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// 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 "operation.h"
#include "audio_codec.h"
/* TODO: Split into separate calls */
int gb_audio_gb_get_topology(struct gb_connection *connection,
struct gb_audio_topology **topology)
{
struct gb_audio_get_topology_size_response size_resp;
struct gb_audio_topology *topo;
u16 size;
int ret;
ret = gb_operation_sync(connection, GB_AUDIO_TYPE_GET_TOPOLOGY_SIZE,
NULL, 0, &size_resp, sizeof(size_resp));
if (ret)
return ret;
size = le16_to_cpu(size_resp.size);
if (size < sizeof(*topo))
return -ENODATA;
topo = kzalloc(size, GFP_KERNEL);
if (!topo)
return -ENOMEM;
ret = gb_operation_sync(connection, GB_AUDIO_TYPE_GET_TOPOLOGY, NULL, 0,
topo, size);
if (ret) {
kfree(topo);
return ret;
}
*topology = topo;
return 0;
}
EXPORT_SYMBOL_GPL(gb_audio_gb_get_topology);
int gb_audio_gb_get_control(struct gb_connection *connection,
u8 control_id, u8 index,
struct gb_audio_ctl_elem_value *value)
{
struct gb_audio_get_control_request req;
struct gb_audio_get_control_response resp;
int ret;
req.control_id = control_id;
req.index = index;
ret = gb_operation_sync(connection, GB_AUDIO_TYPE_GET_CONTROL,
&req, sizeof(req), &resp, sizeof(resp));
if (ret)
return ret;
memcpy(value, &resp.value, sizeof(*value));
return 0;
}
EXPORT_SYMBOL_GPL(gb_audio_gb_get_control);
int gb_audio_gb_set_control(struct gb_connection *connection,
u8 control_id, u8 index,
struct gb_audio_ctl_elem_value *value)
{
struct gb_audio_set_control_request req;
req.control_id = control_id;
req.index = index;
memcpy(&req.value, value, sizeof(req.value));
return gb_operation_sync(connection, GB_AUDIO_TYPE_SET_CONTROL,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_set_control);
int gb_audio_gb_enable_widget(struct gb_connection *connection,
u8 widget_id)
{
struct gb_audio_enable_widget_request req;
req.widget_id = widget_id;
return gb_operation_sync(connection, GB_AUDIO_TYPE_ENABLE_WIDGET,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_enable_widget);
int gb_audio_gb_disable_widget(struct gb_connection *connection,
u8 widget_id)
{
struct gb_audio_disable_widget_request req;
req.widget_id = widget_id;
return gb_operation_sync(connection, GB_AUDIO_TYPE_DISABLE_WIDGET,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_disable_widget);
int gb_audio_gb_get_pcm(struct gb_connection *connection, u16 data_cport,
u32 *format, u32 *rate, u8 *channels,
u8 *sig_bits)
{
struct gb_audio_get_pcm_request req;
struct gb_audio_get_pcm_response resp;
int ret;
req.data_cport = cpu_to_le16(data_cport);
ret = gb_operation_sync(connection, GB_AUDIO_TYPE_GET_PCM,
&req, sizeof(req), &resp, sizeof(resp));
if (ret)
return ret;
*format = le32_to_cpu(resp.format);
*rate = le32_to_cpu(resp.rate);
*channels = resp.channels;
*sig_bits = resp.sig_bits;
return 0;
}
EXPORT_SYMBOL_GPL(gb_audio_gb_get_pcm);
int gb_audio_gb_set_pcm(struct gb_connection *connection, u16 data_cport,
u32 format, u32 rate, u8 channels,
u8 sig_bits)
{
struct gb_audio_set_pcm_request req;
req.data_cport = cpu_to_le16(data_cport);
req.format = cpu_to_le32(format);
req.rate = cpu_to_le32(rate);
req.channels = channels;
req.sig_bits = sig_bits;
return gb_operation_sync(connection, GB_AUDIO_TYPE_SET_PCM,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_set_pcm);
int gb_audio_gb_set_tx_data_size(struct gb_connection *connection,
u16 data_cport, u16 size)
{
struct gb_audio_set_tx_data_size_request req;
req.data_cport = cpu_to_le16(data_cport);
req.size = cpu_to_le16(size);
return gb_operation_sync(connection, GB_AUDIO_TYPE_SET_TX_DATA_SIZE,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_set_tx_data_size);
int gb_audio_gb_activate_tx(struct gb_connection *connection,
u16 data_cport)
{
struct gb_audio_activate_tx_request req;
req.data_cport = cpu_to_le16(data_cport);
return gb_operation_sync(connection, GB_AUDIO_TYPE_ACTIVATE_TX,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_activate_tx);
int gb_audio_gb_deactivate_tx(struct gb_connection *connection,
u16 data_cport)
{
struct gb_audio_deactivate_tx_request req;
req.data_cport = cpu_to_le16(data_cport);
return gb_operation_sync(connection, GB_AUDIO_TYPE_DEACTIVATE_TX,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_deactivate_tx);
int gb_audio_gb_set_rx_data_size(struct gb_connection *connection,
u16 data_cport, u16 size)
{
struct gb_audio_set_rx_data_size_request req;
req.data_cport = cpu_to_le16(data_cport);
req.size = cpu_to_le16(size);
return gb_operation_sync(connection, GB_AUDIO_TYPE_SET_RX_DATA_SIZE,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_set_rx_data_size);
int gb_audio_gb_activate_rx(struct gb_connection *connection,
u16 data_cport)
{
struct gb_audio_activate_rx_request req;
req.data_cport = cpu_to_le16(data_cport);
return gb_operation_sync(connection, GB_AUDIO_TYPE_ACTIVATE_RX,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_activate_rx);
int gb_audio_gb_deactivate_rx(struct gb_connection *connection,
u16 data_cport)
{
struct gb_audio_deactivate_rx_request req;
req.data_cport = cpu_to_le16(data_cport);
return gb_operation_sync(connection, GB_AUDIO_TYPE_DEACTIVATE_RX,
&req, sizeof(req), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_audio_gb_deactivate_rx);
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("greybus:audio-gb");
MODULE_DESCRIPTION("Greybus Audio Device Class Protocol library");
MODULE_AUTHOR("Mark Greer <mgreer@animalcreek.com>");
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