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 *
nouveau_conn_native_mode(struct drm_connector * connector)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
nouveau_conn_atomic_get_property(struct drm_connector * connector,const struct drm_connector_state * state,struct drm_property * property,u64 * val)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
nouveau_conn_atomic_set_property(struct drm_connector * connector,struct drm_connector_state * state,struct drm_property * property,u64 val)129 nouveau_conn_atomic_set_property(struct drm_connector *connector,
130 				 struct drm_connector_state *state,
131 				 struct drm_property *property, u64 val)
132 {
133 	struct drm_device *dev = connector->dev;
134 	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
135 	struct nouveau_display *disp = nouveau_display(dev);
136 
137 	if (property == dev->mode_config.scaling_mode_property) {
138 		switch (val) {
139 		case DRM_MODE_SCALE_NONE:
140 			/* We allow 'None' for EDID modes, even on a fixed
141 			 * panel (some exist with support for lower refresh
142 			 * rates, which people might want to use for power-
143 			 * saving purposes).
144 			 *
145 			 * Non-EDID modes will force the use of GPU scaling
146 			 * to the native mode regardless of this setting.
147 			 */
148 			switch (connector->connector_type) {
149 			case DRM_MODE_CONNECTOR_LVDS:
150 			case DRM_MODE_CONNECTOR_eDP:
151 				/* ... except prior to G80, where the code
152 				 * doesn't support such things.
153 				 */
154 				if (disp->disp.object.oclass < NV50_DISP)
155 					return -EINVAL;
156 				break;
157 			default:
158 				break;
159 			}
160 			break;
161 		case DRM_MODE_SCALE_FULLSCREEN:
162 		case DRM_MODE_SCALE_CENTER:
163 		case DRM_MODE_SCALE_ASPECT:
164 			break;
165 		default:
166 			return -EINVAL;
167 		}
168 
169 		if (asyc->scaler.mode != val) {
170 			asyc->scaler.mode = val;
171 			asyc->set.scaler = true;
172 		}
173 	} else
174 	if (property == disp->underscan_property) {
175 		if (asyc->scaler.underscan.mode != val) {
176 			asyc->scaler.underscan.mode = val;
177 			asyc->set.scaler = true;
178 		}
179 	} else
180 	if (property == disp->underscan_hborder_property) {
181 		if (asyc->scaler.underscan.hborder != val) {
182 			asyc->scaler.underscan.hborder = val;
183 			asyc->set.scaler = true;
184 		}
185 	} else
186 	if (property == disp->underscan_vborder_property) {
187 		if (asyc->scaler.underscan.vborder != val) {
188 			asyc->scaler.underscan.vborder = val;
189 			asyc->set.scaler = true;
190 		}
191 	} else
192 	if (property == disp->dithering_mode) {
193 		if (asyc->dither.mode != val) {
194 			asyc->dither.mode = val;
195 			asyc->set.dither = true;
196 		}
197 	} else
198 	if (property == disp->dithering_depth) {
199 		if (asyc->dither.mode != val) {
200 			asyc->dither.depth = val;
201 			asyc->set.dither = true;
202 		}
203 	} else
204 	if (property == disp->vibrant_hue_property) {
205 		if (asyc->procamp.vibrant_hue != val) {
206 			asyc->procamp.vibrant_hue = val;
207 			asyc->set.procamp = true;
208 		}
209 	} else
210 	if (property == disp->color_vibrance_property) {
211 		if (asyc->procamp.color_vibrance != val) {
212 			asyc->procamp.color_vibrance = val;
213 			asyc->set.procamp = true;
214 		}
215 	} else {
216 		return -EINVAL;
217 	}
218 
219 	return 0;
220 }
221 
222 void
nouveau_conn_atomic_destroy_state(struct drm_connector * connector,struct drm_connector_state * state)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 *
nouveau_conn_atomic_duplicate_state(struct drm_connector * connector)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
nouveau_conn_reset(struct drm_connector * connector)247 nouveau_conn_reset(struct drm_connector *connector)
248 {
249 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
250 	struct nouveau_conn_atom *asyc;
251 
252 	if (drm_drv_uses_atomic_modeset(connector->dev)) {
253 		if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
254 			return;
255 
256 		if (connector->state)
257 			nouveau_conn_atomic_destroy_state(connector,
258 							  connector->state);
259 
260 		__drm_atomic_helper_connector_reset(connector, &asyc->state);
261 	} else {
262 		asyc = &nv_connector->properties_state;
263 	}
264 
265 	asyc->dither.mode = DITHERING_MODE_AUTO;
266 	asyc->dither.depth = DITHERING_DEPTH_AUTO;
267 	asyc->scaler.mode = DRM_MODE_SCALE_NONE;
268 	asyc->scaler.underscan.mode = UNDERSCAN_OFF;
269 	asyc->procamp.color_vibrance = 150;
270 	asyc->procamp.vibrant_hue = 90;
271 
272 	if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
273 		switch (connector->connector_type) {
274 		case DRM_MODE_CONNECTOR_LVDS:
275 			/* See note in nouveau_conn_atomic_set_property(). */
276 			asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
277 			break;
278 		default:
279 			break;
280 		}
281 	}
282 }
283 
284 void
nouveau_conn_attach_properties(struct drm_connector * connector)285 nouveau_conn_attach_properties(struct drm_connector *connector)
286 {
287 	struct drm_device *dev = connector->dev;
288 	struct nouveau_display *disp = nouveau_display(dev);
289 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
290 	struct nouveau_conn_atom *armc;
291 
292 	if (drm_drv_uses_atomic_modeset(connector->dev))
293 		armc = nouveau_conn_atom(connector->state);
294 	else
295 		armc = &nv_connector->properties_state;
296 
297 	/* Init DVI-I specific properties. */
298 	if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
299 		drm_object_attach_property(&connector->base, dev->mode_config.
