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);
+        }
+}