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5c93316c8c
prom_putchar() is used centrally in early printk infrastructure therefore
at least MIPS should agree on the function return type.
[paul.burton@mips.com:
- Include linux/types.h in asm/setup.h to gain the bool typedef before
we start include asm/setup.h elsewhere.
- Include asm/setup.h in all files that use or define prom_putchar().
- Also standardise on signed rather than unsigned char argument.]
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19842/
Cc: linux-mips@linux-mips.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
31 lines
638 B
C
31 lines
638 B
C
/*
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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) 2008 Maxime Bizon <mbizon@freebox.fr>
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*/
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#include <bcm63xx_io.h>
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#include <linux/serial_bcm63xx.h>
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#include <asm/setup.h>
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static void wait_xfered(void)
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{
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unsigned int val;
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/* wait for any previous char to be transmitted */
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do {
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val = bcm_uart0_readl(UART_IR_REG);
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if (val & UART_IR_STAT(UART_IR_TXEMPTY))
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break;
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} while (1);
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}
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void prom_putchar(char c)
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{
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wait_xfered();
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bcm_uart0_writel(c, UART_FIFO_REG);
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wait_xfered();
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}
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