Hi Alan, this is starting to look good. I's like an ACK from a DT
maintainer on the bindings but can't see anything really controversial
about them.
On Thu, Feb 6, 2014 at 11:06 PM, Alan Tull <delicious.quinoa@xxxxxxxxx> wrote:
> +static int dwapb_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
> +{
> + struct bgpio_chip *bgc = to_bgpio_chip(gc);
> + struct dwapb_gpio_port *port = container_of(bgc, struct
> + dwapb_gpio_port, bgc);
> + struct dwapb_gpio *gpio = port->gpio;
> +
> + return irq_create_mapping(gpio->domain, offset);
> +}
I think you want to call irq_find_mapping() here. irq_create_mapping()
should be called for all valid IRQs on probe() instead.
> + ct = irq_gc->chip_types;
> + ct->chip.irq_ack = irq_gc_ack_set_bit;
> + ct->chip.irq_mask = irq_gc_mask_set_bit;
> + ct->chip.irq_unmask = irq_gc_mask_clr_bit;
> + ct->chip.irq_set_type = dwapb_irq_set_type;
> + ct->chip.irq_enable = dwapb_irq_enable;
> + ct->chip.irq_disable = dwapb_irq_disable;
> + ct->regs.ack = GPIO_PORTA_EOI;
> + ct->regs.mask = GPIO_INTMASK;
Please add .startup() and .shutdown() callbacks marking the
respective lines as IRQs, compare to recent patches in the
GPIO subsystem such as this:
http://marc.info/?l=linux-gpio&m=138546100215235&w=2
You probably want to call irq_create_mapping() for each
valid IRQ after registering the chip in this function.
Yours,
Linus Walleij
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