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Commit a180132f authored by Alexander Shiyan's avatar Alexander Shiyan Committed by Olof Johansson
Browse files

GPIO: clps711x: Add DT support 



Add DT support to the CLPS711X GPIO driver.

Signed-off-by: default avatarAlexander Shiyan <shc_work@mail.ru>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parent 55fe14ab

Documentation/devicetree/bindings/gpio/gpio-clps711x.txt

0 → 100644
+28 −0
Original line number Diff line number Diff line 
Cirrus Logic CLPS711X GPIO controller



Required properties:

- compatible: Should be "cirrus,clps711x-gpio"

- reg: Physical base GPIO controller registers location and length.

  There should be two registers, first is DATA register, the second

  is DIRECTION.

- gpio-controller: Marks the device node as a gpio controller.

- #gpio-cells: Should be two. The first cell is the pin number and

  the second cell is used to specify the gpio polarity:

    0 = active high

    1 = active low



Note: Each GPIO port should have an alias correctly numbered in "aliases"

node.



Example:



aliases {

	gpio0 = &porta;

};



porta: gpio@80000000 {

	compatible = "cirrus,clps711x-gpio";

	reg = <0x80000000 0x1>, <0x80000040 0x1>;

	gpio-controller;

	#gpio-cells = <2>;

};

drivers/gpio/gpio-clps711x.c

+11 −3
Original line number Diff line number Diff line
@@ -17,10 +17,11 @@ 


static int clps711x_gpio_probe(struct platform_device *pdev)

{

	struct device_node *np = pdev->dev.of_node;

	void __iomem *dat, *dir;

	struct bgpio_chip *bgc;

	struct resource *res;

	int err, id = pdev->id;

	int err, id = np ? of_alias_get_id(np, "gpio") : pdev->id;



	if ((id < 0) || (id > 4))

		return -ENODEV;
@@ -76,10 +77,17 @@ static int clps711x_gpio_remove(struct platform_device *pdev) 
	return bgpio_remove(bgc);

}



static const struct of_device_id clps711x_gpio_ids[] = {

	{ .compatible = "cirrus,clps711x-gpio" },

	{ }

};

MODULE_DEVICE_TABLE(of, clps711x_gpio_ids);



static struct platform_driver clps711x_gpio_driver = {

	.driver	= {

		.name		= "clps711x-gpio",

		.owner		= THIS_MODULE,

		.of_match_table	= of_match_ptr(clps711x_gpio_ids),

	},

	.probe	= clps711x_gpio_probe,

	.remove	= clps711x_gpio_remove,