v4.19.13 snapshot.
diff --git a/drivers/gpio/gpio-iop.c b/drivers/gpio/gpio-iop.c
new file mode 100644
index 0000000..8d62db4
--- /dev/null
+++ b/drivers/gpio/gpio-iop.c
@@ -0,0 +1,64 @@
+/*
+ * arch/arm/plat-iop/gpio.c
+ * GPIO handling for Intel IOP3xx processors.
+ *
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#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 resource *res;
+ struct gpio_chip *gc;
+ void __iomem *base;
+ int err;
+
+ gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
+ if (!gc)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ 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;
+
+ 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");