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| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-04-19 10:24:56 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-04-19 22:37:16 +0200 |
| commit | 13bfa942254f0894f22bcbfccee3480df1bfd89d (patch) | |
| tree | 5169c4af60557f5242e709445183bcff209fce70 /drivers/rtc/rtc-ds2404.c | |
| parent | rtc: ep93xx: fix checkpatch issues (diff) | |
| download | linux-13bfa942254f0894f22bcbfccee3480df1bfd89d.tar.xz linux-13bfa942254f0894f22bcbfccee3480df1bfd89d.zip | |
rtc: ds2404: set range
The real-time clock is a 5-byte binary counter. It is incremented 256 times
per second. The least significant byte is a count of fractional seconds.
The upper four bytes are a count of seconds. The realtime clock can
accumulate 136 years of seconds before rolling over.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/rtc/rtc-ds2404.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c index b886b6a5c178..7b36c09bed10 100644 --- a/drivers/rtc/rtc-ds2404.c +++ b/drivers/rtc/rtc-ds2404.c @@ -234,6 +234,10 @@ static int rtc_probe(struct platform_device *pdev) chip->ops = &ds2404_gpio_ops; + chip->rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(chip->rtc)) + return PTR_ERR(chip->rtc); + retval = chip->ops->map_io(chip, pdev, pdata); if (retval) goto err_chip; @@ -244,12 +248,12 @@ static int rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, chip); - chip->rtc = devm_rtc_device_register(&pdev->dev, "ds2404", - &ds2404_rtc_ops, THIS_MODULE); - if (IS_ERR(chip->rtc)) { - retval = PTR_ERR(chip->rtc); + chip->rtc->ops = &ds2404_rtc_ops; + chip->rtc->range_max = U32_MAX; + + retval = rtc_register_device(chip->rtc); + if (retval) goto err_io; - } ds2404_enable_osc(&pdev->dev); return 0; |