300 					   dvi_i_subconnector_property, 0);
301 
302 	/* Add overscan compensation options to digital outputs. */
303 	if (disp->underscan_property &&
304 	    (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
305 	     connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
306 	     connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
307 	     connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
308 		drm_object_attach_property(&connector->base,
309 					   disp->underscan_property,
310 					   UNDERSCAN_OFF);
311 		drm_object_attach_property(&connector->base,
312 					   disp->underscan_hborder_property, 0);
313 		drm_object_attach_property(&connector->base,
314 					   disp->underscan_vborder_property, 0);
315 	}
316 
317 	/* Add hue and saturation options. */
318 	if (disp->vibrant_hue_property)
319 		drm_object_attach_property(&connector->base,
320 					   disp->vibrant_hue_property,
321 					   armc->procamp.vibrant_hue);
322 	if (disp->color_vibrance_property)
323 		drm_object_attach_property(&connector->base,
324 					   disp->color_vibrance_property,
325 					   armc->procamp.color_vibrance);
326 
327 	/* Scaling mode property. */
328 	switch (connector->connector_type) {
329 	case DRM_MODE_CONNECTOR_TV:
330 		break;
331 	case DRM_MODE_CONNECTOR_VGA:
332 		if (disp->disp.object.oclass < NV50_DISP)
333 			break; /* Can only scale on DFPs. */
334 		fallthrough;
335 	default:
336 		drm_object_attach_property(&connector->base, dev->mode_config.
337 					   scaling_mode_property,
338 					   armc->scaler.mode);
339 		break;
340 	}
341 
342 	/* Dithering properties. */
343 	switch (connector->connector_type) {
344 	case DRM_MODE_CONNECTOR_TV:
345 	case DRM_MODE_CONNECTOR_VGA:
346 		break;
347 	default:
348 		if (disp->dithering_mode) {
349 			drm_object_attach_property(&connector->base,
350 						   disp->dithering_mode,
351 						   armc->dither.mode);
352 		}
353 		if (disp->dithering_depth) {
354 			drm_object_attach_property(&connector->base,
355 						   disp->dithering_depth,
356 						   armc->dither.depth);
357 		}
358 		break;
359 	}
360 }
361 
362 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
363 int nouveau_tv_disable = 0;
364 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
365 
366 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
367 int nouveau_ignorelid = 0;
368 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
369 
370 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
371 int nouveau_duallink = 1;
372 module_param_named(duallink, nouveau_duallink, int, 0400);
373 
374 MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
375 int nouveau_hdmimhz = 0;
376 module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
377 
378 struct nouveau_encoder *
find_encoder(struct drm_connector * connector,int type)379 find_encoder(struct drm_connector *connector, int type)
380 {
381 	struct nouveau_encoder *nv_encoder;
382 	struct drm_encoder *enc;
383 
384 	drm_connector_for_each_possible_encoder(connector, enc) {
385 		nv_encoder = nouveau_encoder(enc);
386 
387 		if (type == DCB_OUTPUT_ANY ||
388 		    (nv_encoder->dcb && nv_encoder->dcb->type == type))
389 			return nv_encoder;
390 	}
391 
392 	return NULL;
393 }
394 
395 static void
nouveau_connector_destroy(struct drm_connector * connector)396 nouveau_connector_destroy(struct drm_connector *connector)
397 {
398 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
399 	nvif_notify_dtor(&nv_connector->hpd);
400 	kfree(nv_connector->edid);
401 	drm_connector_unregister(connector);
402 	drm_connector_cleanup(connector);
403 	if (nv_connector->aux.transfer) {
404 		drm_dp_cec_unregister_connector(&nv_connector->aux);
405 		kfree(nv_connector->aux.name);
406 	}
407 	nvif_conn_dtor(&nv_connector->conn);
408 	kfree(connector);
409 }
410 
411 static struct nouveau_encoder *
nouveau_connector_ddc_detect(struct drm_connector * connector)412 nouveau_connector_ddc_detect(struct drm_connector *connector)
413 {
414 	struct drm_device *dev = connector->dev;
415 	struct pci_dev *pdev = to_pci_dev(dev->dev);
416 	struct nouveau_encoder *nv_encoder = NULL, *found = NULL;
417 	struct drm_encoder *encoder;
418 	int ret;
419 	bool switcheroo_ddc = false;
420 
421 	drm_connector_for_each_possible_encoder(connector, encoder) {
422 		nv_encoder = nouveau_encoder(encoder);
423 
424 		switch (nv_encoder->dcb->type) {
425 		case DCB_OUTPUT_DP:
426 			ret = nouveau_dp_detect(nouveau_connector(connector),
427 						nv_encoder);
428 			if (ret == NOUVEAU_DP_MST)
429 				return NULL;
430 			else if (ret == NOUVEAU_DP_SST)
431 				found = nv_encoder;
432 
433 			break;
434 		case DCB_OUTPUT_LVDS:
435 			switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
436 					    VGA_SWITCHEROO_CAN_SWITCH_DDC);
437 			fallthrough;
438 		default:
439 			if (!nv_encoder->i2c)
440 				break;
441 
442 			if (switcheroo_ddc)
443 				vga_switcheroo_lock_ddc(pdev);
444 			if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
445 				found = nv_encoder;
446 			if (switcheroo_ddc)
447 				vga_switcheroo_unlock_ddc(pdev);
448 
449 			break;
450 		}
451 		if (found)
452 			break;
453 	}
454 
455 	return found;
456 }
457 
458 static struct nouveau_encoder *
nouveau_connector_of_detect(struct drm_connector * connector)459 nouveau_connector_of_detect(struct drm_connector *connector)
460 {
