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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: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2018-05-31 23:09:57 +02:00
parent 5b257571cd
commit 4dc2403bed
1 changed files with 23 additions and 16 deletions
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41
drivers/rtc/rtc-test.c
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@ -15,6 +15,11 @@
#define MAX_RTC_TEST 3 #define MAX_RTC_TEST 3
struct rtc_test_data {
struct rtc_device *rtc;
time64_t offset;
};
struct platform_device *pdev[MAX_RTC_TEST]; struct platform_device *pdev[MAX_RTC_TEST];
static int test_rtc_read_alarm(struct device *dev, static int test_rtc_read_alarm(struct device *dev,
@ -29,16 +34,21 @@ static int test_rtc_set_alarm(struct device *dev,
return 0; return 0;
} }
static int test_rtc_read_time(struct device *dev, static int test_rtc_read_time(struct device *dev, struct rtc_time *tm)
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; return 0;
} }
static int test_rtc_set_mmss64(struct device *dev, time64_t secs) 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; 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) static int test_probe(struct platform_device *plat_dev)
{ {
int err; struct rtc_test_data *rtd;
struct rtc_device *rtc;
rtc = devm_rtc_device_register(&plat_dev->dev, "test", rtd = devm_kzalloc(&plat_dev->dev, sizeof(*rtd), GFP_KERNEL);
if (!rtd)
return -ENOMEM;
platform_set_drvdata(plat_dev, rtd);
rtd->rtc = devm_rtc_device_register(&plat_dev->dev, "test",
&test_rtc_ops, THIS_MODULE); &test_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) { if (IS_ERR(rtd->rtc))
return PTR_ERR(rtc); return PTR_ERR(rtd->rtc);
}
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, rtc);
return 0; return 0;
} }