blob: c09ddc0dbeb32f4a153f67bf3095c0020e096d30 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/*
* Setup code for PC-style Real-Time Clock.
*
* Author: Wade Farnsworth <wfarnsworth@mvista.com>
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/mc146818rtc.h>
#include <asm/prom.h>
static int __init add_rtc(void)
{
struct device_node *np;
struct platform_device *pd;
struct resource res[2];
int ret;
memset(&res, 0, sizeof(res));
np = of_find_compatible_node(NULL, NULL, "pnpPNP,b00");
if (!np)
return -ENODEV;
ret = of_address_to_resource(np, 0, &res[0]);
of_node_put(np);
if (ret)
return ret;
/*
* RTC_PORT(x) is hardcoded in asm/mc146818rtc.h. Verify that the
* address provided by the device node matches.
*/
if (res[0].start != RTC_PORT(0))
return -EINVAL;
/* Use a fixed interrupt value of 8 since on PPC if we are using this
* its off an i8259 which we ensure has interrupt numbers 0..15. */
res[1].start = 8;
res[1].end = 8;
res[1].flags = IORESOURCE_IRQ;
pd = platform_device_register_simple("rtc_cmos", -1,
&res[0], 2);
if (IS_ERR(pd))
return PTR_ERR(pd);
return 0;
}
fs_initcall(add_rtc);
MODULE_LICENSE("GPL");
|
