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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) 2021 Advanced Micro Devices, Inc.
//
// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
/*
* PCM interface for generic AMD audio ACP DSP block
*/
#include <sound/pcm_params.h>
#include "../ops.h"
#include "acp.h"
#include "acp-dsp-offset.h"
int acp_pcm_hw_params(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_sof_platform_stream_params *platform_params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct acp_dsp_stream *stream = runtime->private_data;
unsigned int buf_offset, index;
u32 size;
int ret;
size = runtime->dma_bytes;
stream->num_pages = PFN_UP(runtime->dma_bytes);
stream->dmab = substream->runtime->dma_buffer_p;
ret = acp_dsp_stream_config(sdev, stream);
if (ret < 0) {
dev_err(sdev->dev, "stream configuration failed\n");
return ret;
}
platform_params->use_phy_address = true;
platform_params->phy_addr = stream->reg_offset;
platform_params->stream_tag = stream->stream_tag;
platform_params->cont_update_posn = 1;
/* 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;
}
EXPORT_SYMBOL_NS(acp_pcm_hw_params, SND_SOC_SOF_AMD_COMMON);
int acp_pcm_open(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)
{
struct acp_dsp_stream *stream;
stream = acp_dsp_stream_get(sdev, 0);
if (!stream)
return -ENODEV;
substream->runtime->private_data = stream;
stream->substream = substream;
return 0;
}
EXPORT_SYMBOL_NS(acp_pcm_open, SND_SOC_SOF_AMD_COMMON);
int acp_pcm_close(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)
{
struct acp_dsp_stream *stream;
stream = substream->runtime->private_data;
if (!stream) {
dev_err(sdev->dev, "No open stream\n");
return -EINVAL;
}
stream->substream = NULL;
substream->runtime->private_data = NULL;
return acp_dsp_stream_put(sdev, stream);
}
EXPORT_SYMBOL_NS(acp_pcm_close, SND_SOC_SOF_AMD_COMMON);
snd_pcm_uframes_t acp_pcm_pointer(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_component *scomp = sdev->component;
struct snd_sof_pcm_stream *stream;
struct sof_ipc_stream_posn posn;
struct snd_sof_pcm *spcm;
snd_pcm_uframes_t pos;
int ret;
spcm = snd_sof_find_spcm_dai(scomp, rtd);
if (!spcm) {
dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
rtd->dai_link->id);
return 0;
}
stream = &spcm->stream[substream->stream];
ret = snd_sof_ipc_msg_data(sdev, stream, &posn, sizeof(posn));
if (ret < 0) {
dev_warn(sdev->dev, "failed to read stream position: %d\n", ret);
return 0;
}
memcpy(&stream->posn, &posn, sizeof(posn));
pos = spcm->stream[substream->stream].posn.host_posn;
pos = bytes_to_frames(substream->runtime, pos);
return pos;
}
EXPORT_SYMBOL_NS(acp_pcm_pointer, SND_SOC_SOF_AMD_COMMON);
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