1/*
2 * Copyright (C) 2008 Maarten Maathuis.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27#include <acpi/button.h>
28
29#include <linux/pm_runtime.h>
30#include <linux/vga_switcheroo.h>
31
32#include <drm/drm_atomic_helper.h>
33#include <drm/drm_edid.h>
34#include <drm/drm_crtc_helper.h>
35#include <drm/drm_probe_helper.h>
36#include <drm/drm_atomic.h>
37
38#include "nouveau_reg.h"
39#include "nouveau_drv.h"
40#include "dispnv04/hw.h"
41#include "dispnv50/disp.h"
42#include "nouveau_acpi.h"
43
44#include "nouveau_display.h"
45#include "nouveau_connector.h"
46#include "nouveau_encoder.h"
47#include "nouveau_crtc.h"
48
49#include <nvif/class.h>
50#include <nvif/cl0046.h>
51#include <nvif/event.h>
52
53struct drm_display_mode *
54nouveau_conn_native_mode(struct drm_connector *connector)
55{
56	const struct drm_connector_helper_funcs *helper = connector->helper_private;
57	struct nouveau_drm *drm = nouveau_drm(connector->dev);
58	struct drm_device *dev = connector->dev;
59	struct drm_display_mode *mode, *largest = NULL;
60	int high_w = 0, high_h = 0, high_v = 0;
61
62	list_for_each_entry(mode, &connector->probed_modes, head) {
63		if (helper->mode_valid(connector, mode) != MODE_OK ||
64		    (mode->flags & DRM_MODE_FLAG_INTERLACE))
65			continue;
66
67		/* Use preferred mode if there is one.. */
68		if (mode->type & DRM_MODE_TYPE_PREFERRED) {
69			NV_DEBUG(drm, "native mode from preferred\n");
70			return drm_mode_duplicate(dev, mode);
71		}
72
73		/* Otherwise, take the resolution with the largest width, then
74		 * height, then vertical refresh
75		 */
76		if (mode->hdisplay < high_w)
77			continue;
78
79		if (mode->hdisplay == high_w && mode->vdisplay < high_h)
80			continue;
81
82		if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
83		    drm_mode_vrefresh(mode) < high_v)
84			continue;
85
86		high_w = mode->hdisplay;
87		high_h = mode->vdisplay;
88		high_v = drm_mode_vrefresh(mode);
89		largest = mode;
90	}
91
92	NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
93		      high_w, high_h, high_v);
94	return largest ? drm_mode_duplicate(dev, largest) : NULL;
95}
96
97int
98nouveau_conn_atomic_get_property(struct drm_connector *connector,
99				 const struct drm_connector_state *state,
100				 struct drm_property *property, u64 *val)
101{
102	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
103	struct nouveau_display *disp = nouveau_display(connector->dev);
104	struct drm_device *dev = connector->dev;
105
106	if (property == dev->mode_config.scaling_mode_property)
107		*val = asyc->scaler.mode;
108	else if (property == disp->underscan_property)
109		*val = asyc->scaler.underscan.mode;
110	else if (property == disp->underscan_hborder_property)
111		*val = asyc->scaler.underscan.hborder;
112	else if (property == disp->underscan_vborder_property)
113		*val = asyc->scaler.underscan.vborder;
114	else if (property == disp->dithering_mode)
115		*val = asyc->dither.mode;
116	else if (property == disp->dithering_depth)
117		*val = asyc->dither.depth;
118	else if (property == disp->vibrant_hue_property)
119		*val = asyc->procamp.vibrant_hue;
120	else if (property == disp->color_vibrance_property)
121		*val = asyc->procamp.color_vibrance;
122	else
123		return -EINVAL;
124
125	return 0;
126}
127
128int
129nouveau_conn_atomic_set_property(struct drm_connector *connector,
130				 struct drm_connector_state *state,
131				 struct drm_property *property, u64 val)
132{
133	struct drm_device *dev = connector->dev;
134	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
135	struct nouveau_display *disp = nouveau_display(dev);
136
137	if (property == dev->mode_config.scaling_mode_property) {
138		switch (val) {
139		case DRM_MODE_SCALE_NONE:
140			/* We allow 'None' for EDID modes, even on a fixed
141			 * panel (some exist with support for lower refresh
142			 * rates, which people might want to use for power-
143			 * saving purposes).
144			 *
145			 * Non-EDID modes will force the use of GPU scaling
146			 * to the native mode regardless of this setting.
147			 */
148			switch (connector->connector_type) {
149			case DRM_MODE_CONNECTOR_LVDS:
150			case DRM_MODE_CONNECTOR_eDP:
151				/* ... except prior to G80, where the code
152				 * doesn't support such things.
