1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2014-2018, The Linux Foundation. All rights reserved. 4 * Copyright (C) 2013 Red Hat 5 * Author: Rob Clark <robdclark@gmail.com> 6 */ 7 8 #define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__ 9 10 #include <linux/debugfs.h> 11 #include <linux/dma-buf.h> 12 #include <linux/of_irq.h> 13 14 #include <drm/drm_crtc.h> 15 #include <drm/drm_file.h> 16 17 #include "msm_drv.h" 18 #include "msm_mmu.h" 19 #include "msm_gem.h" 20 21 #include "dpu_kms.h" 22 #include "dpu_core_irq.h" 23 #include "dpu_formats.h" 24 #include "dpu_hw_vbif.h" 25 #include "dpu_vbif.h" 26 #include "dpu_encoder.h" 27 #include "dpu_plane.h" 28 #include "dpu_crtc.h" 29 30 #define CREATE_TRACE_POINTS 31 #include "dpu_trace.h" 32 33 /* 34 * To enable overall DRM driver logging 35 * # echo 0x2 > /sys/module/drm/parameters/debug 36 * 37 * To enable DRM driver h/w logging 38 * # echo <mask> > /sys/kernel/debug/dri/0/debug/hw_log_mask 39 * 40 * See dpu_hw_mdss.h for h/w logging mask definitions (search for DPU_DBG_MASK_) 41 */ 42 #define DPU_DEBUGFS_DIR "msm_dpu" 43 #define DPU_DEBUGFS_HWMASKNAME "hw_log_mask" 44 45 static int dpu_kms_hw_init(struct msm_kms *kms); 46 static void _dpu_kms_mmu_destroy(struct dpu_kms *dpu_kms); 47 48 static unsigned long dpu_iomap_size(struct platform_device *pdev, 49 const char *name) 50 { 51 struct resource *res; 52 53 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); 54 if (!res) { 55 DRM_ERROR("failed to get memory resource: %s\n", name); 56 return 0; 57 } 58 59 return resource_size(res); 60 } 61 62 #ifdef CONFIG_DEBUG_FS 63 static int _dpu_danger_signal_status(struct seq_file *s, 64 bool danger_status) 65 { 66 struct dpu_kms *kms = (struct dpu_kms *)s->private; 67 struct dpu_danger_safe_status status; 68 int i; 69 70 if (!kms->hw_mdp) { 71 DPU_ERROR("invalid arg(s)\n"); 72 return 0; 73 } 74 75 memset(&status, 0, sizeof(struct dpu_danger_safe_status)); 76 77 pm_runtime_get_sync(&kms->pdev->dev); 78 if (danger_status) { 79 seq_puts(s, "\nDanger signal status:\n"); 80 if (kms->hw_mdp->ops.get_danger_status) 81 kms->hw_mdp->ops.get_danger_status(kms->hw_mdp, 82 &status); 83 } else { 84 seq_puts(s, "\nSafe signal status:\n"); 85 if (kms->hw_mdp->ops.get_danger_status) 86 kms->hw_mdp->ops.get_danger_status(kms->hw_mdp, 87 &status); 88 } 89 pm_runtime_put_sync(&kms->pdev->dev); 90 91 seq_printf(s, "MDP : 0x%x\n", status.mdp); 92 93 for (i = SSPP_VIG0; i < SSPP_MAX; i++) 94 seq_printf(s, "SSPP%d : 0x%x \t", i - SSPP_VIG0, 95 status.sspp[i]); 96 seq_puts(s, "\n"); 97 98 return 0; 99 } 100 101 #define DEFINE_DPU_DEBUGFS_SEQ_FOPS(__prefix) \ 102 static int __prefix ## _open(struct inode *inode, struct file *file) \ 103 { \ 104 return single_open(file, __prefix ## _show, inode->i_private); \ 105 } \ 106 static const struct file_operations __prefix ## _fops = { \ 107 .owner = THIS_MODULE, \ 108 .open = __prefix ## _open, \ 109 .release = single_release, \ 110 .read = seq_read, \ 111 .llseek = seq_lseek, \ 112 } 113 114 static int dpu_debugfs_danger_stats_show(struct seq_file *s, void *v) 115 { 116 return _dpu_danger_signal_status(s, true); 117 } 118 DEFINE_DPU_DEBUGFS_SEQ_FOPS(dpu_debugfs_danger_stats); 119 120 static int dpu_debugfs_safe_stats_show(struct seq_file *s, void *v) 121 { 122 return _dpu_danger_signal_status(s, false); 123 } 124 DEFINE_DPU_DEBUGFS_SEQ_FOPS(dpu_debugfs_safe_stats); 125 126 static void dpu_debugfs_danger_init(struct dpu_kms *dpu_kms, 127 struct dentry *parent) 128 { 129 struct dentry *entry = debugfs_create_dir("danger", parent); 130 131 debugfs_create_file("danger_status", 0600, entry, 132 dpu_kms, &dpu_debugfs_danger_stats_fops); 133 debugfs_create_file("safe_status", 0600, entry, 134 