drivers/gpu/drm/i915/intel_dvo.c

   1 /*
   2  * Copyright 2006 Dave Airlie <airlied@linux.ie>
   3  * Copyright © 2006-2007 Intel Corporation
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *      Eric Anholt <eric@anholt.net>
  26  */
  27 #include <linux/i2c.h>
  28 #include <linux/slab.h>
  29 #include <drm/drmP.h>
  30 #include <drm/drm_crtc.h>
  31 #include "intel_drv.h"
  32 #include <drm/i915_drm.h>
  33 #include "i915_drv.h"
  34 #include "dvo.h"
  35
  36 #define SIL164_ADDR     0x38
  37 #define CH7xxx_ADDR     0x76
  38 #define TFP410_ADDR     0x38
  39 #define NS2501_ADDR     0x38
  40
  41 static const struct intel_dvo_device intel_dvo_devices[] = {
  42         {
  43                 .type = INTEL_DVO_CHIP_TMDS,
  44                 .name = "sil164",
  45                 .dvo_reg = DVOC,
  46                 .slave_addr = SIL164_ADDR,
  47                 .dev_ops = &sil164_ops,
  48         },
  49         {
  50                 .type = INTEL_DVO_CHIP_TMDS,
  51                 .name = "ch7xxx",
  52                 .dvo_reg = DVOC,
  53                 .slave_addr = CH7xxx_ADDR,
  54                 .dev_ops = &ch7xxx_ops,
  55         },
  56         {
  57                 .type = INTEL_DVO_CHIP_TMDS,
  58                 .name = "ch7xxx",
  59                 .dvo_reg = DVOC,
  60                 .slave_addr = 0x75, /* For some ch7010 */
  61                 .dev_ops = &ch7xxx_ops,
  62         },
  63         {
  64                 .type = INTEL_DVO_CHIP_LVDS,
  65                 .name = "ivch",
  66                 .dvo_reg = DVOA,
  67                 .slave_addr = 0x02, /* Might also be 0x44, 0x84, 0xc4 */
  68                 .dev_ops = &ivch_ops,
  69         },
  70         {
  71                 .type = INTEL_DVO_CHIP_TMDS,
  72                 .name = "tfp410",
  73                 .dvo_reg = DVOC,
  74                 .slave_addr = TFP410_ADDR,
  75                 .dev_ops = &tfp410_ops,
  76         },
  77         {
  78                 .type = INTEL_DVO_CHIP_LVDS,
  79                 .name = "ch7017",
  80                 .dvo_reg = DVOC,
  81                 .slave_addr = 0x75,
  82                 .gpio = GMBUS_PORT_DPB,
  83                 .dev_ops = &ch7017_ops,
  84         },
  85         {
  86                 .type = INTEL_DVO_CHIP_TMDS,
  87                 .name = "ns2501",
  88                 .dvo_reg = DVOC,
  89                 .slave_addr = NS2501_ADDR,
  90                 .dev_ops = &ns2501_ops,
  91        }
  92 };
  93
  94 struct intel_dvo {
  95         struct intel_encoder base;
  96
  97         struct intel_dvo_device dev;
  98
  99         struct drm_display_mode *panel_fixed_mode;
 100         bool panel_wants_dither;
 101 };
 102
 103 static struct intel_dvo *enc_to_dvo(struct intel_encoder *encoder)
 104 {
 105         return container_of(encoder, struct intel_dvo, base);
 106 }
 107
 108 static struct intel_dvo *intel_attached_dvo(struct drm_connector *connector)
 109 {
 110         return enc_to_dvo(intel_attached_encoder(connector));
 111 }
 112
 113 static bool intel_dvo_connector_get_hw_state(struct intel_connector *connector)
 114 {
 115         struct drm_device *dev = connector->base.dev;
 116         struct drm_i915_private *dev_priv = dev->dev_private;
 117         struct intel_dvo *intel_dvo = intel_attached_dvo(&connector->base);
 118         u32 tmp;
 119
 120         tmp = I915_READ(intel_dvo->dev.dvo_reg);
 121
 122         if (!(tmp & DVO_ENABLE))
 123                 return false;
 124
 125         return intel_dvo->dev.dev_ops->get_hw_state(&intel_dvo->dev);
 126 }
 127
 128 static bool intel_dvo_get_hw_state(struct intel_encoder *encoder,
 129                                    enum pipe *pipe)
 130 {
 131         struct drm_device *dev = encoder->base.dev;
 132         struct drm_i915_private *dev_priv = dev->dev_private;
 133         struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
 134         u32 tmp;
 135
 136         tmp = I915_READ(intel_dvo->dev.dvo_reg);
 137
 138         if (!(tmp & DVO_ENABLE))
 139                 return false;
 140
 141         *pipe = PORT_TO_PIPE(tmp);
 142
 143         return true;
 144 }
 145
 146 static void intel_dvo_get_config(struct intel_encoder *encoder,
 147                                  struct intel_crtc_config *pipe_config)
 148 {
 149         struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
 150         struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
 151         u32 tmp, flags = 0;
 152
 153         tmp = I915_READ(intel_dvo->dev.dvo_reg);
 154         if (tmp & DVO_HSYNC_ACTIVE_HIGH)
 155                 flags |= DRM_MODE_FLAG_PHSYNC;
 156         else
 157                 flags |= DRM_MODE_FLAG_NHSYNC;
 158         if (tmp & DVO_VSYNC_ACTIVE_HIGH)
