From 2bda4288e771e51946e70329c9b79605e4612f10 Mon Sep 17 00:00:00 2001 From: John Hsu Date: Thu, 22 Jun 2017 11:57:55 +0800 Subject: [PATCH] ASoC: nau8825: make crosstalk function optional Make crosstalk functoin optional. The jack detection can speed up without crosstalk detection. Let the decision of function usage to platform design. The patch helps the issue concern as follows: Google issue 35574278: Chell_headphone pop back from S3 There is a concern as follows: cras getting blocked for 2 seconds (worst-case 3 seconds) As I understand, ChromeOS expects resume finishes in 1 seconds. Video/Audio playing after 3 seconds of resume seems against the spec. If we really have to make the choice I would choose pop noise instead of waiting for 3 seconds. Signed-off-by: John Hsu Signed-off-by: John Hsu Signed-off-by: Mark Brown --- sound/soc/codecs/nau8825.c | 6 +++++- sound/soc/codecs/nau8825.h | 1 + 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index 503a6d8130b7..a8c7a556a6a8 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -1686,7 +1686,7 @@ static irqreturn_t nau8825_interrupt(int irq, void *data) } else if (active_irq & NAU8825_HEADSET_COMPLETION_IRQ) { if (nau8825_is_jack_inserted(regmap)) { event |= nau8825_jack_insert(nau8825); - if (!nau8825->high_imped) { + if (!nau8825->xtalk_bypass && !nau8825->high_imped) { /* Apply the cross talk suppression in the * headset without high impedance. */ @@ -2504,6 +2504,10 @@ static int nau8825_read_device_properties(struct device *dev, &nau8825->jack_eject_debounce); if (ret) nau8825->jack_eject_debounce = 0; + ret = device_property_read_u32(dev, "nuvoton,crosstalk-bypass", + &nau8825->xtalk_bypass); + if (ret) + nau8825->xtalk_bypass = 1; nau8825->mclk = devm_clk_get(dev, "mclk"); if (PTR_ERR(nau8825->mclk) == -EPROBE_DEFER) { diff --git a/sound/soc/codecs/nau8825.h b/sound/soc/codecs/nau8825.h index 514fd13c2f46..8aee5c8647ae 100644 --- a/sound/soc/codecs/nau8825.h +++ b/sound/soc/codecs/nau8825.h @@ -476,6 +476,7 @@ struct nau8825 { int xtalk_event_mask; bool xtalk_protect; int imp_rms[NAU8825_XTALK_IMM]; + int xtalk_bypass; }; int nau8825_enable_jack_detect(struct snd_soc_codec *codec, -- 2.20.1