dpu_kms, &dpu_debugfs_safe_stats_fops); 135 } 136 137 static int _dpu_debugfs_show_regset32(struct seq_file *s, void *data) 138 { 139 struct dpu_debugfs_regset32 *regset = s->private; 140 struct dpu_kms *dpu_kms = regset->dpu_kms; 141 struct drm_device *dev; 142 struct msm_drm_private *priv; 143 void __iomem *base; 144 uint32_t i, addr; 145 146 if (!dpu_kms->mmio) 147 return 0; 148 149 dev = dpu_kms->dev; 150 priv = dev->dev_private; 151 base = dpu_kms->mmio + regset->offset; 152 153 /* insert padding spaces, if needed */ 154 if (regset->offset & 0xF) { 155 seq_printf(s, "[%x]", regset->offset & ~0xF); 156 for (i = 0; i < (regset->offset & 0xF); i += 4) 157 seq_puts(s, " "); 158 } 159 160 pm_runtime_get_sync(&dpu_kms->pdev->dev); 161 162 /* main register output */ 163 for (i = 0; i < regset->blk_len; i += 4) { 164 addr = regset->offset + i; 165 if ((addr & 0xF) == 0x0) 166 seq_printf(s, i ? "\n[%x]" : "[%x]", addr); 167 seq_printf(s, " %08x", readl_relaxed(base + i)); 168 } 169 seq_puts(s, "\n"); 170 pm_runtime_put_sync(&dpu_kms->pdev->dev); 171 172 return 0; 173 } 174 175 static int dpu_debugfs_open_regset32(struct inode *inode, 176 struct file *file) 177 { 178 return single_open(file, _dpu_debugfs_show_regset32, inode->i_private); 179 } 180 181 static const struct file_operations dpu_fops_regset32 = { 182 .open = dpu_debugfs_open_regset32, 183 .read = seq_read, 184 .llseek = seq_lseek, 185 .release = single_release, 186 }; 187 188 void dpu_debugfs_setup_regset32(struct dpu_debugfs_regset32 *regset, 189 uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms) 190 { 191 if (regset) { 192 regset->offset = offset; 193 regset->blk_len = length; 194 regset->dpu_kms = dpu_kms; 195 } 196 } 197 198 void dpu_debugfs_create_regset32(const char *name, umode_t mode, 199 void *parent, struct dpu_debugfs_regset32 *regset) 200 { 201 if (!name || !regset || !regset->dpu_kms || !regset->blk_len) 202 return; 203 204 /* make sure offset is a multiple of 4 */ 205 regset->offset = round_down(regset->offset, 4); 206 207 debugfs_create_file(name, mode, parent, regset, &dpu_fops_regset32); 208 } 209 210 static int dpu_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor) 211 { 212 struct dpu_kms *dpu_kms = to_dpu_kms(kms); 213 void *p = dpu_hw_util_get_log_mask_ptr(); 214 struct dentry *entry; 215 216 if (!p) 217 return -EINVAL; 218 219 entry = debugfs_create_dir("debug", minor->debugfs_root); 220 221 debugfs_create_x32(DPU_DEBUGFS_HWMASKNAME, 0600, entry, p); 222 223 dpu_debugfs_danger_init(dpu_kms, entry); 224 dpu_debugfs_vbif_init(dpu_kms, entry); 225 dpu_debugfs_core_irq_init(dpu_kms, entry); 226 227 return dpu_core_perf_debugfs_init(dpu_kms, entry); 228 } 229 #endif 230 231 static int dpu_kms_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) 232 { 233 return dpu_crtc_vblank(crtc, true); 234 } 235 236 static void dpu_kms_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) 237 { 238 dpu_crtc_vblank(crtc, false); 239 } 240 241 static void dpu_kms_enable_commit(struct msm_kms *kms) 242 { 243 struct dpu_kms *dpu_kms = to_dpu_kms(kms); 244 pm_runtime_get_sync(&dpu_kms->pdev->dev); 245 } 246 247 static void dpu_kms_disable_commit(struct msm_kms *kms) 248 { 249 struct dpu_kms *dpu_kms = to_dpu_kms(kms); 250 pm_runtime_put_sync(&dpu_kms->pdev->dev); 251 } 252 253 static ktime_t dpu_kms_vsync_time(struct msm_kms *kms, struct drm_crtc *crtc) 254 { 255 struct drm_encoder *encoder; 256 257 drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask) { 258 ktime_t vsync_time; 259 260 if (dpu_encoder_vsync_time(encoder, &vsync_time) == 0) 261 return vsync_time; 262 } 263 264 return ktime_get(); 265 } 266 267 static void dpu_kms_prepare_commit(struct msm_kms *kms, 268 struct drm_atomic_state *state) 269 { 270 struct dpu_kms *dpu_kms; 271 struct drm_device *dev; 272 struct drm_crtc *crtc; 273 struct drm_crtc_state *crtc_state; 274 struct drm_encoder *encoder; 275 int i; 276 277 if (!kms) 278 return; 279 dpu_kms = to_dpu_kms(kms); 280 dev = dpu_kms->dev; 281 282 /* Call prepare_commit for all affected encoders */ 283 for_each_new_crtc_in_state(state, crtc, crtc_state, i) { 284 drm_for_each_encoder_mask(encoder, crtc->dev, 285 crtc_state->encoder_mask) { 286 dpu_encoder_prepare_commit(encoder); 287 } 288 } 289 } 290 291 static void dpu_kms_flush_commit(struct msm_kms *kms, unsigned crtc_mask) 292 { 293 struct dpu_kms *dpu_kms = to_dpu_kms(kms); 294 struct drm_crtc *crtc; 295 296 for_each_crtc_mask(dpu_kms->dev, crtc, crtc_mask) { 297 if (!crtc->state->active) 298 continue; 299 300 trace_dpu_kms_commit(DRMID(crtc)); 301 dpu_crtc_commit_kickoff(crtc); 302 } 303 } 304 305 /* 306 * Override the encoder enable since we need to setup the inline rotator and do 307 * some crtc magic before enabling any bridge that might be present. 308 */ 309 void dpu_kms_encoder_enable(struct drm_encoder *encoder) 310 { 311 const struct drm_encoder_helper_funcs *funcs = encoder->helper_private; 312 struct drm_device *dev = encoder->dev; 313 struct drm_crtc *crtc; 314 315 /* Forward this enable call to the commit hook */ 316 if (funcs && funcs->commit) 317 funcs->commit(encoder); 318 319 drm_for_each_crtc(crtc, dev) { 320 if (!(crtc->state->encoder_mask & drm_encoder_mask(encoder))) 321 continue; 322 323 trace_dpu_kms_enc_enable(DRMID(crtc)); 324 } 325 } 326 327 static void dpu_kms_complete_commit(struct msm_kms *kms, unsigned crtc_mask) 328 { 329 struct dpu_kms *dpu_kms = to_dpu_kms(kms); 330 struct drm_crtc *crtc; 331 332 DPU_ATRACE_BEGIN("kms_complete_commit"); 333 334 for_each_crtc_mask(dpu_kms->dev, crtc, crtc_mask) 335 dpu_crtc_complete_commit(crtc); 336 337 DPU_ATRACE_END("kms_complete_commit"); 338 } 339 340 static void dpu_kms_wait_for_commit_done(struct msm_kms *kms, 341 struct drm_crtc *crtc) 342 { 343 struct drm_encoder *encoder; 344 struct drm_device *dev; 345 int ret; 346 347 if (!kms || !crtc || !crtc->state) { 348 DPU_ERROR("invalid params\n"); 349 return; 350 } 351 352 dev = crtc->dev; 353 354 if (!crtc->state->enable) { 355 DPU_DEBUG("[crtc:%d] not enable\n", crtc->base.id); 356 return; 357 } 358 359 if (!crtc->state->active) { 360 DPU_DEBUG("[crtc:%d] not active\n", crtc->base.id); 361 return; 362 } 363 364 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 365 if (encoder->crtc != crtc) 366 continue; 367 /* 368 * Wait for post-flush if necessary to delay before 369 * plane_cleanup. For example, wait for vsync in case of video 370 * mode panels. This may be a no-op for command mode panels. 371 */ 372 trace_dpu_kms_wait_for_commit_done(DRMID(crtc)); 373 ret = dpu_encoder_wait_for_event(encoder, MSM_ENC_COMMIT_DONE); 374 if (ret && ret != -EWOULDBLOCK) { 375 DPU_ERROR("wait for commit done returned %d\n", ret); 376 break; 377 } 378 } 379 } 380 381 static void dpu_kms_wait_flush(struct msm_kms *kms, unsigned crtc_mask) 382 { 383 struct dpu_kms *dpu_kms = to_dpu_kms(kms); 384 struct drm_crtc *crtc; 385 386 for_each_crtc_mask(dpu_kms->dev, crtc, crtc_mask) 387 dpu_kms_wait_for_commit_done(kms, crtc); 388 } 389 390 static int _dpu_kms_initialize_dsi(struct drm_device *dev, 391 struct msm_drm_private *priv, 392 struct dpu_kms *dpu_kms) 393 { 394 struct drm_encoder *encoder = NULL; 395 int i, rc = 0; 396 397 if (!