/* SPDX--License-Identifier: GPL-2.0 */

#ifndef __PLATFORM_EARLY__
#define __PLATFORM_EARLY__

#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>

struct sh_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 sh_early_platform_driver_register(struct sh_early_platform_driver *epdrv,
                                          char *buf);
extern void sh_early_platform_add_devices(struct platform_device **devs, int num);

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

extern void sh_early_platform_driver_register_all(char *class_str);
extern int sh_early_platform_driver_probe(char *class_str,
                                       int nr_probe, int user_only);

#define sh_early_platform_init(class_string, platdrv)           \
        sh_early_platform_init_buffer(class_string, platdrv, NULL, 0)

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

#endif /* __PLATFORM_EARLY__ */