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 			break;
161 		case DRM_MODE_SCALE_FULLSCREEN:
162 		case DRM_MODE_SCALE_CENTER:
163 		case DRM_MODE_SCALE_ASPECT:
164 			break;
165 		default:
166 			return -EINVAL;
167 		}
168 
169 		if (asyc->scaler.mode != val) {
170 			asyc->scaler.mode = val;
171 			asyc->set.scaler = true;
172 		}
173 	} else
174 	if (property == disp->underscan_property) {
175 		if (asyc->scaler.underscan.mode != val) {
176 			asyc->scaler.underscan.mode = val;
177 			asyc->set.scaler = true;
178 		}
179 	} else
180 	if (property == disp->underscan_hborder_property) {
181 		if (asyc->scaler.underscan.hborder != val) {
182 			asyc->scaler.underscan.hborder = val;
183 			asyc->set.scaler = true;
184 		}
185 	} else
186 	if (property == disp->underscan_vborder_property) {
187 		if (asyc->scaler.underscan.vborder != val) {
188 			asyc->scaler.underscan.vborder = val;
189 			asyc->set.scaler = true;
190 		}
191 	} else
192 	if (property == disp->dithering_mode) {
193 		if (asyc->dither.mode != val) {
194 			asyc->dither.mode = val;
195 			asyc->set.dither = true;
196 		}
197 	} else
198 	if (property == disp->dithering_depth) {
199 		if (asyc->dither.mode != val) {
200 			asyc->dither.depth = val;
201 			asyc->set.dither = true;
202 		}
203 	} else
204 	if (property == disp->vibrant_hue_property) {
205 		if (asyc->procamp.vibrant_hue != val) {
206 			asyc->procamp.vibrant_hue = val;
207 			asyc->set.procamp = true;
208 		}
209 	} else
210 	if (property == disp->color_vibrance_property) {
211 		if (asyc->procamp.color_vibrance != val) {
212 			asyc->procamp.color_vibrance = val;
213 			asyc->set.procamp = true;
214 		}
215 	} else {
216 		return -EINVAL;
217 	}
218 
219 	return 0;
220 }
221 
222 void
223 nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
224 				  struct drm_connector_state *state)
225 {
226 	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
227 	__drm_atomic_helper_connector_destroy_state(&asyc->state);
228 	kfree(asyc);
229 }
230 
231 struct drm_connector_state *
232 nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
233 {
234 	struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
235 	struct nouveau_conn_atom *asyc;
236 	if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
237 		return NULL;
238 	__drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
239 	asyc->dither = armc->dither;
240 	asyc->scaler = armc->scaler;
241 	asyc->procamp = armc->procamp;
242 	asyc->set.mask = 0;
243 	return &asyc->state;
244 }
245 
246 void
247 nouveau_conn_reset(struct drm_connector *connector)
248 {
249 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
250 	struct nouveau_conn_atom *asyc;
251 
252 	if (drm_drv_uses_atomic_modeset(connector->dev)) {
253 		if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
254 			return;
255 
256 		if (connector->state)
257 			nouveau_conn_atomic_destroy_state(connector,
258 							  connector->state);
259 
260 		__drm_atomic_helper_connector_reset(connector, &asyc->state);
261 	} else {
262 		asyc = &nv_connector->properties_state;
263 	}
264 
265 	asyc->dither.mode = DITHERING_MODE_AUTO;
266 	asyc->dither.depth = DITHERING_DEPTH_AUTO;
267 	asyc->scaler.mode = DRM_MODE_SCALE_NONE;
268 	asyc->scaler.underscan.mode = UNDERSCAN_OFF;
269 	asyc->procamp.color_vibrance = 150;
270 	asyc->procamp.vibrant_hue = 90;
271 
272 	if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
273 		switch (connector->connector_type) {
274 		case DRM_MODE_CONNECTOR_LVDS:
275 			/* See note in nouveau_conn_atomic_set_property(). */
276 			asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
277 			break;
278 		default:
279 			break;
280 		}
281 	}
282 }
283 
284 void
285 nouveau_conn_attach_properties(struct drm_connector *connector)
286 {
287 	struct drm_device *dev = connector->dev;
288 	struct nouveau_display *disp = nouveau_display(dev);
289 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
290 	struct nouveau_conn_atom *armc;
291 
292 	if (drm_drv_uses_atomic_modeset(connector->dev))
293 		armc = nouveau_conn_atom(connector->state);
294 	else
295 		armc = &nv_connector->properties_state;
296 
297 	/* Init DVI-I specific properties. */
298 	if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
299 		drm_object_attach_property(&connector->base, dev->mode_config.
300 					   dvi_i_subconnector_property, 0);
301 
302 	/* Add overscan compensation options to digital outputs. */
303 	if (disp->underscan_property &&
304 	    (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
305 	     connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
306 	     connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
307 	     connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
308 		drm_object_attach_property(&connector->base,
309 					   disp->underscan_property,
310 					   UNDERSCAN_OFF);
311 		drm_object_attach_property(&connector->base,
312 					   disp->underscan_hborder_property, 0);
313 		drm_object_attach_property(&connector->base,
314 					   disp->underscan_vborder_property, 0);
315 	}
316 
317 	/* Add hue and saturation options. */
318 	if (disp->vibrant_hue_property)
319 		drm_object_attach_property(&connector->base,
320 					   disp->vibrant_hue_property,
321 					   armc->procamp.vibrant_hue);
322 	if (disp->color_vibrance_property)
323 		drm_object_attach_property(&connector->base,
324 					   disp->color_vibrance_property,
325 					   armc->procamp.color_vibrance);
326 
327 	/* Scaling mode property. */
328 	switch (connector->connector_type) {
329 	case DRM_MODE_CONNECTOR_TV:
330 		break;
331 	case DRM_MODE_CONNECTOR_VGA:
332 		if (disp->disp.object.oclass < NV50_DISP)
333 			break; /* Can only scale on DFPs. */
334 		fallthrough;
335 	default:
336 		drm_object_attach_property(&connector->base, dev->mode_config.
