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
gb_gbphy_get_data(struct gbphy_device * gdev)20 static inline void *gb_gbphy_get_data(struct gbphy_device *gdev)
21 {
22 return dev_get_drvdata(&gdev->dev);
23 }
24
gb_gbphy_set_data(struct gbphy_device * gdev,void * data)25 static inline void gb_gbphy_set_data(struct gbphy_device *gdev, void *data)
26 {
27 dev_set_drvdata(&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 *,
40 const struct gbphy_device_id *id);
41 void (*remove)(struct gbphy_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
gbphy_runtime_get_sync(struct gbphy_device * gbphy_dev)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
gbphy_runtime_put_autosuspend(struct gbphy_device * gbphy_dev)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
gbphy_runtime_get_noresume(struct gbphy_device * gbphy_dev)92 static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev)
93 {
94 pm_runtime_get_noresume(&gbphy_dev->dev);
95 }
96
gbphy_runtime_put_noidle(struct gbphy_device * gbphy_dev)97 static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev)
98 {
99 pm_runtime_put_noidle(&gbphy_dev->dev);
100 }
101 #else
gbphy_runtime_get_sync(struct gbphy_device * gbphy_dev)102 static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev) { return 0; }
gbphy_runtime_put_autosuspend(struct gbphy_device * gbphy_dev)103 static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev) {}
gbphy_runtime_get_noresume(struct gbphy_device * gbphy_dev)104 static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev) {}
gbphy_runtime_put_noidle(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
