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nouveau_connector.c

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linux-6.19.14/drivers/gpu/drm/nouveau/nouveau_connector.c 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/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/if0011.h>
  51
  52struct drm_display_mode *
  53nouveau_conn_native_mode(struct drm_connector *connector)
  54{
  55	const struct drm_connector_helper_funcs *helper = connector->helper_private;
  56	struct nouveau_drm *drm = nouveau_drm(connector->dev);
  57	struct drm_device *dev = connector->dev;
  58	struct drm_display_mode *mode, *largest = NULL;
  59	int high_w = 0, high_h = 0, high_v = 0;
  60
  61	list_for_each_entry(mode, &connector->probed_modes, head) {
  62		if (helper->mode_valid(connector, mode) != MODE_OK ||
  63		    (mode->flags & DRM_MODE_FLAG_INTERLACE))
  64			continue;
  65
  66		/* Use preferred mode if there is one.. */
  67		if (mode->type & DRM_MODE_TYPE_PREFERRED) {
  68			NV_DEBUG(drm, "native mode from preferred\n");
  69			return drm_mode_duplicate(dev, mode);
  70		}
  71
  72		/* Otherwise, take the resolution with the largest width, then
  73		 * height, then vertical refresh
  74		 */
  75		if (mode->hdisplay < high_w)
  76			continue;
  77
  78		if (mode->hdisplay == high_w && mode->vdisplay < high_h)
  79			continue;
  80
  81		if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
  82		    drm_mode_vrefresh(mode) < high_v)
  83			continue;
  84
  85		high_w = mode->hdisplay;
  86		high_h = mode->vdisplay;
  87		high_v = drm_mode_vrefresh(mode);
  88		largest = mode;
  89	}
  90
  91	NV_DEBUG(drm, "native mode from largest: %dx%d@%d\n",
  92		      high_w, high_h, high_v);
  93	return largest ? drm_mode_duplicate(dev, largest) : NULL;
  94}
  95
  96int
  97nouveau_conn_atomic_get_property(struct drm_connector *connector,
  98				 const struct drm_connector_state *state,
  99				 struct drm_property *property, u64 *val)
 100{
 101	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 102	struct nouveau_display *disp = nouveau_display(connector->dev);
 103	struct drm_device *dev = connector->dev;
 104
 105	if (property == dev->mode_config.scaling_mode_property)
 106		*val = asyc->scaler.mode;
 107	else if (property == disp->underscan_property)
 108		*val = asyc->scaler.underscan.mode;
 109	else if (property == disp->underscan_hborder_property)
 110		*val = asyc->scaler.underscan.hborder;
 111	else if (property == disp->underscan_vborder_property)
 112		*val = asyc->scaler.underscan.vborder;
 113	else if (property == disp->dithering_mode)
 114		*val = asyc->dither.mode;
 115	else if (property == disp->dithering_depth)
 116		*val = asyc->dither.depth;
 117	else if (property == disp->vibrant_hue_property)
 118		*val = asyc->procamp.vibrant_hue;
 119	else if (property == disp->color_vibrance_property)
 120		*val = asyc->procamp.color_vibrance;
 121	else
 122		return -EINVAL;
 123
 124	return 0;
 125}
 126
 127int
 128nouveau_conn_atomic_set_property(struct drm_connector *connector,
 129				 struct drm_connector_state *state,
 130				 struct drm_property *property, u64 val)
 131{
 132	struct drm_device *dev = connector->dev;
 133	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 134	struct nouveau_display *disp = nouveau_display(dev);
 135
 136	if (property == dev->mode_config.scaling_mode_property) {
 137		switch (val) {
 138		case DRM_MODE_SCALE_NONE:
 139			/* We allow 'None' for EDID modes, even on a fixed
 140			 * panel (some exist with support for lower refresh
 141			 * rates, which people might want to use for power-
 142			 * saving purposes).
 143			 *
 144			 * Non-EDID modes will force the use of GPU scaling
 145			 * to the native mode regardless of this setting.
 146			 */
 147			switch (connector->connector_type) {
 148			case DRM_MODE_CONNECTOR_LVDS:
 149			case DRM_MODE_CONNECTOR_eDP:
 150				/* ... except prior to G80, where the code
 151				 * doesn't support such things.
 152				 */
 153				if (disp->disp.object.oclass < NV50_DISP)
 154					return -EINVAL;
 155				break;
 156			default:
 157				break;
 158			}
 159			break;
 160		case DRM_MODE_SCALE_FULLSCREEN:
 161		case DRM_MODE_SCALE_CENTER:
 162		case DRM_MODE_SCALE_ASPECT:
 163			break;
 164		default:
 165			return -EINVAL;
 166		}
 167
 168		if (asyc->scaler.mode != val) {
 169			asyc->scaler.mode = val;
 170			asyc->set.scaler = true;
 171		}
 172	} else
 173	if (property == disp->underscan_property) {
 174		if (asyc->scaler.underscan.mode != val) {
 175			asyc->scaler.underscan.mode = val;
 176			asyc->set.scaler = true;
 177		}
 178	} else
 179	if (property == disp->underscan_hborder_property) {
 180		if (asyc->scaler.underscan.hborder != val) {
 181			asyc->scaler.underscan.hborder = val;
 182			asyc->set.scaler = true;
 183		}
 184	} else
 185	if (property == disp->underscan_vborder_property) {
 186		if (asyc->scaler.underscan.vborder != val) {
 187			asyc->scaler.underscan.vborder = val;
 188			asyc->set.scaler = true;
 189		}
 190	} else
 191	if (property == disp->dithering_mode) {
 192		if (asyc->dither.mode != val) {
 193			asyc->dither.mode = val;
 194			asyc->set.dither = true;
 195		}
 196	} else
 197	if (property == disp->dithering_depth) {
 198		if (asyc->dither.mode != val) {
 199			asyc->dither.depth = val;
 200			asyc->set.dither = true;
 201		}
 202	} else
 203	if (property == disp->vibrant_hue_property) {
 204		if (asyc->procamp.vibrant_hue != val) {
 205			asyc->procamp.vibrant_hue = val;
 206			asyc->set.procamp = true;
 207		}
 208	} else
 209	if (property == disp->color_vibrance_property) {
 210		if (asyc->procamp.color_vibrance != val) {
 211			asyc->procamp.color_vibrance = val;
 212			asyc->set.procamp = true;
 213		}
 214	} else {
 215		return -EINVAL;
 216	}
 217
 218	return 0;
 219}
 220
 221void
 222nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
 223				  struct drm_connector_state *state)
 224{
 225	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
 226	__drm_atomic_helper_connector_destroy_state(&asyc->state);
 227	kfree(asyc);
 228}
 229
 230struct drm_connector_state *
 231nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
 232{
 233	struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
 234	struct nouveau_conn_atom *asyc;
