drivers/gpu/drm/shmobile/shmob_drm_crtc.c

   1 /*
   2  * shmob_drm_crtc.c  --  SH Mobile DRM CRTCs
   3  *
   4  * Copyright (C) 2012 Renesas Electronics Corporation
   5  *
   6  * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13
  14 #include <linux/backlight.h>
  15 #include <linux/clk.h>
  16
  17 #include <drm/drmP.h>
  18 #include <drm/drm_crtc.h>
  19 #include <drm/drm_crtc_helper.h>
  20 #include <drm/drm_fb_cma_helper.h>
  21 #include <drm/drm_gem_cma_helper.h>
  22 #include <drm/drm_plane_helper.h>
  23
  24 #include "shmob_drm_backlight.h"
  25 #include "shmob_drm_crtc.h"
  26 #include "shmob_drm_drv.h"
  27 #include "shmob_drm_kms.h"
  28 #include "shmob_drm_plane.h"
  29 #include "shmob_drm_regs.h"
  30
  31 /*
  32  * TODO: panel support
  33  */
  34
  35 /* -----------------------------------------------------------------------------
  36  * Clock management
  37  */
  38
  39 static int shmob_drm_clk_on(struct shmob_drm_device *sdev)
  40 {
  41         int ret;
  42
  43         if (sdev->clock) {
  44                 ret = clk_prepare_enable(sdev->clock);
  45                 if (ret < 0)
  46                         return ret;
  47         }
  48
  49         return 0;
  50 }
  51
  52 static void shmob_drm_clk_off(struct shmob_drm_device *sdev)
  53 {
  54         if (sdev->clock)
  55                 clk_disable_unprepare(sdev->clock);
  56 }
  57
  58 /* -----------------------------------------------------------------------------
  59  * CRTC
  60  */
  61
  62 static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc)
  63 {
  64         struct drm_crtc *crtc = &scrtc->crtc;
  65         struct shmob_drm_device *sdev = crtc->dev->dev_private;
  66         const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
  67         const struct drm_display_mode *mode = &crtc->mode;
  68         u32 value;
  69
  70         value = sdev->ldmt1r
  71               | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL)
  72               | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL)
  73               | ((idata->flags & SHMOB_DRM_IFACE_FL_DWPOL) ? LDMT1R_DWPOL : 0)
  74               | ((idata->flags & SHMOB_DRM_IFACE_FL_DIPOL) ? LDMT1R_DIPOL : 0)
  75               | ((idata->flags & SHMOB_DRM_IFACE_FL_DAPOL) ? LDMT1R_DAPOL : 0)
  76               | ((idata->flags & SHMOB_DRM_IFACE_FL_HSCNT) ? LDMT1R_HSCNT : 0)
  77               | ((idata->flags & SHMOB_DRM_IFACE_FL_DWCNT) ? LDMT1R_DWCNT : 0);
  78         lcdc_write(sdev, LDMT1R, value);
  79
  80         if (idata->interface >= SHMOB_DRM_IFACE_SYS8A &&
  81             idata->interface <= SHMOB_DRM_IFACE_SYS24) {
  82                 /* Setup SYS bus. */
  83                 value = (idata->sys.cs_setup << LDMT2R_CSUP_SHIFT)
  84                       | (idata->sys.vsync_active_high ? LDMT2R_RSV : 0)
  85                       | (idata->sys.vsync_dir_input ? LDMT2R_VSEL : 0)
  86                       | (idata->sys.write_setup << LDMT2R_WCSC_SHIFT)
  87                       | (idata->sys.write_cycle << LDMT2R_WCEC_SHIFT)
  88                       | (idata->sys.write_strobe << LDMT2R_WCLW_SHIFT);
  89                 lcdc_write(sdev, LDMT2R, value);
  90
  91                 value = (idata->sys.read_latch << LDMT3R_RDLC_SHIFT)
  92                       | (idata->sys.read_setup << LDMT3R_RCSC_SHIFT)
  93                       | (idata->sys.read_cycle << LDMT3R_RCEC_SHIFT)
  94                       | (idata->sys.read_strobe << LDMT3R_RCLW_SHIFT);
  95                 lcdc_write(sdev, LDMT3R, value);
  96         }
  97
  98         value = ((mode->hdisplay / 8) << 16)                    /* HDCN */
  99               | (mode->htotal / 8);                             /* HTCN */