337 					   scaling_mode_property,
338 					   armc->scaler.mode);
339 		break;
340 	}
341 
342 	/* Dithering properties. */
343 	switch (connector->connector_type) {
344 	case DRM_MODE_CONNECTOR_TV:
345 	case DRM_MODE_CONNECTOR_VGA:
346 		break;
347 	default:
348 		if (disp->dithering_mode) {
349 			drm_object_attach_property(&connector->base,
350 						   disp->dithering_mode,
351 						   armc->dither.mode);
352 		}
353 		if (disp->dithering_depth) {
354 			drm_object_attach_property(&connector->base,
355 						   disp->dithering_depth,
356 						   armc->dither.depth);
357 		}
358 		break;
359 	}
360 }
361 
362 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
363 int nouveau_tv_disable = 0;
364 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
365 
366 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
367 int nouveau_ignorelid = 0;
368 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
369 
370 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
371 int nouveau_duallink = 1;
372 module_param_named(duallink, nouveau_duallink, int, 0400);
373 
374 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
375 int nouveau_hdmimhz = 0;
376 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
377 
378 struct nouveau_encoder *
379 find_encoder(struct drm_connector *connector, int type)
380 {
381 	struct nouveau_encoder *nv_encoder;
382 	struct drm_encoder *enc;
383 
384 	drm_connector_for_each_possible_encoder(connector, enc) {
385 		nv_encoder = nouveau_encoder(enc);
386 
387 		if (type == DCB_OUTPUT_ANY ||
388 		    (nv_encoder->dcb && nv_encoder->dcb->type == type))
389 			return nv_encoder;
390 	}
391 
392 	return NULL;
393 }
394 
395 static void
396 nouveau_connector_destroy(struct drm_connector *connector)
397 {
398 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
399 	nvif_notify_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 	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 pci_dev *pdev = to_pci_dev(dev->dev);
415 	struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
416 	struct drm_encoder *encoder;
417 	int ret;
418 	bool switcheroo_ddc = false;
419 
420 	drm_connector_for_each_possible_encoder(connector, encoder) {
421 		nv_encoder = nouveau_encoder(encoder);
422 
423 		switch (nv_encoder->dcb->type) {
424 		case DCB_OUTPUT_DP:
425 			ret = nouveau_dp_detect(nouveau_connector(connector),
426 						nv_encoder);
427 			if (ret == NOUVEAU_DP_MST)
428 				return NULL;
429 			else if (ret == NOUVEAU_DP_SST)
430 				found = nv_encoder;
431 
432 			break;
433 		case DCB_OUTPUT_LVDS:
434 			switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
435 					    VGA_SWITCHEROO_CAN_SWITCH_DDC);
436 			fallthrough;
437 		default:
438 			if (!nv_encoder->i2c)
439 				break;
440 
441 			if (switcheroo_ddc)
442 				vga_switcheroo_lock_ddc(pdev);
443 			if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
444 				found = nv_encoder;
445 			if (switcheroo_ddc)
446 				vga_switcheroo_unlock_ddc(pdev);
447 
448 			break;
449 		}
450 		if (found)
451 			break;
452 	}
453 
454 	return found;
455 }
456 
457 static struct nouveau_encoder *
458 nouveau_connector_of_detect(struct drm_connector *connector)
459 {
460 #ifdef __powerpc__
461 	struct drm_device *dev = connector->dev;
462 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
463 	struct nouveau_encoder *nv_encoder;
464 	struct pci_dev *pdev = to_pci_dev(dev->dev);
465 	struct device_node *cn, *dn = pci_device_to_OF_node(pdev);
466 
467 	if (!dn ||
468 	    !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
469 	      (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
470 		return NULL;
471 
472 	for_each_child_of_node(dn, cn) {
473 		const char *name = of_get_property(cn, "name", NULL);
474 		const void *edid = of_get_property(cn, "EDID", NULL);
475 		int idx = name ? name[strlen(name) - 1] - 'A' : 0;
476 
477 		if (nv_encoder->dcb->i2c_index == idx && edid) {
478 			nv_connector->edid =
479 				kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
480 			of_node_put(cn);
481 			return nv_encoder;
482 		}
483 	}
484 #endif
485 	return NULL;
486 }
487 
488 static void
489 nouveau_connector_set_encoder(struct drm_connector *connector,
490 			      struct nouveau_encoder *nv_encoder)
491 {
492 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
493 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
494 	struct drm_device *dev = connector->dev;
495 	struct pci_dev *pdev = to_pci_dev(dev->dev);
496 
497 	if (nv_connector->detected_encoder == nv_encoder)
498 		return;
499 	nv_connector->detected_encoder = nv_encoder;
500 
501 	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
502 		if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
503 			connector->interlace_allowed =
504 				nv_encoder->caps.dp_interlace;
505 		else
506 			connector->interlace_allowed = true;
507 		connector->doublescan_allowed = true;
508 	} else
509 	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
510 	    nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
511 		connector->doublescan_allowed = false;
512 		connector->interlace_allowed = false;
513 	} else {
514 		connector->doublescan_allowed = true;
515 		if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
516 		    (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
517 		     (pdev->device & 0x0ff0) != 0x0100 &&
518 		     (pdev->device & 0x0ff0) != 0x0150))
519 			/* HW is broken */
520 			connector->interlace_allowed = false;
521 		else
522 			connector->interlace_allowed = true;
523 	}
524 
525 	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
526 		drm_object_property_set_value(&connector->base,
