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 kfree(file_priv); 176 file->driver_priv = NULL; 177 } 178 179 anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops, 180 NULL, 0); 181 if (IS_ERR(anon_filp)) { 182 kfree(file_priv); 183 return PTR_ERR(anon_filp); 184 } 185 186 anon_filp->f_mode = FMODE_READ | FMODE_WRITE; 187 file_priv->anon_filp = anon_filp; 188 189 return ret; 190 } 191 192 static void exynos_drm_preclose(struct drm_device *dev, 193 struct drm_file *file) 194 { 195 exynos_drm_subdrv_close(dev, file); 196 } 197 198 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) 199 { 200 struct exynos_drm_private *private = dev->dev_private; 201 struct drm_exynos_file_private *file_priv; 202 struct drm_pending_vblank_event *v, *vt; 203 struct drm_pending_event *e, *et; 204 unsigned long flags; 205 206 if (!file->driver_priv) 207 return; 208 209 /* Release all events not unhandled by page flip handler. */ 210 spin_lock_irqsave(&dev->event_lock, flags); 211 list_for_each_entry_safe(v, vt, &private->pageflip_event_list, 212 base.link) { 213 if (v->base.file_priv == file) { 214 list_del(&v->base.link); 215 drm_vblank_put(dev, v->pipe); 216 v->base.destroy(&v->base); 217 } 218 } 219 220 /* Release all events handled by page flip handler but not freed. */ 221 list_for_each_entry_safe(e, et, &file->event_list, link) { 222 list_del(&e->link); 223 e->destroy(e); 224 } 225 spin_unlock_irqrestore(&dev->event_lock, flags); 226 227 file_priv = file->driver_priv; 228 if (file_priv->anon_filp) 229 fput(file_priv->anon_filp); 230 231 kfree(file->driver_priv); 232 file->driver_priv = NULL; 233 } 234 235 static void exynos_drm_lastclose(struct drm_device *dev) 236 { 237 exynos_drm_fbdev_restore_mode(dev); 238 } 239 240 static const struct vm_operations_struct exynos_drm_gem_vm_ops = { 241 .fault = exynos_drm_gem_fault, 242 .open = drm_gem_vm_open, 243 .close = drm_gem_vm_close, 244 }; 245 246 static const struct drm_ioctl_desc exynos_ioctls[] = { 247 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 248 DRM_UNLOCKED | DRM_AUTH), 249 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET, 250 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED | 251 DRM_AUTH), 252 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP, 253 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH), 254 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, 255 exynos_drm_gem_get_ioctl, DRM_UNLOCKED), 256 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, 257 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), 258 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, 259 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), 260 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, 261 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), 262 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, 263 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), 264 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, 265 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH), 266 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, 267 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH), 268 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, 269 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH), 270 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, 271 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH), 272 }; 273 274 static const struct file_operations exynos_drm_driver_fops = { 275 .owner = THIS_MODULE, 276 .open = drm_open, 277 .mmap = exynos_drm_gem_mmap, 278 .poll = drm_poll, 279 .read = drm_read, 280 .unlocked_ioctl = drm_ioctl, 281 #ifdef CONFIG_COMPAT 282 .compat_ioctl = drm_compat_ioctl, 283 #endif 284 .release = drm_release, 285 }; 286 287 static struct drm_driver exynos_drm_driver = { 288 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET | 289 DRIVER_GEM | DRIVER_PRIME, 290 .load = exynos_drm_load, 291 .unload = exynos_drm_unload, 292 .open = exynos_drm_open, 293 .preclose = exynos_drm_preclose, 294 .lastclose = exynos_drm_lastclose, 295 .postclose = exynos_drm_postclose, 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 = exynos_dmabuf_prime_export, 307 .gem_prime_import = exynos_dmabuf_prime_import, 308 .ioctls = exynos_ioctls, 309 .num_ioctls = ARRAY_SIZE(exynos_ioctls), 310 .fops = &exynos_drm_driver_fops, 311 .name = DRIVER_NAME, 312 .desc = DRIVER_DESC, 313 .date = DRIVER_DATE, 314 .major = DRIVER_MAJOR, 315 .minor = DRIVER_MINOR, 316 }; 317 318 static int exynos_drm_platform_probe(struct platform_device *pdev) 319 { 320 int ret; 321 322 ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 323 if (ret) 324 return ret; 325 326 return drm_platform_init(&exynos_drm_driver, pdev); 327 } 328 329 static int exynos_drm_platform_remove(struct platform_device *pdev) 330 { 331 drm_put_dev(platform_get_drvdata(pdev)); 332 333 return 