Commit | Line | Data |
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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 | ||
4d644ab8 XP |
16 | static int test_mmss64; |
17 | module_param(test_mmss64, int, 0644); | |
18 | MODULE_PARM_DESC(test_mmss64, "Test struct rtc_class_ops.set_mmss64()."); | |
19 | ||
a95579cd AZ |
20 | static struct platform_device *test0 = NULL, *test1 = NULL; |
21 | ||
22 | static int test_rtc_read_alarm(struct device *dev, | |
23 | struct rtc_wkalrm *alrm) | |
24 | { | |
25 | return 0; | |
26 | } | |
27 | ||
28 | static int test_rtc_set_alarm(struct device *dev, | |
29 | struct rtc_wkalrm *alrm) | |
30 | { | |
31 | return 0; | |
32 | } | |
33 | ||
34 | static int test_rtc_read_time(struct device *dev, | |
35 | struct rtc_time *tm) | |
36 | { | |
4d644ab8 XP |
37 | rtc_time64_to_tm(ktime_get_real_seconds(), tm); |
38 | return 0; | |
39 | } | |
40 | ||
41 | static int test_rtc_set_mmss64(struct device *dev, time64_t secs) | |
42 | { | |
43 | dev_info(dev, "%s, secs = %lld\n", __func__, (long long)secs); | |
a95579cd AZ |
44 | return 0; |
45 | } | |
46 | ||
a95579cd AZ |
47 | static int test_rtc_set_mmss(struct device *dev, unsigned long secs) |
48 | { | |
bbccf83f | 49 | dev_info(dev, "%s, secs = %lu\n", __func__, secs); |
a95579cd AZ |
50 | return 0; |
51 | } | |
52 | ||
53 | static int test_rtc_proc(struct device *dev, struct seq_file *seq) | |
54 | { | |
55 | struct platform_device *plat_dev = to_platform_device(dev); | |
56 | ||
a95579cd AZ |
57 | seq_printf(seq, "test\t\t: yes\n"); |
58 | seq_printf(seq, "id\t\t: %d\n", plat_dev->id); | |
59 | ||
60 | return 0; | |
61 | } | |
62 | ||
16380c15 | 63 | static int test_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) |
a95579cd | 64 | { |
16380c15 | 65 | return 0; |
a95579cd AZ |
66 | } |
67 | ||
4d644ab8 | 68 | static struct rtc_class_ops test_rtc_ops = { |
a95579cd AZ |
69 | .proc = test_rtc_proc, |
70 | .read_time = test_rtc_read_time, | |
a95579cd AZ |
71 | .read_alarm = test_rtc_read_alarm, |
72 | .set_alarm = test_rtc_set_alarm, | |
73 | .set_mmss = test_rtc_set_mmss, | |
16380c15 | 74 | .alarm_irq_enable = test_rtc_alarm_irq_enable, |
a95579cd AZ |
75 | }; |
76 | ||
77 | static ssize_t test_irq_show(struct device *dev, | |
78 | struct device_attribute *attr, char *buf) | |
79 | { | |
80 | return sprintf(buf, "%d\n", 42); | |
81 | } | |
82 | static ssize_t test_irq_store(struct device *dev, | |
83 | struct device_attribute *attr, | |
84 | const char *buf, size_t count) | |
85 | { | |
86 | int retval; | |
87 | struct platform_device *plat_dev = to_platform_device(dev); | |
88 | struct rtc_device *rtc = platform_get_drvdata(plat_dev); | |
89 | ||
90 | retval = count; | |
a417493e | 91 | if (strncmp(buf, "tick", 4) == 0 && rtc->pie_enabled) |
ab6a2d70 | 92 | rtc_update_irq(rtc, 1, RTC_PF | RTC_IRQF); |
a417493e MRJ |
93 | else if (strncmp(buf, "alarm", 5) == 0) { |
94 | struct rtc_wkalrm alrm; | |
95 | int err = rtc_read_alarm(rtc, &alrm); | |
96 | ||
97 | if (!err && alrm.enabled) | |
98 | rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF); | |
99 | ||
100 | } else if (strncmp(buf, "update", 6) == 0 && rtc->uie_rtctimer.enabled) | |
ab6a2d70 | 101 | rtc_update_irq(rtc, 1, RTC_UF | RTC_IRQF); |
