Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1504816

Re: [PATCH v2 3/4] ACPI / gpio: Add hogging support

Show all headers | View raw

On Thu, Sep 29, 2016 at 3:39 PM, Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:

> GPIO hogging means that the GPIO controller can "hog" and configure certain
> GPIOs without need for a driver or userspace to do that. This is useful in
> open-connected boards where BIOS cannot possibly know beforehand which
> devices will be connected to the board.
>
> This adds GPIO hogging mechanism to ACPI analogous to Device Tree.
>
> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

Overall nice to have the hogs in ACPI too!

Again here my comment is to break out device_property() and fwnode_*
accessing code to a file shared between ACPI and OF.

If it makes sense.

Because the idea was not to invent those abstractions in order to
just use them with ACPI I hope.

The problem is that some of the code seems to be ACPI-specific,
so if it doesn't work out, I'm also OK to keep it like this.

Yours,
Linus Walleij

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Re: [PATCH v2 3/4] ACPI / gpio: Add hogging support Linus Walleij <linus.walleij@linaro.org> - 2016-10-20 14:10 +0200
  Re: [PATCH v2 3/4] ACPI / gpio: Add hogging support Mika Westerberg <mika.westerberg@linux.intel.com> - 2016-10-20 14:30 +0200

csiph-web