drm/connector: Allow max possible encoders to attach to a connector
[sfrench/cifs-2.6.git] / drivers / gpu / drm / nouveau / nouveau_connector.c
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/drmP.h>
33 #include <drm/drm_atomic_helper.h>
34 #include <drm/drm_edid.h>
35 #include <drm/drm_crtc_helper.h>
36 #include <drm/drm_probe_helper.h>
37 #include <drm/drm_atomic.h>
38
39 #include "nouveau_reg.h"
40 #include "nouveau_drv.h"
41 #include "dispnv04/hw.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                 mode->vrefresh = drm_mode_vrefresh(mode);
64                 if (helper->mode_valid(connector, mode) != MODE_OK ||
65                     (mode->flags & DRM_MODE_FLAG_INTERLACE))
66                         continue;
67
68                 /* Use preferred mode if there is one.. */
69                 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
70                         NV_DEBUG(drm, "native mode from preferred\n");
71                         return drm_mode_duplicate(dev, mode);
72                 }
73
74                 /* Otherwise, take the resolution with the largest width, then
75                  * height, then vertical refresh
76                  */
77                 if (mode->hdisplay < high_w)
78                         continue;
79
80                 if (mode->hdisplay == high_w && mode->vdisplay < high_h)
81                         continue;
82
83                 if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
84                     mode->vrefresh < high_v)
85                         continue;
86
87                 high_w = mode->hdisplay;
88                 high_h = mode->vdisplay;
89                 high_v = mode->vrefresh;
90                 largest = mode;
91         }
92
93         NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
94                       high_w, high_h, high_v);
95         return largest ? drm_mode_duplicate(dev, largest) : NULL;
96 }
97
98 int
99 nouveau_conn_atomic_get_property(struct drm_connector *connector,
100                                  const struct drm_connector_state *state,
101                                  struct drm_property *property, u64 *val)
102 {
103         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
104         struct nouveau_display *disp = nouveau_display(connector->dev);
105         struct drm_device *dev = connector->dev;
106
107         if (property == dev->mode_config.scaling_mode_property)
108                 *val = asyc->scaler.mode;
109         else if (property == disp->underscan_property)
110                 *val = asyc->scaler.underscan.mode;
111         else if (property == disp->underscan_hborder_property)
112                 *val = asyc->scaler.underscan.hborder;
113         else if (property == disp->underscan_vborder_property)
114                 *val = asyc->scaler.underscan.vborder;
115         else if (property == disp->dithering_mode)
116                 *val = asyc->dither.mode;
117         else if (property == disp->dithering_depth)
118                 *val = asyc->dither.depth;
119         else if (property == disp->vibrant_hue_property)
120                 *val = asyc->procamp.vibrant_hue;
121         else if (property == disp->color_vibrance_property)
122                 *val = asyc->procamp.color_vibrance;
123         else
124                 return -EINVAL;
125
126         return 0;
127 }
128
129 int
130 nouveau_conn_atomic_set_property(struct drm_connector *connector,
131                                  struct drm_connector_state *state,
132                                  struct drm_property *property, u64 val)
133 {
134         struct drm_device *dev = connector->dev;
135         struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
136         struct nouveau_display *disp = nouveau_display(dev);
137
138         if (property == dev->mode_config.scaling_mode_property) {
139                 switch (val) {
140                 case DRM_MODE_SCALE_NONE:
141                         /* We allow 'None' for EDID modes, even on a fixed
142                          * panel (some exist with support for lower refresh
143                          * rates, which people might want to use for power-
144                          * saving purposes).
145                          *
146                          * Non-EDID modes will force the use of GPU scaling
147                          * to the native mode regardless of this setting.
148                          */
149                         switch (connector->connector_type) {
150                         case DRM_MODE_CONNECTOR_LVDS:
151                         case DRM_MODE_CONNECTOR_eDP:
152                                 /* ... except prior to G80, where the code
153                                  * doesn't support such things.
154                                  */
155                                 if (disp->disp.object.oclass < NV50_DISP)
156                                         return -EINVAL;
157                                 break;
158                         default:
159                                 break;
160                         }
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_conn_atom *asyc;
250
251         if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
252                 return;
253
254         if (connector->state)
255                 nouveau_conn_atomic_destroy_state(connector, connector->state);
256         __drm_atomic_helper_connector_reset(connector, &asyc->state);
257         asyc->dither.mode = DITHERING_MODE_AUTO;
258         asyc->dither.depth = DITHERING_DEPTH_AUTO;
259         asyc->scaler.mode = DRM_MODE_SCALE_NONE;
260         asyc->scaler.underscan.mode = UNDERSCAN_OFF;
261         asyc->procamp.color_vibrance = 150;
262         asyc->procamp.vibrant_hue = 90;
263
264         if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
265                 switch (connector->connector_type) {
266                 case DRM_MODE_CONNECTOR_LVDS:
267                         /* See note in nouveau_conn_atomic_set_property(). */
268                         asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
269                         break;
270                 default:
271                         break;
272                 }
273         }
274 }
275
276 void
277 nouveau_conn_attach_properties(struct drm_connector *connector)
278 {
279         struct drm_device *dev = connector->dev;
280         struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
281         struct nouveau_display *disp = nouveau_display(dev);
282
283         /* Init DVI-I specific properties. */
284         if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
285                 drm_object_attach_property(&connector->base, dev->mode_config.
