[deliverable/linux.git] / drivers / rtc / rtc-test.c

/*
 * 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 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_time_to_tm(get_seconds(), tm);
	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 const 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;

	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",
		.owner = THIS_MODULE,
	},
};

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);
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
a95579cd AZ	37	static int test_rtc_set_mmss(struct device *dev, unsigned long secs)
a95579cd AZ	38	{
bbccf83f	39	dev_info(dev, "%s, secs = %lu\n", __func__, secs);
a95579cd AZ	40	return 0;
	41	}
	42
	43	static int test_rtc_proc(struct device dev, struct seq_file seq)
	44	{
	45	struct platform_device *plat_dev = to_platform_device(dev);
	46
a95579cd AZ	47	seq_printf(seq, "test\t\t: yes\n");
	48	seq_printf(seq, "id\t\t: %d\n", plat_dev->id);
	49
	50	return 0;
	51	}
	52
16380c15	53	static int test_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
a95579cd	54	{
16380c15	55	return 0;
a95579cd AZ	56	}
a95579cd AZ	57
ff8371ac	58	static const struct rtc_class_ops test_rtc_ops = {
a95579cd AZ	59	.proc = test_rtc_proc,
a95579cd AZ	60	.read_time = test_rtc_read_time,
a95579cd AZ	61	.read_alarm = test_rtc_read_alarm,
	62	.set_alarm = test_rtc_set_alarm,
	63	.set_mmss = test_rtc_set_mmss,
16380c15	64	.alarm_irq_enable = test_rtc_alarm_irq_enable,
a95579cd AZ	65	};
	66
	67	static ssize_t test_irq_show(struct device *dev,
	68	struct device_attribute attr, char buf)
	69	{
	70	return sprintf(buf, "%d\n", 42);
	71	}
	72	static ssize_t test_irq_store(struct device *dev,
	73	struct device_attribute *attr,
	74	const char *buf, size_t count)
	75	{
	76	int retval;
	77	struct platform_device *plat_dev = to_platform_device(dev);
	78	struct rtc_device *rtc = platform_get_drvdata(plat_dev);
	79
	80	retval = count;
a417493e	81	if (strncmp(buf, "tick", 4) == 0 && rtc->pie_enabled)
ab6a2d70	82	rtc_update_irq(rtc, 1, RTC_PF \| RTC_IRQF);
a417493e MRJ	83	else if (strncmp(buf, "alarm", 5) == 0) {
	84	struct rtc_wkalrm alrm;
	85	int err = rtc_read_alarm(rtc, &alrm);
	86
	87	if (!err && alrm.enabled)
	88	rtc_update_irq(rtc, 1, RTC_AF \| RTC_IRQF);
	89
	90	} else if (strncmp(buf, "update", 6) == 0 && rtc->uie_rtctimer.enabled)
ab6a2d70	91	rtc_update_irq(rtc, 1, RTC_UF \| RTC_IRQF);
a95579cd AZ	92	else
	93	retval = -EINVAL;
	94
	95	return retval;
	96	}
	97	static DEVICE_ATTR(irq, S_IRUGO \| S_IWUSR, test_irq_show, test_irq_store);
	98
	99	static int test_probe(struct platform_device *plat_dev)
	100	{
	101	int err;
dd8d8137 JH	102	struct rtc_device *rtc;
	103
	104	rtc = devm_rtc_device_register(&plat_dev->dev, "test",
	105	&test_rtc_ops, THIS_MODULE);
a95579cd	106	if (IS_ERR(rtc)) {
4071ea25	107	return PTR_ERR(rtc);
a95579cd	108	}
91046a8a JG	109
	110	err = device_create_file(&plat_dev->dev, &dev_attr_irq);
	111	if (err)
4071ea25 AZ	112	dev_err(&plat_dev->dev, "Unable to create sysfs entry: %s\n",
4071ea25 AZ	113	dev_attr_irq.attr.name);
a95579cd AZ	114
	115	platform_set_drvdata(plat_dev, rtc);
	116
	117	return 0;
	118	}
	119
5a167f45	120	static int test_remove(struct platform_device *plat_dev)
a95579cd	121	{
a95579cd AZ	122	device_remove_file(&plat_dev->dev, &dev_attr_irq);
	123
	124	return 0;
	125	}
	126
c4646528	127	static struct platform_driver test_driver = {
a95579cd	128	.probe = test_probe,
5a167f45	129	.remove = test_remove,
a95579cd AZ	130	.driver = {
	131	.name = "rtc-test",
	132	.owner = THIS_MODULE,
	133	},
	134	};
	135
	136	static int __init test_init(void)
	137	{
	138	int err;
	139
c4646528	140	if ((err = platform_driver_register(&test_driver)))
a95579cd AZ	141	return err;
	142
	143	if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) {
	144	err = -ENOMEM;
	145	goto exit_driver_unregister;
	146	}
	147
	148	if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) {
	149	err = -ENOMEM;
942bfb3e	150	goto exit_put_test0;
a95579cd AZ	151	}
	152
	153	if ((err = platform_device_add(test0)))
942bfb3e	154	goto exit_put_test1;
a95579cd AZ	155
a95579cd AZ	156	if ((err = platform_device_add(test1)))
942bfb3e	157	goto exit_del_test0;
a95579cd AZ	158
	159	return 0;
	160
942bfb3e WY	161	exit_del_test0:
942bfb3e WY	162	platform_device_del(test0);
a95579cd	163
942bfb3e	164	exit_put_test1:
a95579cd AZ	165	platform_device_put(test1);
a95579cd AZ	166
942bfb3e	167	exit_put_test0:
a95579cd AZ	168	platform_device_put(test0);
	169
	170	exit_driver_unregister:
c4646528	171	platform_driver_unregister(&test_driver);
a95579cd AZ	172	return err;
	173	}
	174
	175	static void __exit test_exit(void)
	176	{
	177	platform_device_unregister(test0);
	178	platform_device_unregister(test1);
c4646528	179	platform_driver_unregister(&test_driver);
a95579cd AZ	180	}
	181
	182	MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
	183	MODULE_DESCRIPTION("RTC test driver/device");
	184	MODULE_LICENSE("GPL");
	185
	186	module_init(test_init);
	187	module_exit(test_exit);