461 #ifdef __powerpc__
462 	struct drm_device *dev = connector->dev;
463 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
464 	struct nouveau_encoder *nv_encoder;
465 	struct pci_dev *pdev = to_pci_dev(dev->dev);
466 	struct device_node *cn, *dn = pci_device_to_OF_node(pdev);
467 
468 	if (!dn ||
469 	    !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
470 	      (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
471 		return NULL;
472 
473 	for_each_child_of_node(dn, cn) {
474 		const char *name = of_get_property(cn, "name", NULL);
475 		const void *edid = of_get_property(cn, "EDID", NULL);
476 		int idx = name ? name[strlen(name) - 1] - 'A' : 0;
477 
478 		if (nv_encoder->dcb->i2c_index == idx && edid) {
479 			nv_connector->edid =
480 				kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
481 			of_node_put(cn);
482 			return nv_encoder;
483 		}
484 	}
485 #endif
486 	return NULL;
487 }
488 
489 static void
nouveau_connector_set_encoder(struct drm_connector * connector,struct nouveau_encoder * nv_encoder)490 nouveau_connector_set_encoder(struct drm_connector *connector,
491 			      struct nouveau_encoder *nv_encoder)
492 {
493 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
494 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
495 	struct drm_device *dev = connector->dev;
496 	struct pci_dev *pdev = to_pci_dev(dev->dev);
497 
498 	if (nv_connector->detected_encoder == nv_encoder)
499 		return;
500 	nv_connector->detected_encoder = nv_encoder;
501 
502 	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
503 		if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
504 			connector->interlace_allowed =
505 				nv_encoder->caps.dp_interlace;
506 		else
507 			connector->interlace_allowed =
508 				drm->client.device.info.family < NV_DEVICE_INFO_V0_VOLTA;
509 		connector->doublescan_allowed = true;
510 	} else
511 	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
512 	    nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
513 		connector->doublescan_allowed = false;
514 		connector->interlace_allowed = false;
515 	} else {
516 		connector->doublescan_allowed = true;
517 		if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
518 		    (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
519 		     (pdev->device & 0x0ff0) != 0x0100 &&
520 		     (pdev->device & 0x0ff0) != 0x0150))
521 			/* HW is broken */
522 			connector->interlace_allowed = false;
523 		else
524 			connector->interlace_allowed = true;
525 	}
526 
527 	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
528 		drm_object_property_set_value(&connector->base,
529 			dev->mode_config.dvi_i_subconnector_property,
530 			nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
531 			DRM_MODE_SUBCONNECTOR_DVID :
532 			DRM_MODE_SUBCONNECTOR_DVIA);
533 	}
534 }
535 
536 static void
nouveau_connector_set_edid(struct nouveau_connector * nv_connector,struct edid * edid)537 nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
538 			   struct edid *edid)
539 {
540 	if (nv_connector->edid != edid) {
541 		struct edid *old_edid = nv_connector->edid;
542 
543 		drm_connector_update_edid_property(&nv_connector->base, edid);
544 		kfree(old_edid);
545 		nv_connector->edid = edid;
546 	}
547 }
548 
549 static enum drm_connector_status
nouveau_connector_detect(struct drm_connector * connector,bool force)550 nouveau_connector_detect(struct drm_connector *connector, bool force)
551 {
552 	struct drm_device *dev = connector->dev;
553 	struct nouveau_drm *drm = nouveau_drm(dev);
554 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
555 	struct nouveau_encoder *nv_encoder = NULL;
556 	struct nouveau_encoder *nv_partner;
557 	struct i2c_adapter *i2c;
558 	int type;
559 	int ret;
560 	enum drm_connector_status conn_status = connector_status_disconnected;
561 
562 	/* Outputs are only polled while runtime active, so resuming the
563 	 * device here is unnecessary (and would deadlock upon runtime suspend
564 	 * because it waits for polling to finish). We do however, want to
565 	 * prevent the autosuspend timer from elapsing during this operation
566 	 * if possible.
567 	 */
568 	if (drm_kms_helper_is_poll_worker()) {
569 		pm_runtime_get_noresume(dev->dev);
570 	} else {
571 		ret = pm_runtime_get_sync(dev->dev);
572 		if (ret < 0 && ret != -EACCES) {
573 			pm_runtime_put_autosuspend(dev->dev);
574 			nouveau_connector_set_edid(nv_connector, NULL);
575 			return conn_status;
576 		}
577 	}
578 
579 	nv_encoder = nouveau_connector_ddc_detect(connector);
580 	if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
581 		struct edid *new_edid;
582 
583 		if ((vga_switcheroo_handler_flags() &
584 		     VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
585 		    nv_connector->type == DCB_CONNECTOR_LVDS)
586 			new_edid = drm_get_edid_switcheroo(connector, i2c);
587 		else
588 			new_edid = drm_get_edid(connector, i2c);
589 
590 		nouveau_connector_set_edid(nv_connector, new_edid);
591 		if (!nv_connector->edid) {
592 			NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
593 				 connector->name);
594 			goto detect_analog;
595 		}
596 
597 		/* Override encoder type for DVI-I based on whether EDID
598 		 * says the display is digital or analog, both use the
599 		 * same i2c channel so the value returned from ddc_detect
600 		 * isn't necessarily correct.
