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-rw-r--r--drivers/acpi/acpica/evxfgpe.c6
-rw-r--r--drivers/acpi/ec.c57
-rw-r--r--drivers/acpi/internal.h6
-rw-r--r--drivers/acpi/sleep.c165
-rw-r--r--drivers/base/power/main.c35
-rw-r--r--drivers/base/power/wakeup.c2
-rw-r--r--drivers/platform/x86/intel-hid.c36
-rw-r--r--drivers/platform/x86/intel-vbtn.c20
-rw-r--r--include/acpi/acpixf.h8
-rw-r--r--include/linux/acpi.h4
-rw-r--r--include/linux/interrupt.h1
-rw-r--r--include/linux/pm.h4
-rw-r--r--include/linux/suspend.h4
-rw-r--r--kernel/irq/pm.c20
-rw-r--r--kernel/power/suspend.c65
15 files changed, 243 insertions, 190 deletions
diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c
index 710488ec59e9..04a40d563dd6 100644
--- a/drivers/acpi/acpica/evxfgpe.c
+++ b/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)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index c33756ed3304..da1e5c5ce150 100644
--- a/drivers/acpi/ec.c
+++ b/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)
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index f4c2fe6be4f2..afe6636f9ad3 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -194,9 +194,6 @@ 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);
@@ -204,6 +201,7 @@ 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
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index f0fe7c15d657..9fa77d72ef27 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -89,6 +89,10 @@ bool acpi_sleep_state_supported(u8 sleep_state)
}
#ifdef CONFIG_ACPI_SLEEP
+static bool sleep_no_lps0 __read_mostly;
+module_param(sleep_no_lps0, bool, 0644);
+MODULE_PARM_DESC(sleep_no_lps0, "Do not use the special LPS0 device interface");
+
static u32 acpi_target_sleep_state = ACPI_STATE_S0;
u32 acpi_target_system_state(void)
@@ -158,11 +162,11 @@ static int __init init_nvs_nosave(const struct dmi_system_id *d)
return 0;
}
-static bool acpi_sleep_no_lps0;
+static bool acpi_sleep_default_s3;
-static int __init init_no_lps0(const struct dmi_system_id *d)
+static int __init init_default_s3(const struct dmi_system_id *d)
{
- acpi_sleep_no_lps0 = true;
+ acpi_sleep_default_s3 = true;
return 0;
}
@@ -363,7 +367,7 @@ static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
* S0 Idle firmware interface.
*/
{
- .callback = init_no_lps0,
+ .callback = init_default_s3,
.ident = "Dell XPS13 9360",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
@@ -376,7 +380,7 @@ static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
* https://bugzilla.kernel.org/show_bug.cgi?id=199057).
*/
{
- .callback = init_no_lps0,
+ .callback = init_default_s3,
.ident = "ThinkPad X1 Tablet(2016)",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
@@ -524,8 +528,9 @@ static void acpi_pm_end(void)
acpi_sleep_tts_switch(acpi_target_sleep_state);
}
#else /* !CONFIG_ACPI_SLEEP */
+#define sleep_no_lps0 (1)
#define acpi_target_sleep_state ACPI_STATE_S0
-#define acpi_sleep_no_lps0 (false)
+#define acpi_sleep_default_s3 (1)
static inline void acpi_sleep_dmi_check(void) {}
#endif /* CONFIG_ACPI_SLEEP */
@@ -691,7 +696,6 @@ static const struct platform_suspend_ops acpi_suspend_ops_old = {
.recover = acpi_pm_finish,
};
-static bool s2idle_in_progress;
static bool s2idle_wakeup;
/*
@@ -904,42 +908,43 @@ static int lps0_device_attach(struct acpi_device *adev,
if (lps0_device_handle)
return 0;
- if (acpi_sleep_no_lps0) {
- acpi_handle_info(adev->handle,
- "Low Power S0 Idle interface disabled\n");
- return 0;
- }
-
if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0))
return 0;
guid_parse(ACPI_LPS0_DSM_UUID, &lps0_dsm_guid);
/* Check if the _DSM is present and as expected. */
out_obj = acpi_evaluate_dsm(adev->handle, &lps0_dsm_guid, 1, 0, NULL);
- if (out_obj && out_obj->type == ACPI_TYPE_BUFFER) {
- char bitmask = *(char *)out_obj->buffer.pointer;
-
- lps0_dsm_func_mask = bitmask;
- lps0_device_handle = adev->handle;
- /*
- * Use suspend-to-idle by default if the default
- * suspend mode was not set from the command line.
