1 /* exynos_drm_vidi.c 2 * 3 * Copyright (C) 2012 Samsung Electronics Co.Ltd 4 * Authors: 5 * Inki Dae <inki.dae@samsung.com> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 * 12 */ 13 #include "drmP.h" 14 15 #include <linux/kernel.h> 16 #include <linux/module.h> 17 #include <linux/platform_device.h> 18 19 #include <drm/exynos_drm.h> 20 21 #include "drm_edid.h" 22 #include "drm_crtc_helper.h" 23 24 #include "exynos_drm_drv.h" 25 #include "exynos_drm_crtc.h" 26 #include "exynos_drm_encoder.h" 27 28 /* vidi has totally three virtual windows. */ 29 #define WINDOWS_NR 3 30 31 #define get_vidi_context(dev) platform_get_drvdata(to_platform_device(dev)) 32 33 struct vidi_win_data { 34 unsigned int offset_x; 35 unsigned int offset_y; 36 unsigned int ovl_width; 37 unsigned int ovl_height; 38 unsigned int fb_width; 39 unsigned int fb_height; 40 unsigned int bpp; 41 dma_addr_t dma_addr; 42 void __iomem *vaddr; 43 unsigned int buf_offsize; 44 unsigned int line_size; /* bytes */ 45 bool enabled; 46 }; 47 48 struct vidi_context { 49 struct exynos_drm_subdrv subdrv; 50 struct drm_crtc *crtc; 51 struct vidi_win_data win_data[WINDOWS_NR]; 52 struct edid *raw_edid; 53 unsigned int clkdiv; 54 unsigned int default_win; 55 unsigned long irq_flags; 56 unsigned int connected; 57 bool vblank_on; 58 bool suspended; 59 struct work_struct work; 60 struct mutex lock; 61 }; 62 63 static const char fake_edid_info[] = { 64 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x4c, 0x2d, 0x05, 0x05, 65 0x00, 0x00, 0x00, 0x00, 0x30, 0x12, 0x01, 0x03, 0x80, 0x10, 0x09, 0x78, 66 0x0a, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, 0xbd, 67 0xee, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 68 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x66, 0x21, 0x50, 0xb0, 0x51, 0x00, 69 0x1b, 0x30, 0x40, 0x70, 0x36, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 70 0x01, 0x1d, 0x00, 0x72, 0x51, 0xd0, 0x1e, 0x20, 0x6e, 0x28, 0x55, 0x00, 71 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, 72 0x4b, 0x1a, 0x44, 0x17, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 73 0x00, 0x00, 0x00, 0xfc, 0x00, 0x53, 0x41, 0x4d, 0x53, 0x55, 0x4e, 0x47, 74 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0xbc, 0x02, 0x03, 0x1e, 0xf1, 75 0x46, 0x84, 0x05, 0x03, 0x10, 0x20, 0x22, 0x23, 0x09, 0x07, 0x07, 0x83, 76 0x01, 0x00, 0x00, 0xe2, 0x00, 0x0f, 0x67, 0x03, 0x0c, 0x00, 0x10, 0x00, 77 0xb8, 0x2d, 0x01, 0x1d, 0x80, 0x18, 0x71, 0x1c, 0x16, 0x20, 0x58, 0x2c, 78 0x25, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x9e, 0x8c, 0x0a, 0xd0, 0x8a, 79 0x20, 0xe0, 0x2d, 0x10, 0x10, 0x3e, 0x96, 0x00, 0xa0, 0x5a, 0x00, 0x00, 80 0x00, 0x18, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c, 81 0x45, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 82 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 83 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 84 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 85 0x00, 0x00, 0x00, 0x06 86 }; 87 88 static bool vidi_display_is_connected(struct device *dev) 89 { 90 struct vidi_context *ctx = get_vidi_context(dev); 91 92 DRM_DEBUG_KMS("%s\n", __FILE__); 93 94 /* 95 * connection request would come from user side 96 * to do hotplug through specific ioctl. 