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ASoC: wsa881x: Avoid query temp during suspend

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Runtime suspend in slimbus driver makes QMI call which takes
wakelock and result in first system suspend to fail. As a result
of first suspend fail, POST_PM_SUSPEND event is dispatched to
thermal core which registered to pm notifier. WSA being one
of registered thermal zone gets query for temperature, and makes
slimbus reads/writes which will result in runtime resume of
slimbus driver to happen. System suspend fails again continuously
in this endless loop as slimbus runtime suspend will make QMI call
again.
Update wsa temp sensor to handle suspend event by registering to
pm notifier and ignore the temperature request from thermal core
at resume. This will avoid slimbus reads/writes during suspend in
progress and allow XO shutdown to happen.

Change-Id: Id13a9701cffb1231ef7d563cbc30756fd71d5868
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
This commit is contained in:
Sudheer Papothi
2018-04-06 00:51:48 +05:30
committed by Gerrit - the friendly Code Review server
parent 29dfffc4b2
commit c9dd3be3c3
3 changed files with 79 additions and 2 deletions
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28
asoc/codecs/wsa881x.c
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@@ -200,12 +200,40 @@ static int wsa881x_set_mute(struct snd_kcontrol *kcontrol,
return 0;
}
static int wsa881x_get_t0_init(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
struct wsa881x_priv *wsa881x = snd_soc_codec_get_drvdata(codec);
struct wsa881x_tz_priv *pdata = &wsa881x->tz_pdata;
ucontrol->value.integer.value[0] = pdata->t0_init;
dev_dbg(codec->dev, "%s: t0 init %d\n", __func__, pdata->t0_init);
return 0;
}
static int wsa881x_set_t0_init(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
struct wsa881x_priv *wsa881x = snd_soc_codec_get_drvdata(codec);
struct wsa881x_tz_priv *pdata = &wsa881x->tz_pdata;
pdata->t0_init = ucontrol->value.integer.value[0];
dev_dbg(codec->dev, "%s: t0 init %d\n", __func__, pdata->t0_init);
return 0;
}
static const struct snd_kcontrol_new wsa_snd_controls[] = {
SOC_ENUM_EXT("WSA PA Gain", wsa_pa_gain_enum,
wsa_pa_gain_get, wsa_pa_gain_put),
SOC_SINGLE_EXT("WSA PA Mute", SND_SOC_NOPM, 0, 1, 0,
wsa881x_get_mute, wsa881x_set_mute),
SOC_SINGLE_EXT("WSA T0 Init", SND_SOC_NOPM, 0, 1, 0,
wsa881x_get_t0_init, wsa881x_set_t0_init),
};
static int codec_debug_open(struct inode *inode, struct file *file)