/* 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__ */