527 			dev->mode_config.dvi_i_subconnector_property,
528 			nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
529 			DRM_MODE_SUBCONNECTOR_DVID :
530 			DRM_MODE_SUBCONNECTOR_DVIA);
531 	}
532 }
533 
534 static void
535 nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
536 			   struct edid *edid)
537 {
538 	if (nv_connector->edid != edid) {
539 		struct edid *old_edid = nv_connector->edid;
540 
541 		drm_connector_update_edid_property(&nv_connector->base, edid);
542 		kfree(old_edid);
543 		nv_connector->edid = edid;
544 	}
545 }
546 
547 static enum drm_connector_status
548 nouveau_connector_detect(struct drm_connector *connector, bool force)
549 {
550 	struct drm_device *dev = connector->dev;
551 	struct nouveau_drm *drm = nouveau_drm(dev);
552 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
553 	struct nouveau_encoder *nv_encoder = NULL;
554 	struct nouveau_encoder *nv_partner;
555 	struct i2c_adapter *i2c;
556 	int type;
557 	int ret;
558 	enum drm_connector_status conn_status = connector_status_disconnected;
559 
560 	/* Outputs are only polled while runtime active, so resuming the
561 	 * device here is unnecessary (and would deadlock upon runtime suspend
562 	 * because it waits for polling to finish). We do however, want to
563 	 * prevent the autosuspend timer from elapsing during this operation
564 	 * if possible.
565 	 */
566 	if (drm_kms_helper_is_poll_worker()) {
567 		pm_runtime_get_noresume(dev->dev);
568 	} else {
569 		ret = pm_runtime_get_sync(dev->dev);
570 		if (ret < 0 && ret != -EACCES) {
571 			pm_runtime_put_autosuspend(dev->dev);
572 			nouveau_connector_set_edid(nv_connector, NULL);
573 			return conn_status;
574 		}
575 	}
576 
577 	nv_encoder = nouveau_connector_ddc_detect(connector);
578 	if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
579 		struct edid *new_edid;
580 
581 		if ((vga_switcheroo_handler_flags() &
582 		     VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
583 		    nv_connector->type == DCB_CONNECTOR_LVDS)
584 			new_edid = drm_get_edid_switcheroo(connector, i2c);
585 		else
586 			new_edid = drm_get_edid(connector, i2c);
587 
588 		nouveau_connector_set_edid(nv_connector, new_edid);
589 		if (!nv_connector->edid) {
590 			NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
591 				 connector->name);
592 			goto detect_analog;
593 		}
594 
595 		/* Override encoder type for DVI-I based on whether EDID
596 		 * says the display is digital or analog, both use the
597 		 * same i2c channel so the value returned from ddc_detect
598 		 * isn't necessarily correct.
599 		 */
600 		nv_partner = NULL;
601 		if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
602 			nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
603 		if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
604 			nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
605 
606 		if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
607 				    nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
608 				   (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
609 				    nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
610 			if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
611 				type = DCB_OUTPUT_TMDS;
612 			else
613 				type = DCB_OUTPUT_ANALOG;
614 
615 			nv_encoder = find_encoder(connector, type);
616 		}
617 
618 		nouveau_connector_set_encoder(connector, nv_encoder);
619 		conn_status = connector_status_connected;
620 		drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
621 		goto out;
622 	} else {
623 		nouveau_connector_set_edid(nv_connector, NULL);
624 	}
625 
626 	nv_encoder = nouveau_connector_of_detect(connector);
627 	if (nv_encoder) {
628 		nouveau_connector_set_encoder(connector, nv_encoder);
629 		conn_status = connector_status_connected;
630 		goto out;
631 	}
632 
633 detect_analog:
634 	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
635 	if (!nv_encoder && !nouveau_tv_disable)
636 		nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
637 	if (nv_encoder && force) {
638 		struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
639 		const struct drm_encoder_helper_funcs *helper =
640 						encoder->helper_private;
641 
642 		if (helper->detect(encoder, connector) ==
643 						connector_status_connected) {
644 			nouveau_connector_set_encoder(connector, nv_encoder);
645 			conn_status = connector_status_connected;
646 			goto out;
647 		}
648 	}
649 
650  out:
651 	if (!nv_connector->edid)
652 		drm_dp_cec_unset_edid(&nv_connector->aux);
653 
654 	pm_runtime_mark_last_busy(dev->dev);
655 	pm_runtime_put_autosuspend(dev->dev);
656 
657 	return conn_status;
658 }
659 
660 static enum drm_connector_status
661 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
662 {
663 	struct drm_device *dev = connector->dev;
664 	struct nouveau_drm *drm = nouveau_drm(dev);
665 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
666 	struct nouveau_encoder *nv_encoder = NULL;
667 	struct edid *edid = NULL;
668 	enum drm_connector_status status = connector_status_disconnected;
669 
670 	nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
671 	if (!nv_encoder)
672 		goto out;
673 
674 	/* Try retrieving EDID via DDC */
675 	if (!drm->vbios.fp_no_ddc) {
676 		status = nouveau_connector_detect(connector, force);
677 		if (status == connector_status_connected) {
678 			edid = nv_connector->edid;
679 			goto out;
680 		}
681 	}
682 
683 	/* On some laptops (Sony, i'm looking at you) there appears to
684 	 * be no direct way of accessing the panel's EDID.  The only
685 	 * option available to us appears to be to ask ACPI for help..