601 		 */
602 		nv_partner = NULL;
603 		if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
604 			nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
605 		if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
606 			nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
607 
608 		if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
609 				    nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
610 				   (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
611 				    nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
612 			if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
613 				type = DCB_OUTPUT_TMDS;
614 			else
615 				type = DCB_OUTPUT_ANALOG;
616 
617 			nv_encoder = find_encoder(connector, type);
618 		}
619 
620 		nouveau_connector_set_encoder(connector, nv_encoder);
621 		conn_status = connector_status_connected;
622 		drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
623 		goto out;
624 	} else {
625 		nouveau_connector_set_edid(nv_connector, NULL);
626 	}
627 
628 	nv_encoder = nouveau_connector_of_detect(connector);
629 	if (nv_encoder) {
630 		nouveau_connector_set_encoder(connector, nv_encoder);
631 		conn_status = connector_status_connected;
632 		goto out;
633 	}
634 
635 detect_analog:
636 	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
637 	if (!nv_encoder && !nouveau_tv_disable)
638 		nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
639 	if (nv_encoder && force) {
640 		struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
641 		const struct drm_encoder_helper_funcs *helper =
642 						encoder->helper_private;
643 
644 		if (helper->detect(encoder, connector) ==
645 						connector_status_connected) {
646 			nouveau_connector_set_encoder(connector, nv_encoder);
647 			conn_status = connector_status_connected;
648 			goto out;
649 		}
650 	}
651 
652  out:
653 	if (!nv_connector->edid)
654 		drm_dp_cec_unset_edid(&nv_connector->aux);
655 
656 	pm_runtime_mark_last_busy(dev->dev);
657 	pm_runtime_put_autosuspend(dev->dev);
658 
659 	return conn_status;
660 }
661 
662 static enum drm_connector_status
nouveau_connector_detect_lvds(struct drm_connector * connector,bool force)663 nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
664 {
665 	struct drm_device *dev = connector->dev;
666 	struct nouveau_drm *drm = nouveau_drm(dev);
667 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
668 	struct nouveau_encoder *nv_encoder = NULL;
669 	struct edid *edid = NULL;
670 	enum drm_connector_status status = connector_status_disconnected;
671 
672 	nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
673 	if (!nv_encoder)
674 		goto out;
675 
676 	/* Try retrieving EDID via DDC */
677 	if (!drm->vbios.fp_no_ddc) {
678 		status = nouveau_connector_detect(connector, force);
679 		if (status == connector_status_connected) {
680 			edid = nv_connector->edid;
681 			goto out;
682 		}
683 	}
684 
685 	/* On some laptops (Sony, i'm looking at you) there appears to
686 	 * be no direct way of accessing the panel's EDID.  The only
687 	 * option available to us appears to be to ask ACPI for help..
688 	 *
689 	 * It's important this check's before trying straps, one of the
690 	 * said manufacturer's laptops are configured in such a way
691 	 * the nouveau decides an entry in the VBIOS FP mode table is
692 	 * valid - it's not (rh#613284)
693 	 */
694 	if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
695 		edid = nouveau_acpi_edid(dev, connector);
696 		if (edid) {
697 			status = connector_status_connected;
698 			goto out;
699 		}
700 	}
701 
702 	/* If no EDID found above, and the VBIOS indicates a hardcoded
703 	 * modeline is avalilable for the panel, set it as the panel's
704 	 * native mode and exit.
705 	 */
706 	if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
707 	    nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
708 		status = connector_status_connected;
709 		goto out;
710 	}
711 
712 	/* Still nothing, some VBIOS images have a hardcoded EDID block
713 	 * stored for the panel stored in them.
714 	 */
715 	if (!drm->vbios.fp_no_ddc) {
716 		edid = (struct edid *)nouveau_bios_embedded_edid(dev);
717 		if (edid) {
718 			edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
719 			if (edid)
720 				status = connector_status_connected;
721 		}
722 	}
723 
724 out:
725 #if defined(CONFIG_ACPI_BUTTON) || \
726 	(defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
727 	if (status == connector_status_connected &&
728 	    !nouveau_ignorelid && !acpi_lid_open())
729 		status = connector_status_unknown;
730 #endif
731 
732 	nouveau_connector_set_edid(nv_connector, edid);
733 	nouveau_connector_set_encoder(connector, nv_encoder);
734 	return status;
735 }
736 
737 static void
nouveau_connector_force(struct drm_connector * connector)738 nouveau_connector_force(struct drm_connector *connector)
739 {
740 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
741 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
742 	struct nouveau_encoder *nv_encoder;
743 	int type;
744 
745 	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
746 		if (connector->force == DRM_FORCE_ON_DIGITAL)
747 			type = DCB_OUTPUT_TMDS;
748 		else
749 			type = DCB_OUTPUT_ANALOG;
750 	} else
751 		type = DCB_OUTPUT_ANY;
752 
753 	nv_encoder = find_encoder(connector, type);
754 	if (!nv_encoder) {
755 		NV_ERROR(drm, "can't find encoder to force %s on!\n",
756 			 connector->name);
757 		connector->status = connector_status_disconnected;
758 		return;
759 	}
760 
761 	nouveau_connector_set_encoder(connector, nv_encoder);
762 }
763 
764 static int
nouveau_connector_set_property(struct drm_connector * connector,struct drm_property * property,uint64_t value)765 nouveau_connector_set_property(struct drm_connector *connector,
766 			       struct drm_property *property, uint64_t value)
767 {
768 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
769 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
770 	struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
771 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
772 	int ret;
773 
774 	ret = connector->funcs->atomic_set_property(&nv_connector->base,
775 						    &asyc->state,
776 						    property, value);
777 	if (ret) {
778 		if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
779 			return get_slave_funcs(encoder)->set_property(
780 				encoder, connector, property, value);
781 		return ret;
782 	}
783 
784 	nv_connector->scaling_mode = asyc->scaler.mode;
785 	nv_connector->dithering_mode = asyc->dither.mode;
786 
787 	if (connector->encoder && connector->encoder->crtc) {
788 		ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
789 					      &connector->encoder->crtc->mode,
790 					       connector->encoder->crtc->x,
791 					       connector->encoder->crtc->y,
792 					       NULL);
793 		if (!ret)
794 			return -EINVAL;
795 	}
796 
797 	return 0;
798 }
799 
800 struct moderec {
801 	int hdisplay;
802 	int vdisplay;
803 };
804 
805 static struct moderec scaler_modes[] = {
806 	{ 1920, 1200 },
807 	{ 1920, 1080 },
808 	{ 1680, 1050 },
809 	{ 1600, 1200 },
810 	{ 1400, 1050 },
811 	{ 1280, 1024 },
812 	{ 1280, 960 },
813 	{ 1152, 864 },
814 	{ 1024, 768 },
