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 <drm/drmP.h> 15 #include <drm/drm_crtc_helper.h> 16 17 #include <linux/anon_inodes.h> 18 19 #include <drm/exynos_drm.h> 20 21 #include "exynos_drm_drv.h" 22 #include "exynos_drm_crtc.h" 23 #include "exynos_drm_encoder.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_dmabuf.h" 30 #include "exynos_drm_g2d.h" 31 #include "exynos_drm_ipp.h" 32 #include "exynos_drm_iommu.h" 33 34 #define DRIVER_NAME "exynos" 35 #define DRIVER_DESC "Samsung SoC DRM" 36 #define DRIVER_DATE "20110530" 37 #define DRIVER_MAJOR 1 38 #define DRIVER_MINOR 0 39 40 #define VBLANK_OFF_DELAY 50000 41 42 /* platform device pointer for eynos drm device. */ 43 static struct platform_device *exynos_drm_pdev; 44 45 static int exynos_drm_load(struct drm_device *dev, unsigned long flags) 46 { 47 struct exynos_drm_private *private; 48 int ret; 49 int nr; 50 51 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); 52 if (!private) 53 return -ENOMEM; 54 55 INIT_LIST_HEAD(&private->pageflip_event_list); 56 dev->dev_private = (void *)private; 57 58 /* 59 * create mapping to manage iommu table and set a pointer to iommu 60 * mapping structure to iommu_mapping of private data. 61 * also this iommu_mapping can be used to check if iommu is supported 62 * or not. 63 */ 64 ret = drm_create_iommu_mapping(dev); 65 if (ret < 0) { 66 DRM_ERROR("failed to create iommu mapping.\n"); 67 goto err_crtc; 68 } 69 70 drm_mode_config_init(dev); 71 72 /* init kms poll for handling hpd */ 73 drm_kms_helper_poll_init(dev); 74 75 exynos_drm_mode_config_init(dev); 76 77 /* 78 * EXYNOS4 is enough to have two CRTCs and each crtc would be used 79 * without dependency of hardware. 80 */ 81 for (nr = 0; nr < MAX_CRTC; nr++) { 82 ret = exynos_drm_crtc_create(dev, nr); 83 if (ret) 84 goto err_release_iommu_mapping; 85 } 86 87 for (nr = 0; nr < MAX_PLANE; nr++) { 88 struct drm_plane *plane; 89 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1; 90 91 plane = exynos_plane_init(dev, possible_crtcs, false); 92 if (!plane) 93 goto err_release_iommu_mapping; 94 } 95 96 ret = drm_vblank_init(dev, MAX_CRTC); 97 if (ret) 98 goto err_release_iommu_mapping; 99 100 /* 101 * probe sub drivers such as display controller and hdmi driver, 102 * that were registered at probe() of platform driver 103 * to the sub driver and create encoder and connector for them. 104 */ 105 ret = exynos_drm_device_register(dev); 106 if (ret) 107 goto err_vblank; 108 109 /* setup possible_clones. */ 110 exynos_drm_encoder_setup(dev); 111 112 /* 113 * create and configure fb helper and also exynos specific 114 * fbdev object. 115 */ 116 ret = exynos_drm_fbdev_init(dev); 117 if (ret) { 118 DRM_ERROR("failed to initialize drm fbdev\n"); 119 goto err_drm_device; 120 } 121 122 drm_vblank_offdelay = VBLANK_OFF_DELAY; 123 124 platform_set_drvdata(dev->platformdev, dev); 125 126 return 0; 127 128 err_drm_device: 129 exynos_drm_device_unregister(dev); 130 err_vblank: 131 drm_vblank_cleanup(dev); 132 err_release_iommu_mapping: 133 drm_release_iommu_mapping(dev); 134 err_crtc: 135 drm_mode_config_cleanup(dev); 136 kfree(private); 137 138 return ret; 139 } 140 141 static int exynos_drm_unload(struct drm_device *dev) 142 { 143 exynos_drm_fbdev_fini(dev); 144 exynos_drm_device_unregister(dev); 145 drm_vblank_cleanup(dev); 146 drm_kms_helper_poll_fini(dev); 147 drm_mode_config_cleanup(dev); 148 149 drm_release_iommu_mapping(dev); 150 kfree(dev->dev_private); 151 152 dev->dev_private = NULL; 153 154 return 0; 155 } 156 157 static const