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 <drm/exynos_drm.h> 18 19 #include "exynos_drm_drv.h" 20 #include "exynos_drm_crtc.h" 21 #include "exynos_drm_encoder.h" 22 #include "exynos_drm_fbdev.h" 23 #include "exynos_drm_fb.h" 24 #include "exynos_drm_gem.h" 25 #include "exynos_drm_plane.h" 26 #include "exynos_drm_vidi.h" 27 #include "exynos_drm_dmabuf.h" 28 #include "exynos_drm_g2d.h" 29 #include "exynos_drm_ipp.h" 30 #include "exynos_drm_iommu.h" 31 32 #define DRIVER_NAME "exynos" 33 #define DRIVER_DESC "Samsung SoC DRM" 34 #define DRIVER_DATE "20110530" 35 #define DRIVER_MAJOR 1 36 #define DRIVER_MINOR 0 37 38 #define VBLANK_OFF_DELAY 50000 39 40 /* platform device pointer for eynos drm device. */ 41 static struct platform_device *exynos_drm_pdev; 42 43 static int exynos_drm_load(struct drm_device *dev, unsigned long flags) 44 { 45 struct exynos_drm_private *private; 46 int ret; 47 int nr; 48 49 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); 50 if (!private) 51 return -ENOMEM; 52 53 INIT_LIST_HEAD(&private->pageflip_event_list); 54 dev->dev_private = (void *)private; 55 56 /* 57 * create mapping to manage iommu table and set a pointer to iommu 58 * mapping structure to iommu_mapping of private data. 59 * also this iommu_mapping can be used to check if iommu is supported 60 * or not. 61 */ 62 ret = drm_create_iommu_mapping(dev); 63 if (ret < 0) { 64 DRM_ERROR("failed to create iommu mapping.\n"); 65 goto err_crtc; 66 } 67 68 drm_mode_config_init(dev); 69 70 /* init kms poll for handling hpd */ 71 drm_kms_helper_poll_init(dev); 72 73 exynos_drm_mode_config_init(dev); 74 75 /* 76 * EXYNOS4 is enough to have two CRTCs and each crtc would be used 77 * without dependency of hardware. 78 */ 79 for (nr = 0; nr < MAX_CRTC; nr++) { 80 ret = exynos_drm_crtc_create(dev, nr); 81 if (ret) 82 goto err_release_iommu_mapping; 83 } 84 85 for (nr = 0; nr < MAX_PLANE; nr++) { 86 struct drm_plane *plane; 87 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1; 88 89 plane = exynos_plane_init(dev, possible_crtcs, false); 90 if (!plane) 91 goto err_release_iommu_mapping; 92 } 93 94 ret = drm_vblank_init(dev, MAX_CRTC); 95 if (ret) 96 goto err_release_iommu_mapping; 97 98 /* 99 * probe sub drivers such as display controller and hdmi driver, 100 * that were registered at probe() of platform driver 101 * to the sub driver and create encoder and connector for them. 102 */ 103 ret = exynos_drm_device_register(dev); 104 if (ret) 105 goto err_vblank; 106 107 /* setup possible_clones. */ 108 exynos_drm_encoder_setup(dev); 109 110 /* 111 * create and configure fb helper and also exynos specific 112 * fbdev object. 113 */ 114 ret = exynos_drm_fbdev_init(dev); 115 if (ret) { 116 DRM_ERROR("failed to initialize drm fbdev\n"); 117 goto err_drm_device; 118 } 119 120 drm_vblank_offdelay = VBLANK_OFF_DELAY; 121 122 return 0; 123 124 err_drm_device: 125 exynos_drm_device_unregister(dev); 126 err_vblank: 127 drm_vblank_cleanup(dev); 128 err_release_iommu_mapping: 129 drm_release_iommu_mapping(dev); 130 err_crtc: 131 drm_mode_config_cleanup(dev); 132 kfree(private); 133 134 return ret; 135 } 136 137 static int exynos_drm_unload(struct drm_device *dev) 138 { 139 exynos_drm_fbdev_fini(dev); 140 exynos_drm_device_unregister(dev); 141 drm_vblank_cleanup(dev); 142 drm_kms_helper_poll_fini(dev); 143 drm_mode_config_cleanup(dev); 144 145 drm_release_iommu_mapping(dev); 