148 lines
3.1 KiB
C
148 lines
3.1 KiB
C
/*
|
|
* \brief Genode RTC driver
|
|
* \author Stefan Kalkowski <kalkowski@genode-labs.com>
|
|
* \date 2011-10-25
|
|
*
|
|
* Dummy driver taken from drivers/rtc/rtc-test.c.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2011-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
/* Linux includes */
|
|
#include <linux/platform_device.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/rtc.h>
|
|
|
|
#include <l4/sys/kdebug.h>
|
|
|
|
struct genode_rtc {
|
|
struct rtc_device *rtc;
|
|
};
|
|
|
|
|
|
static int genode_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int genode_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int genode_rtc_read_time(struct device *dev, struct rtc_time *tm)
|
|
{
|
|
rtc_time_to_tm(get_seconds(), tm);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int genode_rtc_set_mmss(struct device *dev, unsigned long secs)
|
|
{
|
|
dev_info(dev, "%s, secs = %lu\n", __func__, secs);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int genode_rtc_proc(struct device *dev, struct seq_file *seq)
|
|
{
|
|
struct platform_device *plat_dev = to_platform_device(dev);
|
|
|
|
seq_printf(seq, "genode_rtc\t\t: yes\n");
|
|
seq_printf(seq, "id\t\t: %d\n", plat_dev->id);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int genode_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
static const struct rtc_class_ops genode_rtc_ops = {
|
|
.proc = genode_rtc_proc,
|
|
.read_time = genode_rtc_read_time,
|
|
.read_alarm = genode_rtc_read_alarm,
|
|
.set_alarm = genode_rtc_set_alarm,
|
|
.set_mmss = genode_rtc_set_mmss,
|
|
.alarm_irq_enable = genode_rtc_alarm_irq_enable,
|
|
};
|
|
|
|
|
|
static int genode_rtc_remove(struct platform_device *pdev)
|
|
{
|
|
struct genode_rtc *priv = platform_get_drvdata(pdev);
|
|
rtc_device_unregister(priv->rtc);
|
|
platform_set_drvdata(pdev, NULL);
|
|
kfree(priv);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int genode_rtc_probe(struct platform_device *pdev)
|
|
{
|
|
int err;
|
|
struct genode_rtc *priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
platform_set_drvdata(pdev, priv);
|
|
|
|
priv->rtc = rtc_device_register(pdev->name,
|
|
&pdev->dev, &genode_rtc_ops, THIS_MODULE);
|
|
if (IS_ERR(priv->rtc)) {
|
|
err = PTR_ERR(priv->rtc);
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct platform_driver __refdata genode_rtc_driver = {
|
|
.remove = genode_rtc_remove,
|
|
.probe = genode_rtc_probe,
|
|
.driver = {
|
|
.name = "rtc-genode",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static struct platform_device genode_rtc_device = {
|
|
.name = "rtc-genode",
|
|
};
|
|
|
|
|
|
static int __init genode_rtc_init(void)
|
|
{
|
|
int ret = platform_driver_register(&genode_rtc_driver);
|
|
if (!ret) {
|
|
ret = platform_device_register(&genode_rtc_device);
|
|
if (ret)
|
|
platform_driver_unregister(&genode_rtc_driver);
|
|
}
|
|
return ret;
|
|
}
|
|
module_init(genode_rtc_init);
|
|
|
|
|
|
static void __exit genode_rtc_exit(void)
|
|
{
|
|
platform_device_register(&genode_rtc_device);
|
|
platform_driver_unregister(&genode_rtc_driver);
|
|
}
|
|
module_exit(genode_rtc_exit);
|
|
|
|
|
|
MODULE_AUTHOR("Stefan Kalkowski <stefan.kalkowski@genode-labs.com>");
|
|
MODULE_DESCRIPTION("RTC driver for Genode");
|
|
MODULE_LICENSE("GPL");
|