linux-kernel - Re: [PATCH 2/8] pinctrl: stm32: use gpio-ranges to declare bank range

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Date:   Wed, 1 Feb 2017 16:01:26 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Alexandre Torgue <alexandre.torgue@...com>
Cc:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Russell King <linux@...linux.org.uk>,
        Olof Johansson <olof@...om.net>,
        Patrice Chotard <patrice.chotard@...com>,
        Lee Jones <lee.jones@...aro.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/8] pinctrl: stm32: use gpio-ranges to declare bank range

On Mon, Jan 30, 2017 at 5:29 PM, Alexandre Torgue
<alexandre.torgue@...com> wrote:
> On 01/30/2017 04:19 PM, Linus Walleij wrote:

>>> +       if (!of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0,
>>> &args))
>>> +               bank_nr = args.args[1] / STM32_GPIO_PINS_PER_BANK;
>>> +       else {
>>> +               range->name = bank->gpio_chip.label;
>>> +               range->id = bank_nr;
>>> +               range->pin_base = range->id * STM32_GPIO_PINS_PER_BANK;
>>> +               range->base = range->id * STM32_GPIO_PINS_PER_BANK;
>>> +               range->npins = npins;
>>> +               range->gc = &bank->gpio_chip;
>>> +               pinctrl_add_gpio_range(pctl->pctl_dev,
>>> +                                      &pctl->banks[bank_nr].range);
>>> +       }
>
>
> I Keep the old way to get range in order to keep compatibility with older
> device tree (if no gpio ranges are defined).

Aha I understand. Sorry for my stupidity.

Go ahead with this!

Yours,
Linus Walleij