drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2013 Red Hat
   4  * Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
   5  * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
   6  *
   7  * Author: Rob Clark <robdclark@gmail.com>
   8  */
   9
  10 #define pr_fmt(fmt)     "[drm:%s:%d] " fmt, __func__, __LINE__
  11
  12 #include <linux/debugfs.h>
  13 #include <linux/dma-buf.h>
  14 #include <linux/of_irq.h>
  15 #include <linux/pm_opp.h>
  16
  17 #include <drm/drm_crtc.h>
  18 #include <drm/drm_file.h>
  19 #include <drm/drm_vblank.h>
  20 #include <drm/drm_writeback.h>
  21
  22 #include "msm_drv.h"
  23 #include "msm_mmu.h"
  24 #include "msm_gem.h"
  25 #include "disp/msm_disp_snapshot.h"
  26
  27 #include "dpu_core_irq.h"
  28 #include "dpu_crtc.h"
  29 #include "dpu_encoder.h"
  30 #include "dpu_formats.h"
  31 #include "dpu_hw_vbif.h"
  32 #include "dpu_kms.h"
  33 #include "dpu_plane.h"
  34 #include "dpu_vbif.h"
  35 #include "dpu_writeback.h"
  36
  37 #define CREATE_TRACE_POINTS
  38 #include "dpu_trace.h"
  39
  40 /*
  41  * To enable overall DRM driver logging
  42  * # echo 0x2 > /sys/module/drm/parameters/debug
  43  *
  44  * To enable DRM driver h/w logging
  45  * # echo <mask> > /sys/kernel/debug/dri/0/debug/hw_log_mask
  46  *
  47  * See dpu_hw_mdss.h for h/w logging mask definitions (search for DPU_DBG_MASK_)
  48  */
  49 #define DPU_DEBUGFS_DIR "msm_dpu"
  50 #define DPU_DEBUGFS_HWMASKNAME "hw_log_mask"
  51
  52 static int dpu_kms_hw_init(struct msm_kms *kms);
  53 static void _dpu_kms_mmu_destroy(struct dpu_kms *dpu_kms);
  54
  55 #ifdef CONFIG_DEBUG_FS
  56 static int _dpu_danger_signal_status(struct seq_file *s,
  57                 bool danger_status)
  58 {
  59         struct dpu_kms *kms = (struct dpu_kms *)s->private;
  60         struct dpu_danger_safe_status status;
  61         int i;
  62
  63         if (!kms->hw_mdp) {
  64                 DPU_ERROR("invalid arg(s)\n");
  65                 return 0;
  66         }
  67
  68         memset(&status, 0, sizeof(struct dpu_danger_safe_status));
  69
  70         pm_runtime_get_sync(&kms->pdev->dev);
  71         if (danger_status) {
  72                 seq_puts(s, "\nDanger signal status:\n");
  73                 if (kms->hw_mdp->ops.get_danger_status)
  74                         kms->hw_mdp->ops.get_danger_status(kms->hw_mdp,
  75                                         &status);
  76         } else {
  77                 seq_puts(s, "\nSafe signal status:\n");
  78                 if (kms->hw_mdp->ops.get_safe_status)
  79                         kms->hw_mdp->ops.get_safe_status(kms->hw_mdp,
  80                                         &status);
  81         }
  82         pm_runtime_put_sync(&kms->pdev->dev);
  83
  84         seq_printf(s, "MDP     :  0x%x\n", status.mdp);
  85
  86         for (i = SSPP_VIG0; i < SSPP_MAX; i++)
  87                 seq_printf(s, "SSPP%d   :  0x%x  \n", i - SSPP_VIG0,
  88                                 status.sspp[i]);
  89         seq_puts(s, "\n");
  90
  91         return 0;
  92 }
  93
  94 static int dpu_debugfs_danger_stats_show(struct seq_file *s, void *v)
  95 {
  96         return _dpu_danger_signal_status(s, true);
  97 }
  98 DEFINE_SHOW_ATTRIBUTE(dpu_debugfs_danger_stats);
  99
 100 static int dpu_debugfs_safe_stats_show(struct seq_file *s, void *v)
 101 {
 102         return _dpu_danger_signal_status(s, false);
 103 }
 104 DEFINE_SHOW_ATTRIBUTE(dpu_debugfs_safe_stats);
 105
 106 static ssize_t _dpu_plane_danger_read(struct file *file,
 107                         char __user *buff, size_t count, loff_t *ppos)
 108 {
 109         struct dpu_kms *kms = file->private_data;
 110         int len;
 111         char buf[40];
 112
 113         len = scnprintf(buf, sizeof(buf), "%d\n", !kms->has_danger_ctrl);
 114
 115         return simple_read_from_buffer(buff, count, ppos, buf, len);
 116 }
 117
 118 static void _dpu_plane_set_danger_state(struct dpu_kms *kms, bool enable)
 119 {
 120         struct drm_plane *plane;
 121
 122         drm_for_each_plane(plane, kms->dev) {
 123                 if (plane->fb && plane->state) {
 124                         dpu_plane_danger_signal_ctrl(plane, enable);
 125                         DPU_DEBUG("plane:%d img:%dx%d ",
 126                                 plane->base.id, plane->fb->width,
 127                                 plane->fb->height);
 128                         DPU_DEBUG("src[%d,%d,%d,%d] dst[%d,%d,%d,%d]\n",
 129                                 plane->state->src_x >> 16,
 130                                 plane->state->src_y >> 16,
 131                                 plane->state->src_w >> 16,
 132                                 plane->state->src_h >> 16,
 133                                 plane->state->crtc_x, plane->state->crtc_y,
 134                                 plane->state->crtc_w, plane->state->crtc_h);
 135                 } else {
 136                         DPU_DEBUG("Inactive plane:%d\n", plane->base.id);
 137                 }
 138         }
 139 }
 140
 141 static ssize_t _dpu_plane_danger_write(struct file *file,
 142                     const char __user *user_buf, size_t count, loff_t *ppos)
 143 {
 144         struct dpu_kms *kms = file->private_data;
 145         int disable_panic;
 146         int ret;
 147
 148         ret = kstrtouint_from_user(user_buf, count, 0, &disable_panic);
 149         if (ret)
 150                 return ret;
 151
 152         if (disable_panic) {
 153                 /* Disable panic signal for all active pipes */
 154                 DPU_DEBUG("Disabling danger:\n");
 155                 _dpu_plane_set_danger_state(kms, false);
 156                 kms->has_danger_ctrl = false;
 157         } else {
 158                 /* Enable panic signal for all active pipes */
 159                 DPU_DEBUG("Enabling danger:\n");
 160                 kms->has_danger_ctrl = true;
 161                 _dpu_plane_set_danger_state(kms, true);
 162         }
 163
 164         return count;
 165 }
 166
 167 static const struct file_operations dpu_plane_danger_enable = {
 168         .open = simple_open,
 169         .read = _dpu_plane_danger_read,
 170         .write = _dpu_plane_danger_write,
 171 };
 172
 173 static void dpu_debugfs_danger_init(struct dpu_kms *dpu_kms,
 174                 struct dentry *parent)
 175 {
 176         struct dentry *entry = debugfs_create_dir("danger", parent);
 177
 178         debugfs_create_file("danger_status", 0600, entry,
 179                         dpu_kms, &dpu_debugfs_danger_stats_fops);
 180         debugfs_create_file("safe_status", 0600, entry,
 181                         dpu_kms, &dpu_debugfs_safe_stats_fops);
 182         debugfs_create_file("disable_danger", 0600, entry,
 183                         dpu_kms, &dpu_plane_danger_enable);
 184
 185 }
 186
 187 /*
 188  * Companion structure for dpu_debugfs_create_regset32.
