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/if0011.h>
51
52struct drm_display_mode *
53nouveau_conn_native_mode(struct drm_connector *connector)
54{
55	const struct drm_connector_helper_funcs *helper = connector->helper_private;
56	struct nouveau_drm *drm = nouveau_drm(connector->dev);
57	struct drm_device *dev = connector->dev;
58	struct drm_display_mode *mode, *largest = NULL;
59	int high_w = 0, high_h = 0, high_v = 0;
60
61	list_for_each_entry(mode, &connector->probed_modes, head) {
62		if (helper->mode_valid(connector, mode) != MODE_OK ||
63		    (mode->flags & DRM_MODE_FLAG_INTERLACE))
64			continue;
65
66		/* Use preferred mode if there is one.. */
67		if (mode->type & DRM_MODE_TYPE_PREFERRED) {
68			NV_DEBUG(drm, "native mode from preferred\n");
69			return drm_mode_duplicate(dev, mode);
70		}
71
72		/* Otherwise, take the resolution with the largest width, then
73		 * height, then vertical refresh
74		 */
75		if (mode->hdisplay < high_w)
76			continue;
77
78		if (mode->hdisplay == high_w && mode->vdisplay < high_h)
79			continue;
80
81		if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
82		    drm_mode_vrefresh(mode) < high_v)
83			continue;
84
85		high_w = mode->hdisplay;
86		high_h = mode->vdisplay;
87		high_v = drm_mode_vrefresh(mode);
88		largest = mode;
89	}
90
91	NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
92		      high_w, high_h, high_v);
93	return largest ? drm_mode_duplicate(dev, largest) : NULL;
94}
95
96int
97nouveau_conn_atomic_get_property(struct drm_connector *connector,
98				 const struct drm_connector_state *state,
99				 struct drm_property *property, u64 *val)
100{
101	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
102	struct nouveau_display *disp = nouveau_display(connector->dev);
103	struct drm_device *dev = connector->dev;
104
105	if (property == dev->mode_config.scaling_mode_property)
106		*val = asyc->scaler.mode;
107	else if (property == disp->underscan_property)
108		*val = asyc->scaler.underscan.mode;
109	else if (property == disp->underscan_hborder_property)
110		*val = asyc->scaler.underscan.hborder;
111	else if (property == disp->underscan_vborder_property)
112		*val = asyc->scaler.underscan.vborder;
113	else if (property == disp->dithering_mode)
114		*val = asyc->dither.mode;
115	else if (property == disp->dithering_depth)
116		*val = asyc->dither.depth;
117	else if (property == disp->vibrant_hue_property)
118		*val = asyc->procamp.vibrant_hue;
119	else if (property == disp->color_vibrance_property)
120		*val = asyc->procamp.color_vibrance;
121	else
122		return -EINVAL;
123
124	return 0;
125}
126
127int
128nouveau_conn_atomic_set_property(struct drm_connector *connector,
129				 struct drm_connector_state *state,
130				 struct drm_property *property, u64 val)
131{
132	struct drm_device *dev = connector->dev;
133	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
134	struct nouveau_display *disp = nouveau_display(dev);
135
136	if (property == dev->mode_config.scaling_mode_property) {
137		switch (val) {
138		case DRM_MODE_SCALE_NONE:
139			/* We allow 'None' for EDID modes, even on a fixed
140			 * panel (some exist with support for lower refresh
141			 * rates, which people might want to use for power-
142			 * saving purposes).
143			 *
144			 * Non-EDID modes will force the use of GPU scaling
145			 * to the native mode regardless of this setting.
146			 */
147			switch (connector->connector_type) {
148			case DRM_MODE_CONNECTOR_LVDS:
149			case DRM_MODE_CONNECTOR_eDP:
150				/* ... except prior to G80, where the code
151				 * doesn't support such things.
