add new system file

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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/rtc/rtc-tps65910.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * rtc-tps65910.c -- TPS65910 Real Time Clock interface
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  *
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@@ -7,11 +8,6 @@
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  * Based on original TI driver rtc-twl.c
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  *   Copyright (C) 2007 MontaVista Software, Inc
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  *   Author: Alexandre Rusev <source@mvista.com>
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version
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- * 2 of the License, or (at your option) any later version.
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  */
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 #include <linux/kernel.h>
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@@ -147,7 +143,7 @@
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 	struct tps65910 *tps = dev_get_drvdata(dev->parent);
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 	int ret;
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-	ret = regmap_bulk_read(tps->regmap, TPS65910_SECONDS, alarm_data,
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+	ret = regmap_bulk_read(tps->regmap, TPS65910_ALARM_SECONDS, alarm_data,
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 		NUM_TIME_REGS);
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 	if (ret < 0) {
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 		dev_err(dev, "rtc_read_alarm error %d\n", ret);
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@@ -365,6 +361,13 @@
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 	.set_offset	= tps65910_set_offset,
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 };
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+static const struct rtc_class_ops tps65910_rtc_ops_noirq = {
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+	.read_time	= tps65910_rtc_read_time,
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+	.set_time	= tps65910_rtc_set_time,
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+	.read_offset	= tps65910_read_offset,
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+	.set_offset	= tps65910_set_offset,
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+};
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+
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 static int tps65910_rtc_probe(struct platform_device *pdev)
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 {
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 	struct tps65910 *tps65910 = NULL;
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@@ -418,24 +421,20 @@
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 	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
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 		tps65910_rtc_interrupt, IRQF_TRIGGER_LOW,
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 		dev_name(&pdev->dev), &pdev->dev);
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-	if (ret < 0) {
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-		dev_err(&pdev->dev, "IRQ is not free.\n");
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-		return ret;
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-	}
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-	tps_rtc->irq = irq;
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-	device_set_wakeup_capable(&pdev->dev, 1);
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+	if (ret < 0)
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+		irq = -1;
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-	tps_rtc->rtc->ops = &tps65910_rtc_ops;
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+	tps_rtc->irq = irq;
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+	if (irq != -1) {
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+		device_set_wakeup_capable(&pdev->dev, 1);
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+		tps_rtc->rtc->ops = &tps65910_rtc_ops;
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+	} else
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+		tps_rtc->rtc->ops = &tps65910_rtc_ops_noirq;
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+
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 	tps_rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
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 	tps_rtc->rtc->range_max = RTC_TIMESTAMP_END_2099;
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-	ret = rtc_register_device(tps_rtc->rtc);
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-	if (ret) {
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-		dev_err(&pdev->dev, "RTC device register: err %d\n", ret);
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-		return ret;
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-	}
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-
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-	return 0;
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+	return rtc_register_device(tps_rtc->rtc);
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 }
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 #ifdef CONFIG_PM_SLEEP