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 		kfree(nv_connector->aux.name);
405 	}
406 	kfree(connector);
407 }
408 
409 static struct nouveau_encoder *
410 nouveau_connector_ddc_detect(struct drm_connector *connector)
411 {
412 	struct drm_device *dev = connector->dev;
413 	struct pci_dev *pdev = to_pci_dev(dev->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(pdev);
442 			if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
443 				found = nv_encoder;
444 			if (switcheroo_ddc)
445 				vga_switcheroo_unlock_ddc(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 pci_dev *pdev = to_pci_dev(dev->dev);
464 	struct device_node *cn, *dn = pci_device_to_OF_node(pdev);
465 
466 	if (!dn ||
467 	    !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
468 	      (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
469 		return NULL;
470 
471 	for_each_child_of_node(dn, cn) {
472 		const char *name = of_get_property(cn, "name", NULL);
473 		const void *edid = of_get_property(cn, "EDID", NULL);
474 		int idx = name ? name[strlen(name) - 1] - 'A' : 0;
475 
476 		if (nv_encoder->dcb->i2c_index == idx && edid) {
477 			nv_connector->edid =
478 				kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
479 			of_node_put(cn);
480 			return nv_encoder;
481 		}
482 	}
483 #endif
484 	return NULL;
485 }
486 
487 static void
488 nouveau_connector_set_encoder(struct drm_connector *connector,
489 			      struct nouveau_encoder *nv_encoder)
490 {
491 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
492 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
493 	struct drm_device *dev = connector->dev;
494 	struct pci_dev *pdev = to_pci_dev(dev->dev);
495 
496 	if (nv_connector->detected_encoder == nv_encoder)
497 		return;
498 	nv_connector->detected_encoder = nv_encoder;
499 
500 	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
501 		if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
502 			connector->interlace_allowed =
503 				nv_encoder->caps.dp_interlace;
504 		else
505 			connector->interlace_allowed = true;
506 		connector->doublescan_allowed = true;
507 	} else
508 	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
509 	    nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
510 		connector->doublescan_allowed = false;
511 		connector->interlace_allowed = false;
512 	} else {
513 		connector->doublescan_allowed = true;
514 		if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
515 		    (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
516 		     (pdev->device & 0x0ff0) != 0x0100 &&
517 		     (pdev->device & 0x0ff0) != 0x0150))
518 			/* HW is broken */
519 			connector->interlace_allowed = false;
520 		else
521 			connector->interlace_allowed = true;
522 	}
523 
524 	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
525 		drm_object_property_set_value(&connector->base,
526 			dev->mode_config.dvi_i_subconnector_property,
527 			nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
528 			DRM_MODE_SUBCONNECTOR_DVID :
529 			DRM_MODE_SUBCONNECTOR_DVIA);
530 	}
531 }
532 
533 static void
534 nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
535 			   struct edid *edid)
536 {
537 	if (nv_connector->edid != edid) {
538 		struct edid *old_edid = nv_connector->edid;
539 
540 		drm_connector_update_edid_property(&nv_connector->base, edid);
541 		kfree(old_edid);
542 		nv_connector->edid = edid;
543 	}
544 }
545 
546 static enum drm_connector_status
547 nouveau_connector_detect(struct drm_connector *connector, bool force)
548 {
549 	struct drm_device *dev = connector->dev;
550 	struct nouveau_drm *drm = nouveau_drm(dev);
551 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
552 	struct nouveau_encoder *nv_encoder = NULL;
553 	struct nouveau_encoder *nv_partner;
554 	struct i2c_adapter *i2c;
555 	int type;
556 	int ret;
557 	enum drm_connector_status conn_status = connector_status_disconnected;
558 
559 	/* Outputs are only polled while runtime active, so resuming the
560 	 * device here is unnecessary (and would deadlock upon runtime suspend
561 	 * because it waits for polling to finish). We do however, want to
562 	 * prevent the autosuspend timer from elapsing during this operation
563 	 * if possible.
