Commit | Line | Data |
---|---|---|
a95579cd AZ |
1 | /* |
2 | * An RTC test device/driver | |
3 | * Copyright (C) 2005 Tower Technologies | |
4 | * Author: Alessandro Zummo <a.zummo@towertech.it> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/module.h> | |
12 | #include <linux/err.h> | |
13 | #include <linux/rtc.h> | |
14 | #include <linux/platform_device.h> | |
15 | ||
16 | static struct platform_device *test0 = NULL, *test1 = NULL; | |
17 | ||
18 | static int test_rtc_read_alarm(struct device *dev, | |
19 | struct rtc_wkalrm *alrm) | |
20 | { | |
21 | return 0; | |
22 | } | |
23 | ||
24 | static int test_rtc_set_alarm(struct device *dev, | |
25 | struct rtc_wkalrm *alrm) | |
26 | { | |
27 | return 0; | |
28 | } | |
29 | ||
30 | static int test_rtc_read_time(struct device *dev, | |
31 | struct rtc_time *tm) | |
32 | { | |
33 | rtc_time_to_tm(get_seconds(), tm); | |
34 | return 0; | |
35 | } | |
36 | ||
a95579cd AZ |
37 | static int test_rtc_set_mmss(struct device *dev, unsigned long secs) |
38 | { | |
bbccf83f | 39 | dev_info(dev, "%s, secs = %lu\n", __func__, secs); |
a95579cd AZ |
40 | return 0; |
41 | } | |
42 | ||
43 | static int test_rtc_proc(struct device *dev, struct seq_file *seq) | |
44 | { | |
45 | struct platform_device *plat_dev = to_platform_device(dev); | |
46 | ||
a95579cd AZ |
47 | seq_printf(seq, "test\t\t: yes\n"); |
48 | seq_printf(seq, "id\t\t: %d\n", plat_dev->id); | |
49 | ||
50 | return 0; | |
51 | } | |
52 | ||
16380c15 | 53 | static int test_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) |
a95579cd | 54 | { |
16380c15 | 55 | return 0; |
a95579cd AZ |
56 | } |
57 | ||
ff8371ac | 58 | static const struct rtc_class_ops test_rtc_ops = { |
a95579cd AZ |
59 | .proc = test_rtc_proc, |
60 | .read_time = test_rtc_read_time, | |
a95579cd AZ |
61 | .read_alarm = test_rtc_read_alarm, |
62 | .set_alarm = test_rtc_set_alarm, | |
63 | .set_mmss = test_rtc_set_mmss, | |
16380c15 | 64 | .alarm_irq_enable = test_rtc_alarm_irq_enable, |
a95579cd AZ |
65 | }; |
66 | ||
67 | static ssize_t test_irq_show(struct device *dev, | |
68 | struct device_attribute *attr, char *buf) | |
69 | { | |
70 | return sprintf(buf, "%d\n", 42); | |
71 | } | |
72 | static ssize_t test_irq_store(struct device *dev, | |
73 | struct device_attribute *attr, | |
74 | const char *buf, size_t count) | |
75 | { | |
76 | int retval; | |
77 | struct platform_device *plat_dev = to_platform_device(dev); | |
78 | struct rtc_device *rtc = platform_get_drvdata(plat_dev); | |
79 | ||
80 | retval = count; | |
a417493e | 81 | if (strncmp(buf, "tick", 4) == 0 && rtc->pie_enabled) |
ab6a2d70 | 82 | rtc_update_irq(rtc, 1, RTC_PF | RTC_IRQF); |
a417493e MRJ |
83 | else if (strncmp(buf, "alarm", 5) == 0) { |
84 | struct rtc_wkalrm alrm; | |
85 | int err = rtc_read_alarm(rtc, &alrm); | |
86 | ||
87 | if (!err && alrm.enabled) | |
88 | rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF); | |
89 | ||
90 | } else if (strncmp(buf, "update", 6) == 0 && rtc->uie_rtctimer.enabled) | |
ab6a2d70 | 91 | rtc_update_irq(rtc, 1, RTC_UF | RTC_IRQF); |
a95579cd AZ |
92 | else |
