1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
// SPDX-License-Identifier: GPL-2.0
/*
* Greybus Audio Device Class Protocol helpers
*
* Copyright 2015-2016 Google Inc.
*/
#include "greybus.h"
#include "greybus_protocols.h"
#include "audio_apbridgea.h"
#include "audio_codec.h"
int gb_audio_apbridgea_set_config(struct gb_connection *connection,
__u16 i2s_port, __u32 format, __u32 rate,
__u32 mclk_freq)
{
struct audio_apbridgea_set_config_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_CONFIG;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
req.format = cpu_to_le32(format);
req.rate = cpu_to_le32(rate);
req.mclk_freq = cpu_to_le32(mclk_freq);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_set_config);
int gb_audio_apbridgea_register_cport(struct gb_connection *connection,
__u16 i2s_port, __u16 cportid,
__u8 direction)
{
struct audio_apbridgea_register_cport_request req;
int ret;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_REGISTER_CPORT;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
req.cport = cpu_to_le16(cportid);
req.direction = direction;
ret = gb_pm_runtime_get_sync(connection->bundle);
if (ret)
return ret;
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_register_cport);
int gb_audio_apbridgea_unregister_cport(struct gb_connection *connection,
__u16 i2s_port, __u16 cportid,
__u8 direction)
{
struct audio_apbridgea_unregister_cport_request req;
int ret;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_UNREGISTER_CPORT;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
req.cport = cpu_to_le16(cportid);
req.direction = direction;
ret = gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
gb_pm_runtime_put_autosuspend(connection->bundle);
return ret;
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_unregister_cport);
int gb_audio_apbridgea_set_tx_data_size(struct gb_connection *connection,
__u16 i2s_port, __u16 size)
{
struct audio_apbridgea_set_tx_data_size_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_TX_DATA_SIZE;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
req.size = cpu_to_le16(size);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_set_tx_data_size);
int gb_audio_apbridgea_prepare_tx(struct gb_connection *connection,
__u16 i2s_port)
{
struct audio_apbridgea_prepare_tx_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_PREPARE_TX;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_prepare_tx);
int gb_audio_apbridgea_start_tx(struct gb_connection *connection,
__u16 i2s_port, __u64 timestamp)
{
struct audio_apbridgea_start_tx_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_START_TX;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
req.timestamp = cpu_to_le64(timestamp);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_start_tx);
int gb_audio_apbridgea_stop_tx(struct gb_connection *connection, __u16 i2s_port)
{
struct audio_apbridgea_stop_tx_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_STOP_TX;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_stop_tx);
int gb_audio_apbridgea_shutdown_tx(struct gb_connection *connection,
__u16 i2s_port)
{
struct audio_apbridgea_shutdown_tx_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_SHUTDOWN_TX;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_shutdown_tx);
int gb_audio_apbridgea_set_rx_data_size(struct gb_connection *connection,
__u16 i2s_port, __u16 size)
{
struct audio_apbridgea_set_rx_data_size_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_RX_DATA_SIZE;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
req.size = cpu_to_le16(size);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_set_rx_data_size);
int gb_audio_apbridgea_prepare_rx(struct gb_connection *connection,
__u16 i2s_port)
{
struct audio_apbridgea_prepare_rx_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_PREPARE_RX;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_prepare_rx);
int gb_audio_apbridgea_start_rx(struct gb_connection *connection,
__u16 i2s_port)
{
struct audio_apbridgea_start_rx_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_START_RX;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_start_rx);
int gb_audio_apbridgea_stop_rx(struct gb_connection *connection, __u16 i2s_port)
{
struct audio_apbridgea_stop_rx_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_STOP_RX;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_stop_rx);
int gb_audio_apbridgea_shutdown_rx(struct gb_connection *connection,
__u16 i2s_port)
{
struct audio_apbridgea_shutdown_rx_request req;
req.hdr.type = AUDIO_APBRIDGEA_TYPE_SHUTDOWN_RX;
req.hdr.i2s_port = cpu_to_le16(i2s_port);
return gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_shutdown_rx);
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("greybus:audio-apbridgea");
MODULE_DESCRIPTION("Greybus Special APBridgeA Audio Protocol library");
MODULE_AUTHOR("Mark Greer <mgreer@animalcreek.com>");
|