0; 334 } 335 336 static struct platform_driver exynos_drm_platform_driver = { 337 .probe = exynos_drm_platform_probe, 338 .remove = exynos_drm_platform_remove, 339 .driver = { 340 .owner = THIS_MODULE, 341 .name = "exynos-drm", 342 }, 343 }; 344 345 static int __init exynos_drm_init(void) 346 { 347 int ret; 348 349 #ifdef CONFIG_DRM_EXYNOS_FIMD 350 ret = platform_driver_register(&fimd_driver); 351 if (ret < 0) 352 goto out_fimd; 353 #endif 354 355 #ifdef CONFIG_DRM_EXYNOS_HDMI 356 ret = platform_driver_register(&hdmi_driver); 357 if (ret < 0) 358 goto out_hdmi; 359 ret = platform_driver_register(&mixer_driver); 360 if (ret < 0) 361 goto out_mixer; 362 ret = platform_driver_register(&exynos_drm_common_hdmi_driver); 363 if (ret < 0) 364 goto out_common_hdmi; 365 366 ret = exynos_platform_device_hdmi_register(); 367 if (ret < 0) 368 goto out_common_hdmi_dev; 369 #endif 370 371 #ifdef CONFIG_DRM_EXYNOS_VIDI 372 ret = platform_driver_register(&vidi_driver); 373 if (ret < 0) 374 goto out_vidi; 375 #endif 376 377 #ifdef CONFIG_DRM_EXYNOS_G2D 378 ret = platform_driver_register(&g2d_driver); 379 if (ret < 0) 380 goto out_g2d; 381 #endif 382 383 #ifdef CONFIG_DRM_EXYNOS_FIMC 384 ret = platform_driver_register(&fimc_driver); 385 if (ret < 0) 386 goto out_fimc; 387 #endif 388 389 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 390 ret = platform_driver_register(&rotator_driver); 391 if (ret < 0) 392 goto out_rotator; 393 #endif 394 395 #ifdef CONFIG_DRM_EXYNOS_GSC 396 ret = platform_driver_register(&gsc_driver); 397 if (ret < 0) 398 goto out_gsc; 399 #endif 400 401 #ifdef CONFIG_DRM_EXYNOS_IPP 402 ret = platform_driver_register(&ipp_driver); 403 if (ret < 0) 404 goto out_ipp; 405 406 ret = exynos_platform_device_ipp_register(); 407 if (ret < 0) 408 goto out_ipp_dev; 409 #endif 410 411 ret = platform_driver_register(&exynos_drm_platform_driver); 412 if (ret < 0) 413 goto out_drm; 414 415 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, 416 NULL, 0); 417 if (IS_ERR(exynos_drm_pdev)) { 418 ret = PTR_ERR(exynos_drm_pdev); 419 goto out; 420 } 421 422 return 0; 423 424 out: 425 platform_driver_unregister(&exynos_drm_platform_driver); 426 427 out_drm: 428 #ifdef CONFIG_DRM_EXYNOS_IPP 429 exynos_platform_device_ipp_unregister(); 430 out_ipp_dev: 431 platform_driver_unregister(&ipp_driver); 432 out_ipp: 433 #endif 434 435 #ifdef CONFIG_DRM_EXYNOS_GSC 436 platform_driver_unregister(&gsc_driver); 437 out_gsc: 438 #endif 439 440 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 441 platform_driver_unregister(&rotator_driver); 442 out_rotator: 443 #endif 444 445 #ifdef CONFIG_DRM_EXYNOS_FIMC 446 platform_driver_unregister(&fimc_driver); 447 out_fimc: 448 #endif 449 450 #ifdef CONFIG_DRM_EXYNOS_G2D 451 platform_driver_unregister(&g2d_driver); 452 out_g2d: 453 #endif 454 455 #ifdef CONFIG_DRM_EXYNOS_VIDI 456 platform_driver_unregister(&vidi_driver); 457 out_vidi: 458 #endif 459 460 #ifdef CONFIG_DRM_EXYNOS_HDMI 461 exynos_platform_device_hdmi_unregister(); 462 out_common_hdmi_dev: 463 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 464 out_common_hdmi: 465 platform_driver_unregister(&mixer_driver); 466 out_mixer: 467 platform_driver_unregister(&hdmi_driver); 468 out_hdmi: 469 #endif 470 471 #ifdef CONFIG_DRM_EXYNOS_FIMD 472 platform_driver_unregister(&fimd_driver); 473 out_fimd: 474 #endif 475 return ret; 476 } 477 478 static void __exit exynos_drm_exit(void) 479 { 480 platform_device_unregister(exynos_drm_pdev); 481 482 platform_driver_unregister(&exynos_drm_platform_driver); 483 484 #ifdef CONFIG_DRM_EXYNOS_IPP 485 exynos_platform_device_ipp_unregister(); 486 platform_driver_unregister(&ipp_driver); 487 #endif 488 489 #ifdef CONFIG_DRM_EXYNOS_GSC 490 platform_driver_unregister(&gsc_driver); 491 #endif 492 493 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 494 platform_driver_unregister(&rotator_driver); 495 #endif 496 497 #ifdef CONFIG_DRM_EXYNOS_FIMC 498 platform_driver_unregister(&fimc_driver); 499 #endif 500 501 #ifdef CONFIG_DRM_EXYNOS_G2D 502 platform_driver_unregister(&g2d_driver); 503 #endif 504 505 #ifdef CONFIG_DRM_EXYNOS_HDMI 506 exynos_platform_device_hdmi_unregister(); 507 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 508 platform_driver_unregister(&mixer_driver); 509 platform_driver_unregister(&hdmi_driver); 510 #endif 511 512 #ifdef CONFIG_DRM_EXYNOS_VIDI 513 platform_driver_unregister(&vidi_driver); 514 #endif 515 516 #ifdef CONFIG_DRM_EXYNOS_FIMD 517 platform_driver_unregister(&fimd_driver); 518 #endif 519 } 520 521 module_init(exynos_drm_init); 522 module_exit(exynos_drm_exit); 523 524 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 525 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 526 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 527 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 528 MODULE_LICENSE("GPL"); 529