+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_set_gpe_type
+ *
+ * PARAMETERS: gpe_event_info - GPE to set
+ * Type - New type
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Sets the new type for the GPE (wake, run, or wake/run)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_set_gpe_type (
+ struct acpi_gpe_event_info *gpe_event_info,
+ u8 type)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_set_gpe_type");
+
+
+ /* Validate type and update register enable masks */
+
+ switch (type) {
+ case ACPI_GPE_TYPE_WAKE:
+ case ACPI_GPE_TYPE_RUNTIME:
+ case ACPI_GPE_TYPE_WAKE_RUN:
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /* Disable the GPE if currently enabled */
+
+ status = acpi_ev_disable_gpe (gpe_event_info);
+
+ /* Type was validated above */
+
+ gpe_event_info->flags &= ~ACPI_GPE_TYPE_MASK; /* Clear type bits */
+ gpe_event_info->flags |= type; /* Insert type */
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_update_gpe_enable_masks
+ *
+ * PARAMETERS: gpe_event_info - GPE to update
+ * Type - What to do: ACPI_GPE_DISABLE or
+ * ACPI_GPE_ENABLE
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Updates GPE register enable masks based on the GPE type
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_update_gpe_enable_masks (
+ struct acpi_gpe_event_info *gpe_event_info,
+ u8 type)
+{
+ struct acpi_gpe_register_info *gpe_register_info;
+ u8 register_bit;
+
+
+ ACPI_FUNCTION_TRACE ("ev_update_gpe_enable_masks");
+
+
+ gpe_register_info = gpe_event_info->register_info;
+ if (!gpe_register_info) {
+ return_ACPI_STATUS (AE_NOT_EXIST);
+ }
+ register_bit = gpe_event_info->register_bit;
+
+ /* 1) Disable case. Simply clear all enable bits */
+
+ if (type == ACPI_GPE_DISABLE) {
+ ACPI_CLEAR_BIT (gpe_register_info->enable_for_wake, register_bit);
+ ACPI_CLEAR_BIT (gpe_register_info->enable_for_run, register_bit);
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /* 2) Enable case. Set/Clear the appropriate enable bits */
+
+ switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
+ case ACPI_GPE_TYPE_WAKE:
+ ACPI_SET_BIT (gpe_register_info->enable_for_wake, register_bit);
+ ACPI_CLEAR_BIT (gpe_register_info->enable_for_run, register_bit);
+ break;
+
+ case ACPI_GPE_TYPE_RUNTIME:
+ ACPI_CLEAR_BIT (gpe_register_info->enable_for_wake, register_bit);
+ ACPI_SET_BIT (gpe_register_info->enable_for_run, register_bit);
+ break;
+
+ case ACPI_GPE_TYPE_WAKE_RUN:
+ ACPI_SET_BIT (gpe_register_info->enable_for_wake, register_bit);
+ ACPI_SET_BIT (gpe_register_info->enable_for_run, register_bit);
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_enable_gpe
+ *
+ * PARAMETERS: gpe_event_info - GPE to enable
+ * write_to_hardware - Enable now, or just mark data structs
+ * (WAKE GPEs should be deferred)
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Enable a GPE based on the GPE type
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_enable_gpe (
+ struct acpi_gpe_event_info *gpe_event_info,
+ u8 write_to_hardware)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_enable_gpe");
+
+
+ /* Make sure HW enable masks are updated */
+
+ status = acpi_ev_update_gpe_enable_masks (gpe_event_info, ACPI_GPE_ENABLE);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Mark wake-enabled or HW enable, or both */
+
+ switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
+ case ACPI_GPE_TYPE_WAKE:
+
+ ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
+ break;
+
+ case ACPI_GPE_TYPE_WAKE_RUN:
+
+ ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
+
+ /*lint -fallthrough */
+
+ case ACPI_GPE_TYPE_RUNTIME:
+
+ ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_RUN_ENABLED);
+
+ if (write_to_hardware) {
+ /* Clear the GPE (of stale events), then enable it */
+
+ status = acpi_hw_clear_gpe (gpe_event_info);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Enable the requested runtime GPE */
+
+ status = acpi_hw_write_gpe_enable_reg (gpe_event_info);
+ }
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_disable_gpe
+ *
+ * PARAMETERS: gpe_event_info - GPE to disable
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Disable a GPE based on the GPE type
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_disable_gpe (
+ struct acpi_gpe_event_info *gpe_event_info)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_disable_gpe");
+
+
+ if (!(gpe_event_info->flags & ACPI_GPE_ENABLE_MASK)) {
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /* Make sure HW enable masks are updated */
+
+ status = acpi_ev_update_gpe_enable_masks (gpe_event_info, ACPI_GPE_DISABLE);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Mark wake-disabled or HW disable, or both */
+
+ switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
+ case ACPI_GPE_TYPE_WAKE:
+ ACPI_CLEAR_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
+ break;
+
+ case ACPI_GPE_TYPE_WAKE_RUN:
+ ACPI_CLEAR_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
+
+ /*lint -fallthrough */
+
+ case ACPI_GPE_TYPE_RUNTIME:
+
+ /* Disable the requested runtime GPE */
+
+ ACPI_CLEAR_BIT (gpe_event_info->flags, ACPI_GPE_RUN_ENABLED);
+ status = acpi_hw_write_gpe_enable_reg (gpe_event_info);
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+