drivers/gpu/drm/rcar-du/rcar_du_drv.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * rcar_du_drv.c  --  R-Car Display Unit DRM driver
   4  *
   5  * Copyright (C) 2013-2015 Renesas Electronics Corporation
   6  *
   7  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/io.h>
  12 #include <linux/mm.h>
  13 #include <linux/module.h>
  14 #include <linux/of_device.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/pm.h>
  17 #include <linux/slab.h>
  18 #include <linux/wait.h>
  19
  20 #include <drm/drm_atomic_helper.h>
  21 #include <drm/drm_fb_cma_helper.h>
  22 #include <drm/drm_fb_helper.h>
  23 #include <drm/drm_drv.h>
  24 #include <drm/drm_gem_cma_helper.h>
  25 #include <drm/drm_probe_helper.h>
  26
  27 #include "rcar_du_drv.h"
  28 #include "rcar_du_kms.h"
  29 #include "rcar_du_of.h"
  30 #include "rcar_du_regs.h"
  31
  32 /* -----------------------------------------------------------------------------
  33  * Device Information
  34  */
  35
  36 static const struct rcar_du_device_info rzg1_du_r8a7743_info = {
  37         .gen = 2,
  38         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
  39                   | RCAR_DU_FEATURE_INTERLACED
  40                   | RCAR_DU_FEATURE_TVM_SYNC,
  41         .channels_mask = BIT(1) | BIT(0),
  42         .routes = {
  43                 /*
  44                  * R8A774[34] has one RGB output and one LVDS output
  45                  */
  46                 [RCAR_DU_OUTPUT_DPAD0] = {
  47                         .possible_crtcs = BIT(1) | BIT(0),
  48                         .port = 0,
  49                 },
  50                 [RCAR_DU_OUTPUT_LVDS0] = {
  51                         .possible_crtcs = BIT(0),
  52                         .port = 1,
  53                 },
  54         },
  55         .num_lvds = 1,
  56 };
  57
  58 static const struct rcar_du_device_info rzg1_du_r8a7745_info = {
  59         .gen = 2,
  60         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
  61                   | RCAR_DU_FEATURE_INTERLACED
  62                   | RCAR_DU_FEATURE_TVM_SYNC,
  63         .channels_mask = BIT(1) | BIT(0),
  64         .routes = {
  65                 /*
  66                  * R8A7745 has two RGB outputs
  67                  */
  68                 [RCAR_DU_OUTPUT_DPAD0] = {
  69                         .possible_crtcs = BIT(0),
  70                         .port = 0,
  71                 },
  72                 [RCAR_DU_OUTPUT_DPAD1] = {
  73                         .possible_crtcs = BIT(1),
  74                         .port = 1,
  75                 },
  76         },
  77 };
  78
  79 static const struct rcar_du_device_info rzg1_du_r8a77470_info = {
  80         .gen = 2,
  81         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
  82                   | RCAR_DU_FEATURE_INTERLACED
  83                   | RCAR_DU_FEATURE_TVM_SYNC,
  84         .channels_mask = BIT(1) | BIT(0),
  85         .routes = {
  86                 /*
  87                  * R8A77470 has two RGB outputs, one LVDS output, and
  88                  * one (currently unsupported) analog video output
  89                  */
  90                 [RCAR_DU_OUTPUT_DPAD0] = {
  91                         .possible_crtcs = BIT(0),
  92                         .port = 0,
  93                 },
  94                 [RCAR_DU_OUTPUT_DPAD1] = {
  95                         .possible_crtcs = BIT(1),
  96                         .port = 1,
  97                 },
  98                 [RCAR_DU_OUTPUT_LVDS0] = {
  99                         .possible_crtcs = BIT(0) | BIT(1),
 100                         .port = 2,
 101                 },
 102         },
 103 };
 104
 105 static const struct rcar_du_device_info rcar_du_r8a774a1_info = {
 106         .gen = 3,
 107         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 108                   | RCAR_DU_FEATURE_VSP1_SOURCE
 109                   | RCAR_DU_FEATURE_INTERLACED
 110                   | RCAR_DU_FEATURE_TVM_SYNC,
 111         .channels_mask = BIT(2) | BIT(1) | BIT(0),
 112         .routes = {
 113                 /*
 114                  * R8A774A1 has one RGB output, one LVDS output and one HDMI
 115                  * output.
