Commit be1798d0 authored by Pierre-Louis Bossart's avatar Pierre-Louis Bossart Committed by Vinod Koul
Browse files

ASoC: SOF: Intel: hda: retrieve SoundWire eml_lock and pass pointer 



Use new helper and interface to make sure the HDaudio and SoundWire
parts use the same mutex when accessing shared registers.

Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: default avatarRander Wang <rander.wang@intel.com>
Reviewed-by: default avatarPéter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: default avatarRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: default avatarBard Liao <yung-chuan.liao@linux.intel.com>
Acked-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230515071042.2038-9-yung-chuan.liao@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent ec2c9dbe

sound/soc/sof/intel/hda.c

+9 −0
Original line number Diff line number Diff line
@@ -175,6 +175,15 @@ static int hda_sdw_probe(struct snd_sof_dev *sdev) 
		res.alh_base = hdev->desc->sdw_alh_base;

		res.ext = false;

	} else {

		/*

		 * retrieve eml_lock needed to protect shared registers

		 * in the HDaudio multi-link areas

		 */

		res.eml_lock = hdac_bus_eml_get_mutex(sof_to_bus(sdev), true,

						      AZX_REG_ML_LEPTR_ID_SDW);

		if (!res.eml_lock)

			return -ENODEV;



		res.mmio_base = sdev->bar[HDA_DSP_HDA_BAR];

		/*

		 * the SHIM and SoundWire register offsets are link-specific