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75 lines
2.0 KiB
75 lines
2.0 KiB
/* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file "COPYING" in the main directory of this archive |
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* for more details. |
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* |
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* Copyright (C) 2006, 07 MIPS Technologies, Inc. |
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* written by Ralf Baechle ([email protected]) |
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* written by Ralf Baechle <[email protected]> |
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* |
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* Copyright (C) 2008 Wind River Systems, Inc. |
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* updated by Tiejun Chen <[email protected]> |
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* |
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* 1. Probe driver for the Malta's UART ports: |
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* |
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* o 2 ports in the SMC SuperIO |
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* o 1 port in the CBUS UART, a discrete 16550 which normally is only used |
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* for bringups. |
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* |
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* We don't use 8250_platform.c on Malta as it would result in the CBUS |
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* UART becoming ttyS0. |
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* |
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* 2. Register RTC-CMOS platform device on Malta. |
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*/ |
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#include <linux/init.h> |
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#include <linux/serial_8250.h> |
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#include <linux/irq.h> |
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#include <linux/platform_device.h> |
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#include <asm/mips-boards/maltaint.h> |
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#define SMC_PORT(base, int) \ |
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{ \ |
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.iobase = base, \ |
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.irq = int, \ |
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.uartclk = 1843200, \ |
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.iotype = UPIO_PORT, \ |
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.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \ |
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.regshift = 0, \ |
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} |
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#define CBUS_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP) |
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static struct plat_serial8250_port uart8250_data[] = { |
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SMC_PORT(0x3F8, 4), |
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SMC_PORT(0x2F8, 3), |
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#ifndef CONFIG_MIPS_CMP |
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{ |
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.mapbase = 0x1f000900, /* The CBUS UART */ |
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.irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB2, |
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.uartclk = 3686400, /* Twice the usual clk! */ |
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.iotype = UPIO_MEM32, |
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.flags = CBUS_UART_FLAGS, |
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.regshift = 3, |
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}, |
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#endif |
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{ }, |
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}; |
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static struct platform_device malta_uart8250_device = { |
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.name = "serial8250", |
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.id = PLAT8250_DEV_PLATFORM, |
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.dev = { |
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.platform_data = uart8250_data, |
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}, |
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}; |
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static struct platform_device *malta_devices[] __initdata = { |
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&malta_uart8250_device, |
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}; |
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static int __init malta_add_devices(void) |
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{ |
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return platform_add_devices(malta_devices, ARRAY_SIZE(malta_devices)); |
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} |
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device_initcall(malta_add_devices);
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