SND_CLICK
[SND_CLICK] = "Click", [SND_BELL] = "Bell",
case SND_CLICK:
lkkbd_toggle_keyclick(lk, test_bit(SND_CLICK, lk->dev->snd));
__set_bit(SND_CLICK, input_dev->sndbit);
case SND_CLICK:
SUNKBD_CMD_NOCLICK - !!test_bit(SND_CLICK, sunkbd->dev->snd));
input_dev->sndbit[0] = BIT_MASK(SND_CLICK) | BIT_MASK(SND_BELL);