[net-next-2.6.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_ioctl(struct device *dev, unsigned int cmd,
	unsigned long arg)
{
	/* We do support interrupts, they're generated
	 * using the sysfs interface.
	 */
	switch (cmd) {
	case RTC_PIE_ON:
	case RTC_PIE_OFF:
	case RTC_UIE_ON:
	case RTC_UIE_OFF:
	case RTC_AIE_ON:
	case RTC_AIE_OFF:
		return 0;

	default:
		return -ENOIOCTLCMD;
	}
}

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,
	.ioctl = test_rtc_ioctl,
};

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_update_irq(rtc, 1, RTC_PF | RTC_IRQF);
	else if (strncmp(buf, "alarm", 5) == 0)
		rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF);
	else if (strncmp(buf, "update", 6) == 0)
		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_device_register("test", &plat_dev->dev,
						&test_rtc_ops, THIS_MODULE);
	if (IS_ERR(rtc)) {
		err = PTR_ERR(rtc);
		return err;
	}

	err = device_create_file(&plat_dev->dev, &dev_attr_irq);
	if (err)
		goto err;

	platform_set_drvdata(plat_dev, rtc);

	return 0;

err:
	rtc_device_unregister(rtc);
	return err;
}

static int __devexit test_remove(struct platform_device *plat_dev)
{
	struct rtc_device *rtc = platform_get_drvdata(plat_dev);

	rtc_device_unregister(rtc);
	device_remove_file(&plat_dev->dev, &dev_attr_irq);

	return 0;
}

static struct platform_driver test_driver = {
	.probe	= test_probe,
	.remove = __devexit_p(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_free_test0;
	}

	if ((err = platform_device_add(test0)))
		goto exit_free_test1;

	if ((err = platform_device_add(test1)))
		goto exit_device_unregister;

	return 0;

exit_device_unregister:
	platform_device_unregister(test0);

exit_free_test1:
	platform_device_put(test1);

exit_free_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
	53	static int test_rtc_ioctl(struct device *dev, unsigned int cmd,
	54	unsigned long arg)
	55	{
	56	/* We do support interrupts, they're generated
	57	* using the sysfs interface.
	58	*/
	59	switch (cmd) {
	60	case RTC_PIE_ON:
	61	case RTC_PIE_OFF:
	62	case RTC_UIE_ON:
	63	case RTC_UIE_OFF:
	64	case RTC_AIE_ON:
	65	case RTC_AIE_OFF:
	66	return 0;
	67
	68	default:
b3969e58	69	return -ENOIOCTLCMD;
a95579cd AZ	70	}
	71	}
	72
ff8371ac	73	static const struct rtc_class_ops test_rtc_ops = {
a95579cd AZ	74	.proc = test_rtc_proc,
a95579cd AZ	75	.read_time = test_rtc_read_time,
a95579cd AZ	76	.read_alarm = test_rtc_read_alarm,
	77	.set_alarm = test_rtc_set_alarm,
	78	.set_mmss = test_rtc_set_mmss,
	79	.ioctl = test_rtc_ioctl,
	80	};
	81
	82	static ssize_t test_irq_show(struct device *dev,
	83	struct device_attribute attr, char buf)
	84	{
	85	return sprintf(buf, "%d\n", 42);
	86	}
	87	static ssize_t test_irq_store(struct device *dev,
	88	struct device_attribute *attr,
	89	const char *buf, size_t count)
	90	{
	91	int retval;
	92	struct platform_device *plat_dev = to_platform_device(dev);
	93	struct rtc_device *rtc = platform_get_drvdata(plat_dev);
	94
	95	retval = count;
	96	if (strncmp(buf, "tick", 4) == 0)
ab6a2d70	97	rtc_update_irq(rtc, 1, RTC_PF \| RTC_IRQF);
a95579cd	98	else if (strncmp(buf, "alarm", 5) == 0)
ab6a2d70	99	rtc_update_irq(rtc, 1, RTC_AF \| RTC_IRQF);
a95579cd	100	else if (strncmp(buf, "update", 6) == 0)
ab6a2d70	101	rtc_update_irq(rtc, 1, RTC_UF \| RTC_IRQF);
a95579cd AZ	102	else
	103	retval = -EINVAL;
	104
	105	return retval;
	106	}
	107	static DEVICE_ATTR(irq, S_IRUGO \| S_IWUSR, test_irq_show, test_irq_store);
	108
	109	static int test_probe(struct platform_device *plat_dev)
	110	{
	111	int err;
	112	struct rtc_device *rtc = rtc_device_register("test", &plat_dev->dev,
	113	&test_rtc_ops, THIS_MODULE);
	114	if (IS_ERR(rtc)) {
	115	err = PTR_ERR(rtc);
a95579cd AZ	116	return err;
a95579cd AZ	117	}
91046a8a JG	118
	119	err = device_create_file(&plat_dev->dev, &dev_attr_irq);
	120	if (err)
	121	goto err;
a95579cd AZ	122
	123	platform_set_drvdata(plat_dev, rtc);
	124
	125	return 0;
91046a8a JG	126
	127	err:
	128	rtc_device_unregister(rtc);
	129	return err;
a95579cd AZ	130	}
	131
	132	static int __devexit test_remove(struct platform_device *plat_dev)
	133	{
	134	struct rtc_device *rtc = platform_get_drvdata(plat_dev);
	135
	136	rtc_device_unregister(rtc);
	137	device_remove_file(&plat_dev->dev, &dev_attr_irq);
	138
	139	return 0;
	140	}
	141
c4646528	142	static struct platform_driver test_driver = {
a95579cd AZ	143	.probe = test_probe,
	144	.remove = __devexit_p(test_remove),
	145	.driver = {
	146	.name = "rtc-test",
	147	.owner = THIS_MODULE,
	148	},
	149	};
	150
	151	static int __init test_init(void)
	152	{
	153	int err;
	154
c4646528	155	if ((err = platform_driver_register(&test_driver)))
a95579cd AZ	156	return err;
	157
	158	if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) {
	159	err = -ENOMEM;
	160	goto exit_driver_unregister;
	161	}
	162
	163	if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) {
	164	err = -ENOMEM;
	165	goto exit_free_test0;
	166	}
	167
	168	if ((err = platform_device_add(test0)))
	169	goto exit_free_test1;
	170
	171	if ((err = platform_device_add(test1)))
	172	goto exit_device_unregister;
	173
	174	return 0;
	175
	176	exit_device_unregister:
	177	platform_device_unregister(test0);
	178
	179	exit_free_test1:
	180	platform_device_put(test1);
	181
	182	exit_free_test0:
	183	platform_device_put(test0);
	184
	185	exit_driver_unregister:
c4646528	186	platform_driver_unregister(&test_driver);
a95579cd AZ	187	return err;
	188	}
	189
	190	static void __exit test_exit(void)
	191	{
	192	platform_device_unregister(test0);
	193	platform_device_unregister(test1);
c4646528	194	platform_driver_unregister(&test_driver);
a95579cd AZ	195	}
	196
	197	MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
	198	MODULE_DESCRIPTION("RTC test driver/device");
	199	MODULE_LICENSE("GPL");
	200
	201	module_init(test_init);
	202	module_exit(test_exit);