 159                 flags |= DRM_MODE_FLAG_PVSYNC;
 160         else
 161                 flags |= DRM_MODE_FLAG_NVSYNC;
 162
 163         pipe_config->adjusted_mode.flags |= flags;
 164
 165         pipe_config->adjusted_mode.crtc_clock = pipe_config->port_clock;
 166 }
 167
 168 static void intel_disable_dvo(struct intel_encoder *encoder)
 169 {
 170         struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
 171         struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
 172         u32 dvo_reg = intel_dvo->dev.dvo_reg;
 173         u32 temp = I915_READ(dvo_reg);
 174
 175         intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, false);
 176         I915_WRITE(dvo_reg, temp & ~DVO_ENABLE);
 177         I915_READ(dvo_reg);
 178 }
 179
 180 static void intel_enable_dvo(struct intel_encoder *encoder)
 181 {
 182         struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
 183         struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
 184         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 185         u32 dvo_reg = intel_dvo->dev.dvo_reg;
 186         u32 temp = I915_READ(dvo_reg);
 187
 188         I915_WRITE(dvo_reg, temp | DVO_ENABLE);
 189         I915_READ(dvo_reg);
 190         intel_dvo->dev.dev_ops->mode_set(&intel_dvo->dev,
 191                                          &crtc->config.requested_mode,
 192                                          &crtc->config.adjusted_mode);
 193
 194         intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, true);
 195 }
 196
 197 /* Special dpms function to support cloning between dvo/sdvo/crt. */
 198 static void intel_dvo_dpms(struct drm_connector *connector, int mode)
 199 {
 200         struct intel_dvo *intel_dvo = intel_attached_dvo(connector);
 201         struct drm_crtc *crtc;
 202         struct intel_crtc_config *config;
 203
 204         /* dvo supports only 2 dpms states. */
 205         if (mode != DRM_MODE_DPMS_ON)
 206                 mode = DRM_MODE_DPMS_OFF;
 207
 208         if (mode == connector->dpms)
 209                 return;
 210
 211         connector->dpms = mode;
 212
 213         /* Only need to change hw state when actually enabled */
 214         crtc = intel_dvo->base.base.crtc;
 215         if (!crtc) {
 216                 intel_dvo->base.connectors_active = false;
 217                 return;
 218         }
 219
 220         /* We call connector dpms manually below in case pipe dpms doesn't
 221          * change due to cloning. */
 222         if (mode == DRM_MODE_DPMS_ON) {
 223                 config = &to_intel_crtc(crtc)->config;
 224
 225                 intel_dvo->base.connectors_active = true;
 226
 227                 intel_crtc_update_dpms(crtc);
 228
 229                 intel_dvo->dev.dev_ops->mode_set(&intel_dvo->dev,
 230                                                  &config->requested_mode,
 231                                                  &config->adjusted_mode);
 232
 233                 intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, true);
 234         } else {
 235                 intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, false);
 236
 237                 intel_dvo->base.connectors_active = false;
 238
 239                 intel_crtc_update_dpms(crtc);
 240         }
 241
 242         intel_modeset_check_state(connector->dev);
 243 }
 244
 245 static enum drm_mode_status
 246 intel_dvo_mode_valid(struct drm_connector *connector,
 247                      struct drm_display_mode *mode)
 248 {
 249         struct intel_dvo *intel_dvo = intel_attached_dvo(connector);
 250
 251         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
 252                 return MODE_NO_DBLESCAN;
 253
 254         /* XXX: Validate clock range */
 255
 256         if (intel_dvo->panel_fixed_mode) {
 257                 if (mode->hdisplay > intel_dvo->panel_fixed_mode->hdisplay)
 258                         return MODE_PANEL;
 259                 if (mode->vdisplay > intel_dvo->panel_fixed_mode->vdisplay)
 260                         return MODE_PANEL;
 261         }
 262
 263         return intel_dvo->dev.dev_ops->mode_valid(&intel_dvo->dev, mode);
 264 }
 265
 266 static bool intel_dvo_compute_config(struct intel_encoder *encoder,
 267                                      struct intel_crtc_config *pipe_config)
 268 {
 269         struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
 270         struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode;
 271
 272         /* If we have timings from the BIOS for the panel, put them in
 273          * to the adjusted mode.  The CRTC will be set up for this mode,
 274          * with the panel scaling set up to source from the H/VDisplay
 275          * of the original mode.
