1 files changed, 142 insertions, 0 deletions
diff --git a/arch/mips/vr41xx/common/siu.c b/arch/mips/vr41xx/common/siu.c
new file mode 100644
index 000000000..b37a79154
--- /dev/null
+++ b/arch/mips/vr41xx/common/siu.c
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  NEC VR4100 series SIU platform device.
+ *
+ *  Copyright (C) 2007-2008  Yoichi Yuasa <yuasa@linux-mips.org>
+ */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/serial_core.h>
+#include <linux/irq.h>
+
+#include <asm/cpu.h>
+#include <asm/vr41xx/siu.h>
+
+static unsigned int siu_type1_ports[SIU_PORTS_MAX] __initdata = {
+	PORT_VR41XX_SIU,
+	PORT_UNKNOWN,
+};
+
+static struct resource siu_type1_resource[] __initdata = {
+	{
+		.start	= 0x0c000000,
+		.end	= 0x0c00000a,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= SIU_IRQ,
+		.end	= SIU_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static unsigned int siu_type2_ports[SIU_PORTS_MAX] __initdata = {
+	PORT_VR41XX_SIU,
+	PORT_VR41XX_DSIU,
+};
+
+static struct resource siu_type2_resource[] __initdata = {
+	{
+		.start	= 0x0f000800,
+		.end	= 0x0f00080a,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= 0x0f000820,
+		.end	= 0x0f000829,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= SIU_IRQ,
+		.end	= SIU_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= DSIU_IRQ,
+		.end	= DSIU_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static int __init vr41xx_siu_add(void)
+{
+	struct platform_device *pdev;
+	struct resource *res;
+	unsigned int num;
+	int retval;
+
+	pdev = platform_device_alloc("SIU", -1);
+	if (!pdev)
+		return -ENOMEM;
+
+	switch (current_cpu_type()) {
+	case CPU_VR4111:
+	case CPU_VR4121:
+		pdev->dev.platform_data = siu_type1_ports;
+		res = siu_type1_resource;
+		num = ARRAY_SIZE(siu_type1_resource);
+		break;
+	case CPU_VR4122:
+	case CPU_VR4131:
+	case CPU_VR4133:
+		pdev->dev.platform_data = siu_type2_ports;
+		res = siu_type2_resource;
+		num = ARRAY_SIZE(siu_type2_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_siu_add);
+
+void __init vr41xx_siu_setup(void)
+{
+	struct uart_port port;
+	struct resource *res;
+	unsigned int *type;
+	int i;
+
+	switch (current_cpu_type()) {
+	case CPU_VR4111:
+	case CPU_VR4121:
+		type = siu_type1_ports;
+		res = siu_type1_resource;
+		break;
+	case CPU_VR4122:
+	case CPU_VR4131:
+	case CPU_VR4133:
+		type = siu_type2_ports;
+		res = siu_type2_resource;
+		break;
+	default:
+		return;
+	}
+
+	for (i = 0; i < SIU_PORTS_MAX; i++) {
+		port.line = i;
+		port.type = type[i];
+		if (port.type == PORT_UNKNOWN)
+			break;
+		port.mapbase = res[i].start;
+		port.membase = (unsigned char __iomem *)KSEG1ADDR(res[i].start);
+		vr41xx_siu_early_setup(&port);
+	}
+}