On Thu, Sep 15, 2016 at 5:52 PM, Mika Westerberg
[off-list ref] wrote:

When using GPIO irqchip helpers to setup irqchip for a gpiolib based
driver, it is not possible to select which GPIOs to add to the IRQ domain.
Instead it just adds all GPIOs which is not always desired. For example
there might be GPIOs that for some reason just cannot be used as interrupts
at all.

To make this possible we add valid_mask to each gpio_chip and by default
assume all GPIOs can be used as interrupts. Drivers can then tune this
using clear_bit() or similar before they call gpiochip_irqchip_add().

Suggested-by: Linus Walleij <redacted>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

Awesome, nice infrastructure.
Will apply once tglx and Marc's comments are fixed.

Yours,
Linus Walleij