Commit 9bc167e2 authored by Keguang Zhang's avatar Keguang Zhang Committed by Bartosz Golaszewski
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gpio: loongson1: Add DT support 



This patch adds DT support for Loongson-1 GPIO driver.

Signed-off-by: default avatarKeguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent 722cfe4f

drivers/gpio/gpio-loongson1.c

+16 −3
Original line number Diff line number Diff line
@@ -68,25 +68,38 @@ static int ls1x_gpio_probe(struct platform_device *pdev) 
	ls1x_gc->gc.owner = THIS_MODULE;

	ls1x_gc->gc.request = ls1x_gpio_request;

	ls1x_gc->gc.free = ls1x_gpio_free;

	ls1x_gc->gc.base = pdev->id * 32;

	/*

	 * Clear ngpio to let gpiolib get the correct number

	 * by reading ngpios property

	 */

	ls1x_gc->gc.ngpio = 0;



	ret = devm_gpiochip_add_data(dev, &ls1x_gc->gc, ls1x_gc);

	if (ret)

		goto err;



	platform_set_drvdata(pdev, ls1x_gc);

	dev_info(dev, "Loongson1 GPIO driver registered\n");



	dev_info(dev, "GPIO controller registered with %d pins\n",

		 ls1x_gc->gc.ngpio);



	return 0;

err:

	dev_err(dev, "failed to register GPIO device\n");

	dev_err(dev, "failed to register GPIO controller\n");

	return ret;

}



static const struct of_device_id ls1x_gpio_dt_ids[] = {

	{ .compatible = "loongson,ls1x-gpio" },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, ls1x_gpio_dt_ids);



static struct platform_driver ls1x_gpio_driver = {

	.probe	= ls1x_gpio_probe,

	.driver	= {

		.name	= "ls1x-gpio",

		.of_match_table = ls1x_gpio_dt_ids,

	},

};