diff options
Diffstat (limited to 'arch/sh/include/asm/platform_early.h')
| -rw-r--r-- | arch/sh/include/asm/platform_early.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/sh/include/asm/platform_early.h b/arch/sh/include/asm/platform_early.h new file mode 100644 index 0000000000..fc802137c3 --- /dev/null +++ b/arch/sh/include/asm/platform_early.h @@ -0,0 +1,61 @@ +/* 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__ */ |