1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2013 NVIDIA Corporation 4 */ 5 6 #include <linux/clk.h> 7 #include <linux/clk-provider.h> 8 #include <linux/debugfs.h> 9 #include <linux/io.h> 10 #include <linux/module.h> 11 #include <linux/of_device.h> 12 #include <linux/platform_device.h> 13 #include <linux/pm_runtime.h> 14 #include <linux/regulator/consumer.h> 15 #include <linux/reset.h> 16 17 #include <soc/tegra/pmc.h> 18 19 #include <drm/drm_atomic_helper.h> 20 #include <drm/drm_debugfs.h> 21 #include <drm/drm_dp_helper.h> 22 #include <drm/drm_file.h> 23 #include <drm/drm_panel.h> 24 #include <drm/drm_scdc_helper.h> 25 #include <drm/drm_simple_kms_helper.h> 26 27 #include "dc.h" 28 #include "dp.h" 29 #include "drm.h" 30 #include "hda.h" 31 #include "sor.h" 32 #include "trace.h" 33 34 #define SOR_REKEY 0x38 35 36 struct tegra_sor_hdmi_settings { 37 unsigned long frequency; 38 39 u8 vcocap; 40 u8 filter; 41 u8 ichpmp; 42 u8 loadadj; 43 u8 tmds_termadj; 44 u8 tx_pu_value; 45 u8 bg_temp_coef; 46 u8 bg_vref_level; 47 u8 avdd10_level; 48 u8 avdd14_level; 49 u8 sparepll; 50 51 u8 drive_current[4]; 52 u8 preemphasis[4]; 53 }; 54 55 #if 1 56 static const struct tegra_sor_hdmi_settings tegra210_sor_hdmi_defaults[] = { 57 { 58 .frequency = 54000000, 59 .vcocap = 0x0, 60 .filter = 0x0, 61 .ichpmp = 0x1, 62 .loadadj = 0x3, 63 .tmds_termadj = 0x9, 64 .tx_pu_value = 0x10, 65 .bg_temp_coef = 0x3, 66 .bg_vref_level = 0x8, 67 .avdd10_level = 0x4, 68 .avdd14_level = 0x4, 69 .sparepll = 0x0, 70 .drive_current = { 0x33, 0x3a, 0x3a, 0x3a }, 71 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 72 }, { 73 .frequency = 75000000, 74 .vcocap = 0x3, 75 .filter = 0x0, 76 .ichpmp = 0x1, 77 .loadadj = 0x3, 78 .tmds_termadj = 0x9, 79 .tx_pu_value = 0x40, 80 .bg_temp_coef = 0x3, 81 .bg_vref_level = 0x8, 82 .avdd10_level = 0x4, 83 .avdd14_level = 0x4, 84 .sparepll = 0x0, 85 .drive_current = { 0x33, 0x3a, 0x3a, 0x3a }, 86 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 87 }, { 88 .frequency = 150000000, 89 .vcocap = 0x3, 90 .filter = 0x0, 91 .ichpmp = 0x1, 92 .loadadj = 0x3, 93 .tmds_termadj = 0x9, 94 .tx_pu_value = 0x66, 95 .bg_temp_coef = 0x3, 96 .bg_vref_level = 0x8, 97 .avdd10_level = 0x4, 98 .avdd14_level = 0x4, 99 .sparepll = 0x0, 100 .drive_current = { 0x33, 0x3a, 0x3a, 0x3a }, 101 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 102 }, { 103 .frequency = 300000000, 104 .vcocap = 0x3, 105 .filter = 0x0, 106 .ichpmp = 0x1, 107 .loadadj = 0x3, 108 .tmds_termadj = 0x9, 109 .tx_pu_value = 0x66, 110 .bg_temp_coef = 0x3, 111 .bg_vref_level = 0xa, 112 .avdd10_level = 0x4, 113 .avdd14_level = 0x4, 114 .sparepll = 0x0, 115 .drive_current = { 0x33, 0x3f, 0x3f, 0x3f }, 116 .preemphasis = { 0x00, 0x17, 0x17, 0x17 }, 117 }, { 118 .frequency = 600000000, 119 .vcocap = 0x3, 120 .filter = 0x0, 121 .ichpmp = 0x1, 122 .loadadj = 0x3, 123 .tmds_termadj = 0x9, 124 .tx_pu_value = 0x66, 125 .bg_temp_coef = 0x3, 126 .bg_vref_level = 0x8, 127 .avdd10_level = 0x4, 128 .avdd14_level = 0x4, 129 .sparepll = 0x0, 130 .drive_current = { 0x33, 0x3f, 0x3f, 0x3f }, 131 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 132 }, 133 }; 134 #else 135 static const struct tegra_sor_hdmi_settings tegra210_sor_hdmi_defaults[] = { 136 { 137 .frequency = 75000000, 138 .vcocap = 0x3, 139 .filter = 0x0, 140 .ichpmp = 0x1, 141 .loadadj = 0x3, 142 .tmds_termadj = 0x9, 143 .tx_pu_value = 0x40, 144 .bg_temp_coef = 0x3, 145 .bg_vref_level = 0x8, 146 .avdd10_level = 0x4, 147 .avdd14_level = 0x4, 148 .sparepll = 0x0, 149 .drive_current = { 0x29, 0x29, 0x29, 0x29 }, 150 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 151 }, { 152 .frequency = 150000000, 153 .vcocap = 0x3, 154 .filter = 0x0, 155 .ichpmp = 0x1, 156 .loadadj = 0x3, 157 .tmds_termadj = 0x9, 158 .tx_pu_value = 0x66, 159 .bg_temp_coef = 0x3, 160 .bg_vref_level = 0x8, 161 .avdd10_level = 0x4, 162 .avdd14_level = 0x4, 163 .sparepll = 0x0, 164 .drive_current = { 0x30, 0x37, 0x37, 0x37 }, 165 .preemphasis = { 0x01, 0x02, 0x02, 0x02 }, 166 }, { 167 .frequency = 300000000, 168 .vcocap = 0x3, 169 .filter = 0x0, 170 .ichpmp = 0x6, 171 .loadadj = 0x3, 172 .tmds_termadj = 0x9, 173 .tx_pu_value = 0x66, 174 .bg_temp_coef = 0x3, 175 .bg_vref_level = 0xf, 176 .avdd10_level = 0x4, 177 .avdd14_level = 0x4, 178 .sparepll = 0x0, 179 .drive_current = { 0x30, 0x37, 0x37, 0x37 }, 180 .preemphasis = { 0x10, 0x3e, 0x3e, 0x3e }, 181 }, { 182 .frequency = 600000000, 183 .vcocap = 0x3, 184 .filter = 0x0, 185 .ichpmp = 0xa, 186 .loadadj = 0x3, 187 .tmds_termadj = 0xb, 188 .tx_pu_value = 0x66, 189 .bg_temp_coef = 0x3, 190 .bg_vref_level = 0xe, 191 .avdd10_level = 0x4, 192 .avdd14_level = 0x4, 193 .sparepll = 0x0, 194 .drive_current = { 0x35, 0x3e, 0x3e, 0x3e }, 195 .preemphasis = { 0x02, 0x3f, 0x3f, 0x3f }, 196 }, 197 }; 198 #endif 199 200 static const struct tegra_sor_hdmi_settings tegra186_sor_hdmi_defaults[] = { 201 { 202 .frequency = 54000000, 203 .vcocap = 0, 204 .filter = 5, 205 .ichpmp = 5, 206 .loadadj = 3, 207 .tmds_termadj = 0xf, 208 .tx_pu_value = 0, 209 .bg_temp_coef = 3, 210 .bg_vref_level = 8, 211 .avdd10_level = 4, 212 .avdd14_level = 4, 213 .sparepll = 0x54, 214 .drive_current = { 0x3a, 0x3a, 0x3a, 0x33 }, 215 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 216 }, { 217 .frequency = 75000000, 218 .vcocap = 1, 219 .filter = 5, 220 .ichpmp = 5, 221 .loadadj = 3, 222 .tmds_termadj = 0xf, 223 .tx_pu_value = 0, 224 .bg_temp_coef = 3, 225 .bg_vref_level = 8, 226 .avdd10_level = 4, 227 .avdd14_level = 4, 228 .sparepll = 0x44, 229 .drive_current = { 0x3a, 0x3a, 0x3a, 0x33 }, 230 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 231 }, { 232 .frequency = 150000000, 233 .vcocap = 3, 234 .filter = 5, 235 .ichpmp = 5, 236 .loadadj = 3, 237 .tmds_termadj = 15, 238 .tx_pu_value = 0x66 /* 0 */, 239 .bg_temp_coef = 3, 240 .bg_vref_level = 8, 241 .avdd10_level = 4, 242 .avdd14_level = 4, 243 .sparepll = 0x00, /* 0x34 */ 244 .drive_current = { 0x3a, 0x3a, 0x3a, 0x37 }, 245 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 246 }, { 247 .frequency = 300000000, 248 .vcocap = 3, 249 .filter = 5, 250 .ichpmp = 5, 251 .loadadj = 3, 252 .tmds_termadj = 15, 253 .tx_pu_value = 64, 254 .bg_temp_coef = 3, 255 .bg_vref_level = 8, 256 .avdd10_level = 4, 257 .avdd14_level = 4, 258 .sparepll = 0x34, 259 .drive_current = { 0x3d, 0x3d, 0x3d, 0x33 }, 260 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 261 }, { 262 .frequency = 600000000, 263 .vcocap = 3, 264 .filter = 5, 265 .ichpmp = 5, 266 .loadadj = 3, 267 .tmds_termadj = 12, 268 .tx_pu_value = 96, 269 .bg_temp_coef = 3, 270 .bg_vref_level = 8, 271 .avdd10_level = 4, 272 .avdd14_level = 4, 273 .sparepll = 0x34, 274 .drive_current = { 0x3d, 0x3d, 0x3d, 0x33 }, 275 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 276 } 277 }; 278 279 static const struct tegra_sor_hdmi_settings tegra194_sor_hdmi_defaults[] = { 280 { 281 .frequency = 54000000, 282 .vcocap = 0, 283 .filter = 5, 284 .ichpmp = 5, 285 .loadadj = 3, 286 .tmds_termadj = 0xf, 287 .tx_pu_value = 0, 288 .bg_temp_coef = 3, 289 .bg_vref_level = 8, 290 .avdd10_level = 4, 291 .avdd14_level = 4, 