From 583a9debd71e21a317b1fc7b293c22c49b33d9e4 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sun, 4 Mar 2018 15:35:52 +0100 Subject: ASoC: rt5651: Allow specifying over-current threshold through a device-property OVer-Current-Detection (OVCD) for the micbias current is used to detect if an inserted jack is a headset or headphones (mic shorted to ground). Some boards may need different values for the OVCD current threshold because of a resistor on the board in serial with or parallel to the jack mic contact. This commit adds support for configuring the OCVD current threshold through the "realtek,over-current-threshold-microamp" device-property. Note this commit changes the default value from 600uA to 2000uA, because testing has shown 600uA to be a poor default. Signed-off-by: Hans de Goede Signed-off-by: Mark Brown --- sound/soc/codecs/rt5651.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) (limited to 'sound/soc/codecs/rt5651.c') diff --git a/sound/soc/codecs/rt5651.c b/sound/soc/codecs/rt5651.c index 50e1c501b6b9..7ff1bc892cfd 100644 --- a/sound/soc/codecs/rt5651.c +++ b/sound/soc/codecs/rt5651.c @@ -1638,7 +1638,7 @@ static int rt5651_set_jack(struct snd_soc_component *component, RT5651_PWR_CLK12M_MASK | RT5651_PWR_MB_MASK, RT5651_MIC1_OVCD_EN | - RT5651_MIC1_OVTH_600UA | + rt5651->ovcd_th | RT5651_PWR_MB_PU | RT5651_PWR_CLK12M_PU); @@ -1684,6 +1684,26 @@ static void rt5651_apply_properties(struct snd_soc_component *component) if (device_property_read_u32(component->dev, "realtek,jack-detect-source", &val) == 0) rt5651->jd_src = val; + + rt5651->ovcd_th = RT5651_MIC1_OVTH_2000UA; + + if (device_property_read_u32(component->dev, + "realtek,over-current-threshold-microamp", &val) == 0) { + switch (val) { + case 600: + rt5651->ovcd_th = RT5651_MIC1_OVTH_600UA; + break; + case 1500: + rt5651->ovcd_th = RT5651_MIC1_OVTH_1500UA; + break; + case 2000: + rt5651->ovcd_th = RT5651_MIC1_OVTH_2000UA; + break; + default: + dev_warn(component->dev, "Warning: Invalid over-current-threshold-microamp value: %d, defaulting to 2000uA\n", + val); + } + } } static int rt5651_probe(struct snd_soc_component *component) -- cgit v1.2.3