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 
53 struct drm_display_mode *
54 nouveau_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 
97 int
98 nouveau_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 
128 int
129 nouveau_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 
221 void
222 nouveau_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 
230 struct drm_connector_state *
231 nouveau_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 
245 void
246 nouveau_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 
283 void
284 nouveau_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 
361 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
362 int nouveau_tv_disable = 0;
363 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
364 
365 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
366 int nouveau_ignorelid = 0;
367 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
368 
369 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
370 int nouveau_duallink = 1;
371 module_param_named(duallink, nouveau_duallink, int, 0400);
372 
373 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
374 int nouveau_hdmimhz = 0;
375 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
376 
377 struct nouveau_encoder *
378 find_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 
394 static void
395 nouveau_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 
410 static struct nouveau_encoder *
411 nouveau_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 
456 static struct nouveau_encoder *
457 nouveau_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 
486 static void
487 nouveau_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 = true;
504 		connector->doublescan_allowed = true;
505 	} else
506 	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
507 	    nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
508 		connector->doublescan_allowed = false;
509 		connector->interlace_allowed = false;
510 	} else {
511 		connector->doublescan_allowed = true;
512 		if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
513 		    (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
514 		     (dev->pdev->device & 0x0ff0) != 0x0100 &&
515 		     (dev->pdev->device & 0x0ff0) != 0x0150))
516 			/* HW is broken */
517 			connector->interlace_allowed = false;
518 		else
519 			connector->interlace_allowed = true;
520 	}
521 
522 	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
523 		drm_object_property_set_value(&connector->base,
524 			dev->mode_config.dvi_i_subconnector_property,
525 			nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
526 			DRM_MODE_SUBCONNECTOR_DVID :
527 			DRM_MODE_SUBCONNECTOR_DVIA);
528 	}
529 }
530 
531 static void
532 nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
533 			   struct edid *edid)
534 {
535 	if (nv_connector->edid != edid) {
536 		struct edid *old_edid = nv_connector->edid;
537 
538 		drm_connector_update_edid_property(&nv_connector->base, edid);
539 		kfree(old_edid);
540 		nv_connector->edid = edid;
541 	}
542 }
543 
544 static enum drm_connector_status
545 nouveau_connector_detect(struct drm_connector *connector, bool force)
546 {
547 	struct drm_device *dev = connector->dev;
548 	struct nouveau_drm *drm = nouveau_drm(dev);
549 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
550 	struct nouveau_encoder *nv_encoder = NULL;
551 	struct nouveau_encoder *nv_partner;
552 	struct i2c_adapter *i2c;
553 	int type;
554 	int ret;
555 	enum drm_connector_status conn_status = connector_status_disconnected;
556 
557 	/* Outputs are only polled while runtime active, so resuming the
558 	 * device here is unnecessary (and would deadlock upon runtime suspend
559 	 * because it waits for polling to finish). We do however, want to
560 	 * prevent the autosuspend timer from elapsing during this operation
561 	 * if possible.
562 	 */
563 	if (drm_kms_helper_is_poll_worker()) {
564 		pm_runtime_get_noresume(dev->dev);
565 	} else {
566 		ret = pm_runtime_get_sync(dev->dev);
567 		if (ret < 0 && ret != -EACCES) {
568 			pm_runtime_put_autosuspend(dev->dev);
569 			nouveau_connector_set_edid(nv_connector, NULL);
570 			return conn_status;
571 		}
572 	}
573 
574 	nv_encoder = nouveau_connector_ddc_detect(connector);
575 	if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
576 		struct edid *new_edid;
577 
578 		if ((vga_switcheroo_handler_flags() &
579 		     VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
580 		    nv_connector->type == DCB_CONNECTOR_LVDS)
581 			new_edid = drm_get_edid_switcheroo(connector, i2c);
582 		else
583 			new_edid = drm_get_edid(connector, i2c);
584 
585 		nouveau_connector_set_edid(nv_connector, new_edid);
586 		if (!nv_connector->edid) {
587 			NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
588 				 connector->name);
589 			goto detect_analog;
590 		}
591 
592 		/* Override encoder type for DVI-I based on whether EDID
593 		 * says the display is digital or analog, both use the
594 		 * same i2c channel so the value returned from ddc_detect
595 		 * isn't necessarily correct.
