mirror of
https://github.com/torvalds/linux.git
synced 2024-12-13 06:32:50 +00:00
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();
|
|
}
|