153				 */
154				if (disp->disp.object.oclass < NV50_DISP)
155					return -EINVAL;
156				break;
157			default:
158				break;
159			}
160		case DRM_MODE_SCALE_FULLSCREEN:
161		case DRM_MODE_SCALE_CENTER:
162		case DRM_MODE_SCALE_ASPECT:
163			break;
164		default:
165			return -EINVAL;
166		}
167
168		if (asyc->scaler.mode != val) {
169			asyc->scaler.mode = val;
170			asyc->set.scaler = true;
171		}
172	} else
173	if (property == disp->underscan_property) {
174		if (asyc->scaler.underscan.mode != val) {
175			asyc->scaler.underscan.mode = val;
176			asyc->set.scaler = true;
177		}
178	} else
179	if (property == disp->underscan_hborder_property) {
180		if (asyc->scaler.underscan.hborder != val) {
181			asyc->scaler.underscan.hborder = val;
182			asyc->set.scaler = true;
183		}
184	} else
185	if (property == disp->underscan_vborder_property) {
186		if (asyc->scaler.underscan.vborder != val) {
187			asyc->scaler.underscan.vborder = val;
188			asyc->set.scaler = true;
189		}
190	} else
191	if (property == disp->dithering_mode) {
192		if (asyc->dither.mode != val) {
193			asyc->dither.mode = val;
194			asyc->set.dither = true;
195		}
196	} else
197	if (property == disp->dithering_depth) {
198		if (asyc->dither.mode != val) {
199			asyc->dither.depth = val;
200			asyc->set.dither = true;
201		}
202	} else
203	if (property == disp->vibrant_hue_property) {
204		if (asyc->procamp.vibrant_hue != val) {
205			asyc->procamp.vibrant_hue = val;
206			asyc->set.procamp = true;
207		}
208	} else
209	if (property == disp->color_vibrance_property) {
210		if (asyc->procamp.color_vibrance != val) {
211			asyc->procamp.color_vibrance = val;
212			asyc->set.procamp = true;
213		}
214	} else {
215		return -EINVAL;
216	}
217
218	return 0;
219}
220
221void
222nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
223				  struct drm_connector_state *state)
224{
225	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
226	__drm_atomic_helper_connector_destroy_state(&asyc->state);
227	kfree(asyc);
228}
229
230struct drm_connector_state *
231nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
232{
233	struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
234	struct nouveau_conn_atom *asyc;
235	if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
236		return NULL;
237	__drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
238	asyc->dither = armc->dither;
239	asyc->scaler = armc->scaler;
240	asyc->procamp = armc->procamp;
241	asyc->set.mask = 0;
242	return &asyc->state;
243}
244
245void
246nouveau_conn_reset(struct drm_connector *connector)
247{
248	struct nouveau_connector *nv_connector = nouveau_connector(connector);
249	struct nouveau_conn_atom *asyc;
250
251	if (drm_drv_uses_atomic_modeset(connector->dev)) {
252		if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
253			return;
254
255		if (connector->state)
256			nouveau_conn_atomic_destroy_state(connector,
257							  connector->state);
258
259		__drm_atomic_helper_connector_reset(connector, &asyc->state);
260	} else {
261		asyc = &nv_connector->properties_state;
262	}
263
264	asyc->dither.mode = DITHERING_MODE_AUTO;
265	asyc->dither.depth = DITHERING_DEPTH_AUTO;
266	asyc->scaler.mode = DRM_MODE_SCALE_NONE;
267	asyc->scaler.underscan.mode = UNDERSCAN_OFF;
268	asyc->procamp.color_vibrance = 150;
269	asyc->procamp.vibrant_hue = 90;
270
271	if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
272		switch (connector->connector_type) {
273		case DRM_MODE_CONNECTOR_LVDS:
274			/* See note in nouveau_conn_atomic_set_property(). */
275			asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
276			break;
277		default:
278			break;
279		}
280	}
281}
282
283void
284nouveau_conn_attach_properties(struct drm_connector *connector)
285{
286	struct drm_device *dev = connector->dev;
287	struct nouveau_display *disp = nouveau_display(dev);
288	struct nouveau_connector *nv_connector = nouveau_connector(connector);
289	struct nouveau_conn_atom *armc;
290
291	if (drm_drv_uses_atomic_modeset(connector->dev))
292		armc = nouveau_conn_atom(connector->state);
293	else
294		armc = &nv_connector->properties_state;
295
296	/* Init DVI-I specific properties. */
297	if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
298		drm_object_attach_property(&connector->base, dev->mode_config.
299					   dvi_i_subconnector_property, 0);
300
301	/* Add overscan compensation options to digital outputs. */
302	if (disp->underscan_property &&
303	    (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
304	     connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
305	     connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
306	     connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
307		drm_object_attach_property(&connector->base,
308					   disp->underscan_property,
309					   UNDERSCAN_OFF);
310		drm_object_attach_property(&connector->base,
311					   disp->underscan_hborder_property, 0);
312		drm_object_attach_property(&connector->base,
313					   disp->underscan_vborder_property, 0);
314	}
315
316	/* Add hue and saturation options. */
317	if (disp->vibrant_hue_property)
318		drm_object_attach_property(&connector->base,
319					   disp->vibrant_hue_property,
320					   armc->procamp.vibrant_hue);
321	if (disp->color_vibrance_property)
322		drm_object_attach_property(&connector->base,
323					   disp->color_vibrance_property,
324					   armc->procamp.color_vibrance);
325
326	/* Scaling mode property. */
327	switch (connector->connector_type) {
328	case DRM_MODE_CONNECTOR_TV:
329		break;
330	case DRM_MODE_CONNECTOR_VGA:
331		if (disp->disp.object.oclass < NV50_DISP)
332			break; /* Can only scale on DFPs. */
333		fallthrough;
334	default:
335		drm_object_attach_property(&connector->base, dev->mode_config.
