23  * intel_dp_tunnel_disconnect - Disconnect a DP tunnel from a port
24  * @intel_dp: DP port object the tunnel is connected to
26  * Disconnect a DP tunnel from @intel_dp, destroying any related state. This
31 	drm_dp_tunnel_destroy(intel_dp->tunnel);  in intel_dp_tunnel_disconnect()
32 	intel_dp->tunnel = NULL;  in intel_dp_tunnel_disconnect()
36  * intel_dp_tunnel_destroy - Destroy a DP tunnel
37  * @intel_dp: DP port object the tunnel is connected to
39  * Destroy a DP tunnel connected to @intel_dp, after disabling the BW
40  * allocation mode on the tunnel. This should be called while destroying the
46 		drm_dp_tunnel_disable_bw_alloc(intel_dp->tunnel);  in intel_dp_tunnel_destroy()
81 	ret = drm_dp_tunnel_update_state(intel_dp->tunnel);  in update_tunnel_state()
85 			    drm_dp_tunnel_name(intel_dp->tunnel),  in update_tunnel_state()
93 	    !drm_dp_tunnel_bw_alloc_is_enabled(intel_dp->tunnel))  in update_tunnel_state()
107 		    drm_dp_tunnel_name(intel_dp->tunnel),  in update_tunnel_state()
115  * Allocate the BW for a tunnel on a DP connector/port if the connector/port
116  * was already active when detecting the tunnel. The allocated BW must be
138 			    drm_dp_tunnel_name(intel_dp->tunnel),  in allocate_initial_tunnel_bw_for_pipes()
145 	err = drm_dp_tunnel_alloc_bw(intel_dp->tunnel, tunnel_bw);  in allocate_initial_tunnel_bw_for_pipes()
149 			    drm_dp_tunnel_name(intel_dp->tunnel),  in allocate_initial_tunnel_bw_for_pipes()
176 	struct drm_dp_tunnel *tunnel;  in detect_new_tunnel()  local
179 	tunnel = drm_dp_tunnel_detect(display->dp_tunnel_mgr,  in detect_new_tunnel()
181 	if (IS_ERR(tunnel))  in detect_new_tunnel()
182 		return PTR_ERR(tunnel);  in detect_new_tunnel()
184 	intel_dp->tunnel = tunnel;  in detect_new_tunnel()
186 	ret = drm_dp_tunnel_enable_bw_alloc(intel_dp->tunnel);  in detect_new_tunnel()
193 			    drm_dp_tunnel_name(intel_dp->tunnel),  in detect_new_tunnel()
197 		/* Keep the tunnel with BWA disabled */  in detect_new_tunnel()
209  * intel_dp_tunnel_detect - Detect a DP tunnel on a port
213  * Detect a DP tunnel on the @intel_dp port, enabling the BW allocation mode
218  * If @intel_dp has already a tunnel detected on it, update the tunnel's state
220  * tunnel. If the tunnel's state change requires this - for instance the
221  * tunnel's group ID has changed - the tunnel will be dropped and recreated.
223  * Return 0 in case of success - after any tunnel detected and added to
224  * @intel_dp - 1 in case the BW on an already existing tunnel has changed in a
234 	if (intel_dp->tunnel) {  in intel_dp_tunnel_detect()
239 		/* Try to recreate the tunnel after an update error. */  in intel_dp_tunnel_detect()
247  * intel_dp_tunnel_bw_alloc_is_enabled - Query the BW allocation support on a tunnel
250  * Query whether a DP tunnel is connected on @intel_dp and the tunnel supports
257 	return drm_dp_tunnel_bw_alloc_is_enabled(intel_dp->tunnel);  in intel_dp_tunnel_bw_alloc_is_enabled()
261  * intel_dp_tunnel_suspend - Suspend a DP tunnel connected on a port
264  * Suspend a DP tunnel on @intel_dp with BW allocation mode enabled on it.