596 		 */
597 		nv_partner = NULL;
598 		if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
599 			nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
600 		if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
601 			nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
602 
603 		if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
604 				    nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
605 				   (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
606 				    nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
607 			if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
608 				type = DCB_OUTPUT_TMDS;
609 			else
610 				type = DCB_OUTPUT_ANALOG;
611 
612 			nv_encoder = find_encoder(connector, type);
613 		}
614 
615 		nouveau_connector_set_encoder(connector, nv_encoder);
616 		conn_status = connector_status_connected;
617 		drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
618 		goto out;
619 	} else {
620 		nouveau_connector_set_edid(nv_connector, NULL);
621 	}
622 
623 	nv_encoder = nouveau_connector_of_detect(connector);
624 	if (nv_encoder) {
625 		nouveau_connector_set_encoder(connector, nv_encoder);
626 		conn_status = connector_status_connected;
627 		goto out;
628 	}
629 
630 detect_analog:
631 	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
632 	if (!nv_encoder && !nouveau_tv_disable)
633 		nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
634 	if (nv_encoder && force) {
635 		struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
636 		const struct drm_encoder_helper_funcs *helper =
637 						encoder->helper_private;
638 
639 		if (helper->detect(encoder, connector) ==
640 						connector_status_connected) {
641 			nouveau_connector_set_encoder(connector, nv_encoder);
642 			conn_status = connector_status_connected;
643 			goto out;
644 		}
645 	}
646 
647  out:
648 	if (!nv_connector->edid)
649 		drm_dp_cec_unset_edid(&nv_connector->aux);
650 
651 	pm_runtime_mark_last_busy(dev->dev);
652 	pm_runtime_put_autosuspend(dev->dev);
653 
654 	return conn_status;
655 }
656 
657 static enum drm_connector_status
658 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
659 {
660 	struct drm_device *dev = connector->dev;
661 	struct nouveau_drm *drm = nouveau_drm(dev);
662 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
663 	struct nouveau_encoder *nv_encoder = NULL;
664 	struct edid *edid = NULL;
665 	enum drm_connector_status status = connector_status_disconnected;
666 
667 	nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
668 	if (!nv_encoder)
669 		goto out;
670 
671 	/* Try retrieving EDID via DDC */
672 	if (!drm->vbios.fp_no_ddc) {
673 		status = nouveau_connector_detect(connector, force);
674 		if (status == connector_status_connected) {
675 			edid = nv_connector->edid;
676 			goto out;
677 		}
678 	}
679 
680 	/* On some laptops (Sony, i'm looking at you) there appears to
681 	 * be no direct way of accessing the panel's EDID.  The only
682 	 * option available to us appears to be to ask ACPI for help..
683 	 *
684 	 * It's important this check's before trying straps, one of the
685 	 * said manufacturer's laptops are configured in such a way
686 	 * the nouveau decides an entry in the VBIOS FP mode table is
687 	 * valid - it's not (rh#613284)
688 	 */
689 	if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
690 		edid = nouveau_acpi_edid(dev, connector);
691 		if (edid) {
692 			status = connector_status_connected;
693 			goto out;
694 		}
695 	}
696 
697 	/* If no EDID found above, and the VBIOS indicates a hardcoded
698 	 * modeline is avalilable for the panel, set it as the panel's
699 	 * native mode and exit.
700 	 */
701 	if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
702 	    nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
703 		status = connector_status_connected;
704 		goto out;
705 	}
706 
707 	/* Still nothing, some VBIOS images have a hardcoded EDID block
708 	 * stored for the panel stored in them.
