ASoC: Intel: sof_nau8825: always set dpcm_capture for amplifiers

The amplifier may provide hardware support for I/V feedback, or
alternatively the firmware may generate an echo reference attached to
the SSP and dailink used for the amplifier.

To avoid any issues with invalid/NULL substreams in the latter case,
always unconditionally set dpcm_capture.

Link: https://github.com/thesofproject/linux/issues/4083
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20230119163459.2235843-4-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/boards/sof_nau8825.c b/sound/soc/intel/boards/sof_nau8825.c
index a800854..6794a02 100644 (file)
--- a/sound/soc/intel/boards/sof_nau8825.c
+++ b/sound/soc/intel/boards/sof_nau8825.c
@@ -487,8 +487,6 @@ static struct snd_soc_dai_link *sof_card_dai_links_create(struct device *dev,
                        links[id].num_codecs = ARRAY_SIZE(max_98373_components);
                        links[id].init = max_98373_spk_codec_init;
                        links[id].ops = &max_98373_ops;
-                       /* feedback stream */
-                       links[id].dpcm_capture = 1;
                } else if (sof_nau8825_quirk &
                                SOF_MAX98360A_SPEAKER_AMP_PRESENT) {
                        max_98360a_dai_link(&links[id]);
@@ -506,6 +504,9 @@ static struct snd_soc_dai_link *sof_card_dai_links_create(struct device *dev,
                links[id].platforms = platform_component;
                links[id].num_platforms = ARRAY_SIZE(platform_component);
                links[id].dpcm_playback = 1;
+               /* feedback stream or firmware-generated echo reference */
+               links[id].dpcm_capture = 1;
+
                links[id].no_pcm = 1;
                links[id].cpus = &cpus[id];
                links[id].num_cpus = 1;