The patch

ASoC: rt5651: Enable LDO and micbias1 supplies for jack-type detection

has been applied to the asoc tree at

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

From 1310e737a68741c9b06cf63be0084bae6018b308 Mon Sep 17 00:00:00 2001

From: Hans de Goede hdegoede@redhat.com Date: Sun, 25 Feb 2018 11:46:55 +0100 Subject: [PATCH] ASoC: rt5651: Enable LDO and micbias1 supplies for jack-type detection

To determine if a plugged in jack is a headset (speakers + mic) or headphones (mic contact shorted to ground) we use the micbias1 OVer Current Detect (OVCD) functionality.

For this to work we need to have a micbias current to actually cause an overcurrent condition when headphones are plugged in, so jack-type detection requires both the LDO and micbias1 supplies to be on.

Before this commit there were 2 issues with the handling of this: 1) The LDO supply was force-enabled twice and never disabled again even though it only needs to be forced on when doing jack-type detection 2) micbias1 was not force-enabled, and thus may be off when doing jack-type detection

This commit fixes both by force-enabling the LDO and micbias1 supplies before checking for an overcurrent condition and disabling them afterwards.

Note that both supplies will still get turned on normally (and OVCD will protect against overcurrent) when the micbias1 is enabled normally because the user has activated a sound stream recording from the mic.

Tested-by: Carlo Caione carlo@endlessm.com Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/rt5651.c | 32 ++++++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/rt5651.c b/sound/soc/codecs/rt5651.c index cbf9f56ecb14..be942886700d 100644 --- a/sound/soc/codecs/rt5651.c +++ b/sound/soc/codecs/rt5651.c @@ -1561,6 +1561,28 @@ static int rt5651_set_bias_level(struct snd_soc_component *component, return 0; }

+static void rt5651_enable_micbias1_for_ovcd(struct snd_soc_component *component) +{ + struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); + + snd_soc_dapm_mutex_lock(dapm); + snd_soc_dapm_force_enable_pin_unlocked(dapm, "LDO"); + snd_soc_dapm_force_enable_pin_unlocked(dapm, "micbias1"); + snd_soc_dapm_sync_unlocked(dapm); + snd_soc_dapm_mutex_unlock(dapm); +} + +static void rt5651_disable_micbias1_for_ovcd(struct snd_soc_component *component) +{ + struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); + + snd_soc_dapm_mutex_lock(dapm); + snd_soc_dapm_disable_pin_unlocked(dapm, "micbias1"); + snd_soc_dapm_disable_pin_unlocked(dapm, "LDO"); + snd_soc_dapm_sync_unlocked(dapm); + snd_soc_dapm_mutex_unlock(dapm); +} + static irqreturn_t rt5651_irq(int irq, void *data) { struct rt5651_priv *rt5651 = data; @@ -1574,7 +1596,6 @@ static irqreturn_t rt5651_irq(int irq, void *data) static int rt5651_set_jack(struct snd_soc_component *component, struct snd_soc_jack *hp_jack, void *data) { - struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); struct rt5651_priv *rt5651 = snd_soc_component_get_drvdata(component); int ret;

@@ -1616,9 +1637,6 @@ static int rt5651_set_jack(struct snd_soc_component *component, snd_soc_component_update_bits(component, RT5651_PWR_ANLG2, RT5651_PWR_JD_M, RT5651_PWR_JD_M);

- snd_soc_dapm_force_enable_pin(dapm, "LDO"); - snd_soc_dapm_sync(dapm); - snd_soc_component_update_bits(component, RT5651_MICBIAS, 0x38, 0x38);

rt5651->hp_jack = hp_jack; @@ -1819,13 +1837,10 @@ static const struct dmi_system_id rt5651_quirk_table[] = {

static int rt5651_jack_detect(struct snd_soc_component *component, int jack_insert) { - struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); int jack_type;

if (jack_insert) { - snd_soc_dapm_force_enable_pin(dapm, "LDO"); - snd_soc_dapm_sync(dapm); - + rt5651_enable_micbias1_for_ovcd(component); snd_soc_component_update_bits(component, RT5651_MICBIAS, RT5651_MIC1_OVCD_MASK | RT5651_MIC1_OVTH_MASK | @@ -1842,6 +1857,7 @@ static int rt5651_jack_detect(struct snd_soc_component *component, int jack_inse jack_type = SND_JACK_HEADSET; snd_soc_component_update_bits(component, RT5651_IRQ_CTRL2, RT5651_MB1_OC_CLR, 0); + rt5651_disable_micbias1_for_ovcd(component); } else { /* jack out */ jack_type = 0;