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bbbf508d RK |
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 | ||
689ae231 JD |
16 | #define PLATFORM_DEVID_NONE (-1) |
17 | #define PLATFORM_DEVID_AUTO (-2) | |
18 | ||
e710d7d5 | 19 | struct mfd_cell; |
f4d05266 | 20 | struct property_entry; |
ac316725 | 21 | struct platform_device_id; |
e710d7d5 | 22 | |
bbbf508d | 23 | struct platform_device { |
6ae07f27 | 24 | const char *name; |
1359555e | 25 | int id; |
689ae231 | 26 | bool id_auto; |
bbbf508d RK |
27 | struct device dev; |
28 | u32 num_resources; | |
6ae07f27 | 29 | struct resource *resource; |
57fee4a5 | 30 | |
3d03ba4d | 31 | const struct platform_device_id *id_entry; |
3d713e0e | 32 | char *driver_override; /* Driver name to force a match */ |
d7aacadd | 33 | |
e710d7d5 SO |
34 | /* MFD cell pointer */ |
35 | struct mfd_cell *mfd_cell; | |
36 | ||
d7aacadd MD |
37 | /* arch specific additions */ |
38 | struct pdev_archdata archdata; | |
bbbf508d RK |
39 | }; |
40 | ||
57fee4a5 EM |
41 | #define platform_get_device_id(pdev) ((pdev)->id_entry) |
42 | ||
719cf71c | 43 | #define dev_is_platform(dev) ((dev)->bus == &platform_bus_type) |
bbbf508d RK |
44 | #define to_platform_device(x) container_of((x), struct platform_device, dev) |
45 | ||
46 | extern int platform_device_register(struct platform_device *); | |
47 | extern void platform_device_unregister(struct platform_device *); | |
48 | ||
49 | extern struct bus_type platform_bus_type; | |
50 | extern struct device platform_bus; | |
51 | ||
a77ce816 | 52 | extern void arch_setup_pdev_archdata(struct platform_device *); |
6ae07f27 FP |
53 | extern struct resource *platform_get_resource(struct platform_device *, |
54 | unsigned int, unsigned int); | |
7945f929 BG |
55 | extern void __iomem * |
56 | devm_platform_ioremap_resource(struct platform_device *pdev, | |
57 | unsigned int index); | |
bbbf508d | 58 | extern int platform_get_irq(struct platform_device *, unsigned int); |
4b83555d | 59 | extern int platform_irq_count(struct platform_device *); |
6ae07f27 FP |
60 | extern struct resource *platform_get_resource_byname(struct platform_device *, |
61 | unsigned int, | |
62 | const char *); | |
c0afe7ba | 63 | extern int platform_get_irq_byname(struct platform_device *, const char *); |
bbbf508d RK |
64 | extern int platform_add_devices(struct platform_device **, int); |
65 | ||
01dcc60a UKK |
66 | struct platform_device_info { |
67 | struct device *parent; | |
ce793486 | 68 | struct fwnode_handle *fwnode; |
2c1ea6ab | 69 | bool of_node_reused; |
01dcc60a UKK |
70 | |
71 | const char *name; | |
72 | int id; | |
73 | ||
74 | const struct resource *res; | |
75 | unsigned int num_res; | |
76 | ||
77 | const void *data; | |
78 | size_t size_data; | |
79 | u64 dma_mask; | |
00bbc1d8 | 80 | |
f4d05266 | 81 | struct property_entry *properties; |
01dcc60a UKK |
82 | }; |
83 | extern struct platform_device *platform_device_register_full( | |
5a3072be | 84 | const struct platform_device_info *pdevinfo); |
01dcc60a UKK |
85 | |
86 | /** | |
87 | * platform_device_register_resndata - add a platform-level device with | |
88 | * resources and platform-specific data | |
89 | * | |
90 | * @parent: parent device for the device we're adding | |
91 | * @name: base name of the device we're adding | |
92 | * @id: instance id | |
93 | * @res: set of resources that needs to be allocated for the device | |
94 | * @num: number of resources | |
95 | * @data: platform specific data for this platform device | |
96 | * @size: size of platform specific data | |
97 | * | |
98 | * Returns &struct platform_device pointer on success, or ERR_PTR() on error. | |
99 | */ | |
100 | static inline struct platform_device *platform_device_register_resndata( | |
44f28bde UKK |
101 | struct device *parent, const char *name, int id, |
102 | const struct resource *res, unsigned int num, | |
01dcc60a UKK |
103 | const void *data, size_t size) { |
104 | ||
105 | struct platform_device_info pdevinfo = { | |
106 | .parent = parent, | |
107 | .name = name, | |
108 | .id = id, | |
109 | .res = res, | |
110 | .num_res = num, | |
111 | .data = data, | |
112 | .size_data = size, | |
113 | .dma_mask = 0, | |
114 | }; | |
115 | ||
