ftr_gpio_set_amp 190 sound/aoa/core/gpio-feature.c ftr_gpio_set_amp(rt, 0); ftr_gpio_set_amp 204 sound/aoa/core/gpio-feature.c ftr_gpio_set_amp(rt, (s>>1)&1); ftr_gpio_set_amp 414 sound/aoa/core/gpio-feature.c .set_speakers = ftr_gpio_set_amp,