ASoC: SOF: Intel: hda-dai: add DMIC support

We can reuse the same helpers as for SSP, with just the link type
being different.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Jaska Uimonen <jaska.uimonen@linux.intel.com>
Link: https://lore.kernel.org/r/20230807210959.506849-12-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/intel/hda-dai-ops.c

@@ -237,6 +237,36 @@ static unsigned int generic_calc_stream_format(struct snd_sof_dev *sdev,
 	return format_val;
 }
 
+static unsigned int dmic_calc_stream_format(struct snd_sof_dev *sdev,
+					    struct snd_pcm_substream *substream,
+					    struct snd_pcm_hw_params *params)
+{
+	unsigned int format_val;
+	snd_pcm_format_t format;
+	unsigned int channels;
+	unsigned int width;
+
+	channels = params_channels(params);
+	format = params_format(params);
+	width = params_physical_width(params);
+
+	if (format == SNDRV_PCM_FORMAT_S16_LE) {
+		format = SNDRV_PCM_FORMAT_S32_LE;
+		channels /= 2;
+		width = 32;
+	}
+
+	format_val = snd_hdac_calc_stream_format(params_rate(params), channels,
+						 format,
+						 width,
+						 0);
+
+	dev_dbg(sdev->dev, "format_val=%#x, rate=%d, ch=%d, format=%d\n", format_val,
+		params_rate(params), channels, format);
+
+	return format_val;
+}
+
 static struct hdac_ext_link *ssp_get_hlink(struct snd_sof_dev *sdev,
 					   struct snd_pcm_substream *substream)
 {
@@ -245,6 +275,14 @@ static struct hdac_ext_link *ssp_get_hlink(struct snd_sof_dev *sdev,
 	return hdac_bus_eml_ssp_get_hlink(bus);
 }
 
+static struct hdac_ext_link *dmic_get_hlink(struct snd_sof_dev *sdev,
+					    struct snd_pcm_substream *substream)
+{
+	struct hdac_bus *bus = sof_to_bus(sdev);
+
+	return hdac_bus_eml_dmic_get_hlink(bus);
+}
+
 static int hda_ipc4_pre_trigger(struct snd_sof_dev *sdev, struct snd_soc_dai *cpu_dai,
 				struct snd_pcm_substream *substream, int cmd)
 {
@@ -402,6 +440,19 @@ static const struct hda_dai_widget_dma_ops ssp_ipc4_dma_ops = {
 	.get_hlink = ssp_get_hlink,
 };
 
+static const struct hda_dai_widget_dma_ops dmic_ipc4_dma_ops = {
+	.get_hext_stream = hda_ipc4_get_hext_stream,
+	.assign_hext_stream = hda_assign_hext_stream,
+	.release_hext_stream = hda_release_hext_stream,
+	.setup_hext_stream = hda_setup_hext_stream,
+	.reset_hext_stream = hda_reset_hext_stream,
+	.pre_trigger = hda_ipc4_pre_trigger,
+	.trigger = hda_trigger,
+	.post_trigger = hda_ipc4_post_trigger,
+	.calc_stream_format = dmic_calc_stream_format,
+	.get_hlink = dmic_get_hlink,
+};
+
 static const struct hda_dai_widget_dma_ops hda_ipc4_chain_dma_ops = {
 	.get_hext_stream = hda_get_hext_stream,
 	.assign_hext_stream = hda_assign_hext_stream,
@@ -523,6 +574,10 @@ hda_select_dai_widget_ops(struct snd_sof_dev *sdev, struct snd_sof_widget *swidg
 			if (chip->hw_ip_version < SOF_INTEL_ACE_2_0)
 				return NULL;
 			return &ssp_ipc4_dma_ops;
+		case SOF_DAI_INTEL_DMIC:
+			if (chip->hw_ip_version < SOF_INTEL_ACE_2_0)
+				return NULL;
+			return &dmic_ipc4_dma_ops;
 		default:
 			break;
 		}

sound/soc/sof/intel/hda-dai.c

@@ -422,6 +422,13 @@ static const struct snd_soc_dai_ops ssp_dai_ops = {
 	.prepare = non_hda_dai_prepare,
 };
 
+static const struct snd_soc_dai_ops dmic_dai_ops = {
+	.hw_params = non_hda_dai_hw_params,
+	.hw_free = hda_dai_hw_free,
+	.trigger = hda_dai_trigger,
+	.prepare = non_hda_dai_prepare,
+};
+
 static int hda_dai_suspend(struct hdac_bus *bus)
 {
 	struct snd_soc_pcm_runtime *rtd;
@@ -491,9 +498,25 @@ static void ssp_set_dai_drv_ops(struct snd_sof_dev *sdev, struct snd_sof_dsp_ops
 	}
 }
 
+static void dmic_set_dai_drv_ops(struct snd_sof_dev *sdev, struct snd_sof_dsp_ops *ops)
+{
+	const struct sof_intel_dsp_desc *chip;
+	int i;
+
+	chip = get_chip_info(sdev->pdata);
+
+	if (chip->hw_ip_version >= SOF_INTEL_ACE_2_0) {
+		for (i = 0; i < ops->num_drv; i++) {
+			if (strstr(ops->drv[i].name, "DMIC"))
+				ops->drv[i].ops = &dmic_dai_ops;
+		}
+	}
+}
+
 #else
 
 static inline void ssp_set_dai_drv_ops(struct snd_sof_dev *sdev, struct snd_sof_dsp_ops *ops) {}
+static inline void dmic_set_dai_drv_ops(struct snd_sof_dev *sdev, struct snd_sof_dsp_ops *ops) {}
 
 #endif /* CONFIG_SND_SOC_SOF_HDA_LINK */
 
@@ -511,6 +534,7 @@ void hda_set_dai_drv_ops(struct snd_sof_dev *sdev, struct snd_sof_dsp_ops *ops)
 	}
 
 	ssp_set_dai_drv_ops(sdev, ops);
+	dmic_set_dai_drv_ops(sdev, ops);
 
 	if (sdev->pdata->ipc_type == SOF_INTEL_IPC4 && !hda_use_tplg_nhlt) {
 		struct sof_ipc4_fw_data *ipc4_data = sdev->private;