Re: gpiod: Set pullup for Input Line

[Kent Gibson <warthog618@xxxxxxxxx>]

On Mon, Mar 21, 2022 at 07:33:28PM +0200, Andy Shevchenko wrote:
> On Mon, Mar 21, 2022 at 7:27 PM Hans Kurscheidt <lve0200@xxxxxxxxx> wrote:
> >
> > Hi thanks, that makes hope.
> 
> First of all, please do not top-post.
> 
> > Unfortunately apt-get gpiod on my OrangePi Armbian board gives me
> > version 1.2, while the dev is already at 1.6. I probably have to build
> > it from source.
> >
> > Keeping fingers crossed .
> 
> I don't remember the details of old versions of libgpiod (Bart? Kent?)
> I think it was available even there.
> 

Bias support was added in libgpiod v1.5.
It wasn't even exposed in the uAPI prior to that - it wasn't added until
kernel v5.5.

In this case building the latest stable, 1.6.3, is the way to go.

Cheers,
Kent.

> > Am 21.03.2022 um 17:26 schrieb Andy Shevchenko:
> > > On Mon, Mar 21, 2022 at 1:30 PM Hans Kurscheidt <lve0200@xxxxxxxxx> wrote:
> > >> Despite deep searching, I cannot find any information, if gpiod allow
> > >> specifying pull-ups to input lines and how to do/handle it.
> > > Have you followed this code from libgpiod?
> > > https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/tree/tools/gpioset.c#n44
> 
> 
> -- 
> With Best Regards,
> Andy Shevchenko