564 	 */
565 	if (drm_kms_helper_is_poll_worker()) {
566 		pm_runtime_get_noresume(dev->dev);
567 	} else {
568 		ret = pm_runtime_get_sync(dev->dev);
569 		if (ret < 0 && ret != -EACCES) {
570 			pm_runtime_put_autosuspend(dev->dev);
571 			nouveau_connector_set_edid(nv_connector, NULL);
572 			return conn_status;
573 		}
574 	}
575 
576 	nv_encoder = nouveau_connector_ddc_detect(connector);
577 	if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
578 		struct edid *new_edid;
579 
580 		if ((vga_switcheroo_handler_flags() &
581 		     VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
582 		    nv_connector->type == DCB_CONNECTOR_LVDS)
583 			new_edid = drm_get_edid_switcheroo(connector, i2c);
584 		else
585 			new_edid = drm_get_edid(connector, i2c);
586 
587 		nouveau_connector_set_edid(nv_connector, new_edid);
588 		if (!nv_connector->edid) {
589 			NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
590 				 connector->name);
591 			goto detect_analog;
592 		}
593 
594 		/* Override encoder type for DVI-I based on whether EDID
595 		 * says the display is digital or analog, both use the
596 		 * same i2c channel so the value returned from ddc_detect
597 		 * isn't necessarily correct.
598 		 */
599 		nv_partner = NULL;
600 		if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
601 			nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
602 		if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
603 			nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
604 
605 		if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
606 				    nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
607 				   (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
608 				    nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
609 			if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
610 				type = DCB_OUTPUT_TMDS;
611 			else
612 				type = DCB_OUTPUT_ANALOG;
613 
614 			nv_encoder = find_encoder(connector, type);
615 		}
616 
617 		nouveau_connector_set_encoder(connector, nv_encoder);
618 		conn_status = connector_status_connected;
619 		drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
620 		goto out;
621 	} else {
622 		nouveau_connector_set_edid(nv_connector, NULL);
623 	}
624 
625 	nv_encoder = nouveau_connector_of_detect(connector);
626 	if (nv_encoder) {
627 		nouveau_connector_set_encoder(connector, nv_encoder);
628 		conn_status = connector_status_connected;
629 		goto out;
630 	}
631 
632 detect_analog:
633 	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
634 	if (!nv_encoder && !nouveau_tv_disable)
635 		nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
636 	if (nv_encoder && force) {
637 		struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
638 		const struct drm_encoder_helper_funcs *helper =
639 						encoder->helper_private;
640 
641 		if (helper->detect(encoder, connector) ==
642 						connector_status_connected) {
643 			nouveau_connector_set_encoder(connector, nv_encoder);
644 			conn_status = connector_status_connected;
645 			goto out;
646 		}
647 	}
648 
649  out:
650 	if (!nv_connector->edid)
651 		drm_dp_cec_unset_edid(&nv_connector->aux);
652 
653 	pm_runtime_mark_last_busy(dev->dev);
654 	pm_runtime_put_autosuspend(dev->dev);
655 
656 	return conn_status;
657 }
658 
659 static enum drm_connector_status
660 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
661 {
662 	struct drm_device *dev = connector->dev;
663 	struct nouveau_drm *drm = nouveau_drm(dev);
664 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
665 	struct nouveau_encoder *nv_encoder = NULL;
666 	struct edid *edid = NULL;
667 	enum drm_connector_status status = connector_status_disconnected;
668 
669 	nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
670 	if (!nv_encoder)
671 		goto out;
672 
673 	/* Try retrieving EDID via DDC */
674 	if (!drm->vbios.fp_no_ddc) {
675 		status = nouveau_connector_detect(connector, force);
676 		if (status == connector_status_connected) {
677 			edid = nv_connector->edid;
678 			goto out;
679 		}
680 	}
681 
682 	/* On some laptops (Sony, i'm looking at you) there appears to
683 	 * be no direct way of accessing the panel's EDID.  The only
684 	 * option available to us appears to be to ask ACPI for help..
685 	 *
686 	 * It's important this check's before trying straps, one of the
687 	 * said manufacturer's laptops are configured in such a way
688 	 * the nouveau decides an entry in the VBIOS FP mode table is
689 	 * valid - it's not (rh#613284)
690 	 */
691 	if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
692 		edid = nouveau_acpi_edid(dev, connector);
693 		if (edid) {
694 			status = connector_status_connected;
695 			goto out;
696 		}
697 	}
698 
699 	/* If no EDID found above, and the VBIOS indicates a hardcoded
700 	 * modeline is avalilable for the panel, set it as the panel's
701 	 * native mode and exit.
