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3764e82e JT |
1 | /* |
2 | * MEN Chameleon Bus. | |
3 | * | |
4 | * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de) | |
5 | * Author: Johannes Thumshirn <johannes.thumshirn@men.de> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the Free | |
9 | * Software Foundation; version 2 of the License. | |
10 | */ | |
11 | #ifndef _LINUX_MCB_H | |
12 | #define _LINUX_MCB_H | |
13 | ||
14 | #include <linux/mod_devicetable.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/irqreturn.h> | |
17 | ||
18 | struct mcb_driver; | |
19 | ||
20 | /** | |
21 | * struct mcb_bus - MEN Chameleon Bus | |
22 | * | |
23 | * @dev: pointer to carrier device | |
24 | * @children: the child busses | |
25 | * @bus_nr: mcb bus number | |
26 | */ | |
27 | struct mcb_bus { | |
28 | struct list_head children; | |
29 | struct device dev; | |
30 | int bus_nr; | |
31 | }; | |
32 | #define to_mcb_bus(b) container_of((b), struct mcb_bus, dev) | |
33 | ||
34 | /** | |
35 | * struct mcb_device - MEN Chameleon Bus device | |
36 | * | |
37 | * @bus_list: internal list handling for bus code | |
38 | * @dev: device in kernel representation | |
39 | * @bus: mcb bus the device is plugged to | |
40 | * @subordinate: subordinate MCBus in case of bridge | |
41 | * @is_added: flag to check if device is added to bus | |
42 | * @driver: associated mcb_driver | |
43 | * @id: mcb device id | |
44 | * @inst: instance in Chameleon table | |
45 | * @group: group in Chameleon table | |
46 | * @var: variant in Chameleon table | |
47 | * @bar: BAR in Chameleon table | |
48 | * @rev: revision in Chameleon table | |
49 | * @irq: IRQ resource | |
50 | * @memory: memory resource | |
51 | */ | |
52 | struct mcb_device { | |
53 | struct list_head bus_list; | |
54 | struct device dev; | |
55 | struct mcb_bus *bus; | |
56 | struct mcb_bus *subordinate; | |
57 | bool is_added; | |
58 | struct mcb_driver *driver; | |
59 | u16 id; | |
60 | int inst; | |
61 | int group; | |
62 | int var; | |
63 | int bar; | |
64 | int rev; | |
65 | struct resource irq; | |
66 | struct resource mem; | |
67 | }; | |
68 | #define to_mcb_device(x) container_of((x), struct mcb_device, dev) | |
69 | ||
70 | /** | |
71 | * struct mcb_driver - MEN Chameleon Bus device driver | |
72 | * | |
73 | * @driver: device_driver | |
74 | * @id_table: mcb id table | |
75 | * @probe: probe callback | |
76 | * @remove: remove callback | |
77 | * @shutdown: shutdown callback | |
78 | */ | |
79 | struct mcb_driver { | |
80 | struct device_driver driver; | |
81 | const struct mcb_device_id *id_table; | |
82 | int (*probe)(struct mcb_device *mdev, const struct mcb_device_id *id); | |
83 | void (*remove)(struct mcb_device *mdev); | |
84 | void (*shutdown)(struct mcb_device *mdev); | |
85 | }; | |
86 | #define to_mcb_driver(x) container_of((x), struct mcb_driver, driver) | |
87 | ||
88 | static inline void *mcb_get_drvdata(struct mcb_device *dev) | |
89 | { | |
90 | return dev_get_drvdata(&dev->dev); | |
91 | } | |
92 | ||
93 | static inline void mcb_set_drvdata(struct mcb_device *dev, void *data) | |
94 | { | |
95 | dev_set_drvdata(&dev->dev, data); | |
96 | } | |
97 | ||
98 | extern int __must_check __mcb_register_driver(struct mcb_driver *drv, | |
99 | struct module *owner, | |
100 | const char *mod_name); | |
101 | #define mcb_register_driver(driver) \ | |
102 | __mcb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) | |
103 | extern void mcb_unregister_driver(struct mcb_driver *driver); | |
104 | #define module_mcb_driver(__mcb_driver) \ | |
105 | module_driver(__mcb_driver, mcb_register_driver, mcb_unregister_driver); | |
106 | extern void mcb_bus_add_devices(const struct mcb_bus *bus); | |
107 | extern int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev); | |
108 | extern struct mcb_bus *mcb_alloc_bus(void); | |
109 | extern struct mcb_bus *mcb_bus_get(struct mcb_bus *bus); | |
110 | extern void mcb_bus_put(struct mcb_bus *bus); | |
111 | extern struct mcb_device *mcb_alloc_dev(struct mcb_bus *bus); | |
112 | extern void mcb_free_dev(struct mcb_device *dev); | |
113 | extern void mcb_release_bus(struct mcb_bus *bus); | |
114 | extern struct resource *mcb_request_mem(struct mcb_device *dev, | |
115 | const char *name); | |
116 | extern void mcb_release_mem(struct resource *mem); | |
117 | extern int mcb_get_irq(struct mcb_device *dev); | |
118 | ||
119 | #endif /* _LINUX_MCB_H */ |