116 | return platform_device_register_full(&pdevinfo); | |
117 | } | |
44f28bde UKK |
118 | |
119 | /** | |
120 | * platform_device_register_simple - add a platform-level device and its resources | |
121 | * @name: base name of the device we're adding | |
122 | * @id: instance id | |
123 | * @res: set of resources that needs to be allocated for the device | |
124 | * @num: number of resources | |
125 | * | |
126 | * This function creates a simple platform device that requires minimal | |
127 | * resource and memory management. Canned release function freeing memory | |
128 | * allocated for the device allows drivers using such devices to be | |
129 | * unloaded without waiting for the last reference to the device to be | |
130 | * dropped. | |
131 | * | |
132 | * This interface is primarily intended for use with legacy drivers which | |
133 | * probe hardware directly. Because such drivers create sysfs device nodes | |
134 | * themselves, rather than letting system infrastructure handle such device | |
135 | * enumeration tasks, they don't fully conform to the Linux driver model. | |
136 | * In particular, when such drivers are built as modules, they can't be | |
137 | * "hotplugged". | |
138 | * | |
139 | * Returns &struct platform_device pointer on success, or ERR_PTR() on error. | |
140 | */ | |
141 | static inline struct platform_device *platform_device_register_simple( | |
142 | const char *name, int id, | |
143 | const struct resource *res, unsigned int num) | |
144 | { | |
145 | return platform_device_register_resndata(NULL, name, id, | |
146 | res, num, NULL, 0); | |
147 | } | |
148 | ||
149 | /** | |
150 | * platform_device_register_data - add a platform-level device with platform-specific data | |
151 | * @parent: parent device for the device we're adding | |
152 | * @name: base name of the device we're adding | |
153 | * @id: instance id | |
154 | * @data: platform specific data for this platform device | |
155 | * @size: size of platform specific data | |
156 | * | |
157 | * This function creates a simple platform device that requires minimal | |
158 | * resource and memory management. Canned release function freeing memory | |
159 | * allocated for the device allows drivers using such devices to be | |
160 | * unloaded without waiting for the last reference to the device to be | |
161 | * dropped. | |
162 | * | |
163 | * Returns &struct platform_device pointer on success, or ERR_PTR() on error. | |
164 | */ | |
165 | static inline struct platform_device *platform_device_register_data( | |
166 | struct device *parent, const char *name, int id, | |
167 | const void *data, size_t size) | |
168 | { | |
169 | return platform_device_register_resndata(parent, name, id, | |
170 | NULL, 0, data, size); | |
171 | } | |
bbbf508d | 172 | |
1359555e | 173 | extern struct platform_device *platform_device_alloc(const char *name, int id); |
0b7f1a7e GU |
174 | extern int platform_device_add_resources(struct platform_device *pdev, |
175 | const struct resource *res, | |
176 | unsigned int num); | |
6ae07f27 FP |
177 | extern int platform_device_add_data(struct platform_device *pdev, |
178 | const void *data, size_t size); | |
00bbc1d8 | 179 | extern int platform_device_add_properties(struct platform_device *pdev, |
277036f0 | 180 | const struct property_entry *properties); |
37c12e74 | 181 | extern int platform_device_add(struct platform_device *pdev); |
93ce3061 | 182 | extern void platform_device_del(struct platform_device *pdev); |
37c12e74 RK |
183 | extern void platform_device_put(struct platform_device *pdev); |
184 | ||
00d3dcdd RK |
185 | struct platform_driver { |
186 | int (*probe)(struct platform_device *); | |
187 | int (*remove)(struct platform_device *); | |
188 | void (*shutdown)(struct platform_device *); | |
189 | int (*suspend)(struct platform_device *, pm_message_t state); | |
190 | int (*resume)(struct platform_device *); | |
191 | struct device_driver driver; | |
831fad2f | 192 | const struct platform_device_id *id_table; |
3f9120b0 | 193 | bool prevent_deferred_probe; |
00d3dcdd RK |
194 | }; |
195 | ||
10dbc5e3 RH |
196 | #define to_platform_driver(drv) (container_of((drv), struct platform_driver, \ |
197 | driver)) | |
198 | ||
9447057e LC |
199 | /* |