 116                  */
 117                 [RCAR_DU_OUTPUT_DPAD0] = {
 118                         .possible_crtcs = BIT(2),
 119                         .port = 0,
 120                 },
 121                 [RCAR_DU_OUTPUT_HDMI0] = {
 122                         .possible_crtcs = BIT(1),
 123                         .port = 1,
 124                 },
 125                 [RCAR_DU_OUTPUT_LVDS0] = {
 126                         .possible_crtcs = BIT(0),
 127                         .port = 2,
 128                 },
 129         },
 130         .num_lvds = 1,
 131         .dpll_mask =  BIT(1),
 132 };
 133
 134 static const struct rcar_du_device_info rcar_du_r8a774b1_info = {
 135         .gen = 3,
 136         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 137                   | RCAR_DU_FEATURE_VSP1_SOURCE
 138                   | RCAR_DU_FEATURE_INTERLACED
 139                   | RCAR_DU_FEATURE_TVM_SYNC,
 140         .channels_mask = BIT(3) | BIT(1) | BIT(0),
 141         .routes = {
 142                 /*
 143                  * R8A774B1 has one RGB output, one LVDS output and one HDMI
 144                  * output.
 145                  */
 146                 [RCAR_DU_OUTPUT_DPAD0] = {
 147                         .possible_crtcs = BIT(2),
 148                         .port = 0,
 149                 },
 150                 [RCAR_DU_OUTPUT_HDMI0] = {
 151                         .possible_crtcs = BIT(1),
 152                         .port = 1,
 153                 },
 154                 [RCAR_DU_OUTPUT_LVDS0] = {
 155                         .possible_crtcs = BIT(0),
 156                         .port = 2,
 157                 },
 158         },
 159         .num_lvds = 1,
 160         .dpll_mask =  BIT(1),
 161 };
 162
 163 static const struct rcar_du_device_info rcar_du_r8a774c0_info = {
 164         .gen = 3,
 165         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 166                   | RCAR_DU_FEATURE_VSP1_SOURCE,
 167         .channels_mask = BIT(1) | BIT(0),
 168         .routes = {
 169                 /*
 170                  * R8A774C0 has one RGB output and two LVDS outputs
 171                  */
 172                 [RCAR_DU_OUTPUT_DPAD0] = {
 173                         .possible_crtcs = BIT(0) | BIT(1),
 174                         .port = 0,
 175                 },
 176                 [RCAR_DU_OUTPUT_LVDS0] = {
 177                         .possible_crtcs = BIT(0),
 178                         .port = 1,
 179                 },
 180                 [RCAR_DU_OUTPUT_LVDS1] = {
 181                         .possible_crtcs = BIT(1),
 182                         .port = 2,
 183                 },
 184         },
 185         .num_lvds = 2,
 186         .lvds_clk_mask =  BIT(1) | BIT(0),
 187 };
 188
 189 static const struct rcar_du_device_info rcar_du_r8a774e1_info = {
 190         .gen = 3,
 191         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 192                   | RCAR_DU_FEATURE_VSP1_SOURCE
 193                   | RCAR_DU_FEATURE_INTERLACED
 194                   | RCAR_DU_FEATURE_TVM_SYNC,
 195         .channels_mask = BIT(3) | BIT(1) | BIT(0),
 196         .routes = {
 197                 /*
 198                  * R8A774E1 has one RGB output, one LVDS output and one HDMI
 199                  * output.
 200                  */
 201                 [RCAR_DU_OUTPUT_DPAD0] = {
 202                         .possible_crtcs = BIT(2),
 203                         .port = 0,
 204                 },
 205                 [RCAR_DU_OUTPUT_HDMI0] = {
 206                         .possible_crtcs = BIT(1),
 207                         .port = 1,
 208                 },
 209                 [RCAR_DU_OUTPUT_LVDS0] = {
 210                         .possible_crtcs = BIT(0),
 211                         .port = 2,
 212                 },
 213         },
 214         .num_lvds = 1,
 215         .dpll_mask =  BIT(1),
 216 };
 217
 218 static const struct rcar_du_device_info rcar_du_r8a7779_info = {
 219         .gen = 1,
 220         .features = RCAR_DU_FEATURE_INTERLACED
 221                   | RCAR_DU_FEATURE_TVM_SYNC,
 222         .channels_mask = BIT(1) | BIT(0),
 223         .routes = {
 224                 /*
 225                  * R8A7779 has two RGB outputs and one (currently unsupported)
 226                  * TCON output.
