1 /* 2 * Copyright (c) 2011 Samsung Electronics Co., Ltd. 3 * Authors: 4 * Inki Dae <inki.dae@samsung.com> 5 * Joonyoung Shim <jy0922.shim@samsung.com> 6 * Seung-Woo Kim <sw0312.kim@samsung.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 */ 13 14 #include <linux/pm_runtime.h> 15 #include <drm/drmP.h> 16 #include <drm/drm_crtc_helper.h> 17 18 #include <linux/component.h> 19 20 #include <drm/exynos_drm.h> 21 22 #include "exynos_drm_drv.h" 23 #include "exynos_drm_crtc.h" 24 #include "exynos_drm_fbdev.h" 25 #include "exynos_drm_fb.h" 26 #include "exynos_drm_gem.h" 27 #include "exynos_drm_plane.h" 28 #include "exynos_drm_vidi.h" 29 #include "exynos_drm_g2d.h" 30 #include "exynos_drm_ipp.h" 31 #include "exynos_drm_iommu.h" 32 33 #define DRIVER_NAME "exynos" 34 #define DRIVER_DESC "Samsung SoC DRM" 35 #define DRIVER_DATE "20110530" 36 #define DRIVER_MAJOR 1 37 #define DRIVER_MINOR 0 38 39 static int exynos_drm_load(struct drm_device *dev, unsigned long flags) 40 { 41 struct exynos_drm_private *private; 42 struct drm_encoder *encoder; 43 unsigned int clone_mask; 44 int cnt, ret; 45 46 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); 47 if (!private) 48 return -ENOMEM; 49 50 dev_set_drvdata(dev->dev, dev); 51 dev->dev_private = (void *)private; 52 53 /* 54 * create mapping to manage iommu table and set a pointer to iommu 55 * mapping structure to iommu_mapping of private data. 56 * also this iommu_mapping can be used to check if iommu is supported 57 * or not. 58 */ 59 ret = drm_create_iommu_mapping(dev); 60 if (ret < 0) { 61 DRM_ERROR("failed to create iommu mapping.\n"); 62 goto err_free_private; 63 } 64 65 drm_mode_config_init(dev); 66 67 exynos_drm_mode_config_init(dev); 68 69 /* setup possible_clones. */ 70 cnt = 0; 71 clone_mask = 0; 72 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 73 clone_mask |= (1 << (cnt++)); 74 75 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 76 encoder->possible_clones = clone_mask; 77 78 platform_set_drvdata(dev->platformdev, dev); 79 80 /* Try to bind all sub drivers. */ 81 ret = component_bind_all(dev->dev, dev); 82 if (ret) 83 goto err_mode_config_cleanup; 84 85 ret = drm_vblank_init(dev, dev->mode_config.num_crtc); 86 if (ret) 87 goto err_unbind_all; 88 89 /* Probe non kms sub drivers and virtual display driver. */ 90 ret = exynos_drm_device_subdrv_probe(dev); 91 if (ret) 92 goto err_cleanup_vblank; 93 94 drm_mode_config_reset(dev); 95 96 /* 97 * enable drm irq mode. 98 * - with irq_enabled = true, we can use the vblank feature. 99 * 100 * P.S. note that we wouldn't use drm irq handler but 101 * just specific driver own one instead because 102 * drm framework supports only one irq handler. 103 */ 104 dev->irq_enabled = true; 105 106 /* 107 * with vblank_disable_allowed = true, vblank interrupt will be disabled 108 * by drm timer once a current process gives up ownership of 109 * vblank event.(after drm_vblank_put function is called) 110 */ 111 dev->vblank_disable_allowed = true; 112 113 /* init kms poll for handling hpd */ 114 drm_kms_helper_poll_init(dev); 115 116 /* force connectors detection */ 117 drm_helper_hpd_irq_event(dev); 118 119 return 0; 120 121 err_cleanup_vblank: 122 drm_vblank_cleanup(dev); 123 err_unbind_all: 124 component_unbind_all(dev->dev, dev); 125 err_mode_config_cleanup: 126 drm_mode_config_cleanup(dev); 127 drm_release_iommu_mapping(dev); 128 err_free_private: 129 kfree(private); 130 131 return ret; 132 } 133 134 static int exynos_drm_unload(struct drm_device *dev) 135 { 136 exynos_drm_device_subdrv_remove(dev); 137 138 exynos_drm_fbdev_fini(dev); 139 drm_kms_helper_poll_fini(dev); 140 141 drm_vblank_cleanup(dev); 142 component_unbind_all(dev->dev, dev); 143 drm_mode_config_cleanup(dev); 144 drm_release_iommu_mapping(dev); 145 146 kfree(dev->dev_private); 147 dev->dev_private = NULL; 148 149 return 0; 150 } 151 152 static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state) 153 { 154 struct drm_connector *connector; 155 156 drm_modeset_lock_all(dev); 157 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 158 int old_dpms = connector->dpms; 159 160 if (connector->funcs->dpms) 161 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF); 