2 * Greybus Audio Device Class Protocol helpers
4 * Copyright 2015-2016 Google Inc.
6 * Released under the GPLv2 only.
10 #include "greybus_protocols.h"
11 #include "audio_apbridgea.h"
12 #include "audio_codec.h"
14 int gb_audio_apbridgea_set_config(struct gb_connection *connection,
15 __u16 i2s_port, __u32 format, __u32 rate,
18 struct audio_apbridgea_set_config_request req;
20 req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_CONFIG;
21 req.hdr.i2s_port = cpu_to_le16(i2s_port);
22 req.format = cpu_to_le32(format);
23 req.rate = cpu_to_le32(rate);
24 req.mclk_freq = cpu_to_le32(mclk_freq);
26 return gb_hd_output(connection->hd, &req, sizeof(req),
27 GB_APB_REQUEST_AUDIO_CONTROL, true);
29 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_set_config);
31 int gb_audio_apbridgea_register_cport(struct gb_connection *connection,
32 __u16 i2s_port, __u16 cportid,
35 struct audio_apbridgea_register_cport_request req;
38 req.hdr.type = AUDIO_APBRIDGEA_TYPE_REGISTER_CPORT;
39 req.hdr.i2s_port = cpu_to_le16(i2s_port);
40 req.cport = cpu_to_le16(cportid);
41 req.direction = direction;
43 ret = gb_pm_runtime_get_sync(connection->bundle);
47 return gb_hd_output(connection->hd, &req, sizeof(req),
48 GB_APB_REQUEST_AUDIO_CONTROL, true);
50 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_register_cport);
52 int gb_audio_apbridgea_unregister_cport(struct gb_connection *connection,
53 __u16 i2s_port, __u16 cportid,
56 struct audio_apbridgea_unregister_cport_request req;
59 req.hdr.type = AUDIO_APBRIDGEA_TYPE_UNREGISTER_CPORT;
60 req.hdr.i2s_port = cpu_to_le16(i2s_port);
61 req.cport = cpu_to_le16(cportid);
62 req.direction = direction;
64 ret = gb_hd_output(connection->hd, &req, sizeof(req),
65 GB_APB_REQUEST_AUDIO_CONTROL, true);
67 gb_pm_runtime_put_autosuspend(connection->bundle);
71 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_unregister_cport);
73 int gb_audio_apbridgea_set_tx_data_size(struct gb_connection *connection,
74 __u16 i2s_port, __u16 size)
76 struct audio_apbridgea_set_tx_data_size_request req;
78 req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_TX_DATA_SIZE;
79 req.hdr.i2s_port = cpu_to_le16(i2s_port);
80 req.size = cpu_to_le16(size);
82 return gb_hd_output(connection->hd, &req, sizeof(req),
83 GB_APB_REQUEST_AUDIO_CONTROL, true);
85 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_set_tx_data_size);
87 int gb_audio_apbridgea_prepare_tx(struct gb_connection *connection,
90 struct audio_apbridgea_prepare_tx_request req;
92 req.hdr.type = AUDIO_APBRIDGEA_TYPE_PREPARE_TX;
93 req.hdr.i2s_port = cpu_to_le16(i2s_port);
95 return gb_hd_output(connection->hd, &req, sizeof(req),
96 GB_APB_REQUEST_AUDIO_CONTROL, true);
98 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_prepare_tx);
100 int gb_audio_apbridgea_start_tx(struct gb_connection *connection,
101 __u16 i2s_port, __u64 timestamp)
103 struct audio_apbridgea_start_tx_request req;
105 req.hdr.type = AUDIO_APBRIDGEA_TYPE_START_TX;
106 req.hdr.i2s_port = cpu_to_le16(i2s_port);
107 req.timestamp = cpu_to_le64(timestamp);
109 return gb_hd_output(connection->hd, &req, sizeof(req),
