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ASoC: nau8824: user configuration of key detection

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The SAR ADC of key press detection varies depending on headset.
We can't make a set of common threshold values for every case.
Therefore, the driver provides configuration for user and
they can set up values by UCM configuration.

Signed-off-by: John Hsu <KCHSU0@nuvoton.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
John Hsu 2018-03-21 15:30:23 +08:00 • committed by Mark Brown
parent 13838c11c3
commit 7b0037fa2d
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GPG key ID: 24D68B725D5487D0
1 changed files with 9 additions and 0 deletions
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9
sound/soc/codecs/nau8824.c
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@ -409,6 +409,15 @@ static const struct snd_kcontrol_new nau8824_snd_controls[] = {
SOC_SINGLE("DACL LR Mix", NAU8824_REG_DAC_MUTE_CTRL, 0, 1, 0),
SOC_SINGLE("DACR LR Mix", NAU8824_REG_DAC_MUTE_CTRL, 1, 1, 0),
SOC_SINGLE("THD for key media",
NAU8824_REG_VDET_THRESHOLD_1, 8, 0xff, 0),
SOC_SINGLE("THD for key voice command",
NAU8824_REG_VDET_THRESHOLD_1, 0, 0xff, 0),
SOC_SINGLE("THD for key volume up",
NAU8824_REG_VDET_THRESHOLD_2, 8, 0xff, 0),
SOC_SINGLE("THD for key volume down",
NAU8824_REG_VDET_THRESHOLD_2, 0, 0xff, 0),
};
static int nau8824_output_dac_event(struct snd_soc_dapm_widget *w,