 189  */
 190 struct dpu_debugfs_regset32 {
 191         uint32_t offset;
 192         uint32_t blk_len;
 193         struct dpu_kms *dpu_kms;
 194 };
 195
 196 static int _dpu_debugfs_show_regset32(struct seq_file *s, void *data)
 197 {
 198         struct dpu_debugfs_regset32 *regset = s->private;
 199         struct dpu_kms *dpu_kms = regset->dpu_kms;
 200         void __iomem *base;
 201         uint32_t i, addr;
 202
 203         if (!dpu_kms->mmio)
 204                 return 0;
 205
 206         base = dpu_kms->mmio + regset->offset;
 207
 208         /* insert padding spaces, if needed */
 209         if (regset->offset & 0xF) {
 210                 seq_printf(s, "[%x]", regset->offset & ~0xF);
 211                 for (i = 0; i < (regset->offset & 0xF); i += 4)
 212                         seq_puts(s, "         ");
 213         }
 214
 215         pm_runtime_get_sync(&dpu_kms->pdev->dev);
 216
 217         /* main register output */
 218         for (i = 0; i < regset->blk_len; i += 4) {
 219                 addr = regset->offset + i;
 220                 if ((addr & 0xF) == 0x0)
 221                         seq_printf(s, i ? "\n[%x]" : "[%x]", addr);
 222                 seq_printf(s, " %08x", readl_relaxed(base + i));
 223         }
 224         seq_puts(s, "\n");
 225         pm_runtime_put_sync(&dpu_kms->pdev->dev);
 226
 227         return 0;
 228 }
 229
 230 static int dpu_debugfs_open_regset32(struct inode *inode,
 231                 struct file *file)
 232 {
 233         return single_open(file, _dpu_debugfs_show_regset32, inode->i_private);
 234 }
 235
 236 static const struct file_operations dpu_fops_regset32 = {
 237         .open =         dpu_debugfs_open_regset32,
 238         .read =         seq_read,
 239         .llseek =       seq_lseek,
 240         .release =      single_release,
 241 };
 242
 243 void dpu_debugfs_create_regset32(const char *name, umode_t mode,
 244                 void *parent,
 245                 uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms)
 246 {
 247         struct dpu_debugfs_regset32 *regset;
 248
 249         if (WARN_ON(!name || !dpu_kms || !length))
 250                 return;
 251
 252         regset = devm_kzalloc(&dpu_kms->pdev->dev, sizeof(*regset), GFP_KERNEL);
 253         if (!regset)
 254                 return;
 255
 256         /* make sure offset is a multiple of 4 */
 257         regset->offset = round_down(offset, 4);
 258         regset->blk_len = length;
 259         regset->dpu_kms = dpu_kms;
 260
 261         debugfs_create_file(name, mode, parent, regset, &dpu_fops_regset32);
 262 }
 263
 264 static int dpu_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor)
 265 {
 266         struct dpu_kms *dpu_kms = to_dpu_kms(kms);
 267         void *p = dpu_hw_util_get_log_mask_ptr();
 268         struct dentry *entry;
 269         struct drm_device *dev;
 270         struct msm_drm_private *priv;
 271         int i;
 272
 273         if (!p)
 274                 return -EINVAL;
 275
 276         /* Only create a set of debugfs for the primary node, ignore render nodes */
 277         if (minor->type != DRM_MINOR_PRIMARY)
 278                 return 0;
 279
 280         dev = dpu_kms->dev;
 281         priv = dev->dev_private;
 282
 283         entry = debugfs_create_dir("debug", minor->debugfs_root);
 284
 285         debugfs_create_x32(DPU_DEBUGFS_HWMASKNAME, 0600, entry, p);
 286
 287         dpu_debugfs_danger_init(dpu_kms, entry);
 288         dpu_debugfs_vbif_init(dpu_kms, entry);
 289         dpu_debugfs_core_irq_init(dpu_kms, entry);
 290         dpu_debugfs_sspp_init(dpu_kms, entry);
 291
 292         for (i = 0; i < ARRAY_SIZE(priv->dp); i++) {
 293                 if (priv->dp[i])
 294                         msm_dp_debugfs_init(priv->dp[i], minor);
 295         }
 296
 297         return dpu_core_perf_debugfs_init(dpu_kms, entry);
 298 }
 299 #endif
 300
 301 /* Global/shared object state funcs */
 302
 303 /*
 304  * This is a helper that returns the private state currently in operation.
 305  * Note that this would return the "old_state" if called in the atomic check
 306  * path, and the "new_state" after the atomic swap has been done.
 307  */
 308 struct dpu_global_state *
 309 dpu_kms_get_existing_global_state(struct dpu_kms *dpu_kms)
 310 {
 311         return to_dpu_global_state(dpu_kms->global_state.state);
 312 }
 313
 314 /*
 315  * This acquires the modeset lock set aside for global state, creates
 316  * a new duplicated private object state.
