Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *  CLPS711X GPIO driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  Copyright (C) 2012,2013 Alexander Shiyan <shc_work@mail.ru>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/gpio/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static int clps711x_gpio_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	struct device_node *np = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	void __iomem *dat, *dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	struct gpio_chip *gc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	int err, id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	if (!np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	id = of_alias_get_id(np, "gpio");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	if ((id < 0) || (id > 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	if (!gc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	dat = devm_platform_ioremap_resource(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	if (IS_ERR(dat))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		return PTR_ERR(dat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	dir = devm_platform_ioremap_resource(pdev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	if (IS_ERR(dir))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		return PTR_ERR(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	switch (id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		/* PORTD is inverted logic for direction register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 				 NULL, dir, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 				 dir, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	switch (id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		/* PORTE is 3 lines only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		gc->ngpio = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	gc->base = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	gc->owner = THIS_MODULE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	platform_set_drvdata(pdev, gc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	return devm_gpiochip_add_data(&pdev->dev, gc, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static const struct of_device_id __maybe_unused clps711x_gpio_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	{ .compatible = "cirrus,ep7209-gpio" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) MODULE_DEVICE_TABLE(of, clps711x_gpio_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static struct platform_driver clps711x_gpio_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	.driver	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 		.name		= "clps711x-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 		.of_match_table	= of_match_ptr(clps711x_gpio_ids),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	.probe	= clps711x_gpio_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) module_platform_driver(clps711x_gpio_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) MODULE_DESCRIPTION("CLPS711X GPIO driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) MODULE_ALIAS("platform:clps711x-gpio");