292 .sparepll = 0x54, 293 .drive_current = { 0x3a, 0x3a, 0x3a, 0x33 }, 294 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 295 }, { 296 .frequency = 75000000, 297 .vcocap = 1, 298 .filter = 5, 299 .ichpmp = 5, 300 .loadadj = 3, 301 .tmds_termadj = 0xf, 302 .tx_pu_value = 0, 303 .bg_temp_coef = 3, 304 .bg_vref_level = 8, 305 .avdd10_level = 4, 306 .avdd14_level = 4, 307 .sparepll = 0x44, 308 .drive_current = { 0x3a, 0x3a, 0x3a, 0x33 }, 309 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 310 }, { 311 .frequency = 150000000, 312 .vcocap = 3, 313 .filter = 5, 314 .ichpmp = 5, 315 .loadadj = 3, 316 .tmds_termadj = 15, 317 .tx_pu_value = 0x66 /* 0 */, 318 .bg_temp_coef = 3, 319 .bg_vref_level = 8, 320 .avdd10_level = 4, 321 .avdd14_level = 4, 322 .sparepll = 0x00, /* 0x34 */ 323 .drive_current = { 0x3a, 0x3a, 0x3a, 0x37 }, 324 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 325 }, { 326 .frequency = 300000000, 327 .vcocap = 3, 328 .filter = 5, 329 .ichpmp = 5, 330 .loadadj = 3, 331 .tmds_termadj = 15, 332 .tx_pu_value = 64, 333 .bg_temp_coef = 3, 334 .bg_vref_level = 8, 335 .avdd10_level = 4, 336 .avdd14_level = 4, 337 .sparepll = 0x34, 338 .drive_current = { 0x3d, 0x3d, 0x3d, 0x33 }, 339 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 340 }, { 341 .frequency = 600000000, 342 .vcocap = 3, 343 .filter = 5, 344 .ichpmp = 5, 345 .loadadj = 3, 346 .tmds_termadj = 12, 347 .tx_pu_value = 96, 348 .bg_temp_coef = 3, 349 .bg_vref_level = 8, 350 .avdd10_level = 4, 351 .avdd14_level = 4, 352 .sparepll = 0x34, 353 .drive_current = { 0x3d, 0x3d, 0x3d, 0x33 }, 354 .preemphasis = { 0x00, 0x00, 0x00, 0x00 }, 355 } 356 }; 357 358 struct tegra_sor_regs { 359 unsigned int head_state0; 360 unsigned int head_state1; 361 unsigned int head_state2; 362 unsigned int head_state3; 363 unsigned int head_state4; 364 unsigned int head_state5; 365 unsigned int pll0; 366 unsigned int pll1; 367 unsigned int pll2; 368 unsigned int pll3; 369 unsigned int dp_padctl0; 370 unsigned int dp_padctl2; 371 }; 372 373 struct tegra_sor_soc { 374 bool supports_lvds; 375 bool supports_hdmi; 376 bool supports_dp; 377 bool supports_audio; 378 bool supports_hdcp; 379 380 const struct tegra_sor_regs *regs; 381 bool has_nvdisplay; 382 383 const struct tegra_sor_hdmi_settings *settings; 384 unsigned int num_settings; 385 386 const u8 *xbar_cfg; 387 const u8 *lane_map; 388 389 const u8 (*voltage_swing)[4][4]; 390 const u8 (*pre_emphasis)[4][4]; 391 const u8 (*post_cursor)[4][4]; 392 const u8 (*tx_pu)[4][4]; 393 }; 394 395 struct tegra_sor; 396 397 struct tegra_sor_ops { 398 const char *name; 399 int (*probe)(struct tegra_sor *sor); 400 int (*remove)(struct tegra_sor *sor); 401 void (*audio_enable)(struct tegra_sor *sor); 402 void (*audio_disable)(struct tegra_sor *sor); 403 }; 404 405 struct tegra_sor { 406 struct host1x_client client; 407 struct tegra_output output; 408 struct device *dev; 409 410 const struct tegra_sor_soc *soc; 411 void __iomem *regs; 412 unsigned int index; 413 unsigned int irq; 414 415 struct reset_control *rst; 416 struct clk *clk_parent; 417 struct clk *clk_safe; 418 struct clk *clk_out; 419 struct clk *clk_pad; 420 struct clk *clk_dp; 421 struct clk *clk; 422 423 u8 xbar_cfg[5]; 424 425 struct drm_dp_link link; 426 struct drm_dp_aux *aux; 427 428 struct drm_info_list *debugfs_files; 429 430 const struct tegra_sor_ops *ops; 431 enum tegra_io_pad pad; 432 433 /* for HDMI 2.0 */ 434 struct tegra_sor_hdmi_settings *settings; 435 unsigned int num_settings; 436 437 struct regulator *avdd_io_supply; 438 struct regulator *vdd_pll_supply; 439 struct regulator *hdmi_supply; 440 441 struct delayed_work scdc; 442 bool scdc_enabled; 443 444 struct tegra_hda_format format; 445 }; 446 447 struct tegra_sor_state { 448 struct drm_connector_state base; 449 450 unsigned int link_speed; 451 unsigned long pclk; 452 unsigned int bpc; 453 }; 454 455 static inline struct tegra_sor_state * 456 to_sor_state(struct drm_connector_state *state) 457 { 458 return container_of(state, struct tegra_sor_state, base); 459 } 460 461 struct tegra_sor_config { 462 u32 bits_per_pixel; 463 464 u32 active_polarity; 465 u32 active_count; 466 u32 tu_size; 467 u32 active_frac; 468 u32 watermark; 469 470 u32 hblank_symbols; 471 u32 vblank_symbols; 472 }; 473 474 static inline struct tegra_sor * 475 host1x_client_to_sor(struct host1x_client *client) 476 { 477 return container_of(client, struct tegra_sor, client); 478 } 479 480 static inline struct tegra_sor *to_sor(struct tegra_output *output) 481 { 482 return container_of(output, struct tegra_sor, output); 483 } 484 485 static inline u32 tegra_sor_readl(struct tegra_sor *sor, unsigned int offset) 486 { 487 u32 value = readl(sor->regs + (offset << 2)); 488 489 trace_sor_readl(sor->dev, offset, value); 490 491 return value; 492 } 493 494 static inline void tegra_sor_writel(struct tegra_sor *sor, u32 value, 495 unsigned int offset) 496 { 497 trace_sor_writel(sor->dev, offset, value); 498 writel(value, sor->regs + (offset << 2)); 499 } 500 501 static int tegra_sor_set_parent_clock(struct tegra_sor *sor, struct clk *parent) 502 { 503 int err; 504 505 clk_disable_unprepare(sor->clk); 506 507 err = clk_set_parent(sor->clk_out, parent); 508 if (err < 0) 509 return err; 510 511 err = clk_prepare_enable(sor->clk); 512 if (err < 0) 513 return err; 514 515 return 0; 516 } 517 518 struct tegra_clk_sor_pad { 519 struct clk_hw hw; 520 struct tegra_sor *sor; 521 }; 522 523 static inline struct tegra_clk_sor_pad *to_pad(struct clk_hw *hw) 524 { 525 return container_of(hw, struct tegra_clk_sor_pad, hw); 526 } 527 528 static const char * const tegra_clk_sor_pad_parents[2][2] = { 529 { "pll_d_out0", "pll_dp" }, 530 { "pll_d2_out0", "pll_dp" }, 531 }; 532 533 /* 534 * Implementing ->set_parent() here isn't really required because the parent 535 * will be explicitly selected in the driver code via the DP_CLK_SEL mux in 536 * the SOR_CLK_CNTRL register. This is primarily for compatibility with the 537 * Tegra186 and later SoC generations where the BPMP implements this clock 538 * and doesn't expose the mux via the common clock framework. 