702 	 */
703 	if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
704 	    nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
705 		status = connector_status_connected;
706 		goto out;
707 	}
708 
709 	/* Still nothing, some VBIOS images have a hardcoded EDID block
710 	 * stored for the panel stored in them.
711 	 */
712 	if (!drm->vbios.fp_no_ddc) {
713 		edid = (struct edid *)nouveau_bios_embedded_edid(dev);
714 		if (edid) {
715 			edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
716 			if (edid)
717 				status = connector_status_connected;
718 		}
719 	}
720 
721 out:
722 #if defined(CONFIG_ACPI_BUTTON) || \
723 	(defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
724 	if (status == connector_status_connected &&
725 	    !nouveau_ignorelid && !acpi_lid_open())
726 		status = connector_status_unknown;
727 #endif
728 
729 	nouveau_connector_set_edid(nv_connector, edid);
730 	nouveau_connector_set_encoder(connector, nv_encoder);
731 	return status;
732 }
733 
734 static void
735 nouveau_connector_force(struct drm_connector *connector)
736 {
737 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
738 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
739 	struct nouveau_encoder *nv_encoder;
740 	int type;
741 
742 	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
743 		if (connector->force == DRM_FORCE_ON_DIGITAL)
744 			type = DCB_OUTPUT_TMDS;
745 		else
746 			type = DCB_OUTPUT_ANALOG;
747 	} else
748 		type = DCB_OUTPUT_ANY;
749 
750 	nv_encoder = find_encoder(connector, type);
751 	if (!nv_encoder) {
752 		NV_ERROR(drm, "can't find encoder to force %s on!\n",
753 			 connector->name);
754 		connector->status = connector_status_disconnected;
755 		return;
756 	}
757 
758 	nouveau_connector_set_encoder(connector, nv_encoder);
759 }
760 
761 static int
762 nouveau_connector_set_property(struct drm_connector *connector,
763 			       struct drm_property *property, uint64_t value)
764 {
765 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
766 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
767 	struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
768 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
769 	int ret;
770 
771 	ret = connector->funcs->atomic_set_property(&nv_connector->base,
772 						    &asyc->state,
773 						    property, value);
774 	if (ret) {
775 		if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
776 			return get_slave_funcs(encoder)->set_property(
777 				encoder, connector, property, value);
778 		return ret;
779 	}
780 
781 	nv_connector->scaling_mode = asyc->scaler.mode;
782 	nv_connector->dithering_mode = asyc->dither.mode;
783 
784 	if (connector->encoder && connector->encoder->crtc) {
785 		ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
786 					      &connector->encoder->crtc->mode,
787 					       connector->encoder->crtc->x,
788 					       connector->encoder->crtc->y,
789 					       NULL);
790 		if (!ret)
791 			return -EINVAL;
792 	}
793 
794 	return 0;
795 }
796 
797 struct moderec {
798 	int hdisplay;
799 	int vdisplay;
800 };
801 
802 static struct moderec scaler_modes[] = {
803 	{ 1920, 1200 },
804 	{ 1920, 1080 },
805 	{ 1680, 1050 },
806 	{ 1600, 1200 },
807 	{ 1400, 1050 },
808 	{ 1280, 1024 },
809 	{ 1280, 960 },
810 	{ 1152, 864 },
811 	{ 1024, 768 },
812 	{ 800, 600 },
813 	{ 720, 400 },
814 	{ 640, 480 },
815 	{ 640, 400 },
816 	{ 640, 350 },
817 	{}
818 };
819 
820 static int
821 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
822 {
823 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
824 	struct drm_display_mode *native = nv_connector->native_mode, *m;
825 	struct drm_device *dev = connector->dev;
826 	struct moderec *mode = &scaler_modes[0];
827 	int modes = 0;
828 
829 	if (!native)
830 		return 0;
831 
832 	while (mode->hdisplay) {
833 		if (mode->hdisplay <= native->hdisplay &&
834 		    mode->vdisplay <= native->vdisplay &&
835 		    (mode->hdisplay != native->hdisplay ||
836 		     mode->vdisplay != native->vdisplay)) {
837 			m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
838 					 drm_mode_vrefresh(native), false,
839 					 false, false);
840 			if (!m)
841 				continue;
842 
843 			drm_mode_probed_add(connector, m);
844 			modes++;
845 		}
846 
847 		mode++;
848 	}
849 
850 	return modes;
851 }
852 
853 static void
854 nouveau_connector_detect_depth(struct drm_connector *connector)
855 {