286                                            dvi_i_subconnector_property, 0);
287
288         /* Add overscan compensation options to digital outputs. */
289         if (disp->underscan_property &&
290             (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
291              connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
292              connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
293              connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
294                 drm_object_attach_property(&connector->base,
295                                            disp->underscan_property,
296                                            UNDERSCAN_OFF);
297                 drm_object_attach_property(&connector->base,
298                                            disp->underscan_hborder_property, 0);
299                 drm_object_attach_property(&connector->base,
300                                            disp->underscan_vborder_property, 0);
301         }
302
303         /* Add hue and saturation options. */
304         if (disp->vibrant_hue_property)
305                 drm_object_attach_property(&connector->base,
306                                            disp->vibrant_hue_property,
307                                            armc->procamp.vibrant_hue);
308         if (disp->color_vibrance_property)
309                 drm_object_attach_property(&connector->base,
310                                            disp->color_vibrance_property,
311                                            armc->procamp.color_vibrance);
312
313         /* Scaling mode property. */
314         switch (connector->connector_type) {
315         case DRM_MODE_CONNECTOR_TV:
316                 break;
317         case DRM_MODE_CONNECTOR_VGA:
318                 if (disp->disp.object.oclass < NV50_DISP)
319                         break; /* Can only scale on DFPs. */
320                 /* Fall-through. */
321         default:
322                 drm_object_attach_property(&connector->base, dev->mode_config.
323                                            scaling_mode_property,
324                                            armc->scaler.mode);
325                 break;
326         }
327
328         /* Dithering properties. */
329         switch (connector->connector_type) {
330         case DRM_MODE_CONNECTOR_TV:
331         case DRM_MODE_CONNECTOR_VGA:
332                 break;
333         default:
334                 if (disp->dithering_mode) {
335                         drm_object_attach_property(&connector->base,
336                                                    disp->dithering_mode,
337                                                    armc->dither.mode);
338                 }
339                 if (disp->dithering_depth) {
340                         drm_object_attach_property(&connector->base,
341                                                    disp->dithering_depth,
342                                                    armc->dither.depth);
343                 }
344                 break;
345         }
346 }
347
348 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
349 int nouveau_tv_disable = 0;
350 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
351
352 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
353 int nouveau_ignorelid = 0;
354 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
355
356 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
357 int nouveau_duallink = 1;
358 module_param_named(duallink, nouveau_duallink, int, 0400);
359
360 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
361 int nouveau_hdmimhz = 0;
362 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
363
364 struct nouveau_encoder *
365 find_encoder(struct drm_connector *connector, int type)
366 {
367         struct nouveau_encoder *nv_encoder;
368         struct drm_encoder *enc;
369
370         drm_connector_for_each_possible_encoder(connector, enc) {
371                 nv_encoder = nouveau_encoder(enc);
372
373                 if (type == DCB_OUTPUT_ANY ||
374                     (nv_encoder->dcb && nv_encoder->dcb->type == type))
375                         return nv_encoder;
376         }
377
378         return NULL;
379 }
380
381 struct nouveau_connector *
382 nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
383 {
384         struct drm_device *dev = to_drm_encoder(encoder)->dev;
385         struct drm_connector *drm_connector;
386
387         list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
388                 if (drm_connector->encoder == to_drm_encoder(encoder))
389                         return nouveau_connector(drm_connector);
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_fini(&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                 drm_dp_aux_unregister(&nv_connector->aux);
406                 kfree(nv_connector->aux.name);
407         }
408         kfree(connector);
409 }
410
411 static struct nouveau_encoder *
412 nouveau_connector_ddc_detect(struct drm_connector *connector)
413 {
414         struct drm_device *dev = connector->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(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                 /* fall-through */
436                 default:
437                         if (!nv_encoder->i2c)
438                                 break;
439
440                         if (switcheroo_ddc)
441                                 vga_switcheroo_lock_ddc(dev->pdev);
442                         if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
443                                 found = nv_encoder;
444                         if (switcheroo_ddc)
445                                 vga_switcheroo_unlock_ddc(dev->pdev);
446
447                         break;
448                 }
449                 if (found)
450                         break;
451         }
452
453         return found;
454 }
455
456 static struct nouveau_encoder *
457 nouveau_connector_of_detect(struct drm_connector *connector)
458 {
459 #ifdef __powerpc__
460         struct drm_device *dev = connector->dev;
461         struct nouveau_connector *nv_connector = nouveau_connector(connector);
462         struct nouveau_encoder *nv_encoder;
463         struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);
464
465         if (!dn ||
466             !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
467               (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
468                 return NULL;
469
470         for_each_child_of_node(dn, cn) {
471                 const char *name = of_get_property(cn, "name", NULL);
472                 const void *edid = of_get_property(cn, "EDID", NULL);
473                 int idx = name ? name[strlen(name) - 1] - 'A' : 0;
474
475                 if (nv_encoder->dcb->i2c_index == idx && edid) {
476                         nv_connector->edid =
477                                 kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
478                         of_node_put(cn);
479                         return nv_encoder;
480                 }
481         }
482 #endif
483         return NULL;
484 }
485
486 static void
487 nouveau_connector_set_encoder(struct drm_connector *connector,
488                               struct nouveau_encoder *nv_encoder)
489 {
490         struct nouveau_connector *nv_connector = nouveau_connector(connector);
491         struct nouveau_drm *drm = nouveau_drm(connector->dev);
492         struct drm_device *dev = connector->dev;
493
494         if (nv_connector->detected_encoder == nv_encoder)
495                 return;
496         nv_connector->detected_encoder = nv_encoder;
497
498         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
499                 connector->interlace_allowed = true;
500                 connector->doublescan_allowed = true;
501         } else
502         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