815 	{ 800, 600 },
816 	{ 720, 400 },
817 	{ 640, 480 },
818 	{ 640, 400 },
819 	{ 640, 350 },
820 	{}
821 };
822 
823 static int
nouveau_connector_scaler_modes_add(struct drm_connector * connector)824 nouveau_connector_scaler_modes_add(struct drm_connector *connector)
825 {
826 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
827 	struct drm_display_mode *native = nv_connector->native_mode, *m;
828 	struct drm_device *dev = connector->dev;
829 	struct moderec *mode = &scaler_modes[0];
830 	int modes = 0;
831 
832 	if (!native)
833 		return 0;
834 
835 	while (mode->hdisplay) {
836 		if (mode->hdisplay <= native->hdisplay &&
837 		    mode->vdisplay <= native->vdisplay &&
838 		    (mode->hdisplay != native->hdisplay ||
839 		     mode->vdisplay != native->vdisplay)) {
840 			m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
841 					 drm_mode_vrefresh(native), false,
842 					 false, false);
843 			if (!m)
844 				continue;
845 
846 			drm_mode_probed_add(connector, m);
847 			modes++;
848 		}
849 
850 		mode++;
851 	}
852 
853 	return modes;
854 }
855 
856 static void
nouveau_connector_detect_depth(struct drm_connector * connector)857 nouveau_connector_detect_depth(struct drm_connector *connector)
858 {
859 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
860 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
861 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
862 	struct nvbios *bios = &drm->vbios;
863 	struct drm_display_mode *mode = nv_connector->native_mode;
864 	bool duallink;
865 
866 	/* if the edid is feeling nice enough to provide this info, use it */
867 	if (nv_connector->edid && connector->display_info.bpc)
868 		return;
869 
870 	/* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
871 	if (nv_connector->type == DCB_CONNECTOR_eDP) {
872 		connector->display_info.bpc = 6;
873 		return;
874 	}
875 
876 	/* we're out of options unless we're LVDS, default to 8bpc */
877 	if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
878 		connector->display_info.bpc = 8;
879 		return;
880 	}
881 
882 	connector->display_info.bpc = 6;
883 
884 	/* LVDS: panel straps */
885 	if (bios->fp_no_ddc) {
886 		if (bios->fp.if_is_24bit)
887 			connector->display_info.bpc = 8;
888 		return;
889 	}
890 
891 	/* LVDS: DDC panel, need to first determine the number of links to
892 	 * know which if_is_24bit flag to check...
893 	 */
894 	if (nv_connector->edid &&
895 	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
896 		duallink = ((u8 *)nv_connector->edid)[121] == 2;
897 	else
898 		duallink = mode->clock >= bios->fp.duallink_transition_clk;
899 
900 	if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
901 	    ( duallink && (bios->fp.strapless_is_24bit & 2)))
902 		connector->display_info.bpc = 8;
903 }
904 
905 static int
nouveau_connector_late_register(struct drm_connector * connector)906 nouveau_connector_late_register(struct drm_connector *connector)
907 {
908 	int ret;
909 
910 	ret = nouveau_backlight_init(connector);
911 	if (ret)
912 		return ret;
913 
914 	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
915 	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
916 		ret = drm_dp_aux_register(&nouveau_connector(connector)->aux);
917 		if (ret)
918 			goto backlight_fini;
919 	}
920 
921 	return 0;
922 backlight_fini:
923 	nouveau_backlight_fini(connector);
924 	return ret;
925 }
926 
927 static void
nouveau_connector_early_unregister(struct drm_connector * connector)928 nouveau_connector_early_unregister(struct drm_connector *connector)
929 {
930 	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
931 	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
932 		drm_dp_aux_unregister(&nouveau_connector(connector)->aux);
933 
934 	nouveau_backlight_fini(connector);
935 }
936 
937 static int
nouveau_connector_get_modes(struct drm_connector * connector)938 nouveau_connector_get_modes(struct drm_connector *connector)
939 {
940 	struct drm_device *dev = connector->dev;
941 	struct nouveau_drm *drm = nouveau_drm(dev);
942 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
943 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
944 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
945 	int ret = 0;
946 
947 	/* destroy the native mode, the attached monitor could have changed.
948 	 */
949 	if (nv_connector->native_mode) {
950 		drm_mode_destroy(dev, nv_connector->native_mode);
951 		nv_connector->native_mode = NULL;
952 	}
953 
954 	if (nv_connector->edid)
955 		ret = drm_add_edid_modes(connector, nv_connector->edid);
956 	else
957 	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
958 	    (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
959 	     drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
960 		struct drm_display_mode mode;
961 
962 		nouveau_bios_fp_mode(dev, &mode);
963 		nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
964 	}
965 
966 	/* Determine display colour depth for everything except LVDS now,
967 	 * DP requires this before mode_valid() is called.
968 	 */
969 	if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
970 		nouveau_connector_detect_depth(connector);
971 
972 	/* Find the native mode if this is a digital panel, if we didn't
973 	 * find any modes through DDC previously add the native mode to
974 	 * the list of modes.
975 	 */
976 	if (!nv_connector->native_mode)
977 		nv_connector->native_mode = nouveau_conn_native_mode(connector);
978 	if (ret == 0 && nv_connector->native_mode) {
979 		struct drm_display_mode *mode;
980 
981 		mode = drm_mode_duplicate(dev, nv_connector->native_mode);
982 		drm_mode_probed_add(connector, mode);
983 		ret = 1;
984 	}
985 
986 	/* Determine LVDS colour depth, must happen after determining
987 	 * "native" mode as some VBIOS tables require us to use the
988 	 * pixel clock as part of the lookup...
989 	 */
990 	if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
991 		nouveau_connector_detect_depth(connector);
992 
993 	if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
994 		ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
995 
996 	if (nv_connector->type == DCB_CONNECTOR_LVDS ||
997 	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
998 	    nv_connector->type == DCB_CONNECTOR_eDP)
999 		ret += nouveau_connector_scaler_modes_add(connector);
1000 
1001 	return ret;
1002 }
1003 
1004 static unsigned
get_tmds_link_bandwidth(struct drm_connector * connector)1005 get_tmds_link_bandwidth(struct drm_connector *connector)
1006 {
1007 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1008 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1009 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1010 	struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
1011 	struct drm_display_info *info = NULL;
1012 	unsigned duallink_scale =
1013 		nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
1014 
1015 	if (drm_detect_hdmi_monitor(nv_connector->edid)) {
1016 		info = &nv_connector->base.display_info;
1017 		duallink_scale = 1;
1018 	}
1019 
1020 	if (info) {
1021 		if (nouveau_hdmimhz > 0)
1022 			return nouveau_hdmimhz * 1000;
1023 		/* Note: these limits are conservative, some Fermi's
1024 		 * can do 297 MHz. Unclear how this can be determined.
