19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
67 	struct amdgpu_atif_functions functions;  member
86 	struct amdgpu_atcs_functions functions;  member
97  * amdgpu_atif_call - call an ATIF method
123 		atif_arg_elements[1].buffer.length = params->length;  in amdgpu_atif_call()
124 		atif_arg_elements[1].buffer.pointer = params->pointer;  in amdgpu_atif_call()
131 	status = acpi_evaluate_object(atif->handle, NULL, &atif_arg,  in amdgpu_atif_call()
146  * amdgpu_atif_parse_notification - parse supported notifications
157 	n->thermal_state = mask & ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED;  in amdgpu_atif_parse_notification()
158 	n->forced_power_state = mask & ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED;  in amdgpu_atif_parse_notification()
159 	n->system_power_state = mask & ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED;  in amdgpu_atif_parse_notification()
160 	n->brightness_change = mask & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED;  in amdgpu_atif_parse_notification()
161 	n->dgpu_display_event = mask & ATIF_DGPU_DISPLAY_EVENT_SUPPORTED;  in amdgpu_atif_parse_notification()
162 	n->gpu_package_power_limit = mask & ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST_SUPPORTED;  in amdgpu_atif_parse_notification()
166  * amdgpu_atif_parse_functions - parse supported functions
168  * @f: supported functions struct
169  * @mask: supported functions mask from ATIF
171  * Use the supported functions mask from ATIF function
172  * ATIF_FUNCTION_VERIFY_INTERFACE to determine what functions
177 	f->system_params = mask & ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED;  in amdgpu_atif_parse_functions()
178 	f->sbios_requests = mask & ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED;  in amdgpu_atif_parse_functions()
179 	f->temperature_change = mask & ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED;  in amdgpu_atif_parse_functions()
180 	f->query_backlight_transfer_characteristics =  in amdgpu_atif_parse_functions()
182 	f->ready_to_undock = mask & ATIF_READY_TO_UNDOCK_NOTIFICATION_SUPPORTED;  in amdgpu_atif_parse_functions()
183 	f->external_gpu_information = mask & ATIF_GET_EXTERNAL_GPU_INFORMATION_SUPPORTED;  in amdgpu_atif_parse_functions()
187  * amdgpu_atif_verify_interface - verify ATIF
205 		return -EIO;  in amdgpu_atif_verify_interface()
209 	size = *(u16 *) info->buffer.pointer;  in amdgpu_atif_verify_interface()
212 		err = -EINVAL;  in amdgpu_atif_verify_interface()
213 		goto out;  in amdgpu_atif_verify_interface()
217 	memcpy(&output, info->buffer.pointer, size);  in amdgpu_atif_verify_interface()
222 	amdgpu_atif_parse_notification(&atif->notifications, output.notification_mask);  in amdgpu_atif_verify_interface()
223 	amdgpu_atif_parse_functions(&atif->functions, output.function_bits);  in amdgpu_atif_verify_interface()
225 out:  in amdgpu_atif_verify_interface()
231  * amdgpu_atif_get_notification_params - determine notify configuration
244 	struct amdgpu_atif_notification_cfg *n = &atif->notification_cfg;  in amdgpu_atif_get_notification_params()
252 		err = -EIO;  in amdgpu_atif_get_notification_params()
253 		goto out;  in amdgpu_atif_get_notification_params()
256 	size = *(u16 *) info->buffer.pointer;  in amdgpu_atif_get_notification_params()
258 		err = -EINVAL;  in amdgpu_atif_get_notification_params()
259 		goto out;  in amdgpu_atif_get_notification_params()
264 	memcpy(&params, info->buffer.pointer, size);  in amdgpu_atif_get_notification_params()
271 		n->enabled = false;  in amdgpu_atif_get_notification_params()
272 		n->command_code = 0;  in amdgpu_atif_get_notification_params()
274 		n->enabled = true;  in amdgpu_atif_get_notification_params()
275 		n->command_code = 0x81;  in amdgpu_atif_get_notification_params()
278 			err = -EINVAL;  in amdgpu_atif_get_notification_params()
279 			goto out;  in amdgpu_atif_get_notification_params()
281 		n->enabled = true;  in amdgpu_atif_get_notification_params()
282 		n->command_code = params.command_code;  in amdgpu_atif_get_notification_params()
285 out:  in amdgpu_atif_get_notification_params()
287 			(n->enabled ? "enabled" : "disabled"),  in amdgpu_atif_get_notification_params()
288 			n->command_code);  in amdgpu_atif_get_notification_params()
