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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 /sound/soc/sof/amd/acp-pcm.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 'sound/soc/sof/amd/acp-pcm.c')
-rw-r--r-- | sound/soc/sof/amd/acp-pcm.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/sound/soc/sof/amd/acp-pcm.c b/sound/soc/sof/amd/acp-pcm.c new file mode 100644 index 000000000..727c3a784 --- /dev/null +++ b/sound/soc/sof/amd/acp-pcm.c @@ -0,0 +1,86 @@ +// 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; + + /* 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); |