struct file_operations exynos_drm_gem_fops = { 158 .mmap = exynos_drm_gem_mmap_buffer, 159 }; 160 161 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) 162 { 163 struct drm_exynos_file_private *file_priv; 164 struct file *anon_filp; 165 int ret; 166 167 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); 168 if (!file_priv) 169 return -ENOMEM; 170 171 file->driver_priv = file_priv; 172 173 ret = exynos_drm_subdrv_open(dev, file); 174 if (ret) 175 goto out; 176 177 anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops, 178 NULL, 0); 179 if (IS_ERR(anon_filp)) { 180 ret = PTR_ERR(anon_filp); 181 goto out; 182 } 183 184 anon_filp->f_mode = FMODE_READ | FMODE_WRITE; 185 file_priv->anon_filp = anon_filp; 186 187 return ret; 188 out: 189 kfree(file_priv); 190 file->driver_priv = NULL; 191 return ret; 192 } 193 194 static void exynos_drm_preclose(struct drm_device *dev, 195 struct drm_file *file) 196 { 197 exynos_drm_subdrv_close(dev, file); 198 } 199 200 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) 201 { 202 struct exynos_drm_private *private = dev->dev_private; 203 struct drm_exynos_file_private *file_priv; 204 struct drm_pending_vblank_event *v, *vt; 205 struct drm_pending_event *e, *et; 206 unsigned long flags; 207 208 if (!file->driver_priv) 209 return; 210 211 /* Release all events not unhandled by page flip handler. */ 212 spin_lock_irqsave(&dev->event_lock, flags); 213 list_for_each_entry_safe(v, vt, &private->pageflip_event_list, 214 base.link) { 215 if (v->base.file_priv == file) { 216 list_del(&v->base.link); 217 drm_vblank_put(dev, v->pipe); 218 v->base.destroy(&v->base); 219 } 220 } 221 222 /* Release all events handled by page flip handler but not freed. */ 223 list_for_each_entry_safe(e, et, &file->event_list, link) { 224 list_del(&e->link); 225 e->destroy(e); 226 } 227 spin_unlock_irqrestore(&dev->event_lock, flags); 228 229 file_priv = file->driver_priv; 230 if (file_priv->anon_filp) 231 fput(file_priv->anon_filp); 232 233 kfree(file->driver_priv); 234 file->driver_priv = NULL; 235 } 236 237 static void exynos_drm_lastclose(struct drm_device *dev) 238 { 239 exynos_drm_fbdev_restore_mode(dev); 240 } 241 242 static const struct vm_operations_struct exynos_drm_gem_vm_ops = { 243 .fault = exynos_drm_gem_fault, 244 .open = drm_gem_vm_open, 245 .close = drm_gem_vm_close, 246 }; 247 248 static const struct drm_ioctl_desc exynos_ioctls[] = { 249 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 250 DRM_UNLOCKED | DRM_AUTH), 251 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET, 252 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED | 253 DRM_AUTH), 254 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP, 255 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH), 256 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, 257 exynos_drm_gem_get_ioctl, DRM_UNLOCKED), 258 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, 259 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), 260 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, 261 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), 262 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, 263 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), 264 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, 265 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), 266 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, 267 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH), 268 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, 269 