1/*
2 * Copyright (C) 1999, 2000, 2005  MIPS Technologies, Inc.
3 *	All rights reserved.
4 *	Authors: Carsten Langgaard <carstenl@mips.com>
5 *		 Maciej W. Rozycki <macro@mips.com>
6 * Copyright (C) 2003, 05 Ralf Baechle (ralf@linux-mips.org)
7 *
8 * This program is free software; you can distribute it and/or modify it
9 * under the terms of the GNU General Public License (Version 2) as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15 * for more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
20 */
21#ifndef __ASM_MACH_ATLAS_MC146818RTC_H
22#define __ASM_MACH_ATLAS_MC146818RTC_H
23
24#include <linux/types.h>
25
26#include <asm/addrspace.h>
27
28#include <asm/mips-boards/atlas.h>
29#include <asm/mips-boards/atlasint.h>
30
31#define ARCH_RTC_LOCATION
32
33#define RTC_PORT(x)	(ATLAS_RTC_ADR_REG + (x) * 8)
34#define RTC_IO_EXTENT	0x100
35#define RTC_IOMAPPED	0
36#define RTC_IRQ		ATLAS_INT_RTC
37
38static inline unsigned char CMOS_READ(unsigned long addr)
39{
40	volatile u32 *ireg = (void *)CKSEG1ADDR(RTC_PORT(0));
41	volatile u32 *dreg = (void *)CKSEG1ADDR(RTC_PORT(1));
42
43	*ireg = addr;
44	return *dreg;
45}
46
47static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
48{
49	volatile u32 *ireg = (void *)CKSEG1ADDR(RTC_PORT(0));
50	volatile u32 *dreg = (void *)CKSEG1ADDR(RTC_PORT(1));
51
52	*ireg = addr;
53	*dreg = data;
54}
55
56#define RTC_ALWAYS_BCD	0
57
58#define mc146818_decode_year(year) ((year) < 70 ? (year) + 2000 : (year) + 1900)
59
60#endif /* __ASM_MACH_ATLAS_MC146818RTC_H */
61