503             nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
504                 connector->doublescan_allowed = false;
505                 connector->interlace_allowed = false;
506         } else {
507                 connector->doublescan_allowed = true;
508                 if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
509                     (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
510                      (dev->pdev->device & 0x0ff0) != 0x0100 &&
511                      (dev->pdev->device & 0x0ff0) != 0x0150))
512                         /* HW is broken */
513                         connector->interlace_allowed = false;
514                 else
515                         connector->interlace_allowed = true;
516         }
517
518         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
519                 drm_object_property_set_value(&connector->base,
520                         dev->mode_config.dvi_i_subconnector_property,
521                         nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
522                         DRM_MODE_SUBCONNECTOR_DVID :
523                         DRM_MODE_SUBCONNECTOR_DVIA);
524         }
525 }
526
527 static enum drm_connector_status
528 nouveau_connector_detect(struct drm_connector *connector, bool force)
529 {
530         struct drm_device *dev = connector->dev;
531         struct nouveau_drm *drm = nouveau_drm(dev);
532         struct nouveau_connector *nv_connector = nouveau_connector(connector);
533         struct nouveau_encoder *nv_encoder = NULL;
534         struct nouveau_encoder *nv_partner;
535         struct i2c_adapter *i2c;
536         int type;
537         int ret;
538         enum drm_connector_status conn_status = connector_status_disconnected;
539
540         /* Cleanup the previous EDID block. */
541         if (nv_connector->edid) {
542                 drm_connector_update_edid_property(connector, NULL);
543                 kfree(nv_connector->edid);
544                 nv_connector->edid = NULL;
545         }
546
547         /* Outputs are only polled while runtime active, so resuming the
548          * device here is unnecessary (and would deadlock upon runtime suspend
549          * because it waits for polling to finish). We do however, want to
550          * prevent the autosuspend timer from elapsing during this operation
551          * if possible.
552          */
553         if (drm_kms_helper_is_poll_worker()) {
554                 pm_runtime_get_noresume(dev->dev);
555         } else {
556                 ret = pm_runtime_get_sync(dev->dev);
557                 if (ret < 0 && ret != -EACCES)
558                         return conn_status;
559         }
560
561         nv_encoder = nouveau_connector_ddc_detect(connector);
562         if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
563                 if ((vga_switcheroo_handler_flags() &
564                      VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
565                     nv_connector->type == DCB_CONNECTOR_LVDS)
566                         nv_connector->edid = drm_get_edid_switcheroo(connector,
567                                                                      i2c);
568                 else
569                         nv_connector->edid = drm_get_edid(connector, i2c);
570
571                 drm_connector_update_edid_property(connector,
572                                                         nv_connector->edid);
573                 if (!nv_connector->edid) {
574                         NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
575                                  connector->name);
576                         goto detect_analog;
577                 }
578
579                 /* Override encoder type for DVI-I based on whether EDID
580                  * says the display is digital or analog, both use the
581                  * same i2c channel so the value returned from ddc_detect
582                  * isn't necessarily correct.
583                  */
584                 nv_partner = NULL;
585                 if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
586                         nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
587                 if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
588                         nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
589
590                 if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
591                                     nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
592                                    (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
593                                     nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
594                         if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
595                                 type = DCB_OUTPUT_TMDS;
596                         else
597                                 type = DCB_OUTPUT_ANALOG;
598
599                         nv_encoder = find_encoder(connector, type);
600                 }
601
602                 nouveau_connector_set_encoder(connector, nv_encoder);
603                 conn_status = connector_status_connected;
604                 drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
605                 goto out;
606         }
607
608         nv_encoder = nouveau_connector_of_detect(connector);
609         if (nv_encoder) {
610                 nouveau_connector_set_encoder(connector, nv_encoder);
611                 conn_status = connector_status_connected;
612                 goto out;
613         }
614
615 detect_analog:
616         nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
617         if (!nv_encoder && !nouveau_tv_disable)
618                 nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
619         if (nv_encoder && force) {
620                 struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
621                 const struct drm_encoder_helper_funcs *helper =
622                                                 encoder->helper_private;
623
624                 if (helper->detect(encoder, connector) ==
625                                                 connector_status_connected) {
626                         nouveau_connector_set_encoder(connector, nv_encoder);
627                         conn_status = connector_status_connected;
628                         goto out;
629                 }
630
631         }
632
633  out:
634
635         pm_runtime_mark_last_busy(dev->dev);
636         pm_runtime_put_autosuspend(dev->dev);
637
638         return conn_status;
639 }
640
641 static enum drm_connector_status
642 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
643 {
644         struct drm_device *dev = connector->dev;
645         struct nouveau_drm *drm = nouveau_drm(dev);
646         struct nouveau_connector *nv_connector = nouveau_connector(connector);
647         struct nouveau_encoder *nv_encoder = NULL;
648         enum drm_connector_status status = connector_status_disconnected;
649
650         /* Cleanup the previous EDID block. */
651         if (nv_connector->edid) {
652                 drm_connector_update_edid_property(connector, NULL);
653                 kfree(nv_connector->edid);
654                 nv_connector->edid = NULL;
655         }
656
657         nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
658         if (!nv_encoder)
659                 return connector_status_disconnected;
660
661         /* Try retrieving EDID via DDC */
662         if (!drm->vbios.fp_no_ddc) {
663                 status = nouveau_connector_detect(connector, force);
664                 if (status == connector_status_connected)
665                         goto out;
666         }
667
668         /* On some laptops (Sony, i'm looking at you) there appears to
669          * be no direct way of accessing the panel's EDID.  The only
670          * option available to us appears to be to ask ACPI for help..
