- name : ASoC: rt5677: use 'active low' logic for reset pin" to the asoc tree In-Reply-To: 1446157919-27151-1-git-send-email-anatol.pomozov@gmail.com

The patch

- filename : ASoC-rt5677-use-active-low-logic-for-reset-pin.patch - name : ASoC: rt5677: use 'active low' logic for reset pin

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

From 7f7d276ef2f76f781d9867653d22ee96fc86edf2 Mon Sep 17 00:00:00 2001

From: Anatol Pomozov anatol.pomozov@gmail.com Date: Thu, 29 Oct 2015 15:31:59 -0700 Subject: [PATCH] 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 --- Documentation/devicetree/bindings/sound/rt5677.txt | 2 +- sound/soc/codecs/rt5677.c | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/rt5677.txt b/Documentation/devicetree/bindings/sound/rt5677.txt index f070789..1b3c13d 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 b4cd7e3..f73fd12 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);