856 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
857 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
858 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
859 	struct nvbios *bios = &drm->vbios;
860 	struct drm_display_mode *mode = nv_connector->native_mode;
861 	bool duallink;
862 
863 	/* if the edid is feeling nice enough to provide this info, use it */
864 	if (nv_connector->edid && connector->display_info.bpc)
865 		return;
866 
867 	/* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
868 	if (nv_connector->type == DCB_CONNECTOR_eDP) {
869 		connector->display_info.bpc = 6;
870 		return;
871 	}
872 
873 	/* we're out of options unless we're LVDS, default to 8bpc */
874 	if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
875 		connector->display_info.bpc = 8;
876 		return;
877 	}
878 
879 	connector->display_info.bpc = 6;
880 
881 	/* LVDS: panel straps */
882 	if (bios->fp_no_ddc) {
883 		if (bios->fp.if_is_24bit)
884 			connector->display_info.bpc = 8;
885 		return;
886 	}
887 
888 	/* LVDS: DDC panel, need to first determine the number of links to
889 	 * know which if_is_24bit flag to check...
890 	 */
891 	if (nv_connector->edid &&
892 	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
893 		duallink = ((u8 *)nv_connector->edid)[121] == 2;
894 	else
895 		duallink = mode->clock >= bios->fp.duallink_transition_clk;
896 
897 	if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
898 	    ( duallink && (bios->fp.strapless_is_24bit & 2)))
899 		connector->display_info.bpc = 8;
900 }
901 
902 static int
903 nouveau_connector_late_register(struct drm_connector *connector)
904 {
905 	int ret;
906 
907 	ret = nouveau_backlight_init(connector);
908 	if (ret)
909 		return ret;
910 
911 	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
912 	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
913 		ret = drm_dp_aux_register(&nouveau_connector(connector)->aux);
914 		if (ret)
915 			goto backlight_fini;
916 	}
917 
918 	return 0;
919 backlight_fini:
920 	nouveau_backlight_fini(connector);
921 	return ret;
922 }
923 
924 static void
925 nouveau_connector_early_unregister(struct drm_connector *connector)
926 {
927 	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
928 	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
929 		drm_dp_aux_unregister(&nouveau_connector(connector)->aux);
930 
931 	nouveau_backlight_fini(connector);
932 }
933 
934 static int
935 nouveau_connector_get_modes(struct drm_connector *connector)
936 {
937 	struct drm_device *dev = connector->dev;
938 	struct nouveau_drm *drm = nouveau_drm(dev);
939 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
940 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
941 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
942 	int ret = 0;
943 
944 	/* destroy the native mode, the attached monitor could have changed.
945 	 */
946 	if (nv_connector->native_mode) {
947 		drm_mode_destroy(dev, nv_connector->native_mode);
948 		nv_connector->native_mode = NULL;
949 	}
950 
951 	if (nv_connector->edid)
952 		ret = drm_add_edid_modes(connector, nv_connector->edid);
953 	else
954 	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
955 	    (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
956 	     drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
957 		struct drm_display_mode mode;
958 
959 		nouveau_bios_fp_mode(dev, &mode);
960 		nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
961 	}
962 
963 	/* Determine display colour depth for everything except LVDS now,
964 	 * DP requires this before mode_valid() is called.
965 	 */
966 	if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
967 		nouveau_connector_detect_depth(connector);
968 
969 	/* Find the native mode if this is a digital panel, if we didn't
970 	 * find any modes through DDC previously add the native mode to
971 	 * the list of modes.
972 	 */
973 	if (!nv_connector->native_mode)
974 		nv_connector->native_mode = nouveau_conn_native_mode(connector);
975 	if (ret == 0 && nv_connector->native_mode) {
976 		struct drm_display_mode *mode;
977 
978 		mode = drm_mode_duplicate(dev, nv_connector->native_mode);
979 		drm_mode_probed_add(connector, mode);
980 		ret = 1;
981 	}
982 
983 	/* Determine LVDS colour depth, must happen after determining
984 	 * "native" mode as some VBIOS tables require us to use the
985 	 * pixel clock as part of the lookup...