93 | retval = -EINVAL; | |
94 | ||
95 | return retval; | |
96 | } | |
97 | static DEVICE_ATTR(irq, S_IRUGO | S_IWUSR, test_irq_show, test_irq_store); | |
98 | ||
99 | static int test_probe(struct platform_device *plat_dev) | |
100 | { | |
101 | int err; | |
102 | struct rtc_device *rtc = rtc_device_register("test", &plat_dev->dev, | |
103 | &test_rtc_ops, THIS_MODULE); | |
104 | if (IS_ERR(rtc)) { | |
105 | err = PTR_ERR(rtc); | |
a95579cd AZ |
106 | return err; |
107 | } | |
91046a8a JG |
108 | |
109 | err = device_create_file(&plat_dev->dev, &dev_attr_irq); | |
110 | if (err) | |
111 | goto err; | |
a95579cd AZ |
112 | |
113 | platform_set_drvdata(plat_dev, rtc); | |
114 | ||
115 | return 0; | |
91046a8a JG |
116 | |
117 | err: | |
118 | rtc_device_unregister(rtc); | |
119 | return err; | |
a95579cd AZ |
120 | } |
121 | ||
5a167f45 | 122 | static int test_remove(struct platform_device *plat_dev) |
a95579cd AZ |
123 | { |
124 | struct rtc_device *rtc = platform_get_drvdata(plat_dev); | |
125 | ||
126 | rtc_device_unregister(rtc); | |
127 | device_remove_file(&plat_dev->dev, &dev_attr_irq); | |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
c4646528 | 132 | static struct platform_driver test_driver = { |
a95579cd | 133 | .probe = test_probe, |
5a167f45 | 134 | .remove = test_remove, |
a95579cd AZ |
135 | .driver = { |
136 | .name = "rtc-test", | |
137 | .owner = THIS_MODULE, | |
138 | }, | |
139 | }; | |
140 | ||
141 | static int __init test_init(void) | |
142 | { | |
143 | int err; | |
144 | ||
c4646528 | 145 | if ((err = platform_driver_register(&test_driver))) |
a95579cd AZ |
146 | return err; |
147 | ||
148 | if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) { | |
149 | err = -ENOMEM; | |
150 | goto exit_driver_unregister; | |
151 | } | |
152 | ||
153 | if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) { | |
154 | err = -ENOMEM; | |
942bfb3e | 155 | goto exit_put_test0; |
a95579cd AZ |
156 | } |
157 | ||
158 | if ((err = platform_device_add(test0))) | |
942bfb3e | 159 | goto exit_put_test1; |
a95579cd AZ |
160 | |
161 | if ((err = platform_device_add(test1))) | |
942bfb3e | 162 | goto exit_del_test0; |
a95579cd AZ |
163 | |
164 | return 0; | |
165 | ||
942bfb3e WY |
166 | exit_del_test0: |
167 | platform_device_del(test0); | |
a95579cd | 168 | |
942bfb3e | 169 | exit_put_test1: |
a95579cd AZ |
170 | platform_device_put(test1); |
171 | ||
942bfb3e | 172 | exit_put_test0: |
a95579cd AZ |
173 | platform_device_put(test0); |
174 | ||
175 | exit_driver_unregister: | |
c4646528 | 176 | platform_driver_unregister(&test_driver); |
a95579cd AZ |
177 | return err; |
178 | } | |
179 | ||
180 | static void __exit test_exit(void) | |
181 | { | |
182 | platform_device_unregister(test0); | |
183 | platform_device_unregister(test1); | |
c4646528 | 184 | platform_driver_unregister(&test_driver); |
a95579cd AZ |
185 | } |
186 | ||
187 | MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); | |
188 | MODULE_DESCRIPTION("RTC test driver/device"); | |
189 | MODULE_LICENSE("GPL"); | |
190 | ||
191 | module_init(test_init); | |
192 | module_exit(test_exit); |