// SPDX-License-Identifier: GPL-2.0
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/*
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* Greybus Audio Device Class Protocol helpers
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*
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* Copyright 2015-2016 Google Inc.
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*/
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#include <linux/greybus.h>
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#include "audio_apbridgea.h"
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#include "audio_codec.h"
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int gb_audio_apbridgea_set_config(struct gb_connection *connection,
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__u16 i2s_port, __u32 format, __u32 rate,
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__u32 mclk_freq)
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{
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struct audio_apbridgea_set_config_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_CONFIG;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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req.format = cpu_to_le32(format);
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req.rate = cpu_to_le32(rate);
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req.mclk_freq = cpu_to_le32(mclk_freq);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_set_config);
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int gb_audio_apbridgea_register_cport(struct gb_connection *connection,
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__u16 i2s_port, __u16 cportid,
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__u8 direction)
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{
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struct audio_apbridgea_register_cport_request req;
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int ret;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_REGISTER_CPORT;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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req.cport = cpu_to_le16(cportid);
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req.direction = direction;
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ret = gb_pm_runtime_get_sync(connection->bundle);
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if (ret)
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return ret;
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_register_cport);
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int gb_audio_apbridgea_unregister_cport(struct gb_connection *connection,
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__u16 i2s_port, __u16 cportid,
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__u8 direction)
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{
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struct audio_apbridgea_unregister_cport_request req;
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int ret;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_UNREGISTER_CPORT;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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req.cport = cpu_to_le16(cportid);
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req.direction = direction;
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ret = gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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gb_pm_runtime_put_autosuspend(connection->bundle);
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return ret;
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_unregister_cport);
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int gb_audio_apbridgea_set_tx_data_size(struct gb_connection *connection,
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__u16 i2s_port, __u16 size)
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{
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struct audio_apbridgea_set_tx_data_size_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_TX_DATA_SIZE;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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req.size = cpu_to_le16(size);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_set_tx_data_size);
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int gb_audio_apbridgea_prepare_tx(struct gb_connection *connection,
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__u16 i2s_port)
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{
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struct audio_apbridgea_prepare_tx_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_PREPARE_TX;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_prepare_tx);
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int gb_audio_apbridgea_start_tx(struct gb_connection *connection,
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__u16 i2s_port, __u64 timestamp)
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{
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struct audio_apbridgea_start_tx_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_START_TX;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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req.timestamp = cpu_to_le64(timestamp);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_start_tx);
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int gb_audio_apbridgea_stop_tx(struct gb_connection *connection, __u16 i2s_port)
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{
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struct audio_apbridgea_stop_tx_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_STOP_TX;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_stop_tx);
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int gb_audio_apbridgea_shutdown_tx(struct gb_connection *connection,
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__u16 i2s_port)
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{
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struct audio_apbridgea_shutdown_tx_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_SHUTDOWN_TX;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_shutdown_tx);
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int gb_audio_apbridgea_set_rx_data_size(struct gb_connection *connection,
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__u16 i2s_port, __u16 size)
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{
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struct audio_apbridgea_set_rx_data_size_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_RX_DATA_SIZE;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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req.size = cpu_to_le16(size);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_set_rx_data_size);
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int gb_audio_apbridgea_prepare_rx(struct gb_connection *connection,
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__u16 i2s_port)
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{
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struct audio_apbridgea_prepare_rx_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_PREPARE_RX;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_prepare_rx);
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int gb_audio_apbridgea_start_rx(struct gb_connection *connection,
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__u16 i2s_port)
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{
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struct audio_apbridgea_start_rx_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_START_RX;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_start_rx);
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int gb_audio_apbridgea_stop_rx(struct gb_connection *connection, __u16 i2s_port)
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{
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struct audio_apbridgea_stop_rx_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_STOP_RX;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_stop_rx);
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int gb_audio_apbridgea_shutdown_rx(struct gb_connection *connection,
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__u16 i2s_port)
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{
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struct audio_apbridgea_shutdown_rx_request req;
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req.hdr.type = AUDIO_APBRIDGEA_TYPE_SHUTDOWN_RX;
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req.hdr.i2s_port = cpu_to_le16(i2s_port);
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return gb_hd_output(connection->hd, &req, sizeof(req),
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GB_APB_REQUEST_AUDIO_CONTROL, true);
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}
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EXPORT_SYMBOL_GPL(gb_audio_apbridgea_shutdown_rx);
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("greybus:audio-apbridgea");
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MODULE_DESCRIPTION("Greybus Special APBridgeA Audio Protocol library");
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MODULE_AUTHOR("Mark Greer <mgreer@animalcreek.com>");
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