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10#ifndef _PLATFORM_DEVICE_H_
11#define _PLATFORM_DEVICE_H_
12
13#include <linux/device.h>
14
15#define PLATFORM_DEVID_NONE (-1)
16#define PLATFORM_DEVID_AUTO (-2)
17
18struct mfd_cell;
19struct property_entry;
20struct platform_device_id;
21
22struct platform_device {
23 const char *name;
24 int id;
25 bool id_auto;
26 struct device dev;
27 u32 num_resources;
28 struct resource *resource;
29
30 const struct platform_device_id *id_entry;
31 char *driver_override;
32
33
34 struct mfd_cell *mfd_cell;
35
36
37 struct pdev_archdata archdata;
38};
39
40#define platform_get_device_id(pdev) ((pdev)->id_entry)
41
42#define dev_is_platform(dev) ((dev)->bus == &platform_bus_type)
43#define to_platform_device(x) container_of((x), struct platform_device, dev)
44
45extern int platform_device_register(struct platform_device *);
46extern void platform_device_unregister(struct platform_device *);
47
48extern struct bus_type platform_bus_type;
49extern struct device platform_bus;
50
51extern void arch_setup_pdev_archdata(struct platform_device *);
52extern struct resource *platform_get_resource(struct platform_device *,
53 unsigned int, unsigned int);
54extern void __iomem *
55devm_platform_ioremap_resource(struct platform_device *pdev,
56 unsigned int index);
57extern int platform_get_irq(struct platform_device *, unsigned int);
58extern int platform_irq_count(struct platform_device *);
59extern struct resource *platform_get_resource_byname(struct platform_device *,
60 unsigned int,
61 const char *);
62extern int platform_get_irq_byname(struct platform_device *, const char *);
63extern int platform_add_devices(struct platform_device **, int);
64
65struct platform_device_info {
66 struct device *parent;
67 struct fwnode_handle *fwnode;
68 bool of_node_reused;
69
70 const char *name;
71 int id;
72
73 const struct resource *res;
74 unsigned int num_res;
75
76 const void *data;
77 size_t size_data;
78 u64 dma_mask;
79
80 struct property_entry *properties;
81};
82extern struct platform_device *platform_device_register_full(
83 const struct platform_device_info *pdevinfo);
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99static inline struct platform_device *platform_device_register_resndata(
100 struct device *parent, const char *name, int id,
101 const struct resource *res, unsigned int num,
102 const void *data, size_t size) {
103
104 struct platform_device_info pdevinfo = {
105 .parent = parent,
106 .name = name,
107 .id = id,
108 .res = res,
109 .num_res = num,
110 .data = data,
111 .size_data = size,
112 .dma_mask = 0,
113 };
114
115 return platform_device_register_full(&pdevinfo);
116}
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140static inline struct platform_device *platform_device_register_simple(
141 const char *name, int id,
142 const struct resource *res, unsigned int num)
143{
144 return platform_device_register_resndata(NULL, name, id,
145 res, num, NULL, 0);
146}
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164static inline struct platform_device *platform_device_register_data(
165 struct device *parent, const char *name, int id,
166 const void *data, size_t size)
167{
168 return platform_device_register_resndata(parent, name, id,
169 NULL, 0, data, size);
170}
171
172extern struct platform_device *platform_device_alloc(const char *name, int id);
173extern int platform_device_add_resources(struct platform_device *pdev,
174 const struct resource *res,
175 unsigned int num);
176extern int platform_device_add_data(struct platform_device *pdev,
177 const void *data, size_t size);
178extern int platform_device_add_properties(struct platform_device *pdev,
179 const struct property_entry *properties);
180extern int platform_device_add(struct platform_device *pdev);
181extern void platform_device_del(struct platform_device *pdev);
182extern void platform_device_put(struct platform_device *pdev);
183
184struct platform_driver {
185 int (*probe)(struct platform_device *);
186 int (*remove)(struct platform_device *);
187 void (*shutdown)(struct platform_device *);
188 int (*suspend)(struct platform_device *, pm_message_t state);
189 int (*resume)(struct platform_device *);
190 struct device_driver driver;
191 const struct platform_device_id *id_table;
192 bool prevent_deferred_probe;
193};
194
195#define to_platform_driver(drv) (container_of((drv), struct platform_driver, \
196 driver))
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200
201#define platform_driver_register(drv) \
202 __platform_driver_register(drv, THIS_MODULE)
203extern int __platform_driver_register(struct platform_driver *,
204 struct module *);
205extern void platform_driver_unregister(struct platform_driver *);
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209
210#define platform_driver_probe(drv, probe) \
211 __platform_driver_probe(drv, probe, THIS_MODULE)
212extern int __platform_driver_probe(struct platform_driver *driver,
