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ASoC: max98090: Fix sequencing when starting additional routes 

Enforce correct device sequencing when configuring a new
audio route when there is an existing active audio route(s).

This patch fixed recording noise issue while playback is active.

We have some registers which require the device to be in full shutdown
or to enter full shutdown before the register settings will take effect.
Currently the driver is not shutting down the device when a new audio
route is created. If a new audio route is made active while there is
already an active audio route, then the required register sequencing is
violated. A hardware shutdown toggle when creating a new audio route
corrects the sequencing error. The device must remain in hardware
shutdown for 40ms to allow the internal hardware core to fully shutdown.

Signed-off-by: Fang, Yang A <yang.a.fang@intel.com>
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Acked-by: Anish Kumar <anish.kumar@maximintegrated.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Fang, Yang A 2015-08-07 14:08:15 -07:00 committed by Mark Brown
parent bc0195aad0
commit e5b94083d0
2 changed files with 41 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
sound/soc/codecs/max98090.c
View File

@ -850,6 +850,19 @@ static int max98090_micinput_event(struct snd_soc_dapm_widget *w,
return 0;
}
static int max98090_shdn_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
struct max98090_priv *max98090 = snd_soc_codec_get_drvdata(codec);
if (event & SND_SOC_DAPM_POST_PMU)
max98090->shdn_pending = true;
return 0;
}
static const char *mic1_mux_text[] = { "IN12", "IN56" };
static SOC_ENUM_SINGLE_DECL(mic1_mux_enum,
@ -1158,9 +1171,11 @@ static const struct snd_soc_dapm_widget max98090_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("SDOEN", M98090_REG_IO_CONFIGURATION,
M98090_SDOEN_SHIFT, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("DMICL_ENA", M98090_REG_DIGITAL_MIC_ENABLE,
M98090_DIGMICL_SHIFT, 0, NULL, 0),
M98090_DIGMICL_SHIFT, 0, max98090_shdn_event,
SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_SUPPLY("DMICR_ENA", M98090_REG_DIGITAL_MIC_ENABLE,
M98090_DIGMICR_SHIFT, 0, NULL, 0),
M98090_DIGMICR_SHIFT, 0, max98090_shdn_event,
SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_SUPPLY("AHPF", M98090_REG_FILTER_CONFIG,
M98090_AHPF_SHIFT, 0, NULL, 0),
@ -1205,10 +1220,12 @@ static const struct snd_soc_dapm_widget max98090_dapm_widgets[] = {
&max98090_right_adc_mixer_controls[0],
ARRAY_SIZE(max98090_right_adc_mixer_controls)),
SND_SOC_DAPM_ADC("ADCL", NULL, M98090_REG_INPUT_ENABLE,
M98090_ADLEN_SHIFT, 0),
SND_SOC_DAPM_ADC("ADCR", NULL, M98090_REG_INPUT_ENABLE,
M98090_ADREN_SHIFT, 0),
SND_SOC_DAPM_ADC_E("ADCL", NULL, M98090_REG_INPUT_ENABLE,
M98090_ADLEN_SHIFT, 0, max98090_shdn_event,
SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_ADC_E("ADCR", NULL, M98090_REG_INPUT_ENABLE,
M98090_ADREN_SHIFT, 0, max98090_shdn_event,
SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_AIF_OUT("AIFOUTL", "HiFi Capture", 0,
SND_SOC_NOPM, 0, 0),
@ -2536,9 +2553,26 @@ static int max98090_remove(struct snd_soc_codec *codec)
return 0;
}
static void max98090_seq_notifier(struct snd_soc_dapm_context *dapm,
enum snd_soc_dapm_type event, int subseq)
{
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);
struct max98090_priv *max98090 = snd_soc_codec_get_drvdata(codec);
if (max98090->shdn_pending) {
snd_soc_update_bits(codec, M98090_REG_DEVICE_SHUTDOWN,
M98090_SHDNN_MASK, 0);
msleep(40);
snd_soc_update_bits(codec, M98090_REG_DEVICE_SHUTDOWN,
M98090_SHDNN_MASK, M98090_SHDNN_MASK);
max98090->shdn_pending = false;
}
}
static struct snd_soc_codec_driver soc_codec_dev_max98090 = {
.probe = max98090_probe,
.remove = max98090_remove,
.seq_notifier = max98090_seq_notifier,
.set_bias_level = max98090_set_bias_level,
};

1
sound/soc/codecs/max98090.h
View File

@ -1543,6 +1543,7 @@ struct max98090_priv {
unsigned int pa2en;
unsigned int sidetone;
bool master;
bool shdn_pending;
};
int max98090_mic_detect(struct snd_soc_codec *codec,