[PATCH 2/3] ASoC: SOF: ipc4-topology: Account for different ChainDMA host buffer size

[Peter Ujfalusi <peter.ujfalusi@linux.intel.com>]

For ChainDMA the firmware allocates 5ms host buffer instead of the standard
4ms which should be taken into account when setting the constraint on the
buffer size.

Cc: stable@vger.kernel.org
Fixes: 72af064faead ("ASoC: SOF: ipc4-topology: Save the DMA maximum burst size for PCMs")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
 sound/soc/sof/ipc4-topology.c | 9 +++++++--
 sound/soc/sof/ipc4-topology.h | 3 +++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sof/ipc4-topology.c b/sound/soc/sof/ipc4-topology.c
index b6a732d0adb4..60cd7955e24f 100644
--- a/sound/soc/sof/ipc4-topology.c
+++ b/sound/soc/sof/ipc4-topology.c
@@ -666,8 +666,13 @@ static int sof_ipc4_widget_setup_pcm(struct snd_sof_widget *swidget)
 				      swidget->tuples,
 				      swidget->num_tuples, sizeof(u32), 1);
 		/* Set default DMA buffer size if it is not specified in topology */
-		if (!sps->dsp_max_burst_size_in_ms)
-			sps->dsp_max_burst_size_in_ms = SOF_IPC4_MIN_DMA_BUFFER_SIZE;
+		if (!sps->dsp_max_burst_size_in_ms) {
+			struct snd_sof_widget *pipe_widget = swidget->spipe->pipe_widget;
+			struct sof_ipc4_pipeline *pipeline = pipe_widget->private;
+
+			sps->dsp_max_burst_size_in_ms = pipeline->use_chain_dma ?
+				SOF_IPC4_CHAIN_DMA_BUFFER_SIZE : SOF_IPC4_MIN_DMA_BUFFER_SIZE;
+		}
 	} else {
 		/* Capture data is copied from DSP to host in 1ms bursts */
 		spcm->stream[dir].dsp_max_burst_size_in_ms = 1;
diff --git a/sound/soc/sof/ipc4-topology.h b/sound/soc/sof/ipc4-topology.h
index d6894fdd7e1d..fc3b6411b9b2 100644
--- a/sound/soc/sof/ipc4-topology.h
+++ b/sound/soc/sof/ipc4-topology.h
@@ -73,6 +73,9 @@
 /* FW requires minimum 4ms DMA buffer size */
 #define SOF_IPC4_MIN_DMA_BUFFER_SIZE	4
 
+/* ChainDMA in fw uses 5ms DMA buffer */
+#define SOF_IPC4_CHAIN_DMA_BUFFER_SIZE	5
+
 /*
  * The base of multi-gateways. Multi-gateways addressing starts from
  * ALH_MULTI_GTW_BASE and there are ALH_MULTI_GTW_COUNT multi-sources
-- 
2.51.0