1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Greybus Interface Block code
4 *
5 * Copyright 2014 Google Inc.
6 * Copyright 2014 Linaro Ltd.
7 */
8
9 #ifndef __INTERFACE_H
10 #define __INTERFACE_H
11
12 #include <linux/types.h>
13 #include <linux/device.h>
14
15 enum gb_interface_type {
16 GB_INTERFACE_TYPE_INVALID = 0,
17 GB_INTERFACE_TYPE_UNKNOWN,
18 GB_INTERFACE_TYPE_DUMMY,
19 GB_INTERFACE_TYPE_UNIPRO,
20 GB_INTERFACE_TYPE_GREYBUS,
21 };
22
23 #define GB_INTERFACE_QUIRK_NO_CPORT_FEATURES BIT(0)
24 #define GB_INTERFACE_QUIRK_NO_INIT_STATUS BIT(1)
25 #define GB_INTERFACE_QUIRK_NO_GMP_IDS BIT(2)
26 #define GB_INTERFACE_QUIRK_FORCED_DISABLE BIT(3)
27 #define GB_INTERFACE_QUIRK_LEGACY_MODE_SWITCH BIT(4)
28 #define GB_INTERFACE_QUIRK_NO_BUNDLE_ACTIVATE BIT(5)
29 #define GB_INTERFACE_QUIRK_NO_PM BIT(6)
30
31 struct gb_interface {
32 struct device dev;
33 struct gb_control *control;
34
35 struct list_head bundles;
36 struct list_head module_node;
37 struct list_head manifest_descs;
38 u8 interface_id; /* Physical location within the Endo */
39 u8 device_id;
40 u8 features; /* Feature flags set in the manifest */
41
42 enum gb_interface_type type;
43
44 u32 ddbl1_manufacturer_id;
45 u32 ddbl1_product_id;
46 u32 vendor_id;
47 u32 product_id;
48 u64 serial_number;
49
50 struct gb_host_device *hd;
51 struct gb_module *module;
52
53 unsigned long quirks;
54
55 struct mutex mutex;
56
57 bool disconnected;
58
59 bool ejected;
60 bool removed;
61 bool active;
62 bool enabled;
63 bool mode_switch;
64 bool dme_read;
65
66 struct work_struct mode_switch_work;
67 struct completion mode_switch_completion;
68 };
69 #define to_gb_interface(d) container_of(d, struct gb_interface, dev)
70
71 struct gb_interface *gb_interface_create(struct gb_module *module,
72 u8 interface_id);
73 int gb_interface_activate(struct gb_interface *intf);
74 void gb_interface_deactivate(struct gb_interface *intf);
75 int gb_interface_enable(struct gb_interface *intf);
76 void gb_interface_disable(struct gb_interface *intf);
77 int gb_interface_add(struct gb_interface *intf);
78 void gb_interface_del(struct gb_interface *intf);
79 void gb_interface_put(struct gb_interface *intf);
80 void gb_interface_mailbox_event(struct gb_interface *intf, u16 result,
81 u32 mailbox);
82
83 int gb_interface_request_mode_switch(struct gb_interface *intf);
84
85 #endif /* __INTERFACE_H */
86
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