152				 */
153				if (disp->disp.object.oclass < NV50_DISP)
154					return -EINVAL;
155				break;
156			default:
157				break;
158			}
159			break;
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_event_dtor(&nv_connector->irq);
399	nvif_event_dtor(&nv_connector->hpd);
400	kfree(nv_connector->edid);
401	drm_connector_unregister(connector);
402	drm_connector_cleanup(connector);
403	if (nv_connector->aux.transfer) {
404		drm_dp_cec_unregister_connector(&nv_connector->aux);
405		kfree(nv_connector->aux.name);
406	}
407	nvif_conn_dtor(&nv_connector->conn);
408	kfree(connector);
409}
410
411static struct nouveau_encoder *
412nouveau_connector_ddc_detect(struct drm_connector *connector)
413{
414	struct drm_device *dev = connector->dev;
415	struct pci_dev *pdev = to_pci_dev(dev->dev);
416	struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
417	struct drm_encoder *encoder;
418	int ret;
419	bool switcheroo_ddc = false;
420
421	drm_connector_for_each_possible_encoder(connector, encoder) {
422		nv_encoder = nouveau_encoder(encoder);
423
424		switch (nv_encoder->dcb->type) {
425		case DCB_OUTPUT_DP:
426			ret = nouveau_dp_detect(nouveau_connector(connector),
427						nv_encoder);
428			if (ret == NOUVEAU_DP_MST)
429				return NULL;
430			else if (ret == NOUVEAU_DP_SST)
431				found = nv_encoder;
432
433			break;
434		case DCB_OUTPUT_LVDS:
435			switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
436					    VGA_SWITCHEROO_CAN_SWITCH_DDC);
437			fallthrough;
438		default:
439			if (!nv_encoder->i2c)
440				break;
441
442			if (switcheroo_ddc)
443				vga_switcheroo_lock_ddc(pdev);
444			if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
445				found = nv_encoder;
446			if (switcheroo_ddc)
447				vga_switcheroo_unlock_ddc(pdev);
448
449			break;
450		}
451		if (found)
452			break;
453	}
454
455	return found;
456}
457
458static struct nouveau_encoder *
459nouveau_connector_of_detect(struct drm_connector *connector)
460{
461#ifdef __powerpc__
462	struct drm_device *dev = connector->dev;
463	struct nouveau_connector *nv_connector = nouveau_connector(connector);
464	struct nouveau_encoder *nv_encoder;
465	struct pci_dev *pdev = to_pci_dev(dev->dev);
466	struct device_node *cn, *dn = pci_device_to_OF_node(pdev);
467
468	if (!dn ||
469	    !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
470	      (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
471		return NULL;
472
473	for_each_child_of_node(dn, cn) {
474		const char *name = of_get_property(cn, "name", NULL);
475		const void *edid = of_get_property(cn, "EDID", NULL);
476		int idx = name ? name[strlen(name) - 1] - 'A' : 0;
477
478		if (nv_encoder->dcb->i2c_index == idx && edid) {
479			nv_connector->edid =
480				kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
481			of_node_put(cn);
482			return nv_encoder;
483		}
484	}
485#endif
486	return NULL;
487}
488
489static void
490nouveau_connector_set_encoder(struct drm_connector *connector,
491			      struct nouveau_encoder *nv_encoder)
492{
493	struct nouveau_connector *nv_connector = nouveau_connector(connector);
494	struct nouveau_drm *drm = nouveau_drm(connector->dev);
495	struct drm_device *dev = connector->dev;
496	struct pci_dev *pdev = to_pci_dev(dev->dev);
497
498	if (nv_connector->detected_encoder == nv_encoder)
499		return;
500	nv_connector->detected_encoder = nv_encoder;
501
502	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
503		if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
504			connector->interlace_allowed =
505				nv_encoder->caps.dp_interlace;
506		else
507			connector->interlace_allowed =
508				drm->client.device.info.family < NV_DEVICE_INFO_V0_VOLTA;
509		connector->doublescan_allowed = true;
510	} else
511	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
512	    nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
513		connector->doublescan_allowed = false;
514		connector->interlace_allowed = false;
515	} else {
516		connector->doublescan_allowed = true;
517		if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
518		    (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
519		     (pdev->device & 0x0ff0) != 0x0100 &&
520		     (pdev->device & 0x0ff0) != 0x0150))
521			/* HW is broken */
522			connector->interlace_allowed = false;
523		else
524			connector->interlace_allowed = true;
525	}
526
527	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
528		drm_object_property_set_value(&connector->base,
529			dev->mode_config.dvi_i_subconnector_property,
530			nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
531			DRM_MODE_SUBCONNECTOR_DVID :
532			DRM_MODE_SUBCONNECTOR_DVIA);
533	}
534}
535
536static void
537nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
538			   struct edid *edid)
539{
540	if (nv_connector->edid != edid) {
541		struct edid *old_edid = nv_connector->edid;
542
543		drm_connector_update_edid_property(&nv_connector->base, edid);
544		kfree(old_edid);
545		nv_connector->edid = edid;
546	}
547}
548
549static enum drm_connector_status
550nouveau_connector_detect(struct drm_connector *connector, bool force)
551{
552	struct drm_device *dev = connector->dev;
553	struct nouveau_drm *drm = nouveau_drm(dev);
554	struct nouveau_connector *nv_connector = nouveau_connector(connector);
555	struct nouveau_encoder *nv_encoder = NULL;
556	struct nouveau_encoder *nv_partner;
557	struct i2c_adapter *i2c;
558	int type;
559	int ret;
560	enum drm_connector_status conn_status = connector_status_disconnected;
561
562	/* Outputs are only polled while runtime active, so resuming the
563	 * device here is unnecessary (and would deadlock upon runtime suspend
564	 * because it waits for polling to finish). We do however, want to
565	 * prevent the autosuspend timer from elapsing during this operation
566	 * if possible.
