1 files changed, 110 insertions, 0 deletions
diff --git a/arch/mips/vr41xx/common/giu.c b/arch/mips/vr41xx/common/giu.c
new file mode 100644
index 000000000..398c62641
--- /dev/null
+++ b/arch/mips/vr41xx/common/giu.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  NEC VR4100 series GIU platform device.
+ *
+ *  Copyright (C) 2007	Yoichi Yuasa <yuasa@linux-mips.org>
+ */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+
+#include <asm/cpu.h>
+#include <asm/vr41xx/giu.h>
+#include <asm/vr41xx/irq.h>
+
+static struct resource giu_50pins_pullupdown_resource[] __initdata = {
+	{
+		.start	= 0x0b000100,
+		.end	= 0x0b00011f,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= 0x0b0002e0,
+		.end	= 0x0b0002e3,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= GIUINT_IRQ,
+		.end	= GIUINT_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct resource giu_36pins_resource[] __initdata = {
+	{
+		.start	= 0x0f000140,
+		.end	= 0x0f00015f,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= GIUINT_IRQ,
+		.end	= GIUINT_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct resource giu_48pins_resource[] __initdata = {
+	{
+		.start	= 0x0f000140,
+		.end	= 0x0f000167,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= GIUINT_IRQ,
+		.end	= GIUINT_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static int __init vr41xx_giu_add(void)
+{
+	struct platform_device *pdev;
+	struct resource *res;
+	unsigned int num;
+	int retval;
+
+	pdev = platform_device_alloc("GIU", -1);
+	if (!pdev)
+		return -ENOMEM;
+
+	switch (current_cpu_type()) {
+	case CPU_VR4111:
+	case CPU_VR4121:
+		pdev->id = GPIO_50PINS_PULLUPDOWN;
+		res = giu_50pins_pullupdown_resource;
+		num = ARRAY_SIZE(giu_50pins_pullupdown_resource);
+		break;
+	case CPU_VR4122:
+	case CPU_VR4131:
+		pdev->id = GPIO_36PINS;
+		res = giu_36pins_resource;
+		num = ARRAY_SIZE(giu_36pins_resource);
+		break;
+	case CPU_VR4133:
+		pdev->id = GPIO_48PINS_EDGE_SELECT;
+		res = giu_48pins_resource;
+		num = ARRAY_SIZE(giu_48pins_resource);
+		break;
+	default:
+		retval = -ENODEV;
+		goto err_free_device;
+	}
+
+	retval = platform_device_add_resources(pdev, res, num);
+	if (retval)
+		goto err_free_device;
+
+	retval = platform_device_add(pdev);
+	if (retval)
+		goto err_free_device;
+
+	return 0;
+
+err_free_device:
+	platform_device_put(pdev);
+
+	return retval;
+}
+device_initcall(vr41xx_giu_add);