686 	 *
687 	 * It's important this check's before trying straps, one of the
688 	 * said manufacturer's laptops are configured in such a way
689 	 * the nouveau decides an entry in the VBIOS FP mode table is
690 	 * valid - it's not (rh#613284)
691 	 */
692 	if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
693 		edid = nouveau_acpi_edid(dev, connector);
694 		if (edid) {
695 			status = connector_status_connected;
696 			goto out;
697 		}
698 	}
699 
700 	/* If no EDID found above, and the VBIOS indicates a hardcoded
701 	 * modeline is avalilable for the panel, set it as the panel's
702 	 * native mode and exit.
703 	 */
704 	if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
705 	    nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
706 		status = connector_status_connected;
707 		goto out;
708 	}
709 
710 	/* Still nothing, some VBIOS images have a hardcoded EDID block
711 	 * stored for the panel stored in them.
712 	 */
713 	if (!drm->vbios.fp_no_ddc) {
714 		edid = (struct edid *)nouveau_bios_embedded_edid(dev);
715 		if (edid) {
716 			edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
717 			if (edid)
718 				status = connector_status_connected;
719 		}
720 	}
721 
722 out:
723 #if defined(CONFIG_ACPI_BUTTON) || \
724 	(defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
725 	if (status == connector_status_connected &&
726 	    !nouveau_ignorelid && !acpi_lid_open())
727 		status = connector_status_unknown;
728 #endif
729 
730 	nouveau_connector_set_edid(nv_connector, edid);
731 	nouveau_connector_set_encoder(connector, nv_encoder);
732 	return status;
733 }
734 
735 static void
736 nouveau_connector_force(struct drm_connector *connector)
737 {
738 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
739 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
740 	struct nouveau_encoder *nv_encoder;
741 	int type;
742 
743 	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
744 		if (connector->force == DRM_FORCE_ON_DIGITAL)
745 			type = DCB_OUTPUT_TMDS;
746 		else
747 			type = DCB_OUTPUT_ANALOG;
748 	} else
749 		type = DCB_OUTPUT_ANY;
750 
751 	nv_encoder = find_encoder(connector, type);
752 	if (!nv_encoder) {
753 		NV_ERROR(drm, "can't find encoder to force %s on!\n",
754 			 connector->name);
755 		connector->status = connector_status_disconnected;
756 		return;
757 	}
758 
759 	nouveau_connector_set_encoder(connector, nv_encoder);
760 }
761 
762 static int
763 nouveau_connector_set_property(struct drm_connector *connector,
764 			       struct drm_property *property, uint64_t value)
765 {
766 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
767 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
768 	struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
769 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
770 	int ret;
771 
772 	ret = connector->funcs->atomic_set_property(&nv_connector->base,
773 						    &asyc->state,
774 						    property, value);
775 	if (ret) {
776 		if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
777 			return get_slave_funcs(encoder)->set_property(
778 				encoder, connector, property, value);
779 		return ret;
780 	}
781 
782 	nv_connector->scaling_mode = asyc->scaler.mode;
783 	nv_connector->dithering_mode = asyc->dither.mode;
784 
785 	if (connector->encoder && connector->encoder->crtc) {
786 		ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
787 					      &connector->encoder->crtc->mode,
788 					       connector->encoder->crtc->x,
789 					       connector->encoder->crtc->y,
790 					       NULL);
791 		if (!ret)
792 			return -EINVAL;
793 	}
794 
795 	return 0;
796 }
797 
798 struct moderec {
799 	int hdisplay;
800 	int vdisplay;
801 };
802 
803 static struct moderec scaler_modes[] = {
804 	{ 1920, 1200 },
805 	{ 1920, 1080 },
806 	{ 1680, 1050 },
807 	{ 1600, 1200 },
808 	{ 1400, 1050 },
809 	{ 1280, 1024 },
810 	{ 1280, 960 },
811 	{ 1152, 864 },
812 	{ 1024, 768 },
813 	{ 800, 600 },
814 	{ 720, 400 },
815 	{ 640, 480 },
816 	{ 640, 400 },
817 	{ 640, 350 },
818 	{}
819 };
820 
821 static int
822 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
823 {
824 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
825 	struct drm_display_mode *native = nv_connector->native_mode, *m;
826 	struct drm_device *dev = connector->dev;
827 	struct moderec *mode = &scaler_modes[0];
828 	int modes = 0;
829 
830 	if (!native)
831 		return 0;
832 
833 	while (mode->hdisplay) {
834 		if (mode->hdisplay <= native->hdisplay &&
835 		    mode->vdisplay <= native->vdisplay &&
836 		    (mode->hdisplay != native->hdisplay ||
837 		     mode->vdisplay != native->vdisplay)) {
838 			m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
839 					 drm_mode_vrefresh(native), false,
840 					 false, false);
841 			if (!m)
842 				continue;
843 
844 			drm_mode_probed_add(connector, m);
845 			modes++;
846 		}
847 
848 		mode++;
849 	}
850 
851 	return modes;
852 }
853 
854 static void
855 nouveau_connector_detect_depth(struct drm_connector *connector)
856 {
857 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
858 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
859 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
860 	struct nvbios *bios = &drm->vbios;
861 	struct drm_display_mode *mode = nv_connector->native_mode;
862 	bool duallink;
863 
864 	/* if the edid is feeling nice enough to provide this info, use it */
865 	if (nv_connector->edid && connector->display_info.bpc)
866 		return;
867 
868 	/* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
869 	if (nv_connector->type == DCB_CONNECTOR_eDP) {
870 		connector->display_info.bpc = 6;
871 		return;
872 	}
873 
874 	/* we're out of options unless we're LVDS, default to 8bpc */
875 	if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
876 		connector->display_info.bpc = 8;
877 		return;
878 	}
879 
880 	connector->display_info.bpc = 6;
881 
882 	/* LVDS: panel straps */
883 	if (bios->fp_no_ddc) {
884 		if (bios->fp.if_is_24bit)
885 			connector->display_info.bpc = 8;
886 		return;
887 	}
888 
889 	/* LVDS: DDC panel, need to first determine the number of links to
890 	 * know which if_is_24bit flag to check...