 235	if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
 236		return NULL;
 237	__drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
 238	asyc->dither = armc->dither;
 239	asyc->scaler = armc->scaler;
 240	asyc->procamp = armc->procamp;
 241	asyc->set.mask = 0;
 242	return &asyc->state;
 243}
 244
 245void
 246nouveau_conn_reset(struct drm_connector *connector)
 247{
 248	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 249	struct nouveau_conn_atom *asyc;
 250
 251	if (drm_drv_uses_atomic_modeset(connector->dev)) {
 252		if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
 253			return;
 254
 255		if (connector->state)
 256			nouveau_conn_atomic_destroy_state(connector,
 257							  connector->state);
 258
 259		__drm_atomic_helper_connector_reset(connector, &asyc->state);
 260	} else {
 261		asyc = &nv_connector->properties_state;
 262	}
 263
 264	asyc->dither.mode = DITHERING_MODE_AUTO;
 265	asyc->dither.depth = DITHERING_DEPTH_AUTO;
 266	asyc->scaler.mode = DRM_MODE_SCALE_NONE;
 267	asyc->scaler.underscan.mode = UNDERSCAN_OFF;
 268	asyc->procamp.color_vibrance = 150;
 269	asyc->procamp.vibrant_hue = 90;
 270
 271	if (nouveau_display(connector->dev)->disp.object.oclass < NV50_DISP) {
 272		switch (connector->connector_type) {
 273		case DRM_MODE_CONNECTOR_LVDS:
 274			/* See note in nouveau_conn_atomic_set_property(). */
 275			asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
 276			break;
 277		default:
 278			break;
 279		}
 280	}
 281}
 282
 283void
 284nouveau_conn_attach_properties(struct drm_connector *connector)
 285{
 286	struct drm_device *dev = connector->dev;
 287	struct nouveau_display *disp = nouveau_display(dev);
 288	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 289	struct nouveau_conn_atom *armc;
 290
 291	if (drm_drv_uses_atomic_modeset(connector->dev))
 292		armc = nouveau_conn_atom(connector->state);
 293	else
 294		armc = &nv_connector->properties_state;
 295
 296	/* Init DVI-I specific properties. */
 297	if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
 298		drm_object_attach_property(&connector->base, dev->mode_config.
 299					   dvi_i_subconnector_property, 0);
 300
 301	/* Add overscan compensation options to digital outputs. */
 302	if (disp->underscan_property &&
 303	    (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 304	     connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 305	     connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 306	     connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
 307		drm_object_attach_property(&connector->base,
 308					   disp->underscan_property,
 309					   UNDERSCAN_OFF);
 310		drm_object_attach_property(&connector->base,
 311					   disp->underscan_hborder_property, 0);
 312		drm_object_attach_property(&connector->base,
 313					   disp->underscan_vborder_property, 0);
 314	}
 315
 316	/* Add hue and saturation options. */
 317	if (disp->vibrant_hue_property)
 318		drm_object_attach_property(&connector->base,
 319					   disp->vibrant_hue_property,
 320					   armc->procamp.vibrant_hue);
 321	if (disp->color_vibrance_property)
 322		drm_object_attach_property(&connector->base,
 323					   disp->color_vibrance_property,
 324					   armc->procamp.color_vibrance);
 325
 326	/* Scaling mode property. */
 327	switch (connector->connector_type) {
 328	case DRM_MODE_CONNECTOR_TV:
 329		break;
 330	case DRM_MODE_CONNECTOR_VGA:
 331		if (disp->disp.object.oclass < NV50_DISP)
 332			break; /* Can only scale on DFPs. */
 333		fallthrough;
 334	default:
 335		drm_object_attach_property(&connector->base, dev->mode_config.
 336					   scaling_mode_property,
 337					   armc->scaler.mode);
 338		break;
 339	}
 340
 341	/* Dithering properties. */
 342	switch (connector->connector_type) {
 343	case DRM_MODE_CONNECTOR_TV:
 344	case DRM_MODE_CONNECTOR_VGA:
 345		break;
 346	default:
 347		if (disp->dithering_mode) {
 348			drm_object_attach_property(&connector->base,
 349						   disp->dithering_mode,
 350						   armc->dither.mode);
 351		}
 352		if (disp->dithering_depth) {
 353			drm_object_attach_property(&connector->base,
 354						   disp->dithering_depth,
 355						   armc->dither.depth);
 356		}
 357		break;
 358	}
 359}
 360
 361MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
 362int nouveau_tv_disable = 0;
 363module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 364
 365MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
 366int nouveau_ignorelid = 0;
 367module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
 368
 369MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
 370int nouveau_duallink = 1;
 371module_param_named(duallink, nouveau_duallink, int, 0400);
 372
 373MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
 374int nouveau_hdmimhz = 0;
 375module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);
 376
 377struct nouveau_encoder *
 378find_encoder(struct drm_connector *connector, int type)
 379{
 380	struct nouveau_encoder *nv_encoder;
 381	struct drm_encoder *enc;
 382
 383	drm_connector_for_each_possible_encoder(connector, enc) {
 384		nv_encoder = nouveau_encoder(enc);
 385
 386		if (type == DCB_OUTPUT_ANY ||
 387		    (nv_encoder->dcb && nv_encoder->dcb->type == type))
 388			return nv_encoder;
 389	}
 390
 391	return NULL;
 392}
 393
 394static void
 395nouveau_connector_destroy(struct drm_connector *connector)
 396{
 397	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 398	nvif_event_dtor(&nv_connector->irq);
 399	nvif_event_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	nvif_conn_dtor(&nv_connector->conn);
 406	kfree(connector);
 407}
 408
 409static struct nouveau_encoder *
 410nouveau_connector_ddc_detect(struct drm_connector *connector)
 411{
 412	struct drm_device *dev = connector->dev;
 413	struct pci_dev *pdev = to_pci_dev(dev->dev);
 414	struct nouveau_connector *conn = nouveau_connector(connector);
 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		if (nvif_object_constructed(&nv_encoder->outp.object)) {
 424			enum nvif_outp_detect_status status;
 425
 426			if (nv_encoder->dcb->type == DCB_OUTPUT_DP) {
 427				ret = nouveau_dp_detect(conn, nv_encoder);
 428				if (ret == NOUVEAU_DP_MST)
 429					return NULL;
 430				if (ret != NOUVEAU_DP_SST)
