1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * HD audio Component Binding Interface
4 *
5 * Copyright (C) 2021 Cirrus Logic, Inc. and
6 * Cirrus Logic International Semiconductor Ltd.
7 */
8
9 #ifndef __HDA_COMPONENT_H__
10 #define __HDA_COMPONENT_H__
11
12 #include <linux/acpi.h>
13 #include <linux/component.h>
14 #include <linux/mutex.h>
15 #include <sound/hda_codec.h>
16
17 #define HDA_MAX_COMPONENTS 4
18 #define HDA_MAX_NAME_SIZE 50
19
20 struct hda_component {
21 struct device *dev;
22 char name[HDA_MAX_NAME_SIZE];
23 struct acpi_device *adev;
24 bool acpi_notifications_supported;
25 void (*acpi_notify)(acpi_handle handle, u32 event, struct device *dev);
26 void (*pre_playback_hook)(struct device *dev, int action);
27 void (*playback_hook)(struct device *dev, int action);
28 void (*post_playback_hook)(struct device *dev, int action);
29 };
30
31 struct hda_component_parent {
32 struct mutex mutex;
33 struct hda_codec *codec;
34 struct hda_component comps[HDA_MAX_COMPONENTS];
35 };
36
37 #ifdef CONFIG_ACPI
38 void hda_component_acpi_device_notify(struct hda_component_parent *parent,
39 acpi_handle handle, u32 event, void *data);
40 int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc,
41 struct hda_component_parent *parent,
42 acpi_notify_handler handler, void *data);
43 void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc,
44 struct hda_component_parent *parent,
45 acpi_notify_handler handler);
46 #else
47 static inline void hda_component_acpi_device_notify(struct hda_component_parent *parent,
48 acpi_handle handle,
49 u32 event,
50 void *data)
51 {
52 }
53
54 static inline int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc,
55 struct hda_component_parent *parent,
56 acpi_notify_handler handler,
57 void *data)
58
59 {
60 return 0;
61 }
62
63 static inline void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc,
64 struct hda_component_parent *parent,
65 acpi_notify_handler handler)
66 {
67 }
68 #endif /* ifdef CONFIG_ACPI */
69
70 void hda_component_manager_playback_hook(struct hda_component_parent *parent, int action);
71
72 int hda_component_manager_init(struct hda_codec *cdc,
73 struct hda_component_parent *parent, int count,
74 const char *bus, const char *hid,
75 const char *match_str,
76 const struct component_master_ops *ops);
77
78 void hda_component_manager_free(struct hda_codec *cdc,
79 const struct component_master_ops *ops);
80
81 int hda_component_manager_bind(struct hda_codec *cdc, struct hda_component_parent *parent);
82
83 static inline struct hda_component *hda_component_from_index(struct hda_component_parent *parent,
84 int index)
85 {
86 if (!parent)
87 return NULL;
88
89 if (index < 0 || index >= ARRAY_SIZE(parent->comps))
90 return NULL;
91
92 return &parent->comps[index];
93 }
94
95 static inline void hda_component_manager_unbind(struct hda_codec *cdc,
96 struct hda_component_parent *parent)
97 {
98 mutex_lock(&parent->mutex);
99 component_unbind_all(hda_codec_dev(cdc), parent);
100 mutex_unlock(&parent->mutex);
101 }
102
103 #endif /* ifndef __HDA_COMPONENT_H__ */
104
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.