709 	 */
710 	if (!drm->vbios.fp_no_ddc) {
711 		edid = (struct edid *)nouveau_bios_embedded_edid(dev);
712 		if (edid) {
713 			edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
714 			if (edid)
715 				status = connector_status_connected;
716 		}
717 	}
718 
719 out:
720 #if defined(CONFIG_ACPI_BUTTON) || \
721 	(defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
722 	if (status == connector_status_connected &&
723 	    !nouveau_ignorelid && !acpi_lid_open())
724 		status = connector_status_unknown;
725 #endif
726 
727 	nouveau_connector_set_edid(nv_connector, edid);
728 	nouveau_connector_set_encoder(connector, nv_encoder);
729 	return status;
730 }
731 
732 static void
733 nouveau_connector_force(struct drm_connector *connector)
734 {
735 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
736 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
737 	struct nouveau_encoder *nv_encoder;
738 	int type;
739 
740 	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
741 		if (connector->force == DRM_FORCE_ON_DIGITAL)
742 			type = DCB_OUTPUT_TMDS;
743 		else
744 			type = DCB_OUTPUT_ANALOG;
745 	} else
746 		type = DCB_OUTPUT_ANY;
747 
748 	nv_encoder = find_encoder(connector, type);
749 	if (!nv_encoder) {
750 		NV_ERROR(drm, "can't find encoder to force %s on!\n",
751 			 connector->name);
752 		connector->status = connector_status_disconnected;
753 		return;
754 	}
755 
756 	nouveau_connector_set_encoder(connector, nv_encoder);
757 }
758 
759 static int
760 nouveau_connector_set_property(struct drm_connector *connector,
761 			       struct drm_property *property, uint64_t value)
762 {
763 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
764 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
765 	struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
766 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
767 	int ret;
768 
769 	ret = connector->funcs->atomic_set_property(&nv_connector->base,
770 						    &asyc->state,
771 						    property, value);
772 	if (ret) {
773 		if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
774 			return get_slave_funcs(encoder)->set_property(
775 				encoder, connector, property, value);
776 		return ret;
777 	}
778 
779 	nv_connector->scaling_mode = asyc->scaler.mode;
780 	nv_connector->dithering_mode = asyc->dither.mode;
781 
782 	if (connector->encoder && connector->encoder->crtc) {
783 		ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
784 					      &connector->encoder->crtc->mode,
785 					       connector->encoder->crtc->x,
786 					       connector->encoder->crtc->y,
787 					       NULL);
788 		if (!ret)
789 			return -EINVAL;
790 	}
791 
792 	return 0;
793 }
794 
795 struct moderec {
796 	int hdisplay;
797 	int vdisplay;
798 };
799 
800 static struct moderec scaler_modes[] = {
801 	{ 1920, 1200 },
802 	{ 1920, 1080 },
803 	{ 1680, 1050 },
804 	{ 1600, 1200 },
805 	{ 1400, 1050 },
806 	{ 1280, 1024 },
807 	{ 1280, 960 },
808 	{ 1152, 864 },
809 	{ 1024, 768 },
810 	{ 800, 600 },
811 	{ 720, 400 },
812 	{ 640, 480 },
813 	{ 640, 400 },
814 	{ 640, 350 },
815 	{}
816 };
817 
818 static int
819 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
820 {
821 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
822 	struct drm_display_mode *native = nv_connector->native_mode, *m;
823 	struct drm_device *dev = connector->dev;
824 	struct moderec *mode = &scaler_modes[0];
825 	int modes = 0;
826 
827 	if (!native)
828 		return 0;
829 
830 	while (mode->hdisplay) {
831 		if (mode->hdisplay <= native->hdisplay &&
832 		    mode->vdisplay <= native->vdisplay &&
833 		    (mode->hdisplay != native->hdisplay ||
834 		     mode->vdisplay != native->vdisplay)) {
835 			m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
836 					 drm_mode_vrefresh(native), false,
837 					 false, false);
838 			if (!m)
839 				continue;
840 
841 			drm_mode_probed_add(connector, m);
842 			modes++;
843 		}
844 
845 		mode++;
846 	}
847 
848 	return modes;
849 }
850 
851 static void
852 nouveau_connector_detect_depth(struct drm_connector *connector)
853 {
854 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
855 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
856 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
857 	struct nvbios *bios = &drm->vbios;
858 	struct drm_display_mode *mode = nv_connector->native_mode;
859 	bool duallink;
860 
861 	/* if the edid is feeling nice enough to provide this info, use it */
862 	if (nv_connector->edid && connector->display_info.bpc)
863 		return;
864 
865 	/* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
866 	if (nv_connector->type == DCB_CONNECTOR_eDP) {
867 		connector->display_info.bpc = 6;
868 		return;
869 	}
870 
871 	/* we're out of options unless we're LVDS, default to 8bpc */
872 	if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
873 		connector->display_info.bpc = 8;
874 		return;
875 	}
876 
877 	connector->display_info.bpc = 6;
878 
879 	/* LVDS: panel straps */
880 	if (bios->fp_no_ddc) {
881 		if (bios->fp.if_is_24bit)
882 			connector->display_info.bpc = 8;
883 		return;
884 	}
885 
886 	/* LVDS: DDC panel, need to first determine the number of links to
887 	 * know which if_is_24bit flag to check...
