Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / rtc / rtc-test.c

diff --git a/kernel/drivers/rtc/rtc-test.c b/kernel/drivers/rtc/rtc-test.c
new file mode 100644 (file)
index 0000000..3a2da4c
--- /dev/null
+++ b/kernel/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);