linux-kernel - Re: [PATCH] gpio: add support for FTDI's MPSSE as GPIO

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Message-ID: <CACRpkdac2=wXA5OWpHku2ZoqiqPPo-pscGxTit-Jm-PicPwAMA@mail.gmail.com>
Date: Fri, 11 Oct 2024 13:59:31 +0200
From: Linus Walleij <linus.walleij@...aro.org>
To: Mary Strodl <mstrodl@...edom.csh.rit.edu>
Cc: Mary Strodl <mstrodl@....rit.edu>, linux-kernel@...r.kernel.org, brgl@...ev.pl, 
	linux-gpio@...r.kernel.org
Subject: Re: [PATCH] gpio: add support for FTDI's MPSSE as GPIO

On Thu, Sep 5, 2024 at 5:18 PM Mary Strodl <mstrodl@...edom.csh.rit.edu> wrote:
> On Thu, Aug 29, 2024 at 10:11:13AM -0400, Mary Strodl wrote:

> > > > +       u8 gpio_outputs[2];          /* Output states for GPIOs [L, H] */
> > > > +       u8 gpio_dir[2];              /* Directions for GPIOs [L, H] */
> > >
> > > Caching states of lines is a bit regmap territory. Have you looked into
> > > just using regmap?
> >
> > Do you mean gpio_regmap or using regmap directly? I'm not sure that gpio_regmap
> > will do what I want because I need to provide an irq_chip (and I don't see a way
> > to "break the glass" and access the gpio_chip directly)
>
> I realize you're busy, but wanted to make sure you saw this question in my previous
> email. I've got a patch ready to go that addresses all your feedback except this point.

Actually the mail was caught in the spam folder, I don't know why.

I'll whitelist your mail address so it doesn't happen again.

Yours,
Linus Walleij