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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 | /* exynos_drm_encoder.c * * Copyright (c) 2011 Samsung Electronics Co., Ltd. * Authors: * Inki Dae <inki.dae@samsung.com> * Joonyoung Shim <jy0922.shim@samsung.com> * Seung-Woo Kim <sw0312.kim@samsung.com> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #include <drm/drmP.h> #include <drm/drm_crtc_helper.h> #include "exynos_drm_drv.h" #include "exynos_drm_encoder.h" #include "exynos_drm_connector.h" #define to_exynos_encoder(x) container_of(x, struct exynos_drm_encoder,\ drm_encoder) /* * exynos specific encoder structure. * * @drm_encoder: encoder object. * @manager: specific encoder has its own manager to control a hardware * appropriately and we can access a hardware drawing on this manager. * @dpms: store the encoder dpms value. * @updated: indicate whether overlay data updating is needed or not. */ struct exynos_drm_encoder { struct drm_crtc *old_crtc; struct drm_encoder drm_encoder; struct exynos_drm_manager *manager; int dpms; bool updated; }; static void exynos_drm_connector_power(struct drm_encoder *encoder, int mode) { struct drm_device *dev = encoder->dev; struct drm_connector *connector; list_for_each_entry(connector, &dev->mode_config.connector_list, head) { if (exynos_drm_best_encoder(connector) == encoder) { DRM_DEBUG_KMS("connector[%d] dpms[%d]\n", connector->base.id, mode); exynos_drm_display_power(connector, mode); } } } static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode) { struct drm_device *dev = encoder->dev; struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); struct exynos_drm_manager_ops *manager_ops = manager->ops; struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); DRM_DEBUG_KMS("%s, encoder dpms: %d\n", __FILE__, mode); if (exynos_encoder->dpms == mode) { DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n"); return; } mutex_lock(&dev->struct_mutex); switch (mode) { case DRM_MODE_DPMS_ON: if (manager_ops && manager_ops->apply) if (!exynos_encoder->updated) manager_ops->apply(manager->dev); exynos_drm_connector_power(encoder, mode); exynos_encoder->dpms = mode; break; case DRM_MODE_DPMS_STANDBY: case DRM_MODE_DPMS_SUSPEND: case DRM_MODE_DPMS_OFF: exynos_drm_connector_power(encoder, mode); exynos_encoder->dpms = mode; exynos_encoder->updated = false; break; default: DRM_ERROR("unspecified mode %d\n", mode); break; } mutex_unlock(&dev->struct_mutex); } static bool exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { struct drm_device *dev = encoder->dev; struct drm_connector *connector; struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); struct exynos_drm_manager_ops *manager_ops = manager->ops; DRM_DEBUG_KMS("%s\n", __FILE__); list_for_each_entry(connector, &dev->mode_config.connector_list, head) { if (connector->encoder == encoder) if (manager_ops && manager_ops->mode_fixup) manager_ops->mode_fixup(manager->dev, connector, mode, adjusted_mode); } return true; } static void disable_plane_to_crtc(struct drm_device *dev, struct drm_crtc *old_crtc, struct drm_crtc *new_crtc) { struct drm_plane *plane; /* * if old_crtc isn't same as encoder->crtc then it means that * user changed crtc id to another one so the plane to old_crtc * should be disabled and plane->crtc should be set to new_crtc * (encoder->crtc) */ list_for_each_entry(plane, &dev->mode_config.plane_list, head) { if (plane->crtc == old_crtc) { /* * do not change below call order. * * plane->funcs->disable_plane call checks * if encoder->crtc is same as plane->crtc and if same * then overlay_ops->disable callback will be called * to diasble current hw overlay so plane->crtc should * have new_crtc because new_crtc was set to * encoder->crtc in advance. */ plane->crtc = new_crtc; plane->funcs->disable_plane(plane); } } } static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { struct drm_device *dev = encoder->dev; struct drm_connector *connector; struct exynos_drm_manager *manager; struct exynos_drm_manager_ops *manager_ops; DRM_DEBUG_KMS("%s\n", __FILE__); list_for_each_entry(connector, &dev->mode_config.connector_list, head) { if (connector->encoder == encoder) { struct exynos_drm_encoder *exynos_encoder; exynos_encoder = to_exynos_encoder(encoder); if (exynos_encoder->old_crtc != encoder->crtc && exynos_encoder->old_crtc) { /* * disable a plane to old crtc and change * crtc of the plane to new one. */ disable_plane_to_crtc(dev, exynos_encoder->old_crtc, encoder->crtc); } manager = exynos_drm_get_manager(encoder); manager_ops = manager->ops; if (manager_ops && manager_ops->mode_set) manager_ops->mode_set(manager->dev, adjusted_mode); exynos_encoder->old_crtc = encoder->crtc; } } } static void exynos_drm_encoder_prepare(struct drm_encoder *encoder) { DRM_DEBUG_KMS("%s\n", __FILE__); /* drm framework doesn't check NULL. */ } static void exynos_drm_encoder_commit(struct drm_encoder *encoder) { struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); struct exynos_drm_manager *manager = exynos_encoder->manager; struct exynos_drm_manager_ops *manager_ops = manager->ops; DRM_DEBUG_KMS("%s\n", __FILE__); if (manager_ops && manager_ops->commit) manager_ops->commit(manager->dev); /* * this will avoid one issue that overlay data is updated to * real hardware two times. * And this variable will be used to check if the data was * already updated or not by exynos_drm_encoder_dpms function. */ exynos_encoder->updated = true; /* * In case of setcrtc, there is no way to update encoder's dpms * so update it here. */ exynos_encoder->dpms = DRM_MODE_DPMS_ON; } static void exynos_drm_encoder_disable(struct drm_encoder *encoder) { struct drm_plane *plane; struct drm_device *dev = encoder->dev; exynos_drm_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); /* all planes connected to this encoder should be also disabled. */ list_for_each_entry(plane, &dev->mode_config.plane_list, head) { if (plane->crtc == encoder->crtc) plane->funcs->disable_plane(plane); } } static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = { .dpms = exynos_drm_encoder_dpms, .mode_fixup = exynos_drm_encoder_mode_fixup, .mode_set = exynos_drm_encoder_mode_set, .prepare = exynos_drm_encoder_prepare, .commit = exynos_drm_encoder_commit, .disable = exynos_drm_encoder_disable, }; static void exynos_drm_encoder_destroy(struct drm_encoder *encoder) { struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); DRM_DEBUG_KMS("%s\n", __FILE__); exynos_encoder->manager->pipe = -1; drm_encoder_cleanup(encoder); kfree(exynos_encoder); } static struct drm_encoder_funcs exynos_encoder_funcs = { .destroy = exynos_drm_encoder_destroy, }; static unsigned int exynos_drm_encoder_clones(struct drm_encoder *encoder) { struct drm_encoder *clone; struct drm_device *dev = encoder->dev; struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); struct exynos_drm_display_ops *display_ops = exynos_encoder->manager->display_ops; unsigned int clone_mask = 0; int cnt = 0; list_for_each_entry(clone, &dev->mode_config.encoder_list, head) { switch (display_ops->type) { case EXYNOS_DISPLAY_TYPE_LCD: case EXYNOS_DISPLAY_TYPE_HDMI: case EXYNOS_DISPLAY_TYPE_VIDI: clone_mask |= (1 << (cnt++)); break; default: continue; } } return clone_mask; } void exynos_drm_encoder_setup(struct drm_device *dev) { struct drm_encoder *encoder; DRM_DEBUG_KMS("%s\n", __FILE__); list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) encoder->possible_clones = exynos_drm_encoder_clones(encoder); } struct drm_encoder * exynos_drm_encoder_create(struct drm_device *dev, struct exynos_drm_manager *manager, unsigned int possible_crtcs) { struct drm_encoder *encoder; struct exynos_drm_encoder *exynos_encoder; DRM_DEBUG_KMS("%s\n", __FILE__); if (!manager || !possible_crtcs) return NULL; if (!manager->dev) return NULL; exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL); if (!exynos_encoder) { DRM_ERROR("failed to allocate encoder\n"); return NULL; } exynos_encoder->dpms = DRM_MODE_DPMS_OFF; exynos_encoder->manager = manager; encoder = &exynos_encoder->drm_encoder; encoder->possible_crtcs = possible_crtcs; DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); drm_encoder_init(dev, encoder, &exynos_encoder_funcs, DRM_MODE_ENCODER_TMDS); drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs); DRM_DEBUG_KMS("encoder has been created\n"); return encoder; } struct exynos_drm_manager *exynos_drm_get_manager(struct drm_encoder *encoder) { return to_exynos_encoder(encoder)->manager; } void exynos_drm_fn_encoder(struct drm_crtc *crtc, void *data, void (*fn)(struct drm_encoder *, void *)) { struct drm_device *dev = crtc->dev; struct drm_encoder *encoder; struct exynos_drm_private *private = dev->dev_private; struct exynos_drm_manager *manager; list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { /* * if crtc is detached from encoder, check pipe, * otherwise check crtc attached to encoder */ if (!encoder->crtc) { manager = to_exynos_encoder(encoder)->manager; if (manager->pipe < 0 || private->crtc[manager->pipe] != crtc) continue; } else { if (encoder->crtc != crtc) continue; } fn(encoder, data); } } void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data) { struct exynos_drm_manager *manager = to_exynos_encoder(encoder)->manager; struct exynos_drm_manager_ops *manager_ops = manager->ops; int crtc = *(int *)data; if (manager->pipe != crtc) return; if (manager_ops->enable_vblank) manager_ops->enable_vblank(manager->dev); } void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data) { struct exynos_drm_manager *manager = to_exynos_encoder(encoder)->manager; struct exynos_drm_manager_ops *manager_ops = manager->ops; int crtc = *(int *)data; if (manager->pipe != crtc) return; if (manager_ops->disable_vblank) manager_ops->disable_vblank(manager->dev); } void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data) { struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); struct exynos_drm_manager *manager = exynos_encoder->manager; struct exynos_drm_manager_ops *manager_ops = manager->ops; int mode = *(int *)data; DRM_DEBUG_KMS("%s\n", __FILE__); if (manager_ops && manager_ops->dpms) manager_ops->dpms(manager->dev, mode); /* * if this condition is ok then it means that the crtc is already * detached from encoder and last function for detaching is properly * done, so clear pipe from manager to prevent repeated call. */ if (mode > DRM_MODE_DPMS_ON) { if (!encoder->crtc) manager->pipe = -1; } } void exynos_drm_encoder_crtc_pipe(struct drm_encoder *encoder, void *data) { struct exynos_drm_manager *manager = to_exynos_encoder(encoder)->manager; int pipe = *(int *)data; DRM_DEBUG_KMS("%s\n", __FILE__); /* * when crtc is detached from encoder, this pipe is used * to select manager operation */ manager->pipe = pipe; } void exynos_drm_encoder_plane_mode_set(struct drm_encoder *encoder, void *data) { struct exynos_drm_manager *manager = to_exynos_encoder(encoder)->manager; struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; struct exynos_drm_overlay *overlay = data; DRM_DEBUG_KMS("%s\n", __FILE__); if (overlay_ops && overlay_ops->mode_set) overlay_ops->mode_set(manager->dev, overlay); } void exynos_drm_encoder_plane_commit(struct drm_encoder *encoder, void *data) { struct exynos_drm_manager *manager = to_exynos_encoder(encoder)->manager; struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; int zpos = DEFAULT_ZPOS; DRM_DEBUG_KMS("%s\n", __FILE__); if (data) zpos = *(int *)data; if (overlay_ops && overlay_ops->commit) overlay_ops->commit(manager->dev, zpos); } void exynos_drm_encoder_plane_enable(struct drm_encoder *encoder, void *data) { struct exynos_drm_manager *manager = to_exynos_encoder(encoder)->manager; struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; int zpos = DEFAULT_ZPOS; DRM_DEBUG_KMS("%s\n", __FILE__); if (data) zpos = *(int *)data; if (overlay_ops && overlay_ops->enable) overlay_ops->enable(manager->dev, zpos); } void exynos_drm_encoder_plane_disable(struct drm_encoder *encoder, void *data) { struct exynos_drm_manager *manager = to_exynos_encoder(encoder)->manager; struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; int zpos = DEFAULT_ZPOS; DRM_DEBUG_KMS("%s\n", __FILE__); if (data) zpos = *(int *)data; if (overlay_ops && overlay_ops->disable) overlay_ops->disable(manager->dev, zpos); /* * wait for vblank interrupt * - this makes sure that hardware overlay is disabled to avoid * for the dma accesses to memory after gem buffer was released * because the setting for disabling the overlay will be updated * at vsync. */ if (overlay_ops && overlay_ops->wait_for_vblank) overlay_ops->wait_for_vblank(manager->dev); } |