1025 		 */
1026 		if (drm->client.device.info.chipset >= 0x120) {
1027 			const int max_tmds_clock =
1028 				info->hdmi.scdc.scrambling.supported ?
1029 				594000 : 340000;
1030 			return info->max_tmds_clock ?
1031 				min(info->max_tmds_clock, max_tmds_clock) :
1032 				max_tmds_clock;
1033 		}
1034 		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1035 			return 297000;
1036 		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1037 			return 225000;
1038 	}
1039 
1040 	if (dcb->location != DCB_LOC_ON_CHIP ||
1041 	    drm->client.device.info.chipset >= 0x46)
1042 		return 165000 * duallink_scale;
1043 	else if (drm->client.device.info.chipset >= 0x40)
1044 		return 155000 * duallink_scale;
1045 	else if (drm->client.device.info.chipset >= 0x18)
1046 		return 135000 * duallink_scale;
1047 	else
1048 		return 112000 * duallink_scale;
1049 }
1050 
1051 static enum drm_mode_status
nouveau_connector_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)1052 nouveau_connector_mode_valid(struct drm_connector *connector,
1053 			     struct drm_display_mode *mode)
1054 {
1055 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1056 	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1057 	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1058 	unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1059 
1060 	switch (nv_encoder->dcb->type) {
1061 	case DCB_OUTPUT_LVDS:
1062 		if (nv_connector->native_mode &&
1063 		    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1064 		     mode->vdisplay > nv_connector->native_mode->vdisplay))
1065 			return MODE_PANEL;
1066 
1067 		min_clock = 0;
1068 		max_clock = 400000;
1069 		break;
1070 	case DCB_OUTPUT_TMDS:
1071 		max_clock = get_tmds_link_bandwidth(connector);
1072 		break;
1073 	case DCB_OUTPUT_ANALOG:
1074 		max_clock = nv_encoder->dcb->crtconf.maxfreq;
1075 		if (!max_clock)
1076 			max_clock = 350000;
1077 		break;
1078 	case DCB_OUTPUT_TV:
1079 		return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1080 	case DCB_OUTPUT_DP:
1081 		return nv50_dp_mode_valid(connector, nv_encoder, mode, NULL);
1082 	default:
1083 		BUG();
1084 		return MODE_BAD;
1085 	}
1086 
1087 	if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1088 		clock *= 2;
1089 
1090 	if (clock < min_clock)
1091 		return MODE_CLOCK_LOW;
1092 	if (clock > max_clock)
1093 		return MODE_CLOCK_HIGH;
1094 
1095 	return MODE_OK;
1096 }
1097 
1098 static struct drm_encoder *
nouveau_connector_best_encoder(struct drm_connector * connector)1099 nouveau_connector_best_encoder(struct drm_connector *connector)
1100 {
1101 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1102 
1103 	if (nv_connector->detected_encoder)
1104 		return to_drm_encoder(nv_connector->detected_encoder);
1105 
1106 	return NULL;
1107 }
1108 
1109 static int
nouveau_connector_atomic_check(struct drm_connector * connector,struct drm_atomic_state * state)1110 nouveau_connector_atomic_check(struct drm_connector *connector, struct drm_atomic_state *state)
1111 {
1112 	struct nouveau_connector *nv_conn = nouveau_connector(connector);
1113 	struct drm_connector_state *conn_state =
1114 		drm_atomic_get_new_connector_state(state, connector);
1115 
1116 	if (!nv_conn->dp_encoder || !nv50_has_mst(nouveau_drm(connector->dev)))
1117 		return 0;
1118 
1119 	return drm_dp_mst_root_conn_atomic_check(conn_state, &nv_conn->dp_encoder->dp.mstm->mgr);
1120 }
1121 
1122 static const struct drm_connector_helper_funcs
1123 nouveau_connector_helper_funcs = {
1124 	.get_modes = nouveau_connector_get_modes,
1125 	.mode_valid = nouveau_connector_mode_valid,
1126 	.best_encoder = nouveau_connector_best_encoder,
1127 	.atomic_check = nouveau_connector_atomic_check,
1128 };
1129 
1130 static const struct drm_connector_funcs
1131 nouveau_connector_funcs = {
1132 	.dpms = drm_helper_connector_dpms,
1133 	.reset = nouveau_conn_reset,
1134 	.detect = nouveau_connector_detect,
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 static const struct drm_connector_funcs
1148 nouveau_connector_funcs_lvds = {
1149 	.dpms = drm_helper_connector_dpms,
1150 	.reset = nouveau_conn_reset,
1151 	.detect = nouveau_connector_detect_lvds,
1152 	.force = nouveau_connector_force,
1153 	.fill_modes = drm_helper_probe_single_connector_modes,
1154 	.set_property = nouveau_connector_set_property,
1155 	.destroy = nouveau_connector_destroy,
1156 	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1157 	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1158 	.atomic_set_property = nouveau_conn_atomic_set_property,
1159 	.atomic_get_property = nouveau_conn_atomic_get_property,
1160 	.late_register = nouveau_connector_late_register,
1161 	.early_unregister = nouveau_connector_early_unregister,
1162 };
1163 
1164 void
nouveau_connector_hpd(struct drm_connector * connector)1165 nouveau_connector_hpd(struct drm_connector *connector)
1166 {
1167 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1168 	u32 mask = drm_connector_mask(connector);
1169 
1170 	mutex_lock(&drm->hpd_lock);
1171 	if (!(drm->hpd_pending & mask)) {
1172 		drm->hpd_pending |= mask;
1173 		schedule_work(&drm->hpd_work);
1174 	}
1175 	mutex_unlock(&drm->hpd_lock);
1176 }