200 | * use a macro to avoid include chaining to get THIS_MODULE | |
201 | */ | |
202 | #define platform_driver_register(drv) \ | |
203 | __platform_driver_register(drv, THIS_MODULE) | |
204 | extern int __platform_driver_register(struct platform_driver *, | |
205 | struct module *); | |
00d3dcdd RK |
206 | extern void platform_driver_unregister(struct platform_driver *); |
207 | ||
c67334fb DB |
208 | /* non-hotpluggable platform devices may use this so that probe() and |
209 | * its support may live in __init sections, conserving runtime memory. | |
210 | */ | |
c3b50dc2 WS |
211 | #define platform_driver_probe(drv, probe) \ |
212 | __platform_driver_probe(drv, probe, THIS_MODULE) | |
213 | extern int __platform_driver_probe(struct platform_driver *driver, | |
214 | int (*probe)(struct platform_device *), struct module *module); | |
c67334fb | 215 | |
71d64290 MKB |
216 | static inline void *platform_get_drvdata(const struct platform_device *pdev) |
217 | { | |
218 | return dev_get_drvdata(&pdev->dev); | |
219 | } | |
220 | ||
6ae07f27 FP |
221 | static inline void platform_set_drvdata(struct platform_device *pdev, |
222 | void *data) | |
71d64290 MKB |
223 | { |
224 | dev_set_drvdata(&pdev->dev, data); | |
225 | } | |
00d3dcdd | 226 | |
940ab889 GL |
227 | /* module_platform_driver() - Helper macro for drivers that don't do |
228 | * anything special in module init/exit. This eliminates a lot of | |
229 | * boilerplate. Each module may only use this macro once, and | |
230 | * calling it replaces module_init() and module_exit() | |
231 | */ | |
232 | #define module_platform_driver(__platform_driver) \ | |
907d0ed1 LPC |
233 | module_driver(__platform_driver, platform_driver_register, \ |
234 | platform_driver_unregister) | |
940ab889 | 235 | |
f309d444 PG |
236 | /* builtin_platform_driver() - Helper macro for builtin drivers that |
237 | * don't do anything special in driver init. This eliminates some | |
238 | * boilerplate. Each driver may only use this macro once, and | |
239 | * calling it replaces device_initcall(). Note this is meant to be | |
240 | * a parallel of module_platform_driver() above, but w/o _exit stuff. | |
241 | */ | |
242 | #define builtin_platform_driver(__platform_driver) \ | |
243 | builtin_driver(__platform_driver, platform_driver_register) | |
244 | ||
bab734fc FP |
245 | /* module_platform_driver_probe() - Helper macro for drivers that don't do |
246 | * anything special in module init/exit. This eliminates a lot of | |
247 | * boilerplate. Each module may only use this macro once, and | |
248 | * calling it replaces module_init() and module_exit() | |
249 | */ | |
250 | #define module_platform_driver_probe(__platform_driver, __platform_probe) \ | |
251 | static int __init __platform_driver##_init(void) \ | |
252 | { \ | |
253 | return platform_driver_probe(&(__platform_driver), \ | |
254 | __platform_probe); \ | |
255 | } \ | |
256 | module_init(__platform_driver##_init); \ | |
257 | static void __exit __platform_driver##_exit(void) \ | |
258 | { \ | |
259 | platform_driver_unregister(&(__platform_driver)); \ | |
260 | } \ | |
261 | module_exit(__platform_driver##_exit); | |
262 | ||
f309d444 PG |
263 | /* builtin_platform_driver_probe() - Helper macro for drivers that don't do |
264 | * anything special in device init. This eliminates some boilerplate. Each | |
265 | * driver may only use this macro once, and using it replaces device_initcall. | |
266 | * This is meant to be a parallel of module_platform_driver_probe above, but | |
267 | * without the __exit parts. | |
268 | */ | |
269 | #define builtin_platform_driver_probe(__platform_driver, __platform_probe) \ | |
270 | static int __init __platform_driver##_init(void) \ | |
271 | { \ | |
272 | return platform_driver_probe(&(__platform_driver), \ | |
273 | __platform_probe); \ | |
274 | } \ | |
275 | device_initcall(__platform_driver##_init); \ | |
276 | ||
291f653a WS |
277 | #define platform_create_bundle(driver, probe, res, n_res, data, size) \ |
278 | __platform_create_bundle(driver, probe, res, n_res, data, size, THIS_MODULE) | |
279 | extern struct platform_device *__platform_create_bundle( | |
6ae07f27 FP |
280 | struct platform_driver *driver, int (*probe)(struct platform_device *), |
