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