1177 
1178 static int
nouveau_connector_hotplug(struct nvif_notify * notify)1179 nouveau_connector_hotplug(struct nvif_notify *notify)
1180 {
1181 	struct nouveau_connector *nv_connector =
1182 		container_of(notify, typeof(*nv_connector), hpd);
1183 	struct drm_connector *connector = &nv_connector->base;
1184 	struct drm_device *dev = connector->dev;
1185 	struct nouveau_drm *drm = nouveau_drm(dev);
1186 	const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1187 	bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1188 
1189 	if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1190 		nouveau_dp_irq(drm, nv_connector);
1191 		return NVIF_NOTIFY_KEEP;
1192 	}
1193 
1194 	NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", connector->name);
1195 	nouveau_connector_hpd(connector);
1196 
1197 	return NVIF_NOTIFY_KEEP;
1198 }
1199 
1200 static ssize_t
nouveau_connector_aux_xfer(struct drm_dp_aux * obj,struct drm_dp_aux_msg * msg)1201 nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1202 {
1203 	struct nouveau_connector *nv_connector =
1204 		container_of(obj, typeof(*nv_connector), aux);
1205 	struct nouveau_encoder *nv_encoder;
1206 	struct nvkm_i2c_aux *aux;
1207 	u8 size = msg->size;
1208 	int ret;
1209 
1210 	nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1211 	if (!nv_encoder || !(aux = nv_encoder->aux))
1212 		return -ENODEV;
1213 	if (WARN_ON(msg->size > 16))
1214 		return -E2BIG;
1215 
1216 	ret = nvkm_i2c_aux_acquire(aux);
1217 	if (ret)
1218 		return ret;
1219 
1220 	ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
1221 				msg->buffer, &size);
1222 	nvkm_i2c_aux_release(aux);
1223 	if (ret >= 0) {
1224 		msg->reply = ret;
1225 		return size;
1226 	}
1227 
1228 	return ret;
1229 }
1230 
1231 static int
drm_conntype_from_dcb(enum dcb_connector_type dcb)1232 drm_conntype_from_dcb(enum dcb_connector_type dcb)
1233 {
1234 	switch (dcb) {
1235 	case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1236 	case DCB_CONNECTOR_TV_0     :
1237 	case DCB_CONNECTOR_TV_1     :
1238 	case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1239 	case DCB_CONNECTOR_DMS59_0  :
1240 	case DCB_CONNECTOR_DMS59_1  :
1241 	case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1242 	case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1243 	case DCB_CONNECTOR_LVDS     :
1244 	case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1245 	case DCB_CONNECTOR_DMS59_DP0:
1246 	case DCB_CONNECTOR_DMS59_DP1:
1247 	case DCB_CONNECTOR_DP       :
1248 	case DCB_CONNECTOR_mDP      :
1249 	case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1250 	case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1251 	case DCB_CONNECTOR_HDMI_0   :
1252 	case DCB_CONNECTOR_HDMI_1   :
1253 	case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1254 	case DCB_CONNECTOR_WFD	    : return DRM_MODE_CONNECTOR_VIRTUAL;
1255 	default:
1256 		break;
1257 	}
1258 
1259 	return DRM_MODE_CONNECTOR_Unknown;
1260 }
1261 
1262 struct drm_connector *
nouveau_connector_create(struct drm_device * dev,const struct dcb_output * dcbe)1263 nouveau_connector_create(struct drm_device *dev,
1264 			 const struct dcb_output *dcbe)
1265 {
1266 	const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1267 	struct nouveau_drm *drm = nouveau_drm(dev);
1268 	struct nouveau_display *disp = nouveau_display(dev);
1269 	struct nouveau_connector *nv_connector = NULL;
1270 	struct drm_connector *connector;
1271 	struct drm_connector_list_iter conn_iter;
1272 	char aux_name[48] = {0};
1273 	int index = dcbe->connector;
1274 	int type, ret = 0;
1275 	bool dummy;
1276 
1277 	drm_connector_list_iter_begin(dev, &conn_iter);
1278 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1279 		nv_connector = nouveau_connector(connector);
1280 		if (nv_connector->index == index) {
1281 			drm_connector_list_iter_end(&conn_iter);
1282 			return connector;
1283 		}
1284 	}
1285 	drm_connector_list_iter_end(&conn_iter);
1286 
1287 	nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1288 	if (!nv_connector)
1289 		return ERR_PTR(-ENOMEM);
1290 
1291 	connector = &nv_connector->base;
1292 	nv_connector->index = index;
1293 
1294 	/* attempt to parse vbios connector type and hotplug gpio */
1295 	nv_connector->dcb = olddcb_conn(dev, index);
1296 	if (nv_connector->dcb) {
1297 		u32 entry = ROM16(nv_connector->dcb[0]);
1298 		if (olddcb_conntab(dev)[3] >= 4)
1299 			entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;
1300 
1301 		nv_connector->type = nv_connector->dcb[0];
1302 		if (drm_conntype_from_dcb(nv_connector->type) ==
1303 					  DRM_MODE_CONNECTOR_Unknown) {
1304 			NV_WARN(drm, "unknown connector type %02x\n",
1305 				nv_connector->type);
1306 			nv_connector->type = DCB_CONNECTOR_NONE;
1307 		}
1308 
1309 		/* Gigabyte NX85T */
1310 		if (nv_match_device(dev, 0x0421, 0x1458, 0x344c)) {
1311 			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1312 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1313 		}
1314 
1315 		/* Gigabyte GV-NX86T512H */
1316 		if (nv_match_device(dev, 0x0402, 0x1458, 0x3455)) {
1317 			if (nv_connector->type == DCB_CONNECTOR_HDMI_1)
1318 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1319 		}
