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