888 	 */
889 	if (nv_connector->edid &&
890 	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
891 		duallink = ((u8 *)nv_connector->edid)[121] == 2;
892 	else
893 		duallink = mode->clock >= bios->fp.duallink_transition_clk;
894 
895 	if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
896 	    ( duallink && (bios->fp.strapless_is_24bit & 2)))
897 		connector->display_info.bpc = 8;
898 }
899 
900 static int
901 nouveau_connector_late_register(struct drm_connector *connector)
902 {
903 	int ret;
904 
905 	ret = nouveau_backlight_init(connector);
906 
907 	return ret;
908 }
909 
910 static void
911 nouveau_connector_early_unregister(struct drm_connector *connector)
912 {
913 	nouveau_backlight_fini(connector);
914 }
915 
916 static int
917 nouveau_connector_get_modes(struct drm_connector *connector)
918 {
919 	struct drm_device *dev = connector->dev;
920 	struct nouveau_drm *drm = nouveau_drm(dev);
921 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
922 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
923 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
924 	int ret = 0;
925 
926 	/* destroy the native mode, the attached monitor could have changed.
927 	 */
928 	if (nv_connector->native_mode) {
929 		drm_mode_destroy(dev, nv_connector->native_mode);
930 		nv_connector->native_mode = NULL;
931 	}
932 
933 	if (nv_connector->edid)
934 		ret = drm_add_edid_modes(connector, nv_connector->edid);
935 	else
936 	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
937 	    (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
938 	     drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
939 		struct drm_display_mode mode;
940 
941 		nouveau_bios_fp_mode(dev, &mode);
942 		nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
943 	}
944 
945 	/* Determine display colour depth for everything except LVDS now,
946 	 * DP requires this before mode_valid() is called.
947 	 */
948 	if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
949 		nouveau_connector_detect_depth(connector);
950 
951 	/* Find the native mode if this is a digital panel, if we didn't
952 	 * find any modes through DDC previously add the native mode to
953 	 * the list of modes.
954 	 */
955 	if (!nv_connector->native_mode)
956 		nv_connector->native_mode = nouveau_conn_native_mode(connector);
957 	if (ret == 0 && nv_connector->native_mode) {
958 		struct drm_display_mode *mode;
959 
960 		mode = drm_mode_duplicate(dev, nv_connector->native_mode);
961 		drm_mode_probed_add(connector, mode);
962 		ret = 1;
963 	}
964 
965 	/* Determine LVDS colour depth, must happen after determining
966 	 * "native" mode as some VBIOS tables require us to use the
967 	 * pixel clock as part of the lookup...
968 	 */
969 	if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
970 		nouveau_connector_detect_depth(connector);
971 
972 	if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
973 		ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
974 
975 	if (nv_connector->type == DCB_CONNECTOR_LVDS ||
976 	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
977 	    nv_connector->type == DCB_CONNECTOR_eDP)
978 		ret += nouveau_connector_scaler_modes_add(connector);
979 
980 	return ret;
981 }
982 
983 static unsigned
984 get_tmds_link_bandwidth(struct drm_connector *connector)
985 {
986 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
987 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
988 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
989 	struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
990 	struct drm_display_info *info = NULL;
991 	unsigned duallink_scale =
992 		nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
993 
994 	if (drm_detect_hdmi_monitor(nv_connector->edid)) {
995 		info = &nv_connector->base.display_info;
996 		duallink_scale = 1;
997 	}
998 
999 	if (info) {
1000 		if (nouveau_hdmimhz > 0)
1001 			return nouveau_hdmimhz * 1000;
1002 		/* Note: these limits are conservative, some Fermi's
1003 		 * can do 297 MHz. Unclear how this can be determined.