336					   scaling_mode_property,
337					   armc->scaler.mode);
338		break;
339	}
340
341	/* Dithering properties. */
342	switch (connector->connector_type) {
343	case DRM_MODE_CONNECTOR_TV:
344	case DRM_MODE_CONNECTOR_VGA:
345		break;
346	default:
347		if (disp->dithering_mode) {
348			drm_object_attach_property(&connector->base,
349						   disp->dithering_mode,
350						   armc->dither.mode);
351		}
352		if (disp->dithering_depth) {
353			drm_object_attach_property(&connector->base,
354						   disp->dithering_depth,
355						   armc->dither.depth);
356		}
357		break;
358	}
359}
360
361MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
362int nouveau_tv_disable = 0;
363module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
364
365MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
366int nouveau_ignorelid = 0;
367module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
368
369MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
370int nouveau_duallink = 1;
371module_param_named(duallink, nouveau_duallink, int, 0400);
372
373MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
374int nouveau_hdmimhz = 0;
375module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
376
377struct nouveau_encoder *
378find_encoder(struct drm_connector *connector, int type)
379{
380	struct nouveau_encoder *nv_encoder;
381	struct drm_encoder *enc;
382
383	drm_connector_for_each_possible_encoder(connector, enc) {
384		nv_encoder = nouveau_encoder(enc);
385
386		if (type == DCB_OUTPUT_ANY ||
387		    (nv_encoder->dcb && nv_encoder->dcb->type == type))
388			return nv_encoder;
389	}
390
391	return NULL;
392}
393
394static void
395nouveau_connector_destroy(struct drm_connector *connector)
396{
397	struct nouveau_connector *nv_connector = nouveau_connector(connector);
398	nvif_notify_dtor(&nv_connector->hpd);
399	kfree(nv_connector->edid);
400	drm_connector_unregister(connector);
401	drm_connector_cleanup(connector);
402	if (nv_connector->aux.transfer) {
403		drm_dp_cec_unregister_connector(&nv_connector->aux);
404		drm_dp_aux_unregister(&nv_connector->aux);
405		kfree(nv_connector->aux.name);
406	}
407	kfree(connector);
408}
409
410static struct nouveau_encoder *
411nouveau_connector_ddc_detect(struct drm_connector *connector)
412{
413	struct drm_device *dev = connector->dev;
414	struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
415	struct drm_encoder *encoder;
416	int ret;
417	bool switcheroo_ddc = false;
418
419	drm_connector_for_each_possible_encoder(connector, encoder) {
420		nv_encoder = nouveau_encoder(encoder);
421
422		switch (nv_encoder->dcb->type) {
423		case DCB_OUTPUT_DP:
424			ret = nouveau_dp_detect(nouveau_connector(connector),
425						nv_encoder);
426			if (ret == NOUVEAU_DP_MST)
427				return NULL;
428			else if (ret == NOUVEAU_DP_SST)
429				found = nv_encoder;
430
431			break;
432		case DCB_OUTPUT_LVDS:
433			switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
434					    VGA_SWITCHEROO_CAN_SWITCH_DDC);
435			fallthrough;
436		default:
437			if (!nv_encoder->i2c)
438				break;
439
440			if (switcheroo_ddc)
441				vga_switcheroo_lock_ddc(dev->pdev);
442			if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
443				found = nv_encoder;
444			if (switcheroo_ddc)
445				vga_switcheroo_unlock_ddc(dev->pdev);
446
447			break;
448		}
449		if (found)
450			break;
451	}
452
453	return found;
454}
455
456static struct nouveau_encoder *
457nouveau_connector_of_detect(struct drm_connector *connector)
458{
459#ifdef __powerpc__
460	struct drm_device *dev = connector->dev;
461	struct nouveau_connector *nv_connector = nouveau_connector(connector);
462	struct nouveau_encoder *nv_encoder;
463	struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
464
465	if (!dn ||
466	    !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
467	      (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
468		return NULL;
469
470	for_each_child_of_node(dn, cn) {
471		const char *name = of_get_property(cn, "name", NULL);
472		const void *edid = of_get_property(cn, "EDID", NULL);
473		int idx = name ? name[strlen(name) - 1] - 'A' : 0;
474
475		if (nv_encoder->dcb->i2c_index == idx && edid) {
476			nv_connector->edid =
477				kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
478			of_node_put(cn);
479			return nv_encoder;
480		}
481	}
482#endif
483	return NULL;
484}
485
486static void
487nouveau_connector_set_encoder(struct drm_connector *connector,
488			      struct nouveau_encoder *nv_encoder)
489{
490	struct nouveau_connector *nv_connector = nouveau_connector(connector);
491	struct nouveau_drm *drm = nouveau_drm(connector->dev);
492	struct drm_device *dev = connector->dev;
493
494	if (nv_connector->detected_encoder == nv_encoder)
495		return;
496	nv_connector->detected_encoder = nv_encoder;
497
498	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
499		if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
500			connector->interlace_allowed =
501				nv_encoder->caps.dp_interlace;
502		else
503			connector->interlace_allowed =
504				drm->client.device.info.family < NV_DEVICE_INFO_V0_VOLTA;
505		connector->doublescan_allowed = true;
506	} else
507	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
508	    nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
509		connector->doublescan_allowed = false;
510		connector->interlace_allowed = false;
511	} else {
512		connector->doublescan_allowed = true;
513		if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
514		    (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
515		     (dev->pdev->device & 0x0ff0) != 0x0100 &&
516		     (dev->pdev->device & 0x0ff0) != 0x0150))
517			/* HW is broken */
518			connector->interlace_allowed = false;
519		else
520			connector->interlace_allowed = true;
521	}
522
523	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
524		drm_object_property_set_value(&connector->base,
525			dev->mode_config.dvi_i_subconnector_property,
526			nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
527			DRM_MODE_SUBCONNECTOR_DVID :
528			DRM_MODE_SUBCONNECTOR_DVIA);
529	}
530}
531
532static void
533nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
534			   struct edid *edid)
535{
536	if (nv_connector->edid != edid) {
537		struct edid *old_edid = nv_connector->edid;
538
539		drm_connector_update_edid_property(&nv_connector->base, edid);
540		kfree(old_edid);
541		nv_connector->edid = edid;
542	}
543}
544
545static enum drm_connector_status
546nouveau_connector_detect(struct drm_connector *connector, bool force)
547{
548	struct drm_device *dev = connector->dev;
549	struct nouveau_drm *drm = nouveau_drm(dev);
550	struct nouveau_connector *nv_connector = nouveau_connector(connector);
551	struct nouveau_encoder *nv_encoder = NULL;
552	struct nouveau_encoder *nv_partner;
553	struct i2c_adapter *i2c;
554	int type;
555	int ret;
556	enum drm_connector_status conn_status = connector_status_disconnected;
557
558	/* Outputs are only polled while runtime active, so resuming the
559	 * device here is unnecessary (and would deadlock upon runtime suspend
560	 * because it waits for polling to finish). We do however, want to
561	 * prevent the autosuspend timer from elapsing during this operation
562	 * if possible.
