1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Greybus Bridged-Phy Bus driver |
4 | * |
5 | * Copyright 2016 Google Inc. |
6 | */ |
7 | |
8 | #ifndef __GBPHY_H |
9 | #define __GBPHY_H |
10 | |
11 | struct gbphy_device { |
12 | u32 id; |
13 | struct greybus_descriptor_cport *cport_desc; |
14 | struct gb_bundle *bundle; |
15 | struct list_head list; |
16 | struct device dev; |
17 | }; |
18 | #define to_gbphy_dev(d) container_of(d, struct gbphy_device, dev) |
19 | |
20 | static inline void *gb_gbphy_get_data(struct gbphy_device *gdev) |
21 | { |
22 | return dev_get_drvdata(dev: &gdev->dev); |
23 | } |
24 | |
25 | static inline void gb_gbphy_set_data(struct gbphy_device *gdev, void *data) |
26 | { |
27 | dev_set_drvdata(dev: &gdev->dev, data); |
28 | } |
29 | |
30 | struct gbphy_device_id { |
31 | __u8 protocol_id; |
32 | }; |
33 | |
34 | #define GBPHY_PROTOCOL(p) \ |
35 | .protocol_id = (p), |
36 | |
37 | struct gbphy_driver { |
38 | const char *name; |
39 | int (*probe)(struct gbphy_device *device, |
40 | const struct gbphy_device_id *id); |
41 | void (*remove)(struct gbphy_device *device); |
42 | const struct gbphy_device_id *id_table; |
43 | |
44 | struct device_driver driver; |
45 | }; |
46 | #define to_gbphy_driver(d) container_of(d, struct gbphy_driver, driver) |
47 | |
48 | int gb_gbphy_register_driver(struct gbphy_driver *driver, |
49 | struct module *owner, const char *mod_name); |
50 | void gb_gbphy_deregister_driver(struct gbphy_driver *driver); |
51 | |
52 | #define gb_gbphy_register(driver) \ |
53 | gb_gbphy_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) |
54 | #define gb_gbphy_deregister(driver) \ |
55 | gb_gbphy_deregister_driver(driver) |
56 | |
57 | /** |
58 | * module_gbphy_driver() - Helper macro for registering a gbphy driver |
59 | * @__gbphy_driver: gbphy_driver structure |
60 | * |
61 | * Helper macro for gbphy drivers to set up proper module init / exit |
62 | * functions. Replaces module_init() and module_exit() and keeps people from |
63 | * printing pointless things to the kernel log when their driver is loaded. |
64 | */ |
65 | #define module_gbphy_driver(__gbphy_driver) \ |
66 | module_driver(__gbphy_driver, gb_gbphy_register, gb_gbphy_deregister) |
67 | |
68 | #ifdef CONFIG_PM |
69 | static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev) |
70 | { |
71 | struct device *dev = &gbphy_dev->dev; |
72 | int ret; |
73 | |
74 | ret = pm_runtime_get_sync(dev); |
75 | if (ret < 0) { |
76 | dev_err(dev, "pm_runtime_get_sync failed: %d\n" , ret); |
77 | pm_runtime_put_noidle(dev); |
78 | return ret; |
79 | } |
80 | |
81 | return 0; |
82 | } |
83 | |
84 | static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev) |
85 | { |
86 | struct device *dev = &gbphy_dev->dev; |
87 | |
88 | pm_runtime_mark_last_busy(dev); |
89 | pm_runtime_put_autosuspend(dev); |
90 | } |
91 | |
92 | static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev) |
93 | { |
94 | pm_runtime_get_noresume(dev: &gbphy_dev->dev); |
95 | } |
96 | |
97 | static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev) |
98 | { |
99 | pm_runtime_put_noidle(dev: &gbphy_dev->dev); |
100 | } |
101 | #else |
102 | static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev) { return 0; } |
103 | static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev) {} |
104 | static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev) {} |
105 | static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev) {} |
106 | #endif |
107 | |
108 | #endif /* __GBPHY_H */ |
109 | |
110 | |