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authorPaul Handrigan <Paul.Handrigan@cirrus.com>2012-12-07 14:53:43 -0600
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-12-10 12:26:46 +0900
commit41df0829cee9e4c4ba68de33b4ca26cb18ac8ed7 (patch)
treea90bc04f25fbe6eb31ebf1551b63eca1a9083c6c /sound
parenta1ad500e369183796820bffb4012b876a8685219 (diff)
downloadlinux-next-41df0829cee9e4c4ba68de33b4ca26cb18ac8ed7.tar.gz
ASoC: cs42l73: Add DAPM events for power down.
Add power down delays between setting PDN and MCLKDIS for spk amp, spklo amp, and ear amp. Signed-off-by: Paul Handrigan <Paul.Handrigan@cirrus.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/cs42l73.c80
1 files changed, 72 insertions, 8 deletions
diff --git a/sound/soc/codecs/cs42l73.c b/sound/soc/codecs/cs42l73.c
index 476679510dff..fb9b178d6ffe 100644
--- a/sound/soc/codecs/cs42l73.c
+++ b/sound/soc/codecs/cs42l73.c
@@ -40,6 +40,7 @@ struct cs42l73_private {
u32 sysclk;
u8 mclksel;
u32 mclk;
+ int shutdwn_delay;
};
static const struct reg_default cs42l73_reg_defaults[] = {
@@ -588,6 +589,57 @@ static const struct snd_kcontrol_new cs42l73_snd_controls[] = {
SOC_ENUM("XSPOUT Mono/Stereo Select", xsp_output_mux_enum),
};
+static int cs42l73_spklo_spk_amp_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_codec *codec = w->codec;
+ struct cs42l73_private *priv = snd_soc_codec_get_drvdata(codec);
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMD:
+ /* 150 ms delay between setting PDN and MCLKDIS */
+ priv->shutdwn_delay = 150;
+ break;
+ default:
+ pr_err("Invalid event = 0x%x\n", event);
+ }
+ return 0;
+}
+
+static int cs42l73_ear_amp_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_codec *codec = w->codec;
+ struct cs42l73_private *priv = snd_soc_codec_get_drvdata(codec);
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMD:
+ /* 50 ms delay between setting PDN and MCLKDIS */
+ if (priv->shutdwn_delay < 50)
+ priv->shutdwn_delay = 50;
+ break;
+ default:
+ pr_err("Invalid event = 0x%x\n", event);
+ }
+ return 0;
+}
+
+
+static int cs42l73_hp_amp_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_codec *codec = w->codec;
+ struct cs42l73_private *priv = snd_soc_codec_get_drvdata(codec);
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMD:
+ /* 30 ms delay between setting PDN and MCLKDIS */
+ if (priv->shutdwn_delay < 30)
+ priv->shutdwn_delay = 30;
+ break;
+ default:
+ pr_err("Invalid event = 0x%x\n", event);
+ }
+ return 0;
+}
+
static const struct snd_soc_dapm_widget cs42l73_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("DMICA"),
SND_SOC_DAPM_INPUT("DMICB"),
@@ -676,16 +728,20 @@ static const struct snd_soc_dapm_widget cs42l73_dapm_widgets[] = {
SND_SOC_DAPM_PGA("SPK DAC", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("ESL DAC", SND_SOC_NOPM, 0, 0, NULL, 0),
- SND_SOC_DAPM_SWITCH("HP Amp", CS42L73_PWRCTL3, 0, 1,
- &hp_amp_ctl),
+ SND_SOC_DAPM_SWITCH_E("HP Amp", CS42L73_PWRCTL3, 0, 1,
+ &hp_amp_ctl, cs42l73_hp_amp_event,
+ SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SWITCH("LO Amp", CS42L73_PWRCTL3, 1, 1,
&lo_amp_ctl),
- SND_SOC_DAPM_SWITCH("SPK Amp", CS42L73_PWRCTL3, 2, 1,
- &spk_amp_ctl),
- SND_SOC_DAPM_SWITCH("EAR Amp", CS42L73_PWRCTL3, 3, 1,
- &ear_amp_ctl),
- SND_SOC_DAPM_SWITCH("SPKLO Amp", CS42L73_PWRCTL3, 4, 1,
- &spklo_amp_ctl),
+ SND_SOC_DAPM_SWITCH_E("SPK Amp", CS42L73_PWRCTL3, 2, 1,
+ &spk_amp_ctl, cs42l73_spklo_spk_amp_event,
+ SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_SWITCH_E("EAR Amp", CS42L73_PWRCTL3, 3, 1,
+ &ear_amp_ctl, cs42l73_ear_amp_event,
+ SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_SWITCH_E("SPKLO Amp", CS42L73_PWRCTL3, 4, 1,
+ &spklo_amp_ctl, cs42l73_spklo_spk_amp_event,
+ SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_OUTPUT("HPOUTA"),
SND_SOC_DAPM_OUTPUT("HPOUTB"),
@@ -1171,6 +1227,14 @@ static int cs42l73_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_OFF:
snd_soc_update_bits(codec, CS42L73_PWRCTL1, PDN, 1);
+ if (cs42l73->shutdwn_delay > 0) {
+ mdelay(cs42l73->shutdwn_delay);
+ cs42l73->shutdwn_delay = 0;
+ } else {
+ mdelay(15); /* Min amount of time requred to power
+ * down.
+ */
+ }
snd_soc_update_bits(codec, CS42L73_DMMCC, MCLKDIS, 1);
break;
}