platform_early.h (1850B)
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__ */