891 	 */
892 	if (nv_connector->edid &&
893 	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
894 		duallink = ((u8 *)nv_connector->edid)[121] == 2;
895 	else
896 		duallink = mode->clock >= bios->fp.duallink_transition_clk;
897 
898 	if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
899 	    ( duallink && (bios->fp.strapless_is_24bit & 2)))
900 		connector->display_info.bpc = 8;
901 }
902 
903 static int
904 nouveau_connector_late_register(struct drm_connector *connector)
905 {
906 	int ret;
907 
908 	ret = nouveau_backlight_init(connector);
909 	if (ret)
910 		return ret;
911 
912 	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
913 	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
914 		ret = drm_dp_aux_register(&nouveau_connector(connector)->aux);
915 		if (ret)
916 			goto backlight_fini;
917 	}
918 
919 	return 0;
920 backlight_fini:
921 	nouveau_backlight_fini(connector);
922 	return ret;
923 }
924 
925 static void
926 nouveau_connector_early_unregister(struct drm_connector *connector)
927 {
928 	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
929 	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
930 		drm_dp_aux_unregister(&nouveau_connector(connector)->aux);
931 
932 	nouveau_backlight_fini(connector);
933 }
934 
935 static int
936 nouveau_connector_get_modes(struct drm_connector *connector)
937 {
938 	struct drm_device *dev = connector->dev;
939 	struct nouveau_drm *drm = nouveau_drm(dev);
940 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
941 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
942 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
943 	int ret = 0;
944 
945 	/* destroy the native mode, the attached monitor could have changed.
946 	 */
947 	if (nv_connector->native_mode) {
948 		drm_mode_destroy(dev, nv_connector->native_mode);
949 		nv_connector->native_mode = NULL;
950 	}
951 
952 	if (nv_connector->edid)
953 		ret = drm_add_edid_modes(connector, nv_connector->edid);
954 	else
955 	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
956 	    (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
957 	     drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
958 		struct drm_display_mode mode;
959 
960 		nouveau_bios_fp_mode(dev, &mode);
961 		nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
962 	}
963 
964 	/* Determine display colour depth for everything except LVDS now,
965 	 * DP requires this before mode_valid() is called.
966 	 */
967 	if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
968 		nouveau_connector_detect_depth(connector);
969 
970 	/* Find the native mode if this is a digital panel, if we didn't
971 	 * find any modes through DDC previously add the native mode to
972 	 * the list of modes.
973 	 */
974 	if (!nv_connector->native_mode)
975 		nv_connector->native_mode = nouveau_conn_native_mode(connector);
976 	if (ret == 0 && nv_connector->native_mode) {
977 		struct drm_display_mode *mode;
978 
979 		mode = drm_mode_duplicate(dev, nv_connector->native_mode);
980 		drm_mode_probed_add(connector, mode);
981 		ret = 1;
982 	}
983 
984 	/* Determine LVDS colour depth, must happen after determining
985 	 * "native" mode as some VBIOS tables require us to use the
986 	 * pixel clock as part of the lookup...
987 	 */
988 	if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
989 		nouveau_connector_detect_depth(connector);
990 
991 	if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
992 		ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
993 
994 	if (nv_connector->type == DCB_CONNECTOR_LVDS ||
995 	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
996 	    nv_connector->type == DCB_CONNECTOR_eDP)
997 		ret += nouveau_connector_scaler_modes_add(connector);
998 
999 	return ret;
1000 }
1001 
1002 static unsigned
1003 get_tmds_link_bandwidth(struct drm_connector *connector)
1004 {
1005 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1006 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1007 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1008 	struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
1009 	struct drm_display_info *info = NULL;
1010 	unsigned duallink_scale =
1011 		nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
1012 
1013 	if (drm_detect_hdmi_monitor(nv_connector->edid)) {
1014 		info = &nv_connector->base.display_info;
1015 		duallink_scale = 1;
1016 	}
1017 
1018 	if (info) {
1019 		if (nouveau_hdmimhz > 0)
1020 			return nouveau_hdmimhz * 1000;
1021 		/* Note: these limits are conservative, some Fermi's
1022 		 * can do 297 MHz. Unclear how this can be determined.
