Messages in this thread | | | From | Andy Shevchenko <> | Date | Wed, 3 Feb 2021 12:10:01 +0200 | Subject | Re: [PATCH] gpio: pca953x: add support for open drain pins on PCAL6524 |
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On Thu, Jan 28, 2021 at 5:38 PM Alban Bedel <alban.bedel@aerq.com> wrote: > > From a quick glance at various datasheet the PCAL6524 seems to be the > only chip in this familly that support setting the drive mode of
chips family
> single pins. Other chips either don't support it at all, or can only > set the drive mode of whole banks, which doesn't map to the GPIO API. > > Add a new flag, PCAL6524, to mark chips that have the extra registers > needed for this feature. Then mark the needed register banks as > readable and writable, here we don't set OUT_CONF as writable, > although it is, as we only need to read it. Finally add a function > that configure the OUT_INDCONF register when the GPIO API set the
configures sets
> drive mode of the pins.
Can we actually convert the driver to be a pin control for the starter? Or split it for some chips to be a pin control, while the rest keeps just being GPIO. I would like to avoid more complex changes in it until it's properly converted to the pin control.
-- With Best Regards, Andy Shevchenko
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