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authorPaul Mackerras <paulus@samba.org>2006-03-28 21:24:50 -0500
committerPaul Mackerras <paulus@samba.org>2006-03-28 21:24:50 -0500
commitbac30d1a78d0f11c613968fc8b351a91ed465386 (patch)
treee52f3c876522a2f6047a6ec1c27df2e8a79486b8 /drivers/rtc/rtc-test.c
parente8222502ee6157e2713da9e0792c21f4ad458d50 (diff)
parentca9ba4471c1203bb6e759b76e83167fec54fe590 (diff)
Merge ../linux-2.6
Diffstat (limited to 'drivers/rtc/rtc-test.c')
-rw-r--r--drivers/rtc/rtc-test.c204
1 files changed, 204 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c
new file mode 100644
index 000000000000..43d107487820
--- /dev/null
+++ b/drivers/rtc/rtc-test.c
@@ -0,0 +1,204 @@
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
16static struct platform_device *test0 = NULL, *test1 = NULL;
17
18static int test_rtc_read_alarm(struct device *dev,
19 struct rtc_wkalrm *alrm)
20{
21 return 0;
22}
23
24static int test_rtc_set_alarm(struct device *dev,
25 struct rtc_wkalrm *alrm)
26{
27 return 0;
28}
29
30static 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
37static int test_rtc_set_time(struct device *dev,
38 struct rtc_time *tm)
39{
40 return 0;
41}
42
43static int test_rtc_set_mmss(struct device *dev, unsigned long secs)
44{
45 return 0;
46}
47
48static int test_rtc_proc(struct device *dev, struct seq_file *seq)
49{
50 struct platform_device *plat_dev = to_platform_device(dev);
51
52 seq_printf(seq, "24hr\t\t: yes\n");
53 seq_printf(seq, "test\t\t: yes\n");
54 seq_printf(seq, "id\t\t: %d\n", plat_dev->id);
55
56 return 0;
57}
58
59static int test_rtc_ioctl(struct device *dev, unsigned int cmd,
60 unsigned long arg)
61{
62 /* We do support interrupts, they're generated
63 * using the sysfs interface.
64 */
65 switch (cmd) {
66 case RTC_PIE_ON:
67 case RTC_PIE_OFF:
68 case RTC_UIE_ON:
69 case RTC_UIE_OFF:
70 case RTC_AIE_ON:
71 case RTC_AIE_OFF:
72 return 0;
73
74 default:
75 return -EINVAL;
76 }
77}
78
79static struct rtc_class_ops test_rtc_ops = {
80 .proc = test_rtc_proc,
81 .read_time = test_rtc_read_time,
82 .set_time = test_rtc_set_time,
83 .read_alarm = test_rtc_read_alarm,
84 .set_alarm = test_rtc_set_alarm,
85 .set_mmss = test_rtc_set_mmss,
86 .ioctl = test_rtc_ioctl,
87};
88
89static ssize_t test_irq_show(struct device *dev,
90 struct device_attribute *attr, char *buf)
91{
92 return sprintf(buf, "%d\n", 42);
93}
94static ssize_t test_irq_store(struct device *dev,
95 struct device_attribute *attr,
96 const char *buf, size_t count)
97{
98 int retval;
99 struct platform_device *plat_dev = to_platform_device(dev);
100 struct rtc_device *rtc = platform_get_drvdata(plat_dev);
101
102 retval = count;
103 if (strncmp(buf, "tick", 4) == 0)
104 rtc_update_irq(&rtc->class_dev, 1, RTC_PF | RTC_IRQF);
105 else if (strncmp(buf, "alarm", 5) == 0)
106 rtc_update_irq(&rtc->class_dev, 1, RTC_AF | RTC_IRQF);
107 else if (strncmp(buf, "update", 6) == 0)
108 rtc_update_irq(&rtc->class_dev, 1, RTC_UF | RTC_IRQF);
109 else
110 retval = -EINVAL;
111
112 return retval;
113}
114static DEVICE_ATTR(irq, S_IRUGO | S_IWUSR, test_irq_show, test_irq_store);
115
116static int test_probe(struct platform_device *plat_dev)
117{
118 int err;
119 struct rtc_device *rtc = rtc_device_register("test", &plat_dev->dev,
120 &test_rtc_ops, THIS_MODULE);
121 if (IS_ERR(rtc)) {
122 err = PTR_ERR(rtc);
123 dev_err(&plat_dev->dev,
124 "unable to register the class device\n");
125 return err;
126 }
127 device_create_file(&plat_dev->dev, &dev_attr_irq);
128
129 platform_set_drvdata(plat_dev, rtc);
130
131 return 0;
132}
133
134static int __devexit test_remove(struct platform_device *plat_dev)
135{
136 struct rtc_device *rtc = platform_get_drvdata(plat_dev);
137
138 rtc_device_unregister(rtc);
139 device_remove_file(&plat_dev->dev, &dev_attr_irq);
140
141 return 0;
142}
143
144static struct platform_driver test_drv = {
145 .probe = test_probe,
146 .remove = __devexit_p(test_remove),
147 .driver = {
148 .name = "rtc-test",
149 .owner = THIS_MODULE,
150 },
151};
152
153static int __init test_init(void)
154{
155 int err;
156
157 if ((err = platform_driver_register(&test_drv)))
158 return err;
159
160 if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) {
161 err = -ENOMEM;
162 goto exit_driver_unregister;
163 }
164
165 if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) {
166 err = -ENOMEM;
167 goto exit_free_test0;
168 }
169
170 if ((err = platform_device_add(test0)))
171 goto exit_free_test1;
172
173 if ((err = platform_device_add(test1)))
174 goto exit_device_unregister;
175
176 return 0;
177
178exit_device_unregister:
179 platform_device_unregister(test0);
180
181exit_free_test1:
182 platform_device_put(test1);
183
184exit_free_test0:
185 platform_device_put(test0);
186
187exit_driver_unregister:
188 platform_driver_unregister(&test_drv);
189 return err;
190}
191
192static void __exit test_exit(void)
193{
194 platform_device_unregister(test0);
195 platform_device_unregister(test1);
196 platform_driver_unregister(&test_drv);
197}
198
199MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
200MODULE_DESCRIPTION("RTC test driver/device");
201MODULE_LICENSE("GPL");
202
203module_init(test_init);
204module_exit(test_exit);