 276          */
 277         if (intel_dvo->panel_fixed_mode != NULL) {
 278 #define C(x) adjusted_mode->x = intel_dvo->panel_fixed_mode->x
 279                 C(hdisplay);
 280                 C(hsync_start);
 281                 C(hsync_end);
 282                 C(htotal);
 283                 C(vdisplay);
 284                 C(vsync_start);
 285                 C(vsync_end);
 286                 C(vtotal);
 287                 C(clock);
 288 #undef C
 289
 290                 drm_mode_set_crtcinfo(adjusted_mode, 0);
 291         }
 292
 293         return true;
 294 }
 295
 296 static void intel_dvo_pre_enable(struct intel_encoder *encoder)
 297 {
 298         struct drm_device *dev = encoder->base.dev;
 299         struct drm_i915_private *dev_priv = dev->dev_private;
 300         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 301         struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode;
 302         struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
 303         int pipe = crtc->pipe;
 304         u32 dvo_val;
 305         u32 dvo_reg = intel_dvo->dev.dvo_reg, dvo_srcdim_reg;
 306
 307         switch (dvo_reg) {
 308         case DVOA:
 309         default:
 310                 dvo_srcdim_reg = DVOA_SRCDIM;
 311                 break;
 312         case DVOB:
 313                 dvo_srcdim_reg = DVOB_SRCDIM;
 314                 break;
 315         case DVOC:
 316                 dvo_srcdim_reg = DVOC_SRCDIM;
 317                 break;
 318         }
 319
 320         /* Save the data order, since I don't know what it should be set to. */
 321         dvo_val = I915_READ(dvo_reg) &
 322                   (DVO_PRESERVE_MASK | DVO_DATA_ORDER_GBRG);
 323         dvo_val |= DVO_DATA_ORDER_FP | DVO_BORDER_ENABLE |
 324                    DVO_BLANK_ACTIVE_HIGH;
 325
 326         if (pipe == 1)
 327                 dvo_val |= DVO_PIPE_B_SELECT;
 328         dvo_val |= DVO_PIPE_STALL;
 329         if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
 330                 dvo_val |= DVO_HSYNC_ACTIVE_HIGH;
 331         if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
 332                 dvo_val |= DVO_VSYNC_ACTIVE_HIGH;
 333
 334         /*I915_WRITE(DVOB_SRCDIM,
 335           (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) |
 336           (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
 337         I915_WRITE(dvo_srcdim_reg,
 338                    (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) |
 339                    (adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT));
 340         /*I915_WRITE(DVOB, dvo_val);*/
 341         I915_WRITE(dvo_reg, dvo_val);
 342 }
 343
 344 /**
 345  * Detect the output connection on our DVO device.
 346  *
 347  * Unimplemented.
 348  */
 349 static enum drm_connector_status
 350 intel_dvo_detect(struct drm_connector *connector, bool force)
 351 {
 352         struct intel_dvo *intel_dvo = intel_attached_dvo(connector);
 353         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
 354                       connector->base.id, connector->name);
 355         return intel_dvo->dev.dev_ops->detect(&intel_dvo->dev);
 356 }
 357
 358 static int intel_dvo_get_modes(struct drm_connector *connector)
 359 {
 360         struct intel_dvo *intel_dvo = intel_attached_dvo(connector);
 361         struct drm_i915_private *dev_priv = connector->dev->dev_private;
 362
 363         /* We should probably have an i2c driver get_modes function for those
 364          * devices which will have a fixed set of modes determined by the chip
 365          * (TV-out, for example), but for now with just TMDS and LVDS,
 366          * that's not the case.
