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Commit a0d72094 authored by Maxime Ripard's avatar Maxime Ripard Committed by Linus Walleij
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pinctrl: sunxi: add of_xlate function 



Since the pin controller of sunxi chips is represented as a
single bank in the driver.

Since this is neither convenient nor represented that way in the
datasheets, define a custom of_xlate function with the layout
<bank pin flag>

Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 581981be

drivers/pinctrl/pinctrl-sunxi.c

+20 −0
Original line number Diff line number Diff line
@@ -1261,6 +1261,24 @@ static void sunxi_pinctrl_gpio_set(struct gpio_chip *chip, 
	writel((value & DATA_PINS_MASK) << index, pctl->membase + reg);

}



static int sunxi_pinctrl_gpio_of_xlate(struct gpio_chip *gc,

				const struct of_phandle_args *gpiospec,

				u32 *flags)

{

	int pin, base;



	base = PINS_PER_BANK * gpiospec->args[0];

	pin = base + gpiospec->args[1];



	if (pin > (gc->base + gc->ngpio))

		return -EINVAL;



	if (flags)

		*flags = gpiospec->args[2];



	return pin;

}



static struct gpio_chip sunxi_pinctrl_gpio_chip = {

	.owner			= THIS_MODULE,

	.request		= sunxi_pinctrl_gpio_request,
@@ -1269,6 +1287,8 @@ static struct gpio_chip sunxi_pinctrl_gpio_chip = { 
	.direction_output	= sunxi_pinctrl_gpio_direction_output,

	.get			= sunxi_pinctrl_gpio_get,

	.set			= sunxi_pinctrl_gpio_set,

	.of_xlate		= sunxi_pinctrl_gpio_of_xlate,

	.of_gpio_n_cells	= 3,

	.can_sleep		= 0,

};