24  * intel_dp_tunnel_disconnect - Disconnect a DP tunnel from a port
25  * @intel_dp: DP port object the tunnel is connected to
27  * Disconnect a DP tunnel from @intel_dp, destroying any related state. This
32 	drm_dp_tunnel_destroy(intel_dp->tunnel);  in intel_dp_tunnel_disconnect()
33 	intel_dp->tunnel = NULL;  in intel_dp_tunnel_disconnect()
37  * intel_dp_tunnel_destroy - Destroy a DP tunnel
38  * @intel_dp: DP port object the tunnel is connected to
40  * Destroy a DP tunnel connected to @intel_dp, after disabling the BW
41  * allocation mode on the tunnel. This should be called while destroying the
47 		drm_dp_tunnel_disable_bw_alloc(intel_dp->tunnel);  in intel_dp_tunnel_destroy()
82 	ret = drm_dp_tunnel_update_state(intel_dp->tunnel);  in update_tunnel_state()
86 			    drm_dp_tunnel_name(intel_dp->tunnel),  in update_tunnel_state()
94 	    !drm_dp_tunnel_bw_alloc_is_enabled(intel_dp->tunnel))  in update_tunnel_state()
108 		    drm_dp_tunnel_name(intel_dp->tunnel),  in update_tunnel_state()
116  * Allocate the BW for a tunnel on a DP connector/port if the connector/port
117  * was already active when detecting the tunnel. The allocated BW must be
139 			    drm_dp_tunnel_name(intel_dp->tunnel),  in allocate_initial_tunnel_bw_for_pipes()
146 	err = drm_dp_tunnel_alloc_bw(intel_dp->tunnel, tunnel_bw);  in allocate_initial_tunnel_bw_for_pipes()
150 			    drm_dp_tunnel_name(intel_dp->tunnel),  in allocate_initial_tunnel_bw_for_pipes()
177 	struct drm_dp_tunnel *tunnel;  in detect_new_tunnel()  local
180 	tunnel = drm_dp_tunnel_detect(display->dp_tunnel_mgr,  in detect_new_tunnel()
182 	if (IS_ERR(tunnel))  in detect_new_tunnel()
183 		return PTR_ERR(tunnel);  in detect_new_tunnel()
185 	intel_dp->tunnel = tunnel;  in detect_new_tunnel()
187 	ret = drm_dp_tunnel_enable_bw_alloc(intel_dp->tunnel);  in detect_new_tunnel()
194 			    drm_dp_tunnel_name(intel_dp->tunnel),  in detect_new_tunnel()
198 		/* Keep the tunnel with BWA disabled */  in detect_new_tunnel()
210  * intel_dp_tunnel_detect - Detect a DP tunnel on a port
214  * Detect a DP tunnel on the @intel_dp port, enabling the BW allocation mode
219  * If @intel_dp has already a tunnel detected on it, update the tunnel's state
221  * tunnel. If the tunnel's state change requires this - for instance the
222  * tunnel's group ID has changed - the tunnel will be dropped and recreated.
224  * Return 0 in case of success - after any tunnel detected and added to
225  * @intel_dp - 1 in case the BW on an already existing tunnel has changed in a
235 	if (intel_dp->tunnel) {  in intel_dp_tunnel_detect()
240 		/* Try to recreate the tunnel after an update error. */  in intel_dp_tunnel_detect()
248  * intel_dp_tunnel_bw_alloc_is_enabled - Query the BW allocation support on a tunnel
251  * Query whether a DP tunnel is connected on @intel_dp and the tunnel supports
258 	return drm_dp_tunnel_bw_alloc_is_enabled(intel_dp->tunnel);  in intel_dp_tunnel_bw_alloc_is_enabled()
262  * intel_dp_tunnel_suspend - Suspend a DP tunnel connected on a port
265  * Suspend a DP tunnel on @intel_dp with BW allocation mode enabled on it.
