diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/acpi/acpica/evgpe.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index 7a6a3e6f4be0..f226eac314db 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -137,6 +137,79 @@ acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info) /******************************************************************************* * + * FUNCTION: acpi_raw_enable_gpe + * + * PARAMETERS: gpe_event_info - GPE to enable + * + * RETURN: Status + * + * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is + * hardware-enabled. + * + ******************************************************************************/ + +acpi_status acpi_raw_enable_gpe(struct acpi_gpe_event_info *gpe_event_info) +{ + acpi_status status = AE_OK; + + if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) { + return_ACPI_STATUS(AE_LIMIT); + } + + 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_ev_enable_gpe(gpe_event_info); + } + + if (ACPI_FAILURE(status)) { + gpe_event_info->runtime_count--; + } + } + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_raw_disable_gpe + * + * PARAMETERS: gpe_event_info - GPE to disable + * + * RETURN: Status + * + * DESCRIPTION: Remove a reference to a GPE. When the last reference is + * removed, the GPE is hardware-disabled. + * + ******************************************************************************/ + +acpi_status acpi_raw_disable_gpe(struct acpi_gpe_event_info *gpe_event_info) +{ + acpi_status status = AE_OK; + + if (!gpe_event_info->runtime_count) { + return_ACPI_STATUS(AE_LIMIT); + } + + 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); + } + + if (ACPI_FAILURE(status)) { + gpe_event_info->runtime_count++; + } + } + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * * FUNCTION: acpi_ev_low_get_gpe_info * * PARAMETERS: gpe_number - Raw GPE number |