1004 		 */
1005 		if (drm->client.device.info.chipset >= 0x120) {
1006 			const int max_tmds_clock =
1007 				info->hdmi.scdc.scrambling.supported ?
1008 				594000 : 340000;
1009 			return info->max_tmds_clock ?
1010 				min(info->max_tmds_clock, max_tmds_clock) :
1011 				max_tmds_clock;
1012 		}
1013 		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1014 			return 297000;
1015 		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1016 			return 225000;
1017 	}
1018 
1019 	if (dcb->location != DCB_LOC_ON_CHIP ||
1020 	    drm->client.device.info.chipset >= 0x46)
1021 		return 165000 * duallink_scale;
1022 	else if (drm->client.device.info.chipset >= 0x40)
1023 		return 155000 * duallink_scale;
1024 	else if (drm->client.device.info.chipset >= 0x18)
1025 		return 135000 * duallink_scale;
1026 	else
1027 		return 112000 * duallink_scale;
1028 }
1029 
1030 static enum drm_mode_status
1031 nouveau_connector_mode_valid(struct drm_connector *connector,
1032 			     struct drm_display_mode *mode)
1033 {
1034 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1035 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1036 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1037 	unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1038 
1039 	switch (nv_encoder->dcb->type) {
1040 	case DCB_OUTPUT_LVDS:
1041 		if (nv_connector->native_mode &&
1042 		    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1043 		     mode->vdisplay > nv_connector->native_mode->vdisplay))
1044 			return MODE_PANEL;
1045 
1046 		min_clock = 0;
1047 		max_clock = 400000;
1048 		break;
1049 	case DCB_OUTPUT_TMDS:
1050 		max_clock = get_tmds_link_bandwidth(connector);
1051 		break;
1052 	case DCB_OUTPUT_ANALOG:
1053 		max_clock = nv_encoder->dcb->crtconf.maxfreq;
1054 		if (!max_clock)
1055 			max_clock = 350000;
1056 		break;
1057 	case DCB_OUTPUT_TV:
1058 		return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1059 	case DCB_OUTPUT_DP:
1060 		return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1061 	default:
1062 		BUG();
1063 		return MODE_BAD;
1064 	}
1065 
1066 	if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1067 		clock *= 2;
1068 
1069 	if (clock < min_clock)
1070 		return MODE_CLOCK_LOW;
1071 	if (clock > max_clock)
1072 		return MODE_CLOCK_HIGH;
1073 
1074 	return MODE_OK;
1075 }
1076 
1077 static struct drm_encoder *
1078 nouveau_connector_best_encoder(struct drm_connector *connector)
1079 {
1080 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1081 
1082 	if (nv_connector->detected_encoder)
1083 		return to_drm_encoder(nv_connector->detected_encoder);
1084 
1085 	return NULL;
1086 }
1087 
1088 static const struct drm_connector_helper_funcs
1089 nouveau_connector_helper_funcs = {
1090 	.get_modes = nouveau_connector_get_modes,
1091 	.mode_valid = nouveau_connector_mode_valid,
1092 	.best_encoder = nouveau_connector_best_encoder,
1093 };
1094 
1095 static const struct drm_connector_funcs
1096 nouveau_connector_funcs = {
1097 	.dpms = drm_helper_connector_dpms,
1098 	.reset = nouveau_conn_reset,
1099 	.detect = nouveau_connector_detect,
1100 	.force = nouveau_connector_force,
1101 	.fill_modes = drm_helper_probe_single_connector_modes,
1102 	.set_property = nouveau_connector_set_property,
1103 	.destroy = nouveau_connector_destroy,
1104 	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1105 	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1106 	.atomic_set_property = nouveau_conn_atomic_set_property,
1107 	.atomic_get_property = nouveau_conn_atomic_get_property,
1108 	.late_register = nouveau_connector_late_register,
1109 	.early_unregister = nouveau_connector_early_unregister,