 317  */
 318 struct dpu_global_state *dpu_kms_get_global_state(struct drm_atomic_state *s)
 319 {
 320         struct msm_drm_private *priv = s->dev->dev_private;
 321         struct dpu_kms *dpu_kms = to_dpu_kms(priv->kms);
 322         struct drm_private_state *priv_state;
 323         int ret;
 324
 325         ret = drm_modeset_lock(&dpu_kms->global_state_lock, s->acquire_ctx);
 326         if (ret)
 327                 return ERR_PTR(ret);
 328
 329         priv_state = drm_atomic_get_private_obj_state(s,
 330                                                 &dpu_kms->global_state);
 331         if (IS_ERR(priv_state))
 332                 return ERR_CAST(priv_state);
 333
 334         return to_dpu_global_state(priv_state);
 335 }
 336
 337 static struct drm_private_state *
 338 dpu_kms_global_duplicate_state(struct drm_private_obj *obj)
 339 {
 340         struct dpu_global_state *state;
 341
 342         state = kmemdup(obj->state, sizeof(*state), GFP_KERNEL);
 343         if (!state)
 344                 return NULL;
 345
 346         __drm_atomic_helper_private_obj_duplicate_state(obj, &state->base);
 347
 348         return &state->base;
 349 }
 350
 351 static void dpu_kms_global_destroy_state(struct drm_private_obj *obj,
 352                                       struct drm_private_state *state)
 353 {
 354         struct dpu_global_state *dpu_state = to_dpu_global_state(state);
 355
 356         kfree(dpu_state);
 357 }
 358
 359 static const struct drm_private_state_funcs dpu_kms_global_state_funcs = {
 360         .atomic_duplicate_state = dpu_kms_global_duplicate_state,
 361         .atomic_destroy_state = dpu_kms_global_destroy_state,
 362 };
 363
 364 static int dpu_kms_global_obj_init(struct dpu_kms *dpu_kms)
 365 {
 366         struct dpu_global_state *state;
 367
 368         drm_modeset_lock_init(&dpu_kms->global_state_lock);
 369
 370         state = kzalloc(sizeof(*state), GFP_KERNEL);
 371         if (!state)
 372                 return -ENOMEM;
 373
 374         drm_atomic_private_obj_init(dpu_kms->dev, &dpu_kms->global_state,
 375                                     &state->base,
 376                                     &dpu_kms_global_state_funcs);
 377         return 0;
 378 }
 379
 380 static int dpu_kms_parse_data_bus_icc_path(struct dpu_kms *dpu_kms)
 381 {
 382         struct icc_path *path0;
 383         struct icc_path *path1;
 384         struct drm_device *dev = dpu_kms->dev;
 385         struct device *dpu_dev = dev->dev;
 386         struct device *mdss_dev = dpu_dev->parent;
 387
 388         /* Interconnects are a part of MDSS device tree binding, not the
 389          * MDP/DPU device. */
 390         path0 = of_icc_get(mdss_dev, "mdp0-mem");
 391         path1 = of_icc_get(mdss_dev, "mdp1-mem");
 392
 393         if (IS_ERR_OR_NULL(path0))
 394                 return PTR_ERR_OR_ZERO(path0);
 395
 396         dpu_kms->path[0] = path0;
 397         dpu_kms->num_paths = 1;
 398
 399         if (!IS_ERR_OR_NULL(path1)) {
 400                 dpu_kms->path[1] = path1;
 401                 dpu_kms->num_paths++;
 402         }
 403         return 0;
 404 }
 405
 406 static int dpu_kms_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
 407 {
 408         return dpu_crtc_vblank(crtc, true);
 409 }
 410
 411 static void dpu_kms_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc)
 412 {
 413         dpu_crtc_vblank(crtc, false);
 414 }
 415
 416 static void dpu_kms_enable_commit(struct msm_kms *kms)
 417 {
 418         struct dpu_kms *dpu_kms = to_dpu_kms(kms);
 419         pm_runtime_get_sync(&dpu_kms->pdev->dev);
 420 }
 421
 422 static void dpu_kms_disable_commit(struct msm_kms *kms)
 423 {
 424         struct dpu_kms *dpu_kms = to_dpu_kms(kms);
 425         pm_runtime_put_sync(&dpu_kms->pdev->dev);
 426 }
 427
 428 static ktime_t dpu_kms_vsync_time(struct msm_kms *kms, struct drm_crtc *crtc)
 429 {
 430         struct drm_encoder *encoder;
 431
 432         drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask) {
 433                 ktime_t vsync_time;
 434
 435                 if (dpu_encoder_vsync_time(encoder, &vsync_time) == 0)
 436                         return vsync_time;
 437         }
 438
 439         return ktime_get();
 440 }
 441
 442 static void dpu_kms_prepare_commit(struct msm_kms *kms,
 443                 struct drm_atomic_state *state)
 444 {
 445         struct drm_crtc *crtc;
 446         struct drm_crtc_state *crtc_state;
 447         struct drm_encoder *encoder;
 448         int i;
 449
 450         if (!kms)
 451                 return;
 452
 453         /* Call prepare_commit for all affected encoders */
 454         for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
 455                 drm_for_each_encoder_mask(encoder, crtc->dev,
 456                                           crtc_state->encoder_mask) {
 457                         dpu_encoder_prepare_commit(encoder);
 458                 }
 459         }
 460 }
 461
 462 static void dpu_kms_flush_commit(struct msm_kms *kms, unsigned crtc_mask)
 463 {
 464         struct dpu_kms *dpu_kms = to_dpu_kms(kms);
 465         struct drm_crtc *crtc;
 466
 467         for_each_crtc_mask(dpu_kms->dev, crtc, crtc_mask) {
 468                 if (!crtc->state->active)
 469                         continue;
 470
 471                 trace_dpu_kms_commit(DRMID(crtc));
 472                 dpu_crtc_commit_kickoff(crtc);
 473         }
 474 }
 475
 476 static void dpu_kms_complete_commit(struct msm_kms *kms, unsigned crtc_mask)
 477 {
 478         struct dpu_kms *dpu_kms = to_dpu_kms(kms);
 479         struct drm_crtc *crtc;
 480
 481         DPU_ATRACE_BEGIN("kms_complete_commit");
 482
 483         for_each_crtc_mask(dpu_kms->dev, crtc, crtc_mask)
 484                 dpu_crtc_complete_commit(crtc);
 485
 486         DPU_ATRACE_END("kms_complete_commit");
 487 }
 488
 489 static void dpu_kms_wait_for_commit_done(struct msm_kms *kms,
 490                 struct drm_crtc *crtc)
 491 {
 492         struct drm_encoder *encoder;
 493         struct drm_device *dev;
 494         int ret;
 495
 496         if (!kms || !crtc || !crtc->state) {
 497                 DPU_ERROR("invalid params\n");
 498                 return;
 499         }
 500
 501         dev = crtc->dev;
 502
 503         if (!crtc->state->enable) {
 504                 DPU_DEBUG("[crtc:%d] not enable\n", crtc->base.id);
 505                 return;
 506         }
 507
 508         if (!crtc->state->active) {
 509                 DPU_DEBUG("[crtc:%d] not active\n", crtc->base.id);
 510                 return;
 511         }
 512
 513         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 514                 if (encoder->crtc != crtc)
 515                         continue;
 516                 /*
 517                  * Wait for post-flush if necessary to delay before
 518                  * plane_cleanup. For example, wait for vsync in case of video
 519                  * mode panels. This may be a no-op for command mode panels.