(priv->dsi[0] || priv->dsi[1])) 398 return rc; 399 400 /*TODO: Support two independent DSI connectors */ 401 encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_DSI); 402 if (IS_ERR(encoder)) { 403 DPU_ERROR("encoder init failed for dsi display\n"); 404 return PTR_ERR(encoder); 405 } 406 407 priv->encoders[priv->num_encoders++] = encoder; 408 409 for (i = 0; i < ARRAY_SIZE(priv->dsi); i++) { 410 if (!priv->dsi[i]) 411 continue; 412 413 rc = msm_dsi_modeset_init(priv->dsi[i], dev, encoder); 414 if (rc) { 415 DPU_ERROR("modeset_init failed for dsi[%d], rc = %d\n", 416 i, rc); 417 break; 418 } 419 } 420 421 return rc; 422 } 423 424 /** 425 * _dpu_kms_setup_displays - create encoders, bridges and connectors 426 * for underlying displays 427 * @dev: Pointer to drm device structure 428 * @priv: Pointer to private drm device data 429 * @dpu_kms: Pointer to dpu kms structure 430 * Returns: Zero on success 431 */ 432 static int _dpu_kms_setup_displays(struct drm_device *dev, 433 struct msm_drm_private *priv, 434 struct dpu_kms *dpu_kms) 435 { 436 /** 437 * Extend this function to initialize other 438 * types of displays 439 */ 440 441 return _dpu_kms_initialize_dsi(dev, priv, dpu_kms); 442 } 443 444 static void _dpu_kms_drm_obj_destroy(struct dpu_kms *dpu_kms) 445 { 446 struct msm_drm_private *priv; 447 int i; 448 449 priv = dpu_kms->dev->dev_private; 450 451 for (i = 0; i < priv->num_crtcs; i++) 452 priv->crtcs[i]->funcs->destroy(priv->crtcs[i]); 453 priv->num_crtcs = 0; 454 455 for (i = 0; i < priv->num_planes; i++) 456 priv->planes[i]->funcs->destroy(priv->planes[i]); 457 priv->num_planes = 0; 458 459 for (i = 0; i < priv->num_connectors; i++) 460 priv->connectors[i]->funcs->destroy(priv->connectors[i]); 461 priv->num_connectors = 0; 462 463 for (i = 0; i < priv->num_encoders; i++) 464 priv->encoders[i]->funcs->destroy(priv->encoders[i]); 465 priv->num_encoders = 0; 466 } 467 468 static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms) 469 { 470 struct drm_device *dev; 471 struct drm_plane *primary_planes[MAX_PLANES], *plane; 472 struct drm_plane *cursor_planes[MAX_PLANES] = { NULL }; 473 struct drm_crtc *crtc; 474 475 struct msm_drm_private *priv; 476 struct dpu_mdss_cfg *catalog; 477 478 int primary_planes_idx = 0, cursor_planes_idx = 0, i, ret; 479 int max_crtc_count; 480 dev = dpu_kms->dev; 481 priv = dev->dev_private; 482 catalog = dpu_kms->catalog; 483 484 /* 485 * Create encoder and query display drivers to create 486 * bridges and connectors 487 */ 488 ret = _dpu_kms_setup_displays(dev, priv, dpu_kms); 489 if (ret) 490 goto fail; 491 492 max_crtc_count = min(catalog->mixer_count, priv->num_encoders); 493 494 /* Create the planes, keeping track of one primary/cursor per crtc */ 495 for (i = 0; i < catalog->sspp_count; i++) { 496 enum drm_plane_type type; 497 498 if ((catalog->sspp[i].features & BIT(DPU_SSPP_CURSOR)) 499 && cursor_planes_idx < max_crtc_count) 500 type = DRM_PLANE_TYPE_CURSOR; 501 else if (primary_planes_idx < max_crtc_count) 502 type = DRM_PLANE_TYPE_PRIMARY; 503 else 504 type = DRM_PLANE_TYPE_OVERLAY; 505 506 DPU_DEBUG("Create plane type %d with features %lx (cur %lx)\n", 507 type, catalog->sspp[i].features, 508 catalog->sspp[i].features & BIT(DPU_SSPP_CURSOR)); 509 510 plane = dpu_plane_init(dev, catalog->sspp[i].id, type, 511 (1UL << max_crtc_count) - 1, 0); 512 if (IS_ERR(plane)) { 513 DPU_ERROR("dpu_plane_init failed\n"); 514 ret = PTR_ERR(plane); 515 goto fail; 516 } 517 priv->planes[priv->num_planes++] = plane; 518 519 if (type == DRM_PLANE_TYPE_CURSOR) 520 cursor_planes[cursor_planes_idx++] = plane; 521 else if (type == DRM_PLANE_TYPE_PRIMARY) 522 primary_planes[primary_planes_idx++] = plane; 523 } 524 525 max_crtc_count = min(max_crtc_count, primary_planes_idx); 526 527 /* Create one CRTC per encoder */ 528 for (i = 0; i < max_crtc_count; i++) { 529 crtc = dpu_crtc_init(dev, primary_planes[i], cursor_planes[i]); 530 if (IS_ERR(crtc)) { 531 ret = PTR_ERR(crtc); 532 goto fail; 533 } 534 priv->crtcs[priv->num_crtcs++] = crtc; 