1 /* 2 * platform_device.h - generic, centralized driver model 3 * 4 * Copyright (c) 2001-2003 Patrick Mochel <[email protected]> 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 17 struct platform_device { 18 const char * name; 19 int id; 20 struct device dev; 21 u32 num_resources; 22 struct resource * resource; 23 24 struct platform_device_id *id_entry; 25 }; 26 27 #define platform_get_device_id(pdev) ((pdev)->id_entry) 28 29 #define to_platform_device(x) container_of((x), struct platform_device, dev) 30 31 extern int platform_device_register(struct platform_device *); 32 extern void platform_device_unregister(struct platform_device *); 33 34 extern struct bus_type platform_bus_type; 35 extern struct device platform_bus; 36 37 extern struct resource *platform_get_resource(struct platform_device *, unsigned int, unsigned int); 38 extern int platform_get_irq(struct platform_device *, unsigned int); 39 extern struct resource *platform_get_resource_byname(struct platform_device *, unsigned int, const char *); 40 extern int platform_get_irq_byname(struct platform_device *, const char *); 41 extern int platform_add_devices(struct platform_device **, int); 42 43 extern struct platform_device *platform_device_register_simple(const char *, int id, 44 struct resource *, unsigned int); 45 extern struct platform_device *platform_device_register_data(struct device *, 46 const char *, int, const void *, size_t); 47 48 extern struct platform_device *platform_device_alloc(const char *name, int id); 49 extern int platform_device_add_resources(struct platform_device *pdev, struct resource *res, unsigned int num); 50 extern int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size); 51 extern int platform_device_add(struct platform_device *pdev); 52 extern void platform_device_del(struct platform_device *pdev); 53 extern void platform_device_put(struct platform_device *pdev); 54 55 struct platform_driver { 56 int (*probe)(struct platform_device *); 57 int (*remove)(struct platform_device *); 58 void (*shutdown)(struct platform_device *); 59 int (*suspend)(struct platform_device *, pm_message_t state); 60 int (*suspend_late)(struct platform_device *, pm_message_t state); 61 int (*resume_early)(struct platform_device *); 62 int (*resume)(struct platform_device *); 63 struct device_driver driver; 64 struct platform_device_id *id_table; 65 }; 66 67 extern int platform_driver_register(struct platform_driver *); 68 extern void platform_driver_unregister(struct platform_driver *); 69 70 /* non-hotpluggable platform devices may use this so that probe() and 71 * its support may live in __init sections, conserving runtime memory. 72 */ 73 extern int platform_driver_probe(struct platform_driver *driver, 74 int (*probe)(struct platform_device *)); 75 76 #define platform_get_drvdata(_dev) dev_get_drvdata(&(_dev)->dev) 77 #define platform_set_drvdata(_dev,data) dev_set_drvdata(&(_dev)->dev, (data)) 78 79 /* early platform driver interface */ 80 struct early_platform_driver { 81 const char *class_str; 82 struct platform_driver *pdrv; 83 struct list_head list; 84 int requested_id; 85 }; 86 87 #define EARLY_PLATFORM_ID_UNSET -2 88 #define EARLY_PLATFORM_ID_ERROR -3 89 90 extern int early_platform_driver_register(struct early_platform_driver *epdrv, 91 char *buf); 92 extern void early_platform_add_devices(struct platform_device **devs, int num); 93 94 static inline int is_early_platform_device(struct platform_device *pdev) 95 { 96 return !pdev->dev.driver; 97 } 98 99 extern void early_platform_driver_register_all(char *class_str); 100 extern int early_platform_driver_probe(char *class_str, 101 int nr_probe, int user_only); 102 extern void early_platform_cleanup(void); 103 104 105 #ifndef MODULE 106 #define early_platform_init(class_string, platform_driver) \ 107 static __initdata struct early_platform_driver early_driver = { \ 108 .class_str = class_string, \ 109 .pdrv = platform_driver, \ 110 .requested_id = EARLY_PLATFORM_ID_UNSET, \ 111 }; \ 112 static int __init early_platform_driver_setup_func(char *buf) \ 113 { \ 114 return early_platform_driver_register(&early_driver, buf); \ 115 } \ 116 early_param(class_string, early_platform_driver_setup_func) 117 #else /* MODULE */ 118 #define early_platform_init(class_string, platform_driver) 119 #endif /* MODULE */ 120 121 #endif /* _PLATFORM_DEVICE_H_ */ 122