539 */ 540 541 static int tegra_clk_sor_pad_set_parent(struct clk_hw *hw, u8 index) 542 { 543 struct tegra_clk_sor_pad *pad = to_pad(hw); 544 struct tegra_sor *sor = pad->sor; 545 u32 value; 546 547 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 548 value &= ~SOR_CLK_CNTRL_DP_CLK_SEL_MASK; 549 550 switch (index) { 551 case 0: 552 value |= SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_PCLK; 553 break; 554 555 case 1: 556 value |= SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK; 557 break; 558 } 559 560 tegra_sor_writel(sor, value, SOR_CLK_CNTRL); 561 562 return 0; 563 } 564 565 static u8 tegra_clk_sor_pad_get_parent(struct clk_hw *hw) 566 { 567 struct tegra_clk_sor_pad *pad = to_pad(hw); 568 struct tegra_sor *sor = pad->sor; 569 u8 parent = U8_MAX; 570 u32 value; 571 572 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 573 574 switch (value & SOR_CLK_CNTRL_DP_CLK_SEL_MASK) { 575 case SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_PCLK: 576 case SOR_CLK_CNTRL_DP_CLK_SEL_DIFF_PCLK: 577 parent = 0; 578 break; 579 580 case SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK: 581 case SOR_CLK_CNTRL_DP_CLK_SEL_DIFF_DPCLK: 582 parent = 1; 583 break; 584 } 585 586 return parent; 587 } 588 589 static const struct clk_ops tegra_clk_sor_pad_ops = { 590 .set_parent = tegra_clk_sor_pad_set_parent, 591 .get_parent = tegra_clk_sor_pad_get_parent, 592 }; 593 594 static struct clk *tegra_clk_sor_pad_register(struct tegra_sor *sor, 595 const char *name) 596 { 597 struct tegra_clk_sor_pad *pad; 598 struct clk_init_data init; 599 struct clk *clk; 600 601 pad = devm_kzalloc(sor->dev, sizeof(*pad), GFP_KERNEL); 602 if (!pad) 603 return ERR_PTR(-ENOMEM); 604 605 pad->sor = sor; 606 607 init.name = name; 608 init.flags = 0; 609 init.parent_names = tegra_clk_sor_pad_parents[sor->index]; 610 init.num_parents = ARRAY_SIZE(tegra_clk_sor_pad_parents[sor->index]); 611 init.ops = &tegra_clk_sor_pad_ops; 612 613 pad->hw.init = &init; 614 615 clk = devm_clk_register(sor->dev, &pad->hw); 616 617 return clk; 618 } 619 620 static void tegra_sor_filter_rates(struct tegra_sor *sor) 621 { 622 struct drm_dp_link *link = &sor->link; 623 unsigned int i; 624 625 /* Tegra only supports RBR, HBR and HBR2 */ 626 for (i = 0; i < link->num_rates; i++) { 627 switch (link->rates[i]) { 628 case 1620000: 629 case 2700000: 630 case 5400000: 631 break; 632 633 default: 634 DRM_DEBUG_KMS("link rate %lu kHz not supported\n", 635 link->rates[i]); 636 link->rates[i] = 0; 637 break; 638 } 639 } 640 641 drm_dp_link_update_rates(link); 642 } 643 644 static int tegra_sor_power_up_lanes(struct tegra_sor *sor, unsigned int lanes) 645 { 646 unsigned long timeout; 647 u32 value; 648 649 /* 650 * Clear or set the PD_TXD bit corresponding to each lane, depending 651 * on whether it is used or not. 652 */ 653 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 654 655 if (lanes <= 2) 656 value &= ~(SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[3]) | 657 SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[2])); 658 else 659 value |= SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[3]) | 660 SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[2]); 661 662 if (lanes <= 1) 663 value &= ~SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[1]); 664 else 665 value |= SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[1]); 666 667 if (lanes == 0) 668 value &= ~SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[0]); 669 else 670 value |= SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[0]); 671 672 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 673 674 /* start lane sequencer */ 675 value = SOR_LANE_SEQ_CTL_TRIGGER | SOR_LANE_SEQ_CTL_SEQUENCE_DOWN | 676 SOR_LANE_SEQ_CTL_POWER_STATE_UP; 677 tegra_sor_writel(sor, value, SOR_LANE_SEQ_CTL); 678 679 timeout = jiffies + msecs_to_jiffies(250); 680 681 while (time_before(jiffies, timeout)) { 682 value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL); 683 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) == 0) 684 break; 685 686 usleep_range(250, 1000); 687 } 688 689 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) != 0) 690 return -ETIMEDOUT; 691 692 return 0; 693 } 694 695 static int tegra_sor_power_down_lanes(struct tegra_sor *sor) 696 { 697 unsigned long timeout; 698 u32 value; 699 700 /* power down all lanes */ 701 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 702 value &= ~(SOR_DP_PADCTL_PD_TXD_3 | SOR_DP_PADCTL_PD_TXD_0 | 703 SOR_DP_PADCTL_PD_TXD_1 | SOR_DP_PADCTL_PD_TXD_2); 704 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 705 706 /* start lane sequencer */ 707 value = SOR_LANE_SEQ_CTL_TRIGGER | SOR_LANE_SEQ_CTL_SEQUENCE_UP | 708 SOR_LANE_SEQ_CTL_POWER_STATE_DOWN; 709 tegra_sor_writel(sor, value, SOR_LANE_SEQ_CTL); 710 711 timeout = jiffies + msecs_to_jiffies(250); 712 713 while (time_before(jiffies, timeout)) { 714 value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL); 715 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) == 0) 716 break; 717 718 usleep_range(25, 100); 719 } 720 721 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) != 0) 722 return -ETIMEDOUT; 723 724 return 0; 725 } 726 727 static void tegra_sor_dp_precharge(struct tegra_sor *sor, unsigned int lanes) 728 { 729 u32 value; 730 731 /* pre-charge all used lanes */ 732 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 733 734 if (lanes <= 2) 735 value &= ~(SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[3]) | 736 SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[2])); 737 else 738 value |= SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[3]) | 739 SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[2]); 740 741 if (lanes <= 1) 742 value &= ~SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[1]); 743 else 744 value |= SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[1]); 745 746 if (lanes == 0) 747 value &= ~SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[0]); 748 else 749 value |= SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[0]); 750 751 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 752 753 usleep_range(15, 100); 754 755 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 756 value &= ~(SOR_DP_PADCTL_CM_TXD_3 | SOR_DP_PADCTL_CM_TXD_2 | 757 SOR_DP_PADCTL_CM_TXD_1 | SOR_DP_PADCTL_CM_TXD_0); 758 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 759 } 760 761 static void tegra_sor_dp_term_calibrate(struct tegra_sor *sor) 762 { 763 u32 mask = 0x08, adj = 0, value; 764 765 /* enable pad calibration logic */ 766 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 767 value &= ~SOR_DP_PADCTL_PAD_CAL_PD; 768 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 769 770 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 771 value |= SOR_PLL1_TMDS_TERM; 772 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 773 774 while (mask) { 775 adj |= mask; 776 777 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 778 value &= ~SOR_PLL1_TMDS_TERMADJ_MASK; 779 value |= SOR_PLL1_TMDS_TERMADJ(adj); 780 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 781 782 usleep_range(100, 200); 783 784 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 785 if (value & SOR_PLL1_TERM_COMPOUT) 786 adj &= ~mask; 787 788 mask >>= 1; 789 } 790 791 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 792 value &= ~SOR_PLL1_TMDS_TERMADJ_MASK; 793 value |= SOR_PLL1_TMDS_TERMADJ(adj); 794 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 795 796 /* disable pad calibration logic */ 797 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 798 value |= SOR_DP_PADCTL_PAD_CAL_PD; 799 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 800 } 801 802 static int tegra_sor_dp_link_apply_training(struct drm_dp_link *link) 803 { 804 struct tegra_sor *sor = container_of(link, struct tegra_sor, link); 805 u32 voltage_swing = 0, pre_emphasis = 0, post_cursor = 0; 806 const struct tegra_sor_soc *soc = sor->soc; 807 u32 pattern = 0, tx_pu = 0, value; 808 unsigned int i; 809 810 for (value = 0, i = 0; i < link->lanes; i++) { 811 u8 vs = link->train.request.voltage_swing[i]; 