 431					continue;
 432
 433				return nv_encoder;
 434			} else {
 435				status = nvif_outp_detect(&nv_encoder->outp);
 436				switch (status) {
 437				case PRESENT:
 438					return nv_encoder;
 439				case NOT_PRESENT:
 440					continue;
 441				case UNKNOWN:
 442					break;
 443				default:
 444					WARN_ON(1);
 445					break;
 446				}
 447			}
 448		}
 449
 450		if (!nv_encoder->i2c)
 451			continue;
 452
 453		if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS) {
 454			switcheroo_ddc = !!(vga_switcheroo_handler_flags() &
 455					    VGA_SWITCHEROO_CAN_SWITCH_DDC);
 456		}
 457
 458		if (switcheroo_ddc)
 459			vga_switcheroo_lock_ddc(pdev);
 460		if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
 461			found = nv_encoder;
 462		if (switcheroo_ddc)
 463			vga_switcheroo_unlock_ddc(pdev);
 464
 465		if (found)
 466			break;
 467	}
 468
 469	return found;
 470}
 471
 472static struct nouveau_encoder *
 473nouveau_connector_of_detect(struct drm_connector *connector)
 474{
 475#ifdef __powerpc__
 476	struct drm_device *dev = connector->dev;
 477	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 478	struct nouveau_encoder *nv_encoder;
 479	struct pci_dev *pdev = to_pci_dev(dev->dev);
 480	struct device_node *dn = pci_device_to_OF_node(pdev);
 481
 482	if (!dn ||
 483	    !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 484	      (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 485		return NULL;
 486
 487	for_each_child_of_node_scoped(dn, cn) {
 488		const char *name = of_get_property(cn, "name", NULL);
 489		const void *edid = of_get_property(cn, "EDID", NULL);
 490		int idx = name ? name[strlen(name) - 1] - 'A' : 0;
 491
 492		if (nv_encoder->dcb->i2c_index == idx && edid) {
 493			nv_connector->edid =
 494				kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 495			return nv_encoder;
 496		}
 497	}
 498#endif
 499	return NULL;
 500}
 501
 502static void
 503nouveau_connector_set_encoder(struct drm_connector *connector,
 504			      struct nouveau_encoder *nv_encoder)
 505{
 506	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 507	struct nouveau_drm *drm = nouveau_drm(connector->dev);
 508	struct drm_device *dev = connector->dev;
 509	struct pci_dev *pdev = to_pci_dev(dev->dev);
 510
 511	if (nv_connector->detected_encoder == nv_encoder)
 512		return;
 513	nv_connector->detected_encoder = nv_encoder;
 514
 515	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 516		if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
 517			connector->interlace_allowed =
 518				nv_encoder->caps.dp_interlace;
 519		else
 520			connector->interlace_allowed =
 521				drm->client.device.info.family < NV_DEVICE_INFO_V0_VOLTA;
 522		connector->doublescan_allowed = true;
 523	} else
 524	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
 525	    nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
 526		connector->doublescan_allowed = false;
 527		connector->interlace_allowed = false;
 528	} else {
 529		connector->doublescan_allowed = true;
 530		if (drm->client.device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
 531		    (drm->client.device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
 532		     (pdev->device & 0x0ff0) != 0x0100 &&
 533		     (pdev->device & 0x0ff0) != 0x0150))
 534			/* HW is broken */
 535			connector->interlace_allowed = false;
 536		else
 537			connector->interlace_allowed = true;
 538	}
 539
 540	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 541		drm_object_property_set_value(&connector->base,
 542			dev->mode_config.dvi_i_subconnector_property,
 543			nv_encoder->dcb->type == DCB_OUTPUT_TMDS ?
 544			DRM_MODE_SUBCONNECTOR_DVID :
 545			DRM_MODE_SUBCONNECTOR_DVIA);
 546	}
 547}
 548
 549static void
 550nouveau_connector_set_edid(struct nouveau_connector *nv_connector,
 551			   struct edid *edid)
 552{
 553	if (nv_connector->edid != edid) {
 554		struct edid *old_edid = nv_connector->edid;
 555
 556		drm_connector_update_edid_property(&nv_connector->base, edid);
 557		kfree(old_edid);
 558		nv_connector->edid = edid;
 559	}
 560}
 561
 562static enum drm_connector_status
 563nouveau_connector_detect(struct drm_connector *connector, bool force)
 564{
 565	struct drm_device *dev = connector->dev;
 566	struct nouveau_drm *drm = nouveau_drm(dev);
 567	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 568	struct nouveau_encoder *nv_encoder = NULL;
 569	struct nouveau_encoder *nv_partner;
 570	int type;
 571	int ret;
 572	enum drm_connector_status conn_status = connector_status_disconnected;
 573
 574	/* Outputs are only polled while runtime active, so resuming the
 575	 * device here is unnecessary (and would deadlock upon runtime suspend
 576	 * because it waits for polling to finish). We do however, want to
 577	 * prevent the autosuspend timer from elapsing during this operation
 578	 * if possible.
 579	 */
 580	if (drm_kms_helper_is_poll_worker()) {
 581		pm_runtime_get_noresume(dev->dev);
 582	} else {
 583		ret = pm_runtime_get_sync(dev->dev);
 584		if (ret < 0 && ret != -EACCES) {
 585			pm_runtime_put_autosuspend(dev->dev);
 586			nouveau_connector_set_edid(nv_connector, NULL);
 587			return conn_status;
 588		}
 589	}
 590
 591	nv_encoder = nouveau_connector_ddc_detect(connector);
 592	if (nv_encoder) {
 593		struct edid *new_edid = NULL;
 594
 595		if (nv_encoder->i2c) {
 596			if ((vga_switcheroo_handler_flags() & VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
 597			    nv_connector->type == DCB_CONNECTOR_LVDS)
 598				new_edid = drm_get_edid_switcheroo(connector, nv_encoder->i2c);
 599			else
 600				new_edid = drm_get_edid(connector, nv_encoder->i2c);
 601		} else {
 602			ret = nvif_outp_edid_get(&nv_encoder->outp, (u8 **)&new_edid);
 603			if (ret < 0)
 604				return connector_status_disconnected;
 605		}
 606
 607		nouveau_connector_set_edid(nv_connector, new_edid);
 608		if (!nv_connector->edid) {
 609			NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
 610				 connector->name);
 611			goto detect_analog;
 612		}
 613
 614		/* Override encoder type for DVI-I based on whether EDID
 615		 * says the display is digital or analog, both use the
 616		 * same i2c channel so the value returned from ddc_detect
 617		 * isn't necessarily correct.
