From e3eaef8ae55b4c8a4aa851669d077e4955d5ed1c Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Sat, 2 Jan 2021 15:52:27 -0600 Subject: [PATCH] rtc: sun6i: Allow RTC wakeup after shutdown Only IRQs that have enable_irq_wake() called on them can wake the system from sleep or after it has been shut down. Currently, the RTC alarm can only wake the system from sleep. Run the suspend callback to arm the IRQ during the shutdown process, so the RTC alarm also works after shutdown. Signed-off-by: Samuel Holland --- drivers/rtc/rtc-sun6i.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c index 7038f47d7..e4db445b7 100644 --- a/drivers/rtc/rtc-sun6i.c +++ b/drivers/rtc/rtc-sun6i.c @@ -709,6 +709,7 @@ static struct nvmem_config sun6i_rtc_nvmem_cfg = { }; #ifdef CONFIG_PM_SLEEP + /* Enable IRQ wake on suspend, to wake up from RTC. */ static int sun6i_rtc_suspend(struct device *dev) { @@ -721,7 +722,7 @@ static int sun6i_rtc_suspend(struct device *dev) } /* Disable IRQ wake on resume. */ -static int sun6i_rtc_resume(struct device *dev) +static int __maybe_unused sun6i_rtc_resume(struct device *dev) { struct sun6i_rtc_dev *chip = dev_get_drvdata(dev); @@ -730,6 +731,7 @@ static int sun6i_rtc_resume(struct device *dev) return 0; } + #endif static SIMPLE_DEV_PM_OPS(sun6i_rtc_pm_ops, @@ -851,6 +853,13 @@ static int sun6i_rtc_probe(struct platform_device *pdev) return 0; } +static void sun6i_rtc_shutdown(struct platform_device *pdev) +{ +#ifdef CONFIG_PM_SLEEP + sun6i_rtc_suspend(&pdev->dev); +#endif +} + /* * As far as RTC functionality goes, all models are the same. The * datasheets claim that different models have different number of @@ -875,6 +884,7 @@ MODULE_DEVICE_TABLE(of, sun6i_rtc_dt_ids); static struct platform_driver sun6i_rtc_driver = { .probe = sun6i_rtc_probe, + .shutdown = sun6i_rtc_shutdown, .driver = { .name = "sun6i-rtc", .of_match_table = sun6i_rtc_dt_ids,