812 u8 pe = link->train.request.pre_emphasis[i]; 813 u8 pc = link->train.request.post_cursor[i]; 814 u8 shift = sor->soc->lane_map[i] << 3; 815 816 voltage_swing |= soc->voltage_swing[pc][vs][pe] << shift; 817 pre_emphasis |= soc->pre_emphasis[pc][vs][pe] << shift; 818 post_cursor |= soc->post_cursor[pc][vs][pe] << shift; 819 820 if (sor->soc->tx_pu[pc][vs][pe] > tx_pu) 821 tx_pu = sor->soc->tx_pu[pc][vs][pe]; 822 823 switch (link->train.pattern) { 824 case DP_TRAINING_PATTERN_DISABLE: 825 value = SOR_DP_TPG_SCRAMBLER_GALIOS | 826 SOR_DP_TPG_PATTERN_NONE; 827 break; 828 829 case DP_TRAINING_PATTERN_1: 830 value = SOR_DP_TPG_SCRAMBLER_NONE | 831 SOR_DP_TPG_PATTERN_TRAIN1; 832 break; 833 834 case DP_TRAINING_PATTERN_2: 835 value = SOR_DP_TPG_SCRAMBLER_NONE | 836 SOR_DP_TPG_PATTERN_TRAIN2; 837 break; 838 839 case DP_TRAINING_PATTERN_3: 840 value = SOR_DP_TPG_SCRAMBLER_NONE | 841 SOR_DP_TPG_PATTERN_TRAIN3; 842 break; 843 844 default: 845 return -EINVAL; 846 } 847 848 if (link->caps.channel_coding) 849 value |= SOR_DP_TPG_CHANNEL_CODING; 850 851 pattern = pattern << 8 | value; 852 } 853 854 tegra_sor_writel(sor, voltage_swing, SOR_LANE_DRIVE_CURRENT0); 855 tegra_sor_writel(sor, pre_emphasis, SOR_LANE_PREEMPHASIS0); 856 857 if (link->caps.tps3_supported) 858 tegra_sor_writel(sor, post_cursor, SOR_LANE_POSTCURSOR0); 859 860 tegra_sor_writel(sor, pattern, SOR_DP_TPG); 861 862 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 863 value &= ~SOR_DP_PADCTL_TX_PU_MASK; 864 value |= SOR_DP_PADCTL_TX_PU_ENABLE; 865 value |= SOR_DP_PADCTL_TX_PU(tx_pu); 866 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 867 868 usleep_range(20, 100); 869 870 return 0; 871 } 872 873 static int tegra_sor_dp_link_configure(struct drm_dp_link *link) 874 { 875 struct tegra_sor *sor = container_of(link, struct tegra_sor, link); 876 unsigned int rate, lanes; 877 u32 value; 878 int err; 879 880 rate = drm_dp_link_rate_to_bw_code(link->rate); 881 lanes = link->lanes; 882 883 /* configure link speed and lane count */ 884 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 885 value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK; 886 value |= SOR_CLK_CNTRL_DP_LINK_SPEED(rate); 887 tegra_sor_writel(sor, value, SOR_CLK_CNTRL); 888 889 value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); 890 value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK; 891 value |= SOR_DP_LINKCTL_LANE_COUNT(lanes); 892 893 if (link->caps.enhanced_framing) 894 value |= SOR_DP_LINKCTL_ENHANCED_FRAME; 895 896 tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); 897 898 usleep_range(400, 1000); 899 900 /* configure load pulse position adjustment */ 901 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 902 value &= ~SOR_PLL1_LOADADJ_MASK; 903 904 switch (rate) { 905 case DP_LINK_BW_1_62: 906 value |= SOR_PLL1_LOADADJ(0x3); 907 break; 908 909 case DP_LINK_BW_2_7: 910 value |= SOR_PLL1_LOADADJ(0x4); 911 break; 912 913 case DP_LINK_BW_5_4: 914 value |= SOR_PLL1_LOADADJ(0x6); 915 break; 916 } 917 918 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 919 920 /* use alternate scrambler reset for eDP */ 921 value = tegra_sor_readl(sor, SOR_DP_SPARE0); 922 923 if (link->edp == 0) 924 value &= ~SOR_DP_SPARE_PANEL_INTERNAL; 925 else 926 value |= SOR_DP_SPARE_PANEL_INTERNAL; 927 928 tegra_sor_writel(sor, value, SOR_DP_SPARE0); 929 930 err = tegra_sor_power_down_lanes(sor); 931 if (err < 0) { 932 dev_err(sor->dev, "failed to power down lanes: %d\n", err); 933 return err; 934 } 935 936 /* power up and pre-charge lanes */ 937 err = tegra_sor_power_up_lanes(sor, lanes); 938 if (err < 0) { 939 dev_err(sor->dev, "failed to power up %u lane%s: %d\n", 940 lanes, (lanes != 1) ? "s" : "", err); 941 return err; 942 } 943 944 tegra_sor_dp_precharge(sor, lanes); 945 946 return 0; 947 } 948 949 static const struct drm_dp_link_ops tegra_sor_dp_link_ops = { 950 .apply_training = tegra_sor_dp_link_apply_training, 951 .configure = tegra_sor_dp_link_configure, 952 }; 953 954 static void tegra_sor_super_update(struct tegra_sor *sor) 955 { 956 tegra_sor_writel(sor, 0, SOR_SUPER_STATE0); 957 tegra_sor_writel(sor, 1, SOR_SUPER_STATE0); 958 tegra_sor_writel(sor, 0, SOR_SUPER_STATE0); 959 } 960 961 static void tegra_sor_update(struct tegra_sor *sor) 962 { 963 tegra_sor_writel(sor, 0, SOR_STATE0); 964 tegra_sor_writel(sor, 1, SOR_STATE0); 965 tegra_sor_writel(sor, 0, SOR_STATE0); 966 } 967 968 static int tegra_sor_setup_pwm(struct tegra_sor *sor, unsigned long timeout) 969 { 970 u32 value; 971 972 value = tegra_sor_readl(sor, SOR_PWM_DIV); 973 value &= ~SOR_PWM_DIV_MASK; 974 value |= 0x400; /* period */ 975 tegra_sor_writel(sor, value, SOR_PWM_DIV); 976 977 value = tegra_sor_readl(sor, SOR_PWM_CTL); 978 value &= ~SOR_PWM_CTL_DUTY_CYCLE_MASK; 979 value |= 0x400; /* duty cycle */ 980 value &= ~SOR_PWM_CTL_CLK_SEL; /* clock source: PCLK */ 981 value |= SOR_PWM_CTL_TRIGGER; 982 tegra_sor_writel(sor, value, SOR_PWM_CTL); 983 984 timeout = jiffies + msecs_to_jiffies(timeout); 985 986 while (time_before(jiffies, timeout)) { 987 value = tegra_sor_readl(sor, SOR_PWM_CTL); 988 if ((value & SOR_PWM_CTL_TRIGGER) == 0) 989 return 0; 990 991 usleep_range(25, 100); 992 } 993 994 return -ETIMEDOUT; 995 } 996 997 static int tegra_sor_attach(struct tegra_sor *sor) 998 { 999 unsigned long value, timeout; 1000 1001 /* wake up in normal mode */ 1002 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1003 value |= SOR_SUPER_STATE_HEAD_MODE_AWAKE; 1004 value |= SOR_SUPER_STATE_MODE_NORMAL; 1005 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1006 tegra_sor_super_update(sor); 1007 1008 /* attach */ 1009 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1010 value |= SOR_SUPER_STATE_ATTACHED; 1011 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1012 tegra_sor_super_update(sor); 1013 1014 timeout = jiffies + msecs_to_jiffies(250); 1015 1016 while (time_before(jiffies, timeout)) { 1017 value = tegra_sor_readl(sor, SOR_TEST); 1018 if ((value & SOR_TEST_ATTACHED) != 0) 1019 return 0; 1020 1021 usleep_range(25, 100); 1022 } 1023 1024 return -ETIMEDOUT; 1025 } 1026 1027 static int tegra_sor_wakeup(struct tegra_sor *sor) 1028 { 1029 unsigned long value, timeout; 1030 1031 timeout = jiffies + msecs_to_jiffies(250); 1032 1033 /* wait for head to wake up */ 1034 while (time_before(jiffies, timeout)) { 1035 value = tegra_sor_readl(sor, SOR_TEST); 1036 value &= SOR_TEST_HEAD_MODE_MASK; 1037 1038 if (value == SOR_TEST_HEAD_MODE_AWAKE) 1039 return 0; 1040 1041 usleep_range(25, 100); 1042 } 1043 1044 return -ETIMEDOUT; 1045 } 1046 1047 static int tegra_sor_power_up(struct tegra_sor *sor, unsigned long timeout) 1048 { 1049 u32 value; 1050 1051 value = tegra_sor_readl(sor, SOR_PWR); 1052 value |= SOR_PWR_TRIGGER | SOR_PWR_NORMAL_STATE_PU; 1053 tegra_sor_writel(sor, value, SOR_PWR); 1054 1055 timeout = jiffies + msecs_to_jiffies(timeout); 1056 1057 while (time_before(jiffies, timeout)) { 1058 value = tegra_sor_readl(sor, SOR_PWR); 1059 if ((value & SOR_PWR_TRIGGER) == 0) 1060 return 0; 1061 1062 usleep_range(25, 100); 1063 } 1064 1065 return -ETIMEDOUT; 1066 } 1067 1068 struct