drivers/gpu/drm/panel/panel-simple.c

   1 /*
   2  * Copyright (C) 2013, NVIDIA Corporation.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include <linux/backlight.h>
  25 #include <linux/gpio/consumer.h>
  26 #include <linux/module.h>
  27 #include <linux/of_platform.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/regulator/consumer.h>
  30
  31 #include <drm/drmP.h>
  32 #include <drm/drm_crtc.h>
  33 #include <drm/drm_mipi_dsi.h>
  34 #include <drm/drm_panel.h>
  35
  36 struct panel_desc {
  37         const struct drm_display_mode *modes;
  38         unsigned int num_modes;
  39
  40         struct {
  41                 unsigned int width;
  42                 unsigned int height;
  43         } size;
  44 };
  45
  46 struct panel_simple {
  47         struct drm_panel base;
  48         bool enabled;
  49
  50         const struct panel_desc *desc;
  51
  52         struct backlight_device *backlight;
  53         struct regulator *supply;
  54         struct i2c_adapter *ddc;
  55
  56         struct gpio_desc *enable_gpio;
  57 };
  58
  59 static inline struct panel_simple *to_panel_simple(struct drm_panel *panel)
  60 {
  61         return container_of(panel, struct panel_simple, base);
  62 }
  63
  64 static int panel_simple_get_fixed_modes(struct panel_simple *panel)
  65 {
  66         struct drm_connector *connector = panel->base.connector;
  67         struct drm_device *drm = panel->base.drm;
  68         struct drm_display_mode *mode;
  69         unsigned int i, num = 0;
  70
  71         if (!panel->desc)
  72                 return 0;
  73
  74         for (i = 0; i < panel->desc->num_modes; i++) {
  75                 const struct drm_display_mode *m = &panel->desc->modes[i];
  76
  77                 mode = drm_mode_duplicate(drm, m);
  78                 if (!mode) {
  79                         dev_err(drm->dev, "failed to add mode %ux%u@%u\n",
  80                                 m->hdisplay, m->vdisplay, m->vrefresh);
  81                         continue;
  82                 }
  83
  84                 drm_mode_set_name(mode);
  85
  86                 drm_mode_probed_add(connector, mode);
  87                 num++;
  88         }
  89
  90         connector->display_info.width_mm = panel->desc->size.width;
  91         connector->display_info.height_mm = panel->desc->size.height;
  92
  93         return num;
  94 }
  95
  96 static int panel_simple_disable(struct drm_panel *panel)
  97 {
  98         struct panel_simple *p = to_panel_simple(panel);
  99
 100         if (!p->enabled)
 101                 return 0;
 102
 103         if (p->backlight) {
 104                 p->backlight->props.power = FB_BLANK_POWERDOWN;
 105                 backlight_update_status(p->backlight);
 106         }
 107
 108         if (p->enable_gpio)
 109                 gpiod_set_value_cansleep(p->enable_gpio, 0);
 110
 111         regulator_disable(p->supply);
 112         p->enabled = false;
 113
 114         return 0;
 115 }
 116
 117 static int panel_simple_enable(struct drm_panel *panel)
 118 {
 119         struct panel_simple *p = to_panel_simple(panel);
 120         int err;
 121
 122         if (p->enabled)
 123                 return 0;
 124
 125         err = regulator_enable(p->supply);
 126         if (err < 0) {
 127                 dev_err(panel->dev, "failed to enable supply: %d\n", err);
 128                 return err;
 129         }
 130
 131         if (p->enable_gpio)
 132                 gpiod_set_value_cansleep(p->enable_gpio, 1);
 133
 134         if (p->backlight) {
 135                 p->backlight->props.power = FB_BLANK_UNBLANK;
 136                 backlight_update_status(p->backlight);
 137         }
