commit e226445802cb2a51c3cb127fac31fba0a4330e87
author Shuming Fan <shumingf@realtek.com> Wed Oct 30 16:55:33 2019 +0800
committer Mark Brown <broonie@kernel.org> Wed Oct 30 14:13:21 2019 +0000
tree 9863c7d9cda0cb717201d4ad62501787ffef59d0
parent e9904ed5e73af4fd00cf4fcf705420a385af45da

ASoC: rt5682: improve the sensitivity of push button

The sensitivity could improve by decreasing the HW debounce time
and reduce the delay time of workequeue.
This patch added a device property for HW debounce time control.
We could change this value to tune the sensitivity of push button.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20191030085533.14299-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/rt5682.h

diff --git a/include/sound/rt5682.h b/include/sound/rt5682.h
index bf2ee75..bc2c317 100644
--- a/include/sound/rt5682.h
+++ b/include/sound/rt5682.h
@@ -31,6 +31,7 @@ struct rt5682_platform_data {
 	enum rt5682_dmic1_data_pin dmic1_data_pin;
 	enum rt5682_dmic1_clk_pin dmic1_clk_pin;
 	enum rt5682_jd_src jd_src;
+	unsigned int btndet_delay;
 };
 
 #endif

sound/soc/codecs/rt5682.c

diff --git a/sound/soc/codecs/rt5682.c b/sound/soc/codecs/rt5682.c
index c50b75c..35dcec1 100644
--- a/sound/soc/codecs/rt5682.c
+++ b/sound/soc/codecs/rt5682.c
@@ -44,6 +44,7 @@ static const struct rt5682_platform_data i2s_default_platform_data = {
 	.dmic1_data_pin = RT5682_DMIC1_DATA_GPIO2,
 	.dmic1_clk_pin = RT5682_DMIC1_CLK_GPIO3,
 	.jd_src = RT5682_JD1,
+	.btndet_delay = 16,
 };
 
 struct rt5682_priv {
@@ -1026,6 +1027,18 @@ static int rt5682_set_jack_detect(struct snd_soc_component *component,
 		regmap_update_bits(rt5682->regmap, RT5682_IRQ_CTRL_2,
 			RT5682_JD1_EN_MASK | RT5682_JD1_POL_MASK,
 			RT5682_JD1_EN | RT5682_JD1_POL_NOR);
+		regmap_update_bits(rt5682->regmap, RT5682_4BTN_IL_CMD_4,
+			0x7f7f, (rt5682->pdata.btndet_delay << 8 |
+			rt5682->pdata.btndet_delay));
+		regmap_update_bits(rt5682->regmap, RT5682_4BTN_IL_CMD_5,
+			0x7f7f, (rt5682->pdata.btndet_delay << 8 |
+			rt5682->pdata.btndet_delay));
+		regmap_update_bits(rt5682->regmap, RT5682_4BTN_IL_CMD_6,
+			0x7f7f, (rt5682->pdata.btndet_delay << 8 |
+			rt5682->pdata.btndet_delay));
+		regmap_update_bits(rt5682->regmap, RT5682_4BTN_IL_CMD_7,
+			0x7f7f, (rt5682->pdata.btndet_delay << 8 |
+			rt5682->pdata.btndet_delay));
 		mod_delayed_work(system_power_efficient_wq,
 			   &rt5682->jack_detect_work, msecs_to_jiffies(250));
 		break;
@@ -2467,6 +2480,8 @@ static int rt5682_parse_dt(struct rt5682_priv *rt5682, struct device *dev)
 		&rt5682->pdata.dmic1_clk_pin);
 	device_property_read_u32(dev, "realtek,jd-src",
 		&rt5682->pdata.jd_src);
+	device_property_read_u32(dev, "realtek,btndet-delay",
+		&rt5682->pdata.btndet_delay);
 
 	rt5682->pdata.ldo1_en = of_get_named_gpio(dev->of_node,
 		"realtek,ldo1-en-gpios", 0);