102 строки
2.5 KiB
C
102 строки
2.5 KiB
C
/*
|
|
* setup serial port in SCC
|
|
*
|
|
* (C) Copyright 2006-2007 TOSHIBA CORPORATION
|
|
*
|
|
* 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.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include <linux/tty.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/serial_core.h>
|
|
#include <linux/console.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/prom.h>
|
|
|
|
/* sio irq0=0xb00010022 irq0=0xb00010023 irq2=0xb00010024
|
|
mmio=0xfff000-0x1000,0xff2000-0x1000 */
|
|
static int txx9_serial_bitmap __initdata;
|
|
|
|
static struct {
|
|
uint32_t offset;
|
|
uint32_t index;
|
|
} txx9_scc_tab[3] __initdata = {
|
|
{ 0x300, 0 }, /* 0xFFF300 */
|
|
{ 0x400, 0 }, /* 0xFFF400 */
|
|
{ 0x800, 1 } /* 0xFF2800 */
|
|
};
|
|
|
|
static int __init txx9_serial_init(void)
|
|
{
|
|
extern int early_serial_txx9_setup(struct uart_port *port);
|
|
struct device_node *node = NULL;
|
|
int i;
|
|
struct uart_port req;
|
|
struct of_irq irq;
|
|
struct resource res;
|
|
|
|
while ((node = of_find_compatible_node(node,
|
|
"serial", "toshiba,sio-scc")) != NULL) {
|
|
for (i = 0; i < ARRAY_SIZE(txx9_scc_tab); i++) {
|
|
if (!(txx9_serial_bitmap & (1<<i)))
|
|
continue;
|
|
|
|
if (of_irq_map_one(node, i, &irq))
|
|
continue;
|
|
if (of_address_to_resource(node,
|
|
txx9_scc_tab[i].index, &res))
|
|
continue;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
req.line = i;
|
|
req.iotype = UPIO_MEM;
|
|
req.mapbase = res.start + txx9_scc_tab[i].offset;
|
|
#ifdef CONFIG_SERIAL_TXX9_CONSOLE
|
|
req.membase = ioremap(req.mapbase, 0x24);
|
|
#endif
|
|
req.irq = irq_create_of_mapping(irq.controller,
|
|
irq.specifier, irq.size);
|
|
req.flags |= UPF_IOREMAP | UPF_BUGGY_UART
|
|
/*HAVE_CTS_LINE*/;
|
|
req.uartclk = 83300000;
|
|
early_serial_txx9_setup(&req);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init txx9_serial_config(char *ptr)
|
|
{
|
|
int i;
|
|
|
|
for (;;) {
|
|
switch (get_option(&ptr, &i)) {
|
|
default:
|
|
return 0;
|
|
case 2:
|
|
txx9_serial_bitmap |= 1 << i;
|
|
break;
|
|
case 1:
|
|
txx9_serial_bitmap |= 1 << i;
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
__setup("txx9_serial=", txx9_serial_config);
|
|
|
|
console_initcall(txx9_serial_init);
|