drivers/gpio/gpio-clps711x.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  CLPS711X GPIO driver
10 #include <linux/gpio/driver.h>
15 	struct device_node *np = pdev->dev.of_node;  in clps711x_gpio_probe()
16 	void __iomem *dat, *dir;  in clps711x_gpio_probe()  local
21 		return -ENODEV;  in clps711x_gpio_probe()
23 	id = of_alias_get_id(np, "gpio");  in clps711x_gpio_probe()
25 		return -ENODEV;  in clps711x_gpio_probe()
27 	gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);  in clps711x_gpio_probe()
29 		return -ENOMEM;  in clps711x_gpio_probe()
35 	dir = devm_platform_ioremap_resource(pdev, 1);  in clps711x_gpio_probe()
36 	if (IS_ERR(dir))  in clps711x_gpio_probe()
37 		return PTR_ERR(dir);  in clps711x_gpio_probe()
42 		err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,  in clps711x_gpio_probe()
43 				 NULL, dir, 0);  in clps711x_gpio_probe()
46 		err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,  in clps711x_gpio_probe()
47 				 dir, NULL, 0);  in clps711x_gpio_probe()
57 		gc->ngpio = 3;  in clps711x_gpio_probe()
63 	gc->base = -1;  in clps711x_gpio_probe()
64 	gc->owner = THIS_MODULE;  in clps711x_gpio_probe()
67 	return devm_gpiochip_add_data(&pdev->dev, gc, NULL);  in clps711x_gpio_probe()
71 	{ .compatible = "cirrus,ep7209-gpio" },
78 		.name		= "clps711x-gpio",
87 MODULE_DESCRIPTION("CLPS711X GPIO driver");
88 MODULE_ALIAS("platform:clps711x-gpio");