278 		    drm_dp_tunnel_name(intel_dp->tunnel),  in intel_dp_tunnel_suspend()
282 	drm_dp_tunnel_disable_bw_alloc(intel_dp->tunnel);  in intel_dp_tunnel_suspend()
288  * intel_dp_tunnel_resume - Resume a DP tunnel connected on a port
293  * Resume a DP tunnel on @intel_dp with BW allocation mode enabled on it.
313 		    drm_dp_tunnel_name(intel_dp->tunnel),  in intel_dp_tunnel_resume()
328 			drm_dp_tunnel_set_io_error(intel_dp->tunnel);  in intel_dp_tunnel_resume()
333 	err = drm_dp_tunnel_enable_bw_alloc(intel_dp->tunnel);  in intel_dp_tunnel_resume()
353 …"[DPTUN %s][CONNECTOR:%d:%s][ENCODER:%d:%s] Tunnel can't be resumed, will drop and reject it (err …  in intel_dp_tunnel_resume()
354 		    drm_dp_tunnel_name(intel_dp->tunnel),  in intel_dp_tunnel_resume()
366 	return state->inherited_dp_tunnels->ref[crtc->pipe].tunnel;  in get_inherited_tunnel()
371 		     struct drm_dp_tunnel *tunnel,  in add_inherited_tunnel()  argument
379 		drm_WARN_ON(display->drm, old_tunnel != tunnel);  in add_inherited_tunnel()
390 	drm_dp_tunnel_ref_get(tunnel, &state->inherited_dp_tunnels->ref[crtc->pipe]);  in add_inherited_tunnel()
407 	 * If a BWA tunnel gets detected only after the corresponding  in check_inherited_tunnel_state()
408 	 * connector got enabled already without a BWA tunnel, or a different  in check_inherited_tunnel_state()
409 	 * BWA tunnel (which was removed meanwhile) the old CRTC state won't  in check_inherited_tunnel_state()
410 	 * contain the state of the current tunnel. This tunnel still has a  in check_inherited_tunnel_state()
424 	    old_crtc_state->dp_tunnel_ref.tunnel == intel_dp->tunnel)  in check_inherited_tunnel_state()
428 …   "[DPTUN %s][CONNECTOR:%d:%s][ENCODER:%d:%s][CRTC:%d:%s] Adding state for inherited tunnel %p\n",  in check_inherited_tunnel_state()
429 		    drm_dp_tunnel_name(intel_dp->tunnel),  in check_inherited_tunnel_state()
433 		    intel_dp->tunnel);  in check_inherited_tunnel_state()
435 	return add_inherited_tunnel(state, intel_dp->tunnel, old_crtc);  in check_inherited_tunnel_state()
439  * intel_dp_tunnel_atomic_cleanup_inherited_state - Free any inherited DP tunnel state
442  * Free the inherited DP tunnel state in @state.
453 		if (state->inherited_dp_tunnels->ref[pipe].tunnel)  in intel_dp_tunnel_atomic_cleanup_inherited_state()
461 						  struct drm_dp_tunnel *tunnel)  in intel_dp_tunnel_atomic_add_group_state()  argument
468 							      tunnel, &pipe_mask);  in intel_dp_tunnel_atomic_add_group_state()
478  * intel_dp_tunnel_atomic_add_state_for_crtc - Add CRTC specific DP tunnel state
480  * @crtc: CRTC to add the tunnel state for
482  * Add the DP tunnel state for @crtc if the CRTC (aka DP tunnel stream) is enabled
483  * via a DP tunnel.