 100         lcdc_write(sdev, LDHCNR, value);
 101
 102         value = (((mode->hsync_end - mode->hsync_start) / 8) << 16) /* HSYNW */
 103               | (mode->hsync_start / 8);                        /* HSYNP */
 104         lcdc_write(sdev, LDHSYNR, value);
 105
 106         value = ((mode->hdisplay & 7) << 24) | ((mode->htotal & 7) << 16)
 107               | (((mode->hsync_end - mode->hsync_start) & 7) << 8)
 108               | (mode->hsync_start & 7);
 109         lcdc_write(sdev, LDHAJR, value);
 110
 111         value = ((mode->vdisplay) << 16)                        /* VDLN */
 112               | mode->vtotal;                                   /* VTLN */
 113         lcdc_write(sdev, LDVLNR, value);
 114
 115         value = ((mode->vsync_end - mode->vsync_start) << 16)   /* VSYNW */
 116               | mode->vsync_start;                              /* VSYNP */
 117         lcdc_write(sdev, LDVSYNR, value);
 118 }
 119
 120 static void shmob_drm_crtc_start_stop(struct shmob_drm_crtc *scrtc, bool start)
 121 {
 122         struct shmob_drm_device *sdev = scrtc->crtc.dev->dev_private;
 123         u32 value;
 124
 125         value = lcdc_read(sdev, LDCNT2R);
 126         if (start)
 127                 lcdc_write(sdev, LDCNT2R, value | LDCNT2R_DO);
 128         else
 129                 lcdc_write(sdev, LDCNT2R, value & ~LDCNT2R_DO);
 130
 131         /* Wait until power is applied/stopped. */
 132         while (1) {
 133                 value = lcdc_read(sdev, LDPMR) & LDPMR_LPS;
 134                 if ((start && value) || (!start && !value))
 135                         break;
 136
 137                 cpu_relax();
 138         }
 139
 140         if (!start) {
 141                 /* Stop the dot clock. */
 142                 lcdc_write(sdev, LDDCKSTPR, LDDCKSTPR_DCKSTP);
 143         }
 144 }
 145
 146 /*
 147  * shmob_drm_crtc_start - Configure and start the LCDC
 148  * @scrtc: the SH Mobile CRTC
 149  *
 150  * Configure and start the LCDC device. External devices (clocks, MERAM, panels,
 151  * ...) are not touched by this function.
 152  */
 153 static void shmob_drm_crtc_start(struct shmob_drm_crtc *scrtc)
 154 {
 155         struct drm_crtc *crtc = &scrtc->crtc;
 156         struct shmob_drm_device *sdev = crtc->dev->dev_private;
 157         const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
 158         const struct shmob_drm_format_info *format;
 159         struct drm_device *dev = sdev->ddev;
 160         struct drm_plane *plane;
 161         u32 value;
 162         int ret;
 163
 164         if (scrtc->started)
 165                 return;
 166
 167         format = shmob_drm_format_info(crtc->primary->fb->format->format);
 168         if (WARN_ON(format == NULL))
 169                 return;
 170
 171         /* Enable clocks before accessing the hardware. */
 172         ret = shmob_drm_clk_on(sdev);
 173         if (ret < 0)
 174                 return;
 175
 176         /* Reset and enable the LCDC. */
 177         lcdc_write(sdev, LDCNT2R, lcdc_read(sdev, LDCNT2R) | LDCNT2R_BR);
 178         lcdc_wait_bit(sdev, LDCNT2R, LDCNT2R_BR, 0);
 179         lcdc_write(sdev, LDCNT2R, LDCNT2R_ME);
 180
 181         /* Stop the LCDC first and disable all interrupts. */
 182         shmob_drm_crtc_start_stop(scrtc, false);
 183         lcdc_write(sdev, LDINTR, 0);
 184
 185         /* Configure power supply, dot clocks and start them. */
 186         lcdc_write(sdev, LDPMR, 0);
 187
 188         value = sdev->lddckr;
 189         if (idata->clk_div) {
 190                 /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
 191                  * denominator.