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH), 270 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, 271 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH), 272 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, 273 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH), 274 }; 275 276 static const struct file_operations exynos_drm_driver_fops = { 277 .owner = THIS_MODULE, 278 .open = drm_open, 279 .mmap = exynos_drm_gem_mmap, 280 .poll = drm_poll, 281 .read = drm_read, 282 .unlocked_ioctl = drm_ioctl, 283 #ifdef CONFIG_COMPAT 284 .compat_ioctl = drm_compat_ioctl, 285 #endif 286 .release = drm_release, 287 }; 288 289 static struct drm_driver exynos_drm_driver = { 290 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET | 291 DRIVER_GEM | DRIVER_PRIME, 292 .load = exynos_drm_load, 293 .unload = exynos_drm_unload, 294 .open = exynos_drm_open, 295 .preclose = exynos_drm_preclose, 296 .lastclose = exynos_drm_lastclose, 297 .postclose = exynos_drm_postclose, 298 .get_vblank_counter = drm_vblank_count, 299 .enable_vblank = exynos_drm_crtc_enable_vblank, 300 .disable_vblank = exynos_drm_crtc_disable_vblank, 301 .gem_free_object = exynos_drm_gem_free_object, 302 .gem_vm_ops = &exynos_drm_gem_vm_ops, 303 .dumb_create = exynos_drm_gem_dumb_create, 304 .dumb_map_offset = exynos_drm_gem_dumb_map_offset, 305 .dumb_destroy = drm_gem_dumb_destroy, 306 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 307 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 308 .gem_prime_export = exynos_dmabuf_prime_export, 309 .gem_prime_import = exynos_dmabuf_prime_import, 310 .ioctls = exynos_ioctls, 311 .num_ioctls = ARRAY_SIZE(exynos_ioctls), 312 .fops = &exynos_drm_driver_fops, 313 .name = DRIVER_NAME, 314 .desc = DRIVER_DESC, 315 .date = DRIVER_DATE, 316 .major = DRIVER_MAJOR, 317 .minor = DRIVER_MINOR, 318 }; 319 320 static int exynos_drm_platform_probe(struct platform_device *pdev) 321 { 322 int ret; 323 324 ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 325 if (ret) 326 return ret; 327 328 return drm_platform_init(&exynos_drm_driver, pdev); 329 } 330 331 static int exynos_drm_platform_remove(struct platform_device *pdev) 332 { 333 drm_put_dev(platform_get_drvdata(pdev)); 334 335 return 0; 336 } 337 338 static struct platform_driver exynos_drm_platform_driver = { 339 .probe = exynos_drm_platform_probe, 340 .remove = exynos_drm_platform_remove, 341 .driver = { 342 .owner = THIS_MODULE, 343 .name = "exynos-drm", 344 }, 345 }; 346 347 static int __init exynos_drm_init(void) 348 { 349 int ret; 350 351 #ifdef CONFIG_DRM_EXYNOS_FIMD 352 ret = platform_driver_register(&fimd_driver); 353 if (ret < 0) 354 goto out_fimd; 355 #endif 356 357 #ifdef CONFIG_DRM_EXYNOS_HDMI 358 ret = platform_driver_register(&hdmi_driver); 359 if (ret < 0) 360 goto out_hdmi; 361 ret = platform_driver_register(&mixer_driver); 362 if (ret < 0) 363 goto out_mixer; 364 ret = platform_driver_register(&exynos_drm_common_hdmi_driver); 365 if (ret < 0) 366 goto out_common_hdmi; 367 368 ret = exynos_platform_device_hdmi_register(); 369 if (ret < 0) 370 goto out_common_hdmi_dev; 371 #endif 372 373 #ifdef CONFIG_DRM_EXYNOS_VIDI 374 ret = platform_driver_register(&vidi_driver); 375 if (ret < 0) 376 goto out_vidi; 377 #endif 378 379 #ifdef CONFIG_DRM_EXYNOS_G2D 380 ret = platform_driver_register(&g2d_driver); 381 if (ret < 0) 382 goto out_g2d; 383 #endif 384 385 #ifdef CONFIG_DRM_EXYNOS_FIMC 386 ret = platform_driver_register(&fimc_driver); 387 if (ret < 0) 388 goto out_fimc; 389 #endif 390 391 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 