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ASoC: Intel: Boards: tgl_max98373: add dai_trigger function

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Speaker amplifier feedback is not modeled as being dependent on any
active output. Even when there is no playback happening, parts of the
graph, specifically the IV sense->speaker protection->output remains
active and this prevents the DSP from entering low-power states.

This patch suggests a machine driver level approach where the speaker
pins are enabled/disabled dynamically depending on stream start/stop
events. DPAM graph representations show the feedback loop is indeed
disabled and low-power states can be reached.

Signed-off-by: Dharageswari R <dharageswari.r@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20200625191308.3322-8-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Dharageswari R
2020-06-25 14:12:58 -05:00
committed by Mark Brown
parent 2697f3af42
commit 94d2d08974
2 changed files with 54 additions and 0 deletions
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9
sound/soc/intel/boards/sof_rt5682.c
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@@ -318,6 +318,7 @@ static int sof_card_late_probe(struct snd_soc_card *card)
{
struct sof_card_private *ctx = snd_soc_card_get_drvdata(card);
struct snd_soc_component *component = NULL;
struct snd_soc_dapm_context *dapm = &card->dapm;
char jack_name[NAME_SIZE];
struct sof_hdmi_pcm *pcm;
int err;
@@ -356,6 +357,14 @@ static int sof_card_late_probe(struct snd_soc_card *card)
i++;
}
if (sof_rt5682_quirk & SOF_MAX98373_SPEAKER_AMP_PRESENT) {
/* Disable Left and Right Spk pin after boot */
snd_soc_dapm_disable_pin(dapm, "Left Spk");
snd_soc_dapm_disable_pin(dapm, "Right Spk");
err = snd_soc_dapm_sync(dapm);
if (err < 0)
return err;
}
return hdac_hdmi_jack_port_init(component, &card->dapm);
}