97 */ 98 return ctx->connected ? true : false; 99 } 100 101 static int vidi_get_edid(struct device *dev, struct drm_connector *connector, 102 u8 *edid, int len) 103 { 104 struct vidi_context *ctx = get_vidi_context(dev); 105 struct edid *raw_edid; 106 107 DRM_DEBUG_KMS("%s\n", __FILE__); 108 109 /* 110 * the edid data comes from user side and it would be set 111 * to ctx->raw_edid through specific ioctl. 112 */ 113 if (!ctx->raw_edid) { 114 DRM_DEBUG_KMS("raw_edid is null.\n"); 115 return -EFAULT; 116 } 117 118 raw_edid = kzalloc(len, GFP_KERNEL); 119 if (!raw_edid) { 120 DRM_DEBUG_KMS("failed to allocate raw_edid.\n"); 121 return -ENOMEM; 122 } 123 124 memcpy(raw_edid, ctx->raw_edid, min((1 + ctx->raw_edid->extensions) 125 * EDID_LENGTH, len)); 126 127 /* attach the edid data to connector. */ 128 connector->display_info.raw_edid = (char *)raw_edid; 129 130 memcpy(edid, ctx->raw_edid, min((1 + ctx->raw_edid->extensions) 131 * EDID_LENGTH, len)); 132 133 return 0; 134 } 135 136 static void *vidi_get_panel(struct device *dev) 137 { 138 DRM_DEBUG_KMS("%s\n", __FILE__); 139 140 /* TODO. */ 141 142 return NULL; 143 } 144 145 static int vidi_check_timing(struct device *dev, void *timing) 146 { 147 DRM_DEBUG_KMS("%s\n", __FILE__); 148 149 /* TODO. */ 150 151 return 0; 152 } 153 154 static int vidi_display_power_on(struct device *dev, int mode) 155 { 156 DRM_DEBUG_KMS("%s\n", __FILE__); 157 158 /* TODO */ 159 160 return 0; 161 } 162 163 static struct exynos_drm_display_ops vidi_display_ops = { 164 .type = EXYNOS_DISPLAY_TYPE_VIDI, 165 .is_connected = vidi_display_is_connected, 166 .get_edid = vidi_get_edid, 167 .get_panel = vidi_get_panel, 168 .check_timing = vidi_check_timing, 169 .power_on = vidi_display_power_on, 170 }; 171 172 static void vidi_dpms(struct device *subdrv_dev, int mode) 173 { 174 struct vidi_context *ctx = get_vidi_context(subdrv_dev); 175 176 DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode); 177 178 mutex_lock(&ctx->lock); 179 180 switch (mode) { 181 case DRM_MODE_DPMS_ON: 182 /* TODO. */ 183 break; 184 case DRM_MODE_DPMS_STANDBY: 185 case DRM_MODE_DPMS_SUSPEND: 186 case DRM_MODE_DPMS_OFF: 187 /* TODO. */ 188 break; 189 default: 190 DRM_DEBUG_KMS("unspecified mode %d\n", mode); 191 break; 192 } 193 194 mutex_unlock(&ctx->lock); 195 } 196 197 static void vidi_apply(struct device *subdrv_dev) 198 { 199 struct vidi_context *ctx = get_vidi_context(subdrv_dev); 200 struct exynos_drm_manager *mgr = ctx->subdrv.manager; 201 struct exynos_drm_manager_ops *mgr_ops = mgr->ops; 202 struct exynos_drm_overlay_ops *ovl_ops = mgr->overlay_ops; 203 struct vidi_win_data *win_data; 204 int i; 205 206 DRM_DEBUG_KMS("%s\n", __FILE__); 207 208 for (i = 0; i < WINDOWS_NR; i++) { 209 win_data = &ctx->win_data[i]; 210 if (win_data->enabled && (ovl_ops && ovl_ops->commit)) 211 ovl_ops->commit(subdrv_dev, i); 212 } 213 214 if (mgr_ops && mgr_ops->commit) 215 mgr_ops->commit(subdrv_dev); 216 } 217 218 static void vidi_commit(struct device *dev) 219 { 220 struct vidi_context *ctx = get_vidi_context(dev); 221 222 DRM_DEBUG_KMS("%s\n", __FILE__); 223 224 if (ctx->suspended) 225 return; 226 } 227 228 static int vidi_enable_vblank(struct device *dev) 229 { 230 struct vidi_context *ctx = get_vidi_context(dev); 231 232 DRM_DEBUG_KMS("%s\n", __FILE__); 233 234 if (ctx->suspended) 235 return -EPERM; 236 237 if (!test_and_set_bit(0, &ctx->irq_flags)) 238 ctx->vblank_on = true; 239 240 return 0; 241 } 242 243 static void vidi_disable_vblank(struct device *dev) 244 { 245 struct vidi_context *ctx = get_vidi_context(dev); 246 247 DRM_DEBUG_KMS("%s\n", __FILE__); 248 249 if (ctx->suspended) 250 return; 251 252 if (test_and_clear_bit(0, &ctx->irq_flags)) 253 ctx->vblank_on = false; 254 } 255 256 static struct exynos_drm_manager_ops vidi_manager_ops = { 257 .dpms = vidi_dpms, 258 .apply = vidi_apply, 259 .commit = vidi_commit, 260 .enable_vblank = vidi_enable_vblank, 261 .disable_vblank = vidi_disable_vblank, 262 }; 263 264 static void vidi_win_mode_set(struct device *dev, 265 struct exynos_drm_overlay *overlay) 266 { 267 struct vidi_context *ctx = get_vidi_context(dev); 268 struct vidi_win_data *win_data; 269 int win; 270 unsigned long offset; 271 272 DRM_DEBUG_KMS("%s\n", __FILE__); 273 274 if (!overlay) { 275 dev_err(dev, "overlay is NULL\n"); 276 return; 277 } 278 279 win = overlay->zpos; 280 if (win == DEFAULT_ZPOS) 281 win = ctx->default_win; 282 283 if (win < 0 || win > WINDOWS_NR) 284 return; 285 286 offset = overlay->fb_x * (overlay->bpp >> 3); 287 offset += overlay->fb_y * overlay->pitch; 288 289 DRM_DEBUG_KMS("offset = 0x%lx, pitch = %x\n", offset, overlay->pitch); 290 291 win_data = &ctx->win_data[win]; 292 293 win_data->offset_x = overlay->crtc_x; 294 win_data->offset_y = overlay->crtc_y; 295 win_data->ovl_width = overlay->crtc_width; 296 win_data->ovl_height = overlay->crtc_height; 297 win_data->fb_width = overlay->fb_width; 298 win_data->fb_height = overlay->fb_height; 299 win_data->dma_addr = overlay->dma_addr[0] + offset; 300 win_data->vaddr = overlay->vaddr[0] + offset; 301 win_data->bpp = overlay->bpp; 302 win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) * 303 (overlay->bpp >> 3); 304 win_data->line_size = overlay->crtc_width * (overlay->bpp >> 3); 305 306 /* 307 * some parts of win_data should be transferred to user side 308 * through specific ioctl. 309 */ 310 311 DRM_DEBUG_KMS("offset_x = %d, offset_y = %d\n", 312 win_data->offset_x, win_data->offset_y); 313 DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n", 314 win_data->ovl_width, win_data->ovl_height); 315 DRM_DEBUG_KMS("paddr = 0x%lx, vaddr = 0x%lx\n", 316 (unsigned long)win_data->dma_addr, 317 (unsigned long)win_data->vaddr); 318 DRM_DEBUG_KMS("fb_width = %d, crtc_width = %d\n", 319 overlay->fb_width, overlay->crtc_width); 320 } 321 322 static void vidi_win_commit(struct device *dev, int zpos) 323 { 324 struct vidi_context *ctx = get_vidi_context(dev); 325 struct vidi_win_data *win_data; 326 int win = zpos; 327 328 DRM_DEBUG_KMS("%s\n", __FILE__); 329 330 if (ctx->suspended) 331 return; 332 333 if (win == DEFAULT_ZPOS) 334 win = ctx->default_win; 335 336 if (win < 0 || win > WINDOWS_NR) 337 return; 338 339 win_data = &ctx->win_data[win]; 340 341 win_data->enabled = true; 342 343 DRM_DEBUG_KMS("dma_addr = 0x%x\n", win_data->dma_addr); 344 345 if (ctx->vblank_on) 346 schedule_work(&ctx->work); 347 } 348 349 static void vidi_win_disable(struct device *dev, int zpos) 350 { 351 struct vidi_context *ctx = get_vidi_context(dev); 352 struct vidi_win_data *win_data; 353 int win = zpos; 354 355 DRM_DEBUG_KMS("%s\n", __FILE__); 356 357 if (win == DEFAULT_ZPOS) 358 win = ctx->default_win; 359 360 if (win < 0 || win > WINDOWS_NR) 361 return; 362 363 win_data = &ctx->win_data[win]; 364 win_data->enabled = false; 365 366 /* TODO. */ 367 } 368 369 static struct exynos_drm_overlay_ops vidi_overlay_ops = { 370 .mode_set = vidi_win_mode_set, 371 .commit = vidi_win_commit, 372 .disable = vidi_win_disable, 373 }; 374 375 static struct exynos_drm_manager vidi_manager = { 376 .pipe = -1, 377 .ops = &vidi_manager_ops, 378 .overlay_ops = &vidi_overlay_ops, 379 .display_ops = &vidi_display_ops, 380 }; 381 382 static void vidi_finish_pageflip(struct drm_device *drm_dev, int crtc) 383 { 384 struct exynos_drm_private *dev_priv = drm_dev->dev_private; 385 struct drm_pending_vblank_event *e, *t; 386 struct timeval now; 387 unsigned long flags; 388 bool is_checked = false; 389 390 spin_lock_irqsave(&drm_dev->event_lock, flags); 391 392 list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list, 393 base.link) { 394 /* if event's pipe isn't same as crtc then ignore it. */ 395 if (crtc != e->pipe) 396 continue; 397 398 is_checked = true; 399 400 do_gettimeofday(&now); 401 e->event.sequence = 0; 402 e->event.tv_sec = now.tv_sec; 403 e->event.tv_usec = now.tv_usec; 404 405 list_move_tail(&e->base.link, &e->base.file_priv->event_list); 406 wake_up_interruptible(&e->base.file_priv->event_wait); 407 } 408 409 if (is_checked) { 410 /* 411 * call drm_vblank_put only in case that drm_vblank_get was 412 * called. 413 */ 414 if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0) 415 drm_vblank_put(drm_dev, crtc); 416 417 /* 418 * don't off vblank if vblank_disable_allowed is 1, 419 * because vblank would be off by timer handler. 420 */ 421 if (!drm_dev->vblank_disable_allowed) 422 drm_vblank_off(drm_dev, crtc); 423 } 424 425 spin_unlock_irqrestore(&drm_dev->event_lock, flags); 426 } 427 428 static void vidi_fake_vblank_handler(struct work_struct *work) 429 { 430 struct vidi_context *ctx = container_of(work, struct vidi_context, 431 work); 432 struct exynos_drm_subdrv *subdrv = &ctx->subdrv; 433 struct exynos_drm_manager *manager = subdrv->manager; 434 435 if (manager->pipe < 0) 436 return; 437 438 /* refresh rate is about 50Hz. */ 439 usleep_range(16000, 20000); 440 441 drm_handle_vblank(subdrv->drm_dev, manager->pipe); 442 vidi_finish_pageflip(subdrv->drm_dev, manager->pipe); 443 } 444 445 static int vidi_subdrv_probe(struct drm_device *drm_dev, struct device *dev) 446 { 447 DRM_DEBUG_KMS("%s\n", __FILE__); 448 449 /* 450 * enable drm irq mode. 451 * - with irq_enabled = 1, we can use the vblank feature. 