671          *
672          * It's important this check's before trying straps, one of the
673          * said manufacturer's laptops are configured in such a way
674          * the nouveau decides an entry in the VBIOS FP mode table is
675          * valid - it's not (rh#613284)
676          */
677         if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
678                 if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
679                         status = connector_status_connected;
680                         goto out;
681                 }
682         }
683
684         /* If no EDID found above, and the VBIOS indicates a hardcoded
685          * modeline is avalilable for the panel, set it as the panel's
686          * native mode and exit.
687          */
688         if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
689             nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
690                 status = connector_status_connected;
691                 goto out;
692         }
693
694         /* Still nothing, some VBIOS images have a hardcoded EDID block
695          * stored for the panel stored in them.
696          */
697         if (!drm->vbios.fp_no_ddc) {
698                 struct edid *edid =
699                         (struct edid *)nouveau_bios_embedded_edid(dev);
700                 if (edid) {
701                         nv_connector->edid =
702                                         kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
703                         if (nv_connector->edid)
704                                 status = connector_status_connected;
705                 }
706         }
707
708 out:
709 #if defined(CONFIG_ACPI_BUTTON) || \
710         (defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
711         if (status == connector_status_connected &&
712             !nouveau_ignorelid && !acpi_lid_open())
713                 status = connector_status_unknown;
714 #endif
715
716         drm_connector_update_edid_property(connector, nv_connector->edid);
717         nouveau_connector_set_encoder(connector, nv_encoder);
718         return status;
719 }
720
721 static void
722 nouveau_connector_force(struct drm_connector *connector)
723 {
724         struct nouveau_drm *drm = nouveau_drm(connector->dev);
725         struct nouveau_connector *nv_connector = nouveau_connector(connector);
726         struct nouveau_encoder *nv_encoder;
727         int type;
728
729         if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
730                 if (connector->force == DRM_FORCE_ON_DIGITAL)
731                         type = DCB_OUTPUT_TMDS;
732                 else
733                         type = DCB_OUTPUT_ANALOG;
734         } else
735                 type = DCB_OUTPUT_ANY;
736
737         nv_encoder = find_encoder(connector, type);
738         if (!nv_encoder) {
739                 NV_ERROR(drm, "can't find encoder to force %s on!\n",
740                          connector->name);
741                 connector->status = connector_status_disconnected;
742                 return;
743         }
744
745         nouveau_connector_set_encoder(connector, nv_encoder);
746 }
747
748 static int
749 nouveau_connector_set_property(struct drm_connector *connector,
750                                struct drm_property *property, uint64_t value)
751 {
752         struct nouveau_conn_atom *asyc = nouveau_conn_atom(connector->state);
753         struct nouveau_connector *nv_connector = nouveau_connector(connector);
754         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
755         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
756         int ret;
757
758         ret = connector->funcs->atomic_set_property(&nv_connector->base,
759                                                     &asyc->state,
760                                                     property, value);
761         if (ret) {
762                 if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
763                         return get_slave_funcs(encoder)->set_property(
764                                 encoder, connector, property, value);
765                 return ret;
766         }
767
768         nv_connector->scaling_mode = asyc->scaler.mode;
769         nv_connector->dithering_mode = asyc->dither.mode;
770
771         if (connector->encoder && connector->encoder->crtc) {
772                 ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
773                                               &connector->encoder->crtc->mode,
774                                                connector->encoder->crtc->x,
775                                                connector->encoder->crtc->y,
776                                                NULL);
777                 if (!ret)
778                         return -EINVAL;
779         }
780
781         return 0;
782 }
783
784 struct moderec {
785         int hdisplay;
786         int vdisplay;
787 };
788
789 static struct moderec scaler_modes[] = {
790         { 1920, 1200 },
791         { 1920, 1080 },
792         { 1680, 1050 },
793         { 1600, 1200 },
794         { 1400, 1050 },
795         { 1280, 1024 },
796         { 1280, 960 },
797         { 1152, 864 },
798         { 1024, 768 },
799         { 800, 600 },
800         { 720, 400 },
801         { 640, 480 },
802         { 640, 400 },
803         { 640, 350 },
804         {}
805 };
806
807 static int
808 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
809 {
810         struct nouveau_connector *nv_connector = nouveau_connector(connector);
811         struct drm_display_mode *native = nv_connector->native_mode, *m;
812         struct drm_device *dev = connector->dev;
813         struct moderec *mode = &scaler_modes[0];
814         int modes = 0;
815
816         if (!native)
817                 return 0;
818
819         while (mode->hdisplay) {
820                 if (mode->hdisplay <= native->hdisplay &&
821                     mode->vdisplay <= native->vdisplay &&
822                     (mode->hdisplay != native->hdisplay ||
823                      mode->vdisplay != native->vdisplay)) {
824                         m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
825                                          drm_mode_vrefresh(native), false,
826                                          false, false);
827                         if (!m)
828                                 continue;
829
830                         drm_mode_probed_add(connector, m);
831                         modes++;
832                 }
833
834                 mode++;
835         }
836
837         return modes;
838 }
839
840 static void
841 nouveau_connector_detect_depth(struct drm_connector *connector)
842 {
843         struct nouveau_drm *drm = nouveau_drm(connector->dev);
844         struct nouveau_connector *nv_connector = nouveau_connector(connector);
845         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
846         struct nvbios *bios = &drm->vbios;
847         struct drm_display_mode *mode = nv_connector->native_mode;
848         bool duallink;
849
850         /* if the edid is feeling nice enough to provide this info, use it */
851         if (nv_connector->edid && connector->display_info.bpc)
852                 return;
853
854         /* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
855         if (nv_connector->type == DCB_CONNECTOR_eDP) {
856                 connector->display_info.bpc = 6;
857                 return;
858         }
859
860         /* we're out of options unless we're LVDS, default to 8bpc */
861         if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
862                 connector->display_info.bpc = 8;
863                 return;
864         }
865
866         connector->display_info.bpc = 6;
867
868         /* LVDS: panel straps */
869         if (bios->fp_no_ddc) {
870                 if (bios->fp.if_is_24bit)
871                         connector->display_info.bpc = 8;
872                 return;
873         }
874
875         /* LVDS: DDC panel, need to first determine the number of links to
876          * know which if_is_24bit flag to check...
