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 <drm/drmP.h> 29 #include <drm/drm_crtc_helper.h> 30 31 #include <drm/exynos_drm.h> 32 33 #include "exynos_drm_drv.h" 34 #include "exynos_drm_crtc.h" 35 #include "exynos_drm_encoder.h" 36 #include "exynos_drm_fbdev.h" 37 #include "exynos_drm_fb.h" 38 #include "exynos_drm_gem.h" 39 #include "exynos_drm_plane.h" 40 #include "exynos_drm_vidi.h" 41 #include "exynos_drm_dmabuf.h" 42 #include "exynos_drm_g2d.h" 43 44 #define DRIVER_NAME "exynos" 45 #define DRIVER_DESC "Samsung SoC DRM" 46 #define DRIVER_DATE "20110530" 47 #define DRIVER_MAJOR 1 48 #define DRIVER_MINOR 0 49 50 #define VBLANK_OFF_DELAY 50000 51 52 static int exynos_drm_load(struct drm_device *dev, unsigned long flags) 53 { 54 struct exynos_drm_private *private; 55 int ret; 56 int nr; 57 58 DRM_DEBUG_DRIVER("%s\n", __FILE__); 59 60 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); 61 if (!private) { 62 DRM_ERROR("failed to allocate private\n"); 63 return -ENOMEM; 64 } 65 66 INIT_LIST_HEAD(&private->pageflip_event_list); 67 dev->dev_private = (void *)private; 68 69 drm_mode_config_init(dev); 70 71 /* init kms poll for handling hpd */ 72 drm_kms_helper_poll_init(dev); 73 74 exynos_drm_mode_config_init(dev); 75 76 /* 77 * EXYNOS4 is enough to have two CRTCs and each crtc would be used 78 * without dependency of hardware. 79 */ 80 for (nr = 0; nr < MAX_CRTC; nr++) { 81 ret = exynos_drm_crtc_create(dev, nr); 82 if (ret) 83 goto err_crtc; 84 } 85 86 for (nr = 0; nr < MAX_PLANE; nr++) { 87 struct drm_plane *plane; 88 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1; 89 90 plane = exynos_plane_init(dev, possible_crtcs, false); 91 if (!plane) 92 goto err_crtc; 93 } 94 95 ret = drm_vblank_init(dev, MAX_CRTC); 96 if (ret) 97 goto err_crtc; 98 99 /* 100 * probe sub drivers such as display controller and hdmi driver, 101 * that were registered at probe() of platform driver 102 * to the sub driver and create encoder and connector for them. 103 */ 104 ret = exynos_drm_device_register(dev); 105 if (ret) 106 goto err_vblank; 107 108 /* setup possible_clones. */ 109 exynos_drm_encoder_setup(dev); 110 111 /* 112 * create and configure fb helper and also exynos specific 113 * fbdev object. 114 */ 115 ret = exynos_drm_fbdev_init(dev); 116 if (ret) { 117 DRM_ERROR("failed to initialize drm fbdev\n"); 118 goto err_drm_device; 119 } 120 121 drm_vblank_offdelay = VBLANK_OFF_DELAY; 122 123 return 0; 124 125 err_drm_device: 126 exynos_drm_device_unregister(dev); 127 err_vblank: 128 drm_vblank_cleanup(dev); 129 err_crtc: 130 drm_mode_config_cleanup(dev); 131 kfree(private); 132 133 return ret; 134 } 135 136 static int exynos_drm_unload(struct drm_device *dev) 137 { 138 DRM_DEBUG_DRIVER("%s\n", __FILE__); 139 140 exynos_drm_fbdev_fini(dev); 141 exynos_drm_device_unregister(dev); 142 drm_vblank_cleanup(dev); 143 drm_kms_helper_poll_fini(dev); 144 drm_mode_config_cleanup(dev); 145 kfree(dev->dev_private); 146 147 dev->dev_private = NULL; 148 149 return 0; 150 } 151 152 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) 153 { 154 struct drm_exynos_file_private *file_priv; 155 156 DRM_DEBUG_DRIVER("%s\n", __FILE__); 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 return exynos_drm_subdrv_open(dev, file); 165 } 166 167 static void exynos_drm_preclose(struct drm_device *dev, 168 struct drm_file *file) 169 { 170 struct exynos_drm_private *private = dev->dev_private; 171 