1023 		 */
1024 		if (drm->client.device.info.chipset >= 0x120) {
1025 			const int max_tmds_clock =
1026 				info->hdmi.scdc.scrambling.supported ?
1027 				594000 : 340000;
1028 			return info->max_tmds_clock ?
1029 				min(info->max_tmds_clock, max_tmds_clock) :
1030 				max_tmds_clock;
1031 		}
1032 		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1033 			return 297000;
1034 		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1035 			return 225000;
1036 	}
1037 
1038 	if (dcb->location != DCB_LOC_ON_CHIP ||
1039 	    drm->client.device.info.chipset >= 0x46)
1040 		return 165000 * duallink_scale;
1041 	else if (drm->client.device.info.chipset >= 0x40)
1042 		return 155000 * duallink_scale;
1043 	else if (drm->client.device.info.chipset >= 0x18)
1044 		return 135000 * duallink_scale;
1045 	else
1046 		return 112000 * duallink_scale;
1047 }
1048 
1049 static enum drm_mode_status
1050 nouveau_connector_mode_valid(struct drm_connector *connector,
1051 			     struct drm_display_mode *mode)
1052 {
1053 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1054 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1055 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1056 	unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1057 
1058 	switch (nv_encoder->dcb->type) {
1059 	case DCB_OUTPUT_LVDS:
1060 		if (nv_connector->native_mode &&
1061 		    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1062 		     mode->vdisplay > nv_connector->native_mode->vdisplay))
1063 			return MODE_PANEL;
1064 
1065 		min_clock = 0;
1066 		max_clock = 400000;
1067 		break;
1068 	case DCB_OUTPUT_TMDS:
1069 		max_clock = get_tmds_link_bandwidth(connector);
1070 		break;
1071 	case DCB_OUTPUT_ANALOG:
1072 		max_clock = nv_encoder->dcb->crtconf.maxfreq;
1073 		if (!max_clock)
1074 			max_clock = 350000;
1075 		break;
1076 	case DCB_OUTPUT_TV:
1077 		return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1078 	case DCB_OUTPUT_DP:
1079 		return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1080 	default:
1081 		BUG();
1082 		return MODE_BAD;
1083 	}
1084 
1085 	if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1086 		clock *= 2;
1087 
1088 	if (clock < min_clock)
1089 		return MODE_CLOCK_LOW;
1090 	if (clock > max_clock)
1091 		return MODE_CLOCK_HIGH;
1092 
1093 	return MODE_OK;
1094 }
1095 
1096 static struct drm_encoder *
1097 nouveau_connector_best_encoder(struct drm_connector *connector)
1098 {
1099 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1100 
1101 	if (nv_connector->detected_encoder)
1102 		return to_drm_encoder(nv_connector->detected_encoder);
1103 
1104 	return NULL;
1105 }
1106 
1107 static const struct drm_connector_helper_funcs
1108 nouveau_connector_helper_funcs = {
1109 	.get_modes = nouveau_connector_get_modes,
1110 	.mode_valid = nouveau_connector_mode_valid,
1111 	.best_encoder = nouveau_connector_best_encoder,
1112 };
1113 
1114 static const struct drm_connector_funcs
1115 nouveau_connector_funcs = {
1116 	.dpms = drm_helper_connector_dpms,
1117 	.reset = nouveau_conn_reset,
1118 	.detect = nouveau_connector_detect,
1119 	.force = nouveau_connector_force,
1120 	.fill_modes = drm_helper_probe_single_connector_modes,
1121 	.set_property = nouveau_connector_set_property,
1122 	.destroy = nouveau_connector_destroy,
1123 	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1124 	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1125 	.atomic_set_property = nouveau_conn_atomic_set_property,
1126 	.atomic_get_property = nouveau_conn_atomic_get_property,
1127 	.late_register = nouveau_connector_late_register,
1128 	.early_unregister = nouveau_connector_early_unregister,
1129 };
1130 
1131 static const struct drm_connector_funcs
1132 nouveau_connector_funcs_lvds = {
1133 	.dpms = drm_helper_connector_dpms,
1134 	.reset = nouveau_conn_reset,
1135 	.detect = nouveau_connector_detect_lvds,
1136 	.force = nouveau_connector_force,
1137 	.fill_modes = drm_helper_probe_single_connector_modes,
1138 	.set_property = nouveau_connector_set_property,
1139 	.destroy = nouveau_connector_destroy,
1140 	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1141 	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1142 	.atomic_set_property = nouveau_conn_atomic_set_property,
1143 	.atomic_get_property = nouveau_conn_atomic_get_property,
1144 	.late_register = nouveau_connector_late_register,
1145 	.early_unregister = nouveau_connector_early_unregister,
1146 };
1147 
1148 void
1149 nouveau_connector_hpd(struct drm_connector *connector)
1150 {
1151 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1152 	u32 mask = drm_connector_mask(connector);
1153 
1154 	mutex_lock(&drm->hpd_lock);
1155 	if (!(drm->hpd_pending & mask)) {
1156 		drm->hpd_pending |= mask;
1157 		schedule_work(&drm->hpd_work);
1158 	}
1159 	mutex_unlock(&drm->hpd_lock);
1160 }
1161 
1162 static int
