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 DRM_ERROR("failed to allocate private\n"); 52 return -ENOMEM; 53 } 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 return 0; 125 126 err_drm_device: 127 exynos_drm_device_unregister(dev); 128 err_vblank: 129 drm_vblank_cleanup(dev); 130 err_release_iommu_mapping: 131 drm_release_iommu_mapping(dev); 132 err_crtc: 133 drm_mode_config_cleanup(dev); 134 kfree(private); 135 136 return ret; 137 } 138 139 static int exynos_drm_unload(struct drm_device *dev) 140 { 141 exynos_drm_fbdev_fini(dev); 142 exynos_drm_device_unregister(dev); 143 drm_vblank_cleanup(dev); 144 drm_kms_helper_poll_fini(dev); 145 drm_mode_config_cleanup(dev); 146 147 drm_release_iommu_mapping(dev); 148 kfree(dev->dev_private); 149 150 dev->dev_private = NULL; 151 152 return 0; 153 } 154 155 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) 156 { 157 struct drm_exynos_file_private *file_priv; 158 int ret; 159 160 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); 161 if (!file_priv) 162 return -ENOMEM; 163 164 file->driver_priv = file_priv; 165 166 ret = exynos_drm_subdrv_open(dev, file); 167 if (ret) { 168 kfree(file_priv); 169 file->driver_priv = NULL; 170 } 171 172 return ret; 173 } 174 175 static void exynos_drm_preclose(struct drm_device *dev, 176 struct drm_file *file) 177 { 178 struct exynos_drm_private *private = dev->dev_private; 179 struct drm_pending_vblank_event *e, *t; 180 unsigned long flags; 181 182 /* release events of current file */ 183 spin_lock_irqsave(&dev->event_lock, flags); 184 list_for_each_entry_safe(e, t, &private->pageflip_event_list, 185 base.link) { 186 if (e->base.file_priv == file) { 187 list_del(&e->base.link); 188 e->base.destroy(&e->base); 189 } 190 } 191 spin_unlock_irqrestore(&dev->event_lock, flags); 192 193 exynos_drm_subdrv_close(dev, file); 194 } 195 196 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) 197 { 198 if (!file->driver_priv) 199 return; 200 201 kfree(file->driver_priv); 202 file->driver_priv = NULL; 203 } 204 205 static void exynos_drm_lastclose(struct drm_device *dev) 206 { 207 exynos_drm_fbdev_restore_mode(dev); 208 } 209 210 static const struct vm_operations_struct exynos_drm_gem_vm_ops = { 211 .fault = exynos_drm_gem_fault, 212 .open = drm_gem_vm_open, 213 .close = drm_gem_vm_close, 214 }; 215 216 static struct drm_ioctl_desc exynos_ioctls[] = { 217 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 218 DRM_UNLOCKED | DRM_AUTH), 219 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET, 220 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED | 221 DRM_AUTH), 222 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP, 223 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH), 224 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, 225 exynos_drm_gem_get_ioctl, DRM_UNLOCKED), 226 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, 227 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), 228 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, 229 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), 230 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, 231 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), 232 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, 233 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), 234 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, 235 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH), 236 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, 237 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH), 