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Serial: ns16550: Add support for CONFIG_SYS_NS16550_IER macro 

On some processors this ier register configuration is different
for ex. Marvell Armada100

This patch introduce CONFIG_SYS_NS16550_IER macro support to
unconditionally initialize this register.

Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
This commit is contained in:
Prafulla Wadaskar 2010-10-27 21:58:31 +05:30 committed by Wolfgang Denk
parent ce089c04a8
commit a160ea0b5e
1 changed files with 6 additions and 2 deletions
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8
drivers/serial/ns16550.c
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@ -24,9 +24,13 @@
#define serial_in(y) readb(y)
#endif
#ifndef CONFIG_SYS_NS16550_IER
#define CONFIG_SYS_NS16550_IER 0x00
#endif /* CONFIG_SYS_NS16550_IER */
void NS16550_init (NS16550_t com_port, int baud_divisor)
{
serial_out(0x00, &com_port->ier);
serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier);
#if defined(CONFIG_OMAP) && !defined(CONFIG_OMAP3_ZOOM2)
serial_out(0x7, &com_port->mdr1); /* mode select reset TL16C750*/
#endif
@ -52,7 +56,7 @@ void NS16550_init (NS16550_t com_port, int baud_divisor)
#ifndef CONFIG_NS16550_MIN_FUNCTIONS
void NS16550_reinit (NS16550_t com_port, int baud_divisor)
{
serial_out(0x00, &com_port->ier);
serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier);
serial_out(UART_LCR_BKSE | UART_LCRVAL, &com_port->lcr);
serial_out(0, &com_port->dll);
serial_out(0, &com_port->dlm);