add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/rtc/rtc-cpcap.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Motorola CPCAP PMIC RTC driver
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  *
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@@ -12,15 +13,6 @@
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  *  - remove custom "secure clock daemon" helpers
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  *
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  * Copyright (C) 2017 Sebastian Reichel <sre@kernel.org>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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 #include <linux/kernel.h>
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 #include <linux/module.h>
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@@ -64,14 +56,14 @@
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 	tod = (cpcap->tod1 & TOD1_MASK) | ((cpcap->tod2 & TOD2_MASK) << 8);
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 	time = tod + ((cpcap->day & DAY_MASK) * SECS_PER_DAY);
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-	rtc_time_to_tm(time, rtc);
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+	rtc_time64_to_tm(time, rtc);
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 }
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 static void rtc2cpcap_time(struct cpcap_time *cpcap, struct rtc_time *rtc)
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 {
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 	unsigned long time;
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-	rtc_tm_to_time(rtc, &time);
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+	time = rtc_tm_to_time64(rtc);
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 	cpcap->day = time / SECS_PER_DAY;
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 	time %= SECS_PER_DAY;
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@@ -264,11 +256,12 @@
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 		return -ENODEV;
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 	platform_set_drvdata(pdev, rtc);
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-	rtc->rtc_dev = devm_rtc_device_register(dev, "cpcap_rtc",
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-						&cpcap_rtc_ops, THIS_MODULE);
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-
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+	rtc->rtc_dev = devm_rtc_allocate_device(dev);
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 	if (IS_ERR(rtc->rtc_dev))
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 		return PTR_ERR(rtc->rtc_dev);
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+
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+	rtc->rtc_dev->ops = &cpcap_rtc_ops;
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+	rtc->rtc_dev->range_max = (timeu64_t) (DAY_MASK + 1) * SECS_PER_DAY - 1;
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 	err = cpcap_get_vendor(dev, rtc->regmap, &rtc->vendor);
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 	if (err)
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@@ -306,7 +299,7 @@
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 		/* ignore error and continue without wakeup support */
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 	}
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-	return 0;
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+	return rtc_register_device(rtc->rtc_dev);
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 }
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 static const struct of_device_id cpcap_rtc_of_match[] = {