add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/rtc/rtc-mxc_v2.c
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@@ -10,6 +10,7 @@
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 #include <linux/module.h>
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 #include <linux/mod_devicetable.h>
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 #include <linux/platform_device.h>
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+#include <linux/pm_wakeirq.h>
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 #include <linux/rtc.h>
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 #define SRTC_LPPDR_INIT       0x41736166	/* init for glitch detect */
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@@ -278,7 +279,6 @@
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 static int mxc_rtc_probe(struct platform_device *pdev)
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 {
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 	struct mxc_rtc_data *pdata;
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-	struct resource *res;
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 	void __iomem *ioaddr;
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 	int ret = 0;
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@@ -286,8 +286,7 @@
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 	if (!pdata)
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 		return -ENOMEM;
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	pdata->ioaddr = devm_ioremap_resource(&pdev->dev, res);
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+	pdata->ioaddr = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(pdata->ioaddr))
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 		return PTR_ERR(pdata->ioaddr);
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@@ -305,6 +304,9 @@
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 		return pdata->irq;
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 	device_init_wakeup(&pdev->dev, 1);
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+	ret = dev_pm_set_wake_irq(&pdev->dev, pdata->irq);
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+	if (ret)
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+		dev_err(&pdev->dev, "failed to enable irq wake\n");
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 	ret = clk_prepare_enable(pdata->clk);
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 	if (ret)
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@@ -335,8 +337,10 @@
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 	}
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 	pdata->rtc = devm_rtc_allocate_device(&pdev->dev);
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-	if (IS_ERR(pdata->rtc))
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+	if (IS_ERR(pdata->rtc)) {
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+		clk_disable_unprepare(pdata->clk);
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 		return PTR_ERR(pdata->rtc);
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+	}
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 	pdata->rtc->ops = &mxc_rtc_ops;
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 	pdata->rtc->range_max = U32_MAX;
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@@ -367,30 +371,6 @@
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 	return 0;
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 }
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-#ifdef CONFIG_PM_SLEEP
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-static int mxc_rtc_suspend(struct device *dev)
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-{
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-	struct mxc_rtc_data *pdata = dev_get_drvdata(dev);
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-
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-	if (device_may_wakeup(dev))
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-		enable_irq_wake(pdata->irq);
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-
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-	return 0;
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-}
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-
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-static int mxc_rtc_resume(struct device *dev)
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-{
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-	struct mxc_rtc_data *pdata = dev_get_drvdata(dev);
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-
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-	if (device_may_wakeup(dev))
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-		disable_irq_wake(pdata->irq);
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-
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-	return 0;
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-}
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-#endif
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-
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-static SIMPLE_DEV_PM_OPS(mxc_rtc_pm_ops, mxc_rtc_suspend, mxc_rtc_resume);
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-
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 static const struct of_device_id mxc_ids[] = {
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 	{ .compatible = "fsl,imx53-rtc", },
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 	{}
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@@ -401,7 +381,6 @@
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 	.driver = {
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 		.name = "mxc_rtc_v2",
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 		.of_match_table = mxc_ids,
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-		.pm = &mxc_rtc_pm_ops,
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 	},
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 	.probe = mxc_rtc_probe,
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 	.remove = mxc_rtc_remove,