238 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, 239 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH), 240 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, 241 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH), 242 }; 243 244 static const struct file_operations exynos_drm_driver_fops = { 245 .owner = THIS_MODULE, 246 .open = drm_open, 247 .mmap = exynos_drm_gem_mmap, 248 .poll = drm_poll, 249 .read = drm_read, 250 .unlocked_ioctl = drm_ioctl, 251 #ifdef CONFIG_COMPAT 252 .compat_ioctl = drm_compat_ioctl, 253 #endif 254 .release = drm_release, 255 }; 256 257 static struct drm_driver exynos_drm_driver = { 258 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET | 259 DRIVER_GEM | DRIVER_PRIME, 260 .load = exynos_drm_load, 261 .unload = exynos_drm_unload, 262 .open = exynos_drm_open, 263 .preclose = exynos_drm_preclose, 264 .lastclose = exynos_drm_lastclose, 265 .postclose = exynos_drm_postclose, 266 .get_vblank_counter = drm_vblank_count, 267 .enable_vblank = exynos_drm_crtc_enable_vblank, 268 .disable_vblank = exynos_drm_crtc_disable_vblank, 269 .gem_init_object = exynos_drm_gem_init_object, 270 .gem_free_object = exynos_drm_gem_free_object, 271 .gem_vm_ops = &exynos_drm_gem_vm_ops, 272 .dumb_create = exynos_drm_gem_dumb_create, 273 .dumb_map_offset = exynos_drm_gem_dumb_map_offset, 274 .dumb_destroy = exynos_drm_gem_dumb_destroy, 275 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 276 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 277 .gem_prime_export = exynos_dmabuf_prime_export, 278 .gem_prime_import = exynos_dmabuf_prime_import, 279 .ioctls = exynos_ioctls, 280 .fops = &exynos_drm_driver_fops, 281 .name = DRIVER_NAME, 282 .desc = DRIVER_DESC, 283 .date = DRIVER_DATE, 284 .major = DRIVER_MAJOR, 285 .minor = DRIVER_MINOR, 286 }; 287 288 static int exynos_drm_platform_probe(struct platform_device *pdev) 289 { 290 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); 291 exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls); 292 293 return drm_platform_init(&exynos_drm_driver, pdev); 294 } 295 296 static int exynos_drm_platform_remove(struct platform_device *pdev) 297 { 298 drm_platform_exit(&exynos_drm_driver, pdev); 299 300 return 0; 301 } 302 303 static struct platform_driver exynos_drm_platform_driver = { 304 .probe = exynos_drm_platform_probe, 305 .remove = exynos_drm_platform_remove, 306 .driver = { 307 .owner = THIS_MODULE, 308 .name = "exynos-drm", 309 }, 310 }; 311 312 static int __init exynos_drm_init(void) 313 { 314 int ret; 315 316 #ifdef CONFIG_DRM_EXYNOS_FIMD 317 ret = platform_driver_register(&fimd_driver); 318 if (ret < 0) 319 goto out_fimd; 320 #endif 321 322 #ifdef CONFIG_DRM_EXYNOS_HDMI 323 ret = platform_driver_register(&hdmi_driver); 324 if (ret < 0) 325 goto out_hdmi; 326 ret = platform_driver_register(&mixer_driver); 327 if (ret < 0) 328 goto out_mixer; 329 ret = platform_driver_register(&exynos_drm_common_hdmi_driver); 330 if (ret < 0) 331 goto out_common_hdmi; 332 333 ret = exynos_platform_device_hdmi_register(); 334 if (ret < 0) 335 goto out_common_hdmi_dev; 336 #endif 337 338 #ifdef CONFIG_DRM_EXYNOS_VIDI 339 ret = platform_driver_register(&vidi_driver); 340 if (ret < 0) 341 goto out_vidi; 342 #endif 343 344 #ifdef CONFIG_DRM_EXYNOS_G2D 345 ret = platform_driver_register(&g2d_driver); 346 if (ret < 0) 347 goto out_g2d; 348 #endif 349 350 #ifdef CONFIG_DRM_EXYNOS_FIMC 351 ret = platform_driver_register(&fimc_driver); 352 if (ret < 0) 353 goto out_fimc; 354 #endif 355 356 