567	 */
568	if (drm_kms_helper_is_poll_worker()) {
569		pm_runtime_get_noresume(dev->dev);
570	} else {
571		ret = pm_runtime_get_sync(dev->dev);
572		if (ret < 0 && ret != -EACCES) {
573			pm_runtime_put_autosuspend(dev->dev);
574			nouveau_connector_set_edid(nv_connector, NULL);
575			return conn_status;
576		}
577	}
578
579	nv_encoder = nouveau_connector_ddc_detect(connector);
580	if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
581		struct edid *new_edid;
582
583		if ((vga_switcheroo_handler_flags() &
584		     VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
585		    nv_connector->type == DCB_CONNECTOR_LVDS)
586			new_edid = drm_get_edid_switcheroo(connector, i2c);
587		else
588			new_edid = drm_get_edid(connector, i2c);
589
590		nouveau_connector_set_edid(nv_connector, new_edid);
591		if (!nv_connector->edid) {
592			NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
593				 connector->name);
594			goto detect_analog;
595		}
596
597		/* Override encoder type for DVI-I based on whether EDID
598		 * says the display is digital or analog, both use the
599		 * same i2c channel so the value returned from ddc_detect
600		 * isn't necessarily correct.
601		 */
602		nv_partner = NULL;
603		if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
604			nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
605		if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
606			nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
607
608		if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
609				    nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
610				   (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
611				    nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
612			if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
613				type = DCB_OUTPUT_TMDS;
614			else
615				type = DCB_OUTPUT_ANALOG;
616
617			nv_encoder = find_encoder(connector, type);
618		}
619
620		nouveau_connector_set_encoder(connector, nv_encoder);
621		conn_status = connector_status_connected;
622
623		if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
624			drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
625
626		goto out;
627	} else {
628		nouveau_connector_set_edid(nv_connector, NULL);
629	}
630
631	nv_encoder = nouveau_connector_of_detect(connector);
632	if (nv_encoder) {
633		nouveau_connector_set_encoder(connector, nv_encoder);
634		conn_status = connector_status_connected;
635		goto out;
636	}
637
638detect_analog:
639	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
640	if (!nv_encoder && !nouveau_tv_disable)
641		nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
642	if (nv_encoder && force) {
643		struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
644		const struct drm_encoder_helper_funcs *helper =
645						encoder->helper_private;
646
647		if (helper->detect(encoder, connector) ==
648						connector_status_connected) {
649			nouveau_connector_set_encoder(connector, nv_encoder);
650			conn_status = connector_status_connected;
651			goto out;
652		}
653	}
654
655 out:
656	if (!nv_connector->edid)
657		drm_dp_cec_unset_edid(&nv_connector->aux);
658
659	pm_runtime_mark_last_busy(dev->dev);
660	pm_runtime_put_autosuspend(dev->dev);
661
662	return conn_status;
663}
664
665static enum drm_connector_status
666nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
667{
668	struct drm_device *dev = connector->dev;
669	struct nouveau_drm *drm = nouveau_drm(dev);
670	struct nouveau_connector *nv_connector = nouveau_connector(connector);
671	struct nouveau_encoder *nv_encoder = NULL;
672	struct edid *edid = NULL;
673	enum drm_connector_status status = connector_status_disconnected;
674
675	nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
676	if (!nv_encoder)
677		goto out;
678
679	/* Try retrieving EDID via DDC */
680	if (!drm->vbios.fp_no_ddc) {
681		status = nouveau_connector_detect(connector, force);
682		if (status == connector_status_connected) {
683			edid = nv_connector->edid;
684			goto out;
685		}
686	}
687
688	/* On some laptops (Sony, i'm looking at you) there appears to
689	 * be no direct way of accessing the panel's EDID.  The only
690	 * option available to us appears to be to ask ACPI for help..
691	 *
692	 * It's important this check's before trying straps, one of the
693	 * said manufacturer's laptops are configured in such a way
694	 * the nouveau decides an entry in the VBIOS FP mode table is
695	 * valid - it's not (rh#613284)
696	 */
697	if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
698		edid = nouveau_acpi_edid(dev, connector);
699		if (edid) {
700			status = connector_status_connected;
701			goto out;
702		}
703	}
704
705	/* If no EDID found above, and the VBIOS indicates a hardcoded
706	 * modeline is avalilable for the panel, set it as the panel's
707	 * native mode and exit.
708	 */
709	if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
710	    nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
711		status = connector_status_connected;
712		goto out;
713	}
714
715	/* Still nothing, some VBIOS images have a hardcoded EDID block
716	 * stored for the panel stored in them.