 227                  */
 228                 [RCAR_DU_OUTPUT_DPAD0] = {
 229                         .possible_crtcs = BIT(0),
 230                         .port = 0,
 231                 },
 232                 [RCAR_DU_OUTPUT_DPAD1] = {
 233                         .possible_crtcs = BIT(1) | BIT(0),
 234                         .port = 1,
 235                 },
 236         },
 237 };
 238
 239 static const struct rcar_du_device_info rcar_du_r8a7790_info = {
 240         .gen = 2,
 241         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 242                   | RCAR_DU_FEATURE_INTERLACED
 243                   | RCAR_DU_FEATURE_TVM_SYNC,
 244         .quirks = RCAR_DU_QUIRK_ALIGN_128B,
 245         .channels_mask = BIT(2) | BIT(1) | BIT(0),
 246         .routes = {
 247                 /*
 248                  * R8A7742 and R8A7790 each have one RGB output and two LVDS
 249                  * outputs. Additionally R8A7790 supports one TCON output
 250                  * (currently unsupported by the driver).
 251                  */
 252                 [RCAR_DU_OUTPUT_DPAD0] = {
 253                         .possible_crtcs = BIT(2) | BIT(1) | BIT(0),
 254                         .port = 0,
 255                 },
 256                 [RCAR_DU_OUTPUT_LVDS0] = {
 257                         .possible_crtcs = BIT(0),
 258                         .port = 1,
 259                 },
 260                 [RCAR_DU_OUTPUT_LVDS1] = {
 261                         .possible_crtcs = BIT(2) | BIT(1),
 262                         .port = 2,
 263                 },
 264         },
 265         .num_lvds = 2,
 266 };
 267
 268 /* M2-W (r8a7791) and M2-N (r8a7793) are identical */
 269 static const struct rcar_du_device_info rcar_du_r8a7791_info = {
 270         .gen = 2,
 271         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 272                   | RCAR_DU_FEATURE_INTERLACED
 273                   | RCAR_DU_FEATURE_TVM_SYNC,
 274         .channels_mask = BIT(1) | BIT(0),
 275         .routes = {
 276                 /*
 277                  * R8A779[13] has one RGB output, one LVDS output and one
 278                  * (currently unsupported) TCON output.
 279                  */
 280                 [RCAR_DU_OUTPUT_DPAD0] = {
 281                         .possible_crtcs = BIT(1) | BIT(0),
 282                         .port = 0,
 283                 },
 284                 [RCAR_DU_OUTPUT_LVDS0] = {
 285                         .possible_crtcs = BIT(0),
 286                         .port = 1,
 287                 },
 288         },
 289         .num_lvds = 1,
 290 };
 291
 292 static const struct rcar_du_device_info rcar_du_r8a7792_info = {
 293         .gen = 2,
 294         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 295                   | RCAR_DU_FEATURE_INTERLACED
 296                   | RCAR_DU_FEATURE_TVM_SYNC,
 297         .channels_mask = BIT(1) | BIT(0),
 298         .routes = {
 299                 /* R8A7792 has two RGB outputs. */
 300                 [RCAR_DU_OUTPUT_DPAD0] = {
 301                         .possible_crtcs = BIT(0),
 302                         .port = 0,
 303                 },
 304                 [RCAR_DU_OUTPUT_DPAD1] = {
 305                         .possible_crtcs = BIT(1),
 306                         .port = 1,
 307                 },
 308         },
 309 };
 310
 311 static const struct rcar_du_device_info rcar_du_r8a7794_info = {
 312         .gen = 2,
 313         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 314                   | RCAR_DU_FEATURE_INTERLACED
 315                   | RCAR_DU_FEATURE_TVM_SYNC,
 316         .channels_mask = BIT(1) | BIT(0),
 317         .routes = {
 318                 /*
 319                  * R8A7794 has two RGB outputs and one (currently unsupported)
 320                  * TCON output.
