From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Tue, 9 Apr 2019 19:59:43 +0000 (+0200)
Subject: rtc: ab3100: set range
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=386b5941a0dd18dda24b459a421ddc51d5fb0371;p=openwrt%2Fstaging%2Fblogic.git

rtc: ab3100: set range

The ab3100 has a 48bit counter running at 65536 Hz (despite one of the
comment). The max value is then (2^48 - 1)/2^16 == 2^32 - 1.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---

diff --git a/drivers/rtc/rtc-ab3100.c b/drivers/rtc/rtc-ab3100.c
index 821ff52a2222..f73a3707b897 100644
--- a/drivers/rtc/rtc-ab3100.c
+++ b/drivers/rtc/rtc-ab3100.c
@@ -228,15 +228,17 @@ static int __init ab3100_rtc_probe(struct platform_device *pdev)
 		/* Ignore any error on this write */
 	}
 
-	rtc = devm_rtc_device_register(&pdev->dev, "ab3100-rtc",
-					&ab3100_rtc_ops, THIS_MODULE);
-	if (IS_ERR(rtc)) {
-		err = PTR_ERR(rtc);
-		return err;
-	}
+	rtc = devm_rtc_allocate_device(&pdev->dev);
+	if (IS_ERR(rtc))
+		return PTR_ERR(rtc);
+
+	rtc->ops = &ab3100_rtc_ops;
+	/* 48bit counter at (AB3100_RTC_CLOCK_RATE * 2) */
+	rtc->range_max = U32_MAX;
+
 	platform_set_drvdata(pdev, rtc);
 
-	return 0;
+	return rtc_register_device(rtc);
 }
 
 static struct platform_driver ab3100_rtc_driver = {