294  * amdgpu_atif_query_backlight_caps - get min and max backlight input signal
303  * The input signals are in range 0-255
328 		err = -EIO;  in amdgpu_atif_query_backlight_caps()
329 		goto out;  in amdgpu_atif_query_backlight_caps()
332 	size = *(u16 *) info->buffer.pointer;  in amdgpu_atif_query_backlight_caps()
334 		err = -EINVAL;  in amdgpu_atif_query_backlight_caps()
335 		goto out;  in amdgpu_atif_query_backlight_caps()
340 	memcpy(&characteristics, info->buffer.pointer, size);  in amdgpu_atif_query_backlight_caps()
342 	atif->backlight_caps.caps_valid = true;  in amdgpu_atif_query_backlight_caps()
343 	atif->backlight_caps.min_input_signal =  in amdgpu_atif_query_backlight_caps()
345 	atif->backlight_caps.max_input_signal =  in amdgpu_atif_query_backlight_caps()
347 out:  in amdgpu_atif_query_backlight_caps()
353  * amdgpu_atif_get_sbios_requests - get requested sbios event
373 		return -EIO;  in amdgpu_atif_get_sbios_requests()
375 	size = *(u16 *)info->buffer.pointer;  in amdgpu_atif_get_sbios_requests()
377 		count = -EINVAL;  in amdgpu_atif_get_sbios_requests()
378 		goto out;  in amdgpu_atif_get_sbios_requests()
383 	memcpy(req, info->buffer.pointer, size);  in amdgpu_atif_get_sbios_requests()
384 	DRM_DEBUG_DRIVER("SBIOS pending requests: %#x\n", req->pending);  in amdgpu_atif_get_sbios_requests()
386 	count = hweight32(req->pending);  in amdgpu_atif_get_sbios_requests()
388 out:  in amdgpu_atif_get_sbios_requests()
394  * amdgpu_atif_handler - handle ATIF notify requests
412 			event->device_class, event->type);  in amdgpu_atif_handler()
414 	if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)  in amdgpu_atif_handler()
418 	if (!atif->notification_cfg.enabled ||  in amdgpu_atif_handler()
419 	    event->type != atif->notification_cfg.command_code) {  in amdgpu_atif_handler()
421 		if (event->type == ACPI_VIDEO_NOTIFY_PROBE)  in amdgpu_atif_handler()
427 	if (atif->functions.sbios_requests) {  in amdgpu_atif_handler()
440 			if (atif->bd) {  in amdgpu_atif_handler()
448 				backlight_device_set_brightness(atif->bd, req.backlight_level);  in amdgpu_atif_handler()
454 			if (adev->flags & AMD_IS_PX) {  in amdgpu_atif_handler()
455 				pm_runtime_get_sync(adev_to_drm(adev)->dev);  in amdgpu_atif_handler()
458 				pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);  in amdgpu_atif_handler()
459 				pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);  in amdgpu_atif_handler()
476  * amdgpu_atcs_call - call an ATCS method
502 		atcs_arg_elements[1].buffer.length = params->length;  in amdgpu_atcs_call()
503 		atcs_arg_elements[1].buffer.pointer = params->pointer;  in amdgpu_atcs_call()
510 	status = acpi_evaluate_object(atcs->handle, NULL, &atcs_arg, &buffer);  in amdgpu_atcs_call()
524  * amdgpu_atcs_parse_functions - parse supported functions
526  * @f: supported functions struct
527  * @mask: supported functions mask from ATCS
529  * Use the supported functions mask from ATCS function
530  * ATCS_FUNCTION_VERIFY_INTERFACE to determine what functions
535 	f->get_ext_state = mask & ATCS_GET_EXTERNAL_STATE_SUPPORTED;  in amdgpu_atcs_parse_functions()
536 	f->pcie_perf_req = mask & ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED;  in amdgpu_atcs_parse_functions()
537 	f->pcie_dev_rdy = mask & ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED;  in amdgpu_atcs_parse_functions()
538 	f->pcie_bus_width = mask & ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED;  in amdgpu_atcs_parse_functions()
539 	f->power_shift_control = mask & ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED;  in amdgpu_atcs_parse_functions()
543  * amdgpu_atcs_verify_interface - verify ATCS
561 		return -EIO;  in amdgpu_atcs_verify_interface()
565 	size = *(u16 *) info->buffer.pointer;  in amdgpu_atcs_verify_interface()
568 		err = -EINVAL;  in amdgpu_atcs_verify_interface()
569 		goto out;  in amdgpu_atcs_verify_interface()
573 	memcpy(&output, info->buffer.pointer, size);  in amdgpu_atcs_verify_interface()
578 	amdgpu_atcs_parse_functions(&atcs->functions, output.function_bits);  in amdgpu_atcs_verify_interface()
580 out:  in amdgpu_atcs_verify_interface()
598 	if (atcs->functions.pcie_perf_req && atcs->functions.pcie_dev_rdy)  in amdgpu_acpi_is_pcie_performance_request_supported()
613 	return amdgpu_acpi_priv.atcs.functions.power_shift_control;  in amdgpu_acpi_is_power_shift_control_supported()