 321                  */
 322                 [RCAR_DU_OUTPUT_DPAD0] = {
 323                         .possible_crtcs = BIT(0),
 324                         .port = 0,
 325                 },
 326                 [RCAR_DU_OUTPUT_DPAD1] = {
 327                         .possible_crtcs = BIT(1),
 328                         .port = 1,
 329                 },
 330         },
 331 };
 332
 333 static const struct rcar_du_device_info rcar_du_r8a7795_info = {
 334         .gen = 3,
 335         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 336                   | RCAR_DU_FEATURE_VSP1_SOURCE
 337                   | RCAR_DU_FEATURE_INTERLACED
 338                   | RCAR_DU_FEATURE_TVM_SYNC,
 339         .channels_mask = BIT(3) | BIT(2) | BIT(1) | BIT(0),
 340         .routes = {
 341                 /*
 342                  * R8A7795 has one RGB output, two HDMI outputs and one
 343                  * LVDS output.
 344                  */
 345                 [RCAR_DU_OUTPUT_DPAD0] = {
 346                         .possible_crtcs = BIT(3),
 347                         .port = 0,
 348                 },
 349                 [RCAR_DU_OUTPUT_HDMI0] = {
 350                         .possible_crtcs = BIT(1),
 351                         .port = 1,
 352                 },
 353                 [RCAR_DU_OUTPUT_HDMI1] = {
 354                         .possible_crtcs = BIT(2),
 355                         .port = 2,
 356                 },
 357                 [RCAR_DU_OUTPUT_LVDS0] = {
 358                         .possible_crtcs = BIT(0),
 359                         .port = 3,
 360                 },
 361         },
 362         .num_lvds = 1,
 363         .dpll_mask =  BIT(2) | BIT(1),
 364 };
 365
 366 static const struct rcar_du_device_info rcar_du_r8a7796_info = {
 367         .gen = 3,
 368         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 369                   | RCAR_DU_FEATURE_VSP1_SOURCE
 370                   | RCAR_DU_FEATURE_INTERLACED
 371                   | RCAR_DU_FEATURE_TVM_SYNC,
 372         .channels_mask = BIT(2) | BIT(1) | BIT(0),
 373         .routes = {
 374                 /*
 375                  * R8A7796 has one RGB output, one LVDS output and one HDMI
 376                  * output.
 377                  */
 378                 [RCAR_DU_OUTPUT_DPAD0] = {
 379                         .possible_crtcs = BIT(2),
 380                         .port = 0,
 381                 },
 382                 [RCAR_DU_OUTPUT_HDMI0] = {
 383                         .possible_crtcs = BIT(1),
 384                         .port = 1,
 385                 },
 386                 [RCAR_DU_OUTPUT_LVDS0] = {
 387                         .possible_crtcs = BIT(0),
 388                         .port = 2,
 389                 },
 390         },
 391         .num_lvds = 1,
 392         .dpll_mask =  BIT(1),
 393 };
 394
 395 static const struct rcar_du_device_info rcar_du_r8a77965_info = {
 396         .gen = 3,
 397         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 398                   | RCAR_DU_FEATURE_VSP1_SOURCE
 399                   | RCAR_DU_FEATURE_INTERLACED
 400                   | RCAR_DU_FEATURE_TVM_SYNC,
 401         .channels_mask = BIT(3) | BIT(1) | BIT(0),
 402         .routes = {
 403                 /*
 404                  * R8A77965 has one RGB output, one LVDS output and one HDMI
 405                  * output.
 406                  */
 407                 [RCAR_DU_OUTPUT_DPAD0] = {
 408                         .possible_crtcs = BIT(2),
 409                         .port = 0,
 410                 },
 411                 [RCAR_DU_OUTPUT_HDMI0] = {
 412                         .possible_crtcs = BIT(1),
 413                         .port = 1,
 414                 },
 415                 [RCAR_DU_OUTPUT_LVDS0] = {
 416                         .possible_crtcs = BIT(0),
 417                         .port = 2,
 418                 },
 419         },
 420         .num_lvds = 1,
 421         .dpll_mask =  BIT(1),
 422 };
 423
 424 static const struct rcar_du_device_info rcar_du_r8a77970_info = {
 425         .gen = 3,
 426         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 427                   | RCAR_DU_FEATURE_VSP1_SOURCE
 428                   | RCAR_DU_FEATURE_INTERLACED
 429                   | RCAR_DU_FEATURE_TVM_SYNC,
 430         .channels_mask = BIT(0),
 431         .routes = {
 432                 /*
 433                  * R8A77970 and R8A77980 have one RGB output and one LVDS
 434                  * output.
