/* * 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/module.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 [31mCONFIG_MIPS_CMP[0m { .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); |