 138
 139         p->enabled = true;
 140
 141         return 0;
 142 }
 143
 144 static int panel_simple_get_modes(struct drm_panel *panel)
 145 {
 146         struct panel_simple *p = to_panel_simple(panel);
 147         int num = 0;
 148
 149         /* probe EDID if a DDC bus is available */
 150         if (p->ddc) {
 151                 struct edid *edid = drm_get_edid(panel->connector, p->ddc);
 152                 drm_mode_connector_update_edid_property(panel->connector, edid);
 153                 if (edid) {
 154                         num += drm_add_edid_modes(panel->connector, edid);
 155                         kfree(edid);
 156                 }
 157         }
 158
 159         /* add hard-coded panel modes */
 160         num += panel_simple_get_fixed_modes(p);
 161
 162         return num;
 163 }
 164
 165 static const struct drm_panel_funcs panel_simple_funcs = {
 166         .disable = panel_simple_disable,
 167         .enable = panel_simple_enable,
 168         .get_modes = panel_simple_get_modes,
 169 };
 170
 171 static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
 172 {
 173         struct device_node *backlight, *ddc;
 174         struct panel_simple *panel;
 175         int err;
 176
 177         panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
 178         if (!panel)
 179                 return -ENOMEM;
 180
 181         panel->enabled = false;
 182         panel->desc = desc;
 183
 184         panel->supply = devm_regulator_get(dev, "power");
 185         if (IS_ERR(panel->supply))
 186                 return PTR_ERR(panel->supply);
 187
 188         panel->enable_gpio = devm_gpiod_get(dev, "enable");
 189         if (IS_ERR(panel->enable_gpio)) {
 190                 err = PTR_ERR(panel->enable_gpio);
 191                 if (err != -ENOENT) {
 192                         dev_err(dev, "failed to request GPIO: %d\n", err);
 193                         return err;
 194                 }
 195
 196                 panel->enable_gpio = NULL;
 197         } else {
 198                 err = gpiod_direction_output(panel->enable_gpio, 0);
 199                 if (err < 0) {
 200                         dev_err(dev, "failed to setup GPIO: %d\n", err);
 201                         return err;
 202                 }
 203         }
 204
 205         backlight = of_parse_phandle(dev->of_node, "backlight", 0);
 206         if (backlight) {
 207                 panel->backlight = of_find_backlight_by_node(backlight);
 208                 of_node_put(backlight);
 209
 210                 if (!panel->backlight)
 211                         return -EPROBE_DEFER;
 212         }
 213
 214         ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
 215         if (ddc) {
 216                 panel->ddc = of_find_i2c_adapter_by_node(ddc);
 217                 of_node_put(ddc);
 218
 219                 if (!panel->ddc) {
 220                         err = -EPROBE_DEFER;
 221                         goto free_backlight;
 222                 }
 223         }
 224
 225         drm_panel_init(&panel->base);
 226         panel->base.dev = dev;
 227         panel->base.funcs = &panel_simple_funcs;
 228
 229         err = drm_panel_add(&panel->base);
 230         if (err < 0)
 231                 goto free_ddc;
 232
 233         dev_set_drvdata(dev, panel);
 234
 235         return 0;
 236
 237 free_ddc:
 238         if (panel->ddc)
 239                 put_device(&panel->ddc->dev);
 240 free_backlight:
 241         if (panel->backlight)
 242                 put_device(&panel->backlight->dev);
 243
 244         return err;
 245 }
 246
 247 static int panel_simple_remove(struct device *dev)
 248 {
