Messages in this thread | | | From | Andy Shevchenko <> | Date | Wed, 28 Apr 2021 14:07:10 +0300 | Subject | Re: [PATCH v4 1/2] gpio: Add support for IDT 79RC3243x GPIO controller |
| |
On Wed, Apr 28, 2021 at 1:51 AM Michael Walle <michael@walle.cc> wrote: > Am 2021-04-26 12:29, schrieb Andy Shevchenko: > > On Mon, Apr 26, 2021 at 12:55 PM Thomas Bogendoerfer > > <tsbogend@alpha.franken.de> wrote: > > > > 2) there is gpio-regmap generic code, that may be worth > > considering. > > This driver uses memory mapped registers. While that is > also possible with gpio-regmap, there is one drawback: > it assumes gpiochip->can_sleep = true for now, see [1]. > Unfortunately, there is no easy way to ask the regmap > if its mmio/fastio.
I don't see how it is an impediment. Prerequisite patch?
> [1] > https://elixir.bootlin.com/linux/v5.12/source/drivers/gpio/gpio-regmap.c#L257
-- With Best Regards, Andy Shevchenko
| |