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/*
* (C) Copyright 2000
* Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#ifdef CFG_NS16550_SERIAL
#include <ns16550.h>
#ifdef CFG_NS87308
#include <ns87308.h>
#endif
#if CONFIG_CONS_INDEX == 1
static NS16550_t console = (NS16550_t) CFG_NS16550_COM1;
#elif CONFIG_CONS_INDEX == 2
static NS16550_t console = (NS16550_t) CFG_NS16550_COM2;
#elif CONFIG_CONS_INDEX == 3
static NS16550_t console = (NS16550_t) CFG_NS16550_COM3;
#elif CONFIG_CONS_INDEX == 4
static NS16550_t console = (NS16550_t) CFG_NS16550_COM4;
#else
#error no valid console defined
#endif
static int calc_divisor (void)
{
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_OMAP1510
/* If can't cleanly clock 115200 set div to 1 */
if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
console->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */
return (1); /* return 1 for base divisor */
}
console->osc_12m_sel = 0; /* clear if previsouly set */
#endif
#ifdef CONFIG_OMAP1610
/* If can't cleanly clock 115200 set div to 1 */
if ((CFG_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) {
return (26); /* return 26 for base divisor */
}
#endif
#ifdef CONFIG_APTIX
#define MODE_X_DIV 13
#else
#define MODE_X_DIV 16
#endif
return (CFG_NS16550_CLK / MODE_X_DIV / gd->baudrate);
}
int serial_init (void)
{
int clock_divisor = calc_divisor();
#ifdef CFG_NS87308
initialise_ns87308();
#endif
NS16550_init(console, clock_divisor);
return (0);
}
void
serial_putc(const char c)
{
if (c == '\n')
NS16550_putc(console, '\r');
NS16550_putc(console, c);
}
void
serial_puts (const char *s)
{
while (*s) {
serial_putc (*s++);
}
}
int
serial_getc(void)
{
return NS16550_getc(console);
}
int
serial_tstc(void)
{
return NS16550_tstc(console);
}
void
serial_setbrg (void)
{
int clock_divisor;
clock_divisor = calc_divisor();
NS16550_reinit(console, clock_divisor);
}
#endif
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