986 	 */
987 	if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
988 		nouveau_connector_detect_depth(connector);
989 
990 	if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
991 		ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
992 
993 	if (nv_connector->type == DCB_CONNECTOR_LVDS ||
994 	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
995 	    nv_connector->type == DCB_CONNECTOR_eDP)
996 		ret += nouveau_connector_scaler_modes_add(connector);
997 
998 	return ret;
999 }
1000 
1001 static unsigned
1002 get_tmds_link_bandwidth(struct drm_connector *connector)
1003 {
1004 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1005 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1006 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1007 	struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
1008 	struct drm_display_info *info = NULL;
1009 	unsigned duallink_scale =
1010 		nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
1011 
1012 	if (drm_detect_hdmi_monitor(nv_connector->edid)) {
1013 		info = &nv_connector->base.display_info;
1014 		duallink_scale = 1;
1015 	}
1016 
1017 	if (info) {
1018 		if (nouveau_hdmimhz > 0)
1019 			return nouveau_hdmimhz * 1000;
1020 		/* Note: these limits are conservative, some Fermi's
1021 		 * can do 297 MHz. Unclear how this can be determined.
1022 		 */
1023 		if (drm->client.device.info.chipset >= 0x120) {
1024 			const int max_tmds_clock =
1025 				info->hdmi.scdc.scrambling.supported ?
1026 				594000 : 340000;
1027 			return info->max_tmds_clock ?
1028 				min(info->max_tmds_clock, max_tmds_clock) :
1029 				max_tmds_clock;
1030 		}
1031 		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1032 			return 297000;
1033 		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1034 			return 225000;
1035 	}
1036 
1037 	if (dcb->location != DCB_LOC_ON_CHIP ||
1038 	    drm->client.device.info.chipset >= 0x46)
1039 		return 165000 * duallink_scale;
1040 	else if (drm->client.device.info.chipset >= 0x40)
1041 		return 155000 * duallink_scale;
1042 	else if (drm->client.device.info.chipset >= 0x18)
1043 		return 135000 * duallink_scale;
1044 	else
1045 		return 112000 * duallink_scale;
1046 }
1047 
1048 static enum drm_mode_status
1049 nouveau_connector_mode_valid(struct drm_connector *connector,
1050 			     struct drm_display_mode *mode)
1051 {
1052 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1053 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1054 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1055 	unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1056 
1057 	switch (nv_encoder->dcb->type) {
1058 	case DCB_OUTPUT_LVDS:
1059 		if (nv_connector->native_mode &&
1060 		    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1061 		     mode->vdisplay > nv_connector->native_mode->vdisplay))
1062 			return MODE_PANEL;
1063 
1064 		min_clock = 0;
1065 		max_clock = 400000;
1066 		break;
1067 	case DCB_OUTPUT_TMDS:
1068 		max_clock = get_tmds_link_bandwidth(connector);
1069 		break;
1070 	case DCB_OUTPUT_ANALOG:
1071 		max_clock = nv_encoder->dcb->crtconf.maxfreq;
1072 		if (!max_clock)
1073 			max_clock = 350000;
1074 		break;
1075 	case DCB_OUTPUT_TV:
1076 		return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1077 	case DCB_OUTPUT_DP:
1078 		return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1079 	default:
1080 		BUG();
1081 		return MODE_BAD;
1082 	}
1083 
1084 	if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1085 		clock *= 2;
1086 
1087 	if (clock < min_clock)
1088 		return MODE_CLOCK_LOW;
1089 	if (clock > max_clock)
1090 		return MODE_CLOCK_HIGH;
1091 
1092 	return MODE_OK;
1093 }
1094 
1095 static struct drm_encoder *
1096 nouveau_connector_best_encoder(struct drm_connector *connector)
1097 {
1098 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1099 
1100 	if (nv_connector->detected_encoder)
1101 		return to_drm_encoder(nv_connector->detected_encoder);
1102 
1103 	return NULL;
1104 }
1105 
