVID_AUTO (-2)
	18
e710d7d5	19	struct mfd_cell;
f4d05266	20	struct property_entry;
ac316725	21	struct platform_device_id;
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
719cf71c	43	#define dev_is_platform(dev) ((dev)->bus == &platform_bus_type)
bbbf508d RK	44	#define to_platform_device(x) container_of((x), struct platform_device, dev)
	45
	46	extern int platform_device_register(struct platform_device *);
	47	extern void platform_device_unregister(struct platform_device *);
	48
	49	extern struct bus_type platform_bus_type;
	50	extern struct device platform_bus;
	51
a77ce816	52	extern void arch_setup_pdev_archdata(struct platform_device *);
6ae07f27 FP	53	extern struct resource platform_get_resource(struct platform_device ,
6ae07f27 FP	54	unsigned int, unsigned int);
7945f929 BG	55	extern void __iomem *
	56	devm_platform_ioremap_resource(struct platform_device *pdev,
	57	unsigned int index);
bbbf508d	58	extern int platform_get_irq(struct platform_device *, unsigned int);
4b83555d	59	extern int platform_irq_count(struct platform_device *);
6ae07f27 FP	60	extern struct resource platform_get_resource_byname(struct platform_device ,
	61	unsigned int,
	62	const char *);
c0afe7ba	63	extern int platform_get_irq_byname(struct platform_device , const char );
bbbf508d RK	64	extern int platform_add_devices(struct platform_device **, int);
bbbf508d RK	65
01dcc60a UKK	66	struct platform_device_info {
01dcc60a UKK	67	struct device *parent;
ce793486	68	struct fwnode_handle *fwnode;
2c1ea6ab	69	bool of_node_reused;
01dcc60a UKK	70
	71	const char *name;
	72	int id;
	73
	74	const struct resource *res;
	75	unsigned int num_res;
	76
	77	const void *data;
	78	size_t size_data;
	79	u64 dma_mask;
00bbc1d8	80
f4d05266	81	struct property_entry *properties;
01dcc60a UKK	82	};
01dcc60a UKK	83	extern struct platform_device *platform_device_register_full(
5a3072be	84	const struct platform_device_info *pdevinfo);
01dcc60a UKK	85
	86	/**
	87	* platform_device_register_resndata - add a platform-level device with
	88	* resources and platform-specific data
	89	*
	90	* @parent: parent device for the device we're adding
	91	* @name: base name of the device we're adding
	92	* @id: instance id
	93	* @res: set of resources that needs to be allocated for the device
	94	* @num: number of resources
	95	* @data: platform specific data for this platform device
	96	* @size: size of platform specific data
	97	*
	98	* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
	99	*/
	100	static inline struct platform_device *platform_device_register_resndata(
44f28bde UKK	101	struct device parent, const char name, int id,
44f28bde UKK	102	const struct resource *res, unsigned int num,
01dcc60a UKK	103	const void *data, size_t size) {
	104
	105	struct platform_device_info pdevinfo = {
	106	.parent = parent,
	107	.name = name,
	108	.id = id,
	109	.res = res,
	110	.num_res = num,
	111	.data = data,
	112	.size_data = size,
	113	.dma_mask = 0,
	114	};
	115
	116	return platform_device_register_full(&pdevinfo);
	117	}
44f28bde UKK	118
	119	/**
	120	* platform_device_register_simple - add a platform-level device and its resources
	121	* @name: base name of the device we're adding
	122	* @id: instance id
	123	* @res: set of resources that needs to be allocated for the device
	124	* @num: number of resources
	125	*
	126	* This function creates a simple platform device that requires minimal
	127	* resource and memory management. Canned release function freeing memory
	128	* allocated for the device allows drivers using such devices to be
	129	* unloaded without waiting for the last reference to the device to be
	130	* dropped.
