From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 27 Apr 2024 12:05:51 +0200
Subject: Adding upstream version 5.10.209.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/mips/mti-malta/malta-platform.c | 76 ++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 arch/mips/mti-malta/malta-platform.c

(limited to 'arch/mips/mti-malta/malta-platform.c')

diff --git a/arch/mips/mti-malta/malta-platform.c b/arch/mips/mti-malta/malta-platform.c
new file mode 100644
index 000000000..62ffac500
--- /dev/null
+++ b/arch/mips/mti-malta/malta-platform.c
@@ -0,0 +1,76 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006, 07 MIPS Technologies, Inc.
+ *   written by Ralf Baechle (ralf@linux-mips.org)
+ *     written by Ralf Baechle <ralf@linux-mips.org>
+ *
+ * Copyright (C) 2008 Wind River Systems, Inc.
+ *   updated by Tiejun Chen <tiejun.chen@windriver.com>
+ *
+ * 1. Probe driver for the Malta's UART ports:
+ *
+ *   o 2 ports in the SMC SuperIO
+ *   o 1 port in the CBUS UART, a discrete 16550 which normally is only used
+ *     for bringups.
+ *
+ * We don't use 8250_platform.c on Malta as it would result in the CBUS
+ * UART becoming ttyS0.
+ *
+ * 2. Register RTC-CMOS platform device on Malta.
+ */
+#include <linux/init.h>
+#include <linux/serial_8250.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <asm/mips-boards/maltaint.h>
+
+#define SMC_PORT(base, int)						\
+{									\
+	.iobase		= base,						\
+	.irq		= int,						\
+	.uartclk	= 1843200,					\
+	.iotype		= UPIO_PORT,					\
+	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,		\
+	.regshift	= 0,						\
+}
+
+#define CBUS_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
+
+static struct plat_serial8250_port uart8250_data[] = {
+	SMC_PORT(0x3F8, 4),
+	SMC_PORT(0x2F8, 3),
+#ifndef CONFIG_MIPS_CMP
+	{
+		.mapbase	= 0x1f000900,	/* The CBUS UART */
+		.irq		= MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB2,
+		.uartclk	= 3686400,	/* Twice the usual clk! */
+		.iotype		= IS_ENABLED(CONFIG_CPU_BIG_ENDIAN) ?
+				  UPIO_MEM32BE : UPIO_MEM32,
+		.flags		= CBUS_UART_FLAGS,
+		.regshift	= 3,
+	},
+#endif
+	{ },
+};
+
+static struct platform_device malta_uart8250_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= uart8250_data,
+	},
+};
+
+static struct platform_device *malta_devices[] __initdata = {
+	&malta_uart8250_device,
+};
+
+static int __init malta_add_devices(void)
+{
+	return platform_add_devices(malta_devices, ARRAY_SIZE(malta_devices));
+}
+
+device_initcall(malta_add_devices);
-- 
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