877          */
878         if (nv_connector->edid &&
879             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
880                 duallink = ((u8 *)nv_connector->edid)[121] == 2;
881         else
882                 duallink = mode->clock >= bios->fp.duallink_transition_clk;
883
884         if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
885             ( duallink && (bios->fp.strapless_is_24bit & 2)))
886                 connector->display_info.bpc = 8;
887 }
888
889 static int
890 nouveau_connector_late_register(struct drm_connector *connector)
891 {
892         int ret;
893
894         ret = nouveau_backlight_init(connector);
895
896         return ret;
897 }
898
899 static void
900 nouveau_connector_early_unregister(struct drm_connector *connector)
901 {
902         nouveau_backlight_fini(connector);
903 }
904
905 static int
906 nouveau_connector_get_modes(struct drm_connector *connector)
907 {
908         struct drm_device *dev = connector->dev;
909         struct nouveau_drm *drm = nouveau_drm(dev);
910         struct nouveau_connector *nv_connector = nouveau_connector(connector);
911         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
912         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
913         int ret = 0;
914
915         /* destroy the native mode, the attached monitor could have changed.
916          */
917         if (nv_connector->native_mode) {
918                 drm_mode_destroy(dev, nv_connector->native_mode);
919                 nv_connector->native_mode = NULL;
920         }
921
922         if (nv_connector->edid)
923                 ret = drm_add_edid_modes(connector, nv_connector->edid);
924         else
925         if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
926             (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
927              drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
928                 struct drm_display_mode mode;
929
930                 nouveau_bios_fp_mode(dev, &mode);
931                 nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
932         }
933
934         /* Determine display colour depth for everything except LVDS now,
935          * DP requires this before mode_valid() is called.
936          */
937         if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
938                 nouveau_connector_detect_depth(connector);
939
940         /* Find the native mode if this is a digital panel, if we didn't
941          * find any modes through DDC previously add the native mode to
942          * the list of modes.
943          */
944         if (!nv_connector->native_mode)
945                 nv_connector->native_mode = nouveau_conn_native_mode(connector);
946         if (ret == 0 && nv_connector->native_mode) {
947                 struct drm_display_mode *mode;
948
949                 mode = drm_mode_duplicate(dev, nv_connector->native_mode);
950                 drm_mode_probed_add(connector, mode);
951                 ret = 1;
952         }
953
954         /* Determine LVDS colour depth, must happen after determining
955          * "native" mode as some VBIOS tables require us to use the
956          * pixel clock as part of the lookup...
957          */
958         if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
959                 nouveau_connector_detect_depth(connector);
960
961         if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
962                 ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
963
964         if (nv_connector->type == DCB_CONNECTOR_LVDS ||
965             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
966             nv_connector->type == DCB_CONNECTOR_eDP)
967                 ret += nouveau_connector_scaler_modes_add(connector);
968
969         return ret;
970 }
971
972 static unsigned
973 get_tmds_link_bandwidth(struct drm_connector *connector)
974 {
975         struct nouveau_connector *nv_connector = nouveau_connector(connector);
976         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
977         struct nouveau_drm *drm = nouveau_drm(connector->dev);
978         struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
979         struct drm_display_info *info = NULL;
980         unsigned duallink_scale =
981                 nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
982
983         if (drm_detect_hdmi_monitor(nv_connector->edid)) {
984                 info = &nv_connector->base.display_info;
985                 duallink_scale = 1;
986         }
987
988         if (info) {
989                 if (nouveau_hdmimhz > 0)
990                         return nouveau_hdmimhz * 1000;
991                 /* Note: these limits are conservative, some Fermi's
992                  * can do 297 MHz. Unclear how this can be determined.
993                  */
994                 if (drm->client.device.info.chipset >= 0x120) {
995                         const int max_tmds_clock =
996                                 info->hdmi.scdc.scrambling.supported ?
997                                 594000 : 340000;
998                         return info->max_tmds_clock ?