1106 static const struct drm_connector_helper_funcs
1107 nouveau_connector_helper_funcs = {
1108 	.get_modes = nouveau_connector_get_modes,
1109 	.mode_valid = nouveau_connector_mode_valid,
1110 	.best_encoder = nouveau_connector_best_encoder,
1111 };
1112 
1113 static const struct drm_connector_funcs
1114 nouveau_connector_funcs = {
1115 	.dpms = drm_helper_connector_dpms,
1116 	.reset = nouveau_conn_reset,
1117 	.detect = nouveau_connector_detect,
1118 	.force = nouveau_connector_force,
1119 	.fill_modes = drm_helper_probe_single_connector_modes,
1120 	.set_property = nouveau_connector_set_property,
1121 	.destroy = nouveau_connector_destroy,
1122 	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1123 	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1124 	.atomic_set_property = nouveau_conn_atomic_set_property,
1125 	.atomic_get_property = nouveau_conn_atomic_get_property,
1126 	.late_register = nouveau_connector_late_register,
1127 	.early_unregister = nouveau_connector_early_unregister,
1128 };
1129 
1130 static const struct drm_connector_funcs
1131 nouveau_connector_funcs_lvds = {
1132 	.dpms = drm_helper_connector_dpms,
1133 	.reset = nouveau_conn_reset,
1134 	.detect = nouveau_connector_detect_lvds,
1135 	.force = nouveau_connector_force,
1136 	.fill_modes = drm_helper_probe_single_connector_modes,
1137 	.set_property = nouveau_connector_set_property,
1138 	.destroy = nouveau_connector_destroy,
1139 	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1140 	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1141 	.atomic_set_property = nouveau_conn_atomic_set_property,
1142 	.atomic_get_property = nouveau_conn_atomic_get_property,
1143 	.late_register = nouveau_connector_late_register,
1144 	.early_unregister = nouveau_connector_early_unregister,
1145 };
1146 
1147 void
1148 nouveau_connector_hpd(struct drm_connector *connector)
1149 {
1150 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1151 	u32 mask = drm_connector_mask(connector);
1152 
1153 	mutex_lock(&drm->hpd_lock);
1154 	if (!(drm->hpd_pending & mask)) {
1155 		drm->hpd_pending |= mask;
1156 		schedule_work(&drm->hpd_work);
1157 	}
1158 	mutex_unlock(&drm->hpd_lock);
1159 }
1160 
1161 static int
1162 nouveau_connector_hotplug(struct nvif_notify *notify)
1163 {
1164 	struct nouveau_connector *nv_connector =
1165 		container_of(notify, typeof(*nv_connector), hpd);
1166 	struct drm_connector *connector = &nv_connector->base;
1167 	struct drm_device *dev = connector->dev;
1168 	struct nouveau_drm *drm = nouveau_drm(dev);
1169 	const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1170 	bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1171 
1172 	if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1173 		nouveau_dp_irq(drm, nv_connector);
1174 		return NVIF_NOTIFY_KEEP;
1175 	}
1176 
1177 	NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", connector->name);
1178 	nouveau_connector_hpd(connector);
1179 
1180 	return NVIF_NOTIFY_KEEP;
1181 }
1182 
1183 static ssize_t
1184 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1185 {
1186 	struct nouveau_connector *nv_connector =
1187 		container_of(obj, typeof(*nv_connector), aux);
1188 	struct nouveau_encoder *nv_encoder;
1189 	struct nvkm_i2c_aux *aux;
1190 	u8 size = msg->size;
1191 	int ret;
1192 
1193 	nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1194 	if (!nv_encoder || !(aux = nv_encoder->aux))
1195 		return -ENODEV;
1196 	if (WARN_ON(msg->size > 16))
1197 		return -E2BIG;
1198 
1199 	ret = nvkm_i2c_aux_acquire(aux);
1200 	if (ret)
1201 		return ret;
1202 
1203 	ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1204 				msg->buffer, &size);
1205 	nvkm_i2c_aux_release(aux);
1206 	if (ret >= 0) {
1207 		msg->reply = ret;
1208 		return size;
1209 	}
1210 
1211 	return ret;
1212 }
1213 
1214 static int
1215 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1216 {
1217 	switch (dcb) {
1218 	case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1219 	case DCB_CONNECTOR_TV_0     :