 192                  */
 193                 lcdc_write(sdev, LDDCKPAT1R, 0);
 194                 lcdc_write(sdev, LDDCKPAT2R, (1 << (idata->clk_div / 2)) - 1);
 195
 196                 if (idata->clk_div == 1)
 197                         value |= LDDCKR_MOSEL;
 198                 else
 199                         value |= idata->clk_div;
 200         }
 201
 202         lcdc_write(sdev, LDDCKR, value);
 203         lcdc_write(sdev, LDDCKSTPR, 0);
 204         lcdc_wait_bit(sdev, LDDCKSTPR, ~0, 0);
 205
 206         /* TODO: Setup SYS panel */
 207
 208         /* Setup geometry, format, frame buffer memory and operation mode. */
 209         shmob_drm_crtc_setup_geometry(scrtc);
 210
 211         /* TODO: Handle YUV colorspaces. Hardcode REC709 for now. */
 212         lcdc_write(sdev, LDDFR, format->lddfr | LDDFR_CF1);
 213         lcdc_write(sdev, LDMLSR, scrtc->line_size);
 214         lcdc_write(sdev, LDSA1R, scrtc->dma[0]);
 215         if (format->yuv)
 216                 lcdc_write(sdev, LDSA2R, scrtc->dma[1]);
 217         lcdc_write(sdev, LDSM1R, 0);
 218
 219         /* Word and long word swap. */
 220         switch (format->fourcc) {
 221         case DRM_FORMAT_RGB565:
 222         case DRM_FORMAT_NV21:
 223         case DRM_FORMAT_NV61:
 224         case DRM_FORMAT_NV42:
 225                 value = LDDDSR_LS | LDDDSR_WS;
 226                 break;
 227         case DRM_FORMAT_RGB888:
 228         case DRM_FORMAT_NV12:
 229         case DRM_FORMAT_NV16:
 230         case DRM_FORMAT_NV24:
 231                 value = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
 232                 break;
 233         case DRM_FORMAT_ARGB8888:
 234         default:
 235                 value = LDDDSR_LS;
 236                 break;
 237         }
 238         lcdc_write(sdev, LDDDSR, value);
 239
 240         /* Setup planes. */
 241         drm_for_each_legacy_plane(plane, dev) {
 242                 if (plane->crtc == crtc)
 243                         shmob_drm_plane_setup(plane);
 244         }
 245
 246         /* Enable the display output. */
 247         lcdc_write(sdev, LDCNT1R, LDCNT1R_DE);
 248
 249         shmob_drm_crtc_start_stop(scrtc, true);
 250
 251         scrtc->started = true;
 252 }
 253
 254 static void shmob_drm_crtc_stop(struct shmob_drm_crtc *scrtc)
 255 {
 256         struct drm_crtc *crtc = &scrtc->crtc;
 257         struct shmob_drm_device *sdev = crtc->dev->dev_private;
 258
 259         if (!scrtc->started)
 260                 return;
 261
 262         /* Stop the LCDC. */
 263         shmob_drm_crtc_start_stop(scrtc, false);
 264
 265         /* Disable the display output. */
 266         lcdc_write(sdev, LDCNT1R, 0);
 267
 268         /* Stop clocks. */
 269         shmob_drm_clk_off(sdev);
 270
 271         scrtc->started = false;
 272 }
 273
 274 void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc)
 275 {
 276         shmob_drm_crtc_stop(scrtc);
 277 }
 278
 279 void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc)
 280 {
 281         if (scrtc->dpms != DRM_MODE_DPMS_ON)
 282                 return;
 283
 284         shmob_drm_crtc_start(scrtc);
 285 }
 286
 287 static void shmob_drm_crtc_compute_base(struct shmob_drm_crtc *scrtc,
 288                                         int x, int y)
 289 {
 290         struct drm_crtc *crtc = &scrtc->crtc;
 291         struct drm_framebuffer *fb = crtc->primary->fb;
 292         struct drm_gem_cma_object *gem;
 293         unsigned int bpp;
 294
 295         bpp = scrtc->format->yuv ? 8 : scrtc->format->bpp;
 296         gem = drm_fb_cma_get_gem_obj(fb, 0);
 297         scrtc->dma[0] = gem->paddr + fb->offsets[0]
