[mirror_ubuntu-artful-kernel.git] / arch / mips / mti-malta / malta-platform.c

/*
 * 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		= 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);
Commit	Line	Data
e7c4782f RB	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
566a3b95	6	* Copyright (C) 2006, 07 MIPS Technologies, Inc.
e7c4782f	7	* written by Ralf Baechle (ralf@linux-mips.org)
566a3b95	8	* written by Ralf Baechle <ralf@linux-mips.org>
e7c4782f	9	*
192cc7f0 TC	10	* Copyright (C) 2008 Wind River Systems, Inc.
	11	* updated by Tiejun Chen <tiejun.chen@windriver.com>
	12	*
	13	* 1. Probe driver for the Malta's UART ports:
e7c4782f RB	14	*
	15	* o 2 ports in the SMC SuperIO
	16	* o 1 port in the CBUS UART, a discrete 16550 which normally is only used
	17	* for bringups.
	18	*
	19	* We don't use 8250_platform.c on Malta as it would result in the CBUS
	20	* UART becoming ttyS0.
192cc7f0 TC	21	*
192cc7f0 TC	22	* 2. Register RTC-CMOS platform device on Malta.
e7c4782f	23	*/
e7c4782f RB	24	#include <linux/init.h>
e7c4782f RB	25	#include <linux/serial_8250.h>
ca4d3e67	26	#include <linux/irq.h>
192cc7f0	27	#include <linux/platform_device.h>
225ae5fd	28	#include <asm/mips-boards/maltaint.h>
e7c4782f RB	29
	30	#define SMC_PORT(base, int) \
	31	{ \
	32	.iobase = base, \
	33	.irq = int, \
	34	.uartclk = 1843200, \
	35	.iotype = UPIO_PORT, \
	36	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST, \
	37	.regshift = 0, \
	38	}
	39
	40	#define CBUS_UART_FLAGS (UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST \| UPF_IOREMAP)
	41
	42	static struct plat_serial8250_port uart8250_data[] = {
	43	SMC_PORT(0x3F8, 4),
	44	SMC_PORT(0x2F8, 3),
f6ba0610	45	#ifndef CONFIG_MIPS_CMP
e7c4782f RB	46	{
e7c4782f RB	47	.mapbase = 0x1f000900, /* The CBUS UART */
225ae5fd	48	.irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB2,
e7c4782f RB	49	.uartclk = 3686400, /* Twice the usual clk! */
	50	.iotype = UPIO_MEM32,
	51	.flags = CBUS_UART_FLAGS,
	52	.regshift = 3,
	53	},
f6ba0610	54	#endif
e7c4782f RB	55	{ },
	56	};
	57
192cc7f0	58	static struct platform_device malta_uart8250_device = {
e7c4782f	59	.name = "serial8250",
566a3b95	60	.id = PLAT8250_DEV_PLATFORM,
e7c4782f RB	61	.dev = {
	62	.platform_data = uart8250_data,
	63	},
	64	};
	65
192cc7f0 TC	66	static struct platform_device *malta_devices[] __initdata = {
192cc7f0 TC	67	&malta_uart8250_device,
192cc7f0 TC	68	};
	69
	70	static int __init malta_add_devices(void)
e7c4782f	71	{
db19462b	72	return platform_add_devices(malta_devices, ARRAY_SIZE(malta_devices));
192cc7f0	73	}
e7c4782f	74
192cc7f0	75	device_initcall(malta_add_devices);