452 * 453 * P.S. note that we wouldn't use drm irq handler but 454 * just specific driver own one instead because 455 * drm framework supports only one irq handler. 456 */ 457 drm_dev->irq_enabled = 1; 458 459 /* 460 * with vblank_disable_allowed = 1, vblank interrupt will be disabled 461 * by drm timer once a current process gives up ownership of 462 * vblank event.(after drm_vblank_put function is called) 463 */ 464 drm_dev->vblank_disable_allowed = 1; 465 466 return 0; 467 } 468 469 static void vidi_subdrv_remove(struct drm_device *drm_dev) 470 { 471 DRM_DEBUG_KMS("%s\n", __FILE__); 472 473 /* TODO. */ 474 } 475 476 static int vidi_power_on(struct vidi_context *ctx, bool enable) 477 { 478 struct exynos_drm_subdrv *subdrv = &ctx->subdrv; 479 struct device *dev = subdrv->dev; 480 481 DRM_DEBUG_KMS("%s\n", __FILE__); 482 483 if (enable != false && enable != true) 484 return -EINVAL; 485 486 if (enable) { 487 ctx->suspended = false; 488 489 /* if vblank was enabled status, enable it again. */ 490 if (test_and_clear_bit(0, &ctx->irq_flags)) 491 vidi_enable_vblank(dev); 492 493 vidi_apply(dev); 494 } else { 495 ctx->suspended = true; 496 } 497 498 return 0; 499 } 500 501 static int vidi_show_connection(struct device *dev, 502 struct device_attribute *attr, char *buf) 503 { 504 int rc; 505 struct vidi_context *ctx = get_vidi_context(dev); 506 507 mutex_lock(&ctx->lock); 508 509 rc = sprintf(buf, "%d\n", ctx->connected); 510 511 mutex_unlock(&ctx->lock); 512 513 return rc; 514 } 515 516 static int vidi_store_connection(struct device *dev, 517 struct device_attribute *attr, 518 const char *buf, size_t len) 519 { 520 struct vidi_context *ctx = get_vidi_context(dev); 521 int ret; 522 523 DRM_DEBUG_KMS("%s\n", __FILE__); 524 525 ret = kstrtoint(buf, 0, &ctx->connected); 526 if (ret) 527 return ret; 528 529 if (ctx->connected > 1) 530 return -EINVAL; 531 532 /* use fake edid data for test. */ 533 if (!ctx->raw_edid) 534 ctx->raw_edid = (struct edid *)fake_edid_info; 535 536 /* if raw_edid isn't same as fake data then it can't be tested. */ 537 if (ctx->raw_edid != (struct edid *)fake_edid_info) { 538 DRM_DEBUG_KMS("edid data is not fake data.\n"); 539 return -EINVAL; 540 } 541 542 DRM_DEBUG_KMS("requested connection.\n"); 543 544 drm_helper_hpd_irq_event(ctx->subdrv.drm_dev); 545 546 return len; 547 } 548 549 static DEVICE_ATTR(connection, 0644, vidi_show_connection, 550 vidi_store_connection); 551 552 int vidi_connection_ioctl(struct drm_device *drm_dev, void *data, 553 struct drm_file *file_priv) 554 { 555 struct vidi_context *ctx = NULL; 556 struct drm_encoder *encoder; 557 struct exynos_drm_manager *manager; 558 struct exynos_drm_display_ops *display_ops; 559 struct drm_exynos_vidi_connection *vidi = data; 560 struct edid *raw_edid; 561 int edid_len; 562 563 DRM_DEBUG_KMS("%s\n", __FILE__); 564 565 if (!vidi) { 566 DRM_DEBUG_KMS("user data for vidi is null.\n"); 567 return -EINVAL; 568 } 569 570 if (vidi->connection > 1) { 571 DRM_DEBUG_KMS("connection should be 0 or 1.