[PATCH 02/15] ASoC: SOF: ops: add new 'is_chain_dma_supported' callback

[Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>]

From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>

IPC4 introduced a 'chain-dma' mode when host and link DMA are
connected by firmware without using a regular pipeline or the ability
to add intermediate connections. This mode is not available on all
platforms and all links, so add a platform-specific callback to help
the SOF ipc4-topology core handle different hardware+firmware
configurations.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>
Reviewed-by: Rander Wang <rander.wang@xxxxxxxxx>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
---
 sound/soc/sof/ops.h      | 9 +++++++++
 sound/soc/sof/sof-priv.h | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/sound/soc/sof/ops.h b/sound/soc/sof/ops.h
index 6538d9f4fe96..6cf21e829e07 100644
--- a/sound/soc/sof/ops.h
+++ b/sound/soc/sof/ops.h
@@ -567,6 +567,15 @@ snd_sof_set_mach_params(struct snd_soc_acpi_mach *mach,
 		sof_ops(sdev)->set_mach_params(mach, sdev);
 }
 
+static inline bool
+snd_sof_is_chain_dma_supported(struct snd_sof_dev *sdev, u32 dai_type)
+{
+	if (sof_ops(sdev) && sof_ops(sdev)->is_chain_dma_supported)
+		return sof_ops(sdev)->is_chain_dma_supported(sdev, dai_type);
+
+	return false;
+}
+
 /**
  * snd_sof_dsp_register_poll_timeout - Periodically poll an address
  * until a condition is met or a timeout occurs
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 6d7897bf9607..6c163c008607 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -338,6 +338,8 @@ struct snd_sof_dsp_ops {
 	struct snd_soc_dai_driver *drv;
 	int num_drv;
 
+	bool (*is_chain_dma_supported)(struct snd_sof_dev *sdev, u32 dai_type); /* optional */
+
 	/* ALSA HW info flags, will be stored in snd_pcm_runtime.hw.info */
 	u32 hw_info;
 
-- 
2.43.0