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Subject[PATCH 1/3] ASoC: es8316: Add support for inverted jack detect
Date
On some devices (Teclast X98+ II tablet, maybe others), the jack
detection has been wired backwards, so when the ES8316 reports
headphones being present it means they are actually not plugged.

Use a quirk around this incorrect behaviour, which can be enabled
through the 'everest,jack-detect-inverted' boolean device property.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
sound/soc/codecs/es8316.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/sound/soc/codecs/es8316.c b/sound/soc/codecs/es8316.c
index 6d4a323f786b..ec2770b3f77d 100644
--- a/sound/soc/codecs/es8316.c
+++ b/sound/soc/codecs/es8316.c
@@ -43,6 +43,7 @@ struct es8316_priv {
unsigned int sysclk;
unsigned int allowed_rates[NR_SUPPORTED_MCLK_LRCK_RATIOS];
struct snd_pcm_hw_constraint_list sysclk_constraints;
+ bool jd_inverted;
};

/*
@@ -577,6 +578,9 @@ static irqreturn_t es8316_irq(int irq, void *data)
if (!es8316->jack)
goto out;

+ if (es8316->jd_inverted)
+ flags ^= ES8316_GPIO_FLAG_HP_NOT_INSERTED;
+
dev_dbg(comp->dev, "gpio flags %#04x\n", flags);
if (flags & ES8316_GPIO_FLAG_HP_NOT_INSERTED) {
/* Jack removed, or spurious IRQ? */
@@ -592,6 +596,8 @@ static irqreturn_t es8316_irq(int irq, void *data)
/* Jack inserted, determine type */
es8316_enable_micbias_for_mic_gnd_short_detect(comp);
regmap_read(es8316->regmap, ES8316_GPIO_FLAG, &flags);
+ if (es8316->jd_inverted)
+ flags ^= ES8316_GPIO_FLAG_HP_NOT_INSERTED;
dev_dbg(comp->dev, "gpio flags %#04x\n", flags);
if (flags & ES8316_GPIO_FLAG_HP_NOT_INSERTED) {
/* Jack unplugged underneath us */
@@ -633,6 +639,14 @@ static void es8316_enable_jack_detect(struct snd_soc_component *component,
{
struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);

+ /*
+ * Init es8316->jd_inverted here and not in the probe, as we cannot
+ * guarantee that the bytchr-es8316 driver, which might set this
+ * property, will probe before us.
+ */
+ es8316->jd_inverted = device_property_read_bool(component->dev,
+ "everest,jack-detect-inverted");
+
mutex_lock(&es8316->lock);

es8316->jack = jack;
--
2.11.0
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