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();
|
||
|
|
}
|