 520                  */
 521                 trace_dpu_kms_wait_for_commit_done(DRMID(crtc));
 522                 ret = dpu_encoder_wait_for_event(encoder, MSM_ENC_COMMIT_DONE);
 523                 if (ret && ret != -EWOULDBLOCK) {
 524                         DPU_ERROR("wait for commit done returned %d\n", ret);
 525                         break;
 526                 }
 527         }
 528 }
 529
 530 static void dpu_kms_wait_flush(struct msm_kms *kms, unsigned crtc_mask)
 531 {
 532         struct dpu_kms *dpu_kms = to_dpu_kms(kms);
 533         struct drm_crtc *crtc;
 534
 535         for_each_crtc_mask(dpu_kms->dev, crtc, crtc_mask)
 536                 dpu_kms_wait_for_commit_done(kms, crtc);
 537 }
 538
 539 static int _dpu_kms_initialize_dsi(struct drm_device *dev,
 540                                     struct msm_drm_private *priv,
 541                                     struct dpu_kms *dpu_kms)
 542 {
 543         struct drm_encoder *encoder = NULL;
 544         struct msm_display_info info;
 545         int i, rc = 0;
 546
 547         if (!(priv->dsi[0] || priv->dsi[1]))
 548                 return rc;
 549
 550         /*
 551          * We support following confiurations:
 552          * - Single DSI host (dsi0 or dsi1)
 553          * - Two independent DSI hosts
 554          * - Bonded DSI0 and DSI1 hosts
 555          *
 556          * TODO: Support swapping DSI0 and DSI1 in the bonded setup.
 557          */
 558         for (i = 0; i < ARRAY_SIZE(priv->dsi); i++) {
 559                 int other = (i + 1) % 2;
 560
 561                 if (!priv->dsi[i])
 562                         continue;
 563
 564                 if (msm_dsi_is_bonded_dsi(priv->dsi[i]) &&
 565                     !msm_dsi_is_master_dsi(priv->dsi[i]))
 566                         continue;
 567
 568                 encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_DSI);
 569                 if (IS_ERR(encoder)) {
 570                         DPU_ERROR("encoder init failed for dsi display\n");
 571                         return PTR_ERR(encoder);
 572                 }
 573
 574                 memset(&info, 0, sizeof(info));
 575                 info.intf_type = encoder->encoder_type;
 576
 577                 rc = msm_dsi_modeset_init(priv->dsi[i], dev, encoder);
 578                 if (rc) {
 579                         DPU_ERROR("modeset_init failed for dsi[%d], rc = %d\n",
 580                                 i, rc);
 581                         break;
 582                 }
 583
 584                 info.h_tile_instance[info.num_of_h_tiles++] = i;
 585                 info.is_cmd_mode = msm_dsi_is_cmd_mode(priv->dsi[i]);
 586
 587                 info.dsc = msm_dsi_get_dsc_config(priv->dsi[i]);
 588
 589                 if (msm_dsi_is_bonded_dsi(priv->dsi[i]) && priv->dsi[other]) {
 590                         rc = msm_dsi_modeset_init(priv->dsi[other], dev, encoder);
 591                         if (rc) {
 592                                 DPU_ERROR("modeset_init failed for dsi[%d], rc = %d\n",
 593                                         other, rc);
 594                                 break;
 595                         }
 596
 597                         info.h_tile_instance[info.num_of_h_tiles++] = other;
 598                 }
 599
 600                 rc = dpu_encoder_setup(dev, encoder, &info);
 601                 if (rc)
 602                         DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
 603                                   encoder->base.id, rc);
 604         }
 605
 606         return rc;
 607 }
 608
 609 static int _dpu_kms_initialize_displayport(struct drm_device *dev,
 610                                             struct msm_drm_private *priv,
 611                                             struct dpu_kms *dpu_kms)
 612 {
 613         struct drm_encoder *encoder = NULL;
 614         struct msm_display_info info;
 615         int rc;
 616         int i;
 617
 618         for (i = 0; i < ARRAY_SIZE(priv->dp); i++) {
 619                 if (!priv->dp[i])
 620                         continue;
 621
 622                 encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_TMDS);
 623                 if (IS_ERR(encoder)) {
 624                         DPU_ERROR("encoder init failed for dsi display\n");
 625                         return PTR_ERR(encoder);
 626                 }
 627
 628                 memset(&info, 0, sizeof(info));
 629                 rc = msm_dp_modeset_init(priv->dp[i], dev, encoder);
 630                 if (rc) {
 631                         DPU_ERROR("modeset_init failed for DP, rc = %d\n", rc);
 632                         drm_encoder_cleanup(encoder);
 633                         return rc;
 634                 }
 635
 636                 info.num_of_h_tiles = 1;
 637                 info.h_tile_instance[0] = i;
 638                 info.intf_type = encoder->encoder_type;
 639                 rc = dpu_encoder_setup(dev, encoder, &info);
 640                 if (rc) {
 641                         DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
 642                                   encoder->base.id, rc);
 643                         return rc;
 644                 }
 645         }
 646
 647         return 0;
 648 }
 649
 650 static int _dpu_kms_initialize_writeback(struct drm_device *dev,
 651                 struct msm_drm_private *priv, struct dpu_kms *dpu_kms,
 652                 const u32 *wb_formats, int n_formats)
 653 {
 654         struct drm_encoder *encoder = NULL;
 655         struct msm_display_info info;
 656         int rc;
 657
 658         encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_VIRTUAL);
 659         if (IS_ERR(encoder)) {
 660                 DPU_ERROR("encoder init failed for dsi display\n");
 661                 return PTR_ERR(encoder);
 662         }
 663
 664         memset(&info, 0, sizeof(info));
 665
 666         rc = dpu_writeback_init(dev, encoder, wb_formats,
 667                         n_formats);
 668         if (rc) {
 669                 DPU_ERROR("dpu_writeback_init, rc = %d\n", rc);
 670                 drm_encoder_cleanup(encoder);
 671                 return rc;
 672         }
 673
 674         info.num_of_h_tiles = 1;
 675         /* use only WB idx 2 instance for DPU */
 676         info.h_tile_instance[0] = WB_2;
 677         info.intf_type = encoder->encoder_type;
 678