717	 */
718	if (!drm->vbios.fp_no_ddc) {
719		edid = (struct edid *)nouveau_bios_embedded_edid(dev);
720		if (edid) {
721			edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
722			if (edid)
723				status = connector_status_connected;
724		}
725	}
726
727out:
728#if defined(CONFIG_ACPI_BUTTON) || \
729	(defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
730	if (status == connector_status_connected &&
731	    !nouveau_ignorelid && !acpi_lid_open())
732		status = connector_status_unknown;
733#endif
734
735	nouveau_connector_set_edid(nv_connector, edid);
736	if (nv_encoder)
737		nouveau_connector_set_encoder(connector, nv_encoder);
738	return status;
739}
740
741static void
742nouveau_connector_force(struct drm_connector *connector)
743{
744	struct nouveau_drm *drm = nouveau_drm(connector->dev);
745	struct nouveau_connector *nv_connector = nouveau_connector(connector);
746	struct nouveau_encoder *nv_encoder;
747	int type;
748
749	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
750		if (connector->force == DRM_FORCE_ON_DIGITAL)
751			type = DCB_OUTPUT_TMDS;
752		else
753			type = DCB_OUTPUT_ANALOG;
754	} else
755		type = DCB_OUTPUT_ANY;
756
757	nv_encoder = find_encoder(connector, type);
758	if (!nv_encoder) {
759		NV_ERROR(drm, "can't find encoder to force %s on!\n",
760			 connector->name);
761		connector->status = connector_status_disconnected;
762		return;
763	}
764
765	nouveau_connector_set_encoder(connector, nv_encoder);
766}
767
768static int
769nouveau_connector_set_property(struct drm_connector *connector,
770			       struct drm_property *property, uint64_t value)
771{
772	struct nouveau_connector *nv_connector = nouveau_connector(connector);
773	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
774	struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
775	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
776	int ret;
777
778	ret = connector->funcs->atomic_set_property(&nv_connector->base,
779						    &asyc->state,
780						    property, value);
781	if (ret) {
782		if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
783			return get_slave_funcs(encoder)->set_property(
784				encoder, connector, property, value);
785		return ret;
786	}
787
788	nv_connector->scaling_mode = asyc->scaler.mode;
789	nv_connector->dithering_mode = asyc->dither.mode;
790
791	if (connector->encoder && connector->encoder->crtc) {
792		ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
793					      &connector->encoder->crtc->mode,
794					       connector->encoder->crtc->x,
795					       connector->encoder->crtc->y,
796					       NULL);
797		if (!ret)
798			return -EINVAL;
799	}
800
801	return 0;
802}
803
804struct moderec {
805	int hdisplay;
806	int vdisplay;
807};
808
809static struct moderec scaler_modes[] = {
810	{ 1920, 1200 },
811	{ 1920, 1080 },
812	{ 1680, 1050 },
813	{ 1600, 1200 },
814	{ 1400, 1050 },
815	{ 1280, 1024 },
816	{ 1280, 960 },
817	{ 1152, 864 },
818	{ 1024, 768 },
819	{ 800, 600 },
820	{ 720, 400 },
821	{ 640, 480 },
822	{ 640, 400 },
823	{ 640, 350 },
824	{}
825};
826
827static int
828nouveau_connector_scaler_modes_add(struct drm_connector *connector)
829{
830	struct nouveau_connector *nv_connector = nouveau_connector(connector);
831	struct drm_display_mode *native = nv_connector->native_mode, *m;
832	struct drm_device *dev = connector->dev;
833	struct moderec *mode = &scaler_modes[0];
834	int modes = 0;
835
836	if (!native)
837		return 0;
838
839	while (mode->hdisplay) {
840		if (mode->hdisplay <= native->hdisplay &&
841		    mode->vdisplay <= native->vdisplay &&
842		    (mode->hdisplay != native->hdisplay ||
843		     mode->vdisplay != native->vdisplay)) {
844			m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
845					 drm_mode_vrefresh(native), false,
846					 false, false);
847			if (!m)
848				continue;
849
850			drm_mode_probed_add(connector, m);
851			modes++;
852		}
853
854		mode++;
855	}
856
857	return modes;
858}
859
860static void
861nouveau_connector_detect_depth(struct drm_connector *connector)
862{
863	struct nouveau_drm *drm = nouveau_drm(connector->dev);
864	struct nouveau_connector *nv_connector = nouveau_connector(connector);
865	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
866	struct nvbios *bios = &drm->vbios;
867	struct drm_display_mode *mode = nv_connector->native_mode;
868	bool duallink;
869
870	/* if the edid is feeling nice enough to provide this info, use it */
871	if (nv_connector->edid && connector->display_info.bpc)
872		return;
873
874	/* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
875	if (nv_connector->type == DCB_CONNECTOR_eDP) {
876		connector->display_info.bpc = 6;
877		return;
878	}
879
880	/* we're out of options unless we're LVDS, default to 8bpc */
881	if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
882		connector->display_info.bpc = 8;
883		return;
884	}
885
886	connector->display_info.bpc = 6;
887
888	/* LVDS: panel straps */
889	if (bios->fp_no_ddc) {
890		if (bios->fp.if_is_24bit)
891			connector->display_info.bpc = 8;
892		return;
893	}
894
895	/* LVDS: DDC panel, need to first determine the number of links to
896	 * know which if_is_24bit flag to check...
