1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2017 NVIDIA CORPORATION. All rights reserved. 4 */ 5 6 #include <linux/clk.h> 7 #include <linux/delay.h> 8 #include <linux/host1x.h> 9 #include <linux/module.h> 10 #include <linux/of.h> 11 #include <linux/of_device.h> 12 #include <linux/of_graph.h> 13 #include <linux/platform_device.h> 14 #include <linux/pm_runtime.h> 15 #include <linux/reset.h> 16 17 #include <drm/drm_atomic.h> 18 #include <drm/drm_atomic_helper.h> 19 #include <drm/drm_fourcc.h> 20 #include <drm/drm_probe_helper.h> 21 22 #include "drm.h" 23 #include "dc.h" 24 #include "plane.h" 25 26 #define NFB 24 27 28 static const u32 tegra_shared_plane_formats[] = { 29 DRM_FORMAT_ARGB1555, 30 DRM_FORMAT_RGB565, 31 DRM_FORMAT_RGBA5551, 32 DRM_FORMAT_ARGB8888, 33 DRM_FORMAT_ABGR8888, 34 /* new on Tegra114 */ 35 DRM_FORMAT_ABGR4444, 36 DRM_FORMAT_ABGR1555, 37 DRM_FORMAT_BGRA5551, 38 DRM_FORMAT_XRGB1555, 39 DRM_FORMAT_RGBX5551, 40 DRM_FORMAT_XBGR1555, 41 DRM_FORMAT_BGRX5551, 42 DRM_FORMAT_BGR565, 43 DRM_FORMAT_XRGB8888, 44 DRM_FORMAT_XBGR8888, 45 /* planar formats */ 46 DRM_FORMAT_UYVY, 47 DRM_FORMAT_YUYV, 48 DRM_FORMAT_YUV420, 49 DRM_FORMAT_YUV422, 50 }; 51 52 static const u64 tegra_shared_plane_modifiers[] = { 53 DRM_FORMAT_MOD_LINEAR, 54 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0), 55 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1), 56 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2), 57 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3), 58 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4), 59 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5), 60 /* 61 * The GPU sector layout is only supported on Tegra194, but these will 62 * be filtered out later on by ->format_mod_supported() on SoCs where 63 * it isn't supported. 64 */ 65 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT, 66 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT, 67 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT, 68 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT, 69 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT, 70 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT, 71 /* sentinel */ 72 DRM_FORMAT_MOD_INVALID 73 }; 74 75 static inline unsigned int tegra_plane_offset(struct tegra_plane *plane, 76 unsigned int offset) 77 { 78 if (offset >= 0x500 && offset <= 0x581) { 79 offset = 0x000 + (offset - 0x500); 80 return plane->offset + offset; 81 } 82 83 if (offset >= 0x700 && offset <= 0x73c) { 84 offset = 0x180 + (offset - 0x700); 85 return plane->offset + offset; 86 } 87 88 if (offset >= 0x800 && offset <= 0x83e) { 89 offset = 0x1c0 + (offset - 0x800); 90 return plane->offset + offset; 91 } 92 93 dev_WARN(plane->dc->dev, "invalid offset: %x\n", offset); 94 95 return plane->offset + offset; 96 } 97 98 static inline u32 tegra_plane_readl(struct tegra_plane *plane, 99 unsigned int offset) 100 { 101 return tegra_dc_readl(plane->dc, tegra_plane_offset(plane, offset)); 102 } 103 104 static inline void tegra_plane_writel(struct tegra_plane *plane, u32 value, 105 unsigned int offset) 106 { 107 tegra_dc_writel(plane->dc, value, tegra_plane_offset(plane, offset)); 108 } 109 110 static int tegra_windowgroup_enable(struct tegra_windowgroup *wgrp) 111 { 112 int err = 0; 113 114 mutex_lock(&wgrp->lock); 115 116 if (wgrp->usecount == 0) { 117 err = host1x_client_resume(wgrp->parent); 118 if (err < 0) { 119 dev_err(wgrp->parent->dev, "failed to resume: %d\n", err); 120 goto unlock; 121 } 122 123 reset_control_deassert(wgrp->rst); 124 } 125 126 wgrp->usecount++; 127 128 unlock: 129 mutex_unlock(&wgrp->lock); 130 return err; 131 } 132 133 static void tegra_windowgroup_disable(struct tegra_windowgroup *wgrp) 134 { 135 int err; 136 137 mutex_lock(&wgrp->lock); 138 139 if (wgrp->usecount == 1) { 140 err = reset_control_assert(wgrp->rst); 141 if (err < 0) { 142 pr_err("failed to assert reset for window group %u\n", 143 wgrp->index); 144 } 145 146 host1x_client_suspend(wgrp->parent); 147 } 148 149 wgrp->usecount--; 150 mutex_unlock(&wgrp->lock); 151 } 152 153 int tegra_display_hub_prepare(struct tegra_display_hub *hub) 154 { 155 unsigned int i; 156 157 /* 158 * XXX Enabling/disabling windowgroups needs to happen when the owner 159 * display controller is disabled. There's currently no good point at 160 * which this could be executed, so unconditionally enable all window 161 * groups for now. 162 */ 163 for (i = 0; i < hub->soc->num_wgrps; i++) { 164 struct tegra_windowgroup *wgrp = &hub->wgrps[i]; 165 166 /* Skip orphaned window group whose parent DC is disabled */ 167 if (wgrp->parent) 168 tegra_windowgroup_enable(wgrp); 169 } 170 171 return 0; 172 } 173 174 void tegra_display_hub_cleanup(struct tegra_display_hub *hub) 175 { 176 unsigned int i; 177 178 /* 179 * XXX Remove this once window groups can be more fine-grainedly 180 * enabled and disabled. 