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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)2//3// This file is provided under a dual BSD/GPLv2 license. When using or4// redistributing this file, you may do so under either license.5//6// Copyright(c) 2021 Advanced Micro Devices, Inc.7//8// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>9 10/*11 * PCM interface for generic AMD audio ACP DSP block12 */13#include <sound/pcm_params.h>14 15#include "../ops.h"16#include "acp.h"17#include "acp-dsp-offset.h"18 19int acp_pcm_hw_params(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream,20 struct snd_pcm_hw_params *params,21 struct snd_sof_platform_stream_params *platform_params)22{23 struct snd_pcm_runtime *runtime = substream->runtime;24 struct acp_dsp_stream *stream = runtime->private_data;25 unsigned int buf_offset, index;26 u32 size;27 int ret;28 29 size = runtime->dma_bytes;30 stream->num_pages = PFN_UP(runtime->dma_bytes);31 stream->dmab = substream->runtime->dma_buffer_p;32 33 ret = acp_dsp_stream_config(sdev, stream);34 if (ret < 0) {35 dev_err(sdev->dev, "stream configuration failed\n");36 return ret;37 }38 39 platform_params->use_phy_address = true;40 platform_params->phy_addr = stream->reg_offset;41 platform_params->stream_tag = stream->stream_tag;42 platform_params->cont_update_posn = 1;43 44 /* write buffer size of stream in scratch memory */45 46 buf_offset = sdev->debug_box.offset +47 offsetof(struct scratch_reg_conf, buf_size);48 index = stream->stream_tag - 1;49 buf_offset = buf_offset + index * 4;50 51 snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + buf_offset, size);52 53 return 0;54}55EXPORT_SYMBOL_NS(acp_pcm_hw_params, SND_SOC_SOF_AMD_COMMON);56 57int acp_pcm_open(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)58{59 struct acp_dsp_stream *stream;60 61 stream = acp_dsp_stream_get(sdev, 0);62 if (!stream)63 return -ENODEV;64 65 substream->runtime->private_data = stream;66 stream->substream = substream;67 68 return 0;69}70EXPORT_SYMBOL_NS(acp_pcm_open, SND_SOC_SOF_AMD_COMMON);71 72int acp_pcm_close(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)73{74 struct acp_dsp_stream *stream;75 76 stream = substream->runtime->private_data;77 if (!stream) {78 dev_err(sdev->dev, "No open stream\n");79 return -EINVAL;80 }81 82 stream->substream = NULL;83 substream->runtime->private_data = NULL;84 85 return acp_dsp_stream_put(sdev, stream);86}87EXPORT_SYMBOL_NS(acp_pcm_close, SND_SOC_SOF_AMD_COMMON);88 89snd_pcm_uframes_t acp_pcm_pointer(struct snd_sof_dev *sdev,90 struct snd_pcm_substream *substream)91{92 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);93 struct snd_soc_component *scomp = sdev->component;94 struct snd_sof_pcm_stream *stream;95 struct sof_ipc_stream_posn posn;96 struct snd_sof_pcm *spcm;97 snd_pcm_uframes_t pos;98 int ret;99 100 spcm = snd_sof_find_spcm_dai(scomp, rtd);101 if (!spcm) {102 dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",103 rtd->dai_link->id);104 return 0;105 }106 107 stream = &spcm->stream[substream->stream];108 ret = snd_sof_ipc_msg_data(sdev, stream, &posn, sizeof(posn));109 if (ret < 0) {110 dev_warn(sdev->dev, "failed to read stream position: %d\n", ret);111 return 0;112 }113 114 memcpy(&stream->posn, &posn, sizeof(posn));115 pos = spcm->stream[substream->stream].posn.host_posn;116 pos = bytes_to_frames(substream->runtime, pos);117 118 return pos;119}120EXPORT_SYMBOL_NS(acp_pcm_pointer, SND_SOC_SOF_AMD_COMMON);121