diff options
Diffstat (limited to 'drivers/rtc/rtc-test.c')
| -rw-r--r-- | drivers/rtc/rtc-test.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c new file mode 100644 index 000000000..3a2da4c89 --- /dev/null +++ b/drivers/rtc/rtc-test.c @@ -0,0 +1,201 @@ +/* + * 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\n", __func__, (long long)secs); + return 0; +} + +static int test_rtc_set_mmss(struct device *dev, unsigned long secs) +{ + dev_info(dev, "%s, secs = %lu\n", __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\n"); + seq_printf(seq, "id\t\t: %d\n", 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\n", 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\n", + 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); |