1110 };
1111 
1112 static const struct drm_connector_funcs
1113 nouveau_connector_funcs_lvds = {
1114 	.dpms = drm_helper_connector_dpms,
1115 	.reset = nouveau_conn_reset,
1116 	.detect = nouveau_connector_detect_lvds,
1117 	.force = nouveau_connector_force,
1118 	.fill_modes = drm_helper_probe_single_connector_modes,
1119 	.set_property = nouveau_connector_set_property,
1120 	.destroy = nouveau_connector_destroy,
1121 	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1122 	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1123 	.atomic_set_property = nouveau_conn_atomic_set_property,
1124 	.atomic_get_property = nouveau_conn_atomic_get_property,
1125 	.late_register = nouveau_connector_late_register,
1126 	.early_unregister = nouveau_connector_early_unregister,
1127 };
1128 
1129 void
1130 nouveau_connector_hpd(struct drm_connector *connector)
1131 {
1132 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1133 	u32 mask = drm_connector_mask(connector);
1134 
1135 	mutex_lock(&drm->hpd_lock);
1136 	if (!(drm->hpd_pending & mask)) {
1137 		drm->hpd_pending |= mask;
1138 		schedule_work(&drm->hpd_work);
1139 	}
1140 	mutex_unlock(&drm->hpd_lock);
1141 }
1142 
1143 static int
1144 nouveau_connector_hotplug(struct nvif_notify *notify)
1145 {
1146 	struct nouveau_connector *nv_connector =
1147 		container_of(notify, typeof(*nv_connector), hpd);
1148 	struct drm_connector *connector = &nv_connector->base;
1149 	struct drm_device *dev = connector->dev;
1150 	struct nouveau_drm *drm = nouveau_drm(dev);
1151 	const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1152 	bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1153 
1154 	if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1155 		nouveau_dp_irq(drm, nv_connector);
1156 		return NVIF_NOTIFY_KEEP;
1157 	}
1158 
1159 	NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", connector->name);
1160 	nouveau_connector_hpd(connector);
1161 
1162 	return NVIF_NOTIFY_KEEP;
1163 }
1164 
1165 static ssize_t
1166 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1167 {
1168 	struct nouveau_connector *nv_connector =
1169 		container_of(obj, typeof(*nv_connector), aux);
1170 	struct nouveau_encoder *nv_encoder;
1171 	struct nvkm_i2c_aux *aux;
1172 	u8 size = msg->size;
1173 	int ret;
1174 
1175 	nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1176 	if (!nv_encoder || !(aux = nv_encoder->aux))
1177 		return -ENODEV;
1178 	if (WARN_ON(msg->size > 16))
1179 		return -E2BIG;
1180 
1181 	ret = nvkm_i2c_aux_acquire(aux);
1182 	if (ret)
1183 		return ret;
1184 
1185 	ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1186 				msg->buffer, &size);
1187 	nvkm_i2c_aux_release(aux);
1188 	if (ret >= 0) {
1189 		msg->reply = ret;
1190 		return size;
1191 	}
1192 
1193 	return ret;
1194 }
1195 
1196 static int
1197 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1198 {
1199 	switch (dcb) {
1200 	case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1201 	case DCB_CONNECTOR_TV_0     :
1202 	case DCB_CONNECTOR_TV_1     :
1203 	case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1204 	case DCB_CONNECTOR_DMS59_0  :
1205 	case DCB_CONNECTOR_DMS59_1  :
1206 	case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1207 	case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1208 	case DCB_CONNECTOR_LVDS     :
1209 	case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1210 	case DCB_CONNECTOR_DMS59_DP0:
1211 	case DCB_CONNECTOR_DMS59_DP1:
1212 	case DCB_CONNECTOR_DP       :
1213 	case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1214 	case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1215 	case DCB_CONNECTOR_HDMI_0   :