- */
- if (mem_sleep_default > PM_SUSPEND_MEM)
- mem_sleep_current = PM_SUSPEND_TO_IDLE;
-
- acpi_handle_debug(adev->handle, "_DSM function mask: 0x%x\n",
- bitmask);
-
- acpi_ec_mark_gpe_for_wake();
- } else {
+ if (!out_obj || out_obj->type != ACPI_TYPE_BUFFER) {
acpi_handle_debug(adev->handle,
"_DSM function 0 evaluation failed\n");
+ return 0;
}
+
+ lps0_dsm_func_mask = *(char *)out_obj->buffer.pointer;
+
ACPI_FREE(out_obj);
+ acpi_handle_debug(adev->handle, "_DSM function mask: 0x%x\n",
+ lps0_dsm_func_mask);
+
+ lps0_device_handle = adev->handle;
+
lpi_device_get_constraints();
+ /*
+ * Use suspend-to-idle by default if the default suspend mode was not
+ * set from the command line.
+ */
+ if (mem_sleep_default > PM_SUSPEND_MEM && !acpi_sleep_default_s3)
+ mem_sleep_current = PM_SUSPEND_TO_IDLE;
+
+ /*
+ * Some LPS0 systems, like ASUS Zenbook UX430UNR/i7-8550U, require the
+ * EC GPE to be enabled while suspended for certain wakeup devices to
+ * work, so mark it as wakeup-capable.
+ */
+ acpi_ec_mark_gpe_for_wake();
+
return 0;
}
@@ -951,98 +956,110 @@ static struct acpi_scan_handler lps0_handler = {
static int acpi_s2idle_begin(void)
{
acpi_scan_lock_acquire();
- s2idle_in_progress = true;
return 0;
}
static int acpi_s2idle_prepare(void)
{
- if (lps0_device_handle) {
- acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF);
- acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY);
-
+ if (acpi_sci_irq_valid()) {
+ enable_irq_wake(acpi_sci_irq);
acpi_ec_set_gpe_wake_mask(ACPI_GPE_ENABLE);
}
- if (acpi_sci_irq_valid())
- enable_irq_wake(acpi_sci_irq);
-
acpi_enable_wakeup_devices(ACPI_STATE_S0);
/* Change the configuration of GPEs to avoid spurious wakeup. */
acpi_enable_all_wakeup_gpes();
acpi_os_wait_events_complete();
+
+ s2idle_wakeup = true;
return 0;
}
-static void acpi_s2idle_wake(void)
+static int acpi_s2idle_prepare_late(void)
{
- if (!lps0_device_handle)
- return;
+ if (!lps0_device_handle || sleep_no_lps0)
+ return 0;
if (pm_debug_messages_on)
lpi_check_constraints();
+ acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF);
+ acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY);
+
+ return 0;
+}
+
+static void acpi_s2idle_wake(void)
+{
+ /*
+ * If IRQD_WAKEUP_ARMED is set for the SCI at this point, the SCI has
+ * not triggered while suspended, so bail out.
+ */
+ if (!acpi_sci_irq_valid() ||
+ irqd_is_wakeup_armed(irq_get_irq_data(acpi_sci_irq)))
+ return;
+
/*
- * If IRQD_WAKEUP_ARMED is not set for the SCI at this point, it means
- * that the SCI has triggered while suspended, so cancel the wakeup in
- * case it has not been a wakeup event (the GPEs will be checked later).
+ * If there are EC events to process, the wakeup may be a spurious one
+ * coming from the EC.
