Hi Linus,
On 02/03/2017 08:51 AM, Linus Walleij wrote:
> Your child nodes I guess will be instatiated as devices as well.
>
> These devices will have the NBUS driver as .parent in their
> struct device I guess. Else the design of this bus is tilted.
>
> If the NBUS driver use dev_set_drvdata(dev, state_container_cookie)
> the children can use dev_get_drvdata(dev->parent); to get a pointer to
> the same cookie.
>
> The subdrivers don't even need to know the members of the state
> container as long as you're just passing a pointer to it. It's
> enough if you forward-declare it as a "pointer to some struct":
>
> struct foo;
>
> {
> struct foo *fooptr = dev_get_drvdata(dev->parent);
> write(fooptr, 0x10);
>
> etc
Thanks a lot, this is perfect!
Best Regards,
Sebastien.
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
