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gpio: loongson1: Add DT support 

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

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Keguang Zhang 2023-03-15 19:06:49 +08:00 committed by Bartosz Golaszewski
parent 722cfe4ffa
commit 9bc167e27c
1 changed files with 16 additions and 3 deletions
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19
drivers/gpio/gpio-loongson1.c
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@ -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,
},
};