563	 */
564	if (drm_kms_helper_is_poll_worker()) {
565		pm_runtime_get_noresume(dev->dev);
566	} else {
567		ret = pm_runtime_get_sync(dev->dev);
568		if (ret < 0 && ret != -EACCES) {
569			pm_runtime_put_autosuspend(dev->dev);
570			nouveau_connector_set_edid(nv_connector, NULL);
571			return conn_status;
572		}
573	}
574
575	nv_encoder = nouveau_connector_ddc_detect(connector);
576	if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
577		struct edid *new_edid;
578
579		if ((vga_switcheroo_handler_flags() &
580		     VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
581		    nv_connector->type == DCB_CONNECTOR_LVDS)
582			new_edid = drm_get_edid_switcheroo(connector, i2c);
583		else
584			new_edid = drm_get_edid(connector, i2c);
585
586		nouveau_connector_set_edid(nv_connector, new_edid);
587		if (!nv_connector->edid) {
588			NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
589				 connector->name);
590			goto detect_analog;
591		}
592
593		/* Override encoder type for DVI-I based on whether EDID
594		 * says the display is digital or analog, both use the
595		 * same i2c channel so the value returned from ddc_detect
596		 * isn't necessarily correct.
597		 */
598		nv_partner = NULL;
599		if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
600			nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
601		if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
602			nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
603
604		if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
605				    nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
606				   (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
607				    nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
608			if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
609				type = DCB_OUTPUT_TMDS;
610			else
611				type = DCB_OUTPUT_ANALOG;
612
613			nv_encoder = find_encoder(connector, type);
614		}
615
616		nouveau_connector_set_encoder(connector, nv_encoder);
617		conn_status = connector_status_connected;
618		drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
619		goto out;
620	} else {
621		nouveau_connector_set_edid(nv_connector, NULL);
622	}
623
624	nv_encoder = nouveau_connector_of_detect(connector);
625	if (nv_encoder) {
626		nouveau_connector_set_encoder(connector, nv_encoder);
627		conn_status = connector_status_connected;
628		goto out;
629	}
630
631detect_analog:
632	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
633	if (!nv_encoder && !nouveau_tv_disable)
634		nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
635	if (nv_encoder && force) {
636		struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
637		const struct drm_encoder_helper_funcs *helper =
638						encoder->helper_private;
639
640		if (helper->detect(encoder, connector) ==
641						connector_status_connected) {
642			nouveau_connector_set_encoder(connector, nv_encoder);
643			conn_status = connector_status_connected;
644			goto out;
645		}
646	}
647
648 out:
649	if (!nv_connector->edid)
650		drm_dp_cec_unset_edid(&nv_connector->aux);
651
652	pm_runtime_mark_last_busy(dev->dev);
653	pm_runtime_put_autosuspend(dev->dev);
654
655	return conn_status;
656}
657
658static enum drm_connector_status
659nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
660{
661	struct drm_device *dev = connector->dev;
662	struct nouveau_drm *drm = nouveau_drm(dev);
663	struct nouveau_connector *nv_connector = nouveau_connector(connector);
664	struct nouveau_encoder *nv_encoder = NULL;
665	struct edid *edid = NULL;
666	enum drm_connector_status status = connector_status_disconnected;
667
668	nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
669	if (!nv_encoder)
670		goto out;
671
672	/* Try retrieving EDID via DDC */
673	if (!drm->vbios.fp_no_ddc) {
674		status = nouveau_connector_detect(connector, force);
675		if (status == connector_status_connected) {
676			edid = nv_connector->edid;
677			goto out;
678		}
679	}
680
681	/* On some laptops (Sony, i'm looking at you) there appears to
682	 * be no direct way of accessing the panel's EDID.  The only
683	 * option available to us appears to be to ask ACPI for help..
684	 *
685	 * It's important this check's before trying straps, one of the
686	 * said manufacturer's laptops are configured in such a way
687	 * the nouveau decides an entry in the VBIOS FP mode table is
688	 * valid - it's not (rh#613284)
689	 */
690	if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
691		edid = nouveau_acpi_edid(dev, connector);
692		if (edid) {
693			status = connector_status_connected;
694			goto out;
695		}
696	}
697
698	/* If no EDID found above, and the VBIOS indicates a hardcoded
699	 * modeline is avalilable for the panel, set it as the panel's
700	 * native mode and exit.
701	 */
702	if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
703	    nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
704		status = connector_status_connected;
705		goto out;
706	}
707
708	/* Still nothing, some VBIOS images have a hardcoded EDID block
709	 * stored for the panel stored in them.