1320 	} else {
1321 		nv_connector->type = DCB_CONNECTOR_NONE;
1322 	}
1323 
1324 	/* no vbios data, or an unknown dcb connector type - attempt to
1325 	 * figure out something suitable ourselves
1326 	 */
1327 	if (nv_connector->type == DCB_CONNECTOR_NONE) {
1328 		struct nouveau_drm *drm = nouveau_drm(dev);
1329 		struct dcb_table *dcbt = &drm->vbios.dcb;
1330 		u32 encoders = 0;
1331 		int i;
1332 
1333 		for (i = 0; i < dcbt->entries; i++) {
1334 			if (dcbt->entry[i].connector == nv_connector->index)
1335 				encoders |= (1 << dcbt->entry[i].type);
1336 		}
1337 
1338 		if (encoders & (1 << DCB_OUTPUT_DP)) {
1339 			if (encoders & (1 << DCB_OUTPUT_TMDS))
1340 				nv_connector->type = DCB_CONNECTOR_DP;
1341 			else
1342 				nv_connector->type = DCB_CONNECTOR_eDP;
1343 		} else
1344 		if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1345 			if (encoders & (1 << DCB_OUTPUT_ANALOG))
1346 				nv_connector->type = DCB_CONNECTOR_DVI_I;
1347 			else
1348 				nv_connector->type = DCB_CONNECTOR_DVI_D;
1349 		} else
1350 		if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1351 			nv_connector->type = DCB_CONNECTOR_VGA;
1352 		} else
1353 		if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1354 			nv_connector->type = DCB_CONNECTOR_LVDS;
1355 		} else
1356 		if (encoders & (1 << DCB_OUTPUT_TV)) {
1357 			nv_connector->type = DCB_CONNECTOR_TV_0;
1358 		}
1359 	}
1360 
1361 	switch ((type = drm_conntype_from_dcb(nv_connector->type))) {
1362 	case DRM_MODE_CONNECTOR_LVDS:
1363 		ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1364 		if (ret) {
1365 			NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1366 			kfree(nv_connector);
1367 			return ERR_PTR(ret);
1368 		}
1369 
1370 		funcs = &nouveau_connector_funcs_lvds;
1371 		break;
1372 	case DRM_MODE_CONNECTOR_DisplayPort:
1373 	case DRM_MODE_CONNECTOR_eDP:
1374 		nv_connector->aux.dev = connector->kdev;
1375 		nv_connector->aux.drm_dev = dev;
1376 		nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1377 		snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
1378 			 dcbe->hasht, dcbe->hashm);
1379 		nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
1380 		if (!nv_connector->aux.name) {
1381 			kfree(nv_connector);
1382 			return ERR_PTR(-ENOMEM);
1383 		}
1384 		drm_dp_aux_init(&nv_connector->aux);
1385 		break;
1386 	default:
1387 		funcs = &nouveau_connector_funcs;
1388 		break;
1389 	}
1390 
1391 	/* HDMI 3D support */
1392 	if ((disp->disp.object.oclass >= G82_DISP)
1393 	    && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1394 		|| (type == DRM_MODE_CONNECTOR_eDP)
1395 		|| (type == DRM_MODE_CONNECTOR_HDMIA)))
1396 		connector->stereo_allowed = true;
1397 
1398 	/* defaults, will get overridden in detect() */
1399 	connector->interlace_allowed = false;
1400 	connector->doublescan_allowed = false;
1401 
1402 	drm_connector_init(dev, connector, funcs, type);
1403 	drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1404 
1405 	if (nv_connector->dcb && (disp->disp.conn_mask & BIT(nv_connector->index))) {
1406 		ret = nvif_conn_ctor(&disp->disp, nv_connector->base.name, nv_connector->index,
1407 				     &nv_connector->conn);
1408 		if (ret) {
1409 			kfree(nv_connector);
1410 			return ERR_PTR(ret);
1411 		}
1412 	}
1413 
1414 	connector->funcs->reset(connector);
1415 	nouveau_conn_attach_properties(connector);
1416 
1417 	/* Default scaling mode */
1418 	switch (nv_connector->type) {
1419 	case DCB_CONNECTOR_LVDS:
1420 	case DCB_CONNECTOR_LVDS_SPWG:
1421 	case DCB_CONNECTOR_eDP:
1422 		/* see note in nouveau_connector_set_property() */
1423 		if (disp->disp.object.oclass < NV50_DISP) {
1424 			nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1425 			break;
1426 		}
1427 		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1428 		break;
1429 	default:
1430 		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1431 		break;
1432 	}
1433 
1434 	/* dithering properties */
1435 	switch (nv_connector->type) {
1436 	case DCB_CONNECTOR_TV_0:
1437 	case DCB_CONNECTOR_TV_1:
1438 	case DCB_CONNECTOR_TV_3:
1439 	case DCB_CONNECTOR_VGA:
1440 		break;
1441 	default:
1442 		nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1443 		break;
1444 	}
1445 
1446 	switch (type) {
1447 	case DRM_MODE_CONNECTOR_DisplayPort:
1448 		nv_connector->dp_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1449 		fallthrough;
1450 	case DRM_MODE_CONNECTOR_eDP:
1451 		drm_dp_cec_register_connector(&nv_connector->aux, connector);
1452 		break;
1453 	}
1454 
1455 	ret = nvif_notify_ctor(&disp->disp.object, "kmsHotplug",
1456 			       nouveau_connector_hotplug,
1457 			       true, NV04_DISP_NTFY_CONN,
1458 			       &(struct nvif_notify_conn_req_v0) {
1459 				.mask = NVIF_NOTIFY_CONN_V0_ANY,
1460 				.conn = index,
1461 			       },
1462 			       sizeof(struct nvif_notify_conn_req_v0),
1463 			       sizeof(struct nvif_notify_conn_rep_v0),
1464 			       &nv_connector->hpd);
1465 	if (ret)
1466 		connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1467 	else
1468 		connector->polled = DRM_CONNECTOR_POLL_HPD;
1469 
1470 	drm_connector_register(connector);
1471 	return connector;
1472 }
1473