tegra_sor_params { 1069 /* number of link clocks per line */ 1070 unsigned int num_clocks; 1071 /* ratio between input and output */ 1072 u64 ratio; 1073 /* precision factor */ 1074 u64 precision; 1075 1076 unsigned int active_polarity; 1077 unsigned int active_count; 1078 unsigned int active_frac; 1079 unsigned int tu_size; 1080 unsigned int error; 1081 }; 1082 1083 static int tegra_sor_compute_params(struct tegra_sor *sor, 1084 struct tegra_sor_params *params, 1085 unsigned int tu_size) 1086 { 1087 u64 active_sym, active_count, frac, approx; 1088 u32 active_polarity, active_frac = 0; 1089 const u64 f = params->precision; 1090 s64 error; 1091 1092 active_sym = params->ratio * tu_size; 1093 active_count = div_u64(active_sym, f) * f; 1094 frac = active_sym - active_count; 1095 1096 /* fraction < 0.5 */ 1097 if (frac >= (f / 2)) { 1098 active_polarity = 1; 1099 frac = f - frac; 1100 } else { 1101 active_polarity = 0; 1102 } 1103 1104 if (frac != 0) { 1105 frac = div_u64(f * f, frac); /* 1/fraction */ 1106 if (frac <= (15 * f)) { 1107 active_frac = div_u64(frac, f); 1108 1109 /* round up */ 1110 if (active_polarity) 1111 active_frac++; 1112 } else { 1113 active_frac = active_polarity ? 1 : 15; 1114 } 1115 } 1116 1117 if (active_frac == 1) 1118 active_polarity = 0; 1119 1120 if (active_polarity == 1) { 1121 if (active_frac) { 1122 approx = active_count + (active_frac * (f - 1)) * f; 1123 approx = div_u64(approx, active_frac * f); 1124 } else { 1125 approx = active_count + f; 1126 } 1127 } else { 1128 if (active_frac) 1129 approx = active_count + div_u64(f, active_frac); 1130 else 1131 approx = active_count; 1132 } 1133 1134 error = div_s64(active_sym - approx, tu_size); 1135 error *= params->num_clocks; 1136 1137 if (error <= 0 && abs(error) < params->error) { 1138 params->active_count = div_u64(active_count, f); 1139 params->active_polarity = active_polarity; 1140 params->active_frac = active_frac; 1141 params->error = abs(error); 1142 params->tu_size = tu_size; 1143 1144 if (error == 0) 1145 return true; 1146 } 1147 1148 return false; 1149 } 1150 1151 static int tegra_sor_compute_config(struct tegra_sor *sor, 1152 const struct drm_display_mode *mode, 1153 struct tegra_sor_config *config, 1154 struct drm_dp_link *link) 1155 { 1156 const u64 f = 100000, link_rate = link->rate * 1000; 1157 const u64 pclk = mode->clock * 1000; 1158 u64 input, output, watermark, num; 1159 struct tegra_sor_params params; 1160 u32 num_syms_per_line; 1161 unsigned int i; 1162 1163 if (!link_rate || !link->lanes || !pclk || !config->bits_per_pixel) 1164 return -EINVAL; 1165 1166 input = pclk * config->bits_per_pixel; 1167 output = link_rate * 8 * link->lanes; 1168 1169 if (input >= output) 1170 return -ERANGE; 1171 1172 memset(¶ms, 0, sizeof(params)); 1173 params.ratio = div64_u64(input * f, output); 1174 params.num_clocks = div_u64(link_rate * mode->hdisplay, pclk); 1175 params.precision = f; 1176 params.error = 64 * f; 1177 params.tu_size = 64; 1178 1179 for (i = params.tu_size; i >= 32; i--) 1180 if (tegra_sor_compute_params(sor, ¶ms, i)) 1181 break; 1182 1183 if (params.active_frac == 0) { 1184 config->active_polarity = 0; 1185 config->active_count = params.active_count; 1186 1187 if (!params.active_polarity) 1188 config->active_count--; 1189 1190 config->tu_size = params.tu_size; 1191 config->active_frac = 1; 1192 } else { 1193 config->active_polarity = params.active_polarity; 1194 config->active_count = params.active_count; 1195 config->active_frac = params.active_frac; 1196 config->tu_size = params.tu_size; 1197 } 1198 1199 dev_dbg(sor->dev, 1200 "polarity: %d active count: %d tu size: %d active frac: %d\n", 1201 config->active_polarity, config->active_count, 1202 config->tu_size, config->active_frac); 1203 1204 watermark = params.ratio * config->tu_size * (f - params.ratio); 1205 watermark = div_u64(watermark, f); 1206 1207 watermark = div_u64(watermark + params.error, f); 1208 config->watermark = watermark + (config->bits_per_pixel / 8) + 2; 1209 num_syms_per_line = (mode->hdisplay * config->bits_per_pixel) * 1210 (link->lanes * 8); 1211 1212 if (config->watermark > 30) { 1213 config->watermark = 30; 1214 dev_err(sor->dev, 1215 "unable to compute TU size, forcing watermark to %u\n", 1216 config->watermark); 1217 } else if (config->watermark > num_syms_per_line) { 1218 config->watermark = num_syms_per_line; 1219 dev_err(sor->dev, "watermark too high, forcing to %u\n", 1220 config->watermark); 1221 } 1222 1223 /* compute the number of symbols per horizontal blanking interval */ 1224 num = ((mode->htotal - mode->hdisplay) - 7) * link_rate; 1225 config->hblank_symbols = div_u64(num, pclk); 1226 1227 if (link->caps.enhanced_framing) 1228 config->hblank_symbols -= 3; 1229 1230 config->hblank_symbols -= 12 / link->lanes; 1231 1232 /* compute the number of symbols per vertical blanking interval */ 1233 num = (mode->hdisplay - 25) * link_rate; 1234 config->vblank_symbols = div_u64(num, pclk); 1235 config->vblank_symbols -= 36 / link->lanes + 4; 1236 1237 dev_dbg(sor->dev, "blank symbols: H:%u V:%u\n", config->hblank_symbols, 1238 config->vblank_symbols); 1239 1240 return 0; 1241 } 1242 1243 static void tegra_sor_apply_config(struct tegra_sor *sor, 1244 const struct tegra_sor_config *config) 1245 { 1246 u32 value; 1247 1248 value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); 1249 value &= ~SOR_DP_LINKCTL_TU_SIZE_MASK; 1250 value |= SOR_DP_LINKCTL_TU_SIZE(config->tu_size); 1251 tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); 1252 1253 value = tegra_sor_readl(sor, SOR_DP_CONFIG0); 1254 value &= ~SOR_DP_CONFIG_WATERMARK_MASK; 1255 value |= SOR_DP_CONFIG_WATERMARK(config->watermark); 1256 1257 value &= ~SOR_DP_CONFIG_ACTIVE_SYM_COUNT_MASK; 1258 value |= SOR_DP_CONFIG_ACTIVE_SYM_COUNT(config->active_count); 1259 1260 value &= ~SOR_DP_CONFIG_ACTIVE_SYM_FRAC_MASK; 1261 value |= SOR_DP_CONFIG_ACTIVE_SYM_FRAC(config->active_frac); 1262 1263 if (config->active_polarity) 1264 value |= SOR_DP_CONFIG_ACTIVE_SYM_POLARITY; 1265 else 1266 value &= ~SOR_DP_CONFIG_ACTIVE_SYM_POLARITY; 1267 1268 value |= SOR_DP_CONFIG_ACTIVE_SYM_ENABLE; 1269 value |= SOR_DP_CONFIG_DISPARITY_NEGATIVE; 1270 tegra_sor_writel(sor, value, SOR_DP_CONFIG0); 1271 1272 value = tegra_sor_readl(sor, SOR_DP_AUDIO_HBLANK_SYMBOLS); 1273 value &= ~SOR_DP_AUDIO_HBLANK_SYMBOLS_MASK; 1274 value |= config->hblank_symbols & 0xffff; 1275 tegra_sor_writel(sor, value, SOR_DP_AUDIO_HBLANK_SYMBOLS); 1276 1277 value = tegra_sor_readl(sor, SOR_DP_AUDIO_VBLANK_SYMBOLS); 1278 value &= ~SOR_DP_AUDIO_VBLANK_SYMBOLS_MASK; 1279 value |= config->vblank_symbols & 0xffff; 1280 tegra_sor_writel(sor, value, SOR_DP_AUDIO_VBLANK_SYMBOLS); 1281 } 1282 1283 static void tegra_sor_mode_set(struct tegra_sor *sor, 1284 const struct drm_display_mode *mode, 1285 struct tegra_sor_state *state) 1286 { 1287 struct tegra_dc *dc = to_tegra_dc(sor->output.encoder.crtc); 1288 unsigned int vbe, vse, hbe, hse, vbs, hbs; 1289 u32 value; 1290 1291 value = tegra_sor_readl(sor, SOR_STATE1); 1292 value &= ~SOR_STATE_ASY_PIXELDEPTH_MASK; 1293 value &= ~SOR_STATE_ASY_CRC_MODE_MASK; 1294 value &= ~SOR_STATE_ASY_OWNER_MASK; 1295 1296 value |= SOR_STATE_ASY_CRC_MODE_COMPLETE | 1297 SOR_STATE_ASY_OWNER(dc->pipe + 1); 1298 1299 if (mode->flags & DRM_MODE_FLAG_PHSYNC) 1300 value &= ~SOR_STATE_ASY_HSYNCPOL; 1301 1302 if (mode->flags & DRM_MODE_FLAG_NHSYNC) 1303 value |= SOR_STATE_ASY_HSYNCPOL; 1304 1305 if (mode->flags & DRM_MODE_FLAG_PVSYNC) 1306 value &= ~SOR_STATE_ASY_VSYNCPOL; 1307 1308 if (mode->flags & DRM_MODE_FLAG_NVSYNC) 1309 value |= SOR_STATE_ASY_VSYNCPOL; 1310 1311 switch (state->bpc) { 1312 case 16: 1313 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_48_444; 1314 break; 1315 1316 case 12: 1317 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_36_444; 1318 break; 1319 1320 case 10: 1321 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_30_444; 1322 break; 1323 1324 case 8: 1325 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_24_444; 1326 break; 1327 1328 case 6: 1329 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_18_444; 1330 break; 1331 1332 default: 1333 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_24_444; 1334 break; 1335 } 1336 1337 tegra_sor_writel(sor, value, SOR_STATE1); 1338 1339 /* 1340 * TODO: The video timing programming below doesn't seem to match the 1341 * register definitions. 1342 */ 1343 1344 value = ((mode->vtotal & 0x7fff) << 16) | (mode->htotal & 0x7fff); 1345 tegra_sor_writel(sor, value, sor->soc->regs->head_state1 + dc->pipe); 1346 1347 /* sync end = sync width - 1 */ 1348 vse = mode->vsync_end - mode->vsync_start - 1; 1349 hse = mode->hsync_end - mode->hsync_start - 1; 1350 1351 value = ((vse & 0x7fff) << 16) | (hse & 0x7fff); 1352 tegra_sor_writel(sor, value, sor->soc->regs->head_state2 + dc->pipe); 1353 1354 /* blank end = sync end + back porch */ 1355 vbe = vse + (mode->vtotal - mode->vsync_end); 1356 hbe = hse + (mode->htotal - mode->hsync_end); 1357 1358 value = ((vbe & 0x7fff) << 16) | (hbe & 0x7fff); 1359 tegra_sor_writel(sor, value, sor->soc->regs->head_state3 + dc->pipe); 1360 1361 /* blank start = blank end + active */ 1362 vbs = vbe + mode->vdisplay; 1363 hbs = hbe + mode->hdisplay; 1364 1365 value = ((vbs & 0x7fff) << 16) | (hbs & 0x7fff); 1366 tegra_sor_writel(sor, value, sor->soc->regs->head_state4 + dc->pipe); 1367 1368 /* XXX interlacing support */ 1369 tegra_sor_writel(sor, 0x001, sor->soc->regs->head_state5 + dc->pipe); 1370 } 1371 1372 static int tegra_sor_detach(struct tegra_sor *sor) 1373 { 1374 unsigned long value, timeout; 1375 1376 /* switch to safe mode */ 1377 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1378 value &= ~SOR_SUPER_STATE_MODE_NORMAL; 1379 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1380 tegra_sor_super_update(sor); 1381 1382 timeout = jiffies + msecs_to_jiffies(250); 1383 1384 while (time_before(jiffies, timeout)) { 1385 value = tegra_sor_readl(sor, SOR_PWR); 1386 if (value & SOR_PWR_MODE_SAFE) 1387 break; 1388 } 1389 1390 if ((value & SOR_PWR_MODE_SAFE) == 0) 1391 return -ETIMEDOUT; 1392 1393 /* go to sleep */ 1394 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1395 value &= ~SOR_SUPER_STATE_HEAD_MODE_MASK; 1396 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1397 tegra_sor_super_update(sor); 1398 1399 /* detach */ 1400 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1401 value &= ~SOR_SUPER_STATE_ATTACHED; 1402 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1403 tegra_sor_super_update(sor); 1404 1405 timeout = jiffies + msecs_to_jiffies(250); 1406 1407 while (time_before(jiffies, timeout)) { 1408 value = tegra_sor_readl(sor, SOR_TEST); 1409 if ((value & SOR_TEST_ATTACHED) == 0) 1410 break; 1411 1412 usleep_range(25, 100); 1413 } 1414 1415 if ((value & SOR_TEST_ATTACHED) != 0) 1416 return -ETIMEDOUT; 1417 1418 return 0; 1419 } 1420 1421 static int tegra_sor_power_down(struct tegra_sor *sor) 1422 { 1423 unsigned long value, timeout; 1424 int err; 1425 1426 value = tegra_sor_readl(sor, SOR_PWR); 1427 value &= ~SOR_PWR_NORMAL_STATE_PU; 1428 value |= SOR_PWR_TRIGGER; 1429 tegra_sor_writel(sor, value, SOR_PWR); 1430 1431 timeout = jiffies + msecs_to_jiffies(250); 1432 1433 while (time_before(jiffies, timeout)) { 1434 value = tegra_sor_readl(sor, SOR_PWR); 1435 if ((value & SOR_PWR_TRIGGER) == 0) 1436 return 0; 1437 1438 usleep_range(25, 100); 1439 } 1440 1441 if ((value & SOR_PWR_TRIGGER) != 0) 1442 return -ETIMEDOUT; 1443 1444 /* switch to safe parent clock */ 1445 err = tegra_sor_set_parent_clock(sor, sor->clk_safe); 1446 if (err < 0) { 1447 dev_err(sor->dev, "failed to set safe parent clock: %d\n", err); 1448 return err; 1449 } 1450 1451 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 1452 value |= SOR_PLL2_PORT_POWERDOWN; 1453 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 1454 1455 usleep_range(20, 100); 1456 1457 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 1458 value |= SOR_PLL0_VCOPD | SOR_PLL0_PWR; 1459 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 1460 1461 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 1462 value |= SOR_PLL2_SEQ_PLLCAPPD; 1463 value |= SOR_PLL2_SEQ_PLLCAPPD_ENFORCE; 1464 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 1465 1466 usleep_range(20, 100); 1467 1468 return 0; 1469 } 1470 1471 static int tegra_sor_crc_wait(struct tegra_sor *sor, unsigned long timeout) 1472 { 1473 u32 value; 1474 1475 timeout = jiffies + msecs_to_jiffies(timeout); 1476 1477 while (time_before(jiffies, timeout)) { 1478 value = tegra_sor_readl(sor, SOR_CRCA); 1479 if (value & SOR_CRCA_VALID) 1480 return 0; 1481 1482 usleep_range(100, 200); 1483 } 1484 1485 return -ETIMEDOUT; 1486 } 1487 1488 static int tegra_sor_show_crc(struct seq_file *s, void *data) 1489 { 1490 struct drm_info_node *node = s->private; 1491 struct tegra_sor *sor = node->info_ent->data; 1492 struct drm_crtc *crtc = sor->output.encoder.crtc; 1493 struct drm_device *drm = node->minor->dev; 1494 int err = 0; 1495 u32 value; 1496 1497 drm_modeset_lock_all(drm); 1498 1499 if (!crtc || !crtc->state->active) { 1500 err = -EBUSY; 1501 goto unlock; 1502 } 1503 1504 value = tegra_sor_readl(sor, SOR_STATE1); 1505 value &= ~SOR_STATE_ASY_CRC_MODE_MASK; 1506 tegra_sor_writel(sor, value, SOR_STATE1); 1507 1508 value = tegra_sor_readl(sor, SOR_CRC_CNTRL); 1509 value |= SOR_CRC_CNTRL_ENABLE; 1510 tegra_sor_writel(sor, value, SOR_CRC_CNTRL); 1511 1512 value = tegra_sor_readl(sor, SOR_TEST); 1513 value &= ~SOR_TEST_CRC_POST_SERIALIZE; 1514 tegra_sor_writel(sor, value, SOR_TEST); 1515 1516 err = tegra_sor_crc_wait(sor, 100); 1517 if (err < 0) 1518 goto unlock; 1519 1520 tegra_sor_writel(sor, SOR_CRCA_RESET, SOR_CRCA); 1521 value = tegra_sor_readl(sor, SOR_CRCB); 1522 1523 seq_printf(s, "%08x\n", value); 1524 1525 unlock: 1526 drm_modeset_unlock_all(drm); 1527 return err; 1528 } 1529 1530 #define DEBUGFS_REG32(_name) { .name = #_name, .offset = _name } 1531 1532 static const struct debugfs_reg32 tegra_sor_regs[] = { 1533 DEBUGFS_REG32(SOR_CTXSW), 1534 DEBUGFS_REG32(SOR_SUPER_STATE0), 1535 DEBUGFS_REG32(SOR_SUPER_STATE1), 1536 DEBUGFS_REG32(SOR_STATE0), 1537 DEBUGFS_REG32(SOR_STATE1), 1538 DEBUGFS_REG32(SOR_HEAD_STATE0(0)), 1539 DEBUGFS_REG32(SOR_HEAD_STATE0(1)), 