ASoC: SOF: Intel: hda-dai: add helpers for SoundWire callbacks

During the hw_params and hw_free stages, we need to map the stream tag
and channels in the PCMSyCM registers.

The trigger callback is just a wrapper.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Link: https://lore.kernel.org/r/20230807210959.506849-15-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sof/intel/hda-dai.c b/sound/soc/sof/intel/hda-dai.c
index 08de9b6..c984fa7 100644 (file)
--- a/sound/soc/sof/intel/hda-dai.c
+++ b/sound/soc/sof/intel/hda-dai.c
@@ -429,6 +429,78 @@ static const struct snd_soc_dai_ops dmic_dai_ops = {
        .prepare = non_hda_dai_prepare,
 };
 
+int sdw_hda_dai_hw_params(struct snd_pcm_substream *substream,
+                         struct snd_pcm_hw_params *params,
+                         struct snd_soc_dai *cpu_dai,
+                         int link_id)
+{
+       struct snd_soc_dapm_widget *w = snd_soc_dai_get_widget(cpu_dai, substream->stream);
+       const struct hda_dai_widget_dma_ops *ops;
+       struct hdac_ext_stream *hext_stream;
+       struct snd_sof_dev *sdev;
+       int ret;
+
+       ret = non_hda_dai_hw_params(substream, params, cpu_dai);
+       if (ret < 0) {
+               dev_err(cpu_dai->dev, "%s: non_hda_dai_hw_params failed %d\n", __func__, ret);
+               return ret;
+       }
+
+       ops = hda_dai_get_ops(substream, cpu_dai);
+       sdev = widget_to_sdev(w);
+       hext_stream = ops->get_hext_stream(sdev, cpu_dai, substream);
+
+       if (!hext_stream)
+               return -ENODEV;
+
+       /* in the case of SoundWire we need to program the PCMSyCM registers */
+       ret = hdac_bus_eml_sdw_map_stream_ch(sof_to_bus(sdev), link_id, cpu_dai->id,
+                                            GENMASK(params_channels(params) - 1, 0),
+                                            hdac_stream(hext_stream)->stream_tag,
+                                            substream->stream);
+       if (ret < 0) {
+               dev_err(cpu_dai->dev, "%s:  hdac_bus_eml_sdw_map_stream_ch failed %d\n",
+                       __func__, ret);
+               return ret;
+       }
+
+       return 0;
+}
+
+int sdw_hda_dai_hw_free(struct snd_pcm_substream *substream,
+                       struct snd_soc_dai *cpu_dai,
+                       int link_id)
+{
+       struct snd_soc_dapm_widget *w = snd_soc_dai_get_widget(cpu_dai, substream->stream);
+       struct snd_sof_dev *sdev;
+       int ret;
+
+       ret = hda_dai_hw_free(substream, cpu_dai);
+       if (ret < 0) {
+               dev_err(cpu_dai->dev, "%s: non_hda_dai_hw_free failed %d\n", __func__, ret);
+               return ret;
+       }
+
+       sdev = widget_to_sdev(w);
+
+       /* in the case of SoundWire we need to reset the PCMSyCM registers */
+       ret = hdac_bus_eml_sdw_map_stream_ch(sof_to_bus(sdev), link_id, cpu_dai->id,
+                                            0, 0, substream->stream);
+       if (ret < 0) {
+               dev_err(cpu_dai->dev, "%s:  hdac_bus_eml_sdw_map_stream_ch failed %d\n",
+                       __func__, ret);
+               return ret;
+       }
+
+       return 0;
+}
+
+int sdw_hda_dai_trigger(struct snd_pcm_substream *substream, int cmd,
+                       struct snd_soc_dai *cpu_dai)
+{
+       return hda_dai_trigger(substream, cmd, cpu_dai);
+}
+
 static int hda_dai_suspend(struct hdac_bus *bus)
 {
        struct snd_soc_pcm_runtime *rtd;

diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h
index 17164fc..4f60b72 100644 (file)
--- a/sound/soc/sof/intel/hda.h
+++ b/sound/soc/sof/intel/hda.h
@@ -824,6 +824,18 @@ static inline bool hda_common_check_sdw_irq(struct snd_sof_dev *sdev)
 
 #endif
 
+int sdw_hda_dai_hw_params(struct snd_pcm_substream *substream,
+                         struct snd_pcm_hw_params *params,
+                         struct snd_soc_dai *cpu_dai,
+                         int link_id);
+
+int sdw_hda_dai_hw_free(struct snd_pcm_substream *substream,
+                       struct snd_soc_dai *cpu_dai,
+                       int link_id);
+
+int sdw_hda_dai_trigger(struct snd_pcm_substream *substream, int cmd,
+                       struct snd_soc_dai *cpu_dai);
+
 /* common dai driver */
 extern struct snd_soc_dai_driver skl_dai[];
 int hda_dsp_dais_suspend(struct snd_sof_dev *sdev);