 618		 */
 619		nv_partner = NULL;
 620		if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
 621			nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
 622		if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
 623			nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);
 624
 625		if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
 626				    nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
 627				   (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
 628				    nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
 629			if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
 630				type = DCB_OUTPUT_TMDS;
 631			else
 632				type = DCB_OUTPUT_ANALOG;
 633
 634			nv_encoder = find_encoder(connector, type);
 635		}
 636
 637		nouveau_connector_set_encoder(connector, nv_encoder);
 638		conn_status = connector_status_connected;
 639
 640		if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
 641			drm_dp_cec_set_edid(&nv_connector->aux, nv_connector->edid);
 642
 643		goto out;
 644	} else {
 645		nouveau_connector_set_edid(nv_connector, NULL);
 646	}
 647
 648	nv_encoder = nouveau_connector_of_detect(connector);
 649	if (nv_encoder) {
 650		nouveau_connector_set_encoder(connector, nv_encoder);
 651		conn_status = connector_status_connected;
 652		goto out;
 653	}
 654
 655detect_analog:
 656	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
 657	if (!nv_encoder && !nouveau_tv_disable)
 658		nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
 659	if (nv_encoder && force) {
 660		struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 661		const struct drm_encoder_helper_funcs *helper =
 662						encoder->helper_private;
 663
 664		if (helper->detect(encoder, connector) ==
 665						connector_status_connected) {
 666			nouveau_connector_set_encoder(connector, nv_encoder);
 667			conn_status = connector_status_connected;
 668			goto out;
 669		}
 670	}
 671
 672 out:
 673	if (!nv_connector->edid)
 674		drm_dp_cec_unset_edid(&nv_connector->aux);
 675
 676	pm_runtime_mark_last_busy(dev->dev);
 677	pm_runtime_put_autosuspend(dev->dev);
 678
 679	return conn_status;
 680}
 681
 682static enum drm_connector_status
 683nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
 684{
 685	struct drm_device *dev = connector->dev;
 686	struct nouveau_drm *drm = nouveau_drm(dev);
 687	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 688	struct nouveau_encoder *nv_encoder = NULL;
 689	struct edid *edid = NULL;
 690	enum drm_connector_status status = connector_status_disconnected;
 691
 692	nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
 693	if (!nv_encoder)
 694		goto out;
 695
 696	/* Try retrieving EDID via DDC */
 697	if (!drm->vbios.fp_no_ddc) {
 698		status = nouveau_connector_detect(connector, force);
 699		if (status == connector_status_connected) {
 700			edid = nv_connector->edid;
 701			goto out;
 702		}
 703	}
 704
 705	/* On some laptops (Sony, i'm looking at you) there appears to
 706	 * be no direct way of accessing the panel's EDID.  The only
 707	 * option available to us appears to be to ask ACPI for help..
 708	 *
 709	 * It's important this check's before trying straps, one of the
 710	 * said manufacturer's laptops are configured in such a way
 711	 * the nouveau decides an entry in the VBIOS FP mode table is
 712	 * valid - it's not (rh#613284)
 713	 */
 714	if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
 715		edid = nouveau_acpi_edid(dev, connector);
 716		if (edid) {
 717			status = connector_status_connected;
 718			goto out;
 719		}
 720	}
 721
 722	/* If no EDID found above, and the VBIOS indicates a hardcoded
 723	 * modeline is avalilable for the panel, set it as the panel's
 724	 * native mode and exit.
 725	 */
 726	if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
 727	    nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
 728		status = connector_status_connected;
 729		goto out;
 730	}
 731
 732	/* Still nothing, some VBIOS images have a hardcoded EDID block
 733	 * stored for the panel stored in them.
 734	 */
 735	if (!drm->vbios.fp_no_ddc) {
 736		edid = (struct edid *)nouveau_bios_embedded_edid(dev);
 737		if (edid) {
 738			edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
 739			if (edid)
 740				status = connector_status_connected;
 741		}
 742	}
 743
 744out:
 745#if defined(CONFIG_ACPI_BUTTON) || \
 746	(defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 747	if (status == connector_status_connected &&
 748	    !nouveau_ignorelid && !acpi_lid_open())
 749		status = connector_status_unknown;
 750#endif
 751
 752	nouveau_connector_set_edid(nv_connector, edid);
 753	if (nv_encoder)
 754		nouveau_connector_set_encoder(connector, nv_encoder);
 755	return status;
 756}
 757
 758static void
 759nouveau_connector_force(struct drm_connector *connector)
 760{
 761	struct nouveau_drm *drm = nouveau_drm(connector->dev);
 762	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 763	struct nouveau_encoder *nv_encoder;
 764	int type;
 765
 766	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
 767		if (connector->force == DRM_FORCE_ON_DIGITAL)
 768			type = DCB_OUTPUT_TMDS;
 769		else
 770			type = DCB_OUTPUT_ANALOG;
 771	} else
 772		type = DCB_OUTPUT_ANY;
 773
 774	nv_encoder = find_encoder(connector, type);
 775	if (!nv_encoder) {
 776		NV_ERROR(drm, "can't find encoder to force %s on!\n",
 777			 connector->name);
 778		return;
 779	}
 780
 781	nouveau_connector_set_encoder(connector, nv_encoder);
 782}
 783
 784static int
 785nouveau_connector_set_property(struct drm_connector *connector,
 786			       struct drm_property *property, uint64_t value)
 787{
 788	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 789	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 790	struct nouveau_conn_atom *asyc = &nv_connector->properties_state;
 791	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 792	int ret;
 793
 794	ret = connector->funcs->atomic_set_property(&nv_connector->base,
 795						    &asyc->state,
 796						    property, value);
 797	if (ret) {
 798		if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
 799			return get_encoder_i2c_funcs(encoder)->set_property(encoder,
 800									    connector,
 801									    property,
 802									    value);
 803		return ret;
 804	}
 805
