Eric Lee / smarc-fsl-linux-kernel

Blame view

drivers/rtc/rtc-ps3.c 1.92 KB
edit raw normal view history
81f7e3824   Eric Lee   Initial Release, ... 
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
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
 
  /*
   * PS3 RTC Driver
   *
   * Copyright 2009 Sony Corporation
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; version 2 of the License.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.
   * If not, see <http://www.gnu.org/licenses/>.
   */
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/platform_device.h>
  #include <linux/rtc.h>
  
  #include <asm/lv1call.h>
  #include <asm/ps3.h>
  
  
  static u64 read_rtc(void)
  {
  	int result;
  	u64 rtc_val;
  	u64 tb_val;
  
  	result = lv1_get_rtc(&rtc_val, &tb_val);
  	BUG_ON(result);
  
  	return rtc_val;
  }
  
  static int ps3_get_time(struct device *dev, struct rtc_time *tm)
  {
  	rtc_time_to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm);
  	return rtc_valid_tm(tm);
  }
  
  static int ps3_set_time(struct device *dev, struct rtc_time *tm)
  {
  	unsigned long now;
  
  	rtc_tm_to_time(tm, &now);
  	ps3_os_area_set_rtc_diff(now - read_rtc());
  	return 0;
  }
  
  static const struct rtc_class_ops ps3_rtc_ops = {
  	.read_time = ps3_get_time,
  	.set_time = ps3_set_time,
  };
  
  static int __init ps3_rtc_probe(struct platform_device *dev)
  {
  	struct rtc_device *rtc;
  
  	rtc = devm_rtc_device_register(&dev->dev, "rtc-ps3", &ps3_rtc_ops,
  				  THIS_MODULE);
  	if (IS_ERR(rtc))
  		return PTR_ERR(rtc);
  
  	platform_set_drvdata(dev, rtc);
  	return 0;
  }
  
  static struct platform_driver ps3_rtc_driver = {
  	.driver = {
  		.name = "rtc-ps3",
  	},
  };
  
  module_platform_driver_probe(ps3_rtc_driver, ps3_rtc_probe);
  
  MODULE_AUTHOR("Sony Corporation");
  MODULE_LICENSE("GPL");
  MODULE_DESCRIPTION("ps3 RTC driver");
  MODULE_ALIAS("platform:rtc-ps3");