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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-07-20 16:44:09 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-07-20 16:44:09 +0200
commit6ed860052906146cb2d9c71e7dc092053bc7f442 (patch)
tree42c5372cf35cda305df996c1855f8791b8a9c4c4 /drivers/acpi/ec.c
parent5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff)
parent76380636280b46541a9d2fe5aac497475bfbcde8 (diff)
Merge branch 'acpi-ec' into acpi-pm
Diffstat (limited to 'drivers/acpi/ec.c')
-rw-r--r--drivers/acpi/ec.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index ddb01e9fa5b2..f97a76782493 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -151,6 +151,10 @@ static bool ec_freeze_events __read_mostly = false;
module_param(ec_freeze_events, bool, 0644);
MODULE_PARM_DESC(ec_freeze_events, "Disabling event handling during suspend/resume");
+static bool ec_no_wakeup __read_mostly;
+module_param(ec_no_wakeup, bool, 0644);
+MODULE_PARM_DESC(ec_no_wakeup, "Do not wake up from suspend-to-idle");
+
struct acpi_ec_query_handler {
struct list_head node;
acpi_ec_query_func func;
@@ -1880,6 +1884,32 @@ static int acpi_ec_suspend(struct device *dev)
return 0;
}
+static int acpi_ec_suspend_noirq(struct device *dev)
+{
+ struct acpi_ec *ec = acpi_driver_data(to_acpi_device(dev));
+
+ /*
+ * The SCI handler doesn't run at this point, so the GPE can be
+ * masked at the low level without side effects.
+ */
+ if (ec_no_wakeup && test_bit(EC_FLAGS_STARTED, &ec->flags) &&
+ ec->reference_count >= 1)
+ acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_DISABLE);
+
+ return 0;
+}
+
+static int acpi_ec_resume_noirq(struct device *dev)
+{
+ struct acpi_ec *ec = acpi_driver_data(to_acpi_device(dev));
+
+ if (ec_no_wakeup && test_bit(EC_FLAGS_STARTED, &ec->flags) &&
+ ec->reference_count >= 1)
+ acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_ENABLE);
+
+ return 0;
+}
+
static int acpi_ec_resume(struct device *dev)
{
struct acpi_ec *ec =
@@ -1891,6 +1921,7 @@ static int acpi_ec_resume(struct device *dev)
#endif
static const struct dev_pm_ops acpi_ec_pm = {
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(acpi_ec_suspend_noirq, acpi_ec_resume_noirq)
SET_SYSTEM_SLEEP_PM_OPS(acpi_ec_suspend, acpi_ec_resume)
};