1 /*
2 * linux/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_rtc.c
3 *
4 * RTC routines for Dallas chip.
5 *
6 * Copyright (C) 2003 TimeSys Corp.
7 * S. James Hill (James.Hill@timesys.com)
8 * (sjhill@realitydiluted.com)
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
21 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
23 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
24 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * You should have received a copy of the GNU General Public License along
27 * with this program; if not, write to the Free Software Foundation, Inc.,
28 * 675 Mass Ave, Cambridge, MA 02139, USA.
29 */
30 #include <asm/mc146818rtc.h>
31
ds1742_rtc_read_data(unsigned long addr)32 static unsigned char ds1742_rtc_read_data(unsigned long addr)
33 {
34 return readb(addr);
35 }
36
ds1742_rtc_write_data(unsigned char data,unsigned long addr)37 static void ds1742_rtc_write_data(unsigned char data, unsigned long addr)
38 {
39 writeb(data, addr);
40 }
41
ds1742_rtc_bcd_mode(void)42 static int ds1742_rtc_bcd_mode(void)
43 {
44 return 1;
45 }
46
47 struct rtc_ops ds1742_rtc_ops = {
48 &ds1742_rtc_read_data,
49 &ds1742_rtc_write_data,
50 &ds1742_rtc_bcd_mode
51 };
52