\n"); 572 return -EINVAL; 573 } 574 575 list_for_each_entry(encoder, &drm_dev->mode_config.encoder_list, 576 head) { 577 manager = exynos_drm_get_manager(encoder); 578 display_ops = manager->display_ops; 579 580 if (display_ops->type == EXYNOS_DISPLAY_TYPE_VIDI) { 581 ctx = get_vidi_context(manager->dev); 582 break; 583 } 584 } 585 586 if (!ctx) { 587 DRM_DEBUG_KMS("not found virtual device type encoder.\n"); 588 return -EINVAL; 589 } 590 591 if (ctx->connected == vidi->connection) { 592 DRM_DEBUG_KMS("same connection request.\n"); 593 return -EINVAL; 594 } 595 596 if (vidi->connection) { 597 if (!vidi->edid) { 598 DRM_DEBUG_KMS("edid data is null.\n"); 599 return -EINVAL; 600 } 601 raw_edid = (struct edid *)(uint32_t)vidi->edid; 602 edid_len = (1 + raw_edid->extensions) * EDID_LENGTH; 603 ctx->raw_edid = kzalloc(edid_len, GFP_KERNEL); 604 if (!ctx->raw_edid) { 605 DRM_DEBUG_KMS("failed to allocate raw_edid.\n"); 606 return -ENOMEM; 607 } 608 memcpy(ctx->raw_edid, raw_edid, edid_len); 609 } else { 610 /* 611 * with connection = 0, free raw_edid 612 * only if raw edid data isn't same as fake data. 613 */ 614 if (ctx->raw_edid && ctx->raw_edid != 615 (struct edid *)fake_edid_info) { 616 kfree(ctx->raw_edid); 617 ctx->raw_edid = NULL; 618 } 619 } 620 621 ctx->connected = vidi->connection; 622 drm_helper_hpd_irq_event(ctx->subdrv.drm_dev); 623 624 return 0; 625 } 626 627 static int __devinit vidi_probe(struct platform_device *pdev) 628 { 629 struct device *dev = &pdev->dev; 630 struct vidi_context *ctx; 631 struct exynos_drm_subdrv *subdrv; 632 int ret; 633 634 DRM_DEBUG_KMS("%s\n", __FILE__); 635 636 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); 637 if (!ctx) 638 return -ENOMEM; 639 640 ctx->default_win = 0; 641 642 INIT_WORK(&ctx->work, vidi_fake_vblank_handler); 643 644 subdrv = &ctx->subdrv; 645 subdrv->dev = dev; 646 subdrv->manager = &vidi_manager; 647 subdrv->probe = vidi_subdrv_probe; 648 subdrv->remove = vidi_subdrv_remove; 649 650 mutex_init(&ctx->lock); 651 652 platform_set_drvdata(pdev, ctx); 653 654 ret = device_create_file(&pdev->dev, &dev_attr_connection); 655 if (ret < 0) 656 DRM_INFO("failed to create connection sysfs.\n"); 657 658 exynos_drm_subdrv_register(subdrv); 659 660 return 0; 661 } 662 663 static int __devexit vidi_remove(struct platform_device *pdev) 664 { 665 struct vidi_context *ctx = platform_get_drvdata(pdev); 666 667 DRM_DEBUG_KMS("%s\n", __FILE__); 668 669 exynos_drm_subdrv_unregister(&ctx->subdrv); 670 671 if (ctx->raw_edid != (struct edid *)fake_edid_info) { 672 kfree(ctx->raw_edid); 673 ctx->raw_edid = NULL; 674 } 675 676 return 0; 677 } 678 679 #ifdef CONFIG_PM_SLEEP 680 static int vidi_suspend(struct device *dev) 681 { 682 struct vidi_context *ctx = get_vidi_context(dev); 683 684 return vidi_power_on(ctx, false); 685 } 686 687 static int vidi_resume(struct device *dev) 688 { 689 struct vidi_context *ctx = get_vidi_context(dev); 690 691 return vidi_power_on(ctx, true); 692 } 693 #endif 694 695 static const struct dev_pm_ops vidi_pm_ops = { 696 SET_SYSTEM_SLEEP_PM_OPS(vidi_suspend, vidi_resume) 697 }; 698 699 struct platform_driver vidi_driver = { 700 .probe = vidi_probe, 701 .remove = __devexit_p(vidi_remove), 702 .driver = { 703 .name = "exynos-drm-vidi", 704 .owner = THIS_MODULE, 705 .pm = &vidi_pm_ops, 706 }, 707 }; 708