1/*
2 *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
3 *  JZ4740 serial support
4 *
5 *  This program is free software; you can redistribute	 it and/or modify it
6 *  under  the terms of	 the GNU General  Public License as published by the
7 *  Free Software Foundation;  either version 2 of the	License, or (at your
8 *  option) any later version.
9 *
10 *  You should have received a copy of the  GNU General Public License along
11 *  with this program; if not, write  to the Free Software Foundation, Inc.,
12 *  675 Mass Ave, Cambridge, MA 02139, USA.
13 *
14 */
15
16#include <linux/io.h>
17#include <linux/serial_core.h>
18#include <linux/serial_reg.h>
19
20void jz4740_serial_out(struct uart_port *p, int offset, int value)
21{
22	switch (offset) {
23	case UART_FCR:
24		value |= 0x10; /* Enable uart module */
25		break;
26	case UART_IER:
27		value |= (value & 0x4) << 2;
28		break;
29	default:
30		break;
31	}
32	writeb(value, p->membase + (offset << p->regshift));
33}
34