1216 	case DCB_CONNECTOR_HDMI_1   :
1217 	case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1218 	case DCB_CONNECTOR_WFD	    : return DRM_MODE_CONNECTOR_VIRTUAL;
1219 	default:
1220 		break;
1221 	}
1222 
1223 	return DRM_MODE_CONNECTOR_Unknown;
1224 }
1225 
1226 struct drm_connector *
1227 nouveau_connector_create(struct drm_device *dev,
1228 			 const struct dcb_output *dcbe)
1229 {
1230 	const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1231 	struct nouveau_drm *drm = nouveau_drm(dev);
1232 	struct nouveau_display *disp = nouveau_display(dev);
1233 	struct nouveau_connector *nv_connector = NULL;
1234 	struct drm_connector *connector;
1235 	struct drm_connector_list_iter conn_iter;
1236 	char aux_name[48] = {0};
1237 	int index = dcbe->connector;
1238 	int type, ret = 0;
1239 	bool dummy;
1240 
1241 	drm_connector_list_iter_begin(dev, &conn_iter);
1242 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1243 		nv_connector = nouveau_connector(connector);
1244 		if (nv_connector->index == index) {
1245 			drm_connector_list_iter_end(&conn_iter);
1246 			return connector;
1247 		}
1248 	}
1249 	drm_connector_list_iter_end(&conn_iter);
1250 
1251 	nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1252 	if (!nv_connector)
1253 		return ERR_PTR(-ENOMEM);
1254 
1255 	connector = &nv_connector->base;
1256 	nv_connector->index = index;
1257 
1258 	/* attempt to parse vbios connector type and hotplug gpio */
1259 	nv_connector->dcb = olddcb_conn(dev, index);
1260 	if (nv_connector->dcb) {
1261 		u32 entry = ROM16(nv_connector->dcb[0]);
1262 		if (olddcb_conntab(dev)[3] >= 4)
1263 			entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1264 
1265 		nv_connector->type = nv_connector->dcb[0];
1266 		if (drm_conntype_from_dcb(nv_connector->type) ==
1267 					  DRM_MODE_CONNECTOR_Unknown) {
1268 			NV_WARN(drm, "unknown connector type %02x\n",
1269 				nv_connector->type);
1270 			nv_connector->type = DCB_CONNECTOR_NONE;
1271 		}
1272 
1273 		/* Gigabyte NX85T */
1274 		if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1275 			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1276 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1277 		}
1278 
1279 		/* Gigabyte GV-NX86T512H */
1280 		if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1281 			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1282 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1283 		}
1284 	} else {
1285 		nv_connector->type = DCB_CONNECTOR_NONE;
1286 	}
1287 
1288 	/* no vbios data, or an unknown dcb connector type - attempt to
1289 	 * figure out something suitable ourselves
1290 	 */
1291 	if (nv_connector->type == DCB_CONNECTOR_NONE) {
1292 		struct nouveau_drm *drm = nouveau_drm(dev);
1293 		struct dcb_table *dcbt = &drm->vbios.dcb;
1294 		u32 encoders = 0;
1295 		int i;
1296 
1297 		for (i = 0; i < dcbt->entries; i++) {
1298 			if (dcbt->entry[i].connector == nv_connector->index)
1299 				encoders |= (1 << dcbt->entry[i].type);
1300 		}
1301 
1302 		if (encoders & (1 << DCB_OUTPUT_DP)) {
1303 			if (encoders & (1 << DCB_OUTPUT_TMDS))
1304 				nv_connector->type = DCB_CONNECTOR_DP;
1305 			else
1306 				nv_connector->type = DCB_CONNECTOR_eDP;
1307 		} else
1308 		if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1309 			if (encoders & (1 << DCB_OUTPUT_ANALOG))
1310 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1311 			else
1312 				nv_connector->type = DCB_CONNECTOR_DVI_D;
1313 		} else
1314 		if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1315 			nv_connector->type = DCB_CONNECTOR_VGA;
1316 		} else
