pa_gpio 58 include/sound/simple_card_utils.h struct gpio_desc *pa_gpio; pa_gpio 36 sound/soc/generic/audio-graph-card.c gpiod_set_value_cansleep(priv->pa_gpio, 1); pa_gpio 39 sound/soc/generic/audio-graph-card.c gpiod_set_value_cansleep(priv->pa_gpio, 0); pa_gpio 655 sound/soc/generic/audio-graph-card.c priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); pa_gpio 656 sound/soc/generic/audio-graph-card.c if (IS_ERR(priv->pa_gpio)) { pa_gpio 657 sound/soc/generic/audio-graph-card.c ret = PTR_ERR(priv->pa_gpio);