1220 	case DCB_CONNECTOR_TV_1     :
1221 	case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1222 	case DCB_CONNECTOR_DMS59_0  :
1223 	case DCB_CONNECTOR_DMS59_1  :
1224 	case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1225 	case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1226 	case DCB_CONNECTOR_LVDS     :
1227 	case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1228 	case DCB_CONNECTOR_DMS59_DP0:
1229 	case DCB_CONNECTOR_DMS59_DP1:
1230 	case DCB_CONNECTOR_DP       :
1231 	case DCB_CONNECTOR_mDP      :
1232 	case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1233 	case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1234 	case DCB_CONNECTOR_HDMI_0   :
1235 	case DCB_CONNECTOR_HDMI_1   :
1236 	case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1237 	case DCB_CONNECTOR_WFD	    : return DRM_MODE_CONNECTOR_VIRTUAL;
1238 	default:
1239 		break;
1240 	}
1241 
1242 	return DRM_MODE_CONNECTOR_Unknown;
1243 }
1244 
1245 struct drm_connector *
1246 nouveau_connector_create(struct drm_device *dev,
1247 			 const struct dcb_output *dcbe)
1248 {
1249 	const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1250 	struct nouveau_drm *drm = nouveau_drm(dev);
1251 	struct nouveau_display *disp = nouveau_display(dev);
1252 	struct nouveau_connector *nv_connector = NULL;
1253 	struct drm_connector *connector;
1254 	struct drm_connector_list_iter conn_iter;
1255 	char aux_name[48] = {0};
1256 	int index = dcbe->connector;
1257 	int type, ret = 0;
1258 	bool dummy;
1259 
1260 	drm_connector_list_iter_begin(dev, &conn_iter);
1261 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1262 		nv_connector = nouveau_connector(connector);
1263 		if (nv_connector->index == index) {
1264 			drm_connector_list_iter_end(&conn_iter);
1265 			return connector;
1266 		}
1267 	}
1268 	drm_connector_list_iter_end(&conn_iter);
1269 
1270 	nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1271 	if (!nv_connector)
1272 		return ERR_PTR(-ENOMEM);
1273 
1274 	connector = &nv_connector->base;
1275 	nv_connector->index = index;
1276 
1277 	/* attempt to parse vbios connector type and hotplug gpio */
1278 	nv_connector->dcb = olddcb_conn(dev, index);
1279 	if (nv_connector->dcb) {
1280 		u32 entry = ROM16(nv_connector->dcb[0]);
1281 		if (olddcb_conntab(dev)[3] >= 4)
1282 			entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1283 
1284 		nv_connector->type = nv_connector->dcb[0];
1285 		if (drm_conntype_from_dcb(nv_connector->type) ==
1286 					  DRM_MODE_CONNECTOR_Unknown) {
1287 			NV_WARN(drm, "unknown connector type %02x\n",
1288 				nv_connector->type);
1289 			nv_connector->type = DCB_CONNECTOR_NONE;
1290 		}
1291 
1292 		/* Gigabyte NX85T */
1293 		if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1294 			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1295 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1296 		}
1297 
1298 		/* Gigabyte GV-NX86T512H */
1299 		if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1300 			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1301 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1302 		}
1303 	} else {
1304 		nv_connector->type = DCB_CONNECTOR_NONE;
1305 	}
1306 
1307 	/* no vbios data, or an unknown dcb connector type - attempt to
1308 	 * figure out something suitable ourselves
1309 	 */
1310 	if (nv_connector->type == DCB_CONNECTOR_NONE) {
1311 		struct nouveau_drm *drm = nouveau_drm(dev);
1312 		struct dcb_table *dcbt = &drm->vbios.dcb;
1313 		u32 encoders = 0;
1314 		int i;
1315 
1316 		for (i = 0; i < dcbt->entries; i++) {
1317 			if (dcbt->entry[i].connector == nv_connector->index)
1318 				encoders |= (1 << dcbt->entry[i].type);
1319 		}
1320 
1321 		if (encoders & (1 << DCB_OUTPUT_DP)) {
1322 			if (encoders & (1 << DCB_OUTPUT_TMDS))
1323 				nv_connector->type = DCB_CONNECTOR_DP;
1324 			else
1325 				nv_connector->type = DCB_CONNECTOR_eDP;
1326 		} else
1327 		if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1328 			if (encoders & (1 << DCB_OUTPUT_ANALOG))