 679         rc = dpu_encoder_setup(dev, encoder, &info);
 680         if (rc) {
 681                 DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
 682                                   encoder->base.id, rc);
 683                 return rc;
 684         }
 685
 686         return 0;
 687 }
 688
 689 /**
 690  * _dpu_kms_setup_displays - create encoders, bridges and connectors
 691  *                           for underlying displays
 692  * @dev:        Pointer to drm device structure
 693  * @priv:       Pointer to private drm device data
 694  * @dpu_kms:    Pointer to dpu kms structure
 695  * Returns:     Zero on success
 696  */
 697 static int _dpu_kms_setup_displays(struct drm_device *dev,
 698                                     struct msm_drm_private *priv,
 699                                     struct dpu_kms *dpu_kms)
 700 {
 701         int rc = 0;
 702         int i;
 703
 704         rc = _dpu_kms_initialize_dsi(dev, priv, dpu_kms);
 705         if (rc) {
 706                 DPU_ERROR("initialize_dsi failed, rc = %d\n", rc);
 707                 return rc;
 708         }
 709
 710         rc = _dpu_kms_initialize_displayport(dev, priv, dpu_kms);
 711         if (rc) {
 712                 DPU_ERROR("initialize_DP failed, rc = %d\n", rc);
 713                 return rc;
 714         }
 715
 716         /* Since WB isn't a driver check the catalog before initializing */
 717         if (dpu_kms->catalog->wb_count) {
 718                 for (i = 0; i < dpu_kms->catalog->wb_count; i++) {
 719                         if (dpu_kms->catalog->wb[i].id == WB_2) {
 720                                 rc = _dpu_kms_initialize_writeback(dev, priv, dpu_kms,
 721                                                 dpu_kms->catalog->wb[i].format_list,
 722                                                 dpu_kms->catalog->wb[i].num_formats);
 723                                 if (rc) {
 724                                         DPU_ERROR("initialize_WB failed, rc = %d\n", rc);
 725                                         return rc;
 726                                 }
 727                         }
 728                 }
 729         }
 730
 731         return rc;
 732 }
 733
 734 #define MAX_PLANES 20
 735 static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 736 {
 737         struct drm_device *dev;
 738         struct drm_plane *primary_planes[MAX_PLANES], *plane;
 739         struct drm_plane *cursor_planes[MAX_PLANES] = { NULL };
 740         struct drm_crtc *crtc;
 741         struct drm_encoder *encoder;
 742         unsigned int num_encoders;
 743
 744         struct msm_drm_private *priv;
 745         const struct dpu_mdss_cfg *catalog;
 746
 747         int primary_planes_idx = 0, cursor_planes_idx = 0, i, ret;
 748         int max_crtc_count;
 749         dev = dpu_kms->dev;
 750         priv = dev->dev_private;
 751         catalog = dpu_kms->catalog;
 752
 753         /*
 754          * Create encoder and query display drivers to create
 755          * bridges and connectors
 756          */
 757         ret = _dpu_kms_setup_displays(dev, priv, dpu_kms);
 758         if (ret)
 759                 return ret;
 760
 761         num_encoders = 0;
 762         drm_for_each_encoder(encoder, dev)
 763                 num_encoders++;
 764
 765         max_crtc_count = min(catalog->mixer_count, num_encoders);
 766
 767         /* Create the planes, keeping track of one primary/cursor per crtc */
 768         for (i = 0; i < catalog->sspp_count; i++) {
 769                 enum drm_plane_type type;
 770
 771                 if ((catalog->sspp[i].features & BIT(DPU_SSPP_CURSOR))
 772                         && cursor_planes_idx < max_crtc_count)
 773                         type = DRM_PLANE_TYPE_CURSOR;
 774                 else if (primary_planes_idx < max_crtc_count)
 775                         type = DRM_PLANE_TYPE_PRIMARY;
 776                 else
 777                         type = DRM_PLANE_TYPE_OVERLAY;
 778
 779                 DPU_DEBUG("Create plane type %d with features %lx (cur %lx)\n",
 780                           type, catalog->sspp[i].features,
 781                           catalog->sspp[i].features & BIT(DPU_SSPP_CURSOR));
 782
 783                 plane = dpu_plane_init(dev, catalog->sspp[i].id, type,
 784                                        (1UL << max_crtc_count) - 1, 0);
 785                 if (IS_ERR(plane)) {
 786                         DPU_ERROR("dpu_plane_init failed\n");
 787                         ret = PTR_ERR(plane);
 788                         return ret;
 789                 }
 790
 791                 if (type == DRM_PLANE_TYPE_CURSOR)
 792                         cursor_planes[cursor_planes_idx++] = plane;
 793                 else if (type == DRM_PLANE_TYPE_PRIMARY)
 794                         primary_planes[primary_planes_idx++] = plane;
 795         }
 796
 797         max_crtc_count = min(max_crtc_count, primary_planes_idx);
 798
 799         /* Create one CRTC per encoder */
 800         for (i = 0; i < max_crtc_count; i++) {
 801                 crtc = dpu_crtc_init(dev, primary_planes[i], cursor_planes[i]);
 802                 if (IS_ERR(crtc)) {
 803                         ret = PTR_ERR(crtc);
 804                         return ret;
 805                 }
 806                 priv->crtcs[priv->num_crtcs++] = crtc;
 807         }
 808
 809         /* All CRTCs are compatible with all encoders */
 810         drm_for_each_encoder(encoder, dev)
 811                 encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
 812
 813         return 0;
 814 }
 815
 816 static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms)
 817 {
 818         int i;
 819
 820         if (dpu_kms->hw_intr)
 821                 dpu_hw_intr_destroy(dpu_kms->hw_intr);
 822         dpu_kms->hw_intr = NULL;
 823
 824         /* safe to call these more than once during shutdown */
 825         _dpu_kms_mmu_destroy(dpu_kms);
 826
 827         if (dpu_kms->catalog) {
 828                 for (i = 0; i < dpu_kms->catalog->vbif_count; i++) {
 829                         u32 vbif_idx = dpu_kms->catalog->vbif[i].id;
 830
 831                         if ((vbif_idx < VBIF_MAX) && dpu_kms->hw_vbif[vbif_idx]) {
 832                                 dpu_hw_vbif_destroy(dpu_kms->hw_vbif[vbif_idx]);
 833                                 dpu_kms->hw_vbif[vbif_idx] = NULL;