*/
- if (acpi_sci_irq_valid() &&
- !irqd_is_wakeup_armed(irq_get_irq_data(acpi_sci_irq))) {
+ if (acpi_ec_dispatch_gpe()) {
+ /*
+ * Cancel the wakeup and process all pending events in case
+ * there are any wakeup ones in there.
+ *
+ * Note that if any non-EC GPEs are active at this point, the
+ * SCI will retrigger after the rearming below, so no events
+ * should be missed by canceling the wakeup here.
+ */
pm_system_cancel_wakeup();
- s2idle_wakeup = true;
/*
- * On some platforms with the LPS0 _DSM device noirq resume
- * takes too much time for EC wakeup events to survive, so look
- * for them now.
+ * The EC driver uses the system workqueue and an additional
+ * special one, so those need to be flushed too.
*/
- acpi_ec_dispatch_gpe();
+ acpi_os_wait_events_complete(); /* synchronize EC GPE processing */
+ acpi_ec_flush_work();
+ acpi_os_wait_events_complete(); /* synchronize Notify handling */
+
+ rearm_wake_irq(acpi_sci_irq);
}
}
-static void acpi_s2idle_sync(void)
+static void acpi_s2idle_restore_early(void)
{
- /*
- * Process all pending events in case there are any wakeup ones.
- *
- * The EC driver uses the system workqueue and an additional special
- * one, so those need to be flushed too.
- */
- acpi_os_wait_events_complete(); /* synchronize SCI IRQ handling */
- acpi_ec_flush_work();
- acpi_os_wait_events_complete(); /* synchronize Notify handling */
- s2idle_wakeup = false;
+ if (!lps0_device_handle || sleep_no_lps0)
+ return;
+
+ acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT);
+ acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON);
}
static void acpi_s2idle_restore(void)
{
+ s2idle_wakeup = false;
+
acpi_enable_all_runtime_gpes();
acpi_disable_wakeup_devices(ACPI_STATE_S0);
- if (acpi_sci_irq_valid())
- disable_irq_wake(acpi_sci_irq);
-
- if (lps0_device_handle) {
+ if (acpi_sci_irq_valid()) {
acpi_ec_set_gpe_wake_mask(ACPI_GPE_DISABLE);
-
- acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT);
- acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON);
+ disable_irq_wake(acpi_sci_irq);
}
}
static void acpi_s2idle_end(void)
{
- s2idle_in_progress = false;
acpi_scan_lock_release();
}
static const struct platform_s2idle_ops acpi_s2idle_ops = {
.begin = acpi_s2idle_begin,
.prepare = acpi_s2idle_prepare,
+ .prepare_late = acpi_s2idle_prepare_late,
.wake = acpi_s2idle_wake,
- .sync = acpi_s2idle_sync,
+ .restore_early = acpi_s2idle_restore_early,
.restore = acpi_s2idle_restore,
.end = acpi_s2idle_end,
};
@@ -1063,7 +1080,6 @@ static void acpi_sleep_suspend_setup(void)
}
#else /* !CONFIG_SUSPEND */
-#define s2idle_in_progress (false)
#define s2idle_wakeup (false)
#define lps0_device_handle (NULL)
static inline void acpi_sleep_suspend_setup(void) {}
@@ -1074,11 +1090,6 @@ bool acpi_s2idle_wakeup(void)
return s2idle_wakeup;
}
-bool acpi_sleep_no_ec_events(void)
-{
- return !s2idle_in_progress || !lps0_device_handle;
-}
-
#ifdef CONFIG_PM_SLEEP
static u32 saved_bm_rld;
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 7fb2c39bc725..134a8af51511 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -716,7 +716,7 @@ static void async_resume_noirq(void *data, async_cookie_t cookie)
put_device(dev);
}
-void dpm_noirq_resume_devices(pm_message_t state)
+static void dpm_noirq_resume_devices(pm_message_t state)
{
struct device *dev;
ktime_t starttime = ktime_get();
@@ -760,13 +760,6 @@ void dpm_noirq_resume_devices(pm_message_t state)
trace_suspend_resume(TPS("dpm_resume_noirq"), state.event, false);
}
-void dpm_noirq_end(void)
-{
- resume_device_irqs();
- device_wakeup_disarm_wake_irqs();
- cpuidle_resume();
-}
-
/**
* dpm_resume_noirq - Execute "noirq resume" callbacks for all devices.
