Merge suspend-to-idle rework material for v5.4.

* pm-s2idle-rework: (21 commits)
  ACPI: PM: s2idle: Always set up EC GPE for system wakeup
  ACPI: PM: s2idle: Avoid rearming SCI for wakeup unnecessarily
  PM: suspend: Fix platform_suspend_prepare_noirq()
  intel-hid: Disable button array during suspend-to-idle
  intel-hid: intel-vbtn: Avoid leaking wakeup_mode set
  ACPI: PM: s2idle: Execute LPS0 _DSM functions with suspended devices
  ACPI: EC: PM: Make acpi_ec_dispatch_gpe() print debug message
  ACPI: EC: PM: Consolidate some code depending on PM_SLEEP
  ACPI: PM: s2idle: Eliminate acpi_sleep_no_ec_events()
  ACPI: PM: s2idle: Switch EC over to polling during "noirq" suspend
  ACPI: PM: s2idle: Add acpi.sleep_no_lps0 module parameter
  ACPI: PM: s2idle: Rearrange lps0_device_attach()
  ACPI: PM: Set up EC GPE for system wakeup from drivers that need it
  PM: sleep: Drop dpm_noirq_begin() and dpm_noirq_end()
  PM: sleep: Integrate suspend-to-idle with generig suspend flow
  PM: sleep: Simplify suspend-to-idle control flow
  ACPI: PM: Set s2idle_wakeup earlier and clear it later
  PM: sleep: Fix possible overflow in pm_system_cancel_wakeup()
  ACPI: EC: Return bool from acpi_ec_dispatch_gpe()
  ACPICA: Return u32 from acpi_dispatch_gpe()
  ...

drivers/acpi/acpica/evxfgpe.c

@@ -644,17 +644,17 @@ ACPI_EXPORT_SYMBOL(acpi_get_gpe_status)
  * PARAMETERS:  gpe_device          - Parent GPE Device. NULL for GPE0/GPE1
  *              gpe_number          - GPE level within the GPE block
  *
- * RETURN:      None
+ * RETURN:      INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
  *
  * DESCRIPTION: Detect and dispatch a General Purpose Event to either a function
  *              (e.g. EC) or method (e.g. _Lxx/_Exx) handler.
  *
  ******************************************************************************/
-void acpi_dispatch_gpe(acpi_handle gpe_device, u32 gpe_number)
+u32 acpi_dispatch_gpe(acpi_handle gpe_device, u32 gpe_number)
 {
 	ACPI_FUNCTION_TRACE(acpi_dispatch_gpe);
 
-	acpi_ev_detect_gpe(gpe_device, NULL, gpe_number);
+	return acpi_ev_detect_gpe(gpe_device, NULL, gpe_number);
 }
 
 ACPI_EXPORT_SYMBOL(acpi_dispatch_gpe)

drivers/acpi/ec.c

@@ -25,6 +25,7 @@
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
+#include <linux/suspend.h>
 #include <linux/acpi.h>
 #include <linux/dmi.h>
 #include <asm/io.h>
@@ -1048,24 +1049,6 @@ void acpi_ec_unblock_transactions(void)
 		acpi_ec_start(first_ec, true);
 }
 
-void acpi_ec_mark_gpe_for_wake(void)
-{
-	if (first_ec && !ec_no_wakeup)
-		acpi_mark_gpe_for_wake(NULL, first_ec->gpe);
-}
-
-void acpi_ec_set_gpe_wake_mask(u8 action)
-{
-	if (first_ec && !ec_no_wakeup)
-		acpi_set_gpe_wake_mask(NULL, first_ec->gpe, action);
-}
-
-void acpi_ec_dispatch_gpe(void)
-{
-	if (first_ec)
-		acpi_dispatch_gpe(NULL, first_ec->gpe);
-}
-
 /* --------------------------------------------------------------------------
                                 Event Management
    -------------------------------------------------------------------------- */
@@ -1931,7 +1914,7 @@ static int acpi_ec_suspend(struct device *dev)
 	struct acpi_ec *ec =
 		acpi_driver_data(to_acpi_device(dev));
 
