diff options
| author | Danny Smith <dannys@axis.com> | 2018-04-09 15:13:36 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-04-16 12:58:54 +0100 |
| commit | 728815e3feec751769b3a9fe406fbc529de7cdc0 (patch) | |
| tree | 31ebc9dc8a143f0b1282b31ed56170be573bb97e | |
| parent | 953de782cccf7a84e8a20cea72aea2a056fea3bf (diff) | |
| download | linux-728815e3feec751769b3a9fe406fbc529de7cdc0.tar.bz2 | |
ASoC: adau17x1: Do not reload dsp-fw if samplerate has not changed
Reloading fw causes an audiable popping sound, we can avoid this
by not reloading if the samplerate is the same as before.
Signed-off-by: Danny Smith <dannys@axis.com>
Signed-off-by: Robert Rosengren <robert.rosengren@axis.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/codecs/adau17x1.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/soc/codecs/adau17x1.c b/sound/soc/codecs/adau17x1.c index 12bf24c26818..ae41edd1c406 100644 --- a/sound/soc/codecs/adau17x1.c +++ b/sound/soc/codecs/adau17x1.c @@ -843,6 +843,15 @@ int adau17x1_setup_firmware(struct snd_soc_component *component, struct adau *adau = snd_soc_component_get_drvdata(component); struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); + /* Check if sample rate is the same as before. If it is there is no + * point in performing the below steps as the call to + * sigmadsp_setup(...) will return directly when it finds the sample + * rate to be the same as before. By checking this we can prevent an + * audiable popping noise which occours when toggling DSP_RUN. + */ + if (adau->sigmadsp->current_samplerate == rate) + return 0; + snd_soc_dapm_mutex_lock(dapm); ret = regmap_read(adau->regmap, ADAU17X1_DSP_SAMPLING_RATE, &dspsr); |