535 } 536 537 /* All CRTCs are compatible with all encoders */ 538 for (i = 0; i < priv->num_encoders; i++) 539 priv->encoders[i]->possible_crtcs = (1 << priv->num_crtcs) - 1; 540 541 return 0; 542 fail: 543 _dpu_kms_drm_obj_destroy(dpu_kms); 544 return ret; 545 } 546 547 static long dpu_kms_round_pixclk(struct msm_kms *kms, unsigned long rate, 548 struct drm_encoder *encoder) 549 { 550 return rate; 551 } 552 553 static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms) 554 { 555 struct drm_device *dev; 556 int i; 557 558 dev = dpu_kms->dev; 559 560 if (dpu_kms->hw_intr) 561 dpu_hw_intr_destroy(dpu_kms->hw_intr); 562 dpu_kms->hw_intr = NULL; 563 564 /* safe to call these more than once during shutdown */ 565 _dpu_kms_mmu_destroy(dpu_kms); 566 567 if (dpu_kms->catalog) { 568 for (i = 0; i < dpu_kms->catalog->vbif_count; i++) { 569 u32 vbif_idx = dpu_kms->catalog->vbif[i].id; 570 571 if ((vbif_idx < VBIF_MAX) && dpu_kms->hw_vbif[vbif_idx]) 572 dpu_hw_vbif_destroy(dpu_kms->hw_vbif[vbif_idx]); 573 } 574 } 575 576 if (dpu_kms->rm_init) 577 dpu_rm_destroy(&dpu_kms->rm); 578 dpu_kms->rm_init = false; 579 580 if (dpu_kms->catalog) 581 dpu_hw_catalog_deinit(dpu_kms->catalog); 582 dpu_kms->catalog = NULL; 583 584 if (dpu_kms->vbif[VBIF_NRT]) 585 devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->vbif[VBIF_NRT]); 586 dpu_kms->vbif[VBIF_NRT] = NULL; 587 588 if (dpu_kms->vbif[VBIF_RT]) 589 devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->vbif[VBIF_RT]); 590 dpu_kms->vbif[VBIF_RT] = NULL; 591 592 if (dpu_kms->hw_mdp) 593 dpu_hw_mdp_destroy(dpu_kms->hw_mdp); 594 dpu_kms->hw_mdp = NULL; 595 596 if (dpu_kms->mmio) 597 devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->mmio); 598 dpu_kms->mmio = NULL; 599 } 600 601 static void dpu_kms_destroy(struct msm_kms *kms) 602 { 603 struct dpu_kms *dpu_kms; 604 605 if (!kms) { 606 DPU_ERROR("invalid kms\n"); 607 return; 608 } 609 610 dpu_kms = to_dpu_kms(kms); 611 612 _dpu_kms_hw_destroy(dpu_kms); 613 } 614 615 static void _dpu_kms_set_encoder_mode(struct msm_kms *kms, 616 struct drm_encoder *encoder, 617 bool cmd_mode) 618 { 619 struct msm_display_info info; 620 struct msm_drm_private *priv = encoder->dev->dev_private; 621 int i, rc = 0; 622 623 memset(&info, 0, sizeof(info)); 624 625 info.intf_type = encoder->encoder_type; 626 info.capabilities = cmd_mode ? MSM_DISPLAY_CAP_CMD_MODE : 627 MSM_DISPLAY_CAP_VID_MODE; 628 629 /* TODO: No support for DSI swap */ 630 for (i = 0; i < ARRAY_SIZE(priv->dsi); i++) { 631 if (priv->dsi[i]) { 632 info.h_tile_instance[info.num_of_h_tiles] = i; 633 info.num_of_h_tiles++; 634 } 635 } 636 637 rc = dpu_encoder_setup(encoder->dev, encoder, &info); 638 if (rc) 639 DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n", 640 encoder->base.id, rc); 641 } 642 643 static irqreturn_t dpu_irq(struct msm_kms *kms) 644 { 645 struct dpu_kms *dpu_kms = to_dpu_kms(kms); 646 647 return dpu_core_irq(dpu_kms); 648 } 649 650 static void dpu_irq_preinstall(struct msm_kms *kms) 651 { 652 struct dpu_kms *dpu_kms = to_dpu_kms(kms); 653 654 dpu_core_irq_preinstall(dpu_kms); 655 } 656 657 static void dpu_irq_uninstall(struct msm_kms *kms) 658 { 659 struct dpu_kms *dpu_kms = to_dpu_kms(kms); 660 661 dpu_core_irq_uninstall(dpu_kms); 662 } 663 664 static const struct msm_kms_funcs kms_funcs = { 665 .hw_init = dpu_kms_hw_init, 666 .irq_preinstall = dpu_irq_preinstall, 667 .irq_uninstall = dpu_irq_uninstall, 668 .irq = dpu_irq, 669 .enable_commit = dpu_kms_enable_commit, 670 .disable_commit = dpu_kms_disable_commit, 671 .vsync_time = dpu_kms_vsync_time, 672 .prepare_commit = dpu_kms_prepare_commit, 673 .flush_commit = dpu_kms_flush_commit, 674 .wait_flush = dpu_kms_wait_flush, 675 .complete_commit = dpu_kms_complete_commit, 676 .enable_vblank = dpu_kms_enable_vblank, 677 .disable_vblank = dpu_kms_disable_vblank, 678 .check_modified_format = dpu_format_check_modified_format, 679 .get_format = dpu_get_msm_format, 680 .round_pixclk = dpu_kms_round_pixclk, 681 .destroy = dpu_kms_destroy, 682 .set_encoder_mode = _dpu_kms_set_encoder_mode, 683 #ifdef CONFIG_DEBUG_FS 684 .debugfs_init = dpu_kms_debugfs_init, 685 #endif 686 }; 687 688 static void _dpu_kms_mmu_destroy(struct dpu_kms *dpu_kms) 689 { 690 struct msm_mmu *mmu; 691 692 if (!dpu_kms->base.aspace) 693 return; 694 695 mmu = dpu_kms->base.aspace->mmu; 696 697 mmu->funcs->detach(mmu); 698 msm_gem_address_space_put(dpu_kms->base.aspace); 699 700 dpu_kms->base.aspace = NULL; 701 } 702 703 static int _dpu_kms_mmu_init(struct dpu_kms *dpu_kms) 704 { 705 struct iommu_domain *domain; 706 struct msm_gem_address_space *aspace; 707 int ret; 708 709 domain = iommu_domain_alloc(&platform_bus_type); 710 if (!domain) 711 return 0; 712 713 domain->geometry.aperture_start = 0x1000; 714 domain->geometry.aperture_end = 0xffffffff; 715 716 aspace = msm_gem_address_space_create(dpu_kms->dev->dev, 717 domain, "dpu1"); 718 if (IS_ERR(aspace)) { 719 iommu_domain_free(domain); 720 return PTR_ERR(aspace); 721 } 722 723 ret = aspace->mmu->funcs->attach(aspace->mmu); 724 if (ret) { 725 DPU_ERROR("failed to attach iommu %d\n", ret); 726 msm_gem_address_space_put(aspace); 727 return ret; 728 } 729 730 dpu_kms->base.aspace = aspace; 731 return 0; 732 } 733 734 static struct dss_clk *_dpu_kms_get_clk(struct dpu_kms *dpu_kms, 735 char *clock_name) 736 { 737 struct dss_module_power *mp = &dpu_kms->mp; 738 int i; 739 740 for (i = 0; i < mp->num_clk; i++) { 741 if (!strcmp(mp->clk_config[i].clk_name, clock_name)) 742 return &mp->clk_config[i]; 743 } 744 745 return NULL; 746 } 747 748 u64 dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name) 749 { 750 struct dss_clk *clk; 751 752 clk = _dpu_kms_get_clk(dpu_kms, clock_name); 753 if (!clk) 754 return -EINVAL; 755 756 return clk_get_rate(clk->clk); 757 } 758 759 static int dpu_kms_hw_init(struct msm_kms *kms) 760 { 761 struct dpu_kms *dpu_kms; 762 struct drm_device *dev; 763 struct msm_drm_private *priv; 764 int i, rc = -EINVAL; 765 766 if (!kms) { 767 DPU_ERROR("invalid kms\n"); 768 return rc; 769 } 770 771 dpu_kms = to_dpu_kms(kms); 772 dev = dpu_kms->dev; 773 priv = dev->dev_private; 774 775 atomic_set(&dpu_kms->bandwidth_ref, 0); 776 777 dpu_kms->mmio = msm_ioremap(dpu_kms->pdev, "mdp", "mdp"); 778 if (IS_ERR(dpu_kms->mmio)) { 779 rc = PTR_ERR(dpu_kms->mmio); 780 DPU_ERROR("mdp register memory map failed: %d\n", rc); 781 dpu_kms->mmio = NULL; 782 goto error; 783 } 784 DRM_DEBUG("mapped dpu address space @%pK\n", dpu_kms->mmio); 785 dpu_kms->mmio_len = dpu_iomap_size(dpu_kms->pdev, "mdp"); 786 787 dpu_kms->vbif[VBIF_RT] = msm_ioremap(dpu_kms->pdev, "vbif", "vbif"); 788 if (IS_ERR(dpu_kms->vbif[VBIF_RT])) { 789 rc = PTR_ERR(dpu_kms->vbif[VBIF_RT]); 790 DPU_ERROR("vbif register memory map failed: %d\n", rc); 791 dpu_kms->vbif[VBIF_RT] = NULL; 792 goto error; 793 } 794 dpu_kms->vbif_len[VBIF_RT] = dpu_iomap_size(dpu_kms->pdev, "vbif"); 795 dpu_kms->vbif[VBIF_NRT] = msm_ioremap(dpu_kms->pdev, "vbif_nrt", "vbif_nrt"); 796 if (IS_ERR(dpu_kms->vbif[VBIF_NRT])) { 797 dpu_kms->vbif[VBIF_NRT] = NULL; 798 DPU_DEBUG("VBIF NRT is not defined"); 799 } else { 800 dpu_kms->vbif_len[VBIF_NRT] = dpu_iomap_size(dpu_kms->pdev, 801 "vbif_nrt"); 802 } 803 804 dpu_kms->reg_dma = msm_ioremap(dpu_kms->pdev, "regdma", "regdma"); 805 if (IS_ERR(dpu_kms->reg_dma)) { 806 dpu_kms->reg_dma = NULL; 807 DPU_DEBUG("REG_DMA is not defined"); 808 } else { 809 dpu_kms->reg_dma_len = dpu_iomap_size(dpu_kms->pdev, "regdma"); 810 } 811 812 pm_runtime_get_sync(&dpu_kms->pdev->dev); 813 814 dpu_kms->core_rev = readl_relaxed(dpu_kms->mmio + 0x0); 815 816 pr_info("dpu hardware revision:0x%x\n", dpu_kms->core_rev); 817 818 dpu_kms->catalog = dpu_hw_catalog_init(dpu_kms->core_rev); 819 if (IS_ERR_OR_NULL(dpu_kms->catalog)) { 820 rc = PTR_ERR(dpu_kms->catalog); 821 if (!dpu_kms->catalog) 822 rc = -EINVAL; 823 DPU_ERROR("catalog init failed: %d\n", rc); 824 dpu_kms->catalog = NULL; 825 goto power_error; 826 } 827 828 /* 829 * Now we need to read the HW catalog and initialize resources such as 830 * clocks, regulators, GDSC/MMAGIC, ioremap the register ranges etc 831 */ 832 rc = _dpu_kms_mmu_init(dpu_kms); 833 if (rc) { 834 DPU_ERROR("dpu_kms_mmu_init failed: %d\n", rc); 835 goto power_error; 836 } 837 838 rc = dpu_rm_init(&dpu_kms->rm, dpu_kms->catalog, dpu_kms->mmio); 839 if (rc) { 840 DPU_ERROR("rm init failed: %d\n", rc); 841 goto power_error; 842 } 843 844 dpu_kms->rm_init = true; 845 846 dpu_kms->hw_mdp = dpu_hw_mdptop_init(MDP_TOP, dpu_kms->mmio, 847 dpu_kms->catalog); 848 if (IS_ERR(dpu_kms->hw_mdp)) { 849 rc = PTR_ERR(dpu_kms->hw_mdp); 850 DPU_ERROR("failed to get hw_mdp: %d\n", rc); 851 dpu_kms->hw_mdp = NULL; 852 goto power_error; 853 } 854 855 for (i = 0; i < dpu_kms->catalog->vbif_count; i++) { 856 u32 vbif_idx = dpu_kms->catalog->vbif[i].id; 857 858 dpu_kms->hw_vbif[i] = dpu_hw_vbif_init(vbif_idx, 859 dpu_kms->vbif[vbif_idx], dpu_kms->catalog); 860 if (IS_ERR_OR_NULL(dpu_kms->hw_vbif[vbif_idx])) { 861 rc = PTR_ERR(dpu_kms->hw_vbif[vbif_idx]); 862 if (!dpu_kms->hw_vbif[vbif_idx]) 863 rc = -EINVAL; 864 DPU_ERROR("failed to init vbif %d: %d\n", vbif_idx, rc); 865 dpu_kms->hw_vbif[vbif_idx] = NULL; 866 goto power_error; 867 } 868 } 869 870 rc = dpu_core_perf_init(&dpu_kms->perf, dev, dpu_kms->catalog, 871 _dpu_kms_get_clk(dpu_kms, "core")); 872 if (rc) { 873 DPU_ERROR("failed to init perf %d\n", rc); 874 goto perf_err; 875 } 876 877 dpu_kms->hw_intr = dpu_hw_intr_init(dpu_kms->mmio, dpu_kms->catalog); 878 if (IS_ERR_OR_NULL(dpu_kms->hw_intr)) { 879 rc = PTR_ERR(dpu_kms->hw_intr); 880 DPU_ERROR("hw_intr init failed: %d\n", rc); 881 dpu_kms->hw_intr = NULL; 882 goto hw_intr_init_err; 883 } 884 885 dev->mode_config.min_width = 0; 886 dev->mode_config.min_height = 0; 887 888 /* 889 * max crtc width is equal to the max mixer width * 2 and max height is 890 * is 4K 891 */ 892 dev->mode_config.max_width = 893 dpu_kms->catalog->caps->max_mixer_width * 2; 894 dev->mode_config.max_height = 4096; 895 896 /* 897 * Support format modifiers for compression etc. 898 */ 899 dev->mode_config.allow_fb_modifiers = true; 900 901 /* 902 * _dpu_kms_drm_obj_init should create the DRM related objects 903 * i.e. CRTCs, planes, encoders, connectors and so forth 904 */ 905 rc = _dpu_kms_drm_obj_init(dpu_kms); 906 if (rc) { 907 DPU_ERROR("modeset init failed: %d\n", rc); 908 goto drm_obj_init_err; 909 } 910 911 dpu_vbif_init_memtypes(dpu_kms); 912 913 pm_runtime_put_sync(&dpu_kms->pdev->dev); 914 915 return 0; 916 917 drm_obj_init_err: 918 dpu_core_perf_destroy(&dpu_kms->perf); 919 hw_intr_init_err: 920 perf_err: 921 power_error: 922 pm_runtime_put_sync(&dpu_kms->pdev->dev); 923 error: 924 _dpu_kms_hw_destroy(dpu_kms); 925 926 return rc; 927 } 928 929 struct msm_kms *dpu_kms_init(struct drm_device *dev) 930 { 931 struct msm_drm_private *priv; 932 struct dpu_kms *dpu_kms; 933 int irq; 934 935 if (!dev) { 936 DPU_ERROR("drm device node invalid\n"); 937 return ERR_PTR(-EINVAL); 938 } 939 940 priv = dev->dev_private; 941 dpu_kms = to_dpu_kms(priv->kms); 942 943 irq = irq_of_parse_and_map(dpu_kms->pdev->dev.of_node, 0); 944 if (irq < 0) { 945 DPU_ERROR("failed to get irq: %d\n", irq); 946 return ERR_PTR(irq); 947 } 948 