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/*
* (C) Copyright 2001
* Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* serial.c - serial support for the gal ev board
*/
/* supports both the 16650 duart and the MPSC */
#include <common.h>
#include <command.h>
#include <galileo/memory.h>
#include <serial.h>
#include <linux/compiler.h>
#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
#include <ns16550.h>
#endif
#include "mpsc.h"
DECLARE_GLOBAL_DATA_PTR;
#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
const NS16550_t COM_PORTS[] = { (NS16550_t) CONFIG_SYS_NS16550_COM1,
(NS16550_t) CONFIG_SYS_NS16550_COM2 };
#endif
#ifdef CONFIG_MPSC
static int evb64260_serial_init(void)
{
#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
#endif
mpsc_init(gd->baudrate);
/* init the DUART chans so that KGDB in the kernel can use them */
#ifdef CONFIG_SYS_INIT_CHAN1
NS16550_reinit(COM_PORTS[0], clock_divisor);
#endif
#ifdef CONFIG_SYS_INIT_CHAN2
NS16550_reinit(COM_PORTS[1], clock_divisor);
#endif
return (0);
}
static void evb64260_serial_putc(const char c)
{
if (c == '\n')
mpsc_putchar('\r');
mpsc_putchar(c);
}
static int evb64260_serial_getc(void)
{
return mpsc_getchar();
}
static int evb64260_serial_tstc(void)
{
return mpsc_test_char();
}
static void evb64260_serial_setbrg(void)
{
galbrg_set_baudrate(CONFIG_MPSC_PORT, gd->baudrate);
}
#else /* ! CONFIG_MPSC */
static int evb64260_serial_init(void)
{
int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
#ifdef CONFIG_SYS_INIT_CHAN1
(void)NS16550_init(COM_PORTS[0], clock_divisor);
#endif
#ifdef CONFIG_SYS_INIT_CHAN2
(void)NS16550_init(COM_PORTS[1], clock_divisor);
#endif
return (0);
}
static void evb64260_serial_putc(const char c)
{
if (c == '\n')
NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r');
NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], c);
}
static int evb64260_serial_getc(void)
{
return NS16550_getc(COM_PORTS[CONFIG_SYS_DUART_CHAN]);
}
static int evb64260_serial_tstc(void)
{
return NS16550_tstc(COM_PORTS[CONFIG_SYS_DUART_CHAN]);
}
static void evb64260_serial_setbrg(void)
{
int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
#ifdef CONFIG_SYS_INIT_CHAN1
NS16550_reinit(COM_PORTS[0], clock_divisor);
#endif
#ifdef CONFIG_SYS_INIT_CHAN2
NS16550_reinit(COM_PORTS[1], clock_divisor);
#endif
}
#endif /* CONFIG_MPSC */
static struct serial_device evb64260_serial_drv = {
.name = "evb64260_serial",
.start = evb64260_serial_init,
.stop = NULL,
.setbrg = evb64260_serial_setbrg,
.putc = evb64260_serial_putc,
.puts = default_serial_puts,
.getc = evb64260_serial_getc,
.tstc = evb64260_serial_tstc,
};
void evb64260_serial_initialize(void)
{
serial_register(&evb64260_serial_drv);
}
__weak struct serial_device *default_serial_console(void)
{
return &evb64260_serial_drv;
}
#if defined(CONFIG_CMD_KGDB)
void
kgdb_serial_init(void)
{
}
void
putDebugChar (int c)
{
serial_putc (c);
}
void
putDebugStr (const char *str)
{
serial_puts (str);
}
int
getDebugChar (void)
{
return serial_getc();
}
void
kgdb_interruptible (int yes)
{
return;
}
#endif
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