Commit 13bfa942 authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

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: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent d71c7715

drivers/rtc/rtc-ds2404.c

+9 −5
Original line number Diff line number Diff line
@@ -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;