630 	if (!atcs->functions.pcie_dev_rdy)  in amdgpu_acpi_pcie_notify_device_ready()
631 		return -EINVAL;  in amdgpu_acpi_pcie_notify_device_ready()
635 		return -EIO;  in amdgpu_acpi_pcie_notify_device_ready()
665 		return -EINVAL;  in amdgpu_acpi_pcie_performance_request()
667 	if (!atcs->functions.pcie_perf_req)  in amdgpu_acpi_pcie_performance_request()
668 		return -EINVAL;  in amdgpu_acpi_pcie_performance_request()
671 	/* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */  in amdgpu_acpi_pcie_performance_request()
672 	atcs_input.client_id = adev->pdev->devfn | (adev->pdev->bus->number << 8);  in amdgpu_acpi_pcie_performance_request()
683 	while (retry--) {  in amdgpu_acpi_pcie_performance_request()
686 			return -EIO;  in amdgpu_acpi_pcie_performance_request()
690 		size = *(u16 *) info->buffer.pointer;  in amdgpu_acpi_pcie_performance_request()
694 			return -EINVAL;  in amdgpu_acpi_pcie_performance_request()
698 		memcpy(&atcs_output, info->buffer.pointer, size);  in amdgpu_acpi_pcie_performance_request()
705 			return -EINVAL;  in amdgpu_acpi_pcie_performance_request()
738 		return -EINVAL;  in amdgpu_acpi_power_shift_control()
741 	/* dGPU id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */  in amdgpu_acpi_power_shift_control()
742 	atcs_input.dgpu_id = adev->pdev->devfn | (adev->pdev->bus->number << 8);  in amdgpu_acpi_power_shift_control()
752 		return -EIO;  in amdgpu_acpi_power_shift_control()
759  * amdgpu_acpi_smart_shift_update - update dGPU device state to SBIOS
801 		return -EINVAL;  in amdgpu_acpi_smart_shift_update()
808  * amdgpu_acpi_event - handle notify events
814  * Calls relevant amdgpu functions in response to various
825 	if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0) {  in amdgpu_acpi_event()
840  * amdgpu_acpi_init - init driver acpi support
853 	if (atif->notifications.brightness_change) {  in amdgpu_acpi_init()
856 			struct amdgpu_display_manager *dm = &adev->dm;  in amdgpu_acpi_init()
857 			if (dm->backlight_dev[0])  in amdgpu_acpi_init()
858 				atif->bd = dm->backlight_dev[0];  in amdgpu_acpi_init()
864 			list_for_each_entry(tmp, &adev_to_drm(adev)->mode_config.encoder_list,  in amdgpu_acpi_init()
868 				if ((enc->devices & (ATOM_DEVICE_LCD_SUPPORT)) &&  in amdgpu_acpi_init()
869 				    enc->enc_priv) {  in amdgpu_acpi_init()
870 					struct amdgpu_encoder_atom_dig *dig = enc->enc_priv;  in amdgpu_acpi_init()
871 					if (dig->bl_dev) {  in amdgpu_acpi_init()
872 						atif->bd = dig->bl_dev;  in amdgpu_acpi_init()
880 	adev->acpi_nb.notifier_call = amdgpu_acpi_event;  in amdgpu_acpi_init()
881 	register_acpi_notifier(&adev->acpi_nb);  in amdgpu_acpi_init()
890 	caps->caps_valid = atif->backlight_caps.caps_valid;  in amdgpu_acpi_get_backlight_caps()
891 	caps->min_input_signal = atif->backlight_caps.min_input_signal;  in amdgpu_acpi_get_backlight_caps()
892 	caps->max_input_signal = atif->backlight_caps.max_input_signal;  in amdgpu_acpi_get_backlight_caps()
896  * amdgpu_acpi_fini - tear down driver acpi support
904 	unregister_acpi_notifier(&adev->acpi_nb);  in amdgpu_acpi_fini()
908  * amdgpu_atif_pci_probe_handle - look up the ATIF handle
923 	dhandle = ACPI_HANDLE(&pdev->dev);  in amdgpu_atif_pci_probe_handle()
943  * amdgpu_atcs_pci_probe_handle - look up the ATCS handle
958 	dhandle = ACPI_HANDLE(&pdev->dev);  in amdgpu_atcs_pci_probe_handle()
978  * amdgpu_acpi_detect - detect ACPI ATIF/ATCS methods
991 		if (!atif->handle)  in amdgpu_acpi_detect()
993 		if (!atcs->handle)  in amdgpu_acpi_detect()
998 		if (!atif->handle)  in amdgpu_acpi_detect()
1000 		if (!atcs->handle)  in amdgpu_acpi_detect()
1004 	if (atif->functions.sbios_requests && !atif->functions.system_params) {  in amdgpu_acpi_detect()
1009 		atif->functions.system_params = true;  in amdgpu_acpi_detect()
1012 	if (atif->functions.system_params) {  in amdgpu_acpi_detect()
1018 			atif->notification_cfg.enabled = false;  in amdgpu_acpi_detect()
1022 	if (atif->functions.query_backlight_transfer_characteristics) {  in amdgpu_acpi_detect()
1027 			atif->backlight_caps.caps_valid = false;  in amdgpu_acpi_detect()
1030 		atif->backlight_caps.caps_valid = false;  in amdgpu_acpi_detect()
1045 		if (adev->flags & AMD_IS_APU)  in amdgpu_acpi_is_s0ix_active()