 806	nv_connector->scaling_mode = asyc->scaler.mode;
 807	nv_connector->dithering_mode = asyc->dither.mode;
 808
 809	if (connector->encoder && connector->encoder->crtc) {
 810		ret = drm_crtc_helper_set_mode(connector->encoder->crtc,
 811					      &connector->encoder->crtc->mode,
 812					       connector->encoder->crtc->x,
 813					       connector->encoder->crtc->y,
 814					       NULL);
 815		if (!ret)
 816			return -EINVAL;
 817	}
 818
 819	return 0;
 820}
 821
 822struct moderec {
 823	int hdisplay;
 824	int vdisplay;
 825};
 826
 827static struct moderec scaler_modes[] = {
 828	{ 1920, 1200 },
 829	{ 1920, 1080 },
 830	{ 1680, 1050 },
 831	{ 1600, 1200 },
 832	{ 1400, 1050 },
 833	{ 1280, 1024 },
 834	{ 1280, 960 },
 835	{ 1152, 864 },
 836	{ 1024, 768 },
 837	{ 800, 600 },
 838	{ 720, 400 },
 839	{ 640, 480 },
 840	{ 640, 400 },
 841	{ 640, 350 },
 842	{}
 843};
 844
 845static int
 846nouveau_connector_scaler_modes_add(struct drm_connector *connector)
 847{
 848	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 849	struct drm_display_mode *native = nv_connector->native_mode, *m;
 850	struct drm_device *dev = connector->dev;
 851	struct moderec *mode = &scaler_modes[0];
 852	int modes = 0;
 853
 854	if (!native)
 855		return 0;
 856
 857	while (mode->hdisplay) {
 858		if (mode->hdisplay <= native->hdisplay &&
 859		    mode->vdisplay <= native->vdisplay &&
 860		    (mode->hdisplay != native->hdisplay ||
 861		     mode->vdisplay != native->vdisplay)) {
 862			m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
 863					 drm_mode_vrefresh(native), false,
 864					 false, false);
 865			if (!m)
 866				continue;
 867
 868			drm_mode_probed_add(connector, m);
 869			modes++;
 870		}
 871
 872		mode++;
 873	}
 874
 875	return modes;
 876}
 877
 878static void
 879nouveau_connector_detect_depth(struct drm_connector *connector)
 880{
 881	struct nouveau_drm *drm = nouveau_drm(connector->dev);
 882	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 883	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 884	struct nvbios *bios = &drm->vbios;
 885	struct drm_display_mode *mode = nv_connector->native_mode;
 886	bool duallink;
 887
 888	/* if the edid is feeling nice enough to provide this info, use it */
 889	if (nv_connector->edid && connector->display_info.bpc)
 890		return;
 891
 892	/* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
 893	if (nv_connector->type == DCB_CONNECTOR_eDP) {
 894		connector->display_info.bpc = 6;
 895		return;
 896	}
 897
 898	/* we're out of options unless we're LVDS, default to 8bpc */
 899	if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
 900		connector->display_info.bpc = 8;
 901		return;
 902	}
 903
 904	connector->display_info.bpc = 6;
 905
 906	/* LVDS: panel straps */
 907	if (bios->fp_no_ddc) {
 908		if (bios->fp.if_is_24bit)
 909			connector->display_info.bpc = 8;
 910		return;
 911	}
 912
 913	/* LVDS: DDC panel, need to first determine the number of links to
 914	 * know which if_is_24bit flag to check...
 915	 */
 916	if (nv_connector->edid &&
 917	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
 918		duallink = ((u8 *)nv_connector->edid)[121] == 2;
 919	else
 920		duallink = mode->clock >= bios->fp.duallink_transition_clk;
 921
 922	if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
 923	    ( duallink && (bios->fp.strapless_is_24bit & 2)))
 924		connector->display_info.bpc = 8;
 925}
 926
 927static int
 928nouveau_connector_late_register(struct drm_connector *connector)
 929{
 930	int ret;
 931
 932	ret = nouveau_backlight_init(connector);
 933	if (ret)
 934		return ret;
 935
 936	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
 937	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
 938		ret = drm_dp_aux_register(&nouveau_connector(connector)->aux);
 939		if (ret)
 940			goto backlight_fini;
 941	}
 942
 943	return 0;
 944backlight_fini:
 945	nouveau_backlight_fini(connector);
 946	return ret;
 947}
 948
 949static void
 950nouveau_connector_early_unregister(struct drm_connector *connector)
 951{
 952	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
 953	    connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
 954		drm_dp_aux_unregister(&nouveau_connector(connector)->aux);
 955
 956	nouveau_backlight_fini(connector);
 957}
 958
 959static int
 960nouveau_connector_get_modes(struct drm_connector *connector)
 961{
 962	struct drm_device *dev = connector->dev;
 963	struct nouveau_drm *drm = nouveau_drm(dev);
 964	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 965	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
 966	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
 967	int ret = 0;
 968
 969	/* destroy the native mode, the attached monitor could have changed.
 970	 */
 971	if (nv_connector->native_mode) {
 972		drm_mode_destroy(dev, nv_connector->native_mode);
 973		nv_connector->native_mode = NULL;
 974	}
 975
 976	if (nv_connector->edid)
 977		ret = drm_add_edid_modes(connector, nv_connector->edid);
 978	else
 979	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
 980	    (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
 981	     drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
 982		struct drm_display_mode mode;
 983
 984		nouveau_bios_fp_mode(dev, &mode);
 985		nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
 986	}
 987
 988	/* Determine display colour depth for everything except LVDS now,
 989	 * DP requires this before mode_valid() is called.
 990	 */
 991	if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
 992		nouveau_connector_detect_depth(connector);
 993
 994	/* Find the native mode if this is a digital panel, if we didn't
 995	 * find any modes through DDC previously add the native mode to
 996	 * the list of modes.
 997	 */
 998	if (!nv_connector->native_mode)
 999		nv_connector->native_mode = nouveau_conn_native_mode(connector);
1000	if (ret == 0 && nv_connector->native_mode) {
1001		struct drm_display_mode *mode;
1002
1003		mode = drm_mode_duplicate(dev, nv_connector->native_mode);
1004		if (!mode)
1005			return 0;
1006
1007		drm_mode_probed_add(connector, mode);
1008		ret = 1;
1009	}
1010
1011	/* Determine LVDS colour depth, must happen after determining
1012	 * "native" mode as some VBIOS tables require us to use the
1013	 * pixel clock as part of the lookup...
