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Commit 351c2163 authored by Linus Walleij's avatar Linus Walleij
Browse files

pinctrl: coh901: add device tree support 



This makes it possible to probe the COH901 pinctrl driver from
the device tree, and assigned the device tree node in the
gpio_chip so we can look up cross-references from the device
tree. Start grabbing the per-port (bank) IRQs by index instead
of by name so we don't have to look up the IRQs by name going
forward.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 21a035db

Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt

0 → 100644
+7 −0
Original line number Diff line number Diff line 
ST-Ericsson COH 901 571/3 GPIO controller



Required properties:

- compatible: Compatible property value should be "stericsson,gpio-coh901"

- reg: Physical base address of the controller and length of memory mapped

  region.

- interrupts: the 0...n interrupts assigned to the different GPIO ports/banks.

drivers/pinctrl/pinctrl-coh901.c

+10 −2
Original line number Diff line number Diff line
@@ -773,8 +773,7 @@ static int __init u300_gpio_probe(struct platform_device *pdev) 
		port->number = portno;

		port->gpio = gpio;



		port->irq = platform_get_irq_byname(pdev,

						    port->name);

		port->irq = platform_get_irq(pdev, portno);



		dev_dbg(gpio->dev, "register IRQ %d for port %s\n", port->irq,

			port->name);
@@ -811,6 +810,9 @@ static int __init u300_gpio_probe(struct platform_device *pdev) 
	}

	dev_dbg(gpio->dev, "initialized %d GPIO ports\n", portno);



#ifdef CONFIG_OF_GPIO

	gpio->chip.of_node = pdev->dev.of_node;

#endif

	err = gpiochip_add(&gpio->chip);

	if (err) {

		dev_err(gpio->dev, "unable to add gpiochip: %d\n", err);
@@ -864,9 +866,15 @@ static int __exit u300_gpio_remove(struct platform_device *pdev) 
	return 0;

}



static const struct of_device_id u300_gpio_match[] = {

	{ .compatible = "stericsson,gpio-coh901" },

	{},

};



static struct platform_driver u300_gpio_driver = {

	.driver		= {

		.name	= "u300-gpio",

		.of_match_table = u300_gpio_match,

	},

	.remove		= __exit_p(u300_gpio_remove),

};