[alsa-devel] [PATCH 1/3] ASoC: rt5682: improve the sensitivity of push button

[shumingf at realtek.com]

From: Shuming Fan <shumingf at realtek.com>

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 at realtek.com>
---
 include/sound/rt5682.h    |  1 +
 sound/soc/codecs/rt5682.c | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/include/sound/rt5682.h b/include/sound/rt5682.h
index bf2ee75aabb1..bc2c31734df1 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
diff --git a/sound/soc/codecs/rt5682.c b/sound/soc/codecs/rt5682.c
index c50b75ce82e0..35dcec135c8a 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);
-- 
2.23.0