 298                       + y * fb->pitches[0] + x * bpp / 8;
 299
 300         if (scrtc->format->yuv) {
 301                 bpp = scrtc->format->bpp - 8;
 302                 gem = drm_fb_cma_get_gem_obj(fb, 1);
 303                 scrtc->dma[1] = gem->paddr + fb->offsets[1]
 304                               + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
 305                               + x * (bpp == 16 ? 2 : 1);
 306         }
 307 }
 308
 309 static void shmob_drm_crtc_update_base(struct shmob_drm_crtc *scrtc)
 310 {
 311         struct drm_crtc *crtc = &scrtc->crtc;
 312         struct shmob_drm_device *sdev = crtc->dev->dev_private;
 313
 314         shmob_drm_crtc_compute_base(scrtc, crtc->x, crtc->y);
 315
 316         lcdc_write_mirror(sdev, LDSA1R, scrtc->dma[0]);
 317         if (scrtc->format->yuv)
 318                 lcdc_write_mirror(sdev, LDSA2R, scrtc->dma[1]);
 319
 320         lcdc_write(sdev, LDRCNTR, lcdc_read(sdev, LDRCNTR) ^ LDRCNTR_MRS);
 321 }
 322
 323 #define to_shmob_crtc(c)        container_of(c, struct shmob_drm_crtc, crtc)
 324
 325 static void shmob_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
 326 {
 327         struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
 328
 329         if (scrtc->dpms == mode)
 330                 return;
 331
 332         if (mode == DRM_MODE_DPMS_ON)
 333                 shmob_drm_crtc_start(scrtc);
 334         else
 335                 shmob_drm_crtc_stop(scrtc);
 336
 337         scrtc->dpms = mode;
 338 }
 339
 340 static void shmob_drm_crtc_mode_prepare(struct drm_crtc *crtc)
 341 {
 342         shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
 343 }
 344
 345 static int shmob_drm_crtc_mode_set(struct drm_crtc *crtc,
 346                                    struct drm_display_mode *mode,
 347                                    struct drm_display_mode *adjusted_mode,
 348                                    int x, int y,
 349                                    struct drm_framebuffer *old_fb)
 350 {
 351         struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
 352         struct shmob_drm_device *sdev = crtc->dev->dev_private;
 353         const struct shmob_drm_format_info *format;
 354
 355         format = shmob_drm_format_info(crtc->primary->fb->format->format);
 356         if (format == NULL) {
 357                 dev_dbg(sdev->dev, "mode_set: unsupported format %08x\n",
 358                         crtc->primary->fb->format->format);
 359                 return -EINVAL;
 360         }
 361
 362         scrtc->format = format;
 363         scrtc->line_size = crtc->primary->fb->pitches[0];
 364
 365         shmob_drm_crtc_compute_base(scrtc, x, y);
 366
 367         return 0;
 368 }
 369
 370 static void shmob_drm_crtc_mode_commit(struct drm_crtc *crtc)
 371 {
 372         shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
 373 }
 374
 375 static int shmob_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 376                                         struct drm_framebuffer *old_fb)
 377 {
 378         shmob_drm_crtc_update_base(to_shmob_crtc(crtc));
 379
 380         return 0;
 381 }
 382
 383 static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
 384         .dpms = shmob_drm_crtc_dpms,
 385         .prepare = shmob_drm_crtc_mode_prepare,
 386         .commit = shmob_drm_crtc_mode_commit,
 387         .mode_set = shmob_drm_crtc_mode_set,
 388         .mode_set_base = shmob_drm_crtc_mode_set_base,
 389 };
 390
 391 void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc)
 392 {
 393         struct drm_pending_vblank_event *event;
 394         struct drm_device *dev = scrtc->crtc.dev;