710	 */
711	if (!drm->vbios.fp_no_ddc) {
712		edid = (struct edid *)nouveau_bios_embedded_edid(dev);
713		if (edid) {
714			edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
715			if (edid)
716				status = connector_status_connected;
717		}
718	}
719
720out:
721#if defined(CONFIG_ACPI_BUTTON) || \
722	(defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
723	if (status == connector_status_connected &&
724	    !nouveau_ignorelid && !acpi_lid_open())
725		status = connector_status_unknown;
726#endif
727
728	nouveau_connector_set_edid(nv_connector, edid);
729	if (nv_encoder)
730		nouveau_connector_set_encoder(connector, nv_encoder);
731	return status;
732}
733
734static void
735nouveau_connector_force(struct drm_connector *connector)
736{
737	struct nouveau_drm *drm = nouveau_drm(connector->dev);
738	struct nouveau_connector *nv_connector = nouveau_connector(connector);
739	struct nouveau_encoder *nv_encoder;
740	int type;
741
742	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
743		if (connector->force == DRM_FORCE_ON_DIGITAL)
744			type = DCB_OUTPUT_TMDS;
745		else
746			type = DCB_OUTPUT_ANALOG;
747	} else
748		type = DCB_OUTPUT_ANY;
749
750	nv_encoder = find_encoder(connector, type);
751	if (!nv_encoder) {
752		NV_ERROR(drm, "can't find encoder to force %s on!\n",
753			 connector->name);
754		connector->status = connector_status_disconnected;
755		return;
756	}
757
758	nouveau_connector_set_encoder(connector, nv_encoder);
759}
760
761static int
762nouveau_connector_set_property(struct drm_connector *connector,
763			       struct drm_property *property, uint64_t value)
764{
765	struct nouveau_connector *nv_connector = nouveau_connector(connector);
766	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
767	struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
768	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
769	int ret;
770
771	ret = connector->funcs->atomic_set_property(&nv_connector->base,
772						    &asyc->state,
773						    property, value);
774	if (ret) {
775		if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
776			return get_slave_funcs(encoder)->set_property(
777				encoder, connector, property, value);
778		return ret;
779	}
780
781	nv_connector->scaling_mode = asyc->scaler.mode;
782	nv_connector->dithering_mode = asyc->dither.mode;
783
784	if (connector->encoder && connector->encoder->crtc) {
785		ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
786					      &connector->encoder->crtc->mode,
787					       connector->encoder->crtc->x,
788					       connector->encoder->crtc->y,
789					       NULL);
790		if (!ret)
791			return -EINVAL;
792	}
793
794	return 0;
795}
796
797struct moderec {
798	int hdisplay;
799	int vdisplay;
800};
801
802static struct moderec scaler_modes[] = {
803	{ 1920, 1200 },
804	{ 1920, 1080 },
805	{ 1680, 1050 },
806	{ 1600, 1200 },
807	{ 1400, 1050 },
808	{ 1280, 1024 },
809	{ 1280, 960 },
810	{ 1152, 864 },
811	{ 1024, 768 },
812	{ 800, 600 },
813	{ 720, 400 },
814	{ 640, 480 },
815	{ 640, 400 },
816	{ 640, 350 },
817	{}
818};
819
820static int
821nouveau_connector_scaler_modes_add(struct drm_connector *connector)
822{
823	struct nouveau_connector *nv_connector = nouveau_connector(connector);
824	struct drm_display_mode *native = nv_connector->native_mode, *m;
825	struct drm_device *dev = connector->dev;
826	struct moderec *mode = &scaler_modes[0];
827	int modes = 0;
828
829	if (!native)
830		return 0;
831
832	while (mode->hdisplay) {
833		if (mode->hdisplay <= native->hdisplay &&
834		    mode->vdisplay <= native->vdisplay &&
835		    (mode->hdisplay != native->hdisplay ||
836		     mode->vdisplay != native->vdisplay)) {
837			m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
838					 drm_mode_vrefresh(native), false,
839					 false, false);
840			if (!m)
841				continue;
842
843			drm_mode_probed_add(connector, m);
844			modes++;
845		}
846
847		mode++;
848	}
849
850	return modes;
851}
852
853static void
854nouveau_connector_detect_depth(struct drm_connector *connector)
855{
856	struct nouveau_drm *drm = nouveau_drm(connector->dev);
857	struct nouveau_connector *nv_connector = nouveau_connector(connector);
858	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
859	struct nvbios *bios = &drm->vbios;
860	struct drm_display_mode *mode = nv_connector->native_mode;
861	bool duallink;
862
863	/* if the edid is feeling nice enough to provide this info, use it */
864	if (nv_connector->edid && connector->display_info.bpc)
865		return;
866
867	/* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
868	if (nv_connector->type == DCB_CONNECTOR_eDP) {
869		connector->display_info.bpc = 6;
870		return;
871	}
872
873	/* we're out of options unless we're LVDS, default to 8bpc */
874	if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
875		connector->display_info.bpc = 8;
876		return;
877	}
878
879	connector->display_info.bpc = 6;
880
881	/* LVDS: panel straps */
882	if (bios->fp_no_ddc) {
883		if (bios->fp.if_is_24bit)
884			connector->display_info.bpc = 8;
885		return;
886	}
887
888	/* LVDS: DDC panel, need to first determine the number of links to
889	 * know which if_is_24bit flag to check...
890	 */
891	if (nv_connector->edid &&
892	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
893		duallink = ((u8 *)nv_connector->edid)[121] == 2;
894	else
895		duallink = mode->clock >= bios->fp.duallink_transition_clk;
896
897	if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
898	    ( duallink && (bios->fp.strapless_is_24bit & 2)))
899		connector->display_info.bpc = 8;
900}
901
902static int
903nouveau_connector_late_register(struct drm_connector *connector)
904{
905	int ret;
906
907	ret = nouveau_backlight_init(connector);
908
909	return ret;
910}
911
912static void
913nouveau_connector_early_unregister(struct drm_connector *connector)
914{
915	nouveau_backlight_fini(connector);
916}
917
918static int
919nouveau_connector_get_modes(struct drm_connector *connector)
920{
921	struct drm_device *dev = connector->dev;
922	struct nouveau_drm *drm = nouveau_drm(dev);
923	struct nouveau_connector *nv_connector = nouveau_connector(connector);
924	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
925	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
926	int ret = 0;
927
928	/* destroy the native mode, the attached monitor could have changed.
