On Fri, Jan 27, 2017 at 5:15 PM, Alexandre TORGUE
[off-list ref] wrote:

Use device tree entries to declare gpio range. It will allow to use
no contiguous gpio bank and holes inside a bank.

Signed-off-by: Alexandre TORGUE <redacted>

(...)

+       of_property_read_string(np, "st,bank-name", &bank->gpio_chip.label);
+
+       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);
+       }

Why are you doing this?

There is already code in drivers/gpio/gpiolib-of.c to pick ranges
from the device tree and add when you're adding the GPIO chips.

Please use that or figure out what is needed to make it work for
you instead of reimplementing it.

Yours,
Linus Walleij