From 61bef9e68dca4316e1fc5fdf5f0c270bdbd65657 Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart Date: Mon, 26 Jul 2021 13:28:55 -0500 Subject: [PATCH] ASoC: SOF: Intel: hda: enforce exclusion between HDaudio and SoundWire On some platforms with an external HDaudio codec, the DSDT reports the presence of SoundWire devices. Pin-mux restrictions and board reworks usually prevent coexistence between the two types of links, let's prevent unnecessary operations from starting. In the case of a single iDISP codec being detected, we still start the links even if no SoundWire machine configuration was detected, so that we can double-check what the hardware is and add the missing configuration if applicable. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Ranjani Sridharan Reviewed-by: Bard Liao Link: https://lore.kernel.org/r/20210726182855.179943-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown --- sound/soc/sof/intel/hda.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index e1e368f..891e6e1 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -187,12 +187,16 @@ static int hda_sdw_probe(struct snd_sof_dev *sdev) int hda_sdw_startup(struct snd_sof_dev *sdev) { struct sof_intel_hda_dev *hdev; + struct snd_sof_pdata *pdata = sdev->pdata; hdev = sdev->pdata->hw_pdata; if (!hdev->sdw) return 0; + if (pdata->machine && !pdata->machine->mach_params.link_mask) + return 0; + return sdw_intel_startup(hdev->sdw); } @@ -1002,6 +1006,14 @@ static int hda_generic_machine_select(struct snd_sof_dev *sdev) hda_mach->mach_params.dmic_num = dmic_num; pdata->machine = hda_mach; pdata->tplg_filename = tplg_filename; + + if (codec_num == 2) { + /* + * Prevent SoundWire links from starting when an external + * HDaudio codec is used + */ + hda_mach->mach_params.link_mask = 0; + } } } -- 2.7.4