181 */ 182 for (i = 0; i < hub->soc->num_wgrps; i++) { 183 struct tegra_windowgroup *wgrp = &hub->wgrps[i]; 184 185 /* Skip orphaned window group whose parent DC is disabled */ 186 if (wgrp->parent) 187 tegra_windowgroup_disable(wgrp); 188 } 189 } 190 191 static void tegra_shared_plane_update(struct tegra_plane *plane) 192 { 193 struct tegra_dc *dc = plane->dc; 194 unsigned long timeout; 195 u32 mask, value; 196 197 mask = COMMON_UPDATE | WIN_A_UPDATE << plane->base.index; 198 tegra_dc_writel(dc, mask, DC_CMD_STATE_CONTROL); 199 200 timeout = jiffies + msecs_to_jiffies(1000); 201 202 while (time_before(jiffies, timeout)) { 203 value = tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); 204 if ((value & mask) == 0) 205 break; 206 207 usleep_range(100, 400); 208 } 209 } 210 211 static void tegra_shared_plane_activate(struct tegra_plane *plane) 212 { 213 struct tegra_dc *dc = plane->dc; 214 unsigned long timeout; 215 u32 mask, value; 216 217 mask = COMMON_ACTREQ | WIN_A_ACT_REQ << plane->base.index; 218 tegra_dc_writel(dc, mask, DC_CMD_STATE_CONTROL); 219 220 timeout = jiffies + msecs_to_jiffies(1000); 221 222 while (time_before(jiffies, timeout)) { 223 value = tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); 224 if ((value & mask) == 0) 225 break; 226 227 usleep_range(100, 400); 228 } 229 } 230 231 static unsigned int 232 tegra_shared_plane_get_owner(struct tegra_plane *plane, struct tegra_dc *dc) 233 { 234 unsigned int offset = 235 tegra_plane_offset(plane, DC_WIN_CORE_WINDOWGROUP_SET_CONTROL); 236 237 return tegra_dc_readl(dc, offset) & OWNER_MASK; 238 } 239 240 static bool tegra_dc_owns_shared_plane(struct tegra_dc *dc, 241 struct tegra_plane *plane) 242 { 243 struct device *dev = dc->dev; 244 245 if (tegra_shared_plane_get_owner(plane, dc) == dc->pipe) { 246 if (plane->dc == dc) 247 return true; 248 249 dev_WARN(dev, "head %u owns window %u but is not attached\n", 250 dc->pipe, plane->index); 251 } 252 253 return false; 254 } 255 256 static int tegra_shared_plane_set_owner(struct tegra_plane *plane, 257 struct tegra_dc *new) 258 { 259 unsigned int offset = 260 tegra_plane_offset(plane, DC_WIN_CORE_WINDOWGROUP_SET_CONTROL); 261 struct tegra_dc *old = plane->dc, *dc = new ? new : old; 262 struct device *dev = new ? new->dev : old->dev; 263 unsigned int owner, index = plane->index; 264 u32 value; 265 266 value = tegra_dc_readl(dc, offset); 267 owner = value & OWNER_MASK; 268 269 if (new && (owner != OWNER_MASK && owner != new->pipe)) { 270 dev_WARN(dev, "window %u owned by head %u\n", index, owner); 271 return -EBUSY; 272 } 273 274 /* 275 * This seems to happen whenever the head has been disabled with one 276 * or more windows being active. This is harmless because we'll just 277 * reassign the window to the new head anyway. 278 */ 279 if (old && owner == OWNER_MASK) 280 dev_dbg(dev, "window %u not owned by head %u but %u\n", index, 281 old->pipe, owner); 282 283 value &= ~OWNER_MASK; 284 285 if (new) 286 value |= OWNER(new->pipe); 287 else 288 value |= OWNER_MASK; 289 290 tegra_dc_writel(dc, value, offset); 291 292 plane->dc = new; 293 294 return 0; 295 } 296 297 static void tegra_shared_plane_setup_scaler(struct tegra_plane *plane) 298 { 299 static const unsigned int coeffs[192] = { 300 0x00000000, 0x3c70e400, 0x3bb037e4, 0x0c51cc9c, 301 0x00100001, 0x3bf0dbfa, 0x3d00f406, 0x3fe003ff, 302 0x00300002, 0x3b80cbf5, 0x3da1040d, 0x3fb003fe, 303 0x00400002, 0x3b20bff1, 0x3e511015, 0x3f9003fc, 304 0x00500002, 0x3ad0b3ed, 0x3f21201d, 0x3f5003fb, 305 0x00500003, 0x3aa0a3e9, 0x3ff13026, 0x3f2007f9, 306 0x00500403, 0x3a7097e6, 0x00e1402f, 0x3ee007f7, 307 0x00500403, 0x3a608be4, 0x01d14c38, 0x3ea00bf6, 308 0x00500403, 0x3a507fe2, 0x02e15c42, 0x3e500ff4, 309 0x00500402, 0x3a6073e1, 0x03f16c4d, 0x3e000ff2, 310 0x00400402, 0x3a706be0, 0x05117858, 0x3db013f0, 311 0x00300402, 0x3a905fe0, 0x06318863, 0x3d6017ee, 312 0x00300402, 0x3ab057e0, 0x0771986e, 0x3d001beb, 313 0x00200001, 0x3af04fe1, 0x08a1a47a, 0x3cb023e9, 314 0x00100001, 0x3b2047e2, 0x09e1b485, 0x3c6027e7, 315 0x00100000, 0x3b703fe2, 0x0b11c091, 0x3c002fe6, 316 0x3f203800, 0x0391103f, 0x3ff0a014, 0x0811606c, 317 0x3f2037ff, 0x0351083c, 0x03e11842, 0x3f203c00, 318 0x3f302fff, 0x03010439, 0x04311c45, 0x3f104401, 319 0x3f302fff, 0x02c0fc35, 0x04812448, 0x3f104802, 320 0x3f4027ff, 0x0270f832, 