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
11struct 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
20static inline void *gb_gbphy_get_data(struct gbphy_device *gdev)
21{
22 return dev_get_drvdata(dev: &gdev->dev);
23}
24
25static inline void gb_gbphy_set_data(struct gbphy_device *gdev, void *data)
26{
27 dev_set_drvdata(dev: &gdev->dev, data);
28}
29
30struct gbphy_device_id {
31 __u8 protocol_id;
32};
33
34#define GBPHY_PROTOCOL(p) \
35 .protocol_id = (p),
36
37struct 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
48int gb_gbphy_register_driver(struct gbphy_driver *driver,
49 struct module *owner, const char *mod_name);
50void 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
69static 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
84static 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
92static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev)
93{
94 pm_runtime_get_noresume(dev: &gbphy_dev->dev);
95}
96
97static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev)
98{
99 pm_runtime_put_noidle(dev: &gbphy_dev->dev);
100}
101#else
102static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev) { return 0; }
103static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev) {}
104static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev) {}
105static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev) {}
106#endif
107
108#endif /* __GBPHY_H */
109
110

source code of linux/drivers/staging/greybus/gbphy.h