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70 lines
2.0 KiB
Diff
70 lines
2.0 KiB
Diff
From 0d9b608a78c6583d97a7af470d991ff3a7e5f550 Mon Sep 17 00:00:00 2001
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From: Samuel Holland <samuel@sholland.org>
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Date: Sat, 2 Jan 2021 15:52:27 -0600
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Subject: rtc: sun6i: Allow RTC wakeup after shutdown
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Only IRQs that have enable_irq_wake() called on them can wake the system
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from sleep or after it has been shut down. Currently, the RTC alarm can
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only wake the system from sleep. Run the suspend callback to arm the IRQ
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during the shutdown process, so the RTC alarm also works after shutdown.
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Signed-off-by: Samuel Holland <samuel@sholland.org>
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---
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drivers/rtc/rtc-sun6i.c | 12 +++++++++++-
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1 file changed, 11 insertions(+), 1 deletion(-)
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diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c
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index e681c1745866..3e6917c9130e 100644
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--- a/drivers/rtc/rtc-sun6i.c
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+++ b/drivers/rtc/rtc-sun6i.c
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@@ -710,6 +710,7 @@ static struct nvmem_config sun6i_rtc_nvmem_cfg = {
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};
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#ifdef CONFIG_PM_SLEEP
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+
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/* Enable IRQ wake on suspend, to wake up from RTC. */
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static int sun6i_rtc_suspend(struct device *dev)
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{
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@@ -722,7 +723,7 @@ static int sun6i_rtc_suspend(struct device *dev)
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}
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/* Disable IRQ wake on resume. */
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-static int sun6i_rtc_resume(struct device *dev)
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+static int __maybe_unused sun6i_rtc_resume(struct device *dev)
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{
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struct sun6i_rtc_dev *chip = dev_get_drvdata(dev);
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@@ -731,6 +732,7 @@ static int sun6i_rtc_resume(struct device *dev)
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return 0;
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}
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+
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#endif
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static SIMPLE_DEV_PM_OPS(sun6i_rtc_pm_ops,
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@@ -850,6 +852,13 @@ static int sun6i_rtc_probe(struct platform_device *pdev)
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return 0;
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}
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+static void sun6i_rtc_shutdown(struct platform_device *pdev)
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+{
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+#ifdef CONFIG_PM_SLEEP
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+ sun6i_rtc_suspend(&pdev->dev);
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+#endif
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+}
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+
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/*
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* As far as RTC functionality goes, all models are the same. The
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* datasheets claim that different models have different number of
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@@ -874,6 +883,7 @@ MODULE_DEVICE_TABLE(of, sun6i_rtc_dt_ids);
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static struct platform_driver sun6i_rtc_driver = {
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.probe = sun6i_rtc_probe,
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+ .shutdown = sun6i_rtc_shutdown,
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.driver = {
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.name = "sun6i-rtc",
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.of_match_table = sun6i_rtc_dt_ids,
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--
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2.35.3
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