493 	struct drm_dp_tunnel *tunnel = new_crtc_state->dp_tunnel_ref.tunnel;  in intel_dp_tunnel_atomic_add_state_for_crtc()  local
495 	if (!tunnel)  in intel_dp_tunnel_atomic_add_state_for_crtc()
498 	tunnel_state = drm_dp_tunnel_atomic_get_state(&state->base, tunnel);  in intel_dp_tunnel_atomic_add_state_for_crtc()
515 	if (!crtc_state->dp_tunnel_ref.tunnel)  in check_group_state()
519 		    "[DPTUN %s][CONNECTOR:%d:%s][ENCODER:%d:%s][CRTC:%d:%s] Adding group state for tunnel %p\n",  in check_group_state()
520 		    drm_dp_tunnel_name(intel_dp->tunnel),  in check_group_state()
524 		    crtc_state->dp_tunnel_ref.tunnel);  in check_group_state()
526 	return intel_dp_tunnel_atomic_add_group_state(state, crtc_state->dp_tunnel_ref.tunnel);  in check_group_state()
530  * intel_dp_tunnel_atomic_check_state - Check a connector's DP tunnel specific state
535  * Check and add the DP tunnel atomic state for @intel_dp/@connector to
536  * @state, if there is a DP tunnel detected on @intel_dp with BW allocation
538  * DP tunnel.
571  * intel_dp_tunnel_atomic_compute_stream_bw - Compute the BW required by a DP tunnel stream
575  * @crtc_state: state of CRTC of the given DP tunnel stream
577  * Compute the required BW of CRTC (aka DP tunnel stream), storing this BW to
578  * the DP tunnel state containing the stream in @state. Before re-calculating a
600 		    drm_dp_tunnel_name(intel_dp->tunnel),  in intel_dp_tunnel_atomic_compute_stream_bw()
607 	ret = drm_dp_tunnel_atomic_set_stream_bw(&state->base, intel_dp->tunnel,  in intel_dp_tunnel_atomic_compute_stream_bw()
612 	drm_dp_tunnel_ref_get(intel_dp->tunnel,  in intel_dp_tunnel_atomic_compute_stream_bw()
619  * intel_dp_tunnel_atomic_clear_stream_bw - Clear any DP tunnel stream BW requirement
621  * @crtc_state: state of CRTC of the given DP tunnel stream
623  * Clear any DP tunnel stream BW requirement set by
631 	if (!crtc_state->dp_tunnel_ref.tunnel)  in intel_dp_tunnel_atomic_clear_stream_bw()
635 					   crtc_state->dp_tunnel_ref.tunnel,  in intel_dp_tunnel_atomic_clear_stream_bw()
641  * intel_dp_tunnel_atomic_check_link - Check the DP tunnel atomic state
670 				       failed_stream_mask, "DP tunnel link BW");  in intel_dp_tunnel_atomic_check_link()
684 		struct drm_dp_tunnel *tunnel;  in atomic_decrease_bw()  local
691 		tunnel = get_inherited_tunnel(state, crtc);  in atomic_decrease_bw()
692 		if (!tunnel)  in atomic_decrease_bw()
693 			tunnel = old_crtc_state->dp_tunnel_ref.tunnel;  in atomic_decrease_bw()
695 		if (!tunnel)  in atomic_decrease_bw()
698 		old_bw = drm_dp_tunnel_get_allocated_bw(tunnel);  in atomic_decrease_bw()
700 		new_tunnel_state = drm_dp_tunnel_atomic_get_new_state(&state->base, tunnel);  in atomic_decrease_bw()
706 		drm_dp_tunnel_alloc_bw(tunnel, new_bw);  in atomic_decrease_bw()
711 			     struct drm_dp_tunnel *tunnel,  in queue_retry_work()  argument
724 		    drm_dp_tunnel_name(tunnel),  in queue_retry_work()
739 		struct drm_dp_tunnel *tunnel = crtc_state->dp_tunnel_ref.tunnel;  in atomic_increase_bw()  local
745 		if (!tunnel)  in atomic_increase_bw()
748 		tunnel_state = drm_dp_tunnel_atomic_get_new_state(&state->base, tunnel);  in atomic_increase_bw()
752 		if (drm_dp_tunnel_alloc_bw(tunnel, bw) != 0)  in atomic_increase_bw()
753 			queue_retry_work(state, tunnel, crtc_state);  in atomic_increase_bw()
770  * intel_dp_tunnel_mgr_init - Initialize the DP tunnel manager
773  * Initialize the DP tunnel manager. The tunnel manager will support the
805  * intel_dp_tunnel_mgr_cleanup - Clean up the DP tunnel manager state
808  * Clean up the DP tunnel manager state.