-	if (acpi_sleep_no_ec_events() && ec_freeze_events)
+	if (!pm_suspend_no_platform() && ec_freeze_events)
 		acpi_ec_disable_event(ec);
 	return 0;
 }
@@ -1948,8 +1931,7 @@ static int acpi_ec_suspend_noirq(struct device *dev)
 	    ec->reference_count >= 1)
 		acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_DISABLE);
 
-	if (acpi_sleep_no_ec_events())
-		acpi_ec_enter_noirq(ec);
+	acpi_ec_enter_noirq(ec);
 
 	return 0;
 }
@@ -1958,8 +1940,7 @@ static int acpi_ec_resume_noirq(struct device *dev)
 {
 	struct acpi_ec *ec = acpi_driver_data(to_acpi_device(dev));
 
-	if (acpi_sleep_no_ec_events())
-		acpi_ec_leave_noirq(ec);
+	acpi_ec_leave_noirq(ec);
 
 	if (ec_no_wakeup && test_bit(EC_FLAGS_STARTED, &ec->flags) &&
 	    ec->reference_count >= 1)
@@ -1976,7 +1957,35 @@ static int acpi_ec_resume(struct device *dev)
 	acpi_ec_enable_event(ec);
 	return 0;
 }
-#endif
+
+void acpi_ec_mark_gpe_for_wake(void)
+{
+	if (first_ec && !ec_no_wakeup)
+		acpi_mark_gpe_for_wake(NULL, first_ec->gpe);
+}
+EXPORT_SYMBOL_GPL(acpi_ec_mark_gpe_for_wake);
+
+void acpi_ec_set_gpe_wake_mask(u8 action)
+{
+	if (pm_suspend_no_platform() && first_ec && !ec_no_wakeup)
+		acpi_set_gpe_wake_mask(NULL, first_ec->gpe, action);
+}
+
+bool acpi_ec_dispatch_gpe(void)
+{
+	u32 ret;
+
+	if (!first_ec)
+		return false;
+
+	ret = acpi_dispatch_gpe(NULL, first_ec->gpe);
+	if (ret == ACPI_INTERRUPT_HANDLED) {
+		pm_pr_dbg("EC GPE dispatched\n");
+		return true;
+	}
+	return false;
+}
+#endif /* CONFIG_PM_SLEEP */
 
 static const struct dev_pm_ops acpi_ec_pm = {
 	SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(acpi_ec_suspend_noirq, acpi_ec_resume_noirq)

drivers/acpi/internal.h

@@ -194,16 +194,14 @@ void acpi_ec_ecdt_probe(void);
 void acpi_ec_dsdt_probe(void);
 void acpi_ec_block_transactions(void);
 void acpi_ec_unblock_transactions(void);
-void acpi_ec_mark_gpe_for_wake(void);
-void acpi_ec_set_gpe_wake_mask(u8 action);
-void acpi_ec_dispatch_gpe(void);
 int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
 			      acpi_handle handle, acpi_ec_query_func func,
 			      void *data);
 void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit);
 
 #ifdef CONFIG_PM_SLEEP
 void acpi_ec_flush_work(void);
+bool acpi_ec_dispatch_gpe(void);
 #endif
 
 
@@ -212,11 +210,9 @@ void acpi_ec_flush_work(void);
   -------------------------------------------------------------------------- */
 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
 extern bool acpi_s2idle_wakeup(void);
-extern bool acpi_sleep_no_ec_events(void);
 extern int acpi_sleep_init(void);
 #else
 static inline bool acpi_s2idle_wakeup(void) { return false; }
-static inline bool acpi_sleep_no_ec_events(void) { return true; }
 static inline int acpi_sleep_init(void) { return -ENXIO; }
 #endif