146 kfree(dev->dev_private); 147 148 dev->dev_private = NULL; 149 150 return 0; 151 } 152 153 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) 154 { 155 struct drm_exynos_file_private *file_priv; 156 int ret; 157 158 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); 159 if (!file_priv) 160 return -ENOMEM; 161 162 file->driver_priv = file_priv; 163 164 ret = exynos_drm_subdrv_open(dev, file); 165 if (ret) { 166 kfree(file_priv); 167 file->driver_priv = NULL; 168 } 169 170 return ret; 171 } 172 173 static void exynos_drm_preclose(struct drm_device *dev, 174 struct drm_file *file) 175 { 176 exynos_drm_subdrv_close(dev, file); 177 } 178 179 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) 180 { 181 struct exynos_drm_private *private = dev->dev_private; 182 struct drm_pending_vblank_event *v, *vt; 183 struct drm_pending_event *e, *et; 184 unsigned long flags; 185 186 if (!file->driver_priv) 187 return; 188 189 /* Release all events not unhandled by page flip handler. */ 190 spin_lock_irqsave(&dev->event_lock, flags); 191 list_for_each_entry_safe(v, vt, &private->pageflip_event_list, 192 base.link) { 193 if (v->base.file_priv == file) { 194 list_del(&v->base.link); 195 drm_vblank_put(dev, v->pipe); 196 v->base.destroy(&v->base); 197 } 198 } 199 200 /* Release all events handled by page flip handler but not freed. */ 201 list_for_each_entry_safe(e, et, &file->event_list, link) { 202 list_del(&e->link); 203 e->destroy(e); 204 } 205 spin_unlock_irqrestore(&dev->event_lock, flags); 206 207 208 kfree(file->driver_priv); 209 file->driver_priv = NULL; 210 } 211 212 static void exynos_drm_lastclose(struct drm_device *dev) 213 { 214 exynos_drm_fbdev_restore_mode(dev); 215 } 216 217 static const struct vm_operations_struct exynos_drm_gem_vm_ops = { 218 .fault = exynos_drm_gem_fault, 219 .open = drm_gem_vm_open, 220 .close = drm_gem_vm_close, 221 }; 222 223 static const struct drm_ioctl_desc exynos_ioctls[] = { 224 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 225 DRM_UNLOCKED | DRM_AUTH), 226 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET, 227 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED | 228 DRM_AUTH), 229 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP, 230 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH), 231 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, 232 exynos_drm_gem_get_ioctl, DRM_UNLOCKED), 233 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, 234 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), 235 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, 236 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), 237 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, 238 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), 239 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, 240 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), 241 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, 242 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH), 243 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, 244 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH), 245 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, 246 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH), 247 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, 248 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH), 249 }; 250 251 static