From f751b99255cacd9ffe8c4bbf99767ad670cee1f7 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Tue, 6 Jun 2023 17:25:28 -0500
Subject: [PATCH] ASoC: SOF: Intel: fix SoundWire/HDaudio mutual exclusion
Git-commit: f751b99255cacd9ffe8c4bbf99767ad670cee1f7
Patch-mainline: v6.5-rc1
References: git-fixes

The functionality described in Commit 61bef9e68dca ("ASoC: SOF: Intel: hda: enforce exclusion between HDaudio and SoundWire")
does not seem to be properly implemented with two issues that need to
be corrected.

a) The test used is incorrect when DisplayAudio codecs are not supported.

b) Conversely when only Display Audio codecs can be found, we do want
to start the SoundWire links, if any. That will help add the relevant
topologies and machine descriptors, and identify cases where the
SoundWire information in ACPI needs to be modified with a quirk.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20230606222529.57156-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/sof/intel/hda.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 066f27e3402f..ec31a5762ddf 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -1368,12 +1368,22 @@ static void hda_generic_machine_select(struct snd_sof_dev *sdev,
 			hda_mach->mach_params.dmic_num = dmic_num;
 			pdata->tplg_filename = tplg_filename;
 
-			if (codec_num == 2) {
+			if (codec_num == 2 ||
+			    (codec_num == 1 && !HDA_IDISP_CODEC(bus->codec_mask))) {
 				/*
 				 * Prevent SoundWire links from starting when an external
 				 * HDaudio codec is used
 				 */
 				hda_mach->mach_params.link_mask = 0;
+			} else {
+				/*
+				 * Allow SoundWire links to start when no external HDaudio codec
+				 * was detected. This will not create a SoundWire card but
+				 * will help detect if any SoundWire codec reports as ATTACHED.
+				 */
+				struct sof_intel_hda_dev *hdev = sdev->pdata->hw_pdata;
+
+				hda_mach->mach_params.link_mask = hdev->info.link_mask;
 			}
 
 			*mach = hda_mach;
-- 
2.35.3