999                                 min(info->max_tmds_clock, max_tmds_clock) :
1000                                 max_tmds_clock;
1001                 }
1002                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1003                         return 297000;
1004                 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1005                         return 225000;
1006         }
1007
1008         if (dcb->location != DCB_LOC_ON_CHIP ||
1009             drm->client.device.info.chipset >= 0x46)
1010                 return 165000 * duallink_scale;
1011         else if (drm->client.device.info.chipset >= 0x40)
1012                 return 155000 * duallink_scale;
1013         else if (drm->client.device.info.chipset >= 0x18)
1014                 return 135000 * duallink_scale;
1015         else
1016                 return 112000 * duallink_scale;
1017 }
1018
1019 static enum drm_mode_status
1020 nouveau_connector_mode_valid(struct drm_connector *connector,
1021                              struct drm_display_mode *mode)
1022 {
1023         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1024         struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1025         struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1026         unsigned min_clock = 25000, max_clock = min_clock;
1027         unsigned clock = mode->clock;
1028
1029         switch (nv_encoder->dcb->type) {
1030         case DCB_OUTPUT_LVDS:
1031                 if (nv_connector->native_mode &&
1032                     (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1033                      mode->vdisplay > nv_connector->native_mode->vdisplay))
1034                         return MODE_PANEL;
1035
1036                 min_clock = 0;
1037                 max_clock = 400000;
1038                 break;
1039         case DCB_OUTPUT_TMDS:
1040                 max_clock = get_tmds_link_bandwidth(connector);
1041                 break;
1042         case DCB_OUTPUT_ANALOG:
1043                 max_clock = nv_encoder->dcb->crtconf.maxfreq;
1044                 if (!max_clock)
1045                         max_clock = 350000;
1046                 break;
1047         case DCB_OUTPUT_TV:
1048                 return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1049         case DCB_OUTPUT_DP:
1050                 max_clock  = nv_encoder->dp.link_nr;
1051                 max_clock *= nv_encoder->dp.link_bw;
1052                 clock = clock * (connector->display_info.bpc * 3) / 10;
1053                 break;
1054         default:
1055                 BUG();
1056                 return MODE_BAD;
1057         }
1058
1059         if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1060                 clock *= 2;
1061
1062         if (clock < min_clock)
1063                 return MODE_CLOCK_LOW;
1064
1065         if (clock > max_clock)
1066                 return MODE_CLOCK_HIGH;
1067
1068         return MODE_OK;
1069 }
1070
1071 static struct drm_encoder *
1072 nouveau_connector_best_encoder(struct drm_connector *connector)
1073 {
1074         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1075
1076         if (nv_connector->detected_encoder)
1077                 return to_drm_encoder(nv_connector->detected_encoder);
1078
1079         return NULL;
1080 }
1081
1082 static const struct drm_connector_helper_funcs
1083 nouveau_connector_helper_funcs = {
1084         .get_modes = nouveau_connector_get_modes,
1085         .mode_valid = nouveau_connector_mode_valid,
1086         .best_encoder = nouveau_connector_best_encoder,
1087 };
1088
1089 static const struct drm_connector_funcs
1090 nouveau_connector_funcs = {
1091         .dpms = drm_helper_connector_dpms,
1092         .reset = nouveau_conn_reset,
1093         .detect = nouveau_connector_detect,
1094         .force = nouveau_connector_force,
1095         .fill_modes = drm_helper_probe_single_connector_modes,
1096         .set_property = nouveau_connector_set_property,
1097         .destroy = nouveau_connector_destroy,
1098         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1099         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1100         .atomic_set_property = nouveau_conn_atomic_set_property,
1101         .atomic_get_property = nouveau_conn_atomic_get_property,
1102         .late_register = nouveau_connector_late_register,
1103         .early_unregister = nouveau_connector_early_unregister,
1104 };
1105
1106 static const struct drm_connector_funcs
1107 nouveau_connector_funcs_lvds = {
1108         .dpms = drm_helper_connector_dpms,
1109         .reset = nouveau_conn_reset,
1110         .detect = nouveau_connector_detect_lvds,
1111         .force = nouveau_connector_force,
1112         .fill_modes = drm_helper_probe_single_connector_modes,
1113         .set_property = nouveau_connector_set_property,
1114         .destroy = nouveau_connector_destroy,
1115         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1116         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1117         .atomic_set_property = nouveau_conn_atomic_set_property,
1118         .atomic_get_property = nouveau_conn_atomic_get_property,
1119         .late_register = nouveau_connector_late_register,
1120         .early_unregister = nouveau_connector_early_unregister,
1121 };
1122
1123 static int
1124 nouveau_connector_hotplug(struct nvif_notify *notify)
1125 {
1126         struct nouveau_connector *nv_connector =
1127                 container_of(notify, typeof(*nv_connector), hpd);
1128         struct drm_connector *connector = &nv_connector->base;
1129         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1130         const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1131         const char *name = connector->name;
1132         struct nouveau_encoder *nv_encoder;
1133         int ret;
1134
1135         ret = pm_runtime_get(drm->dev->dev);
1136         if (ret == 0) {
1137                 /* We can't block here if there's a pending PM request
1138                  * running, as we'll deadlock nouveau_display_fini() when it
1139                  * calls nvif_put() on our nvif_notify struct. So, simply
1140                  * defer the hotplug event until the device finishes resuming
1141                  */
1142                 NV_DEBUG(drm, "Deferring HPD on %s until runtime resume\n",
1143                          name);
1144                 schedule_work(&drm->hpd_work);
1145
