From 246126b0a4f24f8e88f148c9d0d6d72e6fafe6cc Mon Sep 17 00:00:00 2001 From: Bard Liao Date: Wed, 8 Mar 2017 19:05:33 +0800 Subject: [PATCH] ASoC: rt5665: increase button detection accuracy Use sar adc for button detection to increase accuracy. Signed-off-by: Bard Liao Signed-off-by: Mark Brown --- sound/soc/codecs/rt5665.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/rt5665.c b/sound/soc/codecs/rt5665.c index 61137160c116..de2c104bbaf3 100644 --- a/sound/soc/codecs/rt5665.c +++ b/sound/soc/codecs/rt5665.c @@ -1139,7 +1139,8 @@ static void rt5665_enable_push_button_irq(struct snd_soc_codec *codec, bool enable) { if (enable) { - snd_soc_write(codec, RT5665_4BTN_IL_CMD_1, 0x000b); + snd_soc_write(codec, RT5665_4BTN_IL_CMD_1, 0x0003); + snd_soc_update_bits(codec, RT5665_SAR_IL_CMD_9, 0x1, 0x1); snd_soc_write(codec, RT5665_IL_CMD_1, 0x0048); snd_soc_update_bits(codec, RT5665_4BTN_IL_CMD_2, RT5665_4BTN_IL_MASK | RT5665_4BTN_IL_RST_MASK, -- 2.11.0