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-rw-r--r--arch/mips/netlogic/xlp/platform.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlp/platform.c b/arch/mips/netlogic/xlp/platform.c
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+++ b/arch/mips/netlogic/xlp/platform.c
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+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/pci.h>
+#include <linux/serial_reg.h>
+#include <linux/spinlock.h>
+
+#include <asm/time.h>
+#include <asm/addrspace.h>
+#include <asm/netlogic/haldefs.h>
+#include <asm/netlogic/xlp-hal/iomap.h>
+#include <asm/netlogic/xlp-hal/xlp.h>
+#include <asm/netlogic/xlp-hal/pic.h>
+#include <asm/netlogic/xlp-hal/uart.h>
+
+static unsigned int nlm_xlp_uart_in(struct uart_port *p, int offset)
+{
+ return nlm_read_reg(p->iobase, offset);
+}
+
+static void nlm_xlp_uart_out(struct uart_port *p, int offset, int value)
+{
+ nlm_write_reg(p->iobase, offset, value);
+}
+
+#define PORT(_irq) \
+ { \
+ .irq = _irq, \
+ .regshift = 2, \
+ .iotype = UPIO_MEM32, \
+ .flags = (UPF_SKIP_TEST|UPF_FIXED_TYPE|\
+ UPF_BOOT_AUTOCONF), \
+ .uartclk = XLP_IO_CLK, \
+ .type = PORT_16550A, \
+ .serial_in = nlm_xlp_uart_in, \
+ .serial_out = nlm_xlp_uart_out, \
+ }
+
+static struct plat_serial8250_port xlp_uart_data[] = {
+ PORT(PIC_UART_0_IRQ),
+ PORT(PIC_UART_1_IRQ),
+ {},
+};
+
+static struct platform_device uart_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = xlp_uart_data,
+ },
+};
+
+static int __init nlm_platform_uart_init(void)
+{
+ unsigned long mmio;
+
+ mmio = (unsigned long)nlm_get_uart_regbase(0, 0);
+ xlp_uart_data[0].iobase = mmio;
+ xlp_uart_data[0].membase = (void __iomem *)mmio;
+ xlp_uart_data[0].mapbase = mmio;
+
+ mmio = (unsigned long)nlm_get_uart_regbase(0, 1);
+ xlp_uart_data[1].iobase = mmio;
+ xlp_uart_data[1].membase = (void __iomem *)mmio;
+ xlp_uart_data[1].mapbase = mmio;
+
+ return platform_device_register(&uart_device);
+}
+
+arch_initcall(nlm_platform_uart_init);