struct drm_pending_vblank_event *e, *t; 172 unsigned long flags; 173 174 DRM_DEBUG_DRIVER("%s\n", __FILE__); 175 176 /* release events of current file */ 177 spin_lock_irqsave(&dev->event_lock, flags); 178 list_for_each_entry_safe(e, t, &private->pageflip_event_list, 179 base.link) { 180 if (e->base.file_priv == file) { 181 list_del(&e->base.link); 182 e->base.destroy(&e->base); 183 } 184 } 185 spin_unlock_irqrestore(&dev->event_lock, flags); 186 187 exynos_drm_subdrv_close(dev, file); 188 } 189 190 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) 191 { 192 DRM_DEBUG_DRIVER("%s\n", __FILE__); 193 194 if (!file->driver_priv) 195 return; 196 197 kfree(file->driver_priv); 198 file->driver_priv = NULL; 199 } 200 201 static void exynos_drm_lastclose(struct drm_device *dev) 202 { 203 DRM_DEBUG_DRIVER("%s\n", __FILE__); 204 205 exynos_drm_fbdev_restore_mode(dev); 206 } 207 208 static const struct vm_operations_struct exynos_drm_gem_vm_ops = { 209 .fault = exynos_drm_gem_fault, 210 .open = drm_gem_vm_open, 211 .close = drm_gem_vm_close, 212 }; 213 214 static struct drm_ioctl_desc exynos_ioctls[] = { 215 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 216 DRM_UNLOCKED | DRM_AUTH), 217 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET, 218 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED | 219 DRM_AUTH), 220 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP, 221 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH), 222 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, 223 exynos_drm_gem_get_ioctl, DRM_UNLOCKED), 224 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, 225 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), 226 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, 227 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), 228 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, 229 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), 230 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, 231 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), 232 }; 233 234 static const struct file_operations exynos_drm_driver_fops = { 235 .owner = THIS_MODULE, 236 .open = drm_open, 237 .mmap = exynos_drm_gem_mmap, 238 .poll = drm_poll, 239 .read = drm_read, 240 .unlocked_ioctl = drm_ioctl, 241 #ifdef CONFIG_COMPAT 242 .compat_ioctl = drm_compat_ioctl, 243 #endif 244 .release = drm_release, 245 }; 246 247 static struct drm_driver exynos_drm_driver = { 248 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET | 249 DRIVER_GEM | DRIVER_PRIME, 250 .load = exynos_drm_load, 251 .unload = exynos_drm_unload, 252 .open = exynos_drm_open, 253 .preclose = exynos_drm_preclose, 254 .lastclose = exynos_drm_lastclose, 255 .postclose = exynos_drm_postclose, 256 .get_vblank_counter = drm_vblank_count, 257 .enable_vblank = exynos_drm_crtc_enable_vblank, 258 .disable_vblank = exynos_drm_crtc_disable_vblank, 259 .gem_init_object = exynos_drm_gem_init_object, 260 .gem_free_object = exynos_drm_gem_free_object, 261 .gem_vm_ops = &exynos_drm_gem_vm_ops, 262 .dumb_create = exynos_drm_gem_dumb_create, 263 .dumb_map_offset = exynos_drm_gem_dumb_map_offset, 264 .dumb_destroy = exynos_drm_gem_dumb_destroy, 265 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 266 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 267 .gem_prime_export = exynos_dmabuf_prime_export, 268 .gem_prime_import = exynos_dmabuf_prime_import, 269 .ioctls = exynos_ioctls, 