110 GB_APB_REQUEST_AUDIO_CONTROL, true);
112 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_start_tx);
114 int gb_audio_apbridgea_stop_tx(struct gb_connection *connection, __u16 i2s_port)
116 struct audio_apbridgea_stop_tx_request req;
118 req.hdr.type = AUDIO_APBRIDGEA_TYPE_STOP_TX;
119 req.hdr.i2s_port = cpu_to_le16(i2s_port);
121 return gb_hd_output(connection->hd, &req, sizeof(req),
122 GB_APB_REQUEST_AUDIO_CONTROL, true);
124 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_stop_tx);
126 int gb_audio_apbridgea_shutdown_tx(struct gb_connection *connection,
129 struct audio_apbridgea_shutdown_tx_request req;
131 req.hdr.type = AUDIO_APBRIDGEA_TYPE_SHUTDOWN_TX;
132 req.hdr.i2s_port = cpu_to_le16(i2s_port);
134 return gb_hd_output(connection->hd, &req, sizeof(req),
135 GB_APB_REQUEST_AUDIO_CONTROL, true);
137 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_shutdown_tx);
139 int gb_audio_apbridgea_set_rx_data_size(struct gb_connection *connection,
140 __u16 i2s_port, __u16 size)
142 struct audio_apbridgea_set_rx_data_size_request req;
144 req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_RX_DATA_SIZE;
145 req.hdr.i2s_port = cpu_to_le16(i2s_port);
146 req.size = cpu_to_le16(size);
148 return gb_hd_output(connection->hd, &req, sizeof(req),
149 GB_APB_REQUEST_AUDIO_CONTROL, true);
151 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_set_rx_data_size);
153 int gb_audio_apbridgea_prepare_rx(struct gb_connection *connection,
156 struct audio_apbridgea_prepare_rx_request req;
158 req.hdr.type = AUDIO_APBRIDGEA_TYPE_PREPARE_RX;
159 req.hdr.i2s_port = cpu_to_le16(i2s_port);
161 return gb_hd_output(connection->hd, &req, sizeof(req),
162 GB_APB_REQUEST_AUDIO_CONTROL, true);
164 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_prepare_rx);
166 int gb_audio_apbridgea_start_rx(struct gb_connection *connection,
169 struct audio_apbridgea_start_rx_request req;
171 req.hdr.type = AUDIO_APBRIDGEA_TYPE_START_RX;
172 req.hdr.i2s_port = cpu_to_le16(i2s_port);
174 return gb_hd_output(connection->hd, &req, sizeof(req),
175 GB_APB_REQUEST_AUDIO_CONTROL, true);
177 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_start_rx);
179 int gb_audio_apbridgea_stop_rx(struct gb_connection *connection, __u16 i2s_port)
181 struct audio_apbridgea_stop_rx_request req;
183 req.hdr.type = AUDIO_APBRIDGEA_TYPE_STOP_RX;
184 req.hdr.i2s_port = cpu_to_le16(i2s_port);
186 return gb_hd_output(connection->hd, &req, sizeof(req),
187 GB_APB_REQUEST_AUDIO_CONTROL, true);
189 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_stop_rx);
191 int gb_audio_apbridgea_shutdown_rx(struct gb_connection *connection,
194 struct audio_apbridgea_shutdown_rx_request req;
196 req.hdr.type = AUDIO_APBRIDGEA_TYPE_SHUTDOWN_RX;
197 req.hdr.i2s_port = cpu_to_le16(i2s_port);
199 return gb_hd_output(connection->hd, &req, sizeof(req),
200 GB_APB_REQUEST_AUDIO_CONTROL, true);
202 EXPORT_SYMBOL_GPL(gb_audio_apbridgea_shutdown_rx);
204 MODULE_LICENSE("GPL v2");
205 MODULE_ALIAS("greybus:audio-apbridgea");
206 MODULE_DESCRIPTION("Greybus Special APBridgeA Audio Protocol library");
207 MODULE_AUTHOR("Mark Greer <mgreer@animalcreek.com>");