SRQ
if (gpiod_get_value(SRQ) == 0)
if (bb_get_irq(board, NAME "_SRQ", SRQ, &priv->irq_SRQ, bb_SRQ_interrupt, NULL,
gpiod_get_value(SRQ)
int val = gpiod_get_value(SRQ);
gpiod_direction_input(SRQ);
if (gpiod_get_value(SRQ)) /* SRQ asserted low */