From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Thu, 20 Jul 2017 14:44:09 +0000 (+0200)
Subject: Merge branch 'acpi-ec' into acpi-pm
X-Git-Tag: v4.13-rc3~19^2~2
X-Git-Url: https://git.kernelconcepts.de/?a=commitdiff_plain;h=6ed860052906146cb2d9c71e7dc092053bc7f442;hp=-c;p=karo-tx-linux.git

Merge branch 'acpi-ec' into acpi-pm
---

6ed860052906146cb2d9c71e7dc092053bc7f442
diff --combined drivers/acpi/ec.c
index ddb01e9fa5b2,8ab4df64b8be..f97a76782493
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@@ -27,7 -27,7 +27,7 @@@
  
  /* Uncomment next line to get verbose printout */
  /* #define DEBUG */
 -#define pr_fmt(fmt) "ACPI : EC: " fmt
 +#define pr_fmt(fmt) "ACPI: EC: " fmt
  
  #include <linux/kernel.h>
  #include <linux/module.h>
@@@ -151,6 -151,10 +151,10 @@@ static bool ec_freeze_events __read_mos
  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;
@@@ -1875,11 -1879,37 +1879,37 @@@ static int acpi_ec_suspend(struct devic
  	struct acpi_ec *ec =
  		acpi_driver_data(to_acpi_device(dev));
  
 -	if (ec_freeze_events)
 +	if (acpi_sleep_no_ec_events() && ec_freeze_events)
  		acpi_ec_disable_event(ec);
  	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 +1921,7 @@@
  #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)
  };