• Vaibhav Jain's avatar
    rtc: opal: Implement rtc_class_ops.alarm_irq_enable callback · 0ec7769a
    Vaibhav Jain authored
    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: default avatarVaibhav Jain <vaibhav@linux.vnet.ibm.com>
    Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
rtc-opal.c 6.74 KB