 249         struct panel_simple *panel = dev_get_drvdata(dev);
 250
 251         drm_panel_detach(&panel->base);
 252         drm_panel_remove(&panel->base);
 253
 254         panel_simple_disable(&panel->base);
 255
 256         if (panel->ddc)
 257                 put_device(&panel->ddc->dev);
 258
 259         if (panel->backlight)
 260                 put_device(&panel->backlight->dev);
 261
 262         return 0;
 263 }
 264
 265 static void panel_simple_shutdown(struct device *dev)
 266 {
 267         struct panel_simple *panel = dev_get_drvdata(dev);
 268
 269         panel_simple_disable(&panel->base);
 270 }
 271
 272 static const struct drm_display_mode auo_b101aw03_mode = {
 273         .clock = 51450,
 274         .hdisplay = 1024,
 275         .hsync_start = 1024 + 156,
 276         .hsync_end = 1024 + 156 + 8,
 277         .htotal = 1024 + 156 + 8 + 156,
 278         .vdisplay = 600,
 279         .vsync_start = 600 + 16,
 280         .vsync_end = 600 + 16 + 6,
 281         .vtotal = 600 + 16 + 6 + 16,
 282         .vrefresh = 60,
 283 };
 284
 285 static const struct panel_desc auo_b101aw03 = {
 286         .modes = &auo_b101aw03_mode,
 287         .num_modes = 1,
 288         .size = {
 289                 .width = 223,
 290                 .height = 125,
 291         },
 292 };
 293
 294 static const struct drm_display_mode auo_b133xtn01_mode = {
 295         .clock = 69500,
 296         .hdisplay = 1366,
 297         .hsync_start = 1366 + 48,
 298         .hsync_end = 1366 + 48 + 32,
 299         .htotal = 1366 + 48 + 32 + 20,
 300         .vdisplay = 768,
 301         .vsync_start = 768 + 3,
 302         .vsync_end = 768 + 3 + 6,
 303         .vtotal = 768 + 3 + 6 + 13,
 304         .vrefresh = 60,
 305 };
 306
 307 static const struct panel_desc auo_b133xtn01 = {
 308         .modes = &auo_b133xtn01_mode,
 309         .num_modes = 1,
 310         .size = {
 311                 .width = 293,
 312                 .height = 165,
 313         },
 314 };
 315
 316 static const struct drm_display_mode chunghwa_claa101wa01a_mode = {
 317         .clock = 72070,
 318         .hdisplay = 1366,
 319         .hsync_start = 1366 + 58,
 320         .hsync_end = 1366 + 58 + 58,
 321         .htotal = 1366 + 58 + 58 + 58,
 322         .vdisplay = 768,
 323         .vsync_start = 768 + 4,
 324         .vsync_end = 768 + 4 + 4,
 325         .vtotal = 768 + 4 + 4 + 4,
 326         .vrefresh = 60,
 327 };
 328
 329 static const struct panel_desc chunghwa_claa101wa01a = {
 330         .modes = &chunghwa_claa101wa01a_mode,
 331         .num_modes = 1,
 332         .size = {
 333                 .width = 220,
 334                 .height = 120,
 335         },
 336 };
 337
 338 static const struct drm_display_mode chunghwa_claa101wb01_mode = {
 339         .clock = 69300,
 340         .hdisplay = 1366,
 341         .hsync_start = 1366 + 48,
 342         .hsync_end = 1366 + 48 + 32,
 343         .htotal = 1366 + 48 + 32 + 20,
 344         .vdisplay = 768,
 345         .vsync_start = 768 + 16,
 346         .vsync_end = 768 + 16 + 8,
 347         .vtotal = 768 + 16 + 8 + 16,
 348         .vrefresh = 60,
 349 };
 350
 351 static const struct panel_desc chunghwa_claa101wb01 = {
 352         .modes = &chunghwa_claa101wb01_mode,
 353         .num_modes = 1,
 354         .size = {
 355                 .width = 223,
 356                 .height = 125,
 357         },
 358 };
 359
 360 static const struct drm_display_mode edt_et057090dhu_mode = {
 361         .clock = 25175,
 362         .hdisplay = 640,
 363         .hsync_start = 640 + 16,
 364         .hsync_end = 640 + 16 + 30,
 365         .htotal = 640 + 16 + 30 + 114,
 366         .vdisplay = 480,
 367         .vsync_start = 480 + 10,