929	 */
930	if (nv_connector->native_mode) {
931		drm_mode_destroy(dev, nv_connector->native_mode);
932		nv_connector->native_mode = NULL;
933	}
934
935	if (nv_connector->edid)
936		ret = drm_add_edid_modes(connector, nv_connector->edid);
937	else
938	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
939	    (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
940	     drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
941		struct drm_display_mode mode;
942
943		nouveau_bios_fp_mode(dev, &mode);
944		nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
945	}
946
947	/* Determine display colour depth for everything except LVDS now,
948	 * DP requires this before mode_valid() is called.
949	 */
950	if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
951		nouveau_connector_detect_depth(connector);
952
953	/* Find the native mode if this is a digital panel, if we didn't
954	 * find any modes through DDC previously add the native mode to
955	 * the list of modes.
956	 */
957	if (!nv_connector->native_mode)
958		nv_connector->native_mode = nouveau_conn_native_mode(connector);
959	if (ret == 0 && nv_connector->native_mode) {
960		struct drm_display_mode *mode;
961
962		mode = drm_mode_duplicate(dev, nv_connector->native_mode);
963		drm_mode_probed_add(connector, mode);
964		ret = 1;
965	}
966
967	/* Determine LVDS colour depth, must happen after determining
968	 * "native" mode as some VBIOS tables require us to use the
969	 * pixel clock as part of the lookup...
970	 */
971	if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS && nv_connector->native_mode)
972		nouveau_connector_detect_depth(connector);
973
974	if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
975		ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
976
977	if (nv_connector->type == DCB_CONNECTOR_LVDS ||
978	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
979	    nv_connector->type == DCB_CONNECTOR_eDP)
980		ret += nouveau_connector_scaler_modes_add(connector);
981
982	return ret;
983}
984
985static unsigned
986get_tmds_link_bandwidth(struct drm_connector *connector)
987{
988	struct nouveau_connector *nv_connector = nouveau_connector(connector);
989	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
990	struct nouveau_drm *drm = nouveau_drm(connector->dev);
991	struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
992	struct drm_display_info *info = NULL;
993	unsigned duallink_scale =
994		nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
995
996	if (drm_detect_hdmi_monitor(nv_connector->edid)) {
997		info = &nv_connector->base.display_info;
998		duallink_scale = 1;
999	}
1000
1001	if (info) {
1002		if (nouveau_hdmimhz > 0)
1003			return nouveau_hdmimhz * 1000;
1004		/* Note: these limits are conservative, some Fermi's
1005		 * can do 297 MHz. Unclear how this can be determined.
1006		 */
1007		if (drm->client.device.info.chipset >= 0x120) {
1008			const int max_tmds_clock =
1009				info->hdmi.scdc.scrambling.supported ?
1010				594000 : 340000;
1011			return info->max_tmds_clock ?
1012				min(info->max_tmds_clock, max_tmds_clock) :
1013				max_tmds_clock;
1014		}
1015		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1016			return 297000;
1017		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1018			return 225000;
1019	}
1020
1021	if (dcb->location != DCB_LOC_ON_CHIP ||
1022	    drm->client.device.info.chipset >= 0x46)
1023		return 165000 * duallink_scale;
1024	else if (drm->client.device.info.chipset >= 0x40)
1025		return 155000 * duallink_scale;
1026	else if (drm->client.device.info.chipset >= 0x18)
1027		return 135000 * duallink_scale;
1028	else
1029		return 112000 * duallink_scale;
1030}
1031
1032static enum drm_mode_status
1033nouveau_connector_mode_valid(struct drm_connector *connector,
1034			     struct drm_display_mode *mode)
1035{
1036	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1037	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1038	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1039	unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1040
1041	switch (nv_encoder->dcb->type) {
1042	case DCB_OUTPUT_LVDS:
1043		if (nv_connector->native_mode &&
1044		    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1045		     mode->vdisplay > nv_connector->native_mode->vdisplay))
1046			return MODE_PANEL;
1047
1048		min_clock = 0;
1049		max_clock = 400000;
1050		break;
1051	case DCB_OUTPUT_TMDS:
1052		max_clock = get_tmds_link_bandwidth(connector);
1053		break;
1054	case DCB_OUTPUT_ANALOG:
1055		max_clock = nv_encoder->dcb->crtconf.maxfreq;
1056		if (!max_clock)
1057			max_clock = 350000;
1058		break;
1059	case DCB_OUTPUT_TV:
1060		return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1061	case DCB_OUTPUT_DP:
1062		return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1063	default:
1064		BUG();
1065		return MODE_BAD;
1066	}
1067
1068	if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1069		clock *= 2;
1070
1071	if (clock < min_clock)
1072		return MODE_CLOCK_LOW;
1073	if (clock > max_clock)
1074		return MODE_CLOCK_HIGH;
1075
1076	return MODE_OK;
1077}
1078
1079static struct drm_encoder *
1080nouveau_connector_best_encoder(struct drm_connector *connector)
1081{
1082	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1083
1084	if (nv_connector->detected_encoder)
1085		return to_drm_encoder(nv_connector->detected_encoder);
1086
1087	return NULL;
1088}
1089
1090static const struct drm_connector_helper_funcs
1091nouveau_connector_helper_funcs = {
1092	.get_modes = nouveau_connector_get_modes,
1093	.mode_valid = nouveau_connector_mode_valid,
1094	.best_encoder = nouveau_connector_best_encoder,
1095};
1096