1540 DEBUGFS_REG32(SOR_HEAD_STATE1(0)), 1541 DEBUGFS_REG32(SOR_HEAD_STATE1(1)), 1542 DEBUGFS_REG32(SOR_HEAD_STATE2(0)), 1543 DEBUGFS_REG32(SOR_HEAD_STATE2(1)), 1544 DEBUGFS_REG32(SOR_HEAD_STATE3(0)), 1545 DEBUGFS_REG32(SOR_HEAD_STATE3(1)), 1546 DEBUGFS_REG32(SOR_HEAD_STATE4(0)), 1547 DEBUGFS_REG32(SOR_HEAD_STATE4(1)), 1548 DEBUGFS_REG32(SOR_HEAD_STATE5(0)), 1549 DEBUGFS_REG32(SOR_HEAD_STATE5(1)), 1550 DEBUGFS_REG32(SOR_CRC_CNTRL), 1551 DEBUGFS_REG32(SOR_DP_DEBUG_MVID), 1552 DEBUGFS_REG32(SOR_CLK_CNTRL), 1553 DEBUGFS_REG32(SOR_CAP), 1554 DEBUGFS_REG32(SOR_PWR), 1555 DEBUGFS_REG32(SOR_TEST), 1556 DEBUGFS_REG32(SOR_PLL0), 1557 DEBUGFS_REG32(SOR_PLL1), 1558 DEBUGFS_REG32(SOR_PLL2), 1559 DEBUGFS_REG32(SOR_PLL3), 1560 DEBUGFS_REG32(SOR_CSTM), 1561 DEBUGFS_REG32(SOR_LVDS), 1562 DEBUGFS_REG32(SOR_CRCA), 1563 DEBUGFS_REG32(SOR_CRCB), 1564 DEBUGFS_REG32(SOR_BLANK), 1565 DEBUGFS_REG32(SOR_SEQ_CTL), 1566 DEBUGFS_REG32(SOR_LANE_SEQ_CTL), 1567 DEBUGFS_REG32(SOR_SEQ_INST(0)), 1568 DEBUGFS_REG32(SOR_SEQ_INST(1)), 1569 DEBUGFS_REG32(SOR_SEQ_INST(2)), 1570 DEBUGFS_REG32(SOR_SEQ_INST(3)), 1571 DEBUGFS_REG32(SOR_SEQ_INST(4)), 1572 DEBUGFS_REG32(SOR_SEQ_INST(5)), 1573 DEBUGFS_REG32(SOR_SEQ_INST(6)), 1574 DEBUGFS_REG32(SOR_SEQ_INST(7)), 1575 DEBUGFS_REG32(SOR_SEQ_INST(8)), 1576 DEBUGFS_REG32(SOR_SEQ_INST(9)), 1577 DEBUGFS_REG32(SOR_SEQ_INST(10)), 1578 DEBUGFS_REG32(SOR_SEQ_INST(11)), 1579 DEBUGFS_REG32(SOR_SEQ_INST(12)), 1580 DEBUGFS_REG32(SOR_SEQ_INST(13)), 1581 DEBUGFS_REG32(SOR_SEQ_INST(14)), 1582 DEBUGFS_REG32(SOR_SEQ_INST(15)), 1583 DEBUGFS_REG32(SOR_PWM_DIV), 1584 DEBUGFS_REG32(SOR_PWM_CTL), 1585 DEBUGFS_REG32(SOR_VCRC_A0), 1586 DEBUGFS_REG32(SOR_VCRC_A1), 1587 DEBUGFS_REG32(SOR_VCRC_B0), 1588 DEBUGFS_REG32(SOR_VCRC_B1), 1589 DEBUGFS_REG32(SOR_CCRC_A0), 1590 DEBUGFS_REG32(SOR_CCRC_A1), 1591 DEBUGFS_REG32(SOR_CCRC_B0), 1592 DEBUGFS_REG32(SOR_CCRC_B1), 1593 DEBUGFS_REG32(SOR_EDATA_A0), 1594 DEBUGFS_REG32(SOR_EDATA_A1), 1595 DEBUGFS_REG32(SOR_EDATA_B0), 1596 DEBUGFS_REG32(SOR_EDATA_B1), 1597 DEBUGFS_REG32(SOR_COUNT_A0), 1598 DEBUGFS_REG32(SOR_COUNT_A1), 1599 DEBUGFS_REG32(SOR_COUNT_B0), 1600 DEBUGFS_REG32(SOR_COUNT_B1), 1601 DEBUGFS_REG32(SOR_DEBUG_A0), 1602 DEBUGFS_REG32(SOR_DEBUG_A1), 1603 DEBUGFS_REG32(SOR_DEBUG_B0), 1604 DEBUGFS_REG32(SOR_DEBUG_B1), 1605 DEBUGFS_REG32(SOR_TRIG), 1606 DEBUGFS_REG32(SOR_MSCHECK), 1607 DEBUGFS_REG32(SOR_XBAR_CTRL), 1608 DEBUGFS_REG32(SOR_XBAR_POL), 1609 DEBUGFS_REG32(SOR_DP_LINKCTL0), 1610 DEBUGFS_REG32(SOR_DP_LINKCTL1), 1611 DEBUGFS_REG32(SOR_LANE_DRIVE_CURRENT0), 1612 DEBUGFS_REG32(SOR_LANE_DRIVE_CURRENT1), 1613 DEBUGFS_REG32(SOR_LANE4_DRIVE_CURRENT0), 1614 DEBUGFS_REG32(SOR_LANE4_DRIVE_CURRENT1), 1615 DEBUGFS_REG32(SOR_LANE_PREEMPHASIS0), 1616 DEBUGFS_REG32(SOR_LANE_PREEMPHASIS1), 1617 DEBUGFS_REG32(SOR_LANE4_PREEMPHASIS0), 1618 DEBUGFS_REG32(SOR_LANE4_PREEMPHASIS1), 1619 DEBUGFS_REG32(SOR_LANE_POSTCURSOR0), 1620 DEBUGFS_REG32(SOR_LANE_POSTCURSOR1), 1621 DEBUGFS_REG32(SOR_DP_CONFIG0), 1622 DEBUGFS_REG32(SOR_DP_CONFIG1), 1623 DEBUGFS_REG32(SOR_DP_MN0), 1624 DEBUGFS_REG32(SOR_DP_MN1), 1625 DEBUGFS_REG32(SOR_DP_PADCTL0), 1626 DEBUGFS_REG32(SOR_DP_PADCTL1), 1627 DEBUGFS_REG32(SOR_DP_PADCTL2), 1628 DEBUGFS_REG32(SOR_DP_DEBUG0), 1629 DEBUGFS_REG32(SOR_DP_DEBUG1), 1630 DEBUGFS_REG32(SOR_DP_SPARE0), 1631 DEBUGFS_REG32(SOR_DP_SPARE1), 1632 DEBUGFS_REG32(SOR_DP_AUDIO_CTRL), 1633 DEBUGFS_REG32(SOR_DP_AUDIO_HBLANK_SYMBOLS), 1634 DEBUGFS_REG32(SOR_DP_AUDIO_VBLANK_SYMBOLS), 1635 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_HEADER), 1636 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK0), 1637 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK1), 1638 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK2), 1639 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK3), 1640 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK4), 1641 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK5), 1642 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK6), 1643 DEBUGFS_REG32(SOR_DP_TPG), 1644 DEBUGFS_REG32(SOR_DP_TPG_CONFIG), 1645 DEBUGFS_REG32(SOR_DP_LQ_CSTM0), 1646 DEBUGFS_REG32(SOR_DP_LQ_CSTM1), 1647 DEBUGFS_REG32(SOR_DP_LQ_CSTM2), 1648 }; 1649 1650 static int tegra_sor_show_regs(struct seq_file *s, void *data) 1651 { 1652 struct drm_info_node *node = s->private; 1653 struct tegra_sor *sor = node->info_ent->data; 1654 struct drm_crtc *crtc = sor->output.encoder.crtc; 1655 struct drm_device *drm = node->minor->dev; 1656 unsigned int i; 1657 int err = 0; 1658 1659 drm_modeset_lock_all(drm); 1660 1661 if (!crtc || !crtc->state->active) { 1662 err = -EBUSY; 1663 goto unlock; 1664 } 1665 1666 for (i = 0; i < ARRAY_SIZE(tegra_sor_regs); i++) { 1667 unsigned int offset = tegra_sor_regs[i].offset; 1668 1669 seq_printf(s, "%-38s %#05x %08x\n", tegra_sor_regs[i].name, 1670 offset, tegra_sor_readl(sor, offset)); 1671 } 1672 1673 unlock: 1674 drm_modeset_unlock_all(drm); 1675 return err; 1676 } 1677 1678 static const struct drm_info_list debugfs_files[] = { 1679 { "crc", tegra_sor_show_crc, 0, NULL }, 1680 { "regs", tegra_sor_show_regs, 0, NULL }, 1681 }; 1682 1683 static int tegra_sor_late_register(struct drm_connector *connector) 1684 { 1685 struct tegra_output *output = connector_to_output(connector); 1686 unsigned int i, count = ARRAY_SIZE(debugfs_files); 1687 struct drm_minor *minor = connector->dev->primary; 1688 struct dentry *root = connector->debugfs_entry; 1689 struct tegra_sor *sor = to_sor(output); 1690 1691 sor->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files), 1692 GFP_KERNEL); 1693 if (!sor->debugfs_files) 1694 return -ENOMEM; 1695 1696 for (i = 0; i < count; i++) 1697 sor->debugfs_files[i].data = sor; 1698 1699 drm_debugfs_create_files(sor->debugfs_files, count, root, minor); 1700 1701 return 0; 1702 } 1703 1704 static void tegra_sor_early_unregister(struct drm_connector *connector) 1705 { 1706 struct tegra_output *output = connector_to_output(connector); 1707 unsigned int count = ARRAY_SIZE(debugfs_files); 1708 struct tegra_sor *sor = to_sor(output); 1709 1710 drm_debugfs_remove_files(sor->debugfs_files, count, 1711 connector->dev->primary); 1712 kfree(sor->debugfs_files); 1713 sor->debugfs_files = NULL; 1714 } 1715 1716 static void tegra_sor_connector_reset(struct drm_connector *connector) 1717 { 1718 struct tegra_sor_state *state; 1719 1720 state = kzalloc(sizeof(*state), GFP_KERNEL); 1721 if (!state) 1722 return; 1723 1724 if (connector->state) { 1725 __drm_atomic_helper_connector_destroy_state(connector->state); 1726 kfree(connector->state); 1727 } 1728 1729 __drm_atomic_helper_connector_reset(connector, &state->base); 1730 } 1731 1732 static enum drm_connector_status 1733 tegra_sor_connector_detect(struct drm_connector *connector, bool force) 1734 { 1735 struct tegra_output *output = connector_to_output(connector); 1736 struct tegra_sor *sor = to_sor(output); 1737 1738 if (sor->aux) 1739 return drm_dp_aux_detect(sor->aux); 1740 1741 return tegra_output_connector_detect(connector, force); 1742 } 1743 1744 static struct drm_connector_state * 1745 tegra_sor_connector_duplicate_state(struct drm_connector *connector) 1746 { 1747 struct