1014	 */
1015	if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS && nv_connector->native_mode)
1016		nouveau_connector_detect_depth(connector);
1017
1018	if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
1019		ret = get_encoder_i2c_funcs(encoder)->get_modes(encoder, connector);
1020
1021	if (nv_connector->type == DCB_CONNECTOR_LVDS ||
1022	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
1023	    nv_connector->type == DCB_CONNECTOR_eDP)
1024		ret += nouveau_connector_scaler_modes_add(connector);
1025
1026	return ret;
1027}
1028
1029static unsigned
1030get_tmds_link_bandwidth(struct drm_connector *connector)
1031{
1032	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1033	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1034	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1035	struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
1036	struct drm_display_info *info = NULL;
1037	unsigned duallink_scale =
1038		nouveau_duallink && nv_encoder->dcb->duallink_possible ? 2 : 1;
1039
1040	if (nv_connector->base.display_info.is_hdmi) {
1041		info = &nv_connector->base.display_info;
1042		duallink_scale = 1;
1043	}
1044
1045	if (info) {
1046		if (nouveau_hdmimhz > 0)
1047			return nouveau_hdmimhz * 1000;
1048		/* Note: these limits are conservative, some Fermi's
1049		 * can do 297 MHz. Unclear how this can be determined.
1050		 */
1051		if (drm->client.device.info.chipset >= 0x120) {
1052			const int max_tmds_clock =
1053				info->hdmi.scdc.scrambling.supported ?
1054				594000 : 340000;
1055			return info->max_tmds_clock ?
1056				min(info->max_tmds_clock, max_tmds_clock) :
1057				max_tmds_clock;
1058		}
1059		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
1060			return 297000;
1061		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
1062			return 225000;
1063	}
1064
1065	if (dcb->location != DCB_LOC_ON_CHIP ||
1066	    drm->client.device.info.chipset >= 0x46)
1067		return 165000 * duallink_scale;
1068	else if (drm->client.device.info.chipset >= 0x40)
1069		return 155000 * duallink_scale;
1070	else if (drm->client.device.info.chipset >= 0x18)
1071		return 135000 * duallink_scale;
1072	else
1073		return 112000 * duallink_scale;
1074}
1075
1076static enum drm_mode_status
1077nouveau_connector_mode_valid(struct drm_connector *connector,
1078			     const struct drm_display_mode *mode)
1079{
1080	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1081	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
1082	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1083	unsigned int min_clock = 25000, max_clock = min_clock, clock = mode->clock;
1084
1085	switch (nv_encoder->dcb->type) {
1086	case DCB_OUTPUT_LVDS:
1087		if (nv_connector->native_mode &&
1088		    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
1089		     mode->vdisplay > nv_connector->native_mode->vdisplay))
1090			return MODE_PANEL;
1091
1092		min_clock = 0;
1093		max_clock = 400000;
1094		break;
1095	case DCB_OUTPUT_TMDS:
1096		max_clock = get_tmds_link_bandwidth(connector);
1097		break;
1098	case DCB_OUTPUT_ANALOG:
1099		max_clock = nv_encoder->dcb->crtconf.maxfreq;
1100		if (!max_clock)
1101			max_clock = 350000;
1102		break;
1103	case DCB_OUTPUT_TV:
1104		return get_encoder_i2c_funcs(encoder)->mode_valid(encoder, mode);
1105	case DCB_OUTPUT_DP:
1106		return nv50_dp_mode_valid(nv_encoder, mode, NULL);
1107	default:
1108		BUG();
1109		return MODE_BAD;
1110	}
1111
1112	if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
1113		clock *= 2;
1114
1115	if (clock < min_clock)
1116		return MODE_CLOCK_LOW;
1117	if (clock > max_clock)
1118		return MODE_CLOCK_HIGH;
1119
1120	return MODE_OK;
1121}
1122
1123static struct drm_encoder *
1124nouveau_connector_best_encoder(struct drm_connector *connector)
1125{
1126	struct nouveau_connector *nv_connector = nouveau_connector(connector);
1127
1128	if (nv_connector->detected_encoder)
1129		return to_drm_encoder(nv_connector->detected_encoder);
1130
1131	return NULL;
1132}
1133
1134static int
1135nouveau_connector_atomic_check(struct drm_connector *connector, struct drm_atomic_state *state)
1136{
1137	struct nouveau_connector *nv_conn = nouveau_connector(connector);
1138	struct drm_connector_state *conn_state =
1139		drm_atomic_get_new_connector_state(state, connector);
1140
1141	if (!nv_conn->dp_encoder || !nv_conn->dp_encoder->dp.mstm)
1142		return 0;
1143
1144	return drm_dp_mst_root_conn_atomic_check(conn_state, &nv_conn->dp_encoder->dp.mstm->mgr);
1145}
1146
1147static const struct drm_connector_helper_funcs
1148nouveau_connector_helper_funcs = {
1149	.get_modes = nouveau_connector_get_modes,
1150	.mode_valid = nouveau_connector_mode_valid,
1151	.best_encoder = nouveau_connector_best_encoder,
1152	.atomic_check = nouveau_connector_atomic_check,
1153};
1154
1155static const struct drm_connector_funcs
1156nouveau_connector_funcs = {
1157	.dpms = drm_helper_connector_dpms,
1158	.reset = nouveau_conn_reset,
1159	.detect = nouveau_connector_detect,
1160	.force = nouveau_connector_force,
1161	.fill_modes = drm_helper_probe_single_connector_modes,
1162	.set_property = nouveau_connector_set_property,
1163	.destroy = nouveau_connector_destroy,
1164	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1165	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1166	.atomic_set_property = nouveau_conn_atomic_set_property,
1167	.atomic_get_property = nouveau_conn_atomic_get_property,
1168	.late_register = nouveau_connector_late_register,
1169	.early_unregister = nouveau_connector_early_unregister,