0x04c1284b, 0x3f205003, 321 0x3f4023ff, 0x0230f030, 0x0511304e, 0x3f205403, 322 0x3f601fff, 0x01f0e82d, 0x05613451, 0x3f205c04, 323 0x3f701bfe, 0x01b0e02a, 0x05a13c54, 0x3f306006, 324 0x3f7017fe, 0x0170d827, 0x05f14057, 0x3f406807, 325 0x3f8017ff, 0x0140d424, 0x0641445a, 0x3f406c08, 326 0x3fa013ff, 0x0100cc22, 0x0681485d, 0x3f507409, 327 0x3fa00fff, 0x00d0c41f, 0x06d14c60, 0x3f607c0b, 328 0x3fc00fff, 0x0090bc1c, 0x07115063, 0x3f80840c, 329 0x3fd00bff, 0x0070b41a, 0x07515465, 0x3f908c0e, 330 0x3fe007ff, 0x0040b018, 0x07915868, 0x3fb0900f, 331 0x3ff00400, 0x0010a816, 0x07d15c6a, 0x3fd09811, 332 0x00a04c0e, 0x0460f442, 0x0240a827, 0x05c15859, 333 0x0090440d, 0x0440f040, 0x0480fc43, 0x00b05010, 334 0x0080400c, 0x0410ec3e, 0x04910044, 0x00d05411, 335 0x0070380b, 0x03f0e83d, 0x04b10846, 0x00e05812, 336 0x0060340a, 0x03d0e43b, 0x04d10c48, 0x00f06013, 337 0x00503009, 0x03b0e039, 0x04e11449, 0x01106415, 338 0x00402c08, 0x0390d838, 0x05011c4b, 0x01206c16, 339 0x00302807, 0x0370d436, 0x0511204c, 0x01407018, 340 0x00302406, 0x0340d034, 0x0531244e, 0x01507419, 341 0x00202005, 0x0320cc32, 0x05412c50, 0x01707c1b, 342 0x00101c04, 0x0300c431, 0x05613451, 0x0180801d, 343 0x00101803, 0x02e0c02f, 0x05713853, 0x01a0881e, 344 0x00101002, 0x02b0bc2d, 0x05814054, 0x01c08c20, 345 0x00000c02, 0x02a0b82c, 0x05914455, 0x01e09421, 346 0x00000801, 0x0280b02a, 0x05a14c57, 0x02009c23, 347 0x00000400, 0x0260ac28, 0x05b15458, 0x0220a025, 348 }; 349 unsigned int ratio, row, column; 350 351 for (ratio = 0; ratio <= 2; ratio++) { 352 for (row = 0; row <= 15; row++) { 353 for (column = 0; column <= 3; column++) { 354 unsigned int index = (ratio << 6) + (row << 2) + column; 355 u32 value; 356 357 value = COEFF_INDEX(index) | COEFF_DATA(coeffs[index]); 358 tegra_plane_writel(plane, value, 359 DC_WIN_WINDOWGROUP_SET_INPUT_SCALER_COEFF); 360 } 361 } 362 } 363 } 364 365 static void tegra_dc_assign_shared_plane(struct tegra_dc *dc, 366 struct tegra_plane *plane) 367 { 368 u32 value; 369 int err; 370 371 if (!tegra_dc_owns_shared_plane(dc, plane)) { 372 err = tegra_shared_plane_set_owner(plane, dc); 373 if (err < 0) 374 return; 375 } 376 377 value = tegra_plane_readl(plane, DC_WIN_CORE_IHUB_LINEBUF_CONFIG); 378 value |= MODE_FOUR_LINES; 379 tegra_plane_writel(plane, value, DC_WIN_CORE_IHUB_LINEBUF_CONFIG); 380 381 value = tegra_plane_readl(plane, DC_WIN_CORE_IHUB_WGRP_FETCH_METER); 382 value = SLOTS(1); 383 tegra_plane_writel(plane, value, DC_WIN_CORE_IHUB_WGRP_FETCH_METER); 384 385 /* disable watermark */ 386 value = tegra_plane_readl(plane, DC_WIN_CORE_IHUB_WGRP_LATENCY_CTLA); 387 value &= ~LATENCY_CTL_MODE_ENABLE; 388 tegra_plane_writel(plane, value, DC_WIN_CORE_IHUB_WGRP_LATENCY_CTLA); 389 390 value = tegra_plane_readl(plane, DC_WIN_CORE_IHUB_WGRP_LATENCY_CTLB); 391 value |= WATERMARK_MASK; 392 tegra_plane_writel(plane, value, DC_WIN_CORE_IHUB_WGRP_LATENCY_CTLB); 393 394 /* pipe meter */ 395 value = tegra_plane_readl(plane, DC_WIN_CORE_PRECOMP_WGRP_PIPE_METER); 396 value = PIPE_METER_INT(0) | PIPE_METER_FRAC(0); 397 tegra_plane_writel(plane, value, DC_WIN_CORE_PRECOMP_WGRP_PIPE_METER); 398 399 /* mempool entries */ 400 value = tegra_plane_readl(plane, DC_WIN_CORE_IHUB_WGRP_POOL_CONFIG); 401 value = MEMPOOL_ENTRIES(0x331); 402 tegra_plane_writel(plane, value, DC_WIN_CORE_IHUB_WGRP_POOL_CONFIG); 403 404 value = tegra_plane_readl(plane, DC_WIN_CORE_IHUB_THREAD_GROUP); 405 value &= ~THREAD_NUM_MASK; 406 value |= THREAD_NUM(plane->base.index); 407 value |= THREAD_GROUP_ENABLE; 408 tegra_plane_writel(plane, value, DC_WIN_CORE_IHUB_THREAD_GROUP); 409 410 tegra_shared_plane_setup_scaler(plane); 411 412 tegra_shared_plane_update(plane); 413 tegra_shared_plane_activate(plane); 414 } 415 416 static void tegra_dc_remove_shared_plane(struct tegra_dc *dc, 417 struct tegra_plane *plane) 418 { 419 tegra_shared_plane_set_owner(plane, NULL); 420 } 421 422 static int tegra_shared_plane_atomic_check(struct drm_plane *plane, 423 struct drm_atomic_state *state) 424 { 425 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, 426 plane); 427 struct tegra_plane_state *plane_state = to_tegra_plane_state(new_plane_state); 428 struct tegra_shared_plane *tegra = to_tegra_shared_plane(plane); 429 struct tegra_bo_tiling *tiling = &plane_state->tiling; 430 struct tegra_dc *dc = to_tegra_dc(new_plane_state->crtc); 431 int err; 432 433 /* no need for further checks if the plane is being disabled */ 434 if (!new_plane_state->crtc || !new_plane_state->fb) 435 return 0; 436 437 err = tegra_plane_format(new_plane_state->fb->format->format, 438 &plane_state->format, 439 &plane_state->swap); 