82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
/*
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* linux_console.c - Use stdin/stdout as a console device
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*
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* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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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 version 2
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* as published by the Free Software Foundation.
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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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*/
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#include <common.h>
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#include <driver.h>
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#include <init.h>
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#include <mach/linux.h>
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#include <malloc.h>
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#include <console.h>
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#include <xfuncs.h>
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static void linux_console_putc(struct console_device *cdev, char c)
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{
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struct device_d *dev = cdev->dev;
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struct linux_console_data *d = dev->platform_data;
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linux_write(d->stdoutfd, &c, 1);
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}
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static int linux_console_tstc(struct console_device *cdev)
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{
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struct device_d *dev = cdev->dev;
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struct linux_console_data *d = dev->platform_data;
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return linux_tstc(d->stdinfd);
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}
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static int linux_console_getc(struct console_device *cdev)
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{
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struct device_d *dev = cdev->dev;
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struct linux_console_data *d = dev->platform_data;
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static char old_c;
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char c;
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linux_read(d->stdinfd, &c, 1);
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if (old_c == 0x1c && c == 'q')
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panic("^\\q pressed - exiting");
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old_c = c;
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return c;
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}
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static int linux_console_probe(struct device_d *dev)
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{
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struct console_device *cdev;
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struct linux_console_data *data = dev->platform_data;
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cdev = xzalloc(sizeof(struct console_device));
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cdev->dev = dev;
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cdev->f_caps = data->flags;
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cdev->tstc = linux_console_tstc;
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cdev->putc = linux_console_putc;
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cdev->getc = linux_console_getc;
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console_register(cdev);
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return 0;
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}
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static struct driver_d linux_console_driver = {
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.name = "console",
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.probe = linux_console_probe,
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};
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console_platform_driver(linux_console_driver);
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