Wp76xx gpio irq

what are gpio irq capabilities in wp76xx
( for GPIOs 0-79)

which options are supported:
IRQ_TYPE_EDGE_RISING - rising edge triggered
IRQ_TYPE_EDGE_FALLING - falling edge triggered
IRQ_TYPE_EDGE_BOTH - rising and falling edge triggered
IRQ_TYPE_LEVEL_HIGH - high level triggered
IRQ_TYPE_LEVEL_LOW - low level triggered

BTW: is there any documentation describing such things ?