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11#ifndef _PLATFORM_DEVICE_H_
12#define _PLATFORM_DEVICE_H_
13
14#include <linux/device.h>
15#include <linux/mod_devicetable.h>
16
17#define PLATFORM_DEVID_NONE (-1)
18#define PLATFORM_DEVID_AUTO (-2)
19
20struct mfd_cell;
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
32
33 struct mfd_cell *mfd_cell;
34
35
36 struct pdev_archdata archdata;
37};
38
39#define platform_get_device_id(pdev) ((pdev)->id_entry)
40
41#define to_platform_device(x) container_of((x), struct platform_device, dev)
42
43extern int platform_device_register(struct platform_device *);
44extern void platform_device_unregister(struct platform_device *);
45
46extern struct bus_type platform_bus_type;
47extern struct device platform_bus;
48
49extern void arch_setup_pdev_archdata(struct platform_device *);
50extern struct resource *platform_get_resource(struct platform_device *,
51 unsigned int, unsigned int);
52extern int platform_get_irq(struct platform_device *, unsigned int);
53extern struct resource *platform_get_resource_byname(struct platform_device *,
54 unsigned int,
55 const char *);
56extern int platform_get_irq_byname(struct platform_device *, const char *);
57extern int platform_add_devices(struct platform_device **, int);
58
59struct platform_device_info {
60 struct device *parent;
61 struct acpi_dev_node acpi_node;
62
63 const char *name;
64 int id;
65
66 const struct resource *res;
67 unsigned int num_res;
68
69 const void *data;
70 size_t size_data;
71 u64 dma_mask;
72};
73extern struct platform_device *platform_device_register_full(
74 const struct platform_device_info *pdevinfo);
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90static inline struct platform_device *platform_device_register_resndata(
91 struct device *parent, const char *name, int id,
92 const struct resource *res, unsigned int num,
93 const void *data, size_t size) {
94
95 struct platform_device_info pdevinfo = {
96 .parent = parent,
97 .name = name,
98 .id = id,
99 .res = res,
100 .num_res = num,
101 .data = data,
102 .size_data = size,
103 .dma_mask = 0,
104 };
105
106 return platform_device_register_full(&pdevinfo);
107}
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131static inline struct platform_device *platform_device_register_simple(
132 const char *name, int id,
133 const struct resource *res, unsigned int num)
134{
135 return platform_device_register_resndata(NULL, name, id,
136 res, num, NULL, 0);
137}
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155static inline struct platform_device *platform_device_register_data(
156 struct device *parent, const char *name, int id,
157 const void *data, size_t size)
158{
159 return platform_device_register_resndata(parent, name, id,
160 NULL, 0, data, size);
161}
162
163extern struct platform_device *platform_device_alloc(const char *name, int id);
164extern int platform_device_add_resources(struct platform_device *pdev,
165 const struct resource *res,
166 unsigned int num);
167extern int platform_device_add_data(struct platform_device *pdev,
168 const void *data, size_t size);
169extern int platform_device_add(struct platform_device *pdev);
170extern void platform_device_del(struct platform_device *pdev);
171extern void platform_device_put(struct platform_device *pdev);
172
173struct platform_driver {
174 int (*probe)(struct platform_device *);
175 int (*remove)(struct platform_device *);
176 void (*shutdown)(struct platform_device *);
177 int (*suspend)(struct platform_device *, pm_message_t state);
178 int (*resume)(struct platform_device *);
179 struct device_driver driver;
180 const struct platform_device_id *id_table;
181 bool prevent_deferred_probe;
182};
183
184#define to_platform_driver(drv) (container_of((drv), struct platform_driver, \
185 driver))
186
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189
190#define platform_driver_register(drv) \
191 __platform_driver_register(drv, THIS_MODULE)
192extern int __platform_driver_register(struct platform_driver *,
193 struct module *);
