Lines Matching +full:suspend +full:- +full:to +full:- +full:ram

1 // SPDX-License-Identifier: GPL-2.0-only
3  * kernel/power/suspend_test.c - Suspend to RAM and standby test facility.
14  * We test the system suspend code by setting an RTC wakealarm a short
18  * The time it takes is system-specific though, so when we test this
31 	 * during the irqs-are-off stages of the suspend/resume cycle...  in suspend_test_start()
38 	long nj = jiffies - suspend_test_start_time;  in suspend_test_finish()
45 	/* Warning on suspend means the RTC alarm period needs to be  in suspend_test_finish()
46 	 * larger -- the system was sooo slooowwww to suspend that the  in suspend_test_finish()
47 	 * alarm (should have) fired before the system went to sleep!  in suspend_test_finish()
49 	 * Warning on either suspend or resume also means the system  in suspend_test_finish()
51 	 * is more likely to get the right attention than a printk...  in suspend_test_finish()
58  * To test system suspend, we need a hands-off mechanism to resume the
59  * system.  RTCs wake alarms are a common self-contained mechanism.
69 		KERN_ERR "PM: suspend test failed, error %d\n";  in test_wakealarm()
71 		KERN_INFO "PM: test RTC wakeup from '%s' suspend\n";  in test_wakealarm()
81 		printk(err_readtime, dev_name(&rtc->dev), status);  in test_wakealarm()
92 		printk(err_wakealarm, dev_name(&rtc->dev), status);  in test_wakealarm()
99 		if (status == -ENODEV)  in test_wakealarm()
122 	 * It's supposed to give oneshot behavior; cope.  in test_wakealarm()
132 	if (!test_bit(RTC_FEATURE_ALARM, candidate->features))  in has_wakealarm()
134 	if (!device_may_wakeup(candidate->dev.parent))  in has_wakealarm()
141  * Kernel options like "test_suspend=mem" force suspend/resume sanity tests
148 	KERN_WARNING "PM: can't test '%s' suspend state\n";
182 		KERN_WARNING "PM: no wakealarm-capable RTC driver is ready\n";  in test_suspend()