| /* |
| * 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 | \ |
| UPF_MAGIC_MULTIPLIER, \ |
| .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); |