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ACPICA: Remove wakeup GPE reference counting which is not used

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After the previous patch that introduced acpi_gpe_wakeup() and
modified the ACPI suspend and wakeup code to use it, the third
argument of acpi_{enable|disable}_gpe() and the GPE wakeup
reference counter are not necessary any more.  Remove them and
modify all of the users of acpi_{enable|disable}_gpe()
accordingly.  Also drop GPE type constants that aren't used
any more.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Rafael J. Wysocki 2010-07-01 10:11:45 +08:00 committed by Len Brown
parent e8b6f97010
commit a44061aa8b
12 changed files with 50 additions and 135 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/acpi/acpica/acevents.h
View File

@ -78,7 +78,7 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node *node,
u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list);
acpi_status
acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info);
acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info);
struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
u32 gpe_number);

1
drivers/acpi/acpica/aclocal.h
View File

@ -429,7 +429,6 @@ struct acpi_gpe_event_info {
u8 flags; /* Misc info about this GPE */
u8 gpe_number; /* This GPE */
u8 runtime_count; /* References to a run GPE */
u8 wakeup_count; /* References to a wake GPE */
};
/* Information about a GPE register pair, one per each status/enable pair in an array */

21
drivers/acpi/acpica/evgpe.c
View File

@ -54,24 +54,24 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context);
/*******************************************************************************
*
* FUNCTION: acpi_ev_update_gpe_enable_masks
* FUNCTION: acpi_ev_update_gpe_enable_mask
*
* PARAMETERS: gpe_event_info - GPE to update
*
* RETURN: Status
*
* DESCRIPTION: Updates GPE register enable masks based upon whether there are
* references (either wake or run) to this GPE
* DESCRIPTION: Updates GPE register enable mask based upon whether there are
* runtime references to this GPE
*
******************************************************************************/
acpi_status
acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info)
acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info)
{
struct acpi_gpe_register_info *gpe_register_info;
u32 register_bit;
ACPI_FUNCTION_TRACE(ev_update_gpe_enable_masks);
ACPI_FUNCTION_TRACE(ev_update_gpe_enable_mask);
gpe_register_info = gpe_event_info->register_info;
if (!gpe_register_info) {
@ -81,19 +81,14 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info)
register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info,
gpe_register_info);
/* Clear the wake/run bits up front */
/* Clear the run bit up front */
ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake, register_bit);
ACPI_CLEAR_BIT(gpe_register_info->enable_for_run, register_bit);
/* Set the mask bits only if there are references to this GPE */
/* Set the mask bit only if there are references to this GPE */
if (gpe_event_info->runtime_count) {
ACPI_SET_BIT(gpe_register_info->enable_for_run, register_bit);
}
if (gpe_event_info->wakeup_count) {
ACPI_SET_BIT(gpe_register_info->enable_for_wake, register_bit);
ACPI_SET_BIT(gpe_register_info->enable_for_run, (u8)register_bit);
}
return_ACPI_STATUS(AE_OK);

3
drivers/acpi/acpica/evgpeblk.c
View File

@ -529,8 +529,7 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
/* Enable this GPE */
status = acpi_enable_gpe(gpe_device, gpe_number,
ACPI_GPE_TYPE_RUNTIME);
status = acpi_enable_gpe(gpe_device, gpe_number);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not enable GPE 0x%02X",

3
drivers/acpi/acpica/evgpeinit.c
View File

@ -482,8 +482,7 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
gpe_device = NULL;
}
status = acpi_enable_gpe(gpe_device, gpe_number,
ACPI_GPE_TYPE_RUNTIME);
status = acpi_enable_gpe(gpe_device, gpe_number);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not enable GPE 0x%02X",