897	 */
898	if (nv_connector->edid &&
899	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
900		duallink = ((u8 *)nv_connector->edid)[121] == 2;
901	else
902		duallink = mode->clock >= bios->fp.duallink_transition_clk;
903
904	if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
905	    ( duallink && (bios->fp.strapless_is_24bit & 2)))
906		connector->display_info.bpc = 8;
907}
908
909static int
910nouveau_connector_late_register(struct drm_connector *connector)
911{
912	int ret;
913
914	ret = nouveau_backlight_init(connector);
915	if (ret)
916		return ret;
917
918	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
919	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
920		ret = drm_dp_aux_register(&nouveau_connector(connector)->aux);
921		if (ret)
922			goto backlight_fini;
923	}
924
925	return 0;
926backlight_fini:
927	nouveau_backlight_fini(connector);
928	return ret;
929}
930
931static void
932nouveau_connector_early_unregister(struct drm_connector *connector)
933{
934	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
935	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
936		drm_dp_aux_unregister(&nouveau_connector(connector)->aux);
937
938	nouveau_backlight_fini(connector);
939}
940
941static int
942nouveau_connector_get_modes(struct drm_connector *connector)
943{
944	struct drm_device *dev = connector->dev;
945	struct nouveau_drm *drm = nouveau_drm(dev);
946	struct nouveau_connector *nv_connector = nouveau_connector(connector);
947	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
948	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
949	int ret = 0;
950
951	/* destroy the native mode, the attached monitor could have changed.
952	 */
953	if (nv_connector->native_mode) {
954		drm_mode_destroy(dev, nv_connector->native_mode);
955		nv_connector->native_mode = NULL;
956	}
957
958	if (nv_connector->edid)
959		ret = drm_add_edid_modes(connector, nv_connector->edid);
960	else
961	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
962	    (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
963	     drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
964		struct drm_display_mode mode;
965
966		nouveau_bios_fp_mode(dev, &mode);
967		nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
968	}
969
970	/* Determine display colour depth for everything except LVDS now,
971	 * DP requires this before mode_valid() is called.
972	 */
973	if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
974		nouveau_connector_detect_depth(connector);
975
976	/* Find the native mode if this is a digital panel, if we didn't
977	 * find any modes through DDC previously add the native mode to
978	 * the list of modes.
979	 */
980	if (!nv_connector->native_mode)
981		nv_connector->native_mode = nouveau_conn_native_mode(connector);
982	if (ret == 0 && nv_connector->native_mode) {
983		struct drm_display_mode *mode;
984
985		mode = drm_mode_duplicate(dev, nv_connector->native_mode);
986		drm_mode_probed_add(connector, mode);
987		ret = 1;
988	}
989
990	/* Determine LVDS colour depth, must happen after determining
991	 * "native" mode as some VBIOS tables require us to use the
992	 * pixel clock as part of the lookup...
993	 */
994	if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS && nv_connector->native_mode)
995		nouveau_connector_detect_depth(connector);
996
997	if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
998		ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
999
1000	if (nv_connector->type == DCB_CONNECTOR_LVDS ||
1001	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
1002	    nv_connector->type == DCB_CONNECTOR_eDP)
1003		ret += nouveau_connector_scaler_modes_add(connector);
1004
1005	return ret;
1006}
1007
1008static unsigned
1009get_tmds_link_bandwidth(struct drm_connector *connector)
1010{
1011	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1012	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1013	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1014	struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
1015	struct drm_display_info *info = NULL;
1016	unsigned duallink_scale =
1017		nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
1018
1019	if (drm_detect_hdmi_monitor(nv_connector->edid)) {
1020		info = &nv_connector->base.display_info;
1021		duallink_scale = 1;
1022	}
1023
1024	if (info) {
1025		if (nouveau_hdmimhz > 0)
1026			return nouveau_hdmimhz * 1000;
1027		/* Note: these limits are conservative, some Fermi's
1028		 * can do 297 MHz. Unclear how this can be determined.
1029		 */
1030		if (drm->client.device.info.chipset >= 0x120) {
1031			const int max_tmds_clock =
1032				info->hdmi.scdc.scrambling.supported ?
1033				594000 : 340000;
1034			return info->max_tmds_clock ?
