From: Anatol Pomozov <anatol.pomozov@gmail.com>
Date: Thu, 29 Oct 2015 22:31:59 +0000 (-0700)
Subject: ASoC: rt5677: use 'active low' logic for reset pin
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cdab0d4ecc1a890aece7102c2074bf73175b9935;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ASoC: rt5677: use 'active low' logic for reset pin

According to the datasheet RESET is active low pin, i.e. system goes to
reset state when pin signal is low.

The previous implementeation was assuming the pin is configured as
'active high' in DTS. Changle the gpio handling code and DTS configuration
to 'active low'.

Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/Documentation/devicetree/bindings/sound/rt5677.txt b/Documentation/devicetree/bindings/sound/rt5677.txt
index f07078997f87..1b3c13d206ff 100644
--- a/Documentation/devicetree/bindings/sound/rt5677.txt
+++ b/Documentation/devicetree/bindings/sound/rt5677.txt
@@ -18,7 +18,7 @@ Required properties:
 Optional properties:
 
 - realtek,pow-ldo2-gpio : The GPIO that controls the CODEC's POW_LDO2 pin.
-- realtek,reset-gpio : The GPIO that controls the CODEC's RESET pin.
+- realtek,reset-gpio : The GPIO that controls the CODEC's RESET pin. Active low.
 
 - realtek,in1-differential
 - realtek,in2-differential
diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index b4cd7e3bf5f8..f73fd125e49c 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -4766,7 +4766,7 @@ static int rt5677_remove(struct snd_soc_codec *codec)
 
 	regmap_write(rt5677->regmap, RT5677_RESET, 0x10ec);
 	gpiod_set_value_cansleep(rt5677->pow_ldo2, 0);
-	gpiod_set_value_cansleep(rt5677->reset_pin, 0);
+	gpiod_set_value_cansleep(rt5677->reset_pin, 1);
 
 	return 0;
 }
@@ -4781,7 +4781,7 @@ static int rt5677_suspend(struct snd_soc_codec *codec)
 		regcache_mark_dirty(rt5677->regmap);
 
 		gpiod_set_value_cansleep(rt5677->pow_ldo2, 0);
-		gpiod_set_value_cansleep(rt5677->reset_pin, 0);
+		gpiod_set_value_cansleep(rt5677->reset_pin, 1);
 	}
 
 	return 0;
@@ -4793,7 +4793,7 @@ static int rt5677_resume(struct snd_soc_codec *codec)
 
 	if (!rt5677->dsp_vad_en) {
 		gpiod_set_value_cansleep(rt5677->pow_ldo2, 1);
-		gpiod_set_value_cansleep(rt5677->reset_pin, 1);
+		gpiod_set_value_cansleep(rt5677->reset_pin, 0);
 		if (rt5677->pow_ldo2 || rt5677->reset_pin)
 			msleep(10);
 
@@ -5138,7 +5138,7 @@ static int rt5677_i2c_probe(struct i2c_client *i2c,
 		return ret;
 	}
 	rt5677->reset_pin = devm_gpiod_get_optional(&i2c->dev,
-			"realtek,reset", GPIOD_OUT_HIGH);
+			"realtek,reset", GPIOD_OUT_LOW);
 	if (IS_ERR(rt5677->reset_pin)) {
 		ret = PTR_ERR(rt5677->reset_pin);
 		dev_err(&i2c->dev, "Failed to request RESET: %d\n", ret);