1170};
1171
1172static const struct drm_connector_funcs
1173nouveau_connector_funcs_lvds = {
1174	.dpms = drm_helper_connector_dpms,
1175	.reset = nouveau_conn_reset,
1176	.detect = nouveau_connector_detect_lvds,
1177	.force = nouveau_connector_force,
1178	.fill_modes = drm_helper_probe_single_connector_modes,
1179	.set_property = nouveau_connector_set_property,
1180	.destroy = nouveau_connector_destroy,
1181	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1182	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1183	.atomic_set_property = nouveau_conn_atomic_set_property,
1184	.atomic_get_property = nouveau_conn_atomic_get_property,
1185	.late_register = nouveau_connector_late_register,
1186	.early_unregister = nouveau_connector_early_unregister,
1187};
1188
1189void
1190nouveau_connector_hpd(struct nouveau_connector *nv_connector, u64 bits)
1191{
1192	struct nouveau_drm *drm = nouveau_drm(nv_connector->base.dev);
1193	u32 mask = drm_connector_mask(&nv_connector->base);
1194	unsigned long flags;
1195
1196	spin_lock_irqsave(&drm->hpd_lock, flags);
1197	if (!(drm->hpd_pending & mask)) {
1198		nv_connector->hpd_pending |= bits;
1199		drm->hpd_pending |= mask;
1200		schedule_work(&drm->hpd_work);
1201	}
1202	spin_unlock_irqrestore(&drm->hpd_lock, flags);
1203}
1204
1205static int
1206nouveau_connector_irq(struct nvif_event *event, void *repv, u32 repc)
1207{
1208	struct nouveau_connector *nv_connector = container_of(event, typeof(*nv_connector), irq);
1209
1210	schedule_work(&nv_connector->irq_work);
1211	return NVIF_EVENT_KEEP;
1212}
1213
1214static int
1215nouveau_connector_hotplug(struct nvif_event *event, void *repv, u32 repc)
1216{
1217	struct nouveau_connector *nv_connector = container_of(event, typeof(*nv_connector), hpd);
1218	struct nvif_conn_event_v0 *rep = repv;
1219
1220	nouveau_connector_hpd(nv_connector, rep->types);
1221	return NVIF_EVENT_KEEP;
1222}
1223
1224static ssize_t
1225nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1226{
1227	struct nouveau_connector *nv_connector =
1228		container_of(obj, typeof(*nv_connector), aux);
1229	struct nouveau_encoder *nv_encoder;
1230	u8 size = msg->size;
1231	int ret;
1232
1233	if (pm_runtime_suspended(nv_connector->base.dev->dev))
1234		return -EBUSY;
1235
1236	nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1237	if (!nv_encoder)
1238		return -ENODEV;
1239	if (WARN_ON(msg->size > 16))
1240		return -E2BIG;
1241
1242	ret = nvif_outp_dp_aux_xfer(&nv_encoder->outp,
1243				    msg->request, &size, msg->address, msg->buffer);
1244	if (ret >= 0) {
1245		msg->reply = ret;
1246		return size;
1247	}
1248
1249	return ret;
1250}
1251
1252static int
1253drm_conntype_from_dcb(enum dcb_connector_type dcb)
1254{
1255	switch (dcb) {
1256	case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
1257	case DCB_CONNECTOR_TV_0     :
1258	case DCB_CONNECTOR_TV_1     :
1259	case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1260	case DCB_CONNECTOR_DMS59_0  :
1261	case DCB_CONNECTOR_DMS59_1  :
1262	case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
1263	case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
1264	case DCB_CONNECTOR_LVDS     :
1265	case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1266	case DCB_CONNECTOR_DMS59_DP0:
1267	case DCB_CONNECTOR_DMS59_DP1:
1268	case DCB_CONNECTOR_DP       :
1269	case DCB_CONNECTOR_mDP      :
1270	case DCB_CONNECTOR_USB_C    : return DRM_MODE_CONNECTOR_DisplayPort;
1271	case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
1272	case DCB_CONNECTOR_HDMI_0   :
1273	case DCB_CONNECTOR_HDMI_1   :
1274	case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1275	case DCB_CONNECTOR_WFD	    : return DRM_MODE_CONNECTOR_VIRTUAL;
1276	default:
1277		break;
1278	}
1279
1280	return DRM_MODE_CONNECTOR_Unknown;
1281}
1282
1283struct drm_connector *
1284nouveau_connector_create(struct drm_device *dev, int index)
1285{
1286	struct nouveau_drm *drm = nouveau_drm(dev);
1287	struct nouveau_display *disp = nouveau_display(dev);
1288	struct nouveau_connector *nv_connector = NULL;
1289	struct drm_connector *connector;
1290	struct drm_connector_list_iter conn_iter;
1291	int type, ret = 0;
1292	bool dummy;
1293
1294	drm_connector_list_iter_begin(dev, &conn_iter);
1295	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
1296		nv_connector = nouveau_connector(connector);
1297		if (nv_connector->index == index) {
1298			drm_connector_list_iter_end(&conn_iter);
1299			return connector;
1300		}
1301	}
1302	drm_connector_list_iter_end(&conn_iter);
1303
1304	nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
1305	if (!nv_connector)
1306		return ERR_PTR(-ENOMEM);
1307
1308	connector = &nv_connector->base;
1309	nv_connector->index = index;
1310	INIT_WORK(&nv_connector->irq_work, nouveau_dp_irq);
1311
1312	if (disp->disp.conn_mask & BIT(nv_connector->index)) {
1313		ret = nvif_conn_ctor(&disp->disp, nv_connector->base.name, nv_connector->index,
1314				     &nv_connector->conn);
1315		if (ret) {
1316			kfree(nv_connector);
1317			return ERR_PTR(ret);
1318		}
1319
1320		switch (nv_connector->conn.info.type) {
1321		case NVIF_CONN_VGA      : type = DCB_CONNECTOR_VGA; break;
1322		case NVIF_CONN_DVI_I    : type = DCB_CONNECTOR_DVI_I; break;
1323		case NVIF_CONN_DVI_D    : type = DCB_CONNECTOR_DVI_D; break;
1324		case NVIF_CONN_LVDS     : type = DCB_CONNECTOR_LVDS; break;
1325		case NVIF_CONN_LVDS_SPWG: type = DCB_CONNECTOR_LVDS_SPWG; break;
1326		case NVIF_CONN_DP       : type = DCB_CONNECTOR_DP; break;
1327		case NVIF_CONN_EDP      : type = DCB_CONNECTOR_eDP; break;