 834                         }
 835                 }
 836         }
 837
 838         if (dpu_kms->rm_init)
 839                 dpu_rm_destroy(&dpu_kms->rm);
 840         dpu_kms->rm_init = false;
 841
 842         dpu_kms->catalog = NULL;
 843
 844         if (dpu_kms->vbif[VBIF_NRT])
 845                 devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->vbif[VBIF_NRT]);
 846         dpu_kms->vbif[VBIF_NRT] = NULL;
 847
 848         if (dpu_kms->vbif[VBIF_RT])
 849                 devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->vbif[VBIF_RT]);
 850         dpu_kms->vbif[VBIF_RT] = NULL;
 851
 852         if (dpu_kms->hw_mdp)
 853                 dpu_hw_mdp_destroy(dpu_kms->hw_mdp);
 854         dpu_kms->hw_mdp = NULL;
 855
 856         if (dpu_kms->mmio)
 857                 devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->mmio);
 858         dpu_kms->mmio = NULL;
 859 }
 860
 861 static void dpu_kms_destroy(struct msm_kms *kms)
 862 {
 863         struct dpu_kms *dpu_kms;
 864
 865         if (!kms) {
 866                 DPU_ERROR("invalid kms\n");
 867                 return;
 868         }
 869
 870         dpu_kms = to_dpu_kms(kms);
 871
 872         _dpu_kms_hw_destroy(dpu_kms);
 873
 874         msm_kms_destroy(&dpu_kms->base);
 875
 876         if (dpu_kms->rpm_enabled)
 877                 pm_runtime_disable(&dpu_kms->pdev->dev);
 878 }
 879
 880 static int dpu_irq_postinstall(struct msm_kms *kms)
 881 {
 882         struct msm_drm_private *priv;
 883         struct dpu_kms *dpu_kms = to_dpu_kms(kms);
 884         int i;
 885
 886         if (!dpu_kms || !dpu_kms->dev)
 887                 return -EINVAL;
 888
 889         priv = dpu_kms->dev->dev_private;
 890         if (!priv)
 891                 return -EINVAL;
 892
 893         for (i = 0; i < ARRAY_SIZE(priv->dp); i++)
 894                 msm_dp_irq_postinstall(priv->dp[i]);
 895
 896         return 0;
 897 }
 898
 899 static void dpu_kms_mdp_snapshot(struct msm_disp_state *disp_state, struct msm_kms *kms)
 900 {
 901         int i;
 902         struct dpu_kms *dpu_kms;
 903         const struct dpu_mdss_cfg *cat;
 904         struct dpu_hw_mdp *top;
 905
 906         dpu_kms = to_dpu_kms(kms);
 907
 908         cat = dpu_kms->catalog;
 909         top = dpu_kms->hw_mdp;
 910
 911         pm_runtime_get_sync(&dpu_kms->pdev->dev);
 912
 913         /* dump CTL sub-blocks HW regs info */
 914         for (i = 0; i < cat->ctl_count; i++)
 915                 msm_disp_snapshot_add_block(disp_state, cat->ctl[i].len,
 916                                 dpu_kms->mmio + cat->ctl[i].base, "ctl_%d", i);
 917
 918         /* dump DSPP sub-blocks HW regs info */
 919         for (i = 0; i < cat->dspp_count; i++)
 920                 msm_disp_snapshot_add_block(disp_state, cat->dspp[i].len,
 921                                 dpu_kms->mmio + cat->dspp[i].base, "dspp_%d", i);
 922
 923         /* dump INTF sub-blocks HW regs info */
 924         for (i = 0; i < cat->intf_count; i++)
 925                 msm_disp_snapshot_add_block(disp_state, cat->intf[i].len,
 926                                 dpu_kms->mmio + cat->intf[i].base, "intf_%d", i);
 927
 928         /* dump PP sub-blocks HW regs info */
 929         for (i = 0; i < cat->pingpong_count; i++)
 930                 msm_disp_snapshot_add_block(disp_state, cat->pingpong[i].len,
 931                                 dpu_kms->mmio + cat->pingpong[i].base, "pingpong_%d", i);
 932
 933         /* dump SSPP sub-blocks HW regs info */
 934         for (i = 0; i < cat->sspp_count; i++)
 935                 msm_disp_snapshot_add_block(disp_state, cat->sspp[i].len,
 936                                 dpu_kms->mmio + cat->sspp[i].base, "sspp_%d", i);
 937
 938         /* dump LM sub-blocks HW regs info */
 939         for (i = 0; i < cat->mixer_count; i++)
 940                 msm_disp_snapshot_add_block(disp_state, cat->mixer[i].len,
 941                                 dpu_kms->mmio + cat->mixer[i].base, "lm_%d", i);
 942
 943         /* dump WB sub-blocks HW regs info */
 944         for (i = 0; i < cat->wb_count; i++)
 945                 msm_disp_snapshot_add_block(disp_state, cat->wb[i].len,
 946                                 dpu_kms->mmio + cat->wb[i].base, "wb_%d", i);
 947
 948         msm_disp_snapshot_add_block(disp_state, top->hw.length,
 949                         dpu_kms->mmio + top->hw.blk_off, "top");
 950
 951         pm_runtime_put_sync(&dpu_kms->pdev->dev);
 952 }
 953
 954 static const struct msm_kms_funcs kms_funcs = {
 955         .hw_init         = dpu_kms_hw_init,
 956         .irq_preinstall  = dpu_core_irq_preinstall,
 957         .irq_postinstall = dpu_irq_postinstall,
 958         .irq_uninstall   = dpu_core_irq_uninstall,
 959         .irq             = dpu_core_irq,
 960         .enable_commit   = dpu_kms_enable_commit,
 961         .disable_commit  = dpu_kms_disable_commit,
 962         .vsync_time      = dpu_kms_vsync_time,
 963         .prepare_commit  = dpu_kms_prepare_commit,
 964         .flush_commit    = dpu_kms_flush_commit,
 965         .wait_flush      = dpu_kms_wait_flush,
 966         .complete_commit = dpu_kms_complete_commit,
 967         .enable_vblank   = dpu_kms_enable_vblank,
 968         .disable_vblank  = dpu_kms_disable_vblank,
 969         .check_modified_format = dpu_format_check_modified_format,
 970         .get_format      = dpu_get_msm_format,
 971         .destroy         = dpu_kms_destroy,
 972         .snapshot        = dpu_kms_mdp_snapshot,
 973 #ifdef CONFIG_DEBUG_FS
 974         .debugfs_init    = dpu_kms_debugfs_init,
 975 #endif
 976 };
 977
 978 static void _dpu_kms_mmu_destroy(struct dpu_kms *dpu_kms)
 979 {
 980         struct msm_mmu *mmu;
 981
 982         if (!dpu_kms->base.aspace)
 983                 return;
 984
 985         mmu = dpu_kms->base.aspace->mmu;
 986
 987         mmu->funcs->detach(mmu);
 988         msm_gem_address_space_put(dpu_kms->base.aspace);
 989
 990         dpu_kms->base.aspace = NULL;
 991 }
 992
 993 static int _dpu_kms_mmu_init(struct dpu_kms *dpu_kms)
 994 {
 995         struct iommu_domain *domain;
 996         struct msm_gem_address_space *aspace;
 997         struct msm_mmu *mmu;
 998         struct device *dpu_dev = dpu_kms->dev->dev;
 999         struct device *mdss_dev = dpu_dev->parent;
1000
1001         domain = iommu_domain_alloc(&platform_bus_type);
1002         if (!domain)
