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 | ||
37 | static int test_rtc_set_time(struct device *dev, | |
38 | struct rtc_time *tm) | |
39 | { | |
40 | return 0; | |
41 | } | |
42 | ||
43 | static int test_rtc_set_mmss(struct device *dev, unsigned long secs) | |
44 | { | |
45 | return 0; | |
46 | } | |
47 | ||
48 | static int test_rtc_proc(struct device *dev, struct seq_file *seq) | |
49 | { | |
50 | struct platform_device *plat_dev = to_platform_device(dev); | |
51 | ||
a95579cd AZ |
52 | seq_printf(seq, "test\t\t: yes\n"); |
53 | seq_printf(seq, "id\t\t: %d\n", plat_dev->id); | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static int test_rtc_ioctl(struct device *dev, unsigned int cmd, | |
59 | unsigned long arg) | |
60 | { | |
61 | /* We do support interrupts, they're generated | |
62 | * using the sysfs interface. | |
63 | */ | |
64 | switch (cmd) { | |
65 | case RTC_PIE_ON: | |
66 | case RTC_PIE_OFF: | |
67 | case RTC_UIE_ON: | |
68 | case RTC_UIE_OFF: | |
69 | case RTC_AIE_ON: | |
70 | case RTC_AIE_OFF: | |
71 | return 0; | |
72 | ||
73 | default: | |
b3969e58 | 74 | return -ENOIOCTLCMD; |
a95579cd AZ |
75 | } |
76 | } | |
77 | ||
ff8371ac | 78 | static const struct rtc_class_ops test_rtc_ops = { |
a95579cd AZ |
79 | .proc = test_rtc_proc, |
80 | .read_time = test_rtc_read_time, | |
81 | .set_time = test_rtc_set_time, | |
82 | .read_alarm = test_rtc_read_alarm, | |
83 | .set_alarm = test_rtc_set_alarm, | |
84 | .set_mmss = test_rtc_set_mmss, | |
85 | .ioctl = test_rtc_ioctl, | |
86 | }; | |
87 | ||
88 | static ssize_t test_irq_show(struct device *dev, | |
89 | struct device_attribute *attr, char *buf) | |
90 | { | |
91 | return sprintf(buf, "%d\n", 42); | |
92 | } | |
93 | static ssize_t test_irq_store(struct device *dev, | |
94 | struct device_attribute *attr, | |
95 | const char *buf, size_t count) | |
96 | { | |
97 | int retval; | |
98 | struct platform_device *plat_dev = to_platform_device(dev); | |
99 | struct rtc_device *rtc = platform_get_drvdata(plat_dev); | |
100 | ||
101 | retval = count; | |
d728b1e6 | 102 | local_irq_disable(); |
a95579cd | 103 | if (strncmp(buf, "tick", 4) == 0) |
ab6a2d70 | 104 | rtc_update_irq(rtc, 1, RTC_PF | RTC_IRQF); |
a95579cd | 105 | else if (strncmp(buf, "alarm", 5) == 0) |
ab6a2d70 | 106 | rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF); |
a95579cd | 107 | else if (strncmp(buf, "update", 6) == 0) |
ab6a2d70 | 108 | rtc_update_irq(rtc, 1, RTC_UF | RTC_IRQF); |
a95579cd AZ |
109 | else |
110 | retval = -EINVAL; | |
d728b1e6 | 111 | local_irq_enable(); |
a95579cd AZ |
112 | |
113 | return retval; | |
114 | } | |
115 | static DEVICE_ATTR(irq, S_IRUGO | S_IWUSR, test_irq_show, test_irq_store); | |
116 | ||
117 | static int test_probe(struct platform_device *plat_dev) | |
118 | { | |
119 | int err; | |
120 | struct rtc_device *rtc = rtc_device_register("test", &plat_dev->dev, | |
121 | &test_rtc_ops, THIS_MODULE); | |
122 | if (IS_ERR(rtc)) { | |
123 | err = PTR_ERR(rtc); | |
a95579cd AZ |
124 | return err; |
125 | } | |
91046a8a JG |
126 | |
127 | err = device_create_file(&plat_dev->dev, &dev_attr_irq); | |
128 | if (err) | |
129 | goto err; | |
a95579cd AZ |
130 | |
131 | platform_set_drvdata(plat_dev, rtc); | |
132 | ||
133 | return 0; | |
91046a8a JG |
134 | |
135 | err: | |
136 | rtc_device_unregister(rtc); | |
137 | return err; | |
a95579cd AZ |
138 | } |
139 | ||
140 | static int __devexit test_remove(struct platform_device *plat_dev) | |
141 | { | |
142 | struct rtc_device *rtc = platform_get_drvdata(plat_dev); | |
143 | ||
144 | rtc_device_unregister(rtc); | |
145 | device_remove_file(&plat_dev->dev, &dev_attr_irq); | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
c4646528 | 150 | static struct platform_driver test_driver = { |
a95579cd AZ |
151 | .probe = test_probe, |
152 | .remove = __devexit_p(test_remove), | |
153 | .driver = { | |
154 | .name = "rtc-test", | |
155 | .owner = THIS_MODULE, | |
156 | }, | |
157 | }; | |
158 | ||
159 | static int __init test_init(void) | |
160 | { | |
161 | int err; | |
162 | ||
c4646528 | 163 | if ((err = platform_driver_register(&test_driver))) |
a95579cd AZ |
164 | return err; |
165 | ||
166 | if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) { | |
167 | err = -ENOMEM; | |
168 | goto exit_driver_unregister; | |
169 | } | |
170 | ||
171 | if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) { | |
172 | err = -ENOMEM; | |
173 | goto exit_free_test0; | |
174 | } | |
175 | ||
176 | if ((err = platform_device_add(test0))) | |
177 | goto exit_free_test1; | |
178 | ||
179 | if ((err = platform_device_add(test1))) | |
180 | goto exit_device_unregister; | |
181 | ||
182 | return 0; | |
183 | ||
184 | exit_device_unregister: | |
185 | platform_device_unregister(test0); | |
186 | ||
187 | exit_free_test1: | |
188 | platform_device_put(test1); | |
189 | ||
190 | exit_free_test0: | |
191 | platform_device_put(test0); | |
192 | ||
193 | exit_driver_unregister: | |
c4646528 | 194 | platform_driver_unregister(&test_driver); |
a95579cd AZ |
195 | return err; |
196 | } | |
197 | ||
198 | static void __exit test_exit(void) | |
199 | { | |
200 | platform_device_unregister(test0); | |
201 | platform_device_unregister(test1); | |
c4646528 | 202 | platform_driver_unregister(&test_driver); |
a95579cd AZ |
203 | } |
204 | ||
205 | MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); | |
206 | MODULE_DESCRIPTION("RTC test driver/device"); | |
207 | MODULE_LICENSE("GPL"); | |
208 | ||
209 | module_init(test_init); | |
210 | module_exit(test_exit); |