[PATCH 03/15] ASoC: SOF: Intel: hda: add 'is_chain_dma_supported' callback

[Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>]

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

Reuse existing function to get the interface mask and expose it to the
SOF core with a callback - the main user is the IPC4 topology so only
HDaudio platforms provide this callback.

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/intel/hda-common-ops.c |  1 +
 sound/soc/sof/intel/hda.c            | 63 ++++++++++++++++++++++------
 sound/soc/sof/intel/hda.h            |  5 +++
 sound/soc/sof/sof-priv.h             |  7 ++++
 4 files changed, 64 insertions(+), 12 deletions(-)

diff --git a/sound/soc/sof/intel/hda-common-ops.c b/sound/soc/sof/intel/hda-common-ops.c
index 26105d8f1bdc..2b385cddc385 100644
--- a/sound/soc/sof/intel/hda-common-ops.c
+++ b/sound/soc/sof/intel/hda-common-ops.c
@@ -83,6 +83,7 @@ struct snd_sof_dsp_ops sof_hda_common_ops = {
 	/* DAI drivers */
 	.drv		= skl_dai,
 	.num_drv	= SOF_SKL_NUM_DAIS,
+	.is_chain_dma_supported	= hda_is_chain_dma_supported,
 
 	/* PM */
 	.suspend		= hda_dsp_suspend,
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index fe4ae349dad5..0bae439feb8b 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -46,44 +46,83 @@
 #define EXCEPT_MAX_HDR_SIZE	0x400
 #define HDA_EXT_ROM_STATUS_SIZE 8
 
-static u32 hda_get_interface_mask(struct snd_sof_dev *sdev)
+static void hda_get_interfaces(struct snd_sof_dev *sdev, u32 *interface_mask)
 {
 	const struct sof_intel_dsp_desc *chip;
-	u32 interface_mask[2] = { 0 };
 
 	chip = get_chip_info(sdev->pdata);
 	switch (chip->hw_ip_version) {
 	case SOF_INTEL_TANGIER:
 	case SOF_INTEL_BAYTRAIL:
 	case SOF_INTEL_BROADWELL:
-		interface_mask[0] =  BIT(SOF_DAI_INTEL_SSP);
+		interface_mask[SOF_DAI_DSP_ACCESS] =  BIT(SOF_DAI_INTEL_SSP);
 		break;
 	case SOF_INTEL_CAVS_1_5:
 	case SOF_INTEL_CAVS_1_5_PLUS:
-		interface_mask[0] = BIT(SOF_DAI_INTEL_SSP) | BIT(SOF_DAI_INTEL_DMIC) |
-				    BIT(SOF_DAI_INTEL_HDA);
-		interface_mask[1] = BIT(SOF_DAI_INTEL_HDA);
+		interface_mask[SOF_DAI_DSP_ACCESS] =
+			BIT(SOF_DAI_INTEL_SSP) | BIT(SOF_DAI_INTEL_DMIC) | BIT(SOF_DAI_INTEL_HDA);
+		interface_mask[SOF_DAI_HOST_ACCESS] = BIT(SOF_DAI_INTEL_HDA);
 		break;
 	case SOF_INTEL_CAVS_1_8:
 	case SOF_INTEL_CAVS_2_0:
 	case SOF_INTEL_CAVS_2_5:
 	case SOF_INTEL_ACE_1_0:
-		interface_mask[0] = BIT(SOF_DAI_INTEL_SSP) | BIT(SOF_DAI_INTEL_DMIC) |
-				    BIT(SOF_DAI_INTEL_HDA) | BIT(SOF_DAI_INTEL_ALH);
-		interface_mask[1] = BIT(SOF_DAI_INTEL_HDA);
+		interface_mask[SOF_DAI_DSP_ACCESS] =
+			BIT(SOF_DAI_INTEL_SSP) | BIT(SOF_DAI_INTEL_DMIC) |
+			BIT(SOF_DAI_INTEL_HDA) | BIT(SOF_DAI_INTEL_ALH);
+		interface_mask[SOF_DAI_HOST_ACCESS] = BIT(SOF_DAI_INTEL_HDA);
 		break;
 	case SOF_INTEL_ACE_2_0:
-		interface_mask[0] = BIT(SOF_DAI_INTEL_SSP) | BIT(SOF_DAI_INTEL_DMIC) |
-				    BIT(SOF_DAI_INTEL_HDA) | BIT(SOF_DAI_INTEL_ALH);
-		interface_mask[1] = interface_mask[0]; /* all interfaces accessible without DSP */
+		interface_mask[SOF_DAI_DSP_ACCESS] =
+			BIT(SOF_DAI_INTEL_SSP) | BIT(SOF_DAI_INTEL_DMIC) |
+			BIT(SOF_DAI_INTEL_HDA) | BIT(SOF_DAI_INTEL_ALH);
+		 /* all interfaces accessible without DSP */
+		interface_mask[SOF_DAI_HOST_ACCESS] =
+			interface_mask[SOF_DAI_DSP_ACCESS];
 		break;
 	default:
 		break;
 	}
+}
+
+static u32 hda_get_interface_mask(struct snd_sof_dev *sdev)
+{
+	u32 interface_mask[SOF_DAI_ACCESS_NUM] = { 0 };
+
+	hda_get_interfaces(sdev, interface_mask);
 
 	return interface_mask[sdev->dspless_mode_selected];
 }
 
+bool hda_is_chain_dma_supported(struct snd_sof_dev *sdev, u32 dai_type)
+{
+	u32 interface_mask[SOF_DAI_ACCESS_NUM] = { 0 };
+	const struct sof_intel_dsp_desc *chip;
+
+	if (sdev->dspless_mode_selected)
+		return false;
+
+	hda_get_interfaces(sdev, interface_mask);
+
+	if (!(interface_mask[SOF_DAI_DSP_ACCESS] & BIT(dai_type)))
+		return false;
+
+	if (dai_type == SOF_DAI_INTEL_HDA)
+		return true;
+
+	switch (dai_type) {
+	case SOF_DAI_INTEL_SSP:
+	case SOF_DAI_INTEL_DMIC:
+	case SOF_DAI_INTEL_ALH:
+		chip = get_chip_info(sdev->pdata);
+		if (chip->hw_ip_version < SOF_INTEL_ACE_2_0)
+			return false;
+		return true;
+	default:
+		return false;
+	}
+}
+
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE)
 
 /*
diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h
index 1592e27bc14d..b36eb7c78913 100644
--- a/sound/soc/sof/intel/hda.h
+++ b/sound/soc/sof/intel/hda.h
@@ -573,6 +573,11 @@ struct sof_intel_hda_stream {
 
 #define SOF_STREAM_SD_OFFSET_CRST 0x1
 
+/*
+ * DAI support
+ */
+bool hda_is_chain_dma_supported(struct snd_sof_dev *sdev, u32 dai_type);
+
 /*
  * DSP Core services.
  */
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 6c163c008607..5e5c5a36c3c9 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -157,6 +157,13 @@ struct sof_firmware {
 	u32 payload_offset;
 };
 
+enum sof_dai_access {
+	SOF_DAI_DSP_ACCESS,	/* access from DSP only */
+	SOF_DAI_HOST_ACCESS,	/* access from host only */
+
+	SOF_DAI_ACCESS_NUM
+};
+
 /*
  * SOF DSP HW abstraction operations.
  * Used to abstract DSP HW architecture and any IO busses between host CPU
-- 
2.43.0