dpu_kms->base.irq = irq; 949 950 return &dpu_kms->base; 951 } 952 953 static int dpu_bind(struct device *dev, struct device *master, void *data) 954 { 955 struct drm_device *ddev = dev_get_drvdata(master); 956 struct platform_device *pdev = to_platform_device(dev); 957 struct msm_drm_private *priv = ddev->dev_private; 958 struct dpu_kms *dpu_kms; 959 struct dss_module_power *mp; 960 int ret = 0; 961 962 dpu_kms = devm_kzalloc(&pdev->dev, sizeof(*dpu_kms), GFP_KERNEL); 963 if (!dpu_kms) 964 return -ENOMEM; 965 966 mp = &dpu_kms->mp; 967 ret = msm_dss_parse_clock(pdev, mp); 968 if (ret) { 969 DPU_ERROR("failed to parse clocks, ret=%d\n", ret); 970 return ret; 971 } 972 973 platform_set_drvdata(pdev, dpu_kms); 974 975 msm_kms_init(&dpu_kms->base, &kms_funcs); 976 dpu_kms->dev = ddev; 977 dpu_kms->pdev = pdev; 978 979 pm_runtime_enable(&pdev->dev); 980 dpu_kms->rpm_enabled = true; 981 982 priv->kms = &dpu_kms->base; 983 return ret; 984 } 985 986 static void dpu_unbind(struct device *dev, struct device *master, void *data) 987 { 988 struct platform_device *pdev = to_platform_device(dev); 989 struct dpu_kms *dpu_kms = platform_get_drvdata(pdev); 990 struct dss_module_power *mp = &dpu_kms->mp; 991 992 msm_dss_put_clk(mp->clk_config, mp->num_clk); 993 devm_kfree(&pdev->dev, mp->clk_config); 994 mp->num_clk = 0; 995 996 if (dpu_kms->rpm_enabled) 997 pm_runtime_disable(&pdev->dev); 998 } 999 1000 static const struct component_ops dpu_ops = { 1001 .bind = dpu_bind, 1002 .unbind = dpu_unbind, 1003 }; 1004 1005 static int dpu_dev_probe(struct platform_device *pdev) 1006 { 1007 return component_add(&pdev->dev, &dpu_ops); 1008 } 1009 1010 static int dpu_dev_remove(struct platform_device *pdev) 1011 { 1012 component_del(&pdev->dev, &dpu_ops); 1013 return 0; 1014 } 1015 1016 static int __maybe_unused dpu_runtime_suspend(struct device *dev) 1017 { 1018 int rc = -1; 1019 struct platform_device *pdev = to_platform_device(dev); 1020 struct dpu_kms *dpu_kms = platform_get_drvdata(pdev); 1021 struct drm_device *ddev; 1022 struct dss_module_power *mp = &dpu_kms->mp; 1023 1024 ddev = dpu_kms->dev; 1025 rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, false); 1026 if (rc) 1027 DPU_ERROR("clock disable failed rc:%d\n", rc); 1028 1029 return rc; 1030 } 1031 1032 static int __maybe_unused dpu_runtime_resume(struct device *dev) 1033 { 1034 int rc = -1; 1035 struct platform_device *pdev = to_platform_device(dev); 1036 struct dpu_kms *dpu_kms = platform_get_drvdata(pdev); 1037 struct drm_encoder *encoder; 1038 struct drm_device *ddev; 1039 struct dss_module_power *mp = &dpu_kms->mp; 1040 1041 ddev = dpu_kms->dev; 1042 rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, true); 1043 if (rc) { 1044 DPU_ERROR("clock enable failed rc:%d\n", rc); 1045 return rc; 1046 } 1047 1048 dpu_vbif_init_memtypes(dpu_kms); 1049 1050 drm_for_each_encoder(encoder, ddev) 1051 dpu_encoder_virt_runtime_resume(encoder); 1052 1053 return rc; 1054 } 1055 1056 static const struct dev_pm_ops dpu_pm_ops = { 1057 SET_RUNTIME_PM_OPS(dpu_runtime_suspend, dpu_runtime_resume, NULL) 1058 }; 1059 1060 static const struct of_device_id dpu_dt_match[] = { 1061 { .compatible = "qcom,sdm845-dpu", }, 1062 { .compatible = "qcom,sc7180-dpu", }, 1063 {} 1064 }; 1065 MODULE_DEVICE_TABLE(of, dpu_dt_match); 1066 1067 static struct platform_driver dpu_driver = { 1068 .probe = dpu_dev_probe, 1069 .remove = dpu_dev_remove, 1070 .driver = { 1071 .name = "msm_dpu", 1072 .of_match_table = dpu_dt_match, 1073 .pm = &dpu_pm_ops, 1074 }, 1075 }; 1076 1077 void __init msm_dpu_register(void) 1078 { 1079 platform_driver_register(&dpu_driver); 1080 } 1081 1082 void __exit msm_dpu_unregister(void) 1083 { 1084 platform_driver_unregister(&dpu_driver); 1085 } 1086