213 int (*probe)(struct platform_device *), struct module *module);
214
215static inline void *platform_get_drvdata(const struct platform_device *pdev)
216{
217 return dev_get_drvdata(&pdev->dev);
218}
219
220static inline void platform_set_drvdata(struct platform_device *pdev,
221 void *data)
222{
223 dev_set_drvdata(&pdev->dev, data);
224}
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230
231#define module_platform_driver(__platform_driver) \
232 module_driver(__platform_driver, platform_driver_register, \
233 platform_driver_unregister)
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241#define builtin_platform_driver(__platform_driver) \
242 builtin_driver(__platform_driver, platform_driver_register)
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249#define module_platform_driver_probe(__platform_driver, __platform_probe) \
250static int __init __platform_driver##_init(void) \
251{ \
252 return platform_driver_probe(&(__platform_driver), \
253 __platform_probe); \
254} \
255module_init(__platform_driver##_init); \
256static void __exit __platform_driver##_exit(void) \
257{ \
258 platform_driver_unregister(&(__platform_driver)); \
259} \
260module_exit(__platform_driver##_exit);
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268#define builtin_platform_driver_probe(__platform_driver, __platform_probe) \
269static int __init __platform_driver##_init(void) \
270{ \
271 return platform_driver_probe(&(__platform_driver), \
272 __platform_probe); \
273} \
274device_initcall(__platform_driver##_init); \
275
276#define platform_create_bundle(driver, probe, res, n_res, data, size) \
277 __platform_create_bundle(driver, probe, res, n_res, data, size, THIS_MODULE)
278extern struct platform_device *__platform_create_bundle(
279 struct platform_driver *driver, int (*probe)(struct platform_device *),
280 struct resource *res, unsigned int n_res,
281 const void *data, size_t size, struct module *module);
282
283int __platform_register_drivers(struct platform_driver * const *drivers,
284 unsigned int count, struct module *owner);
285void platform_unregister_drivers(struct platform_driver * const *drivers,
286 unsigned int count);
287
288#define platform_register_drivers(drivers, count) \
289 __platform_register_drivers(drivers, count, THIS_MODULE)
290
291
292struct early_platform_driver {
293 const char *class_str;
294 struct platform_driver *pdrv;
295 struct list_head list;
296 int requested_id;
297 char *buffer;
298 int bufsize;
299};
300
301#define EARLY_PLATFORM_ID_UNSET -2
302#define EARLY_PLATFORM_ID_ERROR -3
303
304extern int early_platform_driver_register(struct early_platform_driver *epdrv,
305 char *buf);
306extern void early_platform_add_devices(struct platform_device **devs, int num);
307
308static inline int is_early_platform_device(struct platform_device *pdev)
309{
310 return !pdev->dev.driver;
311}
312
313extern void early_platform_driver_register_all(char *class_str);
314extern int early_platform_driver_probe(char *class_str,
315 int nr_probe, int user_only);
316extern void early_platform_cleanup(void);
317
318#define early_platform_init(class_string, platdrv) \
319 early_platform_init_buffer(class_string, platdrv, NULL, 0)
320
321#ifndef MODULE
322#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
323static __initdata struct early_platform_driver early_driver = { \
324 .class_str = class_string, \
325 .buffer = buf, \
326 .bufsize = bufsiz, \
327 .pdrv = platdrv, \
328 .requested_id = EARLY_PLATFORM_ID_UNSET, \
329}; \
330static int __init early_platform_driver_setup_func(char *buffer) \
331{ \
332 return early_platform_driver_register(&early_driver, buffer); \
333} \
334early_param(class_string, early_platform_driver_setup_func)
335#else
336#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
337static inline char *early_platform_driver_setup_func(void) \
338{ \
339 return bufsiz ? buf : NULL; \
340}
341#endif
342
343#ifdef CONFIG_SUSPEND
344extern int platform_pm_suspend(struct device *dev);
345extern int platform_pm_resume(struct device *dev);
346#else
347#define platform_pm_suspend NULL
348#define platform_pm_resume NULL
349#endif
350
351#ifdef CONFIG_HIBERNATE_CALLBACKS
352extern int platform_pm_freeze(struct device *dev);
353extern int platform_pm_thaw(struct device *dev);
354extern int platform_pm_poweroff(struct device *dev);
355extern int platform_pm_restore(struct device *dev);
356#else
357#define platform_pm_freeze NULL
358#define platform_pm_thaw NULL
359#define platform_pm_poweroff NULL
360#define platform_pm_restore NULL
361#endif
362
363extern int platform_dma_configure(struct device *dev);
364
365#ifdef CONFIG_PM_SLEEP
366#define USE_PLATFORM_PM_SLEEP_OPS \
367 .suspend = platform_pm_suspend, \
368 .resume = platform_pm_resume, \
369 .freeze = platform_pm_freeze, \
370 .thaw = platform_pm_thaw, \
371 .poweroff = platform_pm_poweroff, \
372 .restore = platform_pm_restore,
373#else
374#define USE_PLATFORM_PM_SLEEP_OPS
375#endif
376
377#endif
378