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ASoC: nau8825: make crosstalk function optional

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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 <KCHSU0@nuvoton.com>
Signed-off-by: John Hsu <supercraig0719@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
John Hsu 2017-06-22 11:57:55 +08:00 committed by Mark Brown
parent 8fe19795da
commit 2bda4288e7
2 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
sound/soc/codecs/nau8825.c
View File

@ -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) {

1
sound/soc/codecs/nau8825.h
View File

@ -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,