162 163 /* Set the old mode back to the connector for resume */ 164 connector->dpms = old_dpms; 165 } 166 drm_modeset_unlock_all(dev); 167 168 return 0; 169 } 170 171 static int exynos_drm_resume(struct drm_device *dev) 172 { 173 struct drm_connector *connector; 174 175 drm_modeset_lock_all(dev); 176 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 177 if (connector->funcs->dpms) { 178 int dpms = connector->dpms; 179 180 connector->dpms = DRM_MODE_DPMS_OFF; 181 connector->funcs->dpms(connector, dpms); 182 } 183 } 184 drm_modeset_unlock_all(dev); 185 186 return 0; 187 } 188 189 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) 190 { 191 struct drm_exynos_file_private *file_priv; 192 int ret; 193 194 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); 195 if (!file_priv) 196 return -ENOMEM; 197 198 file->driver_priv = file_priv; 199 200 ret = exynos_drm_subdrv_open(dev, file); 201 if (ret) 202 goto err_file_priv_free; 203 204 return ret; 205 206 err_file_priv_free: 207 kfree(file_priv); 208 file->driver_priv = NULL; 209 return ret; 210 } 211 212 static void exynos_drm_preclose(struct drm_device *dev, 213 struct drm_file *file) 214 { 215 exynos_drm_subdrv_close(dev, file); 216 } 217 218 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) 219 { 220 struct drm_pending_event *e, *et; 221 unsigned long flags; 222 223 if (!file->driver_priv) 224 return; 225 226 spin_lock_irqsave(&dev->event_lock, flags); 227 /* Release all events handled by page flip handler but not freed. */ 228 list_for_each_entry_safe(e, et, &file->event_list, link) { 229 list_del(&e->link); 230 e->destroy(e); 231 } 232 spin_unlock_irqrestore(&dev->event_lock, flags); 233 234 kfree(file->driver_priv); 235 file->driver_priv = NULL; 236 } 237 238 static void exynos_drm_lastclose(struct drm_device *dev) 239 { 240 exynos_drm_fbdev_restore_mode(dev); 241 } 242 243 static const struct vm_operations_struct exynos_drm_gem_vm_ops = { 244 .fault = exynos_drm_gem_fault, 245 .open = drm_gem_vm_open, 246 .close = drm_gem_vm_close, 247 }; 248 249 static const struct drm_ioctl_desc exynos_ioctls[] = { 250 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 251 DRM_UNLOCKED | DRM_AUTH), 252 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, 253 exynos_drm_gem_get_ioctl, DRM_UNLOCKED), 254 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, 255 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), 256 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, 257 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), 258 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, 259 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), 260 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, 261 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), 262 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, 263 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH), 264 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, 265 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH), 266 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, 267 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH), 268 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, 269 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH), 270 }; 271 272 static const struct file_operations exynos_drm_driver_fops = { 273 .owner = THIS_MODULE, 274 .open = drm_open, 275 .mmap = exynos_drm_gem_mmap, 276 .poll = drm_poll, 277 .read = drm_read, 278 .unlocked_ioctl = drm_ioctl, 279 #ifdef CONFIG_COMPAT 280 .compat_ioctl = drm_compat_ioctl, 281 #endif 282 .release = drm_release, 283 }; 284 285 static struct drm_driver exynos_drm_driver = { 286 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, 287 .load = exynos_drm_load, 288 .unload = exynos_drm_unload, 289 .suspend = exynos_drm_suspend, 290 .resume = exynos_drm_resume, 291 .open = exynos_drm_open, 292 .preclose = exynos_drm_preclose, 293 .lastclose = exynos_drm_lastclose, 294 .postclose = exynos_drm_postclose, 295 .set_busid = drm_platform_set_busid, 296 .get_vblank_counter = drm_vblank_count, 297 .enable_vblank = exynos_drm_crtc_enable_vblank, 298 .disable_vblank = exynos_drm_crtc_disable_vblank, 299 .gem_free_object = exynos_drm_gem_free_object, 300 .gem_vm_ops = &exynos_drm_gem_vm_ops, 301 .dumb_create = exynos_drm_gem_dumb_create, 302 .dumb_map_offset = exynos_drm_gem_dumb_map_offset, 303 .dumb_destroy = drm_gem_dumb_destroy, 304 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 305 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 306 .gem_prime_export = drm_gem_prime_export, 307 .gem_prime_import = drm_gem_prime_import, 308 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table, 309 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table, 310 .gem_prime_vmap = exynos_drm_gem_prime_vmap, 311 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap, 312 .ioctls = exynos_ioctls, 313 .num_ioctls = ARRAY_SIZE(exynos_ioctls), 314 .fops = &exynos_drm_driver_fops, 315 .name = DRIVER_NAME, 316 .desc = DRIVER_DESC, 317 .date = DRIVER_DATE, 318 .major = DRIVER_MAJOR, 319 .minor = DRIVER_MINOR, 320 }; 321 322 #ifdef CONFIG_PM_SLEEP 323 static int exynos_drm_sys_suspend(struct device *dev) 324 { 325 struct drm_device *drm_dev = dev_get_drvdata(dev); 326 pm_message_t message; 327 328 if (pm_runtime_suspended(dev) || !drm_dev) 329 return 0; 330 331 message.event = PM_EVENT_SUSPEND; 332 return exynos_drm_suspend(drm_dev, message); 333 } 334 335 static int exynos_drm_sys_resume(struct device *dev) 336 { 337 struct drm_device *drm_dev = dev_get_drvdata(dev); 338 339 if (pm_runtime_suspended(dev) || !drm_dev) 340 return 0; 341 342 return exynos_drm_resume(drm_dev); 343 } 344 #endif 345 346 static const struct dev_pm_ops exynos_drm_pm_ops = { 347 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume) 348 }; 349 350 /* forward declaration */ 351 static struct platform_driver exynos_drm_platform_driver; 352 353 /* 354 * Connector drivers should not be placed before associated crtc drivers, 355 * because connector requires pipe number of its crtc during initialization. 356 */ 357 static struct platform_driver *const exynos_drm_kms_drivers[] = { 358 #ifdef CONFIG_DRM_EXYNOS_FIMD 359 &fimd_driver, 360 #endif 361 #ifdef CONFIG_DRM_EXYNOS5433_DECON 362 &exynos5433_decon_driver, 363 #endif 364 #ifdef CONFIG_DRM_EXYNOS7_DECON 365 &decon_driver, 366 #endif 367 #ifdef CONFIG_DRM_EXYNOS_MIC 368 &mic_driver, 369 #endif 370 #ifdef CONFIG_DRM_EXYNOS_DP 371 &dp_driver, 372 #endif 373 #ifdef CONFIG_DRM_EXYNOS_DSI 374 &dsi_driver, 375 #endif 376 #ifdef CONFIG_DRM_EXYNOS_HDMI 377 &mixer_driver, 378 &hdmi_driver, 379 #endif 380 #ifdef CONFIG_DRM_EXYNOS_VIDI 381 &vidi_driver, 382 #endif 383 }; 384 385 static struct platform_driver *const exynos_drm_non_kms_drivers[] = { 386 #ifdef CONFIG_DRM_EXYNOS_G2D 387 &g2d_driver, 388 #endif 389 #ifdef CONFIG_DRM_EXYNOS_FIMC 390 &fimc_driver, 391 #endif 392 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 393 &rotator_driver, 394 #endif 395 #ifdef CONFIG_DRM_EXYNOS_GSC 396 &gsc_driver, 397 #endif 398 #ifdef CONFIG_DRM_EXYNOS_IPP 399 &ipp_driver, 400 #endif 401 &exynos_drm_platform_driver, 402 }; 403 404 static struct platform_driver *const exynos_drm_drv_with_simple_dev[] = { 405 #ifdef CONFIG_DRM_EXYNOS_VIDI 406 &vidi_driver, 407 #endif 408 #ifdef CONFIG_DRM_EXYNOS_IPP 409 &ipp_driver, 410 #endif 411 &exynos_drm_platform_driver, 412 }; 413 #define PDEV_COUNT ARRAY_SIZE(exynos_drm_drv_with_simple_dev) 414 415 static int compare_dev(struct device *dev, void *data) 416 { 417 return dev == (struct device *)data; 418 } 419 420 static struct component_match *exynos_drm_match_add(struct device *dev) 421 { 422 struct component_match *match = NULL; 423 int i; 424 425 for (i = 0; i < ARRAY_SIZE(exynos_drm_kms_drivers); ++i) { 426 struct device_driver *drv = &exynos_drm_kms_drivers[i]->driver; 427 struct device *p = NULL, *d; 428 429 while ((d = bus_find_device(&platform_bus_type, p, drv, 430 (void *)platform_bus_type.match))) { 431 put_device(p); 432 component_match_add(dev, &match, compare_dev, d); 433 p = d; 434 } 435 put_device(p); 436 } 437 438 return match ?: ERR_PTR(-ENODEV); 439 } 440 441 static int exynos_drm_bind(struct device *dev) 442 { 443 return drm_platform_init(&exynos_drm_driver, to_platform_device(dev)); 444 } 445 446 static