Commit 4dc2403b authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

rtc: test: store time as an offset to system time 



Store the time as an offset to system time. As the offset is in second, it
is currently always synced with system time.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent 5b257571

drivers/rtc/rtc-test.c

+23 −16
Original line number Diff line number Diff line
@@ -15,6 +15,11 @@ 


#define MAX_RTC_TEST 3



struct rtc_test_data {

	struct rtc_device *rtc;

	time64_t offset;

};



struct platform_device *pdev[MAX_RTC_TEST];



static int test_rtc_read_alarm(struct device *dev,
@@ -29,16 +34,21 @@ static int test_rtc_set_alarm(struct device *dev, 
	return 0;

}



static int test_rtc_read_time(struct device *dev,

	struct rtc_time *tm)

static int test_rtc_read_time(struct device *dev, struct rtc_time *tm)

{

	rtc_time64_to_tm(ktime_get_real_seconds(), tm);

	struct rtc_test_data *rtd = dev_get_drvdata(dev);



	rtc_time64_to_tm(ktime_get_real_seconds() + rtd->offset, tm);



	return 0;

}



static int test_rtc_set_mmss64(struct device *dev, time64_t secs)

{

	dev_info(dev, "%s, secs = %lld\n", __func__, (long long)secs);

	struct rtc_test_data *rtd = dev_get_drvdata(dev);



	rtd->offset = secs - ktime_get_real_seconds();



	return 0;

}
@@ -88,21 +98,18 @@ 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;

	struct rtc_test_data *rtd;



	rtc = devm_rtc_device_register(&plat_dev->dev, "test",

				&test_rtc_ops, THIS_MODULE);

	if (IS_ERR(rtc)) {

		return PTR_ERR(rtc);

	}

	rtd = devm_kzalloc(&plat_dev->dev, sizeof(*rtd), GFP_KERNEL);

	if (!rtd)

		return -ENOMEM;



	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, rtd);



	platform_set_drvdata(plat_dev, rtc);

	rtd->rtc = devm_rtc_device_register(&plat_dev->dev, "test",

					    &test_rtc_ops, THIS_MODULE);

	if (IS_ERR(rtd->rtc))

		return PTR_ERR(rtd->rtc);



	return 0;

}