270 .fops = &exynos_drm_driver_fops, 271 .name = DRIVER_NAME, 272 .desc = DRIVER_DESC, 273 .date = DRIVER_DATE, 274 .major = DRIVER_MAJOR, 275 .minor = DRIVER_MINOR, 276 }; 277 278 static int exynos_drm_platform_probe(struct platform_device *pdev) 279 { 280 DRM_DEBUG_DRIVER("%s\n", __FILE__); 281 282 exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls); 283 284 return drm_platform_init(&exynos_drm_driver, pdev); 285 } 286 287 static int exynos_drm_platform_remove(struct platform_device *pdev) 288 { 289 DRM_DEBUG_DRIVER("%s\n", __FILE__); 290 291 drm_platform_exit(&exynos_drm_driver, pdev); 292 293 return 0; 294 } 295 296 static struct platform_driver exynos_drm_platform_driver = { 297 .probe = exynos_drm_platform_probe, 298 .remove = __devexit_p(exynos_drm_platform_remove), 299 .driver = { 300 .owner = THIS_MODULE, 301 .name = "exynos-drm", 302 }, 303 }; 304 305 static int __init exynos_drm_init(void) 306 { 307 int ret; 308 309 DRM_DEBUG_DRIVER("%s\n", __FILE__); 310 311 #ifdef CONFIG_DRM_EXYNOS_FIMD 312 ret = platform_driver_register(&fimd_driver); 313 if (ret < 0) 314 goto out_fimd; 315 #endif 316 317 #ifdef CONFIG_DRM_EXYNOS_HDMI 318 ret = platform_driver_register(&hdmi_driver); 319 if (ret < 0) 320 goto out_hdmi; 321 ret = platform_driver_register(&mixer_driver); 322 if (ret < 0) 323 goto out_mixer; 324 ret = platform_driver_register(&exynos_drm_common_hdmi_driver); 325 if (ret < 0) 326 goto out_common_hdmi; 327 #endif 328 329 #ifdef CONFIG_DRM_EXYNOS_VIDI 330 ret = platform_driver_register(&vidi_driver); 331 if (ret < 0) 332 goto out_vidi; 333 #endif 334 335 #ifdef CONFIG_DRM_EXYNOS_G2D 336 ret = platform_driver_register(&g2d_driver); 337 if (ret < 0) 338 goto out_g2d; 339 #endif 340 341 ret = platform_driver_register(&exynos_drm_platform_driver); 342 if (ret < 0) 343 goto out; 344 345 return 0; 346 347 out: 348 #ifdef CONFIG_DRM_EXYNOS_G2D 349 platform_driver_unregister(&g2d_driver); 350 out_g2d: 351 #endif 352 353 #ifdef CONFIG_DRM_EXYNOS_VIDI 354 out_vidi: 355 platform_driver_unregister(&vidi_driver); 356 #endif 357 358 #ifdef CONFIG_DRM_EXYNOS_HDMI 359 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 360 out_common_hdmi: 361 platform_driver_unregister(&mixer_driver); 362 out_mixer: 363 platform_driver_unregister(&hdmi_driver); 364 out_hdmi: 365 #endif 366 367 #ifdef CONFIG_DRM_EXYNOS_FIMD 368 platform_driver_unregister(&fimd_driver); 369 out_fimd: 370 #endif 371 return ret; 372 } 373 374 static void __exit exynos_drm_exit(void) 375 { 376 DRM_DEBUG_DRIVER("%s\n", __FILE__); 377 378 platform_driver_unregister(&exynos_drm_platform_driver); 379 380 #ifdef CONFIG_DRM_EXYNOS_G2D 381 platform_driver_unregister(&g2d_driver); 382 #endif 383 384 #ifdef CONFIG_DRM_EXYNOS_HDMI 385 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 386 platform_driver_unregister(&mixer_driver); 387 platform_driver_unregister(&hdmi_driver); 388 #endif 389 390 #ifdef CONFIG_DRM_EXYNOS_VIDI 391 platform_driver_unregister(&vidi_driver); 392 #endif 393 394 #ifdef CONFIG_DRM_EXYNOS_FIMD 395 platform_driver_unregister(&fimd_driver); 396 #endif 397 } 398 399 module_init(exynos_drm_init); 400 module_exit(exynos_drm_exit); 401 402 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 403 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 404 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 405 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 406 MODULE_LICENSE("GPL"); 407