mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-18 01:34:14 +08:00
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
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
|
|
*/
|
|
|
|
#include <bcm63xx_io.h>
|
|
#include <linux/serial_bcm63xx.h>
|
|
#include <asm/setup.h>
|
|
|
|
static void wait_xfered(void)
|
|
{
|
|
unsigned int val;
|
|
|
|
/* wait for any previous char to be transmitted */
|
|
do {
|
|
val = bcm_uart0_readl(UART_IR_REG);
|
|
if (val & UART_IR_STAT(UART_IR_TXEMPTY))
|
|
break;
|
|
} while (1);
|
|
}
|
|
|
|
void prom_putchar(char c)
|
|
{
|
|
wait_xfered();
|
|
bcm_uart0_writel(c, UART_FIFO_REG);
|
|
wait_xfered();
|
|
}
|