 395         unsigned long flags;
 396
 397         spin_lock_irqsave(&dev->event_lock, flags);
 398         event = scrtc->event;
 399         scrtc->event = NULL;
 400         if (event) {
 401                 drm_crtc_send_vblank_event(&scrtc->crtc, event);
 402                 drm_crtc_vblank_put(&scrtc->crtc);
 403         }
 404         spin_unlock_irqrestore(&dev->event_lock, flags);
 405 }
 406
 407 static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
 408                                     struct drm_framebuffer *fb,
 409                                     struct drm_pending_vblank_event *event,
 410                                     uint32_t page_flip_flags,
 411                                     struct drm_modeset_acquire_ctx *ctx)
 412 {
 413         struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
 414         struct drm_device *dev = scrtc->crtc.dev;
 415         unsigned long flags;
 416
 417         spin_lock_irqsave(&dev->event_lock, flags);
 418         if (scrtc->event != NULL) {
 419                 spin_unlock_irqrestore(&dev->event_lock, flags);
 420                 return -EBUSY;
 421         }
 422         spin_unlock_irqrestore(&dev->event_lock, flags);
 423
 424         crtc->primary->fb = fb;
 425         shmob_drm_crtc_update_base(scrtc);
 426
 427         if (event) {
 428                 event->pipe = 0;
 429                 drm_crtc_vblank_get(&scrtc->crtc);
 430                 spin_lock_irqsave(&dev->event_lock, flags);
 431                 scrtc->event = event;
 432                 spin_unlock_irqrestore(&dev->event_lock, flags);
 433         }
 434
 435         return 0;
 436 }
 437
 438 static void shmob_drm_crtc_enable_vblank(struct shmob_drm_device *sdev,
 439                                          bool enable)
 440 {
 441         unsigned long flags;
 442         u32 ldintr;
 443
 444         /* Be careful not to acknowledge any pending interrupt. */
 445         spin_lock_irqsave(&sdev->irq_lock, flags);
 446         ldintr = lcdc_read(sdev, LDINTR) | LDINTR_STATUS_MASK;
 447         if (enable)
 448                 ldintr |= LDINTR_VEE;
 449         else
 450                 ldintr &= ~LDINTR_VEE;
 451         lcdc_write(sdev, LDINTR, ldintr);
 452         spin_unlock_irqrestore(&sdev->irq_lock, flags);
 453 }
 454
 455 static int shmob_drm_enable_vblank(struct drm_crtc *crtc)
 456 {
 457         struct shmob_drm_device *sdev = crtc->dev->dev_private;
 458
 459         shmob_drm_crtc_enable_vblank(sdev, true);
 460
 461         return 0;
 462 }
 463
 464 static void shmob_drm_disable_vblank(struct drm_crtc *crtc)
 465 {
 466         struct shmob_drm_device *sdev = crtc->dev->dev_private;
 467
 468         shmob_drm_crtc_enable_vblank(sdev, false);
 469 }
 470
 471 static const struct drm_crtc_funcs crtc_funcs = {
 472         .destroy = drm_crtc_cleanup,
 473         .set_config = drm_crtc_helper_set_config,
 474         .page_flip = shmob_drm_crtc_page_flip,
 475         .enable_vblank = shmob_drm_enable_vblank,
 476         .disable_vblank = shmob_drm_disable_vblank,
 477 };
 478
 479 int shmob_drm_crtc_create(struct shmob_drm_device *sdev)
 480 {
 481         struct drm_crtc *crtc = &sdev->crtc.crtc;
 482         int ret;
 483
 484         sdev->crtc.dpms = DRM_MODE_DPMS_OFF;
 485
 486         ret = drm_crtc_init(sdev->ddev, crtc, &crtc_funcs);
 487         if (ret < 0)
 488                 return ret;
 489
 490         drm_crtc_helper_add(crtc, &crtc_helper_funcs);
 491
 492         return 0;
 493 }
 494
 495 /* -----------------------------------------------------------------------------
 496  * Encoder
 497  */
 498
 499 #define to_shmob_encoder(e) \
