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Diffstat (limited to 'drivers/acpi/acpica/hwgpe.c')
-rw-r--r--drivers/acpi/acpica/hwgpe.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index 1b4252bdcd0b..f4c285c2f595 100644
--- a/drivers/acpi/acpica/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -446,6 +446,53 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
/******************************************************************************
*
+ * FUNCTION: acpi_hw_get_gpe_block_status
+ *
+ * PARAMETERS: gpe_xrupt_info - GPE Interrupt info
+ * gpe_block - Gpe Block info
+ *
+ * RETURN: Success
+ *
+ * DESCRIPTION: Produce a combined GPE status bits mask for the given block.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_hw_get_gpe_block_status(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block,
+ void *ret_ptr)
+{
+ struct acpi_gpe_register_info *gpe_register_info;
+ u64 in_enable, in_status;
+ acpi_status status;
+ u8 *ret = ret_ptr;
+ u32 i;
+
+ /* Examine each GPE Register within the block */
+
+ for (i = 0; i < gpe_block->register_count; i++) {
+ gpe_register_info = &gpe_block->register_info[i];
+
+ status = acpi_hw_read(&in_enable,
+ &gpe_register_info->enable_address);
+ if (ACPI_FAILURE(status)) {
+ continue;
+ }
+
+ status = acpi_hw_read(&in_status,
+ &gpe_register_info->status_address);
+ if (ACPI_FAILURE(status)) {
+ continue;
+ }
+
+ *ret |= in_enable & in_status;
+ }
+
+ return (AE_OK);
+}
+
+/******************************************************************************
+ *
* FUNCTION: acpi_hw_disable_all_gpes
*
* PARAMETERS: None
@@ -510,4 +557,28 @@ acpi_status acpi_hw_enable_all_wakeup_gpes(void)
return_ACPI_STATUS(status);
}
+/******************************************************************************
+ *
+ * FUNCTION: acpi_hw_check_all_gpes
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Combined status of all GPEs
+ *
+ * DESCRIPTION: Check all enabled GPEs in all GPE blocks and return TRUE if the
+ * status bit is set for at least one of them of FALSE otherwise.
+ *
+ ******************************************************************************/
+
+u8 acpi_hw_check_all_gpes(void)
+{
+ u8 ret = 0;
+
+ ACPI_FUNCTION_TRACE(acpi_hw_check_all_gpes);
+
+ (void)acpi_ev_walk_gpe_list(acpi_hw_get_gpe_block_status, &ret);
+
+ return (ret != 0);
+}
+
#endif /* !ACPI_REDUCED_HARDWARE */