1003                 return 0;
1004
1005         /* IOMMUs are a part of MDSS device tree binding, not the
1006          * MDP/DPU device. */
1007         mmu = msm_iommu_new(mdss_dev, domain);
1008         if (IS_ERR(mmu)) {
1009                 iommu_domain_free(domain);
1010                 return PTR_ERR(mmu);
1011         }
1012         aspace = msm_gem_address_space_create(mmu, "dpu1",
1013                 0x1000, 0x100000000 - 0x1000);
1014
1015         if (IS_ERR(aspace)) {
1016                 mmu->funcs->destroy(mmu);
1017                 return PTR_ERR(aspace);
1018         }
1019
1020         dpu_kms->base.aspace = aspace;
1021         return 0;
1022 }
1023
1024 u64 dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name)
1025 {
1026         struct clk *clk;
1027
1028         clk = msm_clk_bulk_get_clock(dpu_kms->clocks, dpu_kms->num_clocks, clock_name);
1029         if (!clk)
1030                 return -EINVAL;
1031
1032         return clk_get_rate(clk);
1033 }
1034
1035 static int dpu_kms_hw_init(struct msm_kms *kms)
1036 {
1037         struct dpu_kms *dpu_kms;
1038         struct drm_device *dev;
1039         int i, rc = -EINVAL;
1040
1041         if (!kms) {
1042                 DPU_ERROR("invalid kms\n");
1043                 return rc;
1044         }
1045
1046         dpu_kms = to_dpu_kms(kms);
1047         dev = dpu_kms->dev;
1048
1049         rc = dpu_kms_global_obj_init(dpu_kms);
1050         if (rc)
1051                 return rc;
1052
1053         atomic_set(&dpu_kms->bandwidth_ref, 0);
1054
1055         dpu_kms->mmio = msm_ioremap(dpu_kms->pdev, "mdp");
1056         if (IS_ERR(dpu_kms->mmio)) {
1057                 rc = PTR_ERR(dpu_kms->mmio);
1058                 DPU_ERROR("mdp register memory map failed: %d\n", rc);
1059                 dpu_kms->mmio = NULL;
1060                 goto error;
1061         }
1062         DRM_DEBUG("mapped dpu address space @%pK\n", dpu_kms->mmio);
1063
1064         dpu_kms->vbif[VBIF_RT] = msm_ioremap(dpu_kms->pdev, "vbif");
1065         if (IS_ERR(dpu_kms->vbif[VBIF_RT])) {
1066                 rc = PTR_ERR(dpu_kms->vbif[VBIF_RT]);
1067                 DPU_ERROR("vbif register memory map failed: %d\n", rc);
1068                 dpu_kms->vbif[VBIF_RT] = NULL;
1069                 goto error;
1070         }
1071         dpu_kms->vbif[VBIF_NRT] = msm_ioremap_quiet(dpu_kms->pdev, "vbif_nrt");
1072         if (IS_ERR(dpu_kms->vbif[VBIF_NRT])) {
1073                 dpu_kms->vbif[VBIF_NRT] = NULL;
1074                 DPU_DEBUG("VBIF NRT is not defined");
1075         }
1076
1077         dpu_kms->reg_dma = msm_ioremap_quiet(dpu_kms->pdev, "regdma");
1078         if (IS_ERR(dpu_kms->reg_dma)) {
1079                 dpu_kms->reg_dma = NULL;
1080                 DPU_DEBUG("REG_DMA is not defined");
1081         }
1082
1083         dpu_kms_parse_data_bus_icc_path(dpu_kms);
1084
1085         rc = pm_runtime_resume_and_get(&dpu_kms->pdev->dev);
1086         if (rc < 0)
1087                 goto error;
1088
1089         dpu_kms->core_rev = readl_relaxed(dpu_kms->mmio + 0x0);
1090
1091         pr_info("dpu hardware revision:0x%x\n", dpu_kms->core_rev);
1092
1093         dpu_kms->catalog = dpu_hw_catalog_init(dpu_kms->core_rev);
1094         if (IS_ERR_OR_NULL(dpu_kms->catalog)) {
1095                 rc = PTR_ERR(dpu_kms->catalog);
1096                 if (!dpu_kms->catalog)
1097                         rc = -EINVAL;
1098                 DPU_ERROR("catalog init failed: %d\n", rc);
1099                 dpu_kms->catalog = NULL;
1100                 goto power_error;
1101         }
1102
1103         /*
1104          * Now we need to read the HW catalog and initialize resources such as
1105          * clocks, regulators, GDSC/MMAGIC, ioremap the register ranges etc
1106          */
1107         rc = _dpu_kms_mmu_init(dpu_kms);
1108         if (rc) {
1109                 DPU_ERROR("dpu_kms_mmu_init failed: %d\n", rc);
1110                 goto power_error;
1111         }
1112
1113         rc = dpu_rm_init(&dpu_kms->rm, dpu_kms->catalog, dpu_kms->mmio);
1114         if (rc) {
1115                 DPU_ERROR("rm init failed: %d\n", rc);
1116                 goto power_error;
1117         }
1118
1119         dpu_kms->rm_init = true;
1120
1121         dpu_kms->hw_mdp = dpu_hw_mdptop_init(MDP_TOP, dpu_kms->mmio,
1122                                              dpu_kms->catalog);
1123         if (IS_ERR(dpu_kms->hw_mdp)) {
1124                 rc = PTR_ERR(dpu_kms->hw_mdp);
1125                 DPU_ERROR("failed to get hw_mdp: %d\n", rc);
1126                 dpu_kms->hw_mdp = NULL;
1127                 goto power_error;
1128         }
1129
1130         for (i = 0; i < dpu_kms->catalog->vbif_count; i++) {
1131                 u32 vbif_idx = dpu_kms->catalog->vbif[i].id;
1132
1133                 dpu_kms->hw_vbif[i] = dpu_hw_vbif_init(vbif_idx,
1134                                 dpu_kms->vbif[vbif_idx], dpu_kms->catalog);
1135                 if (IS_ERR_OR_NULL(dpu_kms->hw_vbif[vbif_idx])) {
1136                         rc = PTR_ERR(dpu_kms->hw_vbif[vbif_idx]);
1137                         if (!dpu_kms->hw_vbif[vbif_idx])
1138                                 rc = -EINVAL;
1139                         DPU_ERROR("failed to init vbif %d: %d\n", vbif_idx, rc);
1140                         dpu_kms->hw_vbif[vbif_idx] = NULL;
1141                         goto power_error;
1142                 }
1143         }
1144
1145         rc = dpu_core_perf_init(&dpu_kms->perf, dev, dpu_kms->catalog,
1146                         msm_clk_bulk_get_clock(dpu_kms->clocks, dpu_kms->num_clocks, "core"));
1147         if (rc) {
1148                 DPU_ERROR("failed to init perf %d\n", rc);
1149                 goto perf_err;
1150         }
1151
1152         dpu_kms->hw_intr = dpu_hw_intr_init(dpu_kms->mmio, dpu_kms->catalog);
1153         if (IS_ERR_OR_NULL(dpu_kms->hw_intr)) {
1154                 rc = PTR_ERR(dpu_kms->hw_intr);
1155                 DPU_ERROR("hw_intr init failed: %d\n", rc);
1156                 dpu_kms->hw_intr = NULL;
1157                 goto hw_intr_init_err;
1158         }
1159
1160         dev->mode_config.min_width = 0;
1161         dev->mode_config.min_height = 0;
1162
1163         /*
1164          * max crtc width is equal to the max mixer width * 2 and max height is
1165          * is 4K
1166          */
1167         dev->mode_config.max_width =