 367          */
 368         intel_ddc_get_modes(connector,
 369                             intel_gmbus_get_adapter(dev_priv, GMBUS_PORT_DPC));
 370         if (!list_empty(&connector->probed_modes))
 371                 return 1;
 372
 373         if (intel_dvo->panel_fixed_mode != NULL) {
 374                 struct drm_display_mode *mode;
 375                 mode = drm_mode_duplicate(connector->dev, intel_dvo->panel_fixed_mode);
 376                 if (mode) {
 377                         drm_mode_probed_add(connector, mode);
 378                         return 1;
 379                 }
 380         }
 381
 382         return 0;
 383 }
 384
 385 static void intel_dvo_destroy(struct drm_connector *connector)
 386 {
 387         drm_connector_cleanup(connector);
 388         kfree(connector);
 389 }
 390
 391 static const struct drm_connector_funcs intel_dvo_connector_funcs = {
 392         .dpms = intel_dvo_dpms,
 393         .detect = intel_dvo_detect,
 394         .destroy = intel_dvo_destroy,
 395         .fill_modes = drm_helper_probe_single_connector_modes,
 396 };
 397
 398 static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = {
 399         .mode_valid = intel_dvo_mode_valid,
 400         .get_modes = intel_dvo_get_modes,
 401         .best_encoder = intel_best_encoder,
 402 };
 403
 404 static void intel_dvo_enc_destroy(struct drm_encoder *encoder)
 405 {
 406         struct intel_dvo *intel_dvo = enc_to_dvo(to_intel_encoder(encoder));
 407
 408         if (intel_dvo->dev.dev_ops->destroy)
 409                 intel_dvo->dev.dev_ops->destroy(&intel_dvo->dev);
 410
 411         kfree(intel_dvo->panel_fixed_mode);
 412
 413         intel_encoder_destroy(encoder);
 414 }
 415
 416 static const struct drm_encoder_funcs intel_dvo_enc_funcs = {
 417         .destroy = intel_dvo_enc_destroy,
 418 };
 419
 420 /**
 421  * Attempts to get a fixed panel timing for LVDS (currently only the i830).
 422  *
 423  * Other chips with DVO LVDS will need to extend this to deal with the LVDS
 424  * chip being on DVOB/C and having multiple pipes.
 425  */
 426 static struct drm_display_mode *
 427 intel_dvo_get_current_mode(struct drm_connector *connector)
 428 {
 429         struct drm_device *dev = connector->dev;
 430         struct drm_i915_private *dev_priv = dev->dev_private;
 431         struct intel_dvo *intel_dvo = intel_attached_dvo(connector);
 432         uint32_t dvo_val = I915_READ(intel_dvo->dev.dvo_reg);
 433         struct drm_display_mode *mode = NULL;
 434
 435         /* If the DVO port is active, that'll be the LVDS, so we can pull out
 436          * its timings to get how the BIOS set up the panel.
 437          */
 438         if (dvo_val & DVO_ENABLE) {
 439                 struct drm_crtc *crtc;
 440                 int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0;
 441
 442                 crtc = intel_get_crtc_for_pipe(dev, pipe);
 443                 if (crtc) {
 444                         mode = intel_crtc_mode_get(dev, crtc);
 445                         if (mode) {
 446                                 mode->type |= DRM_MODE_TYPE_PREFERRED;
 447                                 if (dvo_val & DVO_HSYNC_ACTIVE_HIGH)
 448                                         mode->flags |= DRM_MODE_FLAG_PHSYNC;
 449                                 if (dvo_val & DVO_VSYNC_ACTIVE_HIGH)
 450                                         mode->flags |= DRM_MODE_FLAG_PVSYNC;
 451                         }
 452                 }
 453         }
 454
 455         return mode;
 456 }
 457
 458 void intel_dvo_init(struct drm_device *dev)
 459 {
 460         struct drm_i915_private *dev_priv = dev->dev_private;
 461         struct intel_encoder *intel_encoder;
 462         struct intel_dvo *intel_dvo;
 463         struct intel_connector *intel_connector;
 464         int i;
 465         int encoder_type = DRM_MODE_ENCODER_NONE;
 466
 467         intel_dvo = kzalloc(sizeof(*intel_dvo), GFP_KERNEL);
 468         if (!intel_dvo)
 469                 return;
 470
 471         intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL);
 472         if (!intel_connector) {
 473                 kfree(intel_dvo);
 474                 return;
 475         }
 476
 477         intel_encoder = &intel_dvo->base;
 478         drm_encoder_init(dev, &intel_encoder->base,
 479                          &intel_dvo_enc_funcs, encoder_type);
 480
 481         intel_encoder->disable = intel_disable_dvo;
 482         intel_encoder->enable = intel_enable_dvo;
 483         intel_encoder->get_hw_state = intel_dvo_get_hw_state;
 484         intel_encoder->get_config = intel_dvo_get_config;
 485         intel_encoder->compute_config = intel_dvo_compute_config;
 486         intel_encoder->pre_enable = intel_dvo_pre_enable;
 487         intel_connector->get_hw_state = intel_dvo_connector_get_hw_state;
 488         intel_connector->unregister = intel_connector_unregister;
 489
 490         /* Now, try to find a controller */
 491         for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) {
 492                 struct drm_connector *connector = &intel_connector->base;
 493                 const struct intel_dvo_device *dvo = &intel_dvo_devices[i];
 494                 struct i2c_adapter *i2c;
 495                 int gpio;
 496                 bool dvoinit;
 497
 498                 /* Allow the I2C driver info to specify the GPIO to be used in
 499                  * special cases, but otherwise default to what's defined
 500                  * in the spec.
