[alsa-devel] [PATCH] ASoC: tlv320aic31xx: place codec into reset state initially

[Jyri Sarha]

On 08/05/2014 01:13 AM, Peter S. Housel wrote:
> Previously the driver would only place the TLV320AIC31XX into reset
> using the gpio reset line when at least one of the power supply
> regulators was disabled, so that if these supplies were always enabled
> no reset would ever occur. This change resets the codec state at probe
> time so that the initial register cache values are correct.
>
> Signed-off-by: Peter S. Housel <housel at acm.org>
> ---
>   sound/soc/codecs/tlv320aic31xx.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/soc/codecs/tlv320aic31xx.c b/sound/soc/codecs/tlv320aic31xx.c
> index 0f64c78..89a4daf 100644
> --- a/sound/soc/codecs/tlv320aic31xx.c
> +++ b/sound/soc/codecs/tlv320aic31xx.c
> @@ -1194,7 +1194,7 @@ static int aic31xx_device_init(struct aic31xx_priv *aic31xx)
>   	if (aic31xx->pdata.gpio_reset) {
>   		ret = devm_gpio_request_one(aic31xx->dev,
>   					    aic31xx->pdata.gpio_reset,
> -					    GPIOF_OUT_INIT_HIGH,
> +					    GPIOF_OUT_INIT_LOW,
>   					    "aic31xx-reset-pin");
>   		if (ret < 0) {
>   			dev_err(aic31xx->dev, "not able to acquire gpio\n");
>

Oops, aic3111 and friends indeed have an active low reset line. The line 
was not behind a gpio on my board.

Acked-by: Jyri Sarha <jsarha at ti.com>