119
drivers/acpi/acpica/evxfevnt.c
View File

@ -352,12 +352,13 @@ acpi_status acpi_gpe_wakeup(acpi_handle gpe_device, u32 gpe_number, u8 action)
switch (action) {
case ACPI_GPE_ENABLE:
ACPI_SET_BIT(gpe_register_info->enable_for_wake, register_bit);
ACPI_SET_BIT(gpe_register_info->enable_for_wake,
(u8)register_bit);
break;
case ACPI_GPE_DISABLE:
ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
register_bit);
(u8)register_bit);
break;
default:
@ -379,17 +380,14 @@ ACPI_EXPORT_SYMBOL(acpi_gpe_wakeup)
*
* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
* gpe_number - GPE level within the GPE block
* gpe_type - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE
* or both
*
* RETURN: Status
*
* DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
* hardware-enabled (for runtime GPEs), or the GPE register mask
* is updated (for wake GPEs).
* hardware-enabled.
*
******************************************************************************/
acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
{
acpi_status status = AE_OK;
struct acpi_gpe_event_info *gpe_event_info;
@ -397,12 +395,6 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
ACPI_FUNCTION_TRACE(acpi_enable_gpe);
/* Parameter validation */
if (!gpe_type || (gpe_type & ~ACPI_GPE_TYPE_WAKE_RUN)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Ensure that we have a valid GPE number */
@ -413,46 +405,19 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
goto unlock_and_exit;
}
if (gpe_type & ACPI_GPE_TYPE_RUNTIME) {
if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
status = AE_LIMIT; /* Too many references */
goto unlock_and_exit;
}
gpe_event_info->runtime_count++;
if (gpe_event_info->runtime_count == 1) {
status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
if (ACPI_SUCCESS(status)) {
status = acpi_clear_and_enable_gpe(gpe_event_info);
}
if (ACPI_FAILURE(status)) {
gpe_event_info->runtime_count--;
goto unlock_and_exit;
}
}
if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
status = AE_LIMIT; /* Too many references */
goto unlock_and_exit;
}
if (gpe_type & ACPI_GPE_TYPE_WAKE) {
/* The GPE must have the ability to wake the system */
if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
status = AE_TYPE;
goto unlock_and_exit;
gpe_event_info->runtime_count++;
if (gpe_event_info->runtime_count == 1) {
status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
if (ACPI_SUCCESS(status)) {
status = acpi_clear_and_enable_gpe(gpe_event_info);
}
if (gpe_event_info->wakeup_count == ACPI_UINT8_MAX) {
status = AE_LIMIT; /* Too many references */
goto unlock_and_exit;
}
/*
* Update the enable mask on the first wakeup reference. Wake GPEs
* are only hardware-enabled just before sleeping.
*/
gpe_event_info->wakeup_count++;
if (gpe_event_info->wakeup_count == 1) {
status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
if (ACPI_FAILURE(status)) {
gpe_event_info->runtime_count--;
}
}
@ -468,8 +433,6 @@ ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
*
* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
* gpe_number - GPE level within the GPE block
* gpe_type - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE
* or both
*
* RETURN: Status
*
@ -478,7 +441,7 @@ ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
* the GPE mask bit disabled (for wake GPEs)
*
******************************************************************************/
acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
{
acpi_status status = AE_OK;
struct acpi_gpe_event_info *gpe_event_info;
@ -486,12 +449,6 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type
ACPI_FUNCTION_TRACE(acpi_disable_gpe);
/* Parameter validation */
if (!gpe_type || (gpe_type & ~ACPI_GPE_TYPE_WAKE_RUN)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Ensure that we have a valid GPE number */
@ -504,41 +461,21 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type
/* Hardware-disable a runtime GPE on removal of the last reference */
if (gpe_type & ACPI_GPE_TYPE_RUNTIME) {
if (!gpe_event_info->runtime_count) {
status = AE_LIMIT; /* There are no references to remove */
goto unlock_and_exit;
}
gpe_event_info->runtime_count--;
if (!gpe_event_info->runtime_count) {
status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
if (ACPI_SUCCESS(status)) {
status = acpi_hw_low_set_gpe(gpe_event_info,
ACPI_GPE_DISABLE);
}
if (ACPI_FAILURE(status)) {
gpe_event_info->runtime_count++;
goto unlock_and_exit;
}
}
if (!gpe_event_info->runtime_count) {
status = AE_LIMIT; /* There are no references to remove */
goto unlock_and_exit;
}
/*
* Update masks for wake GPE on removal of the last reference.
* No need to hardware-disable wake GPEs here, they are not currently
* enabled.
*/
if (gpe_type & ACPI_GPE_TYPE_WAKE) {
if (!gpe_event_info->wakeup_count) {
status = AE_LIMIT; /* There are no references to remove */
goto unlock_and_exit;
gpe_event_info->runtime_count--;
if (!gpe_event_info->runtime_count) {
status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
if (ACPI_SUCCESS(status)) {
status =
acpi_hw_low_set_gpe(gpe_event_info,
ACPI_GPE_DISABLE);
}
gpe_event_info->wakeup_count--;
if (!gpe_event_info->wakeup_count) {
status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
if (ACPI_FAILURE(status)) {
gpe_event_info->runtime_count++;
}
}