1035				min(info->max_tmds_clock, max_tmds_clock) :
1036				max_tmds_clock;
1037		}
1038		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1039			return 297000;
1040		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1041			return 225000;
1042	}
1043
1044	if (dcb->location != DCB_LOC_ON_CHIP ||
1045	    drm->client.device.info.chipset >= 0x46)
1046		return 165000 * duallink_scale;
1047	else if (drm->client.device.info.chipset >= 0x40)
1048		return 155000 * duallink_scale;
1049	else if (drm->client.device.info.chipset >= 0x18)
1050		return 135000 * duallink_scale;
1051	else
1052		return 112000 * duallink_scale;
1053}
1054
1055static enum drm_mode_status
1056nouveau_connector_mode_valid(struct drm_connector *connector,
1057			     struct drm_display_mode *mode)
1058{
1059	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1060	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1061	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1062	unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1063
1064	switch (nv_encoder->dcb->type) {
1065	case DCB_OUTPUT_LVDS:
1066		if (nv_connector->native_mode &&
1067		    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1068		     mode->vdisplay > nv_connector->native_mode->vdisplay))
1069			return MODE_PANEL;
1070
1071		min_clock = 0;
1072		max_clock = 400000;
1073		break;
1074	case DCB_OUTPUT_TMDS:
1075		max_clock = get_tmds_link_bandwidth(connector);
1076		break;
1077	case DCB_OUTPUT_ANALOG:
1078		max_clock = nv_encoder->dcb->crtconf.maxfreq;
1079		if (!max_clock)
1080			max_clock = 350000;
1081		break;
1082	case DCB_OUTPUT_TV:
1083		return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1084	case DCB_OUTPUT_DP:
1085		return nv50_dp_mode_valid(nv_encoder, mode, NULL);
1086	default:
1087		BUG();
1088		return MODE_BAD;
1089	}
1090
1091	if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1092		clock *= 2;
1093
1094	if (clock < min_clock)
1095		return MODE_CLOCK_LOW;
1096	if (clock > max_clock)
1097		return MODE_CLOCK_HIGH;
1098
1099	return MODE_OK;
1100}
1101
1102static struct drm_encoder *
1103nouveau_connector_best_encoder(struct drm_connector *connector)
1104{
1105	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1106
1107	if (nv_connector->detected_encoder)
1108		return to_drm_encoder(nv_connector->detected_encoder);
1109
1110	return NULL;
1111}
1112
1113static int
1114nouveau_connector_atomic_check(struct drm_connector *connector, struct drm_atomic_state *state)
1115{
1116	struct nouveau_connector *nv_conn = nouveau_connector(connector);
1117	struct drm_connector_state *conn_state =
1118		drm_atomic_get_new_connector_state(state, connector);
1119
1120	if (!nv_conn->dp_encoder || !nv50_has_mst(nouveau_drm(connector->dev)))
1121		return 0;
1122
1123	return drm_dp_mst_root_conn_atomic_check(conn_state, &nv_conn->dp_encoder->dp.mstm->mgr);
1124}
1125
1126static const struct drm_connector_helper_funcs
1127nouveau_connector_helper_funcs = {
1128	.get_modes = nouveau_connector_get_modes,
1129	.mode_valid = nouveau_connector_mode_valid,
1130	.best_encoder = nouveau_connector_best_encoder,
1131	.atomic_check = nouveau_connector_atomic_check,
1132};
1133
1134static const struct drm_connector_funcs
1135nouveau_connector_funcs = {
1136	.dpms = drm_helper_connector_dpms,
1137	.reset = nouveau_conn_reset,
1138	.detect = nouveau_connector_detect,
1139	.force = nouveau_connector_force,
1140	.fill_modes = drm_helper_probe_single_connector_modes,
1141	.set_property = nouveau_connector_set_property,
1142	.destroy = nouveau_connector_destroy,
1143	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1144	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1145	.atomic_set_property = nouveau_conn_atomic_set_property,
1146	.atomic_get_property = nouveau_conn_atomic_get_property,
1147	.late_register = nouveau_connector_late_register,
1148	.early_unregister = nouveau_connector_early_unregister,
1149};
1150
1151static const struct drm_connector_funcs
1152nouveau_connector_funcs_lvds = {
1153	.dpms = drm_helper_connector_dpms,
1154	.reset = nouveau_conn_reset,
1155	.detect = nouveau_connector_detect_lvds,
1156	.force = nouveau_connector_force,
1157	.fill_modes = drm_helper_probe_single_connector_modes,
1158	.set_property = nouveau_connector_set_property,
1159	.destroy = nouveau_connector_destroy,
1160	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1161	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1162	.atomic_set_property = nouveau_conn_atomic_set_property,
1163	.atomic_get_property = nouveau_conn_atomic_get_property,
1164	.late_register = nouveau_connector_late_register,
1165	.early_unregister = nouveau_connector_early_unregister,
1166};
1167
1168void
1169nouveau_connector_hpd(struct nouveau_connector *nv_connector, u64 bits)
1170{
1171	struct nouveau_drm *drm = nouveau_drm(nv_connector->base.dev);
1172	u32 mask = drm_connector_mask(&nv_connector->base);
1173	unsigned long flags;
1174
1175	spin_lock_irqsave(&drm->hpd_lock, flags);
1176	if (!(drm->hpd_pending & mask)) {