void exynos_drm_unbind(struct device *dev) 447 { 448 drm_put_dev(dev_get_drvdata(dev)); 449 } 450 451 static const struct component_master_ops exynos_drm_ops = { 452 .bind = exynos_drm_bind, 453 .unbind = exynos_drm_unbind, 454 }; 455 456 static int exynos_drm_platform_probe(struct platform_device *pdev) 457 { 458 struct component_match *match; 459 460 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); 461 exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls); 462 463 match = exynos_drm_match_add(&pdev->dev); 464 if (IS_ERR(match)) 465 return PTR_ERR(match); 466 467 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops, 468 match); 469 } 470 471 static int exynos_drm_platform_remove(struct platform_device *pdev) 472 { 473 component_master_del(&pdev->dev, &exynos_drm_ops); 474 return 0; 475 } 476 477 static struct platform_driver exynos_drm_platform_driver = { 478 .probe = exynos_drm_platform_probe, 479 .remove = exynos_drm_platform_remove, 480 .driver = { 481 .name = "exynos-drm", 482 .pm = &exynos_drm_pm_ops, 483 }, 484 }; 485 486 static struct platform_device *exynos_drm_pdevs[PDEV_COUNT]; 487 488 static void exynos_drm_unregister_devices(void) 489 { 490 int i = PDEV_COUNT; 491 492 while (--i >= 0) { 493 platform_device_unregister(exynos_drm_pdevs[i]); 494 exynos_drm_pdevs[i] = NULL; 495 } 496 } 497 498 static int exynos_drm_register_devices(void) 499 { 500 int i; 501 502 for (i = 0; i < PDEV_COUNT; ++i) { 503 struct platform_driver *d = exynos_drm_drv_with_simple_dev[i]; 504 struct platform_device *pdev = 505 platform_device_register_simple(d->driver.name, -1, 506 NULL, 0); 507 508 if (!IS_ERR(pdev)) { 509 exynos_drm_pdevs[i] = pdev; 510 continue; 511 } 512 while (--i >= 0) { 513 platform_device_unregister(exynos_drm_pdevs[i]); 514 exynos_drm_pdevs[i] = NULL; 515 } 516 517 return PTR_ERR(pdev); 518 } 519 520 return 0; 521 } 522 523 static void exynos_drm_unregister_drivers(struct platform_driver * const *drv, 524 int count) 525 { 526 while (--count >= 0) 527 platform_driver_unregister(drv[count]); 528 } 529 530 static int exynos_drm_register_drivers(struct platform_driver * const *drv, 531 int count) 532 { 533 int i, ret; 534 535 for (i = 0; i < count; ++i) { 536 ret = platform_driver_register(drv[i]); 537 if (!ret) 538 continue; 539 540 while (--i >= 0) 541 platform_driver_unregister(drv[i]); 542 543 return ret; 544 } 545 546 return 0; 547 } 548 549 static inline int exynos_drm_register_kms_drivers(void) 550 { 551 return exynos_drm_register_drivers(exynos_drm_kms_drivers, 552 ARRAY_SIZE(exynos_drm_kms_drivers)); 553 } 554 555 static inline int exynos_drm_register_non_kms_drivers(void) 556 { 557 return exynos_drm_register_drivers(exynos_drm_non_kms_drivers, 558 ARRAY_SIZE(exynos_drm_non_kms_drivers)); 559 } 560 561 static inline void exynos_drm_unregister_kms_drivers(void) 562 { 563 exynos_drm_unregister_drivers(exynos_drm_kms_drivers, 564 ARRAY_SIZE(exynos_drm_kms_drivers)); 565 } 566 567 static inline void exynos_drm_unregister_non_kms_drivers(void) 568 { 569 exynos_drm_unregister_drivers(exynos_drm_non_kms_drivers, 570 ARRAY_SIZE(exynos_drm_non_kms_drivers)); 571 } 572 573 static int exynos_drm_init(void) 574 { 575 int ret; 576 577 ret = exynos_drm_register_devices(); 578 if (ret) 579 return ret; 580 581 ret = exynos_drm_register_kms_drivers(); 582 if (ret) 583 goto err_unregister_pdevs; 584 585 ret = exynos_drm_register_non_kms_drivers(); 586 if (ret) 587 goto err_unregister_kms_drivers; 588 589 return 0; 590 591 err_unregister_kms_drivers: 592 exynos_drm_unregister_kms_drivers(); 593 594 err_unregister_pdevs: 595 exynos_drm_unregister_devices(); 596 597 return ret; 598 } 599 600 static void exynos_drm_exit(void) 601 { 602 exynos_drm_unregister_non_kms_drivers(); 603 exynos_drm_unregister_kms_drivers(); 604 exynos_drm_unregister_devices(); 605 } 606 607 module_init(exynos_drm_init); 608 module_exit(exynos_drm_exit); 609 610 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 611 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 612 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 613 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 614 MODULE_LICENSE("GPL"); 615