1 files changed, 105 insertions, 0 deletions

diff --git a/arch/mips/vr41xx/common/rtc.c b/arch/mips/vr41xx/common/rtc.c
new file mode 100644
index 000000000..5ce668317
--- /dev/null
+++ b/arch/mips/vr41xx/common/rtc.c
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  NEC VR4100 series RTC 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/irq.h>
+
+static struct resource rtc_type1_resource[] __initdata = {
+        {
+                .start  = 0x0b0000c0,
+                .end    = 0x0b0000df,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = 0x0b0001c0,
+                .end    = 0x0b0001df,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = ELAPSEDTIME_IRQ,
+                .end    = ELAPSEDTIME_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                .start  = RTCLONG1_IRQ,
+                .end    = RTCLONG1_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct resource rtc_type2_resource[] __initdata = {
+        {
+                .start  = 0x0f000100,
+                .end    = 0x0f00011f,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = 0x0f000120,
+                .end    = 0x0f00013f,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = ELAPSEDTIME_IRQ,
+                .end    = ELAPSEDTIME_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                .start  = RTCLONG1_IRQ,
+                .end    = RTCLONG1_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static int __init vr41xx_rtc_add(void)
+{
+        struct platform_device *pdev;
+        struct resource *res;
+        unsigned int num;
+        int retval;
+
+        pdev = platform_device_alloc("RTC", -1);
+        if (!pdev)
+                return -ENOMEM;
+
+        switch (current_cpu_type()) {
+        case CPU_VR4111:
+        case CPU_VR4121:
+                res = rtc_type1_resource;
+                num = ARRAY_SIZE(rtc_type1_resource);
+                break;
+        case CPU_VR4122:
+        case CPU_VR4131:
+        case CPU_VR4133:
+                res = rtc_type2_resource;
+                num = ARRAY_SIZE(rtc_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_rtc_add);