1168                         dpu_kms->catalog->caps->max_mixer_width * 2;
1169         dev->mode_config.max_height = 4096;
1170
1171         dev->max_vblank_count = 0xffffffff;
1172         /* Disable vblank irqs aggressively for power-saving */
1173         dev->vblank_disable_immediate = true;
1174
1175         /*
1176          * _dpu_kms_drm_obj_init should create the DRM related objects
1177          * i.e. CRTCs, planes, encoders, connectors and so forth
1178          */
1179         rc = _dpu_kms_drm_obj_init(dpu_kms);
1180         if (rc) {
1181                 DPU_ERROR("modeset init failed: %d\n", rc);
1182                 goto drm_obj_init_err;
1183         }
1184
1185         dpu_vbif_init_memtypes(dpu_kms);
1186
1187         pm_runtime_put_sync(&dpu_kms->pdev->dev);
1188
1189         return 0;
1190
1191 drm_obj_init_err:
1192         dpu_core_perf_destroy(&dpu_kms->perf);
1193 hw_intr_init_err:
1194 perf_err:
1195 power_error:
1196         pm_runtime_put_sync(&dpu_kms->pdev->dev);
1197 error:
1198         _dpu_kms_hw_destroy(dpu_kms);
1199
1200         return rc;
1201 }
1202
1203 static int dpu_kms_init(struct drm_device *ddev)
1204 {
1205         struct msm_drm_private *priv = ddev->dev_private;
1206         struct device *dev = ddev->dev;
1207         struct platform_device *pdev = to_platform_device(dev);
1208         struct dpu_kms *dpu_kms;
1209         int irq;
1210         struct dev_pm_opp *opp;
1211         int ret = 0;
1212         unsigned long max_freq = ULONG_MAX;
1213
1214         dpu_kms = devm_kzalloc(&pdev->dev, sizeof(*dpu_kms), GFP_KERNEL);
1215         if (!dpu_kms)
1216                 return -ENOMEM;
1217
1218         ret = devm_pm_opp_set_clkname(dev, "core");
1219         if (ret)
1220                 return ret;
1221         /* OPP table is optional */
1222         ret = devm_pm_opp_of_add_table(dev);
1223         if (ret && ret != -ENODEV) {
1224                 dev_err(dev, "invalid OPP table in device tree\n");
1225                 return ret;
1226         }
1227
1228         ret = devm_clk_bulk_get_all(&pdev->dev, &dpu_kms->clocks);
1229         if (ret < 0) {
1230                 DPU_ERROR("failed to parse clocks, ret=%d\n", ret);
1231                 return ret;
1232         }
1233         dpu_kms->num_clocks = ret;
1234
1235         opp = dev_pm_opp_find_freq_floor(dev, &max_freq);
1236         if (!IS_ERR(opp))
1237                 dev_pm_opp_put(opp);
1238
1239         dev_pm_opp_set_rate(dev, max_freq);
1240
1241         ret = msm_kms_init(&dpu_kms->base, &kms_funcs);
1242         if (ret) {
1243                 DPU_ERROR("failed to init kms, ret=%d\n", ret);
1244                 return ret;
1245         }
1246         dpu_kms->dev = ddev;
1247         dpu_kms->pdev = pdev;
1248
1249         pm_runtime_enable(&pdev->dev);
1250         dpu_kms->rpm_enabled = true;
1251
1252         priv->kms = &dpu_kms->base;
1253
1254         irq = irq_of_parse_and_map(dpu_kms->pdev->dev.of_node, 0);
1255         if (!irq) {
1256                 DPU_ERROR("failed to get irq\n");
1257                 return -EINVAL;
1258         }
1259         dpu_kms->base.irq = irq;
1260
1261         return 0;
1262 }
1263
1264 static int dpu_dev_probe(struct platform_device *pdev)
1265 {
1266         return msm_drv_probe(&pdev->dev, dpu_kms_init);
1267 }
1268
1269 static int dpu_dev_remove(struct platform_device *pdev)
1270 {
1271         component_master_del(&pdev->dev, &msm_drm_ops);
1272
1273         return 0;
1274 }
1275
1276 static int __maybe_unused dpu_runtime_suspend(struct device *dev)
1277 {
1278         int i;
1279         struct platform_device *pdev = to_platform_device(dev);
1280         struct msm_drm_private *priv = platform_get_drvdata(pdev);
1281         struct dpu_kms *dpu_kms = to_dpu_kms(priv->kms);
1282
1283         /* Drop the performance state vote */
1284         dev_pm_opp_set_rate(dev, 0);
1285         clk_bulk_disable_unprepare(dpu_kms->num_clocks, dpu_kms->clocks);
1286
1287         for (i = 0; i < dpu_kms->num_paths; i++)
1288                 icc_set_bw(dpu_kms->path[i], 0, 0);
1289
1290         return 0;
1291 }
1292
1293 static int __maybe_unused dpu_runtime_resume(struct device *dev)
1294 {
1295         int rc = -1;
1296         struct platform_device *pdev = to_platform_device(dev);
1297         struct msm_drm_private *priv = platform_get_drvdata(pdev);
1298         struct dpu_kms *dpu_kms = to_dpu_kms(priv->kms);
1299         struct drm_encoder *encoder;
1300         struct drm_device *ddev;
1301
1302         ddev = dpu_kms->dev;
1303
1304         rc = clk_bulk_prepare_enable(dpu_kms->num_clocks, dpu_kms->clocks);
1305         if (rc) {
1306                 DPU_ERROR("clock enable failed rc:%d\n", rc);
1307                 return rc;
1308         }
1309
1310         dpu_vbif_init_memtypes(dpu_kms);
1311
1312         drm_for_each_encoder(encoder, ddev)
1313                 dpu_encoder_virt_runtime_resume(encoder);
1314
1315         return rc;
1316 }
1317
1318 static const struct dev_pm_ops dpu_pm_ops = {
1319         SET_RUNTIME_PM_OPS(dpu_runtime_suspend, dpu_runtime_resume, NULL)
1320         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1321                                 pm_runtime_force_resume)
1322         .prepare = msm_pm_prepare,
1323         .complete = msm_pm_complete,
1324 };
1325
1326 static const struct of_device_id dpu_dt_match[] = {
1327         { .compatible = "qcom,msm8998-dpu", },
1328         { .compatible = "qcom,qcm2290-dpu", },
1329         { .compatible = "qcom,sdm845-dpu", },
1330         { .compatible = "qcom,sc7180-dpu", },
1331         { .compatible = "qcom,sc7280-dpu", },
1332         { .compatible = "qcom,sc8180x-dpu", },
1333         { .compatible = "qcom,sm8150-dpu", },
1334         { .compatible = "qcom,sm8250-dpu", },
1335         {}
1336 };
1337 MODULE_DEVICE_TABLE(of, dpu_dt_match);
1338
1339 static struct platform_driver dpu_driver = {
1340         .probe = dpu_dev_probe,
1341         .remove = dpu_dev_remove,
1342         .shutdown = msm_drv_shutdown,
1343         .driver = {
1344                 .name = "msm_dpu",
1345                 .of_match_table = dpu_dt_match,
1346                 .pm = &dpu_pm_ops,
1347         },
1348 };
1349
1350 void __init msm_dpu_register(void)
1351 {
1352         platform_driver_register(&dpu_driver);
1353 }
1354
1355 void __exit msm_dpu_unregister(void)
1356 {
1357         platform_driver_unregister(&dpu_driver);
1358 }