/include/linux/platform_device.h
C++ Header | 139 lines | 100 code | 25 blank | 14 comment | 0 complexity | b40629627981f989a59f89d40fb671b3 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
1/* 2 * platform_device.h - generic, centralized driver model 3 * 4 * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org> 5 * 6 * This file is released under the GPLv2 7 * 8 * See Documentation/driver-model/ for more information. 9 */ 10 11#ifndef _PLATFORM_DEVICE_H_ 12#define _PLATFORM_DEVICE_H_ 13 14#include <linux/device.h> 15#include <linux/mod_devicetable.h> 16 17struct platform_device { 18 const char * name; 19 int id; 20 struct device dev; 21 u32 num_resources; 22 struct resource * resource; 23 24 const struct platform_device_id *id_entry; 25 26 /* arch specific additions */ 27 struct pdev_archdata archdata; 28}; 29 30#define platform_get_device_id(pdev) ((pdev)->id_entry) 31 32#define to_platform_device(x) container_of((x), struct platform_device, dev) 33 34extern int platform_device_register(struct platform_device *); 35extern void platform_device_unregister(struct platform_device *); 36 37extern struct bus_type platform_bus_type; 38extern struct device platform_bus; 39 40extern struct resource *platform_get_resource(struct platform_device *, unsigned int, unsigned int); 41extern int platform_get_irq(struct platform_device *, unsigned int); 42extern struct resource *platform_get_resource_byname(struct platform_device *, unsigned int, const char *); 43extern int platform_get_irq_byname(struct platform_device *, const char *); 44extern int platform_add_devices(struct platform_device **, int); 45 46extern struct platform_device *platform_device_register_simple(const char *, int id, 47 const struct resource *, unsigned int); 48extern struct platform_device *platform_device_register_data(struct device *, 49 const char *, int, const void *, size_t); 50 51extern struct platform_device *platform_device_alloc(const char *name, int id); 52extern int platform_device_add_resources(struct platform_device *pdev, 53 const struct resource *res, 54 unsigned int num); 55extern int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size); 56extern int platform_device_add(struct platform_device *pdev); 57extern void platform_device_del(struct platform_device *pdev); 58extern void platform_device_put(struct platform_device *pdev); 59 60struct platform_driver { 61 int (*probe)(struct platform_device *); 62 int (*remove)(struct platform_device *); 63 void (*shutdown)(struct platform_device *); 64 int (*suspend)(struct platform_device *, pm_message_t state); 65 int (*resume)(struct platform_device *); 66 struct device_driver driver; 67 const struct platform_device_id *id_table; 68}; 69 70extern int platform_driver_register(struct platform_driver *); 71extern void platform_driver_unregister(struct platform_driver *); 72 73/* non-hotpluggable platform devices may use this so that probe() and 74 * its support may live in __init sections, conserving runtime memory. 75 */ 76extern int platform_driver_probe(struct platform_driver *driver, 77 int (*probe)(struct platform_device *)); 78 79#define platform_get_drvdata(_dev) dev_get_drvdata(&(_dev)->dev) 80#define platform_set_drvdata(_dev,data) dev_set_drvdata(&(_dev)->dev, (data)) 81 82extern struct platform_device *platform_create_bundle(struct platform_driver *driver, 83 int (*probe)(struct platform_device *), 84 struct resource *res, unsigned int n_res, 85 const void *data, size_t size); 86 87/* early platform driver interface */ 88struct early_platform_driver { 89 const char *class_str; 90 struct platform_driver *pdrv; 91 struct list_head list; 92 int requested_id; 93 char *buffer; 94 int bufsize; 95}; 96 97#define EARLY_PLATFORM_ID_UNSET -2 98#define EARLY_PLATFORM_ID_ERROR -3 99 100extern int early_platform_driver_register(struct early_platform_driver *epdrv, 101 char *buf); 102extern void early_platform_add_devices(struct platform_device **devs, int num); 103 104static inline int is_early_platform_device(struct platform_device *pdev) 105{ 106 return !pdev->dev.driver; 107} 108 109extern void early_platform_driver_register_all(char *class_str); 110extern int early_platform_driver_probe(char *class_str, 111 int nr_probe, int user_only); 112extern void early_platform_cleanup(void); 113 114#define early_platform_init(class_string, platdrv) \ 115 early_platform_init_buffer(class_string, platdrv, NULL, 0) 116 117#ifndef MODULE 118#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \ 119static __initdata struct early_platform_driver early_driver = { \ 120 .class_str = class_string, \ 121 .buffer = buf, \ 122 .bufsize = bufsiz, \ 123 .pdrv = platdrv, \ 124 .requested_id = EARLY_PLATFORM_ID_UNSET, \ 125}; \ 126static int __init early_platform_driver_setup_func(char *buffer) \ 127{ \ 128 return early_platform_driver_register(&early_driver, buffer); \ 129} \ 130early_param(class_string, early_platform_driver_setup_func) 131#else /* MODULE */ 132#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \ 133static inline char *early_platform_driver_setup_func(void) \ 134{ \ 135 return bufsiz ? buf : NULL; \ 136} 137#endif /* MODULE */ 138 139#endif /* _PLATFORM_DEVICE_H_ */