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