1328		case NVIF_CONN_HDMI     : type = DCB_CONNECTOR_HDMI_0; break;
1329		default:
1330			WARN_ON(1);
1331			return NULL;
1332		}
1333
1334		nv_connector->type = type;
1335	} else {
1336		u8 *dcb = olddcb_conn(dev, nv_connector->index);
1337
1338		if (dcb)
1339			nv_connector->type = dcb[0];
1340		else
1341			nv_connector->type = DCB_CONNECTOR_NONE;
1342
1343		/* attempt to parse vbios connector type and hotplug gpio */
1344		if (nv_connector->type != DCB_CONNECTOR_NONE) {
1345			if (drm_conntype_from_dcb(nv_connector->type) ==
1346						  DRM_MODE_CONNECTOR_Unknown) {
1347				NV_WARN(drm, "unknown connector type %02x\n",
1348					nv_connector->type);
1349				nv_connector->type = DCB_CONNECTOR_NONE;
1350			}
1351		}
1352
1353		/* no vbios data, or an unknown dcb connector type - attempt to
1354		 * figure out something suitable ourselves
1355		 */
1356		if (nv_connector->type == DCB_CONNECTOR_NONE &&
1357		    !WARN_ON(drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)) {
1358			struct dcb_table *dcbt = &drm->vbios.dcb;
1359			u32 encoders = 0;
1360			int i;
1361
1362			for (i = 0; i < dcbt->entries; i++) {
1363				if (dcbt->entry[i].connector == nv_connector->index)
1364					encoders |= (1 << dcbt->entry[i].type);
1365			}
1366
1367			if (encoders & (1 << DCB_OUTPUT_TMDS)) {
1368				if (encoders & (1 << DCB_OUTPUT_ANALOG))
1369					nv_connector->type = DCB_CONNECTOR_DVI_I;
1370				else
1371					nv_connector->type = DCB_CONNECTOR_DVI_D;
1372			} else
1373			if (encoders & (1 << DCB_OUTPUT_ANALOG)) {
1374				nv_connector->type = DCB_CONNECTOR_VGA;
1375			} else
1376			if (encoders & (1 << DCB_OUTPUT_LVDS)) {
1377				nv_connector->type = DCB_CONNECTOR_LVDS;
1378			} else
1379			if (encoders & (1 << DCB_OUTPUT_TV)) {
1380				nv_connector->type = DCB_CONNECTOR_TV_0;
1381			}
1382		}
1383	}
1384
1385	type = drm_conntype_from_dcb(nv_connector->type);
1386	if (type == DRM_MODE_CONNECTOR_LVDS)
1387		drm_connector_init(dev, connector, &nouveau_connector_funcs_lvds, type);
1388	else
1389		drm_connector_init(dev, connector, &nouveau_connector_funcs, type);
1390
1391	switch (type) {
1392	case DRM_MODE_CONNECTOR_LVDS:
1393		ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &dummy);
1394		if (ret) {
1395			NV_ERROR(drm, "Error parsing LVDS table, disabling\n");
1396			kfree(nv_connector);
1397			return ERR_PTR(ret);
1398		}
1399
1400		break;
1401	case DRM_MODE_CONNECTOR_DisplayPort:
1402	case DRM_MODE_CONNECTOR_eDP:
1403		nv_connector->aux.dev = connector->kdev;
1404		nv_connector->aux.drm_dev = dev;
1405		nv_connector->aux.transfer = nouveau_connector_aux_xfer;
1406		nv_connector->aux.name = connector->name;
1407		if (disp->disp.object.oclass >= GB202_DISP)
1408			nv_connector->aux.no_zero_sized = true;
1409		drm_dp_aux_init(&nv_connector->aux);
1410		break;
1411	default:
1412		break;
1413	}
1414
1415	/* HDMI 3D support */
1416	if ((disp->disp.object.oclass >= G82_DISP)
1417	    && ((type == DRM_MODE_CONNECTOR_DisplayPort)
1418		|| (type == DRM_MODE_CONNECTOR_eDP)
1419		|| (type == DRM_MODE_CONNECTOR_HDMIA)))
1420		connector->stereo_allowed = true;
1421
1422	/* defaults, will get overridden in detect() */
1423	connector->interlace_allowed = false;
1424	connector->doublescan_allowed = false;
1425
1426	drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);
1427	connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1428
1429	if (nvif_object_constructed(&nv_connector->conn.object)) {
1430		ret = nvif_conn_event_ctor(&nv_connector->conn, "kmsHotplug",
1431					   nouveau_connector_hotplug,
1432					   NVIF_CONN_EVENT_V0_PLUG | NVIF_CONN_EVENT_V0_UNPLUG,
1433					   &nv_connector->hpd);
1434		if (ret == 0)
1435			connector->polled = DRM_CONNECTOR_POLL_HPD;
1436
1437		if (nv_connector->aux.transfer) {
1438			ret = nvif_conn_event_ctor(&nv_connector->conn, "kmsDpIrq",
1439						   nouveau_connector_irq, NVIF_CONN_EVENT_V0_IRQ,
1440						   &nv_connector->irq);
1441			if (ret) {
1442				nvif_event_dtor(&nv_connector->hpd);
1443				nvif_conn_dtor(&nv_connector->conn);
1444				goto drm_conn_err;
1445			}
1446		}
1447	}
1448
1449	connector->funcs->reset(connector);
1450	nouveau_conn_attach_properties(connector);
1451
1452	/* Default scaling mode */
1453	switch (nv_connector->type) {
1454	case DCB_CONNECTOR_LVDS:
1455	case DCB_CONNECTOR_LVDS_SPWG:
1456	case DCB_CONNECTOR_eDP:
1457		/* see note in nouveau_connector_set_property() */
1458		if (disp->disp.object.oclass < NV50_DISP) {
1459			nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
1460			break;
1461		}
1462		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1463		break;
1464	default:
1465		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
1466		break;
1467	}
1468
1469	/* dithering properties */
1470	switch (nv_connector->type) {
1471	case DCB_CONNECTOR_TV_0:
1472	case DCB_CONNECTOR_TV_1:
1473	case DCB_CONNECTOR_TV_3:
1474	case DCB_CONNECTOR_VGA:
1475		break;
1476	default:
1477		nv_connector->dithering_mode = DITHERING_MODE_AUTO;
1478		break;
1479	}
1480
1481	switch (type) {
1482	case DRM_MODE_CONNECTOR_DisplayPort:
1483		nv_connector->dp_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1484		fallthrough;
1485	case DRM_MODE_CONNECTOR_eDP:
1486		drm_dp_cec_register_connector(&nv_connector->aux, connector);
1487		break;
1488	}
1489
1490	drm_connector_register(connector);
1491	return connector;
1492
1493drm_conn_err:
1494	drm_connector_cleanup(connector);
1495	kfree(nv_connector);
1496	return ERR_PTR(ret);
1497}
~/ Read-only file preview.