From: Daniel Palmer <dan...@0x0f.com>
>On Mon, 8 Mar 2021 at 15:05, Mark-PK Tsai <mark-pk.t...@mediatek.com> wrote: >> +static int mst_irq_chip_set_type(struct irq_data *data, unsigned int type) > > +{ >> + if (type != IRQ_TYPE_LEVEL_LOW && type != IRQ_TYPE_LEVEL_HIGH) >> + return -EINVAL; >> + > >Does this mean we can't do rising or falling edge interrupts? Yes, the interrupt of mst-intc is either level high or level low. Actually the input signal can be pulse, but it will be converted to level by the latch in mst-intc.