const struct file_operations exynos_drm_driver_fops = { 252 .owner = THIS_MODULE, 253 .open = drm_open, 254 .mmap = exynos_drm_gem_mmap, 255 .poll = drm_poll, 256 .read = drm_read, 257 .unlocked_ioctl = drm_ioctl, 258 #ifdef CONFIG_COMPAT 259 .compat_ioctl = drm_compat_ioctl, 260 #endif 261 .release = drm_release, 262 }; 263 264 static struct drm_driver exynos_drm_driver = { 265 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET | 266 DRIVER_GEM | DRIVER_PRIME, 267 .load = exynos_drm_load, 268 .unload = exynos_drm_unload, 269 .open = exynos_drm_open, 270 .preclose = exynos_drm_preclose, 271 .lastclose = exynos_drm_lastclose, 272 .postclose = exynos_drm_postclose, 273 .get_vblank_counter = drm_vblank_count, 274 .enable_vblank = exynos_drm_crtc_enable_vblank, 275 .disable_vblank = exynos_drm_crtc_disable_vblank, 276 .gem_free_object = exynos_drm_gem_free_object, 277 .gem_vm_ops = &exynos_drm_gem_vm_ops, 278 .dumb_create = exynos_drm_gem_dumb_create, 279 .dumb_map_offset = exynos_drm_gem_dumb_map_offset, 280 .dumb_destroy = drm_gem_dumb_destroy, 281 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 282 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 283 .gem_prime_export = exynos_dmabuf_prime_export, 284 .gem_prime_import = exynos_dmabuf_prime_import, 285 .ioctls = exynos_ioctls, 286 .num_ioctls = ARRAY_SIZE(exynos_ioctls), 287 .fops = &exynos_drm_driver_fops, 288 .name = DRIVER_NAME, 289 .desc = DRIVER_DESC, 290 .date = DRIVER_DATE, 291 .major = DRIVER_MAJOR, 292 .minor = DRIVER_MINOR, 293 }; 294 295 static int exynos_drm_platform_probe(struct platform_device *pdev) 296 { 297 int ret; 298 299 ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 300 if (ret) 301 return ret; 302 303 return drm_platform_init(&exynos_drm_driver, pdev); 304 } 305 306 static int exynos_drm_platform_remove(struct platform_device *pdev) 307 { 308 drm_platform_exit(&exynos_drm_driver, pdev); 309 310 return 0; 311 } 312 313 static struct platform_driver exynos_drm_platform_driver = { 314 .probe = exynos_drm_platform_probe, 315 .remove = exynos_drm_platform_remove, 316 .driver = { 317 .owner = THIS_MODULE, 318 .name = "exynos-drm", 319 }, 320 }; 321 322 static int __init exynos_drm_init(void) 323 { 324 int ret; 325 326 #ifdef CONFIG_DRM_EXYNOS_FIMD 327 ret = platform_driver_register(&fimd_driver); 328 if (ret < 0) 329 goto out_fimd; 330 #endif 331 332 #ifdef CONFIG_DRM_EXYNOS_HDMI 333 ret = platform_driver_register(&hdmi_driver); 334 if (ret < 0) 335 goto out_hdmi; 336 ret = platform_driver_register(&mixer_driver); 337 if (ret < 0) 338 goto out_mixer; 339 ret = platform_driver_register(&exynos_drm_common_hdmi_driver); 340 if (ret < 0) 341 goto out_common_hdmi; 342 343 ret = exynos_platform_device_hdmi_register(); 344 if (ret < 0) 345 goto out_common_hdmi_dev; 346 #endif 347 348 #ifdef CONFIG_DRM_EXYNOS_VIDI 349 ret = platform_driver_register(&vidi_driver); 350 if (ret < 0) 351 goto out_vidi; 352 #endif 353 354 #ifdef CONFIG_DRM_EXYNOS_G2D 355 ret = platform_driver_register(&g2d_driver); 356 if (ret < 0) 357 goto out_g2d; 358 #endif 359 360 #ifdef CONFIG_DRM_EXYNOS_FIMC 361 ret = platform_driver_register(&fimc_driver); 362 if (ret < 0) 363 goto out_fimc; 364 #endif 365 366 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 367 ret = platform_driver_register(&rotator_driver); 368 if (ret < 0) 369 goto out_rotator; 370 #endif 371 372 #ifdef