1146                 pm_runtime_put_noidle(drm->dev->dev);
1147                 return NVIF_NOTIFY_KEEP;
1148         } else if (ret != 1 && ret != -EACCES) {
1149                 NV_WARN(drm, "HPD on %s dropped due to RPM failure: %d\n",
1150                         name, ret);
1151                 return NVIF_NOTIFY_DROP;
1152         }
1153
1154         if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1155                 NV_DEBUG(drm, "service %s\n", name);
1156                 drm_dp_cec_irq(&nv_connector->aux);
1157                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP)))
1158                         nv50_mstm_service(nv_encoder->dp.mstm);
1159         } else {
1160                 bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1161
1162                 if (!plugged)
1163                         drm_dp_cec_unset_edid(&nv_connector->aux);
1164                 NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
1165                 if ((nv_encoder = find_encoder(connector, DCB_OUTPUT_DP))) {
1166                         if (!plugged)
1167                                 nv50_mstm_remove(nv_encoder->dp.mstm);
1168                 }
1169
1170                 drm_helper_hpd_irq_event(connector->dev);
1171         }
1172
1173         pm_runtime_mark_last_busy(drm->dev->dev);
1174         pm_runtime_put_autosuspend(drm->dev->dev);
1175         return NVIF_NOTIFY_KEEP;
1176 }
1177
1178 static ssize_t
1179 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1180 {
1181         struct nouveau_connector *nv_connector =
1182                 container_of(obj, typeof(*nv_connector), aux);
1183         struct nouveau_encoder *nv_encoder;
1184         struct nvkm_i2c_aux *aux;
1185         u8 size = msg->size;
1186         int ret;
1187
1188         nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1189         if (!nv_encoder || !(aux = nv_encoder->aux))
1190                 return -ENODEV;
1191         if (WARN_ON(msg->size > 16))
1192                 return -E2BIG;
1193
1194         ret = nvkm_i2c_aux_acquire(aux);
1195         if (ret)
1196                 return ret;
1197
1198         ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1199                                 msg->buffer, &size);
1200         nvkm_i2c_aux_release(aux);
1201         if (ret >= 0) {
1202                 msg->reply = ret;
1203                 return size;
1204         }
1205
1206         return ret;
1207 }
1208
1209 static int
1210 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1211 {
1212         switch (dcb) {
1213         case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1214         case DCB_CONNECTOR_TV_0     :
1215         case DCB_CONNECTOR_TV_1     :
1216         case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1217         case DCB_CONNECTOR_DMS59_0  :
1218         case DCB_CONNECTOR_DMS59_1  :
1219         case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1220         case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1221         case DCB_CONNECTOR_LVDS     :
1222         case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1223         case DCB_CONNECTOR_DMS59_DP0:
1224         case DCB_CONNECTOR_DMS59_DP1:
1225         case DCB_CONNECTOR_DP       :
1226         case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1227         case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1228         case DCB_CONNECTOR_HDMI_0   :
1229         case DCB_CONNECTOR_HDMI_1   :
1230         case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1231         case DCB_CONNECTOR_WFD      : return DRM_MODE_CONNECTOR_VIRTUAL;
1232         default:
1233                 break;
1234         }
1235
1236         return DRM_MODE_CONNECTOR_Unknown;
1237 }
1238
1239 struct drm_connector *
1240 nouveau_connector_create(struct drm_device *dev,
1241                          const struct dcb_output *dcbe)
1242 {
1243         const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1244         struct nouveau_drm *drm = nouveau_drm(dev);
1245         struct nouveau_display *disp = nouveau_display(dev);
1246         struct nouveau_connector *nv_connector = NULL;
1247         struct drm_connector *connector;
1248         struct drm_connector_list_iter conn_iter;
1249         char aux_name[48] = {0};
1250         int index = dcbe->connector;
1251         int type, ret = 0;
1252         bool dummy;
1253
1254         drm_connector_list_iter_begin(dev, &conn_iter);
1255         nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1256                 nv_connector = nouveau_connector(connector);
1257                 if (nv_connector->index == index) {
1258                         drm_connector_list_iter_end(&conn_iter);
1259                         return connector;
1260                 }
1261         }
1262         drm_connector_list_iter_end(&conn_iter);
1263
1264         nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1265         if (!nv_connector)
1266                 return ERR_PTR(-ENOMEM);
1267
1268         connector = &nv_connector->base;
1269         nv_connector->index = index;
1270
1271         /* attempt to parse vbios connector type and hotplug gpio */
1272         nv_connector->dcb = olddcb_conn(dev, index);
1273         if (nv_connector->dcb) {
1274                 u32 entry = ROM16(nv_connector->dcb[0]);
1275                 if (olddcb_conntab(dev)[3] >= 4)
1276                         entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1277
1278                 nv_connector->type = nv_connector->dcb[0];
1279                 if (drm_conntype_from_dcb(nv_connector->type) ==
1280                                           DRM_MODE_CONNECTOR_Unknown) {
1281                         NV_WARN(drm, "unknown connector type %02x\n",
1282                                 nv_connector->type);
1283                         nv_connector->type = DCB_CONNECTOR_NONE;
1284                 }
1285
1286                 /* Gigabyte NX85T */
1287                 if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1288                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1289                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1290                 }
1291
1292                 /* Gigabyte GV-NX86T512H */
1293                 if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1294                         if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1295                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1296                 }
