Re: [PATCH v4 7/7] mmc: host: renesas_sdhi_core: support selecting an optional mux

[Josua Mayer <josua@solid-run.com>]

Hi Wolfram,

On 14/01/2026 13:49, Wolfram Sang wrote:
> Hi Josua,
>
> thanks for your work and kudos for striving for a generic solution. It
> seems worthwhile to me to add the helpers. I have questions, though:
>
>> +	priv->mux_state = devm_mux_state_get_optional_selected(&pdev->dev, NULL);
> The minor nit (which may be bike-shedding): Maybe the function name
> could be '*_select' instead of '*_selected'. To make more explicit that
> this function is actively changing the selection and not passively
> retrieving the current state?
I have no strong opinion on select vs. selected.
I merely followed the devm_clk_get_enabled/selected.
>
> The bigger thing is that with devm_* I had the expectation that
> deselection is also handled automatically...
>
>> +edselmux:
>> +	if (priv->mux_state)
>> +		mux_state_deselect(priv->mux_state);
> ... so I was a bit surprised to see this manual cleanup. Has it been
> discussed if that deselection can also be in the helpers?
I have not considered adding this, and was careful
not to imply it in the function descriptions.

At the time I felt adding helpers was growing in complexity too fast,
and I am not very familair with devres.

I agree that the general expectation is devm functions are fully managed,
in this case including deselect.

>
> Happy hacking,
>
>     Wolfram
>
>
sincerely
Josua Mayer