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 357 ret = platform_driver_register(&rotator_driver); 358 if (ret < 0) 359 goto out_rotator; 360 #endif 361 362 #ifdef CONFIG_DRM_EXYNOS_GSC 363 ret = platform_driver_register(&gsc_driver); 364 if (ret < 0) 365 goto out_gsc; 366 #endif 367 368 #ifdef CONFIG_DRM_EXYNOS_IPP 369 ret = platform_driver_register(&ipp_driver); 370 if (ret < 0) 371 goto out_ipp; 372 373 ret = exynos_platform_device_ipp_register(); 374 if (ret < 0) 375 goto out_ipp_dev; 376 #endif 377 378 ret = platform_driver_register(&exynos_drm_platform_driver); 379 if (ret < 0) 380 goto out_drm; 381 382 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, 383 NULL, 0); 384 if (IS_ERR(exynos_drm_pdev)) { 385 ret = PTR_ERR(exynos_drm_pdev); 386 goto out; 387 } 388 389 return 0; 390 391 out: 392 platform_driver_unregister(&exynos_drm_platform_driver); 393 394 out_drm: 395 #ifdef CONFIG_DRM_EXYNOS_IPP 396 exynos_platform_device_ipp_unregister(); 397 out_ipp_dev: 398 platform_driver_unregister(&ipp_driver); 399 out_ipp: 400 #endif 401 402 #ifdef CONFIG_DRM_EXYNOS_GSC 403 platform_driver_unregister(&gsc_driver); 404 out_gsc: 405 #endif 406 407 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 408 platform_driver_unregister(&rotator_driver); 409 out_rotator: 410 #endif 411 412 #ifdef CONFIG_DRM_EXYNOS_FIMC 413 platform_driver_unregister(&fimc_driver); 414 out_fimc: 415 #endif 416 417 #ifdef CONFIG_DRM_EXYNOS_G2D 418 platform_driver_unregister(&g2d_driver); 419 out_g2d: 420 #endif 421 422 #ifdef CONFIG_DRM_EXYNOS_VIDI 423 platform_driver_unregister(&vidi_driver); 424 out_vidi: 425 #endif 426 427 #ifdef CONFIG_DRM_EXYNOS_HDMI 428 exynos_platform_device_hdmi_unregister(); 429 out_common_hdmi_dev: 430 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 431 out_common_hdmi: 432 platform_driver_unregister(&mixer_driver); 433 out_mixer: 434 platform_driver_unregister(&hdmi_driver); 435 out_hdmi: 436 #endif 437 438 #ifdef CONFIG_DRM_EXYNOS_FIMD 439 platform_driver_unregister(&fimd_driver); 440 out_fimd: 441 #endif 442 return ret; 443 } 444 445 static void __exit exynos_drm_exit(void) 446 { 447 platform_device_unregister(exynos_drm_pdev); 448 449 platform_driver_unregister(&exynos_drm_platform_driver); 450 451 #ifdef CONFIG_DRM_EXYNOS_IPP 452 exynos_platform_device_ipp_unregister(); 453 platform_driver_unregister(&ipp_driver); 454 #endif 455 456 #ifdef CONFIG_DRM_EXYNOS_GSC 457 platform_driver_unregister(&gsc_driver); 458 #endif 459 460 #ifdef CONFIG_DRM_EXYNOS_ROTATOR 461 platform_driver_unregister(&rotator_driver); 462 #endif 463 464 #ifdef CONFIG_DRM_EXYNOS_FIMC 465 platform_driver_unregister(&fimc_driver); 466 #endif 467 468 #ifdef CONFIG_DRM_EXYNOS_G2D 469 platform_driver_unregister(&g2d_driver); 470 #endif 471 472 #ifdef CONFIG_DRM_EXYNOS_HDMI 473 exynos_platform_device_hdmi_unregister(); 474 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 475 platform_driver_unregister(&mixer_driver); 476 platform_driver_unregister(&hdmi_driver); 477 #endif 478 479 #ifdef CONFIG_DRM_EXYNOS_VIDI 480 platform_driver_unregister(&vidi_driver); 481 #endif 482 483 #ifdef CONFIG_DRM_EXYNOS_FIMD 484 platform_driver_unregister(&fimd_driver); 485 #endif 486 } 487 488 module_init(exynos_drm_init); 489 module_exit(exynos_drm_exit); 490 491 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 492 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 493 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 494 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 495 MODULE_LICENSE("GPL"); 496