* @state: PM transition of the system being carried out.
@@ -777,7 +770,11 @@ void dpm_noirq_end(void)
void dpm_resume_noirq(pm_message_t state)
{
dpm_noirq_resume_devices(state);
- dpm_noirq_end();
+
+ resume_device_irqs();
+ device_wakeup_disarm_wake_irqs();
+
+ cpuidle_resume();
}
static pm_callback_t dpm_subsys_resume_early_cb(struct device *dev,
@@ -1291,11 +1288,6 @@ static int __device_suspend_noirq(struct device *dev, pm_message_t state, bool a
if (async_error)
goto Complete;
- if (pm_wakeup_pending()) {
- async_error = -EBUSY;
- goto Complete;
- }
-
if (dev->power.syscore || dev->power.direct_complete)
goto Complete;
@@ -1362,14 +1354,7 @@ static int device_suspend_noirq(struct device *dev)
return __device_suspend_noirq(dev, pm_transition, false);
}
-void dpm_noirq_begin(void)
-{
- cpuidle_pause();
- device_wakeup_arm_wake_irqs();
- suspend_device_irqs();
-}
-
-int dpm_noirq_suspend_devices(pm_message_t state)
+static int dpm_noirq_suspend_devices(pm_message_t state)
{
ktime_t starttime = ktime_get();
int error = 0;
@@ -1426,7 +1411,11 @@ int dpm_suspend_noirq(pm_message_t state)
{
int ret;
- dpm_noirq_begin();
+ cpuidle_pause();
+
+ device_wakeup_arm_wake_irqs();
+ suspend_device_irqs();
+
ret = dpm_noirq_suspend_devices(state);
if (ret)
dpm_resume_noirq(resume_event(state));
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index e58b070985b1..5817b51d2b15 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -879,7 +879,7 @@ EXPORT_SYMBOL_GPL(pm_system_wakeup);
void pm_system_cancel_wakeup(void)
{
- atomic_dec(&pm_abort_suspend);
+ atomic_dec_if_positive(&pm_abort_suspend);
}
void pm_wakeup_clear(bool reset)
diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c
index bc0d55a59015..ef6d4bd77b1a 100644
--- a/drivers/platform/x86/intel-hid.c
+++ b/drivers/platform/x86/intel-hid.c
@@ -253,35 +253,45 @@ static void intel_button_array_enable(struct device *device, bool enable)
static int intel_hid_pm_prepare(struct device *device)
{
- struct intel_hid_priv *priv = dev_get_drvdata(device);
+ if (device_may_wakeup(device)) {
+ struct intel_hid_priv *priv = dev_get_drvdata(device);
- priv->wakeup_mode = true;
+ priv->wakeup_mode = true;
+ }
return 0;
}
+static void intel_hid_pm_complete(struct device *device)
+{
+ struct intel_hid_priv *priv = dev_get_drvdata(device);
+
+ priv->wakeup_mode = false;
+}
+
static int intel_hid_pl_suspend_handler(struct device *device)
{
- if (pm_suspend_via_firmware()) {
+ intel_button_array_enable(device, false);
+
+ if (!pm_suspend_no_platform())
intel_hid_set_enable(device, false);
- intel_button_array_enable(device, false);
- }
+
return 0;
}
static int intel_hid_pl_resume_handler(struct device *device)
{
- struct intel_hid_priv *priv = dev_get_drvdata(device);
+ intel_hid_pm_complete(device);
- priv->wakeup_mode = false;
- if (pm_resume_via_firmware()) {
+ if (!pm_suspend_no_platform())
intel_hid_set_enable(device, true);
- intel_button_array_enable(device, true);
- }
+
+ intel_button_array_enable(device, true);
return 0;
}
static const struct dev_pm_ops intel_hid_pl_pm_ops = {
.prepare = intel_hid_pm_prepare,
+ .complete = intel_hid_pm_complete,
.freeze = intel_hid_pl_suspend_handler,
.thaw = intel_hid_pl_resume_handler,
.restore = intel_hid_pl_resume_handler,
@@ -491,6 +501,12 @@ static int intel_hid_probe(struct platform_device *device)
}
device_init_wakeup(&device->dev, true);
+ /*
+ * In order for system wakeup to work, the EC GPE has to be marked as
+ * a wakeup one, so do that here (this setting will persist, but it has
+ * no effect until the wakeup mask is set for the EC GPE).
