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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/m68k/sun3/intersil.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/m68k/sun3/intersil.c')
-rw-r--r--arch/m68k/sun3/intersil.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/m68k/sun3/intersil.c b/arch/m68k/sun3/intersil.c
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index 000000000000..db359d7402a6
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+++ b/arch/m68k/sun3/intersil.c
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1/*
2 * arch/m68k/sun3/intersil.c
3 *
4 * basic routines for accessing the intersil clock within the sun3 machines
5 *
6 * started 11/12/1999 Sam Creasey
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file COPYING in the main directory of this archive
10 * for more details.
11 */
12
13#include <linux/kernel.h>
14#include <linux/rtc.h>
15
16#include <asm/errno.h>
17#include <asm/system.h>
18#include <asm/semaphore.h>
19#include <asm/rtc.h>
20#include <asm/intersil.h>
21
22
23/* bits to set for start/run of the intersil */
24#define STOP_VAL (INTERSIL_STOP | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
25#define START_VAL (INTERSIL_RUN | INTERSIL_INT_ENABLE | INTERSIL_24H_MODE)
26
27/* does this need to be implemented? */
28unsigned long sun3_gettimeoffset(void)
29{
30 return 1;
31}
32
33
34/* get/set hwclock */
35
36int sun3_hwclk(int set, struct rtc_time *t)
37{
38 volatile struct intersil_dt *todintersil;
39 unsigned long flags;
40
41 todintersil = (struct intersil_dt *) &intersil_clock->counter;
42
43 local_irq_save(flags);
44
45 intersil_clock->cmd_reg = STOP_VAL;
46
47 /* set or read the clock */
48 if(set) {
49 todintersil->csec = 0;
50 todintersil->hour = t->tm_hour;
51 todintersil->minute = t->tm_min;
52 todintersil->second = t->tm_sec;
53 todintersil->month = t->tm_mon;
54 todintersil->day = t->tm_mday;
55 todintersil->year = t->tm_year - 68;
56 todintersil->weekday = t->tm_wday;
57 } else {
58 /* read clock */
59 t->tm_sec = todintersil->csec;
60 t->tm_hour = todintersil->hour;
61 t->tm_min = todintersil->minute;
62 t->tm_sec = todintersil->second;
63 t->tm_mon = todintersil->month;
64 t->tm_mday = todintersil->day;
65 t->tm_year = todintersil->year + 68;
66 t->tm_wday = todintersil->weekday;
67 }
68
69 intersil_clock->cmd_reg = START_VAL;
70
71 local_irq_restore(flags);
72
73 return 0;
74
75}
76