forked from luck/tmp_suning_uos_patched
ce7240e445
This resolves the differences between the original 8250 patch, the revised 8250 patch and the independant clean up of the octeon driver (to use platform devices properly yay!) Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
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/*
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* IBM ASM Service Processor Device Driver
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* Copyright (C) IBM Corporation, 2004
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*
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* Author: Max Asböck <amax@us.ibm.com>
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*
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*/
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#include <linux/termios.h>
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#include <linux/tty.h>
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#include <linux/serial_core.h>
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#include <linux/serial_reg.h>
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#include <linux/serial_8250.h>
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#include "ibmasm.h"
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#include "lowlevel.h"
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void ibmasm_register_uart(struct service_processor *sp)
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{
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struct uart_8250_port uart;
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void __iomem *iomem_base;
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iomem_base = sp->base_address + SCOUT_COM_B_BASE;
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/* read the uart scratch register to determine if the UART
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* is dedicated to the service processor or if the OS can use it
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*/
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if (0 == readl(iomem_base + UART_SCR)) {
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dev_info(sp->dev, "IBM SP UART not registered, owned by service processor\n");
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sp->serial_line = -1;
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return;
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}
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memset(&uart, 0, sizeof(uart));
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uart.port.irq = sp->irq;
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uart.port.uartclk = 3686400;
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uart.port.flags = UPF_SHARE_IRQ;
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uart.port.iotype = UPIO_MEM;
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uart.port.membase = iomem_base;
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sp->serial_line = serial8250_register_8250_port(&uart);
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if (sp->serial_line < 0) {
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dev_err(sp->dev, "Failed to register serial port\n");
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return;
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}
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enable_uart_interrupts(sp->base_address);
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}
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void ibmasm_unregister_uart(struct service_processor *sp)
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{
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if (sp->serial_line < 0)
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return;
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disable_uart_interrupts(sp->base_address);
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serial8250_unregister_port(sp->serial_line);
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}
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