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 11 struct 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 23 extern int sh_early_platform_driver_register(struct sh_early_platform_driver *epdrv, 24 char *buf); 25 extern void sh_early_platform_add_devices(struct platform_device **devs, int num); 26 is_sh_early_platform_device(struct platform_device * pdev)27 static inline int is_sh_early_platform_device(struct platform_device *pdev) 28 { 29 return !pdev->dev.driver; 30 } 31 32 extern void sh_early_platform_driver_register_all(char *class_str); 33 extern 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) \ 41 static __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 }; \ 48 static int __init sh_early_platform_driver_setup_func(char *buffer) \ 49 { \ 50 return sh_early_platform_driver_register(&early_driver, buffer); \ 51 } \ 52 early_param(class_string, sh_early_platform_driver_setup_func) 53 #else /* MODULE */ 54 #define sh_early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \ 55 static inline char *sh_early_platform_driver_setup_func(void) \ 56 { \ 57 return bufsiz ? buf : NULL; \ 58 } 59 #endif /* MODULE */ 60 61 #endif /* __PLATFORM_EARLY__ */ 62