1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-iop.c b/drivers/gpio/gpio-iop.c
new file mode 100644
index 000000000..7390b5ca0
--- /dev/null
+++ b/drivers/gpio/gpio-iop.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * arch/arm/plat-iop/gpio.c
+ * GPIO handling for Intel IOP3xx processors.
+ *
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/gpio/driver.h>
+#include <linux/platform_device.h>
+
+#define IOP3XX_GPOE	0x0000
+#define IOP3XX_GPID	0x0004
+#define IOP3XX_GPOD	0x0008
+
+static int iop3xx_gpio_probe(struct platform_device *pdev)
+{
+	struct gpio_chip *gc;
+	void __iomem *base;
+	int err;
+
+	gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
+	if (!gc)
+		return -ENOMEM;
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	err = bgpio_init(gc, &pdev->dev, 1, base + IOP3XX_GPID,
+			 base + IOP3XX_GPOD, NULL, NULL, base + IOP3XX_GPOE, 0);
+	if (err)
+		return err;
+
+	gc->base = 0;
+	gc->owner = THIS_MODULE;
+	gc->label = "gpio-iop";
+
+	return devm_gpiochip_add_data(&pdev->dev, gc, NULL);
+}
+
+static struct platform_driver iop3xx_gpio_driver = {
+	.driver = {
+		.name = "gpio-iop",
+	},
+	.probe = iop3xx_gpio_probe,
+};
+
+static int __init iop3xx_gpio_init(void)
+{
+	return platform_driver_register(&iop3xx_gpio_driver);
+}
+arch_initcall(iop3xx_gpio_init);
+
+MODULE_DESCRIPTION("GPIO handling for Intel IOP3xx processors");
+MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>");
+MODULE_LICENSE("GPL");