440 if (err < 0) 441 return err; 442 443 err = tegra_fb_get_tiling(new_plane_state->fb, tiling); 444 if (err < 0) 445 return err; 446 447 if (tiling->mode == TEGRA_BO_TILING_MODE_BLOCK && 448 !dc->soc->supports_block_linear) { 449 DRM_ERROR("hardware doesn't support block linear mode\n"); 450 return -EINVAL; 451 } 452 453 if (tiling->sector_layout == TEGRA_BO_SECTOR_LAYOUT_GPU && 454 !dc->soc->supports_sector_layout) { 455 DRM_ERROR("hardware doesn't support GPU sector layout\n"); 456 return -EINVAL; 457 } 458 459 /* 460 * Tegra doesn't support different strides for U and V planes so we 461 * error out if the user tries to display a framebuffer with such a 462 * configuration. 463 */ 464 if (new_plane_state->fb->format->num_planes > 2) { 465 if (new_plane_state->fb->pitches[2] != new_plane_state->fb->pitches[1]) { 466 DRM_ERROR("unsupported UV-plane configuration\n"); 467 return -EINVAL; 468 } 469 } 470 471 /* XXX scaling is not yet supported, add a check here */ 472 473 err = tegra_plane_state_add(&tegra->base, new_plane_state); 474 if (err < 0) 475 return err; 476 477 return 0; 478 } 479 480 static void tegra_shared_plane_atomic_disable(struct drm_plane *plane, 481 struct drm_atomic_state *state) 482 { 483 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, 484 plane); 485 struct tegra_plane *p = to_tegra_plane(plane); 486 struct tegra_dc *dc; 487 u32 value; 488 int err; 489 490 /* rien ne va plus */ 491 if (!old_state || !old_state->crtc) 492 return; 493 494 dc = to_tegra_dc(old_state->crtc); 495 496 err = host1x_client_resume(&dc->client); 497 if (err < 0) { 498 dev_err(dc->dev, "failed to resume: %d\n", err); 499 return; 500 } 501 502 /* 503 * XXX Legacy helpers seem to sometimes call ->atomic_disable() even 504 * on planes that are already disabled. Make sure we fallback to the 505 * head for this particular state instead of crashing. 506 */ 507 if (WARN_ON(p->dc == NULL)) 508 p->dc = dc; 509 510 value = tegra_plane_readl(p, DC_WIN_WIN_OPTIONS); 511 value &= ~WIN_ENABLE; 512 tegra_plane_writel(p, value, DC_WIN_WIN_OPTIONS); 513 514 tegra_dc_remove_shared_plane(dc, p); 515 516 host1x_client_suspend(&dc->client); 517 } 518 519 static inline u32 compute_phase_incr(fixed20_12 in, unsigned int out) 520 { 521 u64 tmp, tmp1, tmp2; 522 523 tmp = (u64)dfixed_trunc(in); 524 tmp2 = (u64)out; 525 tmp1 = (tmp << NFB) + (tmp2 >> 1); 526 do_div(tmp1, tmp2); 527 528 return lower_32_bits(tmp1); 529 } 530 531 static void tegra_shared_plane_atomic_update(struct drm_plane *plane, 532 struct drm_atomic_state *state) 533 { 534 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 535 plane); 536 struct tegra_plane_state *tegra_plane_state = to_tegra_plane_state(new_state); 537 struct tegra_dc *dc = to_tegra_dc(new_state->crtc); 538 unsigned int zpos = new_state->normalized_zpos; 539 struct drm_framebuffer *fb = new_state->fb; 540 struct tegra_plane *p = to_tegra_plane(plane); 541 u32 value, min_width, bypass = 0; 542 dma_addr_t base, addr_flag = 0; 543 unsigned int bpc; 544 bool yuv, planar; 545 int err; 546 547 /* rien ne va plus */ 548 if (!new_state->crtc || !new_state->fb) 549 return; 550 551 if (!new_state->visible) { 552 tegra_shared_plane_atomic_disable(plane, state); 553 return; 554 } 555 556 err = host1x_client_resume(&dc->client); 557 if (err < 0) { 558 dev_err(dc->dev, "failed to resume: %d\n", err); 559 return; 560 } 561 562 yuv = tegra_plane_format_is_yuv(tegra_plane_state->format, &planar, &bpc); 563 564 tegra_dc_assign_shared_plane(dc, p); 565 566 tegra_plane_writel(p, VCOUNTER, DC_WIN_CORE_ACT_CONTROL); 567 568 /* blending */ 569 value = BLEND_FACTOR_DST_ALPHA_ZERO | BLEND_FACTOR_SRC_ALPHA_K2 | 570 BLEND_FACTOR_DST_COLOR_NEG_K1_TIMES_SRC | 571 BLEND_FACTOR_SRC_COLOR_K1_TIMES_SRC; 572 tegra_plane_writel(p, value, DC_WIN_BLEND_MATCH_SELECT); 573 574 value = BLEND_FACTOR_DST_ALPHA_ZERO | BLEND_FACTOR_SRC_ALPHA_K2 | 575 BLEND_FACTOR_DST_COLOR_NEG_K1_TIMES_SRC | 576 BLEND_FACTOR_SRC_COLOR_K1_TIMES_SRC; 577 tegra_plane_writel(p, value, DC_WIN_BLEND_NOMATCH_SELECT); 578 579 value = K2(255) | K1(255) | WINDOW_LAYER_DEPTH(255 - zpos); 580 tegra_plane_writel(p, value, DC_WIN_BLEND_LAYER_CONTROL); 581 582 /* scaling */ 583 min_width = min(new_state->src_w >> 16, new_state->crtc_w); 584 585 value = tegra_plane_readl(p, DC_WINC_PRECOMP_WGRP_PIPE_CAPC); 586 587 if (min_width < MAX_PIXELS_5TAP444(value)) { 588 value = HORIZONTAL_TAPS_5 | VERTICAL_TAPS_5; 589 } else { 590 value = tegra_plane_readl(p, DC_WINC_PRECOMP_WGRP_PIPE_CAPE); 591 592 if (min_width < MAX_PIXELS_2TAP444(value)) 593 value = HORIZONTAL_TAPS_2 | VERTICAL_TAPS_2; 594 else 595 dev_err(dc->dev, "invalid minimum width: %u\n", min_width); 596 } 597 598 value = HORIZONTAL_TAPS_5 | VERTICAL_TAPS_5; 599 tegra_plane_writel(p, value, DC_WIN_WINDOWGROUP_SET_CONTROL_INPUT_SCALER); 600 601 if (new_state->src_w != new_state->crtc_w << 16) { 602 fixed20_12 width = dfixed_init(new_state->src_w >> 16); 603 u32 incr = compute_phase_incr(width, new_state->crtc_w) & ~0x1; 604 u32 init = (1 << (NFB - 1)) + (incr >> 1); 605 606 tegra_plane_writel(p, incr, DC_WIN_SET_INPUT_SCALER_HPHASE_INCR); 607 tegra_plane_writel(p, init, DC_WIN_SET_INPUT_SCALER_H_START_PHASE); 608 } else { 609 bypass |= INPUT_SCALER_HBYPASS; 610 } 611 612 if (new_state->src_h != new_state->crtc_h << 16) { 613 fixed20_12 height = dfixed_init(new_state->src_h >> 16); 614 u32 incr = compute_phase_incr(height, new_state->crtc_h) & ~0x1; 615 u32 init = (1 << (NFB - 1)) + (incr >> 1); 616 617 tegra_plane_writel(p, incr, DC_WIN_SET_INPUT_SCALER_VPHASE_INCR); 618 tegra_plane_writel(p, init, DC_WIN_SET_INPUT_SCALER_V_START_PHASE); 619 } else { 620 bypass |= INPUT_SCALER_VBYPASS; 621 } 622 623 tegra_plane_writel(p, bypass, DC_WIN_WINDOWGROUP_SET_INPUT_SCALER_USAGE); 624 625 /* disable compression */ 626 tegra_plane_writel(p, 0, DC_WINBUF_CDE_CONTROL); 627 628 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT 629 /* 630 * Physical address bit 39 in Tegra194 is used as a switch for special 631 * logic that swizzles the memory using either the legacy Tegra or the 632 * dGPU sector layout. 633 */ 634 if (tegra_plane_state->tiling.sector_layout == TEGRA_BO_SECTOR_LAYOUT_GPU) 635 addr_flag = BIT_ULL(39); 636 #endif 637 638 base = tegra_plane_state->iova[0] + fb->offsets[0]; 639 base |= addr_flag; 640 641 tegra_plane_writel(p, tegra_plane_state->format, DC_WIN_COLOR_DEPTH); 642 tegra_plane_writel(p, 0, DC_WIN_PRECOMP_WGRP_PARAMS); 643 644 value = V_POSITION(new_state->crtc_y) | 645 H_POSITION(new_state->crtc_x); 646 tegra_plane_writel(p, value, DC_WIN_POSITION); 647 648 value = V_SIZE(new_state->crtc_h) | H_SIZE(new_state->crtc_w); 649 tegra_plane_writel(p, value, DC_WIN_SIZE); 650 651 value = WIN_ENABLE | COLOR_EXPAND; 652 tegra_plane_writel(p, value, DC_WIN_WIN_OPTIONS); 653 654 value = V_SIZE(new_state->src_h >> 16) | H_SIZE(new_state->src_w >> 16); 655 tegra_plane_writel(p, value, DC_WIN_CROPPED_SIZE); 656 657 tegra_plane_writel(p, upper_32_bits(base), DC_WINBUF_START_ADDR_HI); 658 tegra_plane_writel(p, lower_32_bits(base), DC_WINBUF_START_ADDR); 659 660 value = PITCH(fb->pitches[0]); 661 tegra_plane_writel(p, value, DC_WIN_PLANAR_STORAGE); 662 663 if (yuv && planar) { 664 base = tegra_plane_state->iova[1] + fb->offsets[1]; 665 base |= addr_flag; 666 667 tegra_plane_writel(p, upper_32_bits(base), DC_WINBUF_START_ADDR_HI_U); 668 tegra_plane_writel(p, lower_32_bits(base), DC_WINBUF_START_ADDR_U); 669 670 base = tegra_plane_state->iova[2] + fb->offsets[2]; 671 base |= addr_flag; 672 673 tegra_plane_writel(p, upper_32_bits(base), DC_WINBUF_START_ADDR_HI_V); 674 tegra_plane_writel(p, lower_32_bits(base), DC_WINBUF_START_ADDR_V); 675 676 value = PITCH_U(fb->pitches[2]) | PITCH_V(fb->pitches[2]); 677 tegra_plane_writel(p, value, DC_WIN_PLANAR_STORAGE_UV); 678 } else { 679 tegra_plane_writel(p, 0, DC_WINBUF_START_ADDR_U); 680 tegra_plane_writel(p, 0, DC_WINBUF_START_ADDR_HI_U); 681 tegra_plane_writel(p, 0, DC_WINBUF_START_ADDR_V); 682 tegra_plane_writel(p, 0, DC_WINBUF_START_ADDR_HI_V); 683 tegra_plane_writel(p, 0, DC_WIN_PLANAR_STORAGE_UV); 684 } 685 686 value = CLAMP_BEFORE_BLEND | INPUT_RANGE_FULL; 687 688 if (yuv) { 689 if (bpc < 12) 690 value |= DEGAMMA_YUV8_10; 691 else 692 value |= DEGAMMA_YUV12; 693 694 /* XXX parameterize */ 695 value |= COLOR_SPACE_YUV_2020; 696 } else { 697 if (!tegra_plane_format_is_indexed(tegra_plane_state->format)) 698 value |= DEGAMMA_SRGB; 699 } 700 701 tegra_plane_writel(p, value, DC_WIN_SET_PARAMS); 702 703 value = OFFSET_X(new_state->src_y >> 16) | 704 OFFSET_Y(new_state->src_x >> 16); 705 tegra_plane_writel(p, value, DC_WINBUF_CROPPED_POINT); 706 707 if (dc->soc->supports_block_linear) { 708 unsigned long height = tegra_plane_state->tiling.value; 709 710 /* XXX */ 711 switch (tegra_plane_state->tiling.mode) { 712 case TEGRA_BO_TILING_MODE_PITCH: 713 value = DC_WINBUF_SURFACE_KIND_BLOCK_HEIGHT(0) | 714 DC_WINBUF_SURFACE_KIND_PITCH; 715 break; 716 717 /* XXX not supported on Tegra186 and later */ 718 case TEGRA_BO_TILING_MODE_TILED: 719 value = DC_WINBUF_SURFACE_KIND_TILED; 720 break; 721 722 case TEGRA_BO_TILING_MODE_BLOCK: 723 value = DC_WINBUF_SURFACE_KIND_BLOCK_HEIGHT(height) | 724 