bundle.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Greybus bundles
 4 *
 5 * Copyright 2014 Google Inc.
 6 * Copyright 2014 Linaro Ltd.
 7 */
 8
 9#ifndef __BUNDLE_H
10#define __BUNDLE_H
11
12#include <linux/types.h>
13#include <linux/list.h>
14#include <linux/pm_runtime.h>
15#include <linux/device.h>
16
17#define	BUNDLE_ID_NONE	U8_MAX
18
19/* Greybus "public" definitions" */
20struct gb_bundle {
21	struct device		dev;
22	struct gb_interface	*intf;
23
24	u8			id;
25	u8			class;
26	u8			class_major;
27	u8			class_minor;
28
29	size_t			num_cports;
30	struct greybus_descriptor_cport *cport_desc;
31
32	struct list_head	connections;
33	u8			*state;
34
35	struct list_head	links;	/* interface->bundles */
36};
37#define to_gb_bundle(d) container_of(d, struct gb_bundle, dev)
38
39/* Greybus "private" definitions" */
40struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 bundle_id,
41				   u8 class);
42int gb_bundle_add(struct gb_bundle *bundle);
43void gb_bundle_destroy(struct gb_bundle *bundle);
44
45/* Bundle Runtime PM wrappers */
46#ifdef CONFIG_PM
47static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle)
48{
49	int retval;
50
51	retval = pm_runtime_get_sync(&bundle->dev);
52	if (retval < 0) {
53		dev_err(&bundle->dev,
54			"pm_runtime_get_sync failed: %d\n", retval);
55		pm_runtime_put_noidle(&bundle->dev);
56		return retval;
57	}
58
59	return 0;
60}
61
62static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle)
63{
64	int retval;
65
66	pm_runtime_mark_last_busy(&bundle->dev);
67	retval = pm_runtime_put_autosuspend(&bundle->dev);
68
69	return retval;
70}
71
72static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle)
73{
74	pm_runtime_get_noresume(&bundle->dev);
75}
76
77static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle)
78{
79	pm_runtime_put_noidle(&bundle->dev);
80}
81
82#else
83static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle)
84{ return 0; }
85static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle)
86{ return 0; }
87
88static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle) {}
89static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle) {}
90#endif
91
92#endif /* __BUNDLE_H */