4 * Copyright (C) 2012,2013 Alexander Shiyan <shc_work@mail.ru>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/err.h>
13 #include <linux/module.h>
14 #include <linux/gpio/driver.h>
15 #include <linux/platform_device.h>
17 static int clps711x_gpio_probe(struct platform_device *pdev)
19 struct device_node *np = pdev->dev.of_node;
20 void __iomem *dat, *dir;
28 id = of_alias_get_id(np, "gpio");
29 if ((id < 0) || (id > 4))
32 gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
36 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
37 dat = devm_ioremap_resource(&pdev->dev, res);
41 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
42 dir = devm_ioremap_resource(&pdev->dev, res);
48 /* PORTD is inverted logic for direction register */
49 err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
53 err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
63 /* PORTE is 3 lines only */
71 gc->owner = THIS_MODULE;
72 platform_set_drvdata(pdev, gc);
74 return devm_gpiochip_add_data(&pdev->dev, gc, NULL);
77 static const struct of_device_id __maybe_unused clps711x_gpio_ids[] = {
78 { .compatible = "cirrus,ep7209-gpio" },
81 MODULE_DEVICE_TABLE(of, clps711x_gpio_ids);
83 static struct platform_driver clps711x_gpio_driver = {
85 .name = "clps711x-gpio",
86 .of_match_table = of_match_ptr(clps711x_gpio_ids),
88 .probe = clps711x_gpio_probe,
90 module_platform_driver(clps711x_gpio_driver);
92 MODULE_LICENSE("GPL");
93 MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
94 MODULE_DESCRIPTION("CLPS711X GPIO driver");
95 MODULE_ALIAS("platform:clps711x-gpio");