1163 nouveau_connector_hotplug(struct nvif_notify *notify)
1164 {
1165 	struct nouveau_connector *nv_connector =
1166 		container_of(notify, typeof(*nv_connector), hpd);
1167 	struct drm_connector *connector = &nv_connector->base;
1168 	struct drm_device *dev = connector->dev;
1169 	struct nouveau_drm *drm = nouveau_drm(dev);
1170 	const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1171 	bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1172 
1173 	if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1174 		nouveau_dp_irq(drm, nv_connector);
1175 		return NVIF_NOTIFY_KEEP;
1176 	}
1177 
1178 	NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", connector->name);
1179 	nouveau_connector_hpd(connector);
1180 
1181 	return NVIF_NOTIFY_KEEP;
1182 }
1183 
1184 static ssize_t
1185 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1186 {
1187 	struct nouveau_connector *nv_connector =
1188 		container_of(obj, typeof(*nv_connector), aux);
1189 	struct nouveau_encoder *nv_encoder;
1190 	struct nvkm_i2c_aux *aux;
1191 	u8 size = msg->size;
1192 	int ret;
1193 
1194 	nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1195 	if (!nv_encoder || !(aux = nv_encoder->aux))
1196 		return -ENODEV;
1197 	if (WARN_ON(msg->size > 16))
1198 		return -E2BIG;
1199 
1200 	ret = nvkm_i2c_aux_acquire(aux);
1201 	if (ret)
1202 		return ret;
1203 
1204 	ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1205 				msg->buffer, &size);
1206 	nvkm_i2c_aux_release(aux);
1207 	if (ret >= 0) {
1208 		msg->reply = ret;
1209 		return size;
1210 	}
1211 
1212 	return ret;
1213 }
1214 
1215 static int
1216 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1217 {
1218 	switch (dcb) {
1219 	case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1220 	case DCB_CONNECTOR_TV_0     :
1221 	case DCB_CONNECTOR_TV_1     :
1222 	case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1223 	case DCB_CONNECTOR_DMS59_0  :
1224 	case DCB_CONNECTOR_DMS59_1  :
1225 	case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1226 	case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1227 	case DCB_CONNECTOR_LVDS     :
1228 	case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1229 	case DCB_CONNECTOR_DMS59_DP0:
1230 	case DCB_CONNECTOR_DMS59_DP1:
1231 	case DCB_CONNECTOR_DP       :
1232 	case DCB_CONNECTOR_mDP      :
1233 	case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1234 	case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1235 	case DCB_CONNECTOR_HDMI_0   :
1236 	case DCB_CONNECTOR_HDMI_1   :
1237 	case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1238 	case DCB_CONNECTOR_WFD	    : return DRM_MODE_CONNECTOR_VIRTUAL;
1239 	default:
1240 		break;
1241 	}
1242 
1243 	return DRM_MODE_CONNECTOR_Unknown;
1244 }
1245 
1246 struct drm_connector *
1247 nouveau_connector_create(struct drm_device *dev,
1248 			 const struct dcb_output *dcbe)
1249 {
1250 	const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1251 	struct nouveau_drm *drm = nouveau_drm(dev);
1252 	struct nouveau_display *disp = nouveau_display(dev);
1253 	struct nouveau_connector *nv_connector = NULL;
1254 	struct drm_connector *connector;
1255 	struct drm_connector_list_iter conn_iter;
1256 	char aux_name[48] = {0};
1257 	int index = dcbe->connector;
1258 	int type, ret = 0;
1259 	bool dummy;
1260 
1261 	drm_connector_list_iter_begin(dev, &conn_iter);
1262 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1263 		nv_connector = nouveau_connector(connector);
1264 		if (nv_connector->index == index) {
1265 			drm_connector_list_iter_end(&conn_iter);
1266 			return connector;
1267 		}
1268 	}
1269 	drm_connector_list_iter_end(&conn_iter);
1270 
1271 	nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1272 	if (!nv_connector)
1273 		return ERR_PTR(-ENOMEM);
1274 
1275 	connector = &nv_connector->base;
1276 	nv_connector->index = index;
1277 
1278 	/* attempt to parse vbios connector type and hotplug gpio */
1279 	nv_connector->dcb = olddcb_conn(dev, index);
1280 	if (nv_connector->dcb) {
1281 		u32 entry = ROM16(nv_connector->dcb[0]);
1282 		if (olddcb_conntab(dev)[3] >= 4)
1283 			entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1284 
1285 		nv_connector->type = nv_connector->dcb[0];
1286 		if (drm_conntype_from_dcb(nv_connector->type) ==
1287 					  DRM_MODE_CONNECTOR_Unknown) {
1288 			NV_WARN(drm, "unknown connector type %02x\n",
1289 				nv_connector->type);
1290 			nv_connector->type = DCB_CONNECTOR_NONE;
1291 		}
1292 
1293 		/* Gigabyte NX85T */
1294 		if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1295 			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1296 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1297 		}
1298 
1299 		/* Gigabyte GV-NX86T512H */
1300 		if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1301 			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1302 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1303 		}