+ */
+ acpi_ec_mark_gpe_for_wake();
return 0;
err_remove_notify:
diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c
index a0d0cecff55f..b74932307d69 100644
--- a/drivers/platform/x86/intel-vbtn.c
+++ b/drivers/platform/x86/intel-vbtn.c
@@ -176,6 +176,12 @@ static int intel_vbtn_probe(struct platform_device *device)
return -EBUSY;
device_init_wakeup(&device->dev, true);
+ /*
+ * In order for system wakeup to work, the EC GPE has to be marked as
+ * a wakeup one, so do that here (this setting will persist, but it has
+ * no effect until the wakeup mask is set for the EC GPE).
+ */
+ acpi_ec_mark_gpe_for_wake();
return 0;
}
@@ -195,22 +201,30 @@ static int intel_vbtn_remove(struct platform_device *device)
static int intel_vbtn_pm_prepare(struct device *dev)
{
- struct intel_vbtn_priv *priv = dev_get_drvdata(dev);
+ if (device_may_wakeup(dev)) {
+ struct intel_vbtn_priv *priv = dev_get_drvdata(dev);
- priv->wakeup_mode = true;
+ priv->wakeup_mode = true;
+ }
return 0;
}
-static int intel_vbtn_pm_resume(struct device *dev)
+static void intel_vbtn_pm_complete(struct device *dev)
{
struct intel_vbtn_priv *priv = dev_get_drvdata(dev);
priv->wakeup_mode = false;
+}
+
+static int intel_vbtn_pm_resume(struct device *dev)
+{
+ intel_vbtn_pm_complete(dev);
return 0;
}
static const struct dev_pm_ops intel_vbtn_pm_ops = {
.prepare = intel_vbtn_pm_prepare,
+ .complete = intel_vbtn_pm_complete,
.resume = intel_vbtn_pm_resume,
.restore = intel_vbtn_pm_resume,
.thaw = intel_vbtn_pm_resume,
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 3845c8fcc94e..4ed603a3b448 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -297,6 +297,9 @@ ACPI_GLOBAL(u8, acpi_gbl_system_awake_and_running);
#define ACPI_HW_DEPENDENT_RETURN_OK(prototype) \
ACPI_EXTERNAL_RETURN_OK(prototype)
+#define ACPI_HW_DEPENDENT_RETURN_UINT32(prototype) \
+ ACPI_EXTERNAL_RETURN_UINT32(prototype)
+
#define ACPI_HW_DEPENDENT_RETURN_VOID(prototype) \
ACPI_EXTERNAL_RETURN_VOID(prototype)
@@ -307,6 +310,9 @@ ACPI_GLOBAL(u8, acpi_gbl_system_awake_and_running);
#define ACPI_HW_DEPENDENT_RETURN_OK(prototype) \
static ACPI_INLINE prototype {return(AE_OK);}
+#define ACPI_HW_DEPENDENT_RETURN_UINT32(prototype) \
+ static ACPI_INLINE prototype {return(0);}
+
#define ACPI_HW_DEPENDENT_RETURN_VOID(prototype) \
static ACPI_INLINE prototype {return;}
@@ -738,7 +744,7 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
u32 gpe_number,
acpi_event_status
*event_status))
-ACPI_HW_DEPENDENT_RETURN_VOID(void acpi_dispatch_gpe(acpi_handle gpe_device, u32 gpe_number))
+ACPI_HW_DEPENDENT_RETURN_UINT32(u32 acpi_dispatch_gpe(acpi_handle gpe_device, u32 gpe_number))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable_all_gpes(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_runtime_gpes(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_wakeup_gpes(void))
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 9426b9aaed86..e65a4c5bbeae 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -931,6 +931,8 @@ int acpi_subsys_suspend_noirq(struct device *dev);
int acpi_subsys_suspend(struct device *dev);
int acpi_subsys_freeze(struct device *dev);
int acpi_subsys_poweroff(struct device *dev);
+void acpi_ec_mark_gpe_for_wake(void);
+void acpi_ec_set_gpe_wake_mask(u8 action);
#else
static inline int acpi_subsys_prepare(struct device *dev) { return 0; }
static inline void acpi_subsys_complete(struct device *dev) {}
@@ -939,6 +941,8 @@ static inline int acpi_subsys_suspend_noirq(struct device *dev) { return 0; }