	131	*
	132	* This interface is primarily intended for use with legacy drivers which
	133	* probe hardware directly. Because such drivers create sysfs device nodes
	134	* themselves, rather than letting system infrastructure handle such device
	135	* enumeration tasks, they don't fully conform to the Linux driver model.
	136	* In particular, when such drivers are built as modules, they can't be
	137	* "hotplugged".
	138	*
	139	* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
	140	*/
	141	static inline struct platform_device *platform_device_register_simple(
	142	const char *name, int id,
	143	const struct resource *res, unsigned int num)
	144	{
	145	return platform_device_register_resndata(NULL, name, id,
	146	res, num, NULL, 0);
	147	}
	148
	149	/**
	150	* platform_device_register_data - add a platform-level device with platform-specific data
	151	* @parent: parent device for the device we're adding
	152	* @name: base name of the device we're adding
	153	* @id: instance id
	154	* @data: platform specific data for this platform device
	155	* @size: size of platform specific data
	156	*
	157	* This function creates a simple platform device that requires minimal
	158	* resource and memory management. Canned release function freeing memory
	159	* allocated for the device allows drivers using such devices to be
	160	* unloaded without waiting for the last reference to the device to be
	161	* dropped.
	162	*
	163	* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
	164	*/
	165	static inline struct platform_device *platform_device_register_data(
	166	struct device parent, const char name, int id,
	167	const void *data, size_t size)
	168	{
	169	return platform_device_register_resndata(parent, name, id,
	170	NULL, 0, data, size);
	171	}
bbbf508d	172
1359555e	173	extern struct platform_device platform_device_alloc(const char name, int id);
0b7f1a7e GU	174	extern int platform_device_add_resources(struct platform_device *pdev,
	175	const struct resource *res,
	176	unsigned int num);
6ae07f27 FP	177	extern int platform_device_add_data(struct platform_device *pdev,
6ae07f27 FP	178	const void *data, size_t size);
00bbc1d8	179	extern int platform_device_add_properties(struct platform_device *pdev,
277036f0	180	const struct property_entry *properties);
37c12e74	181	extern int platform_device_add(struct platform_device *pdev);
93ce3061	182	extern void platform_device_del(struct platform_device *pdev);
37c12e74 RK	183	extern void platform_device_put(struct platform_device *pdev);
37c12e74 RK	184
00d3dcdd RK	185	struct platform_driver {
	186	int (probe)(struct platform_device );
	187	int (remove)(struct platform_device );
	188	void (shutdown)(struct platform_device );
	189	int (suspend)(struct platform_device , pm_message_t state);
	190	int (resume)(struct platform_device );
	191	struct device_driver driver;
831fad2f	192	const struct platform_device_id *id_table;
3f9120b0	193	bool prevent_deferred_probe;
00d3dcdd RK	194	};
00d3dcdd RK	195
10dbc5e3 RH	196	#define to_platform_driver(drv) (container_of((drv), struct platform_driver, \
	197	driver))
	198
9447057e LC	199	/*
	200	* use a macro to avoid include chaining to get THIS_MODULE
	201	*/
	202	#define platform_driver_register(drv) \
	203	__platform_driver_register(drv, THIS_MODULE)
	204	extern int __platform_driver_register(struct platform_driver *,
	205	struct module *);
00d3dcdd RK	206	extern void platform_driver_unregister(struct platform_driver *);
00d3dcdd RK	207
c67334fb DB	208	/* non-hotpluggable platform devices may use this so that probe() and
	209	* its support may live in __init sections, conserving runtime memory.