1304 	} else {
1305 		nv_connector->type = DCB_CONNECTOR_NONE;
1306 	}
1307 
1308 	/* no vbios data, or an unknown dcb connector type - attempt to
1309 	 * figure out something suitable ourselves
1310 	 */
1311 	if (nv_connector->type == DCB_CONNECTOR_NONE) {
1312 		struct nouveau_drm *drm = nouveau_drm(dev);
1313 		struct dcb_table *dcbt = &drm->vbios.dcb;
1314 		u32 encoders = 0;
1315 		int i;
1316 
1317 		for (i = 0; i < dcbt->entries; i++) {
1318 			if (dcbt->entry[i].connector == nv_connector->index)
1319 				encoders |= (1 << dcbt->entry[i].type);
1320 		}
1321 
1322 		if (encoders & (1 << DCB_OUTPUT_DP)) {
1323 			if (encoders & (1 << DCB_OUTPUT_TMDS))
1324 				nv_connector->type = DCB_CONNECTOR_DP;
1325 			else
1326 				nv_connector->type = DCB_CONNECTOR_eDP;
1327 		} else
1328 		if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1329 			if (encoders & (1 << DCB_OUTPUT_ANALOG))
1330 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1331 			else
1332 				nv_connector->type = DCB_CONNECTOR_DVI_D;
1333 		} else
1334 		if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1335 			nv_connector->type = DCB_CONNECTOR_VGA;
1336 		} else
1337 		if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1338 			nv_connector->type = DCB_CONNECTOR_LVDS;
1339 		} else
1340 		if (encoders & (1 << DCB_OUTPUT_TV)) {
1341 			nv_connector->type = DCB_CONNECTOR_TV_0;
1342 		}
1343 	}
1344 
1345 	switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1346 	case DRM_MODE_CONNECTOR_LVDS:
1347 		ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1348 		if (ret) {
1349 			NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1350 			kfree(nv_connector);
1351 			return ERR_PTR(ret);
1352 		}
1353 
1354 		funcs = &nouveau_connector_funcs_lvds;
1355 		break;
1356 	case DRM_MODE_CONNECTOR_DisplayPort:
1357 	case DRM_MODE_CONNECTOR_eDP:
1358 		nv_connector->aux.dev = connector->kdev;
1359 		nv_connector->aux.drm_dev = dev;
1360 		nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1361 		snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1362 			 dcbe->hasht, dcbe->hashm);
1363 		nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1364 		drm_dp_aux_init(&nv_connector->aux);
1365 		if (ret) {
1366 			NV_ERROR(drm, "Failed to init AUX adapter for sor-%04x-%04x: %d\n",
1367 				 dcbe->hasht, dcbe->hashm, ret);
1368 			kfree(nv_connector);
1369 			return ERR_PTR(ret);
1370 		}
1371 		fallthrough;
1372 	default:
1373 		funcs = &nouveau_connector_funcs;
1374 		break;
1375 	}
1376 
1377 	/* HDMI 3D support */
1378 	if ((disp->disp.object.oclass >= G82_DISP)
1379 	    && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1380 		|| (type == DRM_MODE_CONNECTOR_eDP)
1381 		|| (type == DRM_MODE_CONNECTOR_HDMIA)))
1382 		connector->stereo_allowed = true;
1383 
1384 	/* defaults, will get overridden in detect() */
1385 	connector->interlace_allowed = false;
1386 	connector->doublescan_allowed = false;
1387 
1388 	drm_connector_init(dev, connector, funcs, type);
1389 	drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1390 
1391 	connector->funcs->reset(connector);
1392 	nouveau_conn_attach_properties(connector);
1393 
1394 	/* Default scaling mode */
1395 	switch (nv_connector->type) {
1396 	case DCB_CONNECTOR_LVDS:
1397 	case DCB_CONNECTOR_LVDS_SPWG:
1398 	case DCB_CONNECTOR_eDP:
1399 		/* see note in nouveau_connector_set_property() */
1400 		if (disp->disp.object.oclass < NV50_DISP) {
1401 			nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1402 			break;
1403 		}
1404 		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1405 		break;
1406 	default:
1407 		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1408 		break;
1409 	}
1410 
1411 	/* dithering properties */
1412 	switch (nv_connector->type) {
1413 	case DCB_CONNECTOR_TV_0:
1414 	case DCB_CONNECTOR_TV_1:
1415 	case DCB_CONNECTOR_TV_3:
1416 	case DCB_CONNECTOR_VGA:
1417 		break;
1418 	default:
1419 		nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1420 		break;
1421 	}
1422 
1423 	switch (type) {
1424 	case DRM_MODE_CONNECTOR_DisplayPort:
1425 	case DRM_MODE_CONNECTOR_eDP:
1426 		drm_dp_cec_register_connector(&nv_connector->aux, connector);
1427 		break;
1428 	}
1429 
1430 	ret = nvif_notify_ctor(&disp->disp.object, "kmsHotplug",
1431 			       nouveau_connector_hotplug,
1432 			       true, NV04_DISP_NTFY_CONN,
1433 			       &(struct nvif_notify_conn_req_v0) {
1434 				.mask = NVIF_NOTIFY_CONN_V0_ANY,
1435 				.conn = index,
1436 			       },
1437 			       sizeof(struct nvif_notify_conn_req_v0),
1438 			       sizeof(struct nvif_notify_conn_rep_v0),
1439 			       &nv_connector->hpd);
1440 	if (ret)
1441 		connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1442 	else
1443 		connector->polled = DRM_CONNECTOR_POLL_HPD;
1444 
1445 	drm_connector_register(connector);
1446 	return connector;
1447 }
1448