CONFIG_DRM_EXYNOS_GSC 373 ret = platform_driver_register(&gsc_driver); 374 if (ret < 0) 375 goto out_gsc; 376 #endif 377 378 #ifdef CONFIG_DRM_EXYNOS_IPP 379 ret = platform_driver_register(&ipp_driver); 380 if (ret < 0) 381 goto out_ipp; 382 383 ret = exynos_platform_device_ipp_register(); 384 if (ret < 0) 385 goto out_ipp_dev; 386 #endif 387 388 ret = platform_driver_register(&exynos_drm_platform_driver); 389 if (ret < 0) 390 goto out_drm; 391 392 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, 393 NULL, 0); 394 if (IS_ERR(exynos_drm_pdev)) { 395 ret = PTR_ERR(exynos_drm_pdev); 396 goto out; 397 } 398 399 return 0; 400 401 out: 402 platform_driver_unregister(&exynos_drm_platform_driver); 403 404 out_drm: 405 #ifdef CONFIG_DRM_EXYNOS_IPP 406 exynos_platform_device_ipp_unregister(); 407 out_ipp_dev: 408 platform_driver_unregister(&ipp_driver); 409 out_ipp: 410 #endif 411 412 #ifdef CONFIG_DRM_EXYNOS_GSC 413 platform_driver_unregister(&gsc_driver); 414 out_gsc: 415 #endif 416 417 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 418 platform_driver_unregister(&rotator_driver); 419 out_rotator: 420 #endif 421 422 #ifdef CONFIG_DRM_EXYNOS_FIMC 423 platform_driver_unregister(&fimc_driver); 424 out_fimc: 425 #endif 426 427 #ifdef CONFIG_DRM_EXYNOS_G2D 428 platform_driver_unregister(&g2d_driver); 429 out_g2d: 430 #endif 431 432 #ifdef CONFIG_DRM_EXYNOS_VIDI 433 platform_driver_unregister(&vidi_driver); 434 out_vidi: 435 #endif 436 437 #ifdef CONFIG_DRM_EXYNOS_HDMI 438 exynos_platform_device_hdmi_unregister(); 439 out_common_hdmi_dev: 440 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 441 out_common_hdmi: 442 platform_driver_unregister(&mixer_driver); 443 out_mixer: 444 platform_driver_unregister(&hdmi_driver); 445 out_hdmi: 446 #endif 447 448 #ifdef CONFIG_DRM_EXYNOS_FIMD 449 platform_driver_unregister(&fimd_driver); 450 out_fimd: 451 #endif 452 return ret; 453 } 454 455 static void __exit exynos_drm_exit(void) 456 { 457 platform_device_unregister(exynos_drm_pdev); 458 459 platform_driver_unregister(&exynos_drm_platform_driver); 460 461 #ifdef CONFIG_DRM_EXYNOS_IPP 462 exynos_platform_device_ipp_unregister(); 463 platform_driver_unregister(&ipp_driver); 464 #endif 465 466 #ifdef CONFIG_DRM_EXYNOS_GSC 467 platform_driver_unregister(&gsc_driver); 468 #endif 469 470 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 471 platform_driver_unregister(&rotator_driver); 472 #endif 473 474 #ifdef CONFIG_DRM_EXYNOS_FIMC 475 platform_driver_unregister(&fimc_driver); 476 #endif 477 478 #ifdef CONFIG_DRM_EXYNOS_G2D 479 platform_driver_unregister(&g2d_driver); 480 #endif 481 482 #ifdef CONFIG_DRM_EXYNOS_HDMI 483 exynos_platform_device_hdmi_unregister(); 484 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 485 platform_driver_unregister(&mixer_driver); 486 platform_driver_unregister(&hdmi_driver); 487 #endif 488 489 #ifdef CONFIG_DRM_EXYNOS_VIDI 490 platform_driver_unregister(&vidi_driver); 491 #endif 492 493 #ifdef CONFIG_DRM_EXYNOS_FIMD 494 platform_driver_unregister(&fimd_driver); 495 #endif 496 } 497 498 module_init(exynos_drm_init); 499 module_exit(exynos_drm_exit); 500 501 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 502 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 503 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 504 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 505 MODULE_LICENSE("GPL"); 506