1097static const struct drm_connector_funcs
1098nouveau_connector_funcs = {
1099	.dpms = drm_helper_connector_dpms,
1100	.reset = nouveau_conn_reset,
1101	.detect = nouveau_connector_detect,
1102	.force = nouveau_connector_force,
1103	.fill_modes = drm_helper_probe_single_connector_modes,
1104	.set_property = nouveau_connector_set_property,
1105	.destroy = nouveau_connector_destroy,
1106	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1107	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1108	.atomic_set_property = nouveau_conn_atomic_set_property,
1109	.atomic_get_property = nouveau_conn_atomic_get_property,
1110	.late_register = nouveau_connector_late_register,
1111	.early_unregister = nouveau_connector_early_unregister,
1112};
1113
1114static const struct drm_connector_funcs
1115nouveau_connector_funcs_lvds = {
1116	.dpms = drm_helper_connector_dpms,
1117	.reset = nouveau_conn_reset,
1118	.detect = nouveau_connector_detect_lvds,
1119	.force = nouveau_connector_force,
1120	.fill_modes = drm_helper_probe_single_connector_modes,
1121	.set_property = nouveau_connector_set_property,
1122	.destroy = nouveau_connector_destroy,
1123	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1124	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1125	.atomic_set_property = nouveau_conn_atomic_set_property,
1126	.atomic_get_property = nouveau_conn_atomic_get_property,
1127	.late_register = nouveau_connector_late_register,
1128	.early_unregister = nouveau_connector_early_unregister,
1129};
1130
1131void
1132nouveau_connector_hpd(struct drm_connector *connector)
1133{
1134	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1135	u32 mask = drm_connector_mask(connector);
1136
1137	mutex_lock(&drm->hpd_lock);
1138	if (!(drm->hpd_pending & mask)) {
1139		drm->hpd_pending |= mask;
1140		schedule_work(&drm->hpd_work);
1141	}
1142	mutex_unlock(&drm->hpd_lock);
1143}
1144
1145static int
1146nouveau_connector_hotplug(struct nvif_notify *notify)
1147{
1148	struct nouveau_connector *nv_connector =
1149		container_of(notify, typeof(*nv_connector), hpd);
1150	struct drm_connector *connector = &nv_connector->base;
1151	struct drm_device *dev = connector->dev;
1152	struct nouveau_drm *drm = nouveau_drm(dev);
1153	const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1154	bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1155
1156	if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1157		nouveau_dp_irq(drm, nv_connector);
1158		return NVIF_NOTIFY_KEEP;
1159	}
1160
1161	NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", connector->name);
1162	nouveau_connector_hpd(connector);
1163
1164	return NVIF_NOTIFY_KEEP;
1165}
1166
1167static ssize_t
1168nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1169{
1170	struct nouveau_connector *nv_connector =
1171		container_of(obj, typeof(*nv_connector), aux);
1172	struct nouveau_encoder *nv_encoder;
1173	struct nvkm_i2c_aux *aux;
1174	u8 size = msg->size;
1175	int ret;
1176
1177	nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1178	if (!nv_encoder || !(aux = nv_encoder->aux))
1179		return -ENODEV;
1180	if (WARN_ON(msg->size > 16))
1181		return -E2BIG;
1182
1183	ret = nvkm_i2c_aux_acquire(aux);
1184	if (ret)
1185		return ret;
1186
1187	ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1188				msg->buffer, &size);
1189	nvkm_i2c_aux_release(aux);
1190	if (ret >= 0) {
1191		msg->reply = ret;
1192		return size;
1193	}
1194
1195	return ret;
1196}
1197
1198static int
1199drm_conntype_from_dcb(enum dcb_connector_type dcb)
1200{
1201	switch (dcb) {
1202	case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1203	case DCB_CONNECTOR_TV_0     :
1204	case DCB_CONNECTOR_TV_1     :
1205	case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1206	case DCB_CONNECTOR_DMS59_0  :
1207	case DCB_CONNECTOR_DMS59_1  :
1208	case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1209	case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1210	case DCB_CONNECTOR_LVDS     :
1211	case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1212	case DCB_CONNECTOR_DMS59_DP0:
1213	case DCB_CONNECTOR_DMS59_DP1:
1214	case DCB_CONNECTOR_DP       :
1215	case DCB_CONNECTOR_mDP      :
1216	case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1217	case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1218	case DCB_CONNECTOR_HDMI_0   :
1219	case DCB_CONNECTOR_HDMI_1   :
1220	case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1221	case DCB_CONNECTOR_WFD	    : return DRM_MODE_CONNECTOR_VIRTUAL;
1222	default:
1223		break;
1224	}
1225
1226	return DRM_MODE_CONNECTOR_Unknown;
1227}
1228
1229struct drm_connector *
1230nouveau_connector_create(struct drm_device *dev,
1231			 const struct dcb_output *dcbe)
1232{
1233	const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1234	struct nouveau_drm *drm = nouveau_drm(dev);
1235	struct nouveau_display *disp = nouveau_display(dev);
1236	struct nouveau_connector *nv_connector = NULL;
1237	struct drm_connector *connector;
1238	struct drm_connector_list_iter conn_iter;
1239	char aux_name[48] = {0};
1240	int index = dcbe->connector;
1241	int type, ret = 0;
1242	bool dummy;
1243
1244	drm_connector_list_iter_begin(dev, &conn_iter);
1245	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1246		nv_connector = nouveau_connector(connector);
1247		if (nv_connector->index == index) {
1248			drm_connector_list_iter_end(&conn_iter);
1249			return connector;
1250		}
1251	}
1252	drm_connector_list_iter_end(&conn_iter);
1253
1254	nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1255	if (!nv_connector)
1256		return ERR_PTR(-ENOMEM);
1257
1258	connector = &nv_connector->base;
1259	nv_connector->index = index;
1260
