ASoC: SOF: ipc4-topology: Allow selective update in sof_ipc4_update_hw_params

Add a bitmask parameter to sof_ipc4_update_hw_params() to be able to select
the param to be updated.
This feature can be used when not all params should be updated, for example
if caller only wants to update the format in the params, leaving the
channels and rates untouched.
Reviewed-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20240503133253.108201-3-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/ipc4-topology.c

@@ -1119,42 +1119,50 @@ static int sof_ipc4_widget_assign_instance_id(struct snd_sof_dev *sdev,
 
 /* update hw_params based on the audio stream format */
 static int sof_ipc4_update_hw_params(struct snd_sof_dev *sdev, struct snd_pcm_hw_params *params,
-				     struct sof_ipc4_audio_format *fmt)
+				     struct sof_ipc4_audio_format *fmt, u32 param_to_update)
 {
-	snd_pcm_format_t snd_fmt;
 	struct snd_interval *i;
-	struct snd_mask *m;
-	int valid_bits = SOF_IPC4_AUDIO_FORMAT_CFG_V_BIT_DEPTH(fmt->fmt_cfg);
-	unsigned int channels, rate;
 
-	switch (valid_bits) {
-	case 16:
-		snd_fmt = SNDRV_PCM_FORMAT_S16_LE;
-		break;
-	case 24:
-		snd_fmt = SNDRV_PCM_FORMAT_S24_LE;
-		break;
-	case 32:
-		snd_fmt = SNDRV_PCM_FORMAT_S32_LE;
-		break;
-	default:
-		dev_err(sdev->dev, "invalid PCM valid_bits %d\n", valid_bits);
-		return -EINVAL;
+	if (param_to_update & BIT(SNDRV_PCM_HW_PARAM_FORMAT)) {
+		int valid_bits = SOF_IPC4_AUDIO_FORMAT_CFG_V_BIT_DEPTH(fmt->fmt_cfg);
+		snd_pcm_format_t snd_fmt;
+		struct snd_mask *m;
+
+		switch (valid_bits) {
+		case 16:
+			snd_fmt = SNDRV_PCM_FORMAT_S16_LE;
+			break;
+		case 24:
+			snd_fmt = SNDRV_PCM_FORMAT_S24_LE;
+			break;
+		case 32:
+			snd_fmt = SNDRV_PCM_FORMAT_S32_LE;
+			break;
+		default:
+			dev_err(sdev->dev, "invalid PCM valid_bits %d\n", valid_bits);
+			return -EINVAL;
+		}
+
+		m = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+		snd_mask_none(m);
+		snd_mask_set_format(m, snd_fmt);
 	}
 
-	m = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
-	snd_mask_none(m);
-	snd_mask_set_format(m, snd_fmt);
+	if (param_to_update & BIT(SNDRV_PCM_HW_PARAM_RATE)) {
+		unsigned int rate = fmt->sampling_frequency;
 
-	rate = fmt->sampling_frequency;
-	i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
-	i->min = rate;
-	i->max = rate;
+		i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+		i->min = rate;
+		i->max = rate;
+	}
 
-	channels = SOF_IPC4_AUDIO_FORMAT_CFG_CHANNELS_COUNT(fmt->fmt_cfg);
-	i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
-	i->min = channels;
-	i->max = channels;
+	if (param_to_update & BIT(SNDRV_PCM_HW_PARAM_CHANNELS)) {
+		unsigned int channels = SOF_IPC4_AUDIO_FORMAT_CFG_CHANNELS_COUNT(fmt->fmt_cfg);
+
+		i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+		i->min = channels;
+		i->max = channels;
+	}
 
 	return 0;
 }
@@ -1844,7 +1852,11 @@ sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget,
 	}
 
 	/* modify the input params for the next widget */
-	ret = sof_ipc4_update_hw_params(sdev, pipeline_params, &copier_data->out_format);
+	ret = sof_ipc4_update_hw_params(sdev, pipeline_params,
+					&copier_data->out_format,
+					BIT(SNDRV_PCM_HW_PARAM_FORMAT) |
+					BIT(SNDRV_PCM_HW_PARAM_CHANNELS) |
+					BIT(SNDRV_PCM_HW_PARAM_RATE));
 	if (ret)
 		return ret;
 
@@ -2069,7 +2081,10 @@ static int sof_ipc4_prepare_src_module(struct snd_sof_widget *swidget,
 	src->data.sink_rate = out_audio_fmt->sampling_frequency;
 
 	/* update pipeline_params for sink widgets */
-	return sof_ipc4_update_hw_params(sdev, pipeline_params, out_audio_fmt);
+	return sof_ipc4_update_hw_params(sdev, pipeline_params, out_audio_fmt,
+					 BIT(SNDRV_PCM_HW_PARAM_FORMAT) |
+					 BIT(SNDRV_PCM_HW_PARAM_CHANNELS) |
+					 BIT(SNDRV_PCM_HW_PARAM_RATE));
 }
 
 static int
@@ -2193,7 +2208,11 @@ static int sof_ipc4_prepare_process_module(struct snd_sof_widget *swidget,
 		       sizeof(struct sof_ipc4_audio_format));
 
 		/* modify the pipeline params with the pin 0 output format */
-		ret = sof_ipc4_update_hw_params(sdev, pipeline_params, &process->output_format);
+		ret = sof_ipc4_update_hw_params(sdev, pipeline_params,
+						&process->output_format,
+						BIT(SNDRV_PCM_HW_PARAM_FORMAT) |
+						BIT(SNDRV_PCM_HW_PARAM_CHANNELS) |
+						BIT(SNDRV_PCM_HW_PARAM_RATE));
 		if (ret)
 			return ret;
 	}