From f607e31ce3963327f749b56c65dfec2642aa623c Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 22 Feb 2013 18:36:53 +0000 Subject: ASoC: arizona: Fix interaction between headphone outputs and identification Running HPDET while the headphone outputs are enabled can disrupt the operation of HPDET. In order to avoid this HPDET needs to disable the headphone outputs and ASoC needs to not enable them while HPDET is running. Do the ASoC side of this by storing the enable state in the core driver structure and only writing to the device if a flag indicating that the accessory detection side is in a state where it can have the headphone output stage enabled. Signed-off-by: Mark Brown --- sound/soc/codecs/arizona.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'sound/soc/codecs/arizona.c') diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index ac948a671ea6..e7d34711412c 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -364,6 +364,39 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w, } EXPORT_SYMBOL_GPL(arizona_out_ev); +int arizona_hp_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, + int event) +{ + struct arizona_priv *priv = snd_soc_codec_get_drvdata(w->codec); + unsigned int mask = 1 << w->shift; + unsigned int val; + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + val = mask; + break; + case SND_SOC_DAPM_PRE_PMD: + val = 0; + break; + default: + return -EINVAL; + } + + /* Store the desired state for the HP outputs */ + priv->arizona->hp_ena &= ~mask; + priv->arizona->hp_ena |= val; + + /* Force off if HPDET magic is active */ + if (priv->arizona->hpdet_magic) + val = 0; + + snd_soc_update_bits(w->codec, ARIZONA_OUTPUT_ENABLES_1, mask, val); + + return arizona_out_ev(w, kcontrol, event); +} +EXPORT_SYMBOL_GPL(arizona_hp_ev); + static unsigned int arizona_sysclk_48k_rates[] = { 6144000, 12288000, -- cgit