 368         .vsync_end = 480 + 10 + 3,
 369         .vtotal = 480 + 10 + 3 + 32,
 370         .vrefresh = 60,
 371         .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
 372 };
 373
 374 static const struct panel_desc edt_et057090dhu = {
 375         .modes = &edt_et057090dhu_mode,
 376         .num_modes = 1,
 377         .size = {
 378                 .width = 115,
 379                 .height = 86,
 380         },
 381 };
 382
 383 static const struct drm_display_mode edt_etm0700g0dh6_mode = {
 384         .clock = 33260,
 385         .hdisplay = 800,
 386         .hsync_start = 800 + 40,
 387         .hsync_end = 800 + 40 + 128,
 388         .htotal = 800 + 40 + 128 + 88,
 389         .vdisplay = 480,
 390         .vsync_start = 480 + 10,
 391         .vsync_end = 480 + 10 + 2,
 392         .vtotal = 480 + 10 + 2 + 33,
 393         .vrefresh = 60,
 394         .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
 395 };
 396
 397 static const struct panel_desc edt_etm0700g0dh6 = {
 398         .modes = &edt_etm0700g0dh6_mode,
 399         .num_modes = 1,
 400         .size = {
 401                 .width = 152,
 402                 .height = 91,
 403         },
 404 };
 405
 406 static const struct drm_display_mode lg_lp129qe_mode = {
 407         .clock = 285250,
 408         .hdisplay = 2560,
 409         .hsync_start = 2560 + 48,
 410         .hsync_end = 2560 + 48 + 32,
 411         .htotal = 2560 + 48 + 32 + 80,
 412         .vdisplay = 1700,
 413         .vsync_start = 1700 + 3,
 414         .vsync_end = 1700 + 3 + 10,
 415         .vtotal = 1700 + 3 + 10 + 36,
 416         .vrefresh = 60,
 417 };
 418
 419 static const struct panel_desc lg_lp129qe = {
 420         .modes = &lg_lp129qe_mode,
 421         .num_modes = 1,
 422         .size = {
 423                 .width = 272,
 424                 .height = 181,
 425         },
 426 };
 427
 428 static const struct drm_display_mode samsung_ltn101nt05_mode = {
 429         .clock = 54030,
 430         .hdisplay = 1024,
 431         .hsync_start = 1024 + 24,
 432         .hsync_end = 1024 + 24 + 136,
 433         .htotal = 1024 + 24 + 136 + 160,
 434         .vdisplay = 600,
 435         .vsync_start = 600 + 3,
 436         .vsync_end = 600 + 3 + 6,
 437         .vtotal = 600 + 3 + 6 + 61,
 438         .vrefresh = 60,
 439 };
 440
 441 static const struct panel_desc samsung_ltn101nt05 = {
 442         .modes = &samsung_ltn101nt05_mode,
 443         .num_modes = 1,
 444         .size = {
 445                 .width = 1024,
 446                 .height = 600,
 447         },
 448 };
 449
 450 static const struct of_device_id platform_of_match[] = {
 451         {
 452                 .compatible = "auo,b101aw03",
 453                 .data = &auo_b101aw03,
 454         }, {
 455                 .compatible = "auo,b133xtn01",
 456                 .data = &auo_b133xtn01,
 457         }, {
 458                 .compatible = "chunghwa,claa101wa01a",
 459                 .data = &chunghwa_claa101wa01a
 460         }, {
 461                 .compatible = "chunghwa,claa101wb01",
 462                 .data = &chunghwa_claa101wb01
 463         }, {
 464                 .compatible = "edt,et057090dhu",
 465                 .data = &edt_et057090dhu,
 466         }, {
 467                 .compatible = "edt,et070080dh6",
 468                 .data = &edt_etm0700g0dh6,
 469         }, {
 470                 .compatible = "edt,etm0700g0dh6",
 471                 .data = &edt_etm0700g0dh6,
 472         }, {
 473                 .compatible = "lg,lp129qe",
 474                 .data = &lg_lp129qe,
 475         }, {
 476                 .compatible = "samsung,ltn101nt05",
 477                 .data = &samsung_ltn101nt05,
