87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2021 Advanced Micro Devices, Inc.
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//
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// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
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/*
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* PCM interface for generic AMD audio ACP DSP block
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*/
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#include <sound/pcm_params.h>
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#include "../ops.h"
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#include "acp.h"
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#include "acp-dsp-offset.h"
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int acp_pcm_hw_params(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_sof_platform_stream_params *platform_params)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct acp_dsp_stream *stream = runtime->private_data;
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unsigned int buf_offset, index;
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u32 size;
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int ret;
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size = runtime->dma_bytes;
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stream->num_pages = PFN_UP(runtime->dma_bytes);
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stream->dmab = substream->runtime->dma_buffer_p;
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ret = acp_dsp_stream_config(sdev, stream);
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if (ret < 0) {
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dev_err(sdev->dev, "stream configuration failed\n");
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return ret;
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}
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platform_params->use_phy_address = true;
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platform_params->phy_addr = stream->reg_offset;
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platform_params->stream_tag = stream->stream_tag;
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/* write buffer size of stream in scratch memory */
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buf_offset = sdev->debug_box.offset +
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offsetof(struct scratch_reg_conf, buf_size);
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index = stream->stream_tag - 1;
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buf_offset = buf_offset + index * 4;
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snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + buf_offset, size);
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return 0;
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}
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EXPORT_SYMBOL_NS(acp_pcm_hw_params, SND_SOC_SOF_AMD_COMMON);
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int acp_pcm_open(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)
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{
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struct acp_dsp_stream *stream;
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stream = acp_dsp_stream_get(sdev, 0);
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if (!stream)
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return -ENODEV;
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substream->runtime->private_data = stream;
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stream->substream = substream;
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return 0;
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}
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EXPORT_SYMBOL_NS(acp_pcm_open, SND_SOC_SOF_AMD_COMMON);
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int acp_pcm_close(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)
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{
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struct acp_dsp_stream *stream;
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stream = substream->runtime->private_data;
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if (!stream) {
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dev_err(sdev->dev, "No open stream\n");
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return -EINVAL;
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}
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stream->substream = NULL;
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substream->runtime->private_data = NULL;
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return acp_dsp_stream_put(sdev, stream);
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}
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EXPORT_SYMBOL_NS(acp_pcm_close, SND_SOC_SOF_AMD_COMMON);
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