1317 		if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1318 			nv_connector->type = DCB_CONNECTOR_LVDS;
1319 		} else
1320 		if (encoders & (1 << DCB_OUTPUT_TV)) {
1321 			nv_connector->type = DCB_CONNECTOR_TV_0;
1322 		}
1323 	}
1324 
1325 	switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1326 	case DRM_MODE_CONNECTOR_LVDS:
1327 		ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1328 		if (ret) {
1329 			NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1330 			kfree(nv_connector);
1331 			return ERR_PTR(ret);
1332 		}
1333 
1334 		funcs = &nouveau_connector_funcs_lvds;
1335 		break;
1336 	case DRM_MODE_CONNECTOR_DisplayPort:
1337 	case DRM_MODE_CONNECTOR_eDP:
1338 		nv_connector->aux.dev = connector->kdev;
1339 		nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1340 		snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1341 			 dcbe->hasht, dcbe->hashm);
1342 		nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1343 		ret = drm_dp_aux_register(&nv_connector->aux);
1344 		if (ret) {
1345 			NV_ERROR(drm, "failed to register aux channel\n");
1346 			kfree(nv_connector);
1347 			return ERR_PTR(ret);
1348 		}
1349 		funcs = &nouveau_connector_funcs;
1350 		break;
1351 	default:
1352 		funcs = &nouveau_connector_funcs;
1353 		break;
1354 	}
1355 
1356 	/* HDMI 3D support */
1357 	if ((disp->disp.object.oclass >= G82_DISP)
1358 	    && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1359 		|| (type == DRM_MODE_CONNECTOR_eDP)
1360 		|| (type == DRM_MODE_CONNECTOR_HDMIA)))
1361 		connector->stereo_allowed = true;
1362 
1363 	/* defaults, will get overridden in detect() */
1364 	connector->interlace_allowed = false;
1365 	connector->doublescan_allowed = false;
1366 
1367 	drm_connector_init(dev, connector, funcs, type);
1368 	drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1369 
1370 	connector->funcs->reset(connector);
1371 	nouveau_conn_attach_properties(connector);
1372 
1373 	/* Default scaling mode */
1374 	switch (nv_connector->type) {
1375 	case DCB_CONNECTOR_LVDS:
1376 	case DCB_CONNECTOR_LVDS_SPWG:
1377 	case DCB_CONNECTOR_eDP:
1378 		/* see note in nouveau_connector_set_property() */
1379 		if (disp->disp.object.oclass < NV50_DISP) {
1380 			nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1381 			break;
1382 		}
1383 		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1384 		break;
1385 	default:
1386 		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1387 		break;
1388 	}
1389 
1390 	/* dithering properties */
1391 	switch (nv_connector->type) {
1392 	case DCB_CONNECTOR_TV_0:
1393 	case DCB_CONNECTOR_TV_1:
1394 	case DCB_CONNECTOR_TV_3:
1395 	case DCB_CONNECTOR_VGA:
1396 		break;
1397 	default:
1398 		nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1399 		break;
1400 	}
1401 
1402 	switch (type) {
1403 	case DRM_MODE_CONNECTOR_DisplayPort:
1404 	case DRM_MODE_CONNECTOR_eDP:
1405 		drm_dp_cec_register_connector(&nv_connector->aux, connector);
1406 		break;
1407 	}
1408 
1409 	ret = nvif_notify_ctor(&disp->disp.object, "kmsHotplug",
1410 			       nouveau_connector_hotplug,
1411 			       true, NV04_DISP_NTFY_CONN,
1412 			       &(struct nvif_notify_conn_req_v0) {
1413 				.mask = NVIF_NOTIFY_CONN_V0_ANY,
1414 				.conn = index,
1415 			       },
1416 			       sizeof(struct nvif_notify_conn_req_v0),
1417 			       sizeof(struct nvif_notify_conn_rep_v0),
1418 			       &nv_connector->hpd);
1419 	if (ret)
1420 		connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1421 	else
1422 		connector->polled = DRM_CONNECTOR_POLL_HPD;
1423 
1424 	drm_connector_register(connector);
1425 	return connector;
1426 }
1427