	210	*/
c3b50dc2 WS	211	#define platform_driver_probe(drv, probe) \
	212	__platform_driver_probe(drv, probe, THIS_MODULE)
	213	extern int __platform_driver_probe(struct platform_driver *driver,
	214	int (probe)(struct platform_device ), struct module *module);
c67334fb	215
71d64290 MKB	216	static inline void platform_get_drvdata(const struct platform_device pdev)
	217	{
	218	return dev_get_drvdata(&pdev->dev);
	219	}
	220
6ae07f27 FP	221	static inline void platform_set_drvdata(struct platform_device *pdev,
6ae07f27 FP	222	void *data)
71d64290 MKB	223	{
	224	dev_set_drvdata(&pdev->dev, data);
	225	}
00d3dcdd	226
940ab889 GL	227	/* module_platform_driver() - Helper macro for drivers that don't do
	228	* anything special in module init/exit. This eliminates a lot of
	229	* boilerplate. Each module may only use this macro once, and
	230	* calling it replaces module_init() and module_exit()
	231	*/
	232	#define module_platform_driver(__platform_driver) \
907d0ed1 LPC	233	module_driver(__platform_driver, platform_driver_register, \
907d0ed1 LPC	234	platform_driver_unregister)
940ab889	235
f309d444 PG	236	/* builtin_platform_driver() - Helper macro for builtin drivers that
	237	* don't do anything special in driver init. This eliminates some
	238	* boilerplate. Each driver may only use this macro once, and
	239	* calling it replaces device_initcall(). Note this is meant to be
	240	* a parallel of module_platform_driver() above, but w/o _exit stuff.
	241	*/
	242	#define builtin_platform_driver(__platform_driver) \
	243	builtin_driver(__platform_driver, platform_driver_register)
	244
bab734fc FP	245	/* module_platform_driver_probe() - Helper macro for drivers that don't do
	246	* anything special in module init/exit. This eliminates a lot of
	247	* boilerplate. Each module may only use this macro once, and
	248	* calling it replaces module_init() and module_exit()
	249	*/
	250	#define module_platform_driver_probe(__platform_driver, __platform_probe) \
	251	static int __init __platform_driver##_init(void) \
	252	{ \
	253	return platform_driver_probe(&(__platform_driver), \
	254	__platform_probe); \
	255	} \
	256	module_init(__platform_driver##_init); \
	257	static void __exit __platform_driver##_exit(void) \
	258	{ \
	259	platform_driver_unregister(&(__platform_driver)); \
	260	} \
	261	module_exit(__platform_driver##_exit);
	262
f309d444 PG	263	/* builtin_platform_driver_probe() - Helper macro for drivers that don't do
	264	* anything special in device init. This eliminates some boilerplate. Each
	265	* driver may only use this macro once, and using it replaces device_initcall.
	266	* This is meant to be a parallel of module_platform_driver_probe above, but
	267	* without the __exit parts.
	268	*/
	269	#define builtin_platform_driver_probe(__platform_driver, __platform_probe) \
	270	static int __init __platform_driver##_init(void) \
	271	{ \
	272	return platform_driver_probe(&(__platform_driver), \
	273	__platform_probe); \
	274	} \
	275	device_initcall(__platform_driver##_init); \
	276
291f653a WS	277	#define platform_create_bundle(driver, probe, res, n_res, data, size) \
	278	__platform_create_bundle(driver, probe, res, n_res, data, size, THIS_MODULE)
	279	extern struct platform_device *__platform_create_bundle(
6ae07f27 FP	280	struct platform_driver driver, int (probe)(struct platform_device *),
6ae07f27 FP	281	struct resource *res, unsigned int n_res,
291f653a	282	const void data, size_t size, struct module module);
ecdf6ceb	283
dbe2256d TR	284	int __platform_register_drivers(struct platform_driver * const *drivers,