277 		    drm_dp_tunnel_name(intel_dp->tunnel),  in intel_dp_tunnel_suspend()
281 	drm_dp_tunnel_disable_bw_alloc(intel_dp->tunnel);  in intel_dp_tunnel_suspend()
287  * intel_dp_tunnel_resume - Resume a DP tunnel connected on a port
292  * Resume a DP tunnel on @intel_dp with BW allocation mode enabled on it.
312 		    drm_dp_tunnel_name(intel_dp->tunnel),  in intel_dp_tunnel_resume()
327 			drm_dp_tunnel_set_io_error(intel_dp->tunnel);  in intel_dp_tunnel_resume()
332 	err = drm_dp_tunnel_enable_bw_alloc(intel_dp->tunnel);  in intel_dp_tunnel_resume()
352 …"[DPTUN %s][CONNECTOR:%d:%s][ENCODER:%d:%s] Tunnel can't be resumed, will drop and reject it (err …  in intel_dp_tunnel_resume()
353 		    drm_dp_tunnel_name(intel_dp->tunnel),  in intel_dp_tunnel_resume()
365 	return state->inherited_dp_tunnels->ref[crtc->pipe].tunnel;  in get_inherited_tunnel()
370 		     struct drm_dp_tunnel *tunnel,  in add_inherited_tunnel()  argument
378 		drm_WARN_ON(display->drm, old_tunnel != tunnel);  in add_inherited_tunnel()
389 	drm_dp_tunnel_ref_get(tunnel, &state->inherited_dp_tunnels->ref[crtc->pipe]);  in add_inherited_tunnel()
406 	 * If a BWA tunnel gets detected only after the corresponding  in check_inherited_tunnel_state()
407 	 * connector got enabled already without a BWA tunnel, or a different  in check_inherited_tunnel_state()
408 	 * BWA tunnel (which was removed meanwhile) the old CRTC state won't  in check_inherited_tunnel_state()
409 	 * contain the state of the current tunnel. This tunnel still has a  in check_inherited_tunnel_state()
423 	    old_crtc_state->dp_tunnel_ref.tunnel == intel_dp->tunnel)  in check_inherited_tunnel_state()
427 …   "[DPTUN %s][CONNECTOR:%d:%s][ENCODER:%d:%s][CRTC:%d:%s] Adding state for inherited tunnel %p\n",  in check_inherited_tunnel_state()
428 		    drm_dp_tunnel_name(intel_dp->tunnel),  in check_inherited_tunnel_state()
432 		    intel_dp->tunnel);  in check_inherited_tunnel_state()
434 	return add_inherited_tunnel(state, intel_dp->tunnel, old_crtc);  in check_inherited_tunnel_state()
438  * intel_dp_tunnel_atomic_cleanup_inherited_state - Free any inherited DP tunnel state
441  * Free the inherited DP tunnel state in @state.
452 		if (state->inherited_dp_tunnels->ref[pipe].tunnel)  in intel_dp_tunnel_atomic_cleanup_inherited_state()
460 						  struct drm_dp_tunnel *tunnel)  in intel_dp_tunnel_atomic_add_group_state()  argument
467 							      tunnel, &pipe_mask);  in intel_dp_tunnel_atomic_add_group_state()
477  * intel_dp_tunnel_atomic_add_state_for_crtc - Add CRTC specific DP tunnel state
479  * @crtc: CRTC to add the tunnel state for
481  * Add the DP tunnel state for @crtc if the CRTC (aka DP tunnel stream) is enabled
482  * via a DP tunnel.
