mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 01:10:04 +00:00
ARM: 5855/1: putc support for nuc900
putc support for nuc900 Signed-off-by: lijie <eltshanli@gmail.com> Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
parent
d76cdf2394
commit
040f04598c
1 changed files with 10 additions and 0 deletions
|
@ -22,11 +22,21 @@
|
|||
|
||||
#include <mach/regs-serial.h>
|
||||
#include <mach/map.h>
|
||||
#include <linux/serial_reg.h>
|
||||
|
||||
#define arch_decomp_wdog()
|
||||
|
||||
#define TX_DONE (UART_LSR_TEMT | UART_LSR_THRE)
|
||||
static volatile u32 * uart_base = (u32 *)UART0_PA;
|
||||
|
||||
static void putc(int ch)
|
||||
{
|
||||
/* Check THRE and TEMT bits before we transmit the character.
|
||||
*/
|
||||
while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
|
||||
barrier();
|
||||
|
||||
*uart_base = ch;
|
||||
}
|
||||
|
||||
static inline void flush(void)
|
||||
|
|
Loading…
Reference in a new issue