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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>
This commit is contained in:
Anatol Pomozov 2015-10-29 15:31:59 -07:00 committed by Mark Brown
parent 8005c49d9a
commit cdab0d4ecc
2 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/sound/rt5677.txt
View File

@ -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

8
sound/soc/codecs/rt5677.c
View File

@ -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);