Release 4.14 arch/mips/lantiq/early_printk.c

/*
 *  This program is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License version 2 as published
 *  by the Free Software Foundation.
 *
 *  Copyright (C) 2010 John Crispin <john@phrozen.org>
 */

#include <linux/cpu.h>
#include <lantiq_soc.h>


#define ASC_BUF		1024

#define LTQ_ASC_FSTAT	((u32 *)(LTQ_EARLY_ASC + 0x0048))
#ifdef __BIG_ENDIAN

#define LTQ_ASC_TBUF	((u32 *)(LTQ_EARLY_ASC + 0x0020 + 3))
#else

#define LTQ_ASC_TBUF	((u32 *)(LTQ_EARLY_ASC + 0x0020))
#endif

#define TXMASK		0x3F00

#define TXOFFSET	8



void prom_putchar(char c)
{
	unsigned long flags;

	local_irq_save(flags);
	do { } while ((ltq_r32(LTQ_ASC_FSTAT) & TXMASK) >> TXOFFSET);
	if (c == '\n')
		ltq_w8('\r', LTQ_ASC_TBUF);
	ltq_w8(c, LTQ_ASC_TBUF);
	local_irq_restore(flags);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
John Crispin
56
96.55%
1
50.00%
Thomas Langer
2
3.45%
1
50.00%
Total
58
100.00%
2
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
John Crispin
81
84.38%
2
66.67%
Thomas Langer
15
15.62%
1
33.33%
Total
96
100.00%
3
100.00%
Directory: arch/mips/lantiq

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