 500         container_of(e, struct shmob_drm_encoder, encoder)
 501
 502 static void shmob_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
 503 {
 504         struct shmob_drm_encoder *senc = to_shmob_encoder(encoder);
 505         struct shmob_drm_device *sdev = encoder->dev->dev_private;
 506         struct shmob_drm_connector *scon = &sdev->connector;
 507
 508         if (senc->dpms == mode)
 509                 return;
 510
 511         shmob_drm_backlight_dpms(scon, mode);
 512
 513         senc->dpms = mode;
 514 }
 515
 516 static bool shmob_drm_encoder_mode_fixup(struct drm_encoder *encoder,
 517                                          const struct drm_display_mode *mode,
 518                                          struct drm_display_mode *adjusted_mode)
 519 {
 520         struct drm_device *dev = encoder->dev;
 521         struct shmob_drm_device *sdev = dev->dev_private;
 522         struct drm_connector *connector = &sdev->connector.connector;
 523         const struct drm_display_mode *panel_mode;
 524
 525         if (list_empty(&connector->modes)) {
 526                 dev_dbg(dev->dev, "mode_fixup: empty modes list\n");
 527                 return false;
 528         }
 529
 530         /* The flat panel mode is fixed, just copy it to the adjusted mode. */
 531         panel_mode = list_first_entry(&connector->modes,
 532                                       struct drm_display_mode, head);
 533         drm_mode_copy(adjusted_mode, panel_mode);
 534
 535         return true;
 536 }
 537
 538 static void shmob_drm_encoder_mode_prepare(struct drm_encoder *encoder)
 539 {
 540         /* No-op, everything is handled in the CRTC code. */
 541 }
 542
 543 static void shmob_drm_encoder_mode_set(struct drm_encoder *encoder,
 544                                        struct drm_display_mode *mode,
 545                                        struct drm_display_mode *adjusted_mode)
 546 {
 547         /* No-op, everything is handled in the CRTC code. */
 548 }
 549
 550 static void shmob_drm_encoder_mode_commit(struct drm_encoder *encoder)
 551 {
 552         /* No-op, everything is handled in the CRTC code. */
 553 }
 554
 555 static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
 556         .dpms = shmob_drm_encoder_dpms,
 557         .mode_fixup = shmob_drm_encoder_mode_fixup,
 558         .prepare = shmob_drm_encoder_mode_prepare,
 559         .commit = shmob_drm_encoder_mode_commit,
 560         .mode_set = shmob_drm_encoder_mode_set,
 561 };
 562
 563 static void shmob_drm_encoder_destroy(struct drm_encoder *encoder)
 564 {
 565         drm_encoder_cleanup(encoder);
 566 }
 567
 568 static const struct drm_encoder_funcs encoder_funcs = {
 569         .destroy = shmob_drm_encoder_destroy,
 570 };
 571
 572 int shmob_drm_encoder_create(struct shmob_drm_device *sdev)
 573 {
 574         struct drm_encoder *encoder = &sdev->encoder.encoder;
 575         int ret;
 576
 577         sdev->encoder.dpms = DRM_MODE_DPMS_OFF;
 578
 579         encoder->possible_crtcs = 1;
 580
 581         ret = drm_encoder_init(sdev->ddev, encoder, &encoder_funcs,
 582                                DRM_MODE_ENCODER_LVDS, NULL);
 583         if (ret < 0)
 584                 return ret;
 585
 586         drm_encoder_helper_add(encoder, &encoder_helper_funcs);
 587
 588         return 0;
 589 }
 590
 591 /* -----------------------------------------------------------------------------
 592  * Connector
 593  */
 594
 595 #define to_shmob_connector(c) \
 596         container_of(c, struct shmob_drm_connector, connector)
 597
 598 static int shmob_drm_connector_get_modes(struct drm_connector *connector)
 599 {