static inline int acpi_subsys_suspend(struct device *dev) { return 0; }
static inline int acpi_subsys_freeze(struct device *dev) { return 0; }
static inline int acpi_subsys_poweroff(struct device *dev) { return 0; }
+static inline void acpi_ec_mark_gpe_for_wake(void) {}
+static inline void acpi_ec_set_gpe_wake_mask(u8 action) {}
#endif
#ifdef CONFIG_ACPI
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 5b8328a99b2a..0e9cdb3efda7 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -238,6 +238,7 @@ extern void teardown_percpu_nmi(unsigned int irq);
/* The following three functions are for the core kernel use only. */
extern void suspend_device_irqs(void);
extern void resume_device_irqs(void);
+extern void rearm_wake_irq(unsigned int irq);
/**
* struct irq_affinity_notify - context for notification of IRQ affinity changes
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 3619a870eaa4..4c441be03079 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -712,8 +712,6 @@ struct dev_pm_domain {
extern void device_pm_lock(void);
extern void dpm_resume_start(pm_message_t state);
extern void dpm_resume_end(pm_message_t state);
-extern void dpm_noirq_resume_devices(pm_message_t state);
-extern void dpm_noirq_end(void);
extern void dpm_resume_noirq(pm_message_t state);
extern void dpm_resume_early(pm_message_t state);
extern void dpm_resume(pm_message_t state);
@@ -722,8 +720,6 @@ extern void dpm_complete(pm_message_t state);
extern void device_pm_unlock(void);
extern int dpm_suspend_end(pm_message_t state);
extern int dpm_suspend_start(pm_message_t state);
-extern void dpm_noirq_begin(void);
-extern int dpm_noirq_suspend_devices(pm_message_t state);
extern int dpm_suspend_noirq(pm_message_t state);
extern int dpm_suspend_late(pm_message_t state);
extern int dpm_suspend(pm_message_t state);
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 9c0ad1a3a727..6fc8843f1c9e 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -190,8 +190,9 @@ struct platform_suspend_ops {
struct platform_s2idle_ops {
int (*begin)(void);
int (*prepare)(void);
+ int (*prepare_late)(void);
void (*wake)(void);
- void (*sync)(void);
+ void (*restore_early)(void);
void (*restore)(void);
void (*end)(void);
};
@@ -336,6 +337,7 @@ static inline void pm_set_suspend_via_firmware(void) {}
static inline void pm_set_resume_via_firmware(void) {}
static inline bool pm_suspend_via_firmware(void) { return false; }
static inline bool pm_resume_via_firmware(void) { return false; }
+static inline bool pm_suspend_no_platform(void) { return false; }
static inline bool pm_suspend_default_s2idle(void) { return false; }
static inline void suspend_set_ops(const struct platform_suspend_ops *ops) {}
diff --git a/kernel/irq/pm.c b/kernel/irq/pm.c
index d6961d3c6f9e..8f557fa1f4fe 100644
--- a/kernel/irq/pm.c
+++ b/kernel/irq/pm.c
@@ -177,6 +177,26 @@ static void resume_irqs(bool want_early)
}
/**
+ * rearm_wake_irq - rearm a wakeup interrupt line after signaling wakeup
+ * @irq: Interrupt to rearm
+ */
+void rearm_wake_irq(unsigned int irq)
+{
+ unsigned long flags;
+ struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL);
+
+ if (!desc || !(desc->istate & IRQS_SUSPENDED) ||
+ !irqd_is_wakeup_set(&desc->irq_data))
+ return;
+
+ desc->istate &= ~IRQS_SUSPENDED;
+ irqd_set(&desc->irq_data, IRQD_WAKEUP_ARMED);
+ __enable_irq(desc);
+
+ irq_put_desc_busunlock(desc, flags);
+}
+
+/**
* irq_pm_syscore_ops - enable interrupt lines early
*
* Enable all interrupt lines with %IRQF_EARLY_RESUME set.
