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 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the "Software"), 10 * to deal in the Software without restriction, including without limitation 11 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 12 * and/or sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the next 16 * paragraph) shall be included in all copies or substantial portions of the 17 * Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 25 * OTHER DEALINGS IN THE SOFTWARE. 26 */ 27 28 #include "drmP.h" 29 #include "drm.h" 30 #include "drm_crtc_helper.h" 31 32 #include <drm/exynos_drm.h> 33 34 #include "exynos_drm_drv.h" 35 #include "exynos_drm_crtc.h" 36 #include "exynos_drm_encoder.h" 37 #include "exynos_drm_fbdev.h" 38 #include "exynos_drm_fb.h" 39 #include "exynos_drm_gem.h" 40 #include "exynos_drm_plane.h" 41 #include "exynos_drm_vidi.h" 42 #include "exynos_drm_dmabuf.h" 43 #include "exynos_drm_g2d.h" 44 45 #define DRIVER_NAME "exynos" 46 #define DRIVER_DESC "Samsung SoC DRM" 47 #define DRIVER_DATE "20110530" 48 #define DRIVER_MAJOR 1 49 #define DRIVER_MINOR 0 50 51 #define VBLANK_OFF_DELAY 50000 52 53 static int exynos_drm_load(struct drm_device *dev, unsigned long flags) 54 { 55 struct exynos_drm_private *private; 56 int ret; 57 int nr; 58 59 DRM_DEBUG_DRIVER("%s\n", __FILE__); 60 61 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); 62 if (!private) { 63 DRM_ERROR("failed to allocate private\n"); 64 return -ENOMEM; 65 } 66 67 INIT_LIST_HEAD(&private->pageflip_event_list); 68 dev->dev_private = (void *)private; 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_crtc; 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_crtc; 94 } 95 96 ret = drm_vblank_init(dev, MAX_CRTC); 97 if (ret) 98 goto err_crtc; 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_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 DRM_DEBUG_DRIVER("%s\n", __FILE__); 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 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; 156 157 DRM_DEBUG_DRIVER("%s\n", __FILE__); 158 159 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); 160 if (!file_priv) 161 return -ENOMEM; 162 163 file->driver_priv = file_priv; 164 165 return exynos_drm_subdrv_open(dev, file); 166 } 167 168 static void exynos_drm_preclose(struct drm_device *dev, 169 struct drm_file *file) 170 { 171 struct exynos_drm_private *private = dev->dev_private; 172 struct drm_pending_vblank_event *e, *t; 173 unsigned long flags; 174 175 DRM_DEBUG_DRIVER("%s\n", __FILE__); 176 177 /* release events of current file */ 178 spin_lock_irqsave(&dev->event_lock, flags); 179 list_for_each_entry_safe(e, t, &private->pageflip_event_list, 180 base.link) { 181 if (e->base.file_priv == file) { 182 list_del(&e->base.link); 183 e->base.destroy(&e->base); 184 } 185 } 186 spin_unlock_irqrestore(&dev->event_lock, flags); 187 188 exynos_drm_subdrv_close(dev, file); 189 } 190 191 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) 192 { 193 DRM_DEBUG_DRIVER("%s\n", __FILE__); 194 195 if (!file->driver_priv) 196 return; 197 198 kfree(file->driver_priv); 199 file->driver_priv = NULL; 200 } 201 202 static void exynos_drm_lastclose(struct drm_device *dev) 203 { 204 DRM_DEBUG_DRIVER("%s\n", __FILE__); 205 206 exynos_drm_fbdev_restore_mode(dev); 207 } 208 209 static const struct vm_operations_struct exynos_drm_gem_vm_ops = { 210 .fault = exynos_drm_gem_fault, 211 .open = drm_gem_vm_open, 212 .close = drm_gem_vm_close, 213 }; 214 215 static struct drm_ioctl_desc exynos_ioctls[] = { 216 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 217 DRM_UNLOCKED | DRM_AUTH), 218 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET, 219 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED | 220 DRM_AUTH), 221 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP, 222 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH), 223 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, 224 exynos_drm_gem_get_ioctl, DRM_UNLOCKED), 225 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, 226 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), 227 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, 228 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), 229 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, 230 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), 231 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, 232 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), 233 }; 234 235 static const struct file_operations exynos_drm_driver_fops = { 236 .owner = THIS_MODULE, 237 .open = drm_open, 238 .mmap = exynos_drm_gem_mmap, 239 .poll = drm_poll, 240 .read = drm_read, 241 .unlocked_ioctl = drm_ioctl, 242 #ifdef CONFIG_COMPAT 243 .compat_ioctl = drm_compat_ioctl, 244 #endif 245 .release = drm_release, 246 }; 247 248 static struct drm_driver exynos_drm_driver = { 249 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET | 250 DRIVER_GEM | DRIVER_PRIME, 251 .load = exynos_drm_load, 252 .unload = exynos_drm_unload, 253 .open = exynos_drm_open, 254 .preclose = exynos_drm_preclose, 255 .lastclose = exynos_drm_lastclose, 256 .postclose = exynos_drm_postclose, 257 .get_vblank_counter = drm_vblank_count, 258 .enable_vblank = exynos_drm_crtc_enable_vblank, 259 .disable_vblank = exynos_drm_crtc_disable_vblank, 260 .gem_init_object = exynos_drm_gem_init_object, 261 .gem_free_object = exynos_drm_gem_free_object, 262 .gem_vm_ops = &exynos_drm_gem_vm_ops, 263 .dumb_create = exynos_drm_gem_dumb_create, 264 .dumb_map_offset = exynos_drm_gem_dumb_map_offset, 265 .dumb_destroy = exynos_drm_gem_dumb_destroy, 266 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 267 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 268 .gem_prime_export = exynos_dmabuf_prime_export, 269 .gem_prime_import = exynos_dmabuf_prime_import, 270 .ioctls = exynos_ioctls, 271 .fops = &exynos_drm_driver_fops, 272 .name = DRIVER_NAME, 273 .desc = DRIVER_DESC, 274 .date = DRIVER_DATE, 275 .major = DRIVER_MAJOR, 276 .minor = DRIVER_MINOR, 277 }; 278 279 static int exynos_drm_platform_probe(struct platform_device *pdev) 280 { 281 DRM_DEBUG_DRIVER("%s\n", __FILE__); 282 283 exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls); 284 285 return drm_platform_init(&exynos_drm_driver, pdev); 286 } 287 288 static int exynos_drm_platform_remove(struct platform_device *pdev) 289 { 290 DRM_DEBUG_DRIVER("%s\n", __FILE__); 291 292 drm_platform_exit(&exynos_drm_driver, pdev); 293 294 return 0; 295 } 296 297 static struct platform_driver exynos_drm_platform_driver = { 298 .probe = exynos_drm_platform_probe, 299 .remove = __devexit_p(exynos_drm_platform_remove), 300 .driver = { 301 .owner = THIS_MODULE, 302 .name = "exynos-drm", 303 }, 304 }; 305 306 static int __init exynos_drm_init(void) 307 { 308 int ret; 309 310 DRM_DEBUG_DRIVER("%s\n", __FILE__); 311 312 #ifdef CONFIG_DRM_EXYNOS_FIMD 313 ret = platform_driver_register(&fimd_driver); 314 if (ret < 0) 315 goto out_fimd; 316 #endif 317 318 #ifdef CONFIG_DRM_EXYNOS_HDMI 319 ret = platform_driver_register(&hdmi_driver); 320 if (ret < 0) 321 goto out_hdmi; 322 ret = platform_driver_register(&mixer_driver); 323 if (ret < 0) 324 goto out_mixer; 325 ret = platform_driver_register(&exynos_drm_common_hdmi_driver); 326 if (ret < 0) 327 goto out_common_hdmi; 328 #endif 329 330 #ifdef CONFIG_DRM_EXYNOS_VIDI 331 ret = platform_driver_register(&vidi_driver); 332 if (ret < 0) 333 goto out_vidi; 334 #endif 335 336 #ifdef CONFIG_DRM_EXYNOS_G2D 337 ret = platform_driver_register(&g2d_driver); 338 if (ret < 0) 339 goto out_g2d; 340 #endif 341 342 ret = platform_driver_register(&exynos_drm_platform_driver); 343 if (ret < 0) 344 goto out; 345 346 return 0; 347 348 out: 349 #ifdef CONFIG_DRM_EXYNOS_G2D 350 platform_driver_unregister(&g2d_driver); 351 out_g2d: 352 #endif 353 354 #ifdef CONFIG_DRM_EXYNOS_VIDI 355 out_vidi: 356 platform_driver_unregister(&vidi_driver); 357 #endif 358 359 #ifdef CONFIG_DRM_EXYNOS_HDMI 360 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 361 out_common_hdmi: 362 platform_driver_unregister(&mixer_driver); 363 out_mixer: 364 platform_driver_unregister(&hdmi_driver); 365 out_hdmi: 366 #endif 367 368 #ifdef CONFIG_DRM_EXYNOS_FIMD 369 platform_driver_unregister(&fimd_driver); 370 out_fimd: 371 #endif 372 return ret; 373 } 374 375 static void __exit exynos_drm_exit(void) 376 { 377 DRM_DEBUG_DRIVER("%s\n", __FILE__); 378 379 platform_driver_unregister(&exynos_drm_platform_driver); 380 381 #ifdef CONFIG_DRM_EXYNOS_G2D 382 platform_driver_unregister(&g2d_driver); 383 #endif 384 385 #ifdef CONFIG_DRM_EXYNOS_HDMI 386 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 387 platform_driver_unregister(&mixer_driver); 388 platform_driver_unregister(&hdmi_driver); 389 #endif 390 391 #ifdef CONFIG_DRM_EXYNOS_VIDI 392 platform_driver_unregister(&vidi_driver); 393 #endif 394 395 #ifdef CONFIG_DRM_EXYNOS_FIMD 396 platform_driver_unregister(&fimd_driver); 397 #endif 398 } 399 400 module_init(exynos_drm_init); 401 module_exit(exynos_drm_exit); 402 403 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 404 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 405 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 406 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 407 MODULE_LICENSE("GPL"); 408