 435                  */
 436                 [RCAR_DU_OUTPUT_DPAD0] = {
 437                         .possible_crtcs = BIT(0),
 438                         .port = 0,
 439                 },
 440                 [RCAR_DU_OUTPUT_LVDS0] = {
 441                         .possible_crtcs = BIT(0),
 442                         .port = 1,
 443                 },
 444         },
 445         .num_lvds = 1,
 446 };
 447
 448 static const struct rcar_du_device_info rcar_du_r8a7799x_info = {
 449         .gen = 3,
 450         .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
 451                   | RCAR_DU_FEATURE_VSP1_SOURCE,
 452         .channels_mask = BIT(1) | BIT(0),
 453         .routes = {
 454                 /*
 455                  * R8A77990 and R8A77995 have one RGB output and two LVDS
 456                  * outputs.
 457                  */
 458                 [RCAR_DU_OUTPUT_DPAD0] = {
 459                         .possible_crtcs = BIT(0) | BIT(1),
 460                         .port = 0,
 461                 },
 462                 [RCAR_DU_OUTPUT_LVDS0] = {
 463                         .possible_crtcs = BIT(0),
 464                         .port = 1,
 465                 },
 466                 [RCAR_DU_OUTPUT_LVDS1] = {
 467                         .possible_crtcs = BIT(1),
 468                         .port = 2,
 469                 },
 470         },
 471         .num_lvds = 2,
 472         .lvds_clk_mask =  BIT(1) | BIT(0),
 473 };
 474
 475 static const struct of_device_id rcar_du_of_table[] = {
 476         { .compatible = "renesas,du-r8a7742", .data = &rcar_du_r8a7790_info },
 477         { .compatible = "renesas,du-r8a7743", .data = &rzg1_du_r8a7743_info },
 478         { .compatible = "renesas,du-r8a7744", .data = &rzg1_du_r8a7743_info },
 479         { .compatible = "renesas,du-r8a7745", .data = &rzg1_du_r8a7745_info },
 480         { .compatible = "renesas,du-r8a77470", .data = &rzg1_du_r8a77470_info },
 481         { .compatible = "renesas,du-r8a774a1", .data = &rcar_du_r8a774a1_info },
 482         { .compatible = "renesas,du-r8a774b1", .data = &rcar_du_r8a774b1_info },
 483         { .compatible = "renesas,du-r8a774c0", .data = &rcar_du_r8a774c0_info },
 484         { .compatible = "renesas,du-r8a774e1", .data = &rcar_du_r8a774e1_info },
 485         { .compatible = "renesas,du-r8a7779", .data = &rcar_du_r8a7779_info },
 486         { .compatible = "renesas,du-r8a7790", .data = &rcar_du_r8a7790_info },
 487         { .compatible = "renesas,du-r8a7791", .data = &rcar_du_r8a7791_info },
 488         { .compatible = "renesas,du-r8a7792", .data = &rcar_du_r8a7792_info },
 489         { .compatible = "renesas,du-r8a7793", .data = &rcar_du_r8a7791_info },
 490         { .compatible = "renesas,du-r8a7794", .data = &rcar_du_r8a7794_info },
 491         { .compatible = "renesas,du-r8a7795", .data = &rcar_du_r8a7795_info },
 492         { .compatible = "renesas,du-r8a7796", .data = &rcar_du_r8a7796_info },
 493         { .compatible = "renesas,du-r8a77961", .data = &rcar_du_r8a7796_info },
 494         { .compatible = "renesas,du-r8a77965", .data = &rcar_du_r8a77965_info },
 495         { .compatible = "renesas,du-r8a77970", .data = &rcar_du_r8a77970_info },
 496         { .compatible = "renesas,du-r8a77980", .data = &rcar_du_r8a77970_info },
 497         { .compatible = "renesas,du-r8a77990", .data = &rcar_du_r8a7799x_info },
 498         { .compatible = "renesas,du-r8a77995", .data = &rcar_du_r8a7799x_info },
 499         { }
 500 };
 501
 502 MODULE_DEVICE_TABLE(of, rcar_du_of_table);
 503
 504 /* -----------------------------------------------------------------------------
 505  * DRM operations
 506  */
 507
 508 DEFINE_DRM_GEM_CMA_FOPS(rcar_du_fops);
 509
 510 static struct drm_driver rcar_du_driver = {
 511         .driver_features        = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
 512         DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(rcar_du_dumb_create),
 513         .fops                   = &rcar_du_fops,
 514         .name                   = "rcar-du",
 515         .desc                   = "Renesas R-Car Display Unit",