392 ret = platform_driver_register(&rotator_driver); 393 if (ret < 0) 394 goto out_rotator; 395 #endif 396 397 #ifdef CONFIG_DRM_EXYNOS_GSC 398 ret = platform_driver_register(&gsc_driver); 399 if (ret < 0) 400 goto out_gsc; 401 #endif 402 403 #ifdef CONFIG_DRM_EXYNOS_IPP 404 ret = platform_driver_register(&ipp_driver); 405 if (ret < 0) 406 goto out_ipp; 407 408 ret = exynos_platform_device_ipp_register(); 409 if (ret < 0) 410 goto out_ipp_dev; 411 #endif 412 413 ret = platform_driver_register(&exynos_drm_platform_driver); 414 if (ret < 0) 415 goto out_drm; 416 417 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, 418 NULL, 0); 419 if (IS_ERR(exynos_drm_pdev)) { 420 ret = PTR_ERR(exynos_drm_pdev); 421 goto out; 422 } 423 424 return 0; 425 426 out: 427 platform_driver_unregister(&exynos_drm_platform_driver); 428 429 out_drm: 430 #ifdef CONFIG_DRM_EXYNOS_IPP 431 exynos_platform_device_ipp_unregister(); 432 out_ipp_dev: 433 platform_driver_unregister(&ipp_driver); 434 out_ipp: 435 #endif 436 437 #ifdef CONFIG_DRM_EXYNOS_GSC 438 platform_driver_unregister(&gsc_driver); 439 out_gsc: 440 #endif 441 442 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 443 platform_driver_unregister(&rotator_driver); 444 out_rotator: 445 #endif 446 447 #ifdef CONFIG_DRM_EXYNOS_FIMC 448 platform_driver_unregister(&fimc_driver); 449 out_fimc: 450 #endif 451 452 #ifdef CONFIG_DRM_EXYNOS_G2D 453 platform_driver_unregister(&g2d_driver); 454 out_g2d: 455 #endif 456 457 #ifdef CONFIG_DRM_EXYNOS_VIDI 458 platform_driver_unregister(&vidi_driver); 459 out_vidi: 460 #endif 461 462 #ifdef CONFIG_DRM_EXYNOS_HDMI 463 exynos_platform_device_hdmi_unregister(); 464 out_common_hdmi_dev: 465 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 466 out_common_hdmi: 467 platform_driver_unregister(&mixer_driver); 468 out_mixer: 469 platform_driver_unregister(&hdmi_driver); 470 out_hdmi: 471 #endif 472 473 #ifdef CONFIG_DRM_EXYNOS_FIMD 474 platform_driver_unregister(&fimd_driver); 475 out_fimd: 476 #endif 477 return ret; 478 } 479 480 static void __exit exynos_drm_exit(void) 481 { 482 platform_device_unregister(exynos_drm_pdev); 483 484 platform_driver_unregister(&exynos_drm_platform_driver); 485 486 #ifdef CONFIG_DRM_EXYNOS_IPP 487 exynos_platform_device_ipp_unregister(); 488 platform_driver_unregister(&ipp_driver); 489 #endif 490 491 #ifdef CONFIG_DRM_EXYNOS_GSC 492 platform_driver_unregister(&gsc_driver); 493 #endif 494 495 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 496 platform_driver_unregister(&rotator_driver); 497 #endif 498 499 #ifdef CONFIG_DRM_EXYNOS_FIMC 500 platform_driver_unregister(&fimc_driver); 501 #endif 502 503 #ifdef CONFIG_DRM_EXYNOS_G2D 504 platform_driver_unregister(&g2d_driver); 505 #endif 506 507 #ifdef CONFIG_DRM_EXYNOS_HDMI 508 exynos_platform_device_hdmi_unregister(); 509 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 510 platform_driver_unregister(&mixer_driver); 511 platform_driver_unregister(&hdmi_driver); 512 #endif 513 514 #ifdef CONFIG_DRM_EXYNOS_VIDI 515 platform_driver_unregister(&vidi_driver); 516 #endif 517 518 #ifdef CONFIG_DRM_EXYNOS_FIMD 519 platform_driver_unregister(&fimd_driver); 520 #endif 521 } 522 523 module_init(exynos_drm_init); 524 module_exit(exynos_drm_exit); 525 526 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 527 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 528 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 529 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 530 MODULE_LICENSE("GPL"); 531