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

/*
 * An RTC test device/driver
 * Copyright (C) 2005 Tower Technologies
 * Author: Alessandro Zummo <[email protected]>
 *
 * 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_time(struct device *dev,
	struct rtc_time *tm)
{
	return 0;
}

static int test_rtc_set_mmss(struct device *dev, unsigned long 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 struct rtc_class_ops test_rtc_ops = {
	.proc = test_rtc_proc,
	.read_time = test_rtc_read_time,
	.set_time = test_rtc_set_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->class_dev, 1, RTC_PF | RTC_IRQF);
	else if (strncmp(buf, "alarm", 5) == 0)
		rtc_update_irq(&rtc->class_dev, 1, RTC_AF | RTC_IRQF);
	else if (strncmp(buf, "update", 6) == 0)
		rtc_update_irq(&rtc->class_dev, 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;
	}
	device_create_file(&plat_dev->dev, &dev_attr_irq);

	platform_set_drvdata(plat_dev, rtc);

	return 0;
}

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_drv = {
	.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_drv)))
		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_drv);
	return err;
}

static void __exit test_exit(void)
{
	platform_device_unregister(test0);
	platform_device_unregister(test1);
	platform_driver_unregister(&test_drv);
}

MODULE_AUTHOR("Alessandro Zummo <[email protected]>");
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 <[email protected]>
	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
	37	static int test_rtc_set_time(struct device *dev,
	38	struct rtc_time *tm)
	39	{
	40	return 0;
	41	}
	42
	43	static int test_rtc_set_mmss(struct device *dev, unsigned long secs)
	44	{
	45	return 0;
	46	}
	47
	48	static int test_rtc_proc(struct device dev, struct seq_file seq)
	49	{
	50	struct platform_device *plat_dev = to_platform_device(dev);
	51
a95579cd AZ	52	seq_printf(seq, "test\t\t: yes\n");
	53	seq_printf(seq, "id\t\t: %d\n", plat_dev->id);
	54
	55	return 0;
	56	}
	57
	58	static int test_rtc_ioctl(struct device *dev, unsigned int cmd,
	59	unsigned long arg)
	60	{
	61	/* We do support interrupts, they're generated
	62	* using the sysfs interface.
	63	*/
	64	switch (cmd) {
	65	case RTC_PIE_ON:
	66	case RTC_PIE_OFF:
	67	case RTC_UIE_ON:
	68	case RTC_UIE_OFF:
	69	case RTC_AIE_ON:
	70	case RTC_AIE_OFF:
	71	return 0;
	72
	73	default:
b3969e58	74	return -ENOIOCTLCMD;
a95579cd AZ	75	}
	76	}
	77
	78	static struct rtc_class_ops test_rtc_ops = {
	79	.proc = test_rtc_proc,
	80	.read_time = test_rtc_read_time,
	81	.set_time = test_rtc_set_time,
	82	.read_alarm = test_rtc_read_alarm,
	83	.set_alarm = test_rtc_set_alarm,
	84	.set_mmss = test_rtc_set_mmss,
	85	.ioctl = test_rtc_ioctl,
	86	};
	87
	88	static ssize_t test_irq_show(struct device *dev,
	89	struct device_attribute attr, char buf)
	90	{
	91	return sprintf(buf, "%d\n", 42);
	92	}
	93	static ssize_t test_irq_store(struct device *dev,
	94	struct device_attribute *attr,
	95	const char *buf, size_t count)
	96	{
	97	int retval;
	98	struct platform_device *plat_dev = to_platform_device(dev);
	99	struct rtc_device *rtc = platform_get_drvdata(plat_dev);
	100
	101	retval = count;
	102	if (strncmp(buf, "tick", 4) == 0)
	103	rtc_update_irq(&rtc->class_dev, 1, RTC_PF \| RTC_IRQF);
	104	else if (strncmp(buf, "alarm", 5) == 0)
	105	rtc_update_irq(&rtc->class_dev, 1, RTC_AF \| RTC_IRQF);
	106	else if (strncmp(buf, "update", 6) == 0)
	107	rtc_update_irq(&rtc->class_dev, 1, RTC_UF \| RTC_IRQF);
	108	else
	109	retval = -EINVAL;
	110
	111	return retval;
	112	}
	113	static DEVICE_ATTR(irq, S_IRUGO \| S_IWUSR, test_irq_show, test_irq_store);
	114
	115	static int test_probe(struct platform_device *plat_dev)
	116	{
	117	int err;
	118	struct rtc_device *rtc = rtc_device_register("test", &plat_dev->dev,
	119	&test_rtc_ops, THIS_MODULE);
	120	if (IS_ERR(rtc)) {
	121	err = PTR_ERR(rtc);
a95579cd AZ	122	return err;
	123	}
	124	device_create_file(&plat_dev->dev, &dev_attr_irq);
	125
	126	platform_set_drvdata(plat_dev, rtc);
	127
	128	return 0;
	129	}
	130
	131	static int __devexit test_remove(struct platform_device *plat_dev)
	132	{
	133	struct rtc_device *rtc = platform_get_drvdata(plat_dev);
	134
	135	rtc_device_unregister(rtc);
	136	device_remove_file(&plat_dev->dev, &dev_attr_irq);
	137
	138	return 0;
	139	}
	140
	141	static struct platform_driver test_drv = {
	142	.probe = test_probe,
	143	.remove = __devexit_p(test_remove),
	144	.driver = {
	145	.name = "rtc-test",
	146	.owner = THIS_MODULE,
	147	},
	148	};
	149
	150	static int __init test_init(void)
	151	{
	152	int err;
	153
	154	if ((err = platform_driver_register(&test_drv)))
	155	return err;
	156
	157	if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) {
	158	err = -ENOMEM;
	159	goto exit_driver_unregister;
	160	}
	161
	162	if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) {
	163	err = -ENOMEM;
	164	goto exit_free_test0;
	165	}
	166
	167	if ((err = platform_device_add(test0)))
	168	goto exit_free_test1;
	169
	170	if ((err = platform_device_add(test1)))
	171	goto exit_device_unregister;
	172
	173	return 0;
	174
	175	exit_device_unregister:
	176	platform_device_unregister(test0);
	177
	178	exit_free_test1:
	179	platform_device_put(test1);
	180
	181	exit_free_test0:
	182	platform_device_put(test0);
	183
	184	exit_driver_unregister:
	185	platform_driver_unregister(&test_drv);
186	return err;
187	}
188
189	static void __exit test_exit(void)
190	{
191	platform_device_unregister(test0);
192	platform_device_unregister(test1);
193	platform_driver_unregister(&test_drv);
194	}
195
196	MODULE_AUTHOR("Alessandro Zummo <[email protected]>");
197	MODULE_DESCRIPTION("RTC test driver/device");
198	MODULE_LICENSE("GPL");
199
200	module_init(test_init);
201	module_exit(test_exit);