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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/staging/greybus/audio_apbridgea.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/staging/greybus/audio_apbridgea.c')
-rw-r--r-- | drivers/staging/greybus/audio_apbridgea.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/drivers/staging/greybus/audio_apbridgea.c b/drivers/staging/greybus/audio_apbridgea.c new file mode 100644 index 000000000..26117e390 --- /dev/null +++ b/drivers/staging/greybus/audio_apbridgea.c @@ -0,0 +1,205 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Greybus Audio Device Class Protocol helpers + * + * Copyright 2015-2016 Google Inc. + */ + +#include <linux/greybus.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>"); |