From: Rander Wang rander.wang@intel.com
Use the hw_params to init time info for ipc4 delay calculation.
Signed-off-by: Rander Wang rander.wang@intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Reviewed-by: Bard Liao yung-chuan.liao@linux.intel.com Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com --- sound/soc/sof/ipc4-pcm.c | 98 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+)
diff --git a/sound/soc/sof/ipc4-pcm.c b/sound/soc/sof/ipc4-pcm.c index 8071db487815..a457d4d479d8 100644 --- a/sound/soc/sof/ipc4-pcm.c +++ b/sound/soc/sof/ipc4-pcm.c @@ -459,7 +459,105 @@ static int sof_ipc4_pcm_setup(struct snd_sof_dev *sdev, struct snd_sof_pcm *spcm return 0; }
+static void sof_ipc4_build_time_info(struct snd_sof_dev *sdev, struct snd_sof_pcm_stream *spcm) +{ + struct sof_ipc4_copier *host_copier = NULL; + struct sof_ipc4_copier *dai_copier = NULL; + struct sof_ipc4_llp_reading_slot llp_slot; + struct sof_ipc4_timestamp_info *info; + struct snd_soc_dapm_widget *widget; + struct snd_sof_dai *dai; + int i; + + /* find host & dai to locate info in memory window */ + for_each_dapm_widgets(spcm->list, i, widget) { + struct snd_sof_widget *swidget = widget->dobj.private; + + if (!swidget) + continue; + + if (WIDGET_IS_AIF(swidget->widget->id)) { + host_copier = swidget->private; + } else if (WIDGET_IS_DAI(swidget->widget->id)) { + dai = swidget->private; + dai_copier = dai->private; + } + } + + /* both host and dai copier must be valid for time_info */ + if (!host_copier || !dai_copier) { + dev_err(sdev->dev, "host or dai copier are not found\n"); + return; + } + + info = spcm->private; + info->host_copier = host_copier; + info->dai_copier = dai_copier; + info->llp_offset = offsetof(struct sof_ipc4_fw_registers, llp_gpdma_reading_slots) + + sdev->fw_info_box.offset; + + /* find llp slot used by current dai */ + for (i = 0; i < SOF_IPC4_MAX_LLP_GPDMA_READING_SLOTS; i++) { + sof_mailbox_read(sdev, info->llp_offset, &llp_slot, sizeof(llp_slot)); + if (llp_slot.node_id == dai_copier->data.gtw_cfg.node_id) + break; + + info->llp_offset += sizeof(llp_slot); + } + + if (i < SOF_IPC4_MAX_LLP_GPDMA_READING_SLOTS) + return; + + /* if no llp gpdma slot is used, check aggregated sdw slot */ + info->llp_offset = offsetof(struct sof_ipc4_fw_registers, llp_sndw_reading_slots) + + sdev->fw_info_box.offset; + for (i = 0; i < SOF_IPC4_MAX_LLP_SNDW_READING_SLOTS; i++) { + sof_mailbox_read(sdev, info->llp_offset, &llp_slot, sizeof(llp_slot)); + if (llp_slot.node_id == dai_copier->data.gtw_cfg.node_id) + break; + + info->llp_offset += sizeof(llp_slot); + } + + if (i < SOF_IPC4_MAX_LLP_SNDW_READING_SLOTS) + return; + + /* check EVAD slot */ + info->llp_offset = offsetof(struct sof_ipc4_fw_registers, llp_evad_reading_slot) + + sdev->fw_info_box.offset; + sof_mailbox_read(sdev, info->llp_offset, &llp_slot, sizeof(llp_slot)); + if (llp_slot.node_id != dai_copier->data.gtw_cfg.node_id) { + dev_info(sdev->dev, "no llp found, fall back to default HDA path"); + info->llp_offset = 0; + } +} + +static int sof_ipc4_pcm_hw_params(struct snd_soc_component *component, + struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_sof_platform_stream_params *platform_params) +{ + struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct sof_ipc4_timestamp_info *time_info; + struct snd_sof_pcm *spcm; + + spcm = snd_sof_find_spcm_dai(component, rtd); + time_info = spcm->stream[substream->stream].private; + /* delay calculation is not supported by current fw_reg ABI */ + if (!time_info) + return 0; + + time_info->stream_start_offset = SOF_IPC4_INVALID_STREAM_POSITION; + time_info->llp_offset = 0; + + sof_ipc4_build_time_info(sdev, &spcm->stream[substream->stream]); + + return 0; +} + const struct sof_ipc_pcm_ops ipc4_pcm_ops = { + .hw_params = sof_ipc4_pcm_hw_params, .trigger = sof_ipc4_pcm_trigger, .hw_free = sof_ipc4_pcm_hw_free, .dai_link_fixup = sof_ipc4_pcm_dai_link_fixup,