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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2023 Advanced Micro Devices, Inc.
//
// Authors: V Sujith Kumar Reddy <Vsujithkumar.Reddy@amd.com>
/*
* Probe interface for generic AMD audio ACP DSP block
*/
#include <linux/module.h>
#include <sound/soc.h>
#include "../sof-priv.h"
#include "../sof-client-probes.h"
#include "../sof-client.h"
#include "../ops.h"
#include "acp.h"
#include "acp-dsp-offset.h"
static int acp_probes_compr_startup(struct sof_client_dev *cdev,
struct snd_compr_stream *cstream,
struct snd_soc_dai *dai, u32 *stream_id)
{
struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
struct acp_dsp_stream *stream;
struct acp_dev_data *adata;
adata = sdev->pdata->hw_pdata;
stream = acp_dsp_stream_get(sdev, 0);
if (!stream)
return -ENODEV;
stream->cstream = cstream;
cstream->runtime->private_data = stream;
adata->probe_stream = stream;
*stream_id = stream->stream_tag;
return 0;
}
static int acp_probes_compr_shutdown(struct sof_client_dev *cdev,
struct snd_compr_stream *cstream,
struct snd_soc_dai *dai)
{
struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
struct acp_dsp_stream *stream = cstream->runtime->private_data;
struct acp_dev_data *adata;
int ret;
ret = acp_dsp_stream_put(sdev, stream);
if (ret < 0) {
dev_err(sdev->dev, "Failed to release probe compress stream\n");
return ret;
}
adata = sdev->pdata->hw_pdata;
stream->cstream = NULL;
cstream->runtime->private_data = NULL;
adata->probe_stream = NULL;
return 0;
}
static int acp_probes_compr_set_params(struct sof_client_dev *cdev,
struct snd_compr_stream *cstream,
struct snd_compr_params *params,
struct snd_soc_dai *dai)
{
struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
struct acp_dsp_stream *stream = cstream->runtime->private_data;
unsigned int buf_offset, index;
u32 size;
int ret;
stream->dmab = cstream->runtime->dma_buffer_p;
stream->num_pages = PFN_UP(cstream->runtime->dma_bytes);
size = cstream->runtime->buffer_size;
ret = acp_dsp_stream_config(sdev, stream);
if (ret < 0) {
acp_dsp_stream_put(sdev, stream);
return ret;
}
/* write buffer size of stream in scratch memory */
buf_offset = sdev->debug_box.offset +
offsetof(struct scratch_reg_conf, buf_size);
index = stream->stream_tag - 1;
buf_offset = buf_offset + index * 4;
snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + buf_offset, size);
return 0;
}
static int acp_probes_compr_trigger(struct sof_client_dev *cdev,
struct snd_compr_stream *cstream,
int cmd, struct snd_soc_dai *dai)
{
/* Nothing to do here, as it is a mandatory callback just defined */
return 0;
}
static int acp_probes_compr_pointer(struct sof_client_dev *cdev,
struct snd_compr_stream *cstream,
struct snd_compr_tstamp *tstamp,
struct snd_soc_dai *dai)
{
struct acp_dsp_stream *stream = cstream->runtime->private_data;
struct snd_soc_pcm_stream *pstream;
pstream = &dai->driver->capture;
tstamp->copied_total = stream->cstream_posn;
tstamp->sampling_rate = snd_pcm_rate_bit_to_rate(pstream->rates);
return 0;
}
/* SOF client implementation */
static const struct sof_probes_host_ops acp_probes_ops = {
.startup = acp_probes_compr_startup,
.shutdown = acp_probes_compr_shutdown,
.set_params = acp_probes_compr_set_params,
.trigger = acp_probes_compr_trigger,
.pointer = acp_probes_compr_pointer,
};
int acp_probes_register(struct snd_sof_dev *sdev)
{
return sof_client_dev_register(sdev, "acp-probes", 0, &acp_probes_ops,
sizeof(acp_probes_ops));
}
EXPORT_SYMBOL_NS(acp_probes_register, "SND_SOC_SOF_AMD_COMMON");
void acp_probes_unregister(struct snd_sof_dev *sdev)
{
sof_client_dev_unregister(sdev, "acp-probes", 0);
}
EXPORT_SYMBOL_NS(acp_probes_unregister, "SND_SOC_SOF_AMD_COMMON");
MODULE_IMPORT_NS("SND_SOC_SOF_CLIENT");
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