6
drivers/acpi/button.c
View File

@ -424,8 +424,7 @@ static int acpi_button_add(struct acpi_device *device)
if (device->wakeup.flags.valid) {
/* Button's GPE is run-wake GPE */
acpi_enable_gpe(device->wakeup.gpe_device,
device->wakeup.gpe_number,
ACPI_GPE_TYPE_RUNTIME);
device->wakeup.gpe_number);
device->wakeup.run_wake_count++;
device->wakeup.state.enabled = 1;
}
@ -448,8 +447,7 @@ static int acpi_button_remove(struct acpi_device *device, int type)
if (device->wakeup.flags.valid) {
acpi_disable_gpe(device->wakeup.gpe_device,
device->wakeup.gpe_number,
ACPI_GPE_TYPE_RUNTIME);
device->wakeup.gpe_number);
device->wakeup.run_wake_count--;
device->wakeup.state.enabled = 0;
}

6
drivers/acpi/ec.c
View File

@ -822,7 +822,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
if (ACPI_FAILURE(status))
return -ENODEV;
acpi_enable_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
acpi_enable_gpe(NULL, ec->gpe);
status = acpi_install_address_space_handler(ec->handle,
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler,
@ -839,7 +839,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
} else {
acpi_remove_gpe_handler(NULL, ec->gpe,
&acpi_ec_gpe_handler);
acpi_disable_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
acpi_disable_gpe(NULL, ec->gpe);
return -ENODEV;
}
}
@ -850,7 +850,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
static void ec_remove_handlers(struct acpi_ec *ec)
{
acpi_disable_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
acpi_disable_gpe(NULL, ec->gpe);
if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle,
ACPI_ADR_SPACE_EC, &acpi_ec_space_handler)))
pr_err(PREFIX "failed to remove space handler\n");

6
drivers/acpi/system.c
View File

@ -388,12 +388,10 @@ static ssize_t counter_set(struct kobject *kobj,
if (index < num_gpes) {
if (!strcmp(buf, "disable\n") &&
(status & ACPI_EVENT_FLAG_ENABLED))
result = acpi_disable_gpe(handle, index,
ACPI_GPE_TYPE_RUNTIME);
result = acpi_disable_gpe(handle, index);
else if (!strcmp(buf, "enable\n") &&
!(status & ACPI_EVENT_FLAG_ENABLED))
result = acpi_enable_gpe(handle, index,
ACPI_GPE_TYPE_RUNTIME);
result = acpi_enable_gpe(handle, index);
else if (!strcmp(buf, "clear\n") &&
(status & ACPI_EVENT_FLAG_SET))
result = acpi_clear_gpe(handle, index);

6
drivers/pci/pci-acpi.c
View File

@ -295,14 +295,12 @@ static int acpi_dev_run_wake(struct device *phys_dev, bool enable)
if (!dev->wakeup.run_wake_count++) {
acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
acpi_enable_gpe(dev->wakeup.gpe_device,
dev->wakeup.gpe_number,
ACPI_GPE_TYPE_RUNTIME);
dev->wakeup.gpe_number);
}
} else if (dev->wakeup.run_wake_count > 0) {
if (!--dev->wakeup.run_wake_count) {
acpi_disable_gpe(dev->wakeup.gpe_device,
dev->wakeup.gpe_number,
ACPI_GPE_TYPE_RUNTIME);
dev->wakeup.gpe_number);
acpi_disable_wakeup_device_power(dev);
}
} else {

6
include/acpi/acpixf.h
View File

@ -284,11 +284,9 @@ acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status);
*/
acpi_status acpi_set_gpe(acpi_handle gpe_device, u32 gpe_number, u8 action);
acpi_status
acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type);
acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number);
acpi_status
acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type);
acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number);
acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number);

6
include/acpi/actypes.h
View File

@ -669,12 +669,6 @@ typedef u32 acpi_event_status;
#define ACPI_GPE_DISABLE 1
#define ACPI_GPE_COND_ENABLE 2
/* gpe_types for acpi_enable_gpe and acpi_disable_gpe */
#define ACPI_GPE_TYPE_WAKE (u8) 0x01
#define ACPI_GPE_TYPE_RUNTIME (u8) 0x02
#define ACPI_GPE_TYPE_WAKE_RUN (u8) 0x03
/*
* GPE info flags - Per GPE
* +-------+---+-+-+