1261	/* attempt to parse vbios connector type and hotplug gpio */
1262	nv_connector->dcb = olddcb_conn(dev, index);
1263	if (nv_connector->dcb) {
1264		u32 entry = ROM16(nv_connector->dcb[0]);
1265		if (olddcb_conntab(dev)[3] >= 4)
1266			entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1267
1268		nv_connector->type = nv_connector->dcb[0];
1269		if (drm_conntype_from_dcb(nv_connector->type) ==
1270					  DRM_MODE_CONNECTOR_Unknown) {
1271			NV_WARN(drm, "unknown connector type %02x\n",
1272				nv_connector->type);
1273			nv_connector->type = DCB_CONNECTOR_NONE;
1274		}
1275
1276		/* Gigabyte NX85T */
1277		if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1278			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1279				nv_connector->type = DCB_CONNECTOR_DVI_I;
1280		}
1281
1282		/* Gigabyte GV-NX86T512H */
1283		if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1284			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1285				nv_connector->type = DCB_CONNECTOR_DVI_I;
1286		}
1287	} else {
1288		nv_connector->type = DCB_CONNECTOR_NONE;
1289	}
1290
1291	/* no vbios data, or an unknown dcb connector type - attempt to
1292	 * figure out something suitable ourselves
1293	 */
1294	if (nv_connector->type == DCB_CONNECTOR_NONE) {
1295		struct nouveau_drm *drm = nouveau_drm(dev);
1296		struct dcb_table *dcbt = &drm->vbios.dcb;
1297		u32 encoders = 0;
1298		int i;
1299
1300		for (i = 0; i < dcbt->entries; i++) {
1301			if (dcbt->entry[i].connector == nv_connector->index)
1302				encoders |= (1 << dcbt->entry[i].type);
1303		}
1304
1305		if (encoders & (1 << DCB_OUTPUT_DP)) {
1306			if (encoders & (1 << DCB_OUTPUT_TMDS))
1307				nv_connector->type = DCB_CONNECTOR_DP;
1308			else
1309				nv_connector->type = DCB_CONNECTOR_eDP;
1310		} else
1311		if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1312			if (encoders & (1 << DCB_OUTPUT_ANALOG))
1313				nv_connector->type = DCB_CONNECTOR_DVI_I;
1314			else
1315				nv_connector->type = DCB_CONNECTOR_DVI_D;
1316		} else
1317		if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1318			nv_connector->type = DCB_CONNECTOR_VGA;
1319		} else
1320		if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1321			nv_connector->type = DCB_CONNECTOR_LVDS;
1322		} else
1323		if (encoders & (1 << DCB_OUTPUT_TV)) {
1324			nv_connector->type = DCB_CONNECTOR_TV_0;
1325		}
1326	}
1327
1328	switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1329	case DRM_MODE_CONNECTOR_LVDS:
1330		ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1331		if (ret) {
1332			NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1333			kfree(nv_connector);
1334			return ERR_PTR(ret);
1335		}
1336
1337		funcs = &nouveau_connector_funcs_lvds;
1338		break;
1339	case DRM_MODE_CONNECTOR_DisplayPort:
1340	case DRM_MODE_CONNECTOR_eDP:
1341		nv_connector->aux.dev = connector->kdev;
1342		nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1343		snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1344			 dcbe->hasht, dcbe->hashm);
1345		nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1346		ret = drm_dp_aux_register(&nv_connector->aux);
1347		if (ret) {
1348			NV_ERROR(drm, "failed to register aux channel\n");
1349			kfree(nv_connector);
1350			return ERR_PTR(ret);
1351		}
1352		funcs = &nouveau_connector_funcs;
1353		break;
1354	default:
1355		funcs = &nouveau_connector_funcs;
1356		break;
1357	}
1358
1359	/* HDMI 3D support */
1360	if ((disp->disp.object.oclass >= G82_DISP)
1361	    && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1362		|| (type == DRM_MODE_CONNECTOR_eDP)
1363		|| (type == DRM_MODE_CONNECTOR_HDMIA)))
1364		connector->stereo_allowed = true;
1365
1366	/* defaults, will get overridden in detect() */
1367	connector->interlace_allowed = false;
1368	connector->doublescan_allowed = false;
1369
1370	drm_connector_init(dev, connector, funcs, type);
1371	drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1372
1373	connector->funcs->reset(connector);
1374	nouveau_conn_attach_properties(connector);
1375
1376	/* Default scaling mode */
1377	switch (nv_connector->type) {
1378	case DCB_CONNECTOR_LVDS:
1379	case DCB_CONNECTOR_LVDS_SPWG:
1380	case DCB_CONNECTOR_eDP:
1381		/* see note in nouveau_connector_set_property() */
1382		if (disp->disp.object.oclass < NV50_DISP) {
1383			nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1384			break;
1385		}
1386		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1387		break;
1388	default:
1389		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1390		break;
1391	}
1392
1393	/* dithering properties */
1394	switch (nv_connector->type) {
1395	case DCB_CONNECTOR_TV_0:
1396	case DCB_CONNECTOR_TV_1:
1397	case DCB_CONNECTOR_TV_3:
1398	case DCB_CONNECTOR_VGA:
1399		break;
1400	default:
1401		nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1402		break;
1403	}
1404
1405	switch (type) {
1406	case DRM_MODE_CONNECTOR_DisplayPort:
1407	case DRM_MODE_CONNECTOR_eDP:
1408		drm_dp_cec_register_connector(&nv_connector->aux, connector);
1409		break;
1410	}
1411
1412	ret = nvif_notify_ctor(&disp->disp.object, "kmsHotplug",
1413			       nouveau_connector_hotplug,
1414			       true, NV04_DISP_NTFY_CONN,
1415			       &(struct nvif_notify_conn_req_v0) {
1416				.mask = NVIF_NOTIFY_CONN_V0_ANY,
1417				.conn = index,
1418			       },
1419			       sizeof(struct nvif_notify_conn_req_v0),
1420			       sizeof(struct nvif_notify_conn_rep_v0),
1421			       &nv_connector->hpd);
1422	if (ret)
1423		connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1424	else
1425		connector->polled = DRM_CONNECTOR_POLL_HPD;
1426
1427	drm_connector_register(connector);
1428	return connector;
1429}
1430