a95579cd AZ |
102 | else |
103 | retval = -EINVAL; | |
104 | ||
105 | return retval; | |
106 | } | |
107 | static DEVICE_ATTR(irq, S_IRUGO | S_IWUSR, test_irq_show, test_irq_store); | |
108 | ||
109 | static int test_probe(struct platform_device *plat_dev) | |
110 | { | |
111 | int err; | |
dd8d8137 JH |
112 | struct rtc_device *rtc; |
113 | ||
4d644ab8 XP |
114 | if (test_mmss64) { |
115 | test_rtc_ops.set_mmss64 = test_rtc_set_mmss64; | |
116 | test_rtc_ops.set_mmss = NULL; | |
117 | } | |
118 | ||
dd8d8137 JH |
119 | rtc = devm_rtc_device_register(&plat_dev->dev, "test", |
120 | &test_rtc_ops, THIS_MODULE); | |
a95579cd | 121 | if (IS_ERR(rtc)) { |
4071ea25 | 122 | return PTR_ERR(rtc); |
a95579cd | 123 | } |
91046a8a JG |
124 | |
125 | err = device_create_file(&plat_dev->dev, &dev_attr_irq); | |
126 | if (err) | |
4071ea25 AZ |
127 | dev_err(&plat_dev->dev, "Unable to create sysfs entry: %s\n", |
128 | dev_attr_irq.attr.name); | |
a95579cd AZ |
129 | |
130 | platform_set_drvdata(plat_dev, rtc); | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
5a167f45 | 135 | static int test_remove(struct platform_device *plat_dev) |
a95579cd | 136 | { |
a95579cd AZ |
137 | device_remove_file(&plat_dev->dev, &dev_attr_irq); |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
c4646528 | 142 | static struct platform_driver test_driver = { |
a95579cd | 143 | .probe = test_probe, |
5a167f45 | 144 | .remove = test_remove, |
a95579cd AZ |
145 | .driver = { |
146 | .name = "rtc-test", | |
a95579cd AZ |
147 | }, |
148 | }; | |
149 | ||
150 | static int __init test_init(void) | |
151 | { | |
152 | int err; | |
153 | ||
c4646528 | 154 | if ((err = platform_driver_register(&test_driver))) |
a95579cd AZ |
155 | return err; |
156 | ||
157 | if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) { | |
158 | err = -ENOMEM; | |
159 | goto exit_driver_unregister; | |
160 | } | |
161 | ||
162 | if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) { | |
163 | err = -ENOMEM; | |
942bfb3e | 164 | goto exit_put_test0; |
a95579cd AZ |
165 | } |
166 | ||
167 | if ((err = platform_device_add(test0))) | |
942bfb3e | 168 | goto exit_put_test1; |
a95579cd AZ |
169 | |
170 | if ((err = platform_device_add(test1))) | |
942bfb3e | 171 | goto exit_del_test0; |
a95579cd AZ |
172 | |
173 | return 0; | |
174 | ||
942bfb3e WY |
175 | exit_del_test0: |
176 | platform_device_del(test0); | |
a95579cd | 177 | |
942bfb3e | 178 | exit_put_test1: |
a95579cd AZ |
179 | platform_device_put(test1); |
180 | ||
942bfb3e | 181 | exit_put_test0: |
a95579cd AZ |
182 | platform_device_put(test0); |
183 | ||
184 | exit_driver_unregister: | |
c4646528 | 185 | platform_driver_unregister(&test_driver); |
a95579cd AZ |
186 | return err; |
187 | } | |
188 | ||
189 | static void __exit test_exit(void) | |
190 | { | |
191 | platform_device_unregister(test0); | |
192 | platform_device_unregister(test1); | |
c4646528 | 193 | platform_driver_unregister(&test_driver); |
a95579cd AZ |
194 | } |
195 | ||
196 | MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); | |
197 | MODULE_DESCRIPTION("RTC test driver/device"); | |
198 | MODULE_LICENSE("GPL"); | |
199 | ||
200 | module_init(test_init); | |
201 | module_exit(test_exit); |