 478         }, {
 479                 .compatible = "simple-panel",
 480         }, {
 481                 /* sentinel */
 482         }
 483 };
 484 MODULE_DEVICE_TABLE(of, platform_of_match);
 485
 486 static int panel_simple_platform_probe(struct platform_device *pdev)
 487 {
 488         const struct of_device_id *id;
 489
 490         id = of_match_node(platform_of_match, pdev->dev.of_node);
 491         if (!id)
 492                 return -ENODEV;
 493
 494         return panel_simple_probe(&pdev->dev, id->data);
 495 }
 496
 497 static int panel_simple_platform_remove(struct platform_device *pdev)
 498 {
 499         return panel_simple_remove(&pdev->dev);
 500 }
 501
 502 static void panel_simple_platform_shutdown(struct platform_device *pdev)
 503 {
 504         panel_simple_shutdown(&pdev->dev);
 505 }
 506
 507 static struct platform_driver panel_simple_platform_driver = {
 508         .driver = {
 509                 .name = "panel-simple",
 510                 .owner = THIS_MODULE,
 511                 .of_match_table = platform_of_match,
 512         },
 513         .probe = panel_simple_platform_probe,
 514         .remove = panel_simple_platform_remove,
 515         .shutdown = panel_simple_platform_shutdown,
 516 };
 517
 518 struct panel_desc_dsi {
 519         struct panel_desc desc;
 520
 521         unsigned long flags;
 522         enum mipi_dsi_pixel_format format;
 523         unsigned int lanes;
 524 };
 525
 526 static const struct drm_display_mode lg_ld070wx3_sl01_mode = {
 527         .clock = 71000,
 528         .hdisplay = 800,
 529         .hsync_start = 800 + 32,
 530         .hsync_end = 800 + 32 + 1,
 531         .htotal = 800 + 32 + 1 + 57,
 532         .vdisplay = 1280,
 533         .vsync_start = 1280 + 28,
 534         .vsync_end = 1280 + 28 + 1,
 535         .vtotal = 1280 + 28 + 1 + 14,
 536         .vrefresh = 60,
 537 };
 538
 539 static const struct panel_desc_dsi lg_ld070wx3_sl01 = {
 540         .desc = {
 541                 .modes = &lg_ld070wx3_sl01_mode,
 542                 .num_modes = 1,
 543                 .size = {
 544                         .width = 94,
 545                         .height = 151,
 546                 },
 547         },
 548         .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_CLOCK_NON_CONTINUOUS,
 549         .format = MIPI_DSI_FMT_RGB888,
 550         .lanes = 4,
 551 };
 552
 553 static const struct drm_display_mode lg_lh500wx1_sd03_mode = {
 554         .clock = 67000,
 555         .hdisplay = 720,
 556         .hsync_start = 720 + 12,
 557         .hsync_end = 720 + 12 + 4,
 558         .htotal = 720 + 12 + 4 + 112,
 559         .vdisplay = 1280,
 560         .vsync_start = 1280 + 8,
 561         .vsync_end = 1280 + 8 + 4,
 562         .vtotal = 1280 + 8 + 4 + 12,
 563         .vrefresh = 60,
 564 };
 565
 566 static const struct panel_desc_dsi lg_lh500wx1_sd03 = {
 567         .desc = {
 568                 .modes = &lg_lh500wx1_sd03_mode,
 569                 .num_modes = 1,
 570                 .size = {
 571                         .width = 62,
 572                         .height = 110,
 573                 },
 574         },
 575         .flags = MIPI_DSI_MODE_VIDEO,
 576         .format = MIPI_DSI_FMT_RGB888,
 577         .lanes = 4,
 578 };
 579
 580 static const struct drm_display_mode panasonic_vvx10f004b00_mode = {
 581         .clock = 157200,
 582         .hdisplay = 1920,
 583         .hsync_start = 1920 + 154,
 584         .hsync_end = 1920 + 154 + 16,
 585         .htotal = 1920 + 154 + 16 + 32,
 586         .vdisplay = 1200,
 587         .vsync_start = 1200 + 17,
 588         .vsync_end = 1200 + 17 + 2,