1297         } else {
1298                 nv_connector->type = DCB_CONNECTOR_NONE;
1299         }
1300
1301         /* no vbios data, or an unknown dcb connector type - attempt to
1302          * figure out something suitable ourselves
1303          */
1304         if (nv_connector->type == DCB_CONNECTOR_NONE) {
1305                 struct nouveau_drm *drm = nouveau_drm(dev);
1306                 struct dcb_table *dcbt = &drm->vbios.dcb;
1307                 u32 encoders = 0;
1308                 int i;
1309
1310                 for (i = 0; i < dcbt->entries; i++) {
1311                         if (dcbt->entry[i].connector == nv_connector->index)
1312                                 encoders |= (1 << dcbt->entry[i].type);
1313                 }
1314
1315                 if (encoders & (1 << DCB_OUTPUT_DP)) {
1316                         if (encoders & (1 << DCB_OUTPUT_TMDS))
1317                                 nv_connector->type = DCB_CONNECTOR_DP;
1318                         else
1319                                 nv_connector->type = DCB_CONNECTOR_eDP;
1320                 } else
1321                 if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1322                         if (encoders & (1 << DCB_OUTPUT_ANALOG))
1323                                 nv_connector->type = DCB_CONNECTOR_DVI_I;
1324                         else
1325                                 nv_connector->type = DCB_CONNECTOR_DVI_D;
1326                 } else
1327                 if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1328                         nv_connector->type = DCB_CONNECTOR_VGA;
1329                 } else
1330                 if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1331                         nv_connector->type = DCB_CONNECTOR_LVDS;
1332                 } else
1333                 if (encoders & (1 << DCB_OUTPUT_TV)) {
1334                         nv_connector->type = DCB_CONNECTOR_TV_0;
1335                 }
1336         }
1337
1338         switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1339         case DRM_MODE_CONNECTOR_LVDS:
1340                 ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1341                 if (ret) {
1342                         NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1343                         kfree(nv_connector);
1344                         return ERR_PTR(ret);
1345                 }
1346
1347                 funcs = &nouveau_connector_funcs_lvds;
1348                 break;
1349         case DRM_MODE_CONNECTOR_DisplayPort:
1350         case DRM_MODE_CONNECTOR_eDP:
1351                 nv_connector->aux.dev = connector->kdev;
1352                 nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1353                 snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1354                          dcbe->hasht, dcbe->hashm);
1355                 nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1356                 ret = drm_dp_aux_register(&nv_connector->aux);
1357                 if (ret) {
1358                         NV_ERROR(drm, "failed to register aux channel\n");
1359                         kfree(nv_connector);
1360                         return ERR_PTR(ret);
1361                 }
1362                 funcs = &nouveau_connector_funcs;
1363                 break;
1364         default:
1365                 funcs = &nouveau_connector_funcs;
1366                 break;
1367         }
1368
1369         /* HDMI 3D support */
1370         if ((disp->disp.object.oclass >= G82_DISP)
1371             && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1372                 || (type == DRM_MODE_CONNECTOR_eDP)
1373                 || (type == DRM_MODE_CONNECTOR_HDMIA)))
1374                 connector->stereo_allowed = true;
1375
1376         /* defaults, will get overridden in detect() */
1377         connector->interlace_allowed = false;
1378         connector->doublescan_allowed = false;
1379
1380         drm_connector_init(dev, connector, funcs, type);
1381         drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1382
1383         connector->funcs->reset(connector);
1384         nouveau_conn_attach_properties(connector);
1385
1386         /* Default scaling mode */
1387         switch (nv_connector->type) {
1388         case DCB_CONNECTOR_LVDS:
1389         case DCB_CONNECTOR_LVDS_SPWG:
1390         case DCB_CONNECTOR_eDP:
1391                 /* see note in nouveau_connector_set_property() */
1392                 if (disp->disp.object.oclass < NV50_DISP) {
1393                         nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1394                         break;
1395                 }
1396                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1397                 break;
1398         default:
1399                 nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1400                 break;
1401         }
1402
1403         /* dithering properties */
1404         switch (nv_connector->type) {
1405         case DCB_CONNECTOR_TV_0:
1406         case DCB_CONNECTOR_TV_1:
1407         case DCB_CONNECTOR_TV_3:
1408         case DCB_CONNECTOR_VGA:
1409                 break;
1410         default:
1411                 nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1412                 break;
1413         }
1414
1415         switch (type) {
1416         case DRM_MODE_CONNECTOR_DisplayPort:
1417         case DRM_MODE_CONNECTOR_eDP:
1418                 drm_dp_cec_register_connector(&nv_connector->aux, connector);
1419                 break;
1420         }
1421
1422         ret = nvif_notify_init(&disp->disp.object, nouveau_connector_hotplug,
1423                                true, NV04_DISP_NTFY_CONN,
1424                                &(struct nvif_notify_conn_req_v0) {
1425                                 .mask = NVIF_NOTIFY_CONN_V0_ANY,
1426                                 .conn = index,
1427                                },
1428                                sizeof(struct nvif_notify_conn_req_v0),
1429                                sizeof(struct nvif_notify_conn_rep_v0),
1430                                &nv_connector->hpd);
1431         if (ret)
1432                 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1433         else
1434                 connector->polled = DRM_CONNECTOR_POLL_HPD;
1435
1436         drm_connector_register(connector);
1437         return connector;
1438 }