1/* SPDX--License-Identifier: GPL-2.0 */
 2
 3#ifndef __PLATFORM_EARLY__
 4#define __PLATFORM_EARLY__
 5
 6#include <linux/types.h>
 7#include <linux/platform_device.h>
 8#include <linux/pm_runtime.h>
 9#include <linux/slab.h>
10
11struct sh_early_platform_driver {
12	const char *class_str;
13	struct platform_driver *pdrv;
14	struct list_head list;
15	int requested_id;
16	char *buffer;
17	int bufsize;
18};
19
20#define EARLY_PLATFORM_ID_UNSET -2
21#define EARLY_PLATFORM_ID_ERROR -3
22
23extern int sh_early_platform_driver_register(struct sh_early_platform_driver *epdrv,
24					  char *buf);
25extern void sh_early_platform_add_devices(struct platform_device **devs, int num);
26
27static inline int is_sh_early_platform_device(struct platform_device *pdev)
28{
29	return !pdev->dev.driver;
30}
31
32extern void sh_early_platform_driver_register_all(char *class_str);
33extern int sh_early_platform_driver_probe(char *class_str,
34				       int nr_probe, int user_only);
35
36#define sh_early_platform_init(class_string, platdrv)		\
37	sh_early_platform_init_buffer(class_string, platdrv, NULL, 0)
38
39#ifndef MODULE
40#define sh_early_platform_init_buffer(class_string, platdrv, buf, bufsiz)	\
41static __initdata struct sh_early_platform_driver early_driver = {		\
42	.class_str = class_string,					\
43	.buffer = buf,							\
44	.bufsize = bufsiz,						\
45	.pdrv = platdrv,						\
46	.requested_id = EARLY_PLATFORM_ID_UNSET,			\
47};									\
48static int __init sh_early_platform_driver_setup_func(char *buffer)	\
49{									\
50	return sh_early_platform_driver_register(&early_driver, buffer);	\
51}									\
52early_param(class_string, sh_early_platform_driver_setup_func)
53#else /* MODULE */
54#define sh_early_platform_init_buffer(class_string, platdrv, buf, bufsiz)	\
55static inline char *sh_early_platform_driver_setup_func(void)		\
56{									\
57	return bufsiz ? buf : NULL;					\
58}
59#endif /* MODULE */
60
61#endif /* __PLATFORM_EARLY__ */