 501                  */
 502                 if (intel_gmbus_is_port_valid(dvo->gpio))
 503                         gpio = dvo->gpio;
 504                 else if (dvo->type == INTEL_DVO_CHIP_LVDS)
 505                         gpio = GMBUS_PORT_SSC;
 506                 else
 507                         gpio = GMBUS_PORT_DPB;
 508
 509                 /* Set up the I2C bus necessary for the chip we're probing.
 510                  * It appears that everything is on GPIOE except for panels
 511                  * on i830 laptops, which are on GPIOB (DVOA).
 512                  */
 513                 i2c = intel_gmbus_get_adapter(dev_priv, gpio);
 514
 515                 intel_dvo->dev = *dvo;
 516
 517                 /* GMBUS NAK handling seems to be unstable, hence let the
 518                  * transmitter detection run in bit banging mode for now.
 519                  */
 520                 intel_gmbus_force_bit(i2c, true);
 521
 522                 dvoinit = dvo->dev_ops->init(&intel_dvo->dev, i2c);
 523
 524                 intel_gmbus_force_bit(i2c, false);
 525
 526                 if (!dvoinit)
 527                         continue;
 528
 529                 intel_encoder->type = INTEL_OUTPUT_DVO;
 530                 intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
 531                 switch (dvo->type) {
 532                 case INTEL_DVO_CHIP_TMDS:
 533                         intel_encoder->cloneable = (1 << INTEL_OUTPUT_ANALOG) |
 534                                 (1 << INTEL_OUTPUT_DVO);
 535                         drm_connector_init(dev, connector,
 536                                            &intel_dvo_connector_funcs,
 537                                            DRM_MODE_CONNECTOR_DVII);
 538                         encoder_type = DRM_MODE_ENCODER_TMDS;
 539                         break;
 540                 case INTEL_DVO_CHIP_LVDS:
 541                         intel_encoder->cloneable = 0;
 542                         drm_connector_init(dev, connector,
 543                                            &intel_dvo_connector_funcs,
 544                                            DRM_MODE_CONNECTOR_LVDS);
 545                         encoder_type = DRM_MODE_ENCODER_LVDS;
 546                         break;
 547                 }
 548
 549                 drm_connector_helper_add(connector,
 550                                          &intel_dvo_connector_helper_funcs);
 551                 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
 552                 connector->interlace_allowed = false;
 553                 connector->doublescan_allowed = false;
 554
 555                 intel_connector_attach_encoder(intel_connector, intel_encoder);
 556                 if (dvo->type == INTEL_DVO_CHIP_LVDS) {
 557                         /* For our LVDS chipsets, we should hopefully be able
 558                          * to dig the fixed panel mode out of the BIOS data.
 559                          * However, it's in a different format from the BIOS
 560                          * data on chipsets with integrated LVDS (stored in AIM
 561                          * headers, likely), so for now, just get the current
 562                          * mode being output through DVO.
 563                          */
 564                         intel_dvo->panel_fixed_mode =
 565                                 intel_dvo_get_current_mode(connector);
 566                         intel_dvo->panel_wants_dither = true;
 567                 }
 568
 569                 drm_connector_register(connector);
 570                 return;
 571         }
 572
 573         drm_encoder_cleanup(&intel_encoder->base);
 574         kfree(intel_dvo);
 575         kfree(intel_connector);
 576 }