ASoC: SOF: ipc4-topology: Set FAST_MODE for host copier in compr mode

FAST_MODE allows the host DMA to work in opportunistic, free running mode,
which matches with the bitstream nature of compressed devices.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>

Author: ujfalusi

sound/soc/sof/ipc4-topology.c

@@ -687,6 +687,9 @@ static int sof_ipc4_widget_setup_pcm(struct snd_sof_widget *swidget)
 			sps->dsp_max_burst_size_in_ms = 1;
 	}
 
+	if (spcm->pcm.compress)
+		ipc4_copier->data.copier_feature_mask |= BIT(SOF_IPC4_COPIER_FAST_MODE);
+
 skip_gtw_cfg:
 	ipc4_copier->gtw_attr = kzalloc(sizeof(*ipc4_copier->gtw_attr), GFP_KERNEL);
 	if (!ipc4_copier->gtw_attr) {

sound/soc/sof/ipc4-topology.h

@@ -219,6 +219,11 @@ struct sof_copier_gateway_cfg {
 	uint32_t config_data[];
 };
 
+/* bit definition in copier_feature_mask */
+enum sof_ipc4_copier_feature {
+	SOF_IPC4_COPIER_FAST_MODE = 0, /* free running mode of host copier */
+};
+
 /**
  * struct sof_ipc4_copier_data - IPC data for copier
  * @base_config: Base configuration including input audio format