[linux-sunxi] Re: [PATCH] input: axp20x-pek: Fix reporting button state as inverted

Carlo Caione carlo at caione.org
Wed Jun 24 02:19:39 PDT 2015

On Wed, Jun 24, 2015 at 3:42 AM, Chen-Yu Tsai <wens at csie.org> wrote:
> On Tue, Jun 23, 2015 at 5:30 AM, Dmitry Torokhov
> <dmitry.torokhov at gmail.com> wrote:
>> On Sun, Jun 14, 2015 at 12:42:21PM +0200, Hans de Goede wrote:
>>> Currently we are reporting the button state as inverted on all boards with
>>> an axp209 pmic, tested on a ba10-tvbox, bananapi, bananapro, cubietruck and
>>> utoo-p66 tablet.
>>> The axp209 datasheet clearly states that the power button must be connected
>>> between the PWRON key and ground. Which means that on a press we will get
>>> a falling edge (dbf) irq not a rising one, and likewise on release we will
>>> get a rising edge (dbr) irq, not a falling one.
>>> This commit swaps the check for the 2 irqs fixing the inverted reporting of
>>> the power button state.
>>> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
>> Carlo, Chen-Yu, could you please give this patch a spin and let us know
>> if it works on your boards?
> I've not actually tested this patch on my boards, but I can confirm that
> the original code had the state inverted, by checking /proc/interrupts
> counters, before and after releasing the power button.
> Acked-by: Chen-Yu Tsai <wens at csie.org>

Same here (I don't have the board anymore)

Acked-by: Carlo Caione <carlo at caione.org>

Carlo Caione

More information about the linux-arm-kernel mailing list