DC_WINBUF_SURFACE_KIND_BLOCK; 725 break; 726 } 727 728 tegra_plane_writel(p, value, DC_WINBUF_SURFACE_KIND); 729 } 730 731 /* disable gamut CSC */ 732 value = tegra_plane_readl(p, DC_WIN_WINDOW_SET_CONTROL); 733 value &= ~CONTROL_CSC_ENABLE; 734 tegra_plane_writel(p, value, DC_WIN_WINDOW_SET_CONTROL); 735 736 host1x_client_suspend(&dc->client); 737 } 738 739 static const struct drm_plane_helper_funcs tegra_shared_plane_helper_funcs = { 740 .prepare_fb = tegra_plane_prepare_fb, 741 .cleanup_fb = tegra_plane_cleanup_fb, 742 .atomic_check = tegra_shared_plane_atomic_check, 743 .atomic_update = tegra_shared_plane_atomic_update, 744 .atomic_disable = tegra_shared_plane_atomic_disable, 745 }; 746 747 struct drm_plane *tegra_shared_plane_create(struct drm_device *drm, 748 struct tegra_dc *dc, 749 unsigned int wgrp, 750 unsigned int index) 751 { 752 enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY; 753 struct tegra_drm *tegra = drm->dev_private; 754 struct tegra_display_hub *hub = tegra->hub; 755 struct tegra_shared_plane *plane; 756 unsigned int possible_crtcs; 757 unsigned int num_formats; 758 const u64 *modifiers; 759 struct drm_plane *p; 760 const u32 *formats; 761 int err; 762 763 plane = kzalloc(sizeof(*plane), GFP_KERNEL); 764 if (!plane) 765 return ERR_PTR(-ENOMEM); 766 767 plane->base.offset = 0x0a00 + 0x0300 * index; 768 plane->base.index = index; 769 770 plane->wgrp = &hub->wgrps[wgrp]; 771 plane->wgrp->parent = &dc->client; 772 773 p = &plane->base.base; 774 775 /* planes can be assigned to arbitrary CRTCs */ 776 possible_crtcs = BIT(tegra->num_crtcs) - 1; 777 778 num_formats = ARRAY_SIZE(tegra_shared_plane_formats); 779 formats = tegra_shared_plane_formats; 780 modifiers = tegra_shared_plane_modifiers; 781 782 err = drm_universal_plane_init(drm, p, possible_crtcs, 783 &tegra_plane_funcs, formats, 784 num_formats, modifiers, type, NULL); 785 if (err < 0) { 786 kfree(plane); 787 return ERR_PTR(err); 788 } 789 790 drm_plane_helper_add(p, &tegra_shared_plane_helper_funcs); 791 drm_plane_create_zpos_property(p, 0, 0, 255); 792 793 return p; 794 } 795 796 static struct drm_private_state * 797 tegra_display_hub_duplicate_state(struct drm_private_obj *obj) 798 { 799 struct tegra_display_hub_state *state; 800 801 state = kmemdup(obj->state, sizeof(*state), GFP_KERNEL); 802 if (!state) 803 return NULL; 804 805 __drm_atomic_helper_private_obj_duplicate_state(obj, &state->base); 806 807 return &state->base; 808 } 809 810 static void tegra_display_hub_destroy_state(struct drm_private_obj *obj, 811 struct drm_private_state *state) 812 { 813 struct tegra_display_hub_state *hub_state = 814 to_tegra_display_hub_state(state); 815 816 kfree(hub_state); 817 } 818 819 static const struct drm_private_state_funcs tegra_display_hub_state_funcs = { 820 .atomic_duplicate_state = tegra_display_hub_duplicate_state, 821 .atomic_destroy_state = tegra_display_hub_destroy_state, 822 }; 823 824 static struct tegra_display_hub_state * 825 tegra_display_hub_get_state(struct tegra_display_hub *hub, 826 struct drm_atomic_state *state) 827 { 828 struct drm_private_state *priv; 829 830 priv = drm_atomic_get_private_obj_state(state, &hub->base); 831 if (IS_ERR(priv)) 832 return ERR_CAST(priv); 833 834 return to_tegra_display_hub_state(priv); 835 } 836 837 int tegra_display_hub_atomic_check(struct drm_device *drm, 838 struct drm_atomic_state *state) 839 { 840 struct tegra_drm *tegra = drm->dev_private; 841 struct tegra_display_hub_state *hub_state; 842 struct drm_crtc_state *old, *new; 843 struct drm_crtc *crtc; 844 unsigned int i; 845 846 if (!tegra->hub) 847 return 0; 848 849 hub_state = tegra_display_hub_get_state(tegra->hub, state); 850 if (IS_ERR(hub_state)) 851 return PTR_ERR(hub_state); 852 853 /* 854 * The display hub display clock needs to be fed by the display clock 855 * with the highest frequency to ensure proper functioning of all the 856 * displays. 857 * 858 * Note that this isn't used before Tegra186, but it doesn't hurt and 859 * conditionalizing it would make the code less clean. 