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59 lines
1.3 KiB
59 lines
1.3 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* arch/arm/plat-iop/gpio.c |
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* GPIO handling for Intel IOP3xx processors. |
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* |
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* Copyright (C) 2006 Lennert Buytenhek <[email protected]> |
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*/ |
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#include <linux/err.h> |
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#include <linux/module.h> |
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#include <linux/gpio/driver.h> |
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#include <linux/platform_device.h> |
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#define IOP3XX_GPOE 0x0000 |
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#define IOP3XX_GPID 0x0004 |
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#define IOP3XX_GPOD 0x0008 |
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static int iop3xx_gpio_probe(struct platform_device *pdev) |
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{ |
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struct gpio_chip *gc; |
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void __iomem *base; |
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int err; |
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gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL); |
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if (!gc) |
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return -ENOMEM; |
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base = devm_platform_ioremap_resource(pdev, 0); |
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if (IS_ERR(base)) |
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return PTR_ERR(base); |
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err = bgpio_init(gc, &pdev->dev, 1, base + IOP3XX_GPID, |
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base + IOP3XX_GPOD, NULL, NULL, base + IOP3XX_GPOE, 0); |
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if (err) |
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return err; |
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gc->base = 0; |
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gc->owner = THIS_MODULE; |
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gc->label = "gpio-iop"; |
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return devm_gpiochip_add_data(&pdev->dev, gc, NULL); |
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} |
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static struct platform_driver iop3xx_gpio_driver = { |
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.driver = { |
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.name = "gpio-iop", |
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}, |
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.probe = iop3xx_gpio_probe, |
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}; |
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static int __init iop3xx_gpio_init(void) |
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{ |
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return platform_driver_register(&iop3xx_gpio_driver); |
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} |
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arch_initcall(iop3xx_gpio_init); |
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MODULE_DESCRIPTION("GPIO handling for Intel IOP3xx processors"); |
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MODULE_AUTHOR("Lennert Buytenhek <[email protected]>"); |
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MODULE_LICENSE("GPL");
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