1/*
  2 * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
  3 * reserved.
  4 *
  5 * This software is available to you under a choice of one of two
  6 * licenses.  You may choose to be licensed under the terms of the GNU
  7 * General Public License (GPL) Version 2, available from the file
  8 * COPYING in the main directory of this source tree, or the NetLogic
  9 * license below:
 10 *
 11 * Redistribution and use in source and binary forms, with or without
 12 * modification, are permitted provided that the following conditions
 13 * are met:
 14 *
 15 * 1. Redistributions of source code must retain the above copyright
 16 *    notice, this list of conditions and the following disclaimer.
 17 * 2. Redistributions in binary form must reproduce the above copyright
 18 *    notice, this list of conditions and the following disclaimer in
 19 *    the documentation and/or other materials provided with the
 20 *    distribution.
 21 *
 22 * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 25 * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 31 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 33 */
 34
 35#include <linux/dma-mapping.h>
 36#include <linux/kernel.h>
 37#include <linux/delay.h>
 38#include <linux/init.h>
 39#include <linux/platform_device.h>
 40#include <linux/serial.h>
 41#include <linux/serial_8250.h>
 42#include <linux/pci.h>
 43#include <linux/serial_reg.h>
 44#include <linux/spinlock.h>
 45
 46#include <asm/time.h>
 47#include <asm/addrspace.h>
 48#include <asm/netlogic/haldefs.h>
 49#include <asm/netlogic/xlp-hal/iomap.h>
 50#include <asm/netlogic/xlp-hal/xlp.h>
 51#include <asm/netlogic/xlp-hal/pic.h>
 52#include <asm/netlogic/xlp-hal/uart.h>
 53
 54static unsigned int nlm_xlp_uart_in(struct uart_port *p, int offset)
 55{
 56	 return nlm_read_reg(p->iobase, offset);
 57}
 58
 59static void nlm_xlp_uart_out(struct uart_port *p, int offset, int value)
 60{
 61	nlm_write_reg(p->iobase, offset, value);
 62}
 63
 64#define PORT(_irq)					\
 65	{						\
 66		.irq		= _irq,			\
 67		.regshift	= 2,			\
 68		.iotype		= UPIO_MEM32,		\
 69		.flags		= (UPF_SKIP_TEST|UPF_FIXED_TYPE|\
 70					UPF_BOOT_AUTOCONF),	\
 71		.uartclk	= XLP_IO_CLK,		\
 72		.type		= PORT_16550A,		\
 73		.serial_in	= nlm_xlp_uart_in,	\
 74		.serial_out	= nlm_xlp_uart_out,	\
 75	}
 76
 77static struct plat_serial8250_port xlp_uart_data[] = {
 78	PORT(PIC_UART_0_IRQ),
 79	PORT(PIC_UART_1_IRQ),
 80	{},
 81};
 82
 83static struct platform_device uart_device = {
 84	.name		= "serial8250",
 85	.id		= PLAT8250_DEV_PLATFORM,
 86	.dev = {
 87		.platform_data = xlp_uart_data,
 88	},
 89};
 90
 91static int __init nlm_platform_uart_init(void)
 92{
 93	unsigned long mmio;
 94
 95	mmio = (unsigned long)nlm_get_uart_regbase(0, 0);
 96	xlp_uart_data[0].iobase = mmio;
 97	xlp_uart_data[0].membase = (void __iomem *)mmio;
 98	xlp_uart_data[0].mapbase = mmio;
 99
100	mmio = (unsigned long)nlm_get_uart_regbase(0, 1);
101	xlp_uart_data[1].iobase = mmio;
102	xlp_uart_data[1].membase = (void __iomem *)mmio;
103	xlp_uart_data[1].mapbase = mmio;
104
105	return platform_device_register(&uart_device);
106}
107
108arch_initcall(nlm_platform_uart_init);