860 */ 861 for_each_oldnew_crtc_in_state(state, crtc, old, new, i) { 862 struct tegra_dc_state *dc = to_dc_state(new); 863 864 if (new->active) { 865 if (!hub_state->clk || dc->pclk > hub_state->rate) { 866 hub_state->dc = to_tegra_dc(dc->base.crtc); 867 hub_state->clk = hub_state->dc->clk; 868 hub_state->rate = dc->pclk; 869 } 870 } 871 } 872 873 return 0; 874 } 875 876 static void tegra_display_hub_update(struct tegra_dc *dc) 877 { 878 u32 value; 879 int err; 880 881 err = host1x_client_resume(&dc->client); 882 if (err < 0) { 883 dev_err(dc->dev, "failed to resume: %d\n", err); 884 return; 885 } 886 887 value = tegra_dc_readl(dc, DC_CMD_IHUB_COMMON_MISC_CTL); 888 value &= ~LATENCY_EVENT; 889 tegra_dc_writel(dc, value, DC_CMD_IHUB_COMMON_MISC_CTL); 890 891 value = tegra_dc_readl(dc, DC_DISP_IHUB_COMMON_DISPLAY_FETCH_METER); 892 value = CURS_SLOTS(1) | WGRP_SLOTS(1); 893 tegra_dc_writel(dc, value, DC_DISP_IHUB_COMMON_DISPLAY_FETCH_METER); 894 895 tegra_dc_writel(dc, COMMON_UPDATE, DC_CMD_STATE_CONTROL); 896 tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); 897 tegra_dc_writel(dc, COMMON_ACTREQ, DC_CMD_STATE_CONTROL); 898 tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); 899 900 host1x_client_suspend(&dc->client); 901 } 902 903 void tegra_display_hub_atomic_commit(struct drm_device *drm, 904 struct drm_atomic_state *state) 905 { 906 struct tegra_drm *tegra = drm->dev_private; 907 struct tegra_display_hub *hub = tegra->hub; 908 struct tegra_display_hub_state *hub_state; 909 struct device *dev = hub->client.dev; 910 int err; 911 912 hub_state = to_tegra_display_hub_state(hub->base.state); 913 914 if (hub_state->clk) { 915 err = clk_set_rate(hub_state->clk, hub_state->rate); 916 if (err < 0) 917 dev_err(dev, "failed to set rate of %pC to %lu Hz\n", 918 hub_state->clk, hub_state->rate); 919 920 err = clk_set_parent(hub->clk_disp, hub_state->clk); 921 if (err < 0) 922 dev_err(dev, "failed to set parent of %pC to %pC: %d\n", 923 hub->clk_disp, hub_state->clk, err); 924 } 925 926 if (hub_state->dc) 927 tegra_display_hub_update(hub_state->dc); 928 } 929 930 static int tegra_display_hub_init(struct host1x_client *client) 931 { 932 struct tegra_display_hub *hub = to_tegra_display_hub(client); 933 struct drm_device *drm = dev_get_drvdata(client->host); 934 struct tegra_drm *tegra = drm->dev_private; 935 struct tegra_display_hub_state *state; 936 937 state = kzalloc(sizeof(*state), GFP_KERNEL); 938 if (!state) 939 return -ENOMEM; 940 941 drm_atomic_private_obj_init(drm, &hub->base, &state->base, 942 &tegra_display_hub_state_funcs); 943 944 tegra->hub = hub; 945 946 return 0; 947 } 948 949 static int tegra_display_hub_exit(struct host1x_client *client) 950 { 951 struct drm_device *drm = dev_get_drvdata(client->host); 952 struct tegra_drm *tegra = drm->dev_private; 953 954 drm_atomic_private_obj_fini(&tegra->hub->base); 955 tegra->hub = NULL; 956 957 return 0; 958 } 959 960 static int tegra_display_hub_runtime_suspend(struct host1x_client *client) 961 { 962 struct tegra_display_hub *hub = to_tegra_display_hub(client); 963 struct device *dev = client->dev; 964 unsigned int i = hub->num_heads; 965 int err; 966 967 err = reset_control_assert(hub->rst); 968 if (err < 0) 969 return err; 970 971 while (i--) 972 clk_disable_unprepare(hub->clk_heads[i]); 973 974 clk_disable_unprepare(hub->clk_hub); 975 clk_disable_unprepare(hub->clk_dsc); 976 clk_disable_unprepare(hub->clk_disp); 977 978 pm_runtime_put_sync(dev); 979 980 return 0; 981 } 982 983 static int tegra_display_hub_runtime_resume(struct host1x_client *client) 984 { 985 struct tegra_display_hub *hub = to_tegra_display_hub(client); 986 struct device *dev = client->dev; 987 unsigned int i; 988 int err; 989 990 err = pm_runtime_resume_and_get(dev); 991 if (err < 0) { 992 dev_err(dev, "failed to get runtime PM: %d\n", err); 993 return err; 994 } 995 996 err = clk_prepare_enable(hub->clk_disp); 997 if (err < 0) 998 goto put_rpm; 999 1000 err = clk_prepare_enable(hub->clk_dsc); 1001 if (err < 0) 1002 goto disable_disp; 1003 1004 err = clk_prepare_enable(hub->clk_hub); 1005 if (err < 0) 1006 goto disable_dsc; 1007 1008 for (i = 0; i < hub->num_heads; i++) { 1009 err = clk_prepare_enable(hub->clk_heads[i]); 1010 if (err < 0) 1011 goto disable_heads; 1012 } 1013 1014 err = reset_control_deassert(hub->rst); 1015 if (err < 0) 1016 goto disable_heads; 1017 1018 return 0; 1019 1020 disable_heads: 1021 while (i--) 1022 clk_disable_unprepare(hub->clk_heads[i]); 1023 1024 clk_disable_unprepare(hub->clk_hub); 1025 disable_dsc: 1026 clk_disable_unprepare(hub->clk_dsc); 1027 disable_disp: 1028 clk_disable_unprepare(hub->clk_disp); 1029 put_rpm: 1030 pm_runtime_put_sync(dev); 1031 return err; 1032 } 1033 1034 static const struct host1x_client_ops tegra_display_hub_ops = { 1035 .init = tegra_display_hub_init, 1036 .exit = tegra_display_hub_exit, 1037 .suspend = tegra_display_hub_runtime_suspend, 1038 .resume = tegra_display_hub_runtime_resume, 1039 }; 1040 1041 static int tegra_display_hub_probe(struct platform_device *pdev) 1042 { 1043 u64 dma_mask = dma_get_mask(pdev->dev.parent); 1044 struct device_node *child = NULL; 