	285	unsigned int count, struct module *owner);
	286	void platform_unregister_drivers(struct platform_driver * const *drivers,
	287	unsigned int count);
	288
	289	#define platform_register_drivers(drivers, count) \
	290	__platform_register_drivers(drivers, count, THIS_MODULE)
	291
13977091 MD	292	/* early platform driver interface */
	293	struct early_platform_driver {
	294	const char *class_str;
	295	struct platform_driver *pdrv;
	296	struct list_head list;
	297	int requested_id;
c60e0504 MD	298	char *buffer;
c60e0504 MD	299	int bufsize;
13977091 MD	300	};
	301
	302	#define EARLY_PLATFORM_ID_UNSET -2
	303	#define EARLY_PLATFORM_ID_ERROR -3
	304
	305	extern int early_platform_driver_register(struct early_platform_driver *epdrv,
	306	char *buf);
	307	extern void early_platform_add_devices(struct platform_device **devs, int num);
	308
	309	static inline int is_early_platform_device(struct platform_device *pdev)
	310	{
	311	return !pdev->dev.driver;
	312	}
	313
	314	extern void early_platform_driver_register_all(char *class_str);
	315	extern int early_platform_driver_probe(char *class_str,
	316	int nr_probe, int user_only);
	317	extern void early_platform_cleanup(void);
	318
c60e0504 MD	319	#define early_platform_init(class_string, platdrv) \
c60e0504 MD	320	early_platform_init_buffer(class_string, platdrv, NULL, 0)
13977091 MD	321
13977091 MD	322	#ifndef MODULE
c60e0504	323	#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
13977091 MD	324	static __initdata struct early_platform_driver early_driver = { \
13977091 MD	325	.class_str = class_string, \
c60e0504 MD	326	.buffer = buf, \
	327	.bufsize = bufsiz, \
	328	.pdrv = platdrv, \
13977091 MD	329	.requested_id = EARLY_PLATFORM_ID_UNSET, \
13977091 MD	330	}; \
c60e0504	331	static int __init early_platform_driver_setup_func(char *buffer) \
13977091	332	{ \
c60e0504	333	return early_platform_driver_register(&early_driver, buffer); \
13977091 MD	334	} \
	335	early_param(class_string, early_platform_driver_setup_func)
	336	#else /* MODULE */
c60e0504 MD	337	#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
	338	static inline char *early_platform_driver_setup_func(void) \
	339	{ \
	340	return bufsiz ? buf : NULL; \
	341	}
13977091 MD	342	#endif /* MODULE */
13977091 MD	343
69c9dd1e RW	344	#ifdef CONFIG_SUSPEND
69c9dd1e RW	345	extern int platform_pm_suspend(struct device *dev);
69c9dd1e	346	extern int platform_pm_resume(struct device *dev);
69c9dd1e RW	347	#else
	348	#define platform_pm_suspend NULL
	349	#define platform_pm_resume NULL
69c9dd1e RW	350	#endif
	351
	352	#ifdef CONFIG_HIBERNATE_CALLBACKS
	353	extern int platform_pm_freeze(struct device *dev);
69c9dd1e	354	extern int platform_pm_thaw(struct device *dev);
69c9dd1e	355	extern int platform_pm_poweroff(struct device *dev);
69c9dd1e	356	extern int platform_pm_restore(struct device *dev);
69c9dd1e RW	357	#else
	358	#define platform_pm_freeze NULL
	359	#define platform_pm_thaw NULL
	360	#define platform_pm_poweroff NULL
	361	#define platform_pm_restore NULL
69c9dd1e RW	362	#endif
69c9dd1e RW	363
07397df2 NG	364	extern int platform_dma_configure(struct device *dev);
07397df2 NG	365
69c9dd1e RW	366	#ifdef CONFIG_PM_SLEEP
69c9dd1e RW	367	#define USE_PLATFORM_PM_SLEEP_OPS \
69c9dd1e RW	368	.suspend = platform_pm_suspend, \
	369	.resume = platform_pm_resume, \
	370	.freeze = platform_pm_freeze, \
	371	.thaw = platform_pm_thaw, \
	372	.poweroff = platform_pm_poweroff, \
9b39e73d	373	.restore = platform_pm_restore,
69c9dd1e RW	374	#else
	375	#define USE_PLATFORM_PM_SLEEP_OPS
	376	#endif
	377
bbbf508d	378	#endif /* _PLATFORM_DEVICE_H_ */