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| /linux/drivers/rtc/ |
| H A D | rtc-opal.c | diff 0ec7769a98b00866e37740328d65cba6594d178d Wed May 31 15:09:01 CEST 2017 Vaibhav Jain <vaibhav@linux.vnet.ibm.com> rtc: opal: Implement rtc_class_ops.alarm_irq_enable callback
Provide an implementation of the callback
rtc_class_ops.alarm_irq_enable for rtc-opal driver. This callback is
called when the wake alarm is disabled via the command:
'echo 0 > /sys/class/rtc/rtc0/wakealarm'
Without this the Timed-Power-On(TPO) config remains set even when its
disabled by the above command and FSP will still force machine
boot at previously configured alarm time.
The callback is implemented as function opal_tpo_alarm_irq_enable()
which calls opal_set_tpo_time() with alarm.enabled == 0. A branch is
added to opal_set_tpo_time() to handle this case by passing y_m_d ==
h_m_s_ms == 0 to opal as arguments for opal_tpo_write() call.
Signed-off-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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