194extern void platform_driver_unregister(struct platform_driver *);
195
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198
199extern int platform_driver_probe(struct platform_driver *driver,
200 int (*probe)(struct platform_device *));
201
202static inline void *platform_get_drvdata(const struct platform_device *pdev)
203{
204 return dev_get_drvdata(&pdev->dev);
205}
206
207static inline void platform_set_drvdata(struct platform_device *pdev,
208 void *data)
209{
210 dev_set_drvdata(&pdev->dev, data);
211}
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217
218#define module_platform_driver(__platform_driver) \
219 module_driver(__platform_driver, platform_driver_register, \
220 platform_driver_unregister)
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226
227#define module_platform_driver_probe(__platform_driver, __platform_probe) \
228static int __init __platform_driver##_init(void) \
229{ \
230 return platform_driver_probe(&(__platform_driver), \
231 __platform_probe); \
232} \
233module_init(__platform_driver##_init); \
234static void __exit __platform_driver##_exit(void) \
235{ \
236 platform_driver_unregister(&(__platform_driver)); \
237} \
238module_exit(__platform_driver##_exit);
239
240extern struct platform_device *platform_create_bundle(
241 struct platform_driver *driver, int (*probe)(struct platform_device *),
242 struct resource *res, unsigned int n_res,
243 const void *data, size_t size);
244
245
246struct early_platform_driver {
247 const char *class_str;
248 struct platform_driver *pdrv;
249 struct list_head list;
250 int requested_id;
251 char *buffer;
252 int bufsize;
253};
254
255#define EARLY_PLATFORM_ID_UNSET -2
256#define EARLY_PLATFORM_ID_ERROR -3
257
258extern int early_platform_driver_register(struct early_platform_driver *epdrv,
259 char *buf);
260extern void early_platform_add_devices(struct platform_device **devs, int num);
261
262static inline int is_early_platform_device(struct platform_device *pdev)
263{
264 return !pdev->dev.driver;
265}
266
267extern void early_platform_driver_register_all(char *class_str);
268extern int early_platform_driver_probe(char *class_str,
269 int nr_probe, int user_only);
270extern void early_platform_cleanup(void);
271
272#define early_platform_init(class_string, platdrv) \
273 early_platform_init_buffer(class_string, platdrv, NULL, 0)
274
275#ifndef MODULE
276#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
277static __initdata struct early_platform_driver early_driver = { \
278 .class_str = class_string, \
279 .buffer = buf, \
280 .bufsize = bufsiz, \
281 .pdrv = platdrv, \
282 .requested_id = EARLY_PLATFORM_ID_UNSET, \
283}; \
284static int __init early_platform_driver_setup_func(char *buffer) \
285{ \
286 return early_platform_driver_register(&early_driver, buffer); \
287} \
288early_param(class_string, early_platform_driver_setup_func)
289#else
290#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
291static inline char *early_platform_driver_setup_func(void) \
292{ \
293 return bufsiz ? buf : NULL; \
294}
295#endif
296
297#ifdef CONFIG_SUSPEND
298extern int platform_pm_suspend(struct device *dev);
299extern int platform_pm_resume(struct device *dev);
300#else
301#define platform_pm_suspend NULL
302#define platform_pm_resume NULL
303#endif
304
305#ifdef CONFIG_HIBERNATE_CALLBACKS
306extern int platform_pm_freeze(struct device *dev);
307extern int platform_pm_thaw(struct device *dev);
308extern int platform_pm_poweroff(struct device *dev);
309extern int platform_pm_restore(struct device *dev);
310#else
311#define platform_pm_freeze NULL
312#define platform_pm_thaw NULL
313#define platform_pm_poweroff NULL
314#define platform_pm_restore NULL
315#endif
316
317#ifdef CONFIG_PM_SLEEP
318#define USE_PLATFORM_PM_SLEEP_OPS \
319 .suspend = platform_pm_suspend, \
320 .resume = platform_pm_resume, \
321 .freeze = platform_pm_freeze, \
322 .thaw = platform_pm_thaw, \
323 .poweroff = platform_pm_poweroff, \
324 .restore = platform_pm_restore,
325#else
326#define USE_PLATFORM_PM_SLEEP_OPS
327#endif
328
329#endif
330