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