Re: [PATCH 3/7] pinctrl: pinconf-generic: Allow driver to specify DT params

From: Ivan T. Ivanov
Date: Tue Nov 18 2014 - 03:50:05 EST

On Tue, 2014-11-11 at 15:53 +0100, Linus Walleij wrote:
> On Mon, Nov 3, 2014 at 8:05 PM, Soren Brinkmann
> brinkmann@xxxxxxxxxx> wrote:
> > Additionally to the generic DT parameters, allow drivers to provide
> > driver-specific DT parameters to be used with the generic parser
> > infrastructure.
> >
> > Signed-off-by: Soren Brinkmann brinkmann@xxxxxxxxxx>
> I like the looks of this, but the patch description is a bit terse.
> I'd like it to describe some of the refactorings being done
> to the intrinsics, because I have a hard time following the patch.
> First please rebase onto the "devel" branch in the pin control
> tree, and notice that drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
> which is merged there is actually doing this already:
> for_each_child_of_node(np_config, np) {
> ret = pinconf_generic_dt_subnode_to_map(pctldev, np, map,
> &reserv, nmaps, type);
> if (ret)
> break;
> ret = pmic_gpio_dt_subnode_to_map(pctldev, np, map, &reserv,
> nmaps, type);
> if (ret)
> break;
> }
> So it should be patched to illustrate the point of this code.

I like the idea, but have issues with implementations :-).

It is supposed that additional parameters are not generic,
otherwise they will be part of enum pin_config_param, right?

Probably it will be better if clients could pass array with
driver specific dt bindings to pinconf_generic_dt_node_to_map()?

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