On 04/09/2018 03:13 PM, Robert Rosengren wrote:
From: Danny Smith dannys@axis.com
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
sound/soc/codecs/adau17x1.c | 9 +++++++++ 1 file changed, 9 insertions(+)
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);