281 | struct resource *res, unsigned int n_res, | |
291f653a | 282 | const void *data, size_t size, struct module *module); |
ecdf6ceb | 283 | |
dbe2256d TR |
284 | int __platform_register_drivers(struct platform_driver * const *drivers, |
285 | unsigned int count, struct module *owner); | |
286 | void platform_unregister_drivers(struct platform_driver * const *drivers, | |
287 | unsigned int count); | |
288 | ||
289 | #define platform_register_drivers(drivers, count) \ | |
290 | __platform_register_drivers(drivers, count, THIS_MODULE) | |
291 | ||
13977091 MD |
292 | /* early platform driver interface */ |
293 | struct early_platform_driver { | |
294 | const char *class_str; | |
295 | struct platform_driver *pdrv; | |
296 | struct list_head list; | |
297 | int requested_id; | |
c60e0504 MD |
298 | char *buffer; |
299 | int bufsize; | |
13977091 MD |
300 | }; |
301 | ||
302 | #define EARLY_PLATFORM_ID_UNSET -2 | |
303 | #define EARLY_PLATFORM_ID_ERROR -3 | |
304 | ||
305 | extern int early_platform_driver_register(struct early_platform_driver *epdrv, | |
306 | char *buf); | |
307 | extern void early_platform_add_devices(struct platform_device **devs, int num); | |
308 | ||
309 | static inline int is_early_platform_device(struct platform_device *pdev) | |
310 | { | |
311 | return !pdev->dev.driver; | |
312 | } | |
313 | ||
314 | extern void early_platform_driver_register_all(char *class_str); | |
315 | extern int early_platform_driver_probe(char *class_str, | |
316 | int nr_probe, int user_only); | |
317 | extern void early_platform_cleanup(void); | |
318 | ||
c60e0504 MD |
319 | #define early_platform_init(class_string, platdrv) \ |
320 | early_platform_init_buffer(class_string, platdrv, NULL, 0) | |
13977091 MD |
321 | |
322 | #ifndef MODULE | |
c60e0504 | 323 | #define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \ |
13977091 MD |
324 | static __initdata struct early_platform_driver early_driver = { \ |
325 | .class_str = class_string, \ | |
c60e0504 MD |
326 | .buffer = buf, \ |
327 | .bufsize = bufsiz, \ | |
328 | .pdrv = platdrv, \ | |
13977091 MD |
329 | .requested_id = EARLY_PLATFORM_ID_UNSET, \ |
330 | }; \ | |
c60e0504 | 331 | static int __init early_platform_driver_setup_func(char *buffer) \ |
13977091 | 332 | { \ |
c60e0504 | 333 | return early_platform_driver_register(&early_driver, buffer); \ |
13977091 MD |
334 | } \ |
335 | early_param(class_string, early_platform_driver_setup_func) | |
336 | #else /* MODULE */ | |
c60e0504 MD |
337 | #define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \ |
338 | static inline char *early_platform_driver_setup_func(void) \ | |
339 | { \ | |
340 | return bufsiz ? buf : NULL; \ | |
341 | } | |
13977091 MD |
342 | #endif /* MODULE */ |
343 | ||
69c9dd1e RW |
344 | #ifdef CONFIG_SUSPEND |
345 | extern int platform_pm_suspend(struct device *dev); | |
69c9dd1e | 346 | extern int platform_pm_resume(struct device *dev); |
69c9dd1e RW |
347 | #else |
348 | #define platform_pm_suspend NULL | |
349 | #define platform_pm_resume NULL | |
69c9dd1e RW |
350 | #endif |
351 | ||
352 | #ifdef CONFIG_HIBERNATE_CALLBACKS | |
353 | extern int platform_pm_freeze(struct device *dev); | |
69c9dd1e | 354 | extern int platform_pm_thaw(struct device *dev); |
69c9dd1e | 355 | extern int platform_pm_poweroff(struct device *dev); |
69c9dd1e | 356 | extern int platform_pm_restore(struct device *dev); |
69c9dd1e RW |
357 | #else |
358 | #define platform_pm_freeze NULL | |
359 | #define platform_pm_thaw NULL | |
360 | #define platform_pm_poweroff NULL | |
361 | #define platform_pm_restore NULL | |
69c9dd1e RW |
362 | #endif |
363 | ||
07397df2 NG |
364 | extern int platform_dma_configure(struct device *dev); |
365 | ||
69c9dd1e RW |
366 | #ifdef CONFIG_PM_SLEEP |
367 | #define USE_PLATFORM_PM_SLEEP_OPS \ | |
69c9dd1e RW |
368 | .suspend = platform_pm_suspend, \ |
369 | .resume = platform_pm_resume, \ | |
370 | .freeze = platform_pm_freeze, \ | |
371 | .thaw = platform_pm_thaw, \ | |
372 | .poweroff = platform_pm_poweroff, \ | |
9b39e73d | 373 | .restore = platform_pm_restore, |
69c9dd1e RW |
374 | #else |
375 | #define USE_PLATFORM_PM_SLEEP_OPS | |
376 | #endif | |
377 | ||
bbbf508d | 378 | #endif /* _PLATFORM_DEVICE_H_ */ |