 516         .date                   = "20130110",
 517         .major                  = 1,
 518         .minor                  = 0,
 519 };
 520
 521 /* -----------------------------------------------------------------------------
 522  * Power management
 523  */
 524
 525 #ifdef CONFIG_PM_SLEEP
 526 static int rcar_du_pm_suspend(struct device *dev)
 527 {
 528         struct rcar_du_device *rcdu = dev_get_drvdata(dev);
 529
 530         return drm_mode_config_helper_suspend(rcdu->ddev);
 531 }
 532
 533 static int rcar_du_pm_resume(struct device *dev)
 534 {
 535         struct rcar_du_device *rcdu = dev_get_drvdata(dev);
 536
 537         return drm_mode_config_helper_resume(rcdu->ddev);
 538 }
 539 #endif
 540
 541 static const struct dev_pm_ops rcar_du_pm_ops = {
 542         SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend, rcar_du_pm_resume)
 543 };
 544
 545 /* -----------------------------------------------------------------------------
 546  * Platform driver
 547  */
 548
 549 static int rcar_du_remove(struct platform_device *pdev)
 550 {
 551         struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
 552         struct drm_device *ddev = rcdu->ddev;
 553
 554         drm_dev_unregister(ddev);
 555
 556         drm_kms_helper_poll_fini(ddev);
 557
 558         drm_dev_put(ddev);
 559
 560         return 0;
 561 }
 562
 563 static int rcar_du_probe(struct platform_device *pdev)
 564 {
 565         struct rcar_du_device *rcdu;
 566         struct drm_device *ddev;
 567         struct resource *mem;
 568         int ret;
 569
 570         /* Allocate and initialize the R-Car device structure. */
 571         rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL);
 572         if (rcdu == NULL)
 573                 return -ENOMEM;
 574
 575         rcdu->dev = &pdev->dev;
 576         rcdu->info = of_device_get_match_data(rcdu->dev);
 577
 578         platform_set_drvdata(pdev, rcdu);
 579
 580         /* I/O resources */
 581         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 582         rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem);
 583         if (IS_ERR(rcdu->mmio))
 584                 return PTR_ERR(rcdu->mmio);
 585
 586         /* DRM/KMS objects */
 587         ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev);
 588         if (IS_ERR(ddev))
 589                 return PTR_ERR(ddev);
 590
 591         rcdu->ddev = ddev;
 592         ddev->dev_private = rcdu;
 593
 594         ret = rcar_du_modeset_init(rcdu);
 595         if (ret < 0) {
 596                 if (ret != -EPROBE_DEFER)
 597                         dev_err(&pdev->dev,
 598                                 "failed to initialize DRM/KMS (%d)\n", ret);
 599                 goto error;
 600         }
 601
 602         ddev->irq_enabled = 1;
 603
 604         /*
 605          * Register the DRM device with the core and the connectors with
 606          * sysfs.
 607          */
 608         ret = drm_dev_register(ddev, 0);
 609         if (ret)
 610                 goto error;
 611
 612         DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
 613
 614         drm_fbdev_generic_setup(ddev, 32);
 615
 616         return 0;
 617
 618 error:
 619         rcar_du_remove(pdev);
 620
 621         return ret;
 622 }
 623
 624 static struct platform_driver rcar_du_platform_driver = {
 625         .probe          = rcar_du_probe,
 626         .remove         = rcar_du_remove,
 627         .driver         = {
 628                 .name   = "rcar-du",
 629                 .pm     = &rcar_du_pm_ops,
 630                 .of_match_table = rcar_du_of_table,
 631         },
 632 };
 633
 634 static int __init rcar_du_init(void)
 635 {
 636         rcar_du_of_init(rcar_du_of_table);
 637
 638         return platform_driver_register(&rcar_du_platform_driver);
 639 }
 640 module_init(rcar_du_init);
 641
 642 static void __exit rcar_du_exit(void)
 643 {
 644         platform_driver_unregister(&rcar_du_platform_driver);
 645 }
 646 module_exit(rcar_du_exit);
 647
 648 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
 649 MODULE_DESCRIPTION("Renesas R-Car Display Unit DRM Driver");
 650 MODULE_LICENSE("GPL");