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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: Lv Zheng <lv.zheng@intel.com>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Lv Zheng 2016-08-04 16:43:45 +08:00 committed by Rafael J. Wysocki
parent 6bd483c036
commit 18864cc489
2 changed files with 29 additions and 12 deletions
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2
drivers/acpi/sleep.c
View File

@ -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;

39
drivers/acpi/sysfs.c
View File

@ -597,14 +597,27 @@ static ssize_t counter_show(struct kobject *kobj,
if (result)
goto end;
if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER))
size += sprintf(buf + size, " invalid");
else if (status & ACPI_EVENT_FLAG_ENABLED)
size += sprintf(buf + size, " enabled");
else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
size += sprintf(buf + size, " wake_enabled");
if (status & ACPI_EVENT_FLAG_ENABLE_SET)
size += sprintf(buf + size, " EN");
else
size += sprintf(buf + size, " disabled");
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)
size += sprintf(buf + size, " enabled ");
else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
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;