1329 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1330 			else
1331 				nv_connector->type = DCB_CONNECTOR_DVI_D;
1332 		} else
1333 		if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1334 			nv_connector->type = DCB_CONNECTOR_VGA;
1335 		} else
1336 		if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1337 			nv_connector->type = DCB_CONNECTOR_LVDS;
1338 		} else
1339 		if (encoders & (1 << DCB_OUTPUT_TV)) {
1340 			nv_connector->type = DCB_CONNECTOR_TV_0;
1341 		}
1342 	}
1343 
1344 	switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1345 	case DRM_MODE_CONNECTOR_LVDS:
1346 		ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1347 		if (ret) {
1348 			NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1349 			kfree(nv_connector);
1350 			return ERR_PTR(ret);
1351 		}
1352 
1353 		funcs = &nouveau_connector_funcs_lvds;
1354 		break;
1355 	case DRM_MODE_CONNECTOR_DisplayPort:
1356 	case DRM_MODE_CONNECTOR_eDP:
1357 		nv_connector->aux.dev = connector->kdev;
1358 		nv_connector->aux.drm_dev = dev;
1359 		nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1360 		snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1361 			 dcbe->hasht, dcbe->hashm);
1362 		nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1363 		drm_dp_aux_init(&nv_connector->aux);
1364 		if (ret) {
1365 			NV_ERROR(drm, "Failed to init AUX adapter for sor-%04x-%04x: %d\n",
1366 				 dcbe->hasht, dcbe->hashm, ret);
1367 			kfree(nv_connector);
1368 			return ERR_PTR(ret);
1369 		}
1370 		fallthrough;
1371 	default:
1372 		funcs = &nouveau_connector_funcs;
1373 		break;
1374 	}
1375 
1376 	/* HDMI 3D support */
1377 	if ((disp->disp.object.oclass >= G82_DISP)
1378 	    && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1379 		|| (type == DRM_MODE_CONNECTOR_eDP)
1380 		|| (type == DRM_MODE_CONNECTOR_HDMIA)))
1381 		connector->stereo_allowed = true;
1382 
1383 	/* defaults, will get overridden in detect() */
1384 	connector->interlace_allowed = false;
1385 	connector->doublescan_allowed = false;
1386 
1387 	drm_connector_init(dev, connector, funcs, type);
1388 	drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1389 
1390 	connector->funcs->reset(connector);
1391 	nouveau_conn_attach_properties(connector);
1392 
1393 	/* Default scaling mode */
1394 	switch (nv_connector->type) {
1395 	case DCB_CONNECTOR_LVDS:
1396 	case DCB_CONNECTOR_LVDS_SPWG:
1397 	case DCB_CONNECTOR_eDP:
1398 		/* see note in nouveau_connector_set_property() */
1399 		if (disp->disp.object.oclass < NV50_DISP) {
1400 			nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1401 			break;
1402 		}
1403 		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1404 		break;
1405 	default:
1406 		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1407 		break;
1408 	}
1409 
1410 	/* dithering properties */
1411 	switch (nv_connector->type) {
1412 	case DCB_CONNECTOR_TV_0:
1413 	case DCB_CONNECTOR_TV_1:
1414 	case DCB_CONNECTOR_TV_3:
1415 	case DCB_CONNECTOR_VGA:
1416 		break;
1417 	default:
1418 		nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1419 		break;
1420 	}
1421 
1422 	switch (type) {
1423 	case DRM_MODE_CONNECTOR_DisplayPort:
1424 	case DRM_MODE_CONNECTOR_eDP:
1425 		drm_dp_cec_register_connector(&nv_connector->aux, connector);
1426 		break;
1427 	}
1428 
1429 	ret = nvif_notify_ctor(&disp->disp.object, "kmsHotplug",
1430 			       nouveau_connector_hotplug,
1431 			       true, NV04_DISP_NTFY_CONN,
1432 			       &(struct nvif_notify_conn_req_v0) {
1433 				.mask = NVIF_NOTIFY_CONN_V0_ANY,
1434 				.conn = index,
1435 			       },
1436 			       sizeof(struct nvif_notify_conn_req_v0),
1437 			       sizeof(struct nvif_notify_conn_rep_v0),
1438 			       &nv_connector->hpd);
1439 	if (ret)
1440 		connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1441 	else
1442 		connector->polled = DRM_CONNECTOR_POLL_HPD;
1443 
1444 	drm_connector_register(connector);
1445 	return connector;
1446 }
1447