On 10/28/14 4:15, Mika Westerberg wrote:
> acpi_dev_add_driver_gpios() makes it possible to set up mapping between
> properties and ACPI GpioIo resources in a driver, so we can take index
> parameter in acpi_find_gpio() into use with _DSD device properties now.
>
> This index can be used to select a GPIO from a property with multiple
> GPIOs:
>
> Package () {
> "data-gpios",
> Package () {
> \_SB.GPIO, 0, 0, 0,
> \_SB.GPIO, 1, 0, 0,
> \_SB.GPIO, 2, 0, 1,
> }
> }
>
> In order to retrieve the last GPIO from a driver we can simply do:
>
> desc = devm_gpiod_get_index(dev, "data", 2);
>
> and so on.
>
> Signed-off-by: Mika Westerberg <[email protected]>
Nice, that was a gap that had been gnawing at me. Thanks Mika :-)
Acked-by: Darren Hart <[email protected]>
--
Darren Hart
Intel Open Source Technology Center
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