redonkable/alistair23-linux
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ASoC: WM8996 only needs bandgap for analogue functionality

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Rather than managing the bandgap in the bias level control use a supply
widget as we only actually need to enable it for analogue paths, not
fully digital ones.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
This commit is contained in:
Mark Brown 2011-09-16 17:55:06 +01:00
parent 53daf20893
commit 8259df12fd
1 changed files with 29 additions and 11 deletions
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40
sound/soc/codecs/wm8996.c
View file

@ -666,6 +666,25 @@ SOC_SINGLE_TLV("DSP2 EQ B5 Volume", WM8996_DSP2_RX_EQ_GAINS_2, 6, 31, 0,
eq_tlv),
};
static int bg_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
struct wm8996_priv *wm8996 = snd_soc_codec_get_drvdata(codec);
int ret = 0;
switch (event) {
case SND_SOC_DAPM_POST_PMU:
msleep(2);
break;
default:
BUG();
ret = -EINVAL;
}
return ret;
}
static int cp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
@ -999,7 +1018,8 @@ SND_SOC_DAPM_SUPPLY_S("AIFCLK", 2, WM8996_CLOCKING_1, 2, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY_S("Charge Pump", 2, WM8996_CHARGE_PUMP_1, 15, 0, cp_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("Bandgap", WM8996_POWER_MANAGEMENT_1, WM8996_BG_ENA_SHIFT,
0, bg_event, SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_SUPPLY("LDO2", WM8996_POWER_MANAGEMENT_2, 1, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("MICB1 Audio", WM8996_MICBIAS_1, 4, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY("MICB2 Audio", WM8996_MICBIAS_2, 4, 1, NULL, 0),
@ -1159,18 +1179,22 @@ static const struct snd_soc_dapm_route wm8996_dapm_routes[] = {
{ "MICB1", NULL, "LDO2" },
{ "MICB1", NULL, "MICB1 Audio" },
{ "MICB1", NULL, "Bandgap" },
{ "MICB2", NULL, "LDO2" },
{ "MICB2", NULL, "MICB2 Audio" },
{ "MICB2", NULL, "Bandgap" },
{ "IN1L PGA", NULL, "IN2LN" },
{ "IN1L PGA", NULL, "IN2LP" },
{ "IN1L PGA", NULL, "IN1LN" },
{ "IN1L PGA", NULL, "IN1LP" },
{ "IN1L PGA", NULL, "Bandgap" },
{ "IN1R PGA", NULL, "IN2RN" },
{ "IN1R PGA", NULL, "IN2RP" },
{ "IN1R PGA", NULL, "IN1RN" },
{ "IN1R PGA", NULL, "IN1RP" },
{ "IN1R PGA", NULL, "Bandgap" },
{ "ADCL", NULL, "IN1L PGA" },
@ -1304,6 +1328,7 @@ static const struct snd_soc_dapm_route wm8996_dapm_routes[] = {
{ "DAC2R", NULL, "DAC2R Mixer" },
{ "HPOUT2L PGA", NULL, "Charge Pump" },
{ "HPOUT2L PGA", NULL, "Bandgap" },
{ "HPOUT2L PGA", NULL, "DAC2L" },
{ "HPOUT2L_DLY", NULL, "HPOUT2L PGA" },
{ "HPOUT2L_DCS", NULL, "HPOUT2L_DLY" },
@ -1311,6 +1336,7 @@ static const struct snd_soc_dapm_route wm8996_dapm_routes[] = {
{ "HPOUT2L_RMV_SHORT", NULL, "HPOUT2L_OUTP" },
{ "HPOUT2R PGA", NULL, "Charge Pump" },
{ "HPOUT2R PGA", NULL, "Bandgap" },
{ "HPOUT2R PGA", NULL, "DAC2R" },
{ "HPOUT2R_DLY", NULL, "HPOUT2R PGA" },
{ "HPOUT2R_DCS", NULL, "HPOUT2R_DLY" },
@ -1318,6 +1344,7 @@ static const struct snd_soc_dapm_route wm8996_dapm_routes[] = {
{ "HPOUT2R_RMV_SHORT", NULL, "HPOUT2R_OUTP" },
{ "HPOUT1L PGA", NULL, "Charge Pump" },
{ "HPOUT1L PGA", NULL, "Bandgap" },
{ "HPOUT1L PGA", NULL, "DAC1L" },
{ "HPOUT1L_DLY", NULL, "HPOUT1L PGA" },
{ "HPOUT1L_DCS", NULL, "HPOUT1L_DLY" },
@ -1325,6 +1352,7 @@ static const struct snd_soc_dapm_route wm8996_dapm_routes[] = {
{ "HPOUT1L_RMV_SHORT", NULL, "HPOUT1L_OUTP" },
{ "HPOUT1R PGA", NULL, "Charge Pump" },
{ "HPOUT1R PGA", NULL, "Bandgap" },
{ "HPOUT1R PGA", NULL, "DAC1R" },
{ "HPOUT1R_DLY", NULL, "HPOUT1R PGA" },
{ "HPOUT1R_DCS", NULL, "HPOUT1R_DLY" },
@ -1643,14 +1671,7 @@ static int wm8996_set_bias_level(struct snd_soc_codec *codec,
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
snd_soc_update_bits(codec, WM8996_POWER_MANAGEMENT_1,
WM8996_BG_ENA, WM8996_BG_ENA);
msleep(2);
}
break;
case SND_SOC_BIAS_STANDBY:
@ -1673,9 +1694,6 @@ static int wm8996_set_bias_level(struct snd_soc_codec *codec,
codec->cache_only = false;
snd_soc_cache_sync(codec);
}
snd_soc_update_bits(codec, WM8996_POWER_MANAGEMENT_1,
WM8996_BG_ENA, 0);
break;
case SND_SOC_BIAS_OFF: