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 43 #define DRIVER_NAME "exynos" 44 #define DRIVER_DESC "Samsung SoC DRM" 45 #define DRIVER_DATE "20110530" 46 #define DRIVER_MAJOR 1 47 #define DRIVER_MINOR 0 48 49 #define VBLANK_OFF_DELAY 50000 50 51 static int exynos_drm_load(struct drm_device *dev, unsigned long flags) 52 { 53 struct exynos_drm_private *private; 54 int ret; 55 int nr; 56 57 DRM_DEBUG_DRIVER("%s\n", __FILE__); 58 59 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); 60 if (!private) { 61 DRM_ERROR("failed to allocate private\n"); 62 return -ENOMEM; 63 } 64 65 INIT_LIST_HEAD(&private->pageflip_event_list); 66 dev->dev_private = (void *)private; 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_crtc; 83 } 84 85 for (nr = 0; nr < MAX_PLANE; nr++) { 86 ret = exynos_plane_init(dev, nr); 87 if (ret) 88 goto err_crtc; 89 } 90 91 ret = drm_vblank_init(dev, MAX_CRTC); 92 if (ret) 93 goto err_crtc; 94 95 /* 96 * probe sub drivers such as display controller and hdmi driver, 97 * that were registered at probe() of platform driver 98 * to the sub driver and create encoder and connector for them. 99 */ 100 ret = exynos_drm_device_register(dev); 101 if (ret) 102 goto err_vblank; 103 104 /* setup possible_clones. */ 105 exynos_drm_encoder_setup(dev); 106 107 /* 108 * create and configure fb helper and also exynos specific 109 * fbdev object. 110 */ 111 ret = exynos_drm_fbdev_init(dev); 112 if (ret) { 113 DRM_ERROR("failed to initialize drm fbdev\n"); 114 goto err_drm_device; 115 } 116 117 drm_vblank_offdelay = VBLANK_OFF_DELAY; 118 119 return 0; 120 121 err_drm_device: 122 exynos_drm_device_unregister(dev); 123 err_vblank: 124 drm_vblank_cleanup(dev); 125 err_crtc: 126 drm_mode_config_cleanup(dev); 127 kfree(private); 128 129 return ret; 130 } 131 132 static int exynos_drm_unload(struct drm_device *dev) 133 { 134 DRM_DEBUG_DRIVER("%s\n", __FILE__); 135 136 exynos_drm_fbdev_fini(dev); 137 exynos_drm_device_unregister(dev); 138 drm_vblank_cleanup(dev); 139 drm_kms_helper_poll_fini(dev); 140 drm_mode_config_cleanup(dev); 141 kfree(dev->dev_private); 142 143 dev->dev_private = NULL; 144 145 return 0; 146 } 147 148 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) 149 { 150 DRM_DEBUG_DRIVER("%s\n", __FILE__); 151 152 return exynos_drm_subdrv_open(dev, file); 153 } 154 155 static void exynos_drm_preclose(struct drm_device *dev, 156 struct drm_file *file) 157 { 158 struct exynos_drm_private *private = dev->dev_private; 159 struct drm_pending_vblank_event *e, *t; 160 unsigned long flags; 161 162 DRM_DEBUG_DRIVER("%s\n", __FILE__); 163 164 /* release events of current file */ 165 spin_lock_irqsave(&dev->event_lock, flags); 166 list_for_each_entry_safe(e, t, &private->pageflip_event_list, 167 base.link) { 168 if (e->base.file_priv == file) { 169 list_del(&e->base.link); 170 e->base.destroy(&e->base); 171 } 172 } 173 spin_unlock_irqrestore(&dev->event_lock, flags); 174 175 exynos_drm_subdrv_close(dev, file); 176 } 177 178 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) 179 { 180 DRM_DEBUG_DRIVER("%s\n", __FILE__); 181 182 if (!file->driver_priv) 183 return; 184 185 kfree(file->driver_priv); 186 file->driver_priv = NULL; 187 } 188 189 static void exynos_drm_lastclose(struct drm_device *dev) 190 { 191 DRM_DEBUG_DRIVER("%s\n", __FILE__); 192 193 exynos_drm_fbdev_restore_mode(dev); 194 } 195 196 static struct vm_operations_struct exynos_drm_gem_vm_ops = { 197 .fault = exynos_drm_gem_fault, 198 .open = drm_gem_vm_open, 199 .close = drm_gem_vm_close, 200 }; 201 202 static struct drm_ioctl_desc exynos_ioctls[] = { 203 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 204 DRM_UNLOCKED | DRM_AUTH), 205 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET, 206 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED | 207 DRM_AUTH), 208 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP, 209 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH), 210 DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl, 211 DRM_UNLOCKED | DRM_AUTH), 212 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, 213 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), 214 }; 215 216 static const struct file_operations exynos_drm_driver_fops = { 217 .owner = THIS_MODULE, 218 .open = drm_open, 219 .mmap = exynos_drm_gem_mmap, 220 .poll = drm_poll, 221 .read = drm_read, 222 .unlocked_ioctl = drm_ioctl, 223 .release = drm_release, 224 }; 225 226 static struct drm_driver exynos_drm_driver = { 227 .driver_features = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM | 228 DRIVER_MODESET | DRIVER_GEM, 229 .load = exynos_drm_load, 230 .unload = exynos_drm_unload, 231 .open = exynos_drm_open, 232 .preclose = exynos_drm_preclose, 233 .lastclose = exynos_drm_lastclose, 234 .postclose = exynos_drm_postclose, 235 .get_vblank_counter = drm_vblank_count, 236 .enable_vblank = exynos_drm_crtc_enable_vblank, 237 .disable_vblank = exynos_drm_crtc_disable_vblank, 238 .gem_init_object = exynos_drm_gem_init_object, 239 .gem_free_object = exynos_drm_gem_free_object, 240 .gem_vm_ops = &exynos_drm_gem_vm_ops, 241 .dumb_create = exynos_drm_gem_dumb_create, 242 .dumb_map_offset = exynos_drm_gem_dumb_map_offset, 243 .dumb_destroy = exynos_drm_gem_dumb_destroy, 244 .ioctls = exynos_ioctls, 245 .fops = &exynos_drm_driver_fops, 246 .name = DRIVER_NAME, 247 .desc = DRIVER_DESC, 248 .date = DRIVER_DATE, 249 .major = DRIVER_MAJOR, 250 .minor = DRIVER_MINOR, 251 }; 252 253 static int exynos_drm_platform_probe(struct platform_device *pdev) 254 { 255 DRM_DEBUG_DRIVER("%s\n", __FILE__); 256 257 exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls); 258 259 return drm_platform_init(&exynos_drm_driver, pdev); 260 } 261 262 static int exynos_drm_platform_remove(struct platform_device *pdev) 263 { 264 DRM_DEBUG_DRIVER("%s\n", __FILE__); 265 266 drm_platform_exit(&exynos_drm_driver, pdev); 267 268 return 0; 269 } 270 271 static struct platform_driver exynos_drm_platform_driver = { 272 .probe = exynos_drm_platform_probe, 273 .remove = __devexit_p(exynos_drm_platform_remove), 274 .driver = { 275 .owner = THIS_MODULE, 276 .name = "exynos-drm", 277 }, 278 }; 279 280 static int __init exynos_drm_init(void) 281 { 282 int ret; 283 284 DRM_DEBUG_DRIVER("%s\n", __FILE__); 285 286 #ifdef CONFIG_DRM_EXYNOS_FIMD 287 ret = platform_driver_register(&fimd_driver); 288 if (ret < 0) 289 goto out_fimd; 290 #endif 291 292 #ifdef CONFIG_DRM_EXYNOS_HDMI 293 ret = platform_driver_register(&hdmi_driver); 294 if (ret < 0) 295 goto out_hdmi; 296 ret = platform_driver_register(&mixer_driver); 297 if (ret < 0) 298 goto out_mixer; 299 ret = platform_driver_register(&exynos_drm_common_hdmi_driver); 300 if (ret < 0) 301 goto out_common_hdmi; 302 #endif 303 304 #ifdef CONFIG_DRM_EXYNOS_VIDI 305 ret = platform_driver_register(&vidi_driver); 306 if (ret < 0) 307 goto out_vidi; 308 #endif 309 310 ret = platform_driver_register(&exynos_drm_platform_driver); 311 if (ret < 0) 312 goto out; 313 314 return 0; 315 316 out: 317 #ifdef CONFIG_DRM_EXYNOS_VIDI 318 out_vidi: 319 platform_driver_unregister(&vidi_driver); 320 #endif 321 322 #ifdef CONFIG_DRM_EXYNOS_HDMI 323 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 324 out_common_hdmi: 325 platform_driver_unregister(&mixer_driver); 326 out_mixer: 327 platform_driver_unregister(&hdmi_driver); 328 out_hdmi: 329 #endif 330 331 #ifdef CONFIG_DRM_EXYNOS_FIMD 332 platform_driver_unregister(&fimd_driver); 333 out_fimd: 334 #endif 335 return ret; 336 } 337 338 static void __exit exynos_drm_exit(void) 339 { 340 DRM_DEBUG_DRIVER("%s\n", __FILE__); 341 342 platform_driver_unregister(&exynos_drm_platform_driver); 343 344 #ifdef CONFIG_DRM_EXYNOS_HDMI 345 platform_driver_unregister(&exynos_drm_common_hdmi_driver); 346 platform_driver_unregister(&mixer_driver); 347 platform_driver_unregister(&hdmi_driver); 348 #endif 349 350 #ifdef CONFIG_DRM_EXYNOS_VIDI 351 platform_driver_unregister(&vidi_driver); 352 #endif 353 354 #ifdef CONFIG_DRM_EXYNOS_FIMD 355 platform_driver_unregister(&fimd_driver); 356 #endif 357 } 358 359 module_init(exynos_drm_init); 360 module_exit(exynos_drm_exit); 361 362 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 363 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 364 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 365 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 366 MODULE_LICENSE("GPL"); 367