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index c874a7026e24..f3b7239f1892 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -121,43 +121,25 @@ static void s2idle_loop(void)
{
pm_pr_dbg("suspend-to-idle\n");
+ /*
+ * Suspend-to-idle equals:
+ * frozen processes + suspended devices + idle processors.
+ * Thus s2idle_enter() should be called right after all devices have
+ * been suspended.
+ *
+ * Wakeups during the noirq suspend of devices may be spurious, so try
+ * to avoid them upfront.
+ */
for (;;) {
- int error;
-
- dpm_noirq_begin();
-
- /*
- * Suspend-to-idle equals
- * frozen processes + suspended devices + idle processors.
- * Thus s2idle_enter() should be called right after
- * all devices have been suspended.
- *
- * Wakeups during the noirq suspend of devices may be spurious,
- * so prevent them from terminating the loop right away.
- */
- error = dpm_noirq_suspend_devices(PMSG_SUSPEND);
- if (!error)
- s2idle_enter();
- else if (error == -EBUSY && pm_wakeup_pending())
- error = 0;
-
- if (!error && s2idle_ops && s2idle_ops->wake)
+ if (s2idle_ops && s2idle_ops->wake)
s2idle_ops->wake();
- dpm_noirq_resume_devices(PMSG_RESUME);
-
- dpm_noirq_end();
-
- if (error)
- break;
-
- if (s2idle_ops && s2idle_ops->sync)
- s2idle_ops->sync();
-
if (pm_wakeup_pending())
break;
pm_wakeup_clear(false);
+
+ s2idle_enter();
}
pm_pr_dbg("resume from suspend-to-idle\n");
@@ -271,14 +253,21 @@ static int platform_suspend_prepare_late(suspend_state_t state)
static int platform_suspend_prepare_noirq(suspend_state_t state)
{
- return state != PM_SUSPEND_TO_IDLE && suspend_ops->prepare_late ?
- suspend_ops->prepare_late() : 0;
+ if (state == PM_SUSPEND_TO_IDLE)
+ return s2idle_ops && s2idle_ops->prepare_late ?
+ s2idle_ops->prepare_late() : 0;
+
+ return suspend_ops->prepare_late ? suspend_ops->prepare_late() : 0;
}
static void platform_resume_noirq(suspend_state_t state)
{
- if (state != PM_SUSPEND_TO_IDLE && suspend_ops->wake)
+ if (state == PM_SUSPEND_TO_IDLE) {
+ if (s2idle_ops && s2idle_ops->restore_early)
+ s2idle_ops->restore_early();
+ } else if (suspend_ops->wake) {
suspend_ops->wake();
+ }
}
static void platform_resume_early(suspend_state_t state)
@@ -415,11 +404,6 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)
if (error)
goto Devices_early_resume;
- if (state == PM_SUSPEND_TO_IDLE && pm_test_level != TEST_PLATFORM) {
- s2idle_loop();
- goto Platform_early_resume;
- }
-
error = dpm_suspend_noirq(PMSG_SUSPEND);
if (error) {
pr_err("noirq suspend of devices failed\n");
@@ -432,6 +416,11 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)
if (suspend_test(TEST_PLATFORM))
goto Platform_wake;
+ if (state == PM_SUSPEND_TO_IDLE) {
+ s2idle_loop();
+ goto Platform_wake;
+ }
+
error = suspend_disable_secondary_cpus();
if (error || suspend_test(TEST_CPUS))
goto Enable_cpus;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-12 08:05:22 +0000