Blame view
drivers/rtc/rtc-test.c
4.47 KB
81f7e3824 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 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 |
/* * An RTC test device/driver * Copyright (C) 2005 Tower Technologies * Author: Alessandro Zummo <a.zummo@towertech.it> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/err.h> #include <linux/rtc.h> #include <linux/platform_device.h> static int test_mmss64; module_param(test_mmss64, int, 0644); MODULE_PARM_DESC(test_mmss64, "Test struct rtc_class_ops.set_mmss64()."); static struct platform_device *test0 = NULL, *test1 = NULL; static int test_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) { return 0; } static int test_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) { return 0; } static int test_rtc_read_time(struct device *dev, struct rtc_time *tm) { rtc_time64_to_tm(ktime_get_real_seconds(), tm); return 0; } static int test_rtc_set_mmss64(struct device *dev, time64_t secs) { dev_info(dev, "%s, secs = %lld ", __func__, (long long)secs); return 0; } static int test_rtc_set_mmss(struct device *dev, unsigned long secs) { dev_info(dev, "%s, secs = %lu ", __func__, secs); return 0; } static int test_rtc_proc(struct device *dev, struct seq_file *seq) { struct platform_device *plat_dev = to_platform_device(dev); seq_printf(seq, "test\t\t: yes "); seq_printf(seq, "id\t\t: %d ", plat_dev->id); return 0; } static int test_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) { return 0; } static struct rtc_class_ops test_rtc_ops = { .proc = test_rtc_proc, .read_time = test_rtc_read_time, .read_alarm = test_rtc_read_alarm, .set_alarm = test_rtc_set_alarm, .set_mmss = test_rtc_set_mmss, .alarm_irq_enable = test_rtc_alarm_irq_enable, }; static ssize_t test_irq_show(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "%d ", 42); } static ssize_t test_irq_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int retval; struct platform_device *plat_dev = to_platform_device(dev); struct rtc_device *rtc = platform_get_drvdata(plat_dev); retval = count; if (strncmp(buf, "tick", 4) == 0 && rtc->pie_enabled) rtc_update_irq(rtc, 1, RTC_PF | RTC_IRQF); else if (strncmp(buf, "alarm", 5) == 0) { struct rtc_wkalrm alrm; int err = rtc_read_alarm(rtc, &alrm); if (!err && alrm.enabled) rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF); } else if (strncmp(buf, "update", 6) == 0 && rtc->uie_rtctimer.enabled) rtc_update_irq(rtc, 1, RTC_UF | RTC_IRQF); else retval = -EINVAL; return retval; } static DEVICE_ATTR(irq, S_IRUGO | S_IWUSR, test_irq_show, test_irq_store); static int test_probe(struct platform_device *plat_dev) { int err; struct rtc_device *rtc; if (test_mmss64) { test_rtc_ops.set_mmss64 = test_rtc_set_mmss64; test_rtc_ops.set_mmss = NULL; } rtc = devm_rtc_device_register(&plat_dev->dev, "test", &test_rtc_ops, THIS_MODULE); if (IS_ERR(rtc)) { return PTR_ERR(rtc); } err = device_create_file(&plat_dev->dev, &dev_attr_irq); if (err) dev_err(&plat_dev->dev, "Unable to create sysfs entry: %s ", dev_attr_irq.attr.name); platform_set_drvdata(plat_dev, rtc); return 0; } static int test_remove(struct platform_device *plat_dev) { device_remove_file(&plat_dev->dev, &dev_attr_irq); return 0; } static struct platform_driver test_driver = { .probe = test_probe, .remove = test_remove, .driver = { .name = "rtc-test", }, }; static int __init test_init(void) { int err; if ((err = platform_driver_register(&test_driver))) return err; if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) { err = -ENOMEM; goto exit_driver_unregister; } if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) { err = -ENOMEM; goto exit_put_test0; } if ((err = platform_device_add(test0))) goto exit_put_test1; if ((err = platform_device_add(test1))) goto exit_del_test0; return 0; exit_del_test0: platform_device_del(test0); exit_put_test1: platform_device_put(test1); exit_put_test0: platform_device_put(test0); exit_driver_unregister: platform_driver_unregister(&test_driver); return err; } static void __exit test_exit(void) { platform_device_unregister(test0); platform_device_unregister(test1); platform_driver_unregister(&test_driver); } MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); MODULE_DESCRIPTION("RTC test driver/device"); MODULE_LICENSE("GPL"); module_init(test_init); module_exit(test_exit); |