diff options
Diffstat (limited to 'sound/soc/sof/amd/acp-probes.c')
| -rw-r--r-- | sound/soc/sof/amd/acp-probes.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/sound/soc/sof/amd/acp-probes.c b/sound/soc/sof/amd/acp-probes.c new file mode 100644 index 000000000000..778cf1a8b610 --- /dev/null +++ b/sound/soc/sof/amd/acp-probes.c @@ -0,0 +1,147 @@ +// 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); + |