 589         .vtotal = 1200 + 17 + 2 + 16,
 590         .vrefresh = 60,
 591 };
 592
 593 static const struct panel_desc_dsi panasonic_vvx10f004b00 = {
 594         .desc = {
 595                 .modes = &panasonic_vvx10f004b00_mode,
 596                 .num_modes = 1,
 597                 .size = {
 598                         .width = 217,
 599                         .height = 136,
 600                 },
 601         },
 602         .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 603                  MIPI_DSI_CLOCK_NON_CONTINUOUS,
 604         .format = MIPI_DSI_FMT_RGB888,
 605         .lanes = 4,
 606 };
 607
 608 static const struct of_device_id dsi_of_match[] = {
 609         {
 610                 .compatible = "lg,ld070wx3-sl01",
 611                 .data = &lg_ld070wx3_sl01
 612         }, {
 613                 .compatible = "lg,lh500wx1-sd03",
 614                 .data = &lg_lh500wx1_sd03
 615         }, {
 616                 .compatible = "panasonic,vvx10f004b00",
 617                 .data = &panasonic_vvx10f004b00
 618         }, {
 619                 /* sentinel */
 620         }
 621 };
 622 MODULE_DEVICE_TABLE(of, dsi_of_match);
 623
 624 static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi)
 625 {
 626         const struct panel_desc_dsi *desc;
 627         const struct of_device_id *id;
 628         int err;
 629
 630         id = of_match_node(dsi_of_match, dsi->dev.of_node);
 631         if (!id)
 632                 return -ENODEV;
 633
 634         desc = id->data;
 635
 636         err = panel_simple_probe(&dsi->dev, &desc->desc);
 637         if (err < 0)
 638                 return err;
 639
 640         dsi->mode_flags = desc->flags;
 641         dsi->format = desc->format;
 642         dsi->lanes = desc->lanes;
 643
 644         return mipi_dsi_attach(dsi);
 645 }
 646
 647 static int panel_simple_dsi_remove(struct mipi_dsi_device *dsi)
 648 {
 649         int err;
 650
 651         err = mipi_dsi_detach(dsi);
 652         if (err < 0)
 653                 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
 654
 655         return panel_simple_remove(&dsi->dev);
 656 }
 657
 658 static void panel_simple_dsi_shutdown(struct mipi_dsi_device *dsi)
 659 {
 660         panel_simple_shutdown(&dsi->dev);
 661 }
 662
 663 static struct mipi_dsi_driver panel_simple_dsi_driver = {
 664         .driver = {
 665                 .name = "panel-simple-dsi",
 666                 .owner = THIS_MODULE,
 667                 .of_match_table = dsi_of_match,
 668         },
 669         .probe = panel_simple_dsi_probe,
 670         .remove = panel_simple_dsi_remove,
 671         .shutdown = panel_simple_dsi_shutdown,
 672 };
 673
 674 static int __init panel_simple_init(void)
 675 {
 676         int err;
 677
 678         err = platform_driver_register(&panel_simple_platform_driver);
 679         if (err < 0)
 680                 return err;
 681
 682         if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
 683                 err = mipi_dsi_driver_register(&panel_simple_dsi_driver);
 684                 if (err < 0)
 685                         return err;
 686         }
 687
 688         return 0;
 689 }
 690 module_init(panel_simple_init);
 691
 692 static void __exit panel_simple_exit(void)
 693 {
 694         if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
 695                 mipi_dsi_driver_unregister(&panel_simple_dsi_driver);
 696
 697         platform_driver_unregister(&panel_simple_platform_driver);
 698 }
 699 module_exit(panel_simple_exit);
 700
 701 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
 702 MODULE_DESCRIPTION("DRM Driver for Simple Panels");
 703 MODULE_LICENSE("GPL and additional rights");