1045 struct tegra_display_hub *hub; 1046 struct clk *clk; 1047 unsigned int i; 1048 int err; 1049 1050 err = dma_coerce_mask_and_coherent(&pdev->dev, dma_mask); 1051 if (err < 0) { 1052 dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err); 1053 return err; 1054 } 1055 1056 hub = devm_kzalloc(&pdev->dev, sizeof(*hub), GFP_KERNEL); 1057 if (!hub) 1058 return -ENOMEM; 1059 1060 hub->soc = of_device_get_match_data(&pdev->dev); 1061 1062 hub->clk_disp = devm_clk_get(&pdev->dev, "disp"); 1063 if (IS_ERR(hub->clk_disp)) { 1064 err = PTR_ERR(hub->clk_disp); 1065 return err; 1066 } 1067 1068 if (hub->soc->supports_dsc) { 1069 hub->clk_dsc = devm_clk_get(&pdev->dev, "dsc"); 1070 if (IS_ERR(hub->clk_dsc)) { 1071 err = PTR_ERR(hub->clk_dsc); 1072 return err; 1073 } 1074 } 1075 1076 hub->clk_hub = devm_clk_get(&pdev->dev, "hub"); 1077 if (IS_ERR(hub->clk_hub)) { 1078 err = PTR_ERR(hub->clk_hub); 1079 return err; 1080 } 1081 1082 hub->rst = devm_reset_control_get(&pdev->dev, "misc"); 1083 if (IS_ERR(hub->rst)) { 1084 err = PTR_ERR(hub->rst); 1085 return err; 1086 } 1087 1088 hub->wgrps = devm_kcalloc(&pdev->dev, hub->soc->num_wgrps, 1089 sizeof(*hub->wgrps), GFP_KERNEL); 1090 if (!hub->wgrps) 1091 return -ENOMEM; 1092 1093 for (i = 0; i < hub->soc->num_wgrps; i++) { 1094 struct tegra_windowgroup *wgrp = &hub->wgrps[i]; 1095 char id[8]; 1096 1097 snprintf(id, sizeof(id), "wgrp%u", i); 1098 mutex_init(&wgrp->lock); 1099 wgrp->usecount = 0; 1100 wgrp->index = i; 1101 1102 wgrp->rst = devm_reset_control_get(&pdev->dev, id); 1103 if (IS_ERR(wgrp->rst)) 1104 return PTR_ERR(wgrp->rst); 1105 1106 err = reset_control_assert(wgrp->rst); 1107 if (err < 0) 1108 return err; 1109 } 1110 1111 hub->num_heads = of_get_child_count(pdev->dev.of_node); 1112 1113 hub->clk_heads = devm_kcalloc(&pdev->dev, hub->num_heads, sizeof(clk), 1114 GFP_KERNEL); 1115 if (!hub->clk_heads) 1116 return -ENOMEM; 1117 1118 for (i = 0; i < hub->num_heads; i++) { 1119 child = of_get_next_child(pdev->dev.of_node, child); 1120 if (!child) { 1121 dev_err(&pdev->dev, "failed to find node for head %u\n", 1122 i); 1123 return -ENODEV; 1124 } 1125 1126 clk = devm_get_clk_from_child(&pdev->dev, child, "dc"); 1127 if (IS_ERR(clk)) { 1128 dev_err(&pdev->dev, "failed to get clock for head %u\n", 1129 i); 1130 of_node_put(child); 1131 return PTR_ERR(clk); 1132 } 1133 1134 hub->clk_heads[i] = clk; 1135 } 1136 1137 of_node_put(child); 1138 1139 /* XXX: enable clock across reset? */ 1140 err = reset_control_assert(hub->rst); 1141 if (err < 0) 1142 return err; 1143 1144 platform_set_drvdata(pdev, hub); 1145 pm_runtime_enable(&pdev->dev); 1146 1147 INIT_LIST_HEAD(&hub->client.list); 1148 hub->client.ops = &tegra_display_hub_ops; 1149 hub->client.dev = &pdev->dev; 1150 1151 err = host1x_client_register(&hub->client); 1152 if (err < 0) 1153 dev_err(&pdev->dev, "failed to register host1x client: %d\n", 1154 err); 1155 1156 err = devm_of_platform_populate(&pdev->dev); 1157 if (err < 0) 1158 goto unregister; 1159 1160 return err; 1161 1162 unregister: 1163 host1x_client_unregister(&hub->client); 1164 pm_runtime_disable(&pdev->dev); 1165 return err; 1166 } 1167 1168 static int tegra_display_hub_remove(struct platform_device *pdev) 1169 { 1170 struct tegra_display_hub *hub = platform_get_drvdata(pdev); 1171 unsigned int i; 1172 int err; 1173 1174 err = host1x_client_unregister(&hub->client); 1175 if (err < 0) { 1176 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", 1177 err); 1178 } 1179 1180 for (i = 0; i < hub->soc->num_wgrps; i++) { 1181 struct tegra_windowgroup *wgrp = &hub->wgrps[i]; 1182 1183 mutex_destroy(&wgrp->lock); 1184 } 1185 1186 pm_runtime_disable(&pdev->dev); 1187 1188 return err; 1189 } 1190 1191 static const struct tegra_display_hub_soc tegra186_display_hub = { 1192 .num_wgrps = 6, 1193 .supports_dsc = true, 1194 }; 1195 1196 static const struct tegra_display_hub_soc tegra194_display_hub = { 1197 .num_wgrps = 6, 1198 .supports_dsc = false, 1199 }; 1200 1201 static const struct of_device_id tegra_display_hub_of_match[] = { 1202 { 1203 .compatible = "nvidia,tegra194-display", 1204 .data = &tegra194_display_hub 1205 }, { 1206 .compatible = "nvidia,tegra186-display", 1207 .data = &tegra186_display_hub 1208 }, { 1209 /* sentinel */ 1210 } 1211 }; 1212 MODULE_DEVICE_TABLE(of, tegra_display_hub_of_match); 1213 1214 struct platform_driver tegra_display_hub_driver = { 1215 .driver = { 1216 .name = "tegra-display-hub", 1217 .of_match_table = tegra_display_hub_of_match, 1218 }, 1219 .probe = tegra_display_hub_probe, 1220 .remove = tegra_display_hub_remove, 1221 }; 1222