tegra_sor_state *state = to_sor_state(connector->state); 1748 struct tegra_sor_state *copy; 1749 1750 copy = kmemdup(state, sizeof(*state), GFP_KERNEL); 1751 if (!copy) 1752 return NULL; 1753 1754 __drm_atomic_helper_connector_duplicate_state(connector, ©->base); 1755 1756 return ©->base; 1757 } 1758 1759 static const struct drm_connector_funcs tegra_sor_connector_funcs = { 1760 .reset = tegra_sor_connector_reset, 1761 .detect = tegra_sor_connector_detect, 1762 .fill_modes = drm_helper_probe_single_connector_modes, 1763 .destroy = tegra_output_connector_destroy, 1764 .atomic_duplicate_state = tegra_sor_connector_duplicate_state, 1765 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 1766 .late_register = tegra_sor_late_register, 1767 .early_unregister = tegra_sor_early_unregister, 1768 }; 1769 1770 static int tegra_sor_connector_get_modes(struct drm_connector *connector) 1771 { 1772 struct tegra_output *output = connector_to_output(connector); 1773 struct tegra_sor *sor = to_sor(output); 1774 int err; 1775 1776 if (sor->aux) 1777 drm_dp_aux_enable(sor->aux); 1778 1779 err = tegra_output_connector_get_modes(connector); 1780 1781 if (sor->aux) 1782 drm_dp_aux_disable(sor->aux); 1783 1784 return err; 1785 } 1786 1787 static enum drm_mode_status 1788 tegra_sor_connector_mode_valid(struct drm_connector *connector, 1789 struct drm_display_mode *mode) 1790 { 1791 return MODE_OK; 1792 } 1793 1794 static const struct drm_connector_helper_funcs tegra_sor_connector_helper_funcs = { 1795 .get_modes = tegra_sor_connector_get_modes, 1796 .mode_valid = tegra_sor_connector_mode_valid, 1797 }; 1798 1799 static int 1800 tegra_sor_encoder_atomic_check(struct drm_encoder *encoder, 1801 struct drm_crtc_state *crtc_state, 1802 struct drm_connector_state *conn_state) 1803 { 1804 struct tegra_output *output = encoder_to_output(encoder); 1805 struct tegra_sor_state *state = to_sor_state(conn_state); 1806 struct tegra_dc *dc = to_tegra_dc(conn_state->crtc); 1807 unsigned long pclk = crtc_state->mode.clock * 1000; 1808 struct tegra_sor *sor = to_sor(output); 1809 struct drm_display_info *info; 1810 int err; 1811 1812 info = &output->connector.display_info; 1813 1814 /* 1815 * For HBR2 modes, the SOR brick needs to use the x20 multiplier, so 1816 * the pixel clock must be corrected accordingly. 1817 */ 1818 if (pclk >= 340000000) { 1819 state->link_speed = 20; 1820 state->pclk = pclk / 2; 1821 } else { 1822 state->link_speed = 10; 1823 state->pclk = pclk; 1824 } 1825 1826 err = tegra_dc_state_setup_clock(dc, crtc_state, sor->clk_parent, 1827 pclk, 0); 1828 if (err < 0) { 1829 dev_err(output->dev, "failed to setup CRTC state: %d\n", err); 1830 return err; 1831 } 1832 1833 switch (info->bpc) { 1834 case 8: 1835 case 6: 1836 state->bpc = info->bpc; 1837 break; 1838 1839 default: 1840 DRM_DEBUG_KMS("%u bits-per-color not supported\n", info->bpc); 1841 state->bpc = 8; 1842 break; 1843 } 1844 1845 return 0; 1846 } 1847 1848 static inline u32 tegra_sor_hdmi_subpack(const u8 *ptr, size_t size) 1849 { 1850 u32 value = 0; 1851 size_t i; 1852 1853 for (i = size; i > 0; i--) 1854 value = (value << 8) | ptr[i - 1]; 1855 1856 return value; 1857 } 1858 1859 static void tegra_sor_hdmi_write_infopack(struct tegra_sor *sor, 1860 const void *data, size_t size) 1861 { 1862 const u8 *ptr = data; 1863 unsigned long offset; 1864 size_t i, j; 1865 u32 value; 1866 1867 switch (ptr[0]) { 1868 case HDMI_INFOFRAME_TYPE_AVI: 1869 offset = SOR_HDMI_AVI_INFOFRAME_HEADER; 1870 break; 1871 1872 case HDMI_INFOFRAME_TYPE_AUDIO: 1873 offset = SOR_HDMI_AUDIO_INFOFRAME_HEADER; 1874 break; 1875 1876 case HDMI_INFOFRAME_TYPE_VENDOR: 1877 offset = SOR_HDMI_VSI_INFOFRAME_HEADER; 1878 break; 1879 1880 default: 1881 dev_err(sor->dev, "unsupported infoframe type: %02x\n", 1882 ptr[0]); 1883 return; 1884 } 1885 1886 value = INFOFRAME_HEADER_TYPE(ptr[0]) | 1887 INFOFRAME_HEADER_VERSION(ptr[1]) | 1888 INFOFRAME_HEADER_LEN(ptr[2]); 1889 tegra_sor_writel(sor, value, offset); 1890 offset++; 1891 1892 /* 1893 * Each subpack contains 7 bytes, divided into: 1894 * - subpack_low: bytes 0 - 3 1895 * - subpack_high: bytes 4 - 6 (with byte 7 padded to 0x00) 1896 */ 1897 for (i = 3, j = 0; i < size; i += 7, j += 8) { 1898 size_t rem = size - i, num = min_t(size_t, rem, 4); 1899 1900 value = tegra_sor_hdmi_subpack(&ptr[i], num); 1901 tegra_sor_writel(sor, value, offset++); 1902 1903 num = min_t(size_t, rem - num, 3); 1904 1905 value = tegra_sor_hdmi_subpack(&ptr[i + 4], num); 1906 tegra_sor_writel(sor, value, offset++); 1907 } 1908 } 1909 1910 static int 1911 tegra_sor_hdmi_setup_avi_infoframe(struct tegra_sor *sor, 1912 const struct drm_display_mode *mode) 1913 { 1914 u8 buffer[HDMI_INFOFRAME_SIZE(AVI)]; 1915 struct hdmi_avi_infoframe frame; 1916 u32 value; 1917 int err; 1918 1919 /* disable AVI infoframe */ 1920 value = tegra_sor_readl(sor, SOR_HDMI_AVI_INFOFRAME_CTRL); 1921 value &= ~INFOFRAME_CTRL_SINGLE; 1922 value &= ~INFOFRAME_CTRL_OTHER; 1923 value &= ~INFOFRAME_CTRL_ENABLE; 1924 tegra_sor_writel(sor, value, SOR_HDMI_AVI_INFOFRAME_CTRL); 1925 1926 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, 1927 &sor->output.connector, mode); 1928 if (err < 0) { 1929 dev_err(sor->dev, "failed to setup AVI infoframe: %d\n", err); 1930 return err; 1931 } 1932 1933 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer)); 1934 if (err < 0) { 1935 dev_err(sor->dev, "failed to pack AVI infoframe: %d\n", err); 1936 return err; 1937 } 1938 1939 tegra_sor_hdmi_write_infopack(sor, buffer, err); 1940 1941 /* enable AVI infoframe */ 1942 value = tegra_sor_readl(sor, SOR_HDMI_AVI_INFOFRAME_CTRL); 1943 value |= INFOFRAME_CTRL_CHECKSUM_ENABLE; 1944 value |= INFOFRAME_CTRL_ENABLE; 1945 tegra_sor_writel(sor, value, SOR_HDMI_AVI_INFOFRAME_CTRL); 1946 1947 return 0; 1948 } 1949 1950 static void tegra_sor_write_eld(struct tegra_sor *sor) 1951 { 1952 size_t length = drm_eld_size(sor->output.connector.eld), i; 1953 1954 for (i = 0; i < length; i++) 1955 tegra_sor_writel(sor, i << 8 | sor->output.connector.eld[i], 1956 SOR_AUDIO_HDA_ELD_BUFWR); 1957 1958 /* 1959 * The HDA codec will always report an ELD buffer size of 96 bytes and 1960 * the HDA codec driver will check that each byte read from the buffer 1961 * is valid. Therefore every byte must be written, even if no 96 bytes 1962 * were parsed from EDID. 1963 */ 1964 for (i = length; i < 96; i++) 1965 tegra_sor_writel(sor, i << 8 | 0, SOR_AUDIO_HDA_ELD_BUFWR); 1966 } 1967 1968 static void tegra_sor_audio_prepare(struct tegra_sor *sor) 1969 { 1970 u32 value; 1971 1972 /* 1973 * Enable and unmask the HDA codec SCRATCH0 register interrupt. This 1974 * is used for interoperability between the HDA codec driver and the 1975 * HDMI/DP driver. 1976 */ 1977 value = SOR_INT_CODEC_SCRATCH1 | SOR_INT_CODEC_SCRATCH0; 1978 tegra_sor_writel(sor, value, SOR_INT_ENABLE); 1979 tegra_sor_writel(sor, value, SOR_INT_MASK); 1980 1981 tegra_sor_write_eld(sor); 1982 1983 value = SOR_AUDIO_HDA_PRESENSE_ELDV | SOR_AUDIO_HDA_PRESENSE_PD; 1984 tegra_sor_writel(sor, value, SOR_AUDIO_HDA_PRESENSE); 1985 } 1986 1987 static void tegra_sor_audio_unprepare(struct tegra_sor *sