Commit 18864cc4 authored by Lv Zheng's avatar Lv Zheng Committed by Rafael J. Wysocki
Browse files

ACPI / sysfs: Use new GPE masking mechanism in GPE interface 



Now GPE can be masked via the new acpi_mask_gpe() API and this patch
modifies /sys/firmware/acpi/interrupts/gpexx to use this new facility.

Writes "mask/unmask" to this file now invokes acpi_mask_gpe().

Reads from this file now returns new "EN/STS" when the corresponding GPE
hardware register's EN/STS bits are flagged, and new "masked/unmasked"
attribute to indicate the status of the masking mechanism.

Signed-off-by: default avatarLv Zheng <lv.zheng@intel.com>
[ rjw: Subject ]
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 6bd483c0

drivers/acpi/sleep.c

+1 −1
Original line number Diff line number Diff line
@@ -572,7 +572,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state) 


		acpi_get_event_status(ACPI_EVENT_POWER_BUTTON, &pwr_btn_status);



		if (pwr_btn_status & ACPI_EVENT_FLAG_SET) {

		if (pwr_btn_status & ACPI_EVENT_FLAG_STATUS_SET) {

			acpi_clear_event(ACPI_EVENT_POWER_BUTTON);

			/* Flag for later */

			pwr_btn_event_pending = true;

drivers/acpi/sysfs.c

+25 −8
Original line number Diff line number Diff line
@@ -597,6 +597,15 @@ static ssize_t counter_show(struct kobject *kobj, 
	if (result)

		goto end;



	if (status & ACPI_EVENT_FLAG_ENABLE_SET)

		size += sprintf(buf + size, "  EN");

	else

		size += sprintf(buf + size, "    ");

	if (status & ACPI_EVENT_FLAG_STATUS_SET)

		size += sprintf(buf + size, " STS");

	else

		size += sprintf(buf + size, "    ");



	if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER))

		size += sprintf(buf + size, " invalid     ");

	else if (status & ACPI_EVENT_FLAG_ENABLED)
@@ -605,6 +614,10 @@ static ssize_t counter_show(struct kobject *kobj, 
		size += sprintf(buf + size, " wake_enabled");

	else

		size += sprintf(buf + size, " disabled    ");

	if (status & ACPI_EVENT_FLAG_MASKED)

		size += sprintf(buf + size, " masked  ");

	else

		size += sprintf(buf + size, " unmasked");



end:

	size += sprintf(buf + size, "\n");
@@ -655,8 +668,12 @@ static ssize_t counter_set(struct kobject *kobj, 
			 !(status & ACPI_EVENT_FLAG_ENABLED))

			result = acpi_enable_gpe(handle, index);

		else if (!strcmp(buf, "clear\n") &&

			 (status & ACPI_EVENT_FLAG_SET))

			 (status & ACPI_EVENT_FLAG_STATUS_SET))

			result = acpi_clear_gpe(handle, index);

		else if (!strcmp(buf, "mask\n"))

			result = acpi_mask_gpe(handle, index, TRUE);

		else if (!strcmp(buf, "unmask\n"))

			result = acpi_mask_gpe(handle, index, FALSE);

		else if (!kstrtoul(buf, 0, &tmp))

			all_counters[index].count = tmp;

		else
@@ -664,13 +681,13 @@ static ssize_t counter_set(struct kobject *kobj, 
	} else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {

		int event = index - num_gpes;

		if (!strcmp(buf, "disable\n") &&

		    (status & ACPI_EVENT_FLAG_ENABLED))

		    (status & ACPI_EVENT_FLAG_ENABLE_SET))

			result = acpi_disable_event(event, ACPI_NOT_ISR);

		else if (!strcmp(buf, "enable\n") &&

			 !(status & ACPI_EVENT_FLAG_ENABLED))

			 !(status & ACPI_EVENT_FLAG_ENABLE_SET))

			result = acpi_enable_event(event, ACPI_NOT_ISR);

		else if (!strcmp(buf, "clear\n") &&

			 (status & ACPI_EVENT_FLAG_SET))

			 (status & ACPI_EVENT_FLAG_STATUS_SET))

			result = acpi_clear_event(event);

		else if (!kstrtoul(buf, 0, &tmp))

			all_counters[index].count = tmp;

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