1 | /* |
---|---|
2 | * This file is subject to the terms and conditions of the GNU General Public |
3 | * License. See the file "COPYING" in the main directory of this archive |
4 | * for more details. |
5 | * |
6 | * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> |
7 | */ |
8 | |
9 | #include <bcm63xx_io.h> |
10 | #include <linux/serial_bcm63xx.h> |
11 | #include <asm/setup.h> |
12 | |
13 | static void wait_xfered(void) |
14 | { |
15 | unsigned int val; |
16 | |
17 | /* wait for any previous char to be transmitted */ |
18 | do { |
19 | val = bcm_uart0_readl(UART_IR_REG); |
20 | if (val & UART_IR_STAT(UART_IR_TXEMPTY)) |
21 | break; |
22 | } while (1); |
23 | } |
24 | |
25 | void prom_putchar(char c) |
26 | { |
27 | wait_xfered(); |
28 | bcm_uart0_writel(c, UART_FIFO_REG); |
29 | wait_xfered(); |
30 | } |
31 |