1177		nv_connector->hpd_pending |= bits;
1178		drm->hpd_pending |= mask;
1179		schedule_work(&drm->hpd_work);
1180	}
1181	spin_unlock_irqrestore(&drm->hpd_lock, flags);
1182}
1183
1184static int
1185nouveau_connector_irq(struct nvif_event *event, void *repv, u32 repc)
1186{
1187	struct nouveau_connector *nv_connector = container_of(event, typeof(*nv_connector), irq);
1188
1189	schedule_work(&nv_connector->irq_work);
1190	return NVIF_EVENT_KEEP;
1191}
1192
1193static int
1194nouveau_connector_hotplug(struct nvif_event *event, void *repv, u32 repc)
1195{
1196	struct nouveau_connector *nv_connector = container_of(event, typeof(*nv_connector), hpd);
1197	struct nvif_conn_event_v0 *rep = repv;
1198
1199	nouveau_connector_hpd(nv_connector, rep->types);
1200	return NVIF_EVENT_KEEP;
1201}
1202
1203static ssize_t
1204nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1205{
1206	struct nouveau_connector *nv_connector =
1207		container_of(obj, typeof(*nv_connector), aux);
1208	struct nouveau_encoder *nv_encoder;
1209	struct nvkm_i2c_aux *aux;
1210	u8 size = msg->size;
1211	int ret;
1212
1213	nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1214	if (!nv_encoder || !(aux = nv_encoder->aux))
1215		return -ENODEV;
1216	if (WARN_ON(msg->size > 16))
1217		return -E2BIG;
1218
1219	ret = nvkm_i2c_aux_acquire(aux);
1220	if (ret)
1221		return ret;
1222
1223	ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1224				msg->buffer, &size);
1225	nvkm_i2c_aux_release(aux);
1226	if (ret >= 0) {
1227		msg->reply = ret;
1228		return size;
1229	}
1230
1231	return ret;
1232}
1233
1234static int
1235drm_conntype_from_dcb(enum dcb_connector_type dcb)
1236{
1237	switch (dcb) {
1238	case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1239	case DCB_CONNECTOR_TV_0     :
1240	case DCB_CONNECTOR_TV_1     :
1241	case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1242	case DCB_CONNECTOR_DMS59_0  :
1243	case DCB_CONNECTOR_DMS59_1  :
1244	case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1245	case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1246	case DCB_CONNECTOR_LVDS     :
1247	case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1248	case DCB_CONNECTOR_DMS59_DP0:
1249	case DCB_CONNECTOR_DMS59_DP1:
1250	case DCB_CONNECTOR_DP       :
1251	case DCB_CONNECTOR_mDP      :
1252	case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1253	case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1254	case DCB_CONNECTOR_HDMI_0   :
1255	case DCB_CONNECTOR_HDMI_1   :
1256	case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1257	case DCB_CONNECTOR_WFD	    : return DRM_MODE_CONNECTOR_VIRTUAL;
1258	default:
1259		break;
1260	}
1261
1262	return DRM_MODE_CONNECTOR_Unknown;
1263}
1264
1265struct drm_connector *
1266nouveau_connector_create(struct drm_device *dev,
1267			 const struct dcb_output *dcbe)
1268{
1269	const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1270	struct nouveau_drm *drm = nouveau_drm(dev);
1271	struct nouveau_display *disp = nouveau_display(dev);
1272	struct nouveau_connector *nv_connector = NULL;
1273	struct drm_connector *connector;
1274	struct drm_connector_list_iter conn_iter;
1275	char aux_name[48] = {0};
1276	int index = dcbe->connector;
1277	int type, ret = 0;
1278	bool dummy;
1279
1280	drm_connector_list_iter_begin(dev, &conn_iter);
1281	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1282		nv_connector = nouveau_connector(connector);
1283		if (nv_connector->index == index) {
1284			drm_connector_list_iter_end(&conn_iter);
1285			return connector;
1286		}
1287	}
1288	drm_connector_list_iter_end(&conn_iter);
1289
1290	nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1291	if (!nv_connector)
1292		return ERR_PTR(-ENOMEM);
1293
1294	connector = &nv_connector->base;
1295	nv_connector->index = index;
1296	INIT_WORK(&nv_connector->irq_work, nouveau_dp_irq);
1297
1298	/* attempt to parse vbios connector type and hotplug gpio */
1299	nv_connector->dcb = olddcb_conn(dev, index);
1300	if (nv_connector->dcb) {
1301		u32 entry = ROM16(nv_connector->dcb[0]);
1302		if (olddcb_conntab(dev)[3] >= 4)
1303			entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1304
1305		nv_connector->type = nv_connector->dcb[0];
1306		if (drm_conntype_from_dcb(nv_connector->type) ==
1307					  DRM_MODE_CONNECTOR_Unknown) {
1308			NV_WARN(drm, "unknown connector type %02x\n",
1309				nv_connector->type);
1310			nv_connector->type = DCB_CONNECTOR_NONE;
1311		}
1312
1313		/* Gigabyte NX85T */
1314		if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1315			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1316				nv_connector->type = DCB_CONNECTOR_DVI_I;
1317		}
1318
1319		/* Gigabyte GV-NX86T512H */
1320		if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1321			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1322				nv_connector->type = DCB_CONNECTOR_DVI_I;
1323		}
1324	} else {
1325		nv_connector->type = DCB_CONNECTOR_NONE;
1326	}
1327
1328	/* no vbios data, or an unknown dcb connector type - attempt to
1329	 * figure out something suitable ourselves
1330	 */
1331	if (nv_connector->type == DCB_CONNECTOR_NONE) {
1332		struct nouveau_drm *drm = nouveau_drm(dev);
1333		struct dcb_table *dcbt = &drm->vbios.dcb;
1334		u32 encoders = 0;
1335		int i;
1336
1337		for (i = 0; i < dcbt->entries; i++) {
1338			if (dcbt->entry[i].connector == nv_connector->index)
1339				encoders |= (1 << dcbt->entry[i].type);
1340		}
1341
1342		if (encoders & (1 << DCB_OUTPUT_DP)) {
1343			if (encoders & (1 << DCB_OUTPUT_TMDS))
1344				nv_connector->type = DCB_CONNECTOR_DP;
1345			else
1346				nv_connector->type = DCB_CONNECTOR_eDP;
1347		} else
1348		if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1349			if (encoders & (1 << DCB_OUTPUT_ANALOG))
1350				nv_connector->type = DCB_CONNECTOR_DVI_I;
1351			else
1352				nv_connector->type = DCB_CONNECTOR_DVI_D;
1353		} else
1354		if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1355			nv_connector->type = DCB_CONNECTOR_VGA;
1356		} else
1357		if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1358			nv_connector->type = DCB_CONNECTOR_LVDS;
1359		} else
1360		if (encoders & (1 << DCB_OUTPUT_TV)) {
1361			nv_connector->type = DCB_CONNECTOR_TV_0;
1362		}
1363	}
1364
1365	switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1366	case DRM_MODE_CONNECTOR_LVDS:
1367		ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1368		if (ret) {
1369			NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1370			kfree(nv_connector);
1371			return ERR_PTR(ret);
1372		}
1373
1374		funcs = &nouveau_connector_funcs_lvds;
1375		break;
1376	case DRM_MODE_CONNECTOR_DisplayPort:
1377	case DRM_MODE_CONNECTOR_eDP:
1378		nv_connector->aux.dev = connector->kdev;
1379		nv_connector->aux.drm_dev = dev;
1380		nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1381		snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1382			 dcbe->hasht, dcbe->hashm);
1383		nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1384		if (!nv_connector->aux.name) {
1385			kfree(nv_connector);
1386			return ERR_PTR(-ENOMEM);
1387		}
1388		drm_dp_aux_init(&nv_connector->aux);
1389		break;
1390	default:
1391		funcs = &nouveau_connector_funcs;
1392		break;
1393	}
1394
1395	/* HDMI 3D support */
1396	if ((disp->disp.object.oclass >= G82_DISP)
1397	    && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1398		|| (type == DRM_MODE_CONNECTOR_eDP)
1399		|| (type == DRM_MODE_CONNECTOR_HDMIA)))
1400		connector->stereo_allowed = true;
1401
1402	/* defaults, will get overridden in detect() */
1403	connector->interlace_allowed = false;
1404	connector->doublescan_allowed = false;
1405
1406	drm_connector_init(dev, connector, funcs, type);
1407	drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1408	connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1409
1410	if (nv_connector->dcb && (disp->disp.conn_mask & BIT(nv_connector->index))) {
1411		ret = nvif_conn_ctor(&disp->disp, nv_connector->base.name, nv_connector->index,
1412				     &nv_connector->conn);
1413		if (ret) {
1414			goto drm_conn_err;
1415		}
1416
1417		ret = nvif_conn_event_ctor(&nv_connector->conn, "kmsHotplug",
1418					   nouveau_connector_hotplug,
1419					   NVIF_CONN_EVENT_V0_PLUG | NVIF_CONN_EVENT_V0_UNPLUG,
1420					   &nv_connector->hpd);
1421		if (ret == 0)
1422			connector->polled = DRM_CONNECTOR_POLL_HPD;
1423
1424		if (nv_connector->aux.transfer) {
1425			ret = nvif_conn_event_ctor(&nv_connector->conn, "kmsDpIrq",
1426						   nouveau_connector_irq, NVIF_CONN_EVENT_V0_IRQ,
1427						   &nv_connector->irq);
1428			if (ret) {
1429				nvif_event_dtor(&nv_connector->hpd);
1430				nvif_conn_dtor(&nv_connector->conn);
1431				goto drm_conn_err;
1432			}
1433		}
1434	}
1435
1436	connector->funcs->reset(connector);
1437	nouveau_conn_attach_properties(connector);
1438
1439	/* Default scaling mode */
1440	switch (nv_connector->type) {
1441	case DCB_CONNECTOR_LVDS:
1442	case DCB_CONNECTOR_LVDS_SPWG:
1443	case DCB_CONNECTOR_eDP:
1444		/* see note in nouveau_connector_set_property() */
1445		if (disp->disp.object.oclass < NV50_DISP) {
1446			nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1447			break;
1448		}
1449		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1450		break;
1451	default:
1452		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1453		break;
1454	}
1455
1456	/* dithering properties */
1457	switch (nv_connector->type) {
1458	case DCB_CONNECTOR_TV_0:
1459	case DCB_CONNECTOR_TV_1:
1460	case DCB_CONNECTOR_TV_3:
1461	case DCB_CONNECTOR_VGA:
1462		break;
1463	default:
1464		nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1465		break;
1466	}
1467
1468	switch (type) {
1469	case DRM_MODE_CONNECTOR_DisplayPort:
1470		nv_connector->dp_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1471		fallthrough;
1472	case DRM_MODE_CONNECTOR_eDP:
1473		drm_dp_cec_register_connector(&nv_connector->aux, connector);
1474		break;
1475	}
1476
1477	drm_connector_register(connector);
1478	return connector;
1479
1480drm_conn_err:
1481	drm_connector_cleanup(connector);
1482	kfree(nv_connector);
1483	return ERR_PTR(ret);
1484}
1485