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" */
20 struct 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" */
40 struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 bundle_id,
41 				   u8 class);
42 int gb_bundle_add(struct gb_bundle *bundle);
43 void gb_bundle_destroy(struct gb_bundle *bundle);
44 
45 /* Bundle Runtime PM wrappers */
46 #ifdef CONFIG_PM
gb_pm_runtime_get_sync(struct gb_bundle * bundle)47 static 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 
gb_pm_runtime_put_autosuspend(struct gb_bundle * bundle)62 static 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 
gb_pm_runtime_get_noresume(struct gb_bundle * bundle)72 static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle)
73 {
74 	pm_runtime_get_noresume(&bundle->dev);
75 }
76 
gb_pm_runtime_put_noidle(struct gb_bundle * bundle)77 static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle)
78 {
79 	pm_runtime_put_noidle(&bundle->dev);
80 }
81 
82 #else
gb_pm_runtime_get_sync(struct gb_bundle * bundle)83 static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle)
84 { return 0; }
gb_pm_runtime_put_autosuspend(struct gb_bundle * bundle)85 static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle)
86 { return 0; }
87 
gb_pm_runtime_get_noresume(struct gb_bundle * bundle)88 static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle) {}
gb_pm_runtime_put_noidle(struct gb_bundle * bundle)89 static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle) {}
90 #endif
91 
92 #endif /* __BUNDLE_H */
93