 600         struct shmob_drm_device *sdev = connector->dev->dev_private;
 601         struct drm_display_mode *mode;
 602
 603         mode = drm_mode_create(connector->dev);
 604         if (mode == NULL)
 605                 return 0;
 606
 607         mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
 608         mode->clock = sdev->pdata->panel.mode.clock;
 609         mode->hdisplay = sdev->pdata->panel.mode.hdisplay;
 610         mode->hsync_start = sdev->pdata->panel.mode.hsync_start;
 611         mode->hsync_end = sdev->pdata->panel.mode.hsync_end;
 612         mode->htotal = sdev->pdata->panel.mode.htotal;
 613         mode->vdisplay = sdev->pdata->panel.mode.vdisplay;
 614         mode->vsync_start = sdev->pdata->panel.mode.vsync_start;
 615         mode->vsync_end = sdev->pdata->panel.mode.vsync_end;
 616         mode->vtotal = sdev->pdata->panel.mode.vtotal;
 617         mode->flags = sdev->pdata->panel.mode.flags;
 618
 619         drm_mode_set_name(mode);
 620         drm_mode_probed_add(connector, mode);
 621
 622         connector->display_info.width_mm = sdev->pdata->panel.width_mm;
 623         connector->display_info.height_mm = sdev->pdata->panel.height_mm;
 624
 625         return 1;
 626 }
 627
 628 static struct drm_encoder *
 629 shmob_drm_connector_best_encoder(struct drm_connector *connector)
 630 {
 631         struct shmob_drm_connector *scon = to_shmob_connector(connector);
 632
 633         return scon->encoder;
 634 }
 635
 636 static const struct drm_connector_helper_funcs connector_helper_funcs = {
 637         .get_modes = shmob_drm_connector_get_modes,
 638         .best_encoder = shmob_drm_connector_best_encoder,
 639 };
 640
 641 static void shmob_drm_connector_destroy(struct drm_connector *connector)
 642 {
 643         struct shmob_drm_connector *scon = to_shmob_connector(connector);
 644
 645         shmob_drm_backlight_exit(scon);
 646         drm_connector_unregister(connector);
 647         drm_connector_cleanup(connector);
 648 }
 649
 650 static const struct drm_connector_funcs connector_funcs = {
 651         .dpms = drm_helper_connector_dpms,
 652         .fill_modes = drm_helper_probe_single_connector_modes,
 653         .destroy = shmob_drm_connector_destroy,
 654 };
 655
 656 int shmob_drm_connector_create(struct shmob_drm_device *sdev,
 657                                struct drm_encoder *encoder)
 658 {
 659         struct drm_connector *connector = &sdev->connector.connector;
 660         int ret;
 661
 662         sdev->connector.encoder = encoder;
 663
 664         connector->display_info.width_mm = sdev->pdata->panel.width_mm;
 665         connector->display_info.height_mm = sdev->pdata->panel.height_mm;
 666
 667         ret = drm_connector_init(sdev->ddev, connector, &connector_funcs,
 668                                  DRM_MODE_CONNECTOR_LVDS);
 669         if (ret < 0)
 670                 return ret;
 671
 672         drm_connector_helper_add(connector, &connector_helper_funcs);
 673
 674         ret = shmob_drm_backlight_init(&sdev->connector);
 675         if (ret < 0)
 676                 goto err_cleanup;
 677
 678         ret = drm_connector_attach_encoder(connector, encoder);
 679         if (ret < 0)
 680                 goto err_backlight;
 681
 682         drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
 683         drm_object_property_set_value(&connector->base,
 684                 sdev->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
 685
 686         return 0;
 687
 688 err_backlight:
 689         shmob_drm_backlight_exit(&sdev->connector);
 690 err_cleanup:
 691         drm_connector_cleanup(connector);
 692         return ret;
 693 }