492 	struct drm_dp_tunnel *tunnel = new_crtc_state->dp_tunnel_ref.tunnel;  in intel_dp_tunnel_atomic_add_state_for_crtc()  local
494 	if (!tunnel)  in intel_dp_tunnel_atomic_add_state_for_crtc()
497 	tunnel_state = drm_dp_tunnel_atomic_get_state(&state->base, tunnel);  in intel_dp_tunnel_atomic_add_state_for_crtc()
514 	if (!crtc_state->dp_tunnel_ref.tunnel)  in check_group_state()
518 		    "[DPTUN %s][CONNECTOR:%d:%s][ENCODER:%d:%s][CRTC:%d:%s] Adding group state for tunnel %p\n",  in check_group_state()
519 		    drm_dp_tunnel_name(intel_dp->tunnel),  in check_group_state()
523 		    crtc_state->dp_tunnel_ref.tunnel);  in check_group_state()
525 	return intel_dp_tunnel_atomic_add_group_state(state, crtc_state->dp_tunnel_ref.tunnel);  in check_group_state()
529  * intel_dp_tunnel_atomic_check_state - Check a connector's DP tunnel specific state
534  * Check and add the DP tunnel atomic state for @intel_dp/@connector to
535  * @state, if there is a DP tunnel detected on @intel_dp with BW allocation
537  * DP tunnel.
570  * intel_dp_tunnel_atomic_compute_stream_bw - Compute the BW required by a DP tunnel stream
574  * @crtc_state: state of CRTC of the given DP tunnel stream
576  * Compute the required BW of CRTC (aka DP tunnel stream), storing this BW to
577  * the DP tunnel state containing the stream in @state. Before re-calculating a
599 		    drm_dp_tunnel_name(intel_dp->tunnel),  in intel_dp_tunnel_atomic_compute_stream_bw()
606 	ret = drm_dp_tunnel_atomic_set_stream_bw(&state->base, intel_dp->tunnel,  in intel_dp_tunnel_atomic_compute_stream_bw()
611 	drm_dp_tunnel_ref_get(intel_dp->tunnel,  in intel_dp_tunnel_atomic_compute_stream_bw()
618  * intel_dp_tunnel_atomic_clear_stream_bw - Clear any DP tunnel stream BW requirement
620  * @crtc_state: state of CRTC of the given DP tunnel stream
622  * Clear any DP tunnel stream BW requirement set by
630 	if (!crtc_state->dp_tunnel_ref.tunnel)  in intel_dp_tunnel_atomic_clear_stream_bw()
634 					   crtc_state->dp_tunnel_ref.tunnel,  in intel_dp_tunnel_atomic_clear_stream_bw()
640  * intel_dp_tunnel_atomic_check_link - Check the DP tunnel atomic state
669 				       failed_stream_mask, "DP tunnel link BW");  in intel_dp_tunnel_atomic_check_link()
683 		struct drm_dp_tunnel *tunnel;  in atomic_decrease_bw()  local
690 		tunnel = get_inherited_tunnel(state, crtc);  in atomic_decrease_bw()
691 		if (!tunnel)  in atomic_decrease_bw()
692 			tunnel = old_crtc_state->dp_tunnel_ref.tunnel;  in atomic_decrease_bw()
694 		if (!tunnel)  in atomic_decrease_bw()
697 		old_bw = drm_dp_tunnel_get_allocated_bw(tunnel);  in atomic_decrease_bw()
699 		new_tunnel_state = drm_dp_tunnel_atomic_get_new_state(&state->base, tunnel);  in atomic_decrease_bw()
705 		drm_dp_tunnel_alloc_bw(tunnel, new_bw);  in atomic_decrease_bw()
710 			     struct drm_dp_tunnel *tunnel,  in queue_retry_work()  argument
723 		    drm_dp_tunnel_name(tunnel),  in queue_retry_work()
738 		struct drm_dp_tunnel *tunnel = crtc_state->dp_tunnel_ref.tunnel;  in atomic_increase_bw()  local
744 		if (!tunnel)  in atomic_increase_bw()
747 		tunnel_state = drm_dp_tunnel_atomic_get_new_state(&state->base, tunnel);  in atomic_increase_bw()
751 		if (drm_dp_tunnel_alloc_bw(tunnel, bw) != 0)  in atomic_increase_bw()
752 			queue_retry_work(state, tunnel, crtc_state);  in atomic_increase_bw()
769  * intel_dp_tunnel_mgr_init - Initialize the DP tunnel manager
772  * Initialize the DP tunnel manager. The tunnel manager will support the
804  * intel_dp_tunnel_mgr_cleanup - Clean up the DP tunnel manager state
807  * Clean up the DP tunnel manager state.