[linux-block.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) 2007 MIPS Technologies, Inc.
 *   written by Ralf Baechle (ralf@linux-mips.org)
 *
 * 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.
 */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/serial_8250.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),
	{
		.mapbase	= 0x1f000900,	/* The CBUS UART */
		.irq		= MIPS_CPU_IRQ_BASE + 2,
		.uartclk	= 3686400,	/* Twice the usual clk! */
		.iotype		= UPIO_MEM32,
		.flags		= CBUS_UART_FLAGS,
		.regshift	= 3,
	},
	{ },
};

static struct platform_device uart8250_device = {
	.name			= "serial8250",
	.id			= PLAT8250_DEV_PLATFORM2,
	.dev			= {
		.platform_data	= uart8250_data,
	},
};

static int __init uart8250_init(void)
{
	return platform_device_register(&uart8250_device);
}

module_init(uart8250_init);

MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("8250 UART probe driver for the Malta CBUS UART");
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	*
	6	* Copyright (C) 2007 MIPS Technologies, Inc.
	7	* written by Ralf Baechle (ralf@linux-mips.org)
	8	*
	9	* Probe driver for the Malta's UART ports:
	10	*
	11	* o 2 ports in the SMC SuperIO
	12	* o 1 port in the CBUS UART, a discrete 16550 which normally is only used
	13	* for bringups.
	14	*
	15	* We don't use 8250_platform.c on Malta as it would result in the CBUS
	16	* UART becoming ttyS0.
	17	*/
	18	#include <linux/module.h>
	19	#include <linux/init.h>
	20	#include <linux/serial_8250.h>
	21
	22	#define SMC_PORT(base, int) \
	23	{ \
	24	.iobase = base, \
	25	.irq = int, \
	26	.uartclk = 1843200, \
	27	.iotype = UPIO_PORT, \
	28	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST, \
	29	.regshift = 0, \
	30	}
	31
	32	#define CBUS_UART_FLAGS (UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST \| UPF_IOREMAP)
	33
	34	static struct plat_serial8250_port uart8250_data[] = {
	35	SMC_PORT(0x3F8, 4),
	36	SMC_PORT(0x2F8, 3),
	37	{
	38	.mapbase = 0x1f000900, /* The CBUS UART */
	39	.irq = MIPS_CPU_IRQ_BASE + 2,
	40	.uartclk = 3686400, /* Twice the usual clk! */
	41	.iotype = UPIO_MEM32,
	42	.flags = CBUS_UART_FLAGS,
	43	.regshift = 3,
	44	},
	45	{ },
	46	};
	47
	48	static struct platform_device uart8250_device = {
	49	.name = "serial8250",
	50	.id = PLAT8250_DEV_PLATFORM2,
	51	.dev = {
	52	.platform_data = uart8250_data,
	53	},
	54	};
	55
	56	static int __init uart8250_init(void)
	57	{
	58	return platform_device_register(&uart8250_device);
	59	}
	60
	61	module_init(uart8250_init);
	62
	63	MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
	64	MODULE_LICENSE("GPL");
65	MODULE_DESCRIPTION("8250 UART probe driver for the Malta CBUS UART");