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);