Re: [PATCH v4 2/3] gpio: ch341: add MFD cell driver for the CH341

[Linus Walleij]

Hi Frank,

thanks for your patch!

I see you already got a bunch of homework from Andy, I will do a more
thorough review on the next iteration, just a few things:

On Mon, Mar 21, 2022 at 5:21 AM frank zago <frank@xxxxxxxx> wrote:

> The GPIO interface offers 16 GPIOs. 6 are read/write, and 10 are
> read-only.
>
> Signed-off-by: frank zago <frank@xxxxxxxx>
(...)
> +config GPIO_CH341
> +       tristate "CH341 USB adapter in GPIO/I2C/SPI mode"
> +       depends on MFD_CH341

I would add
default MFD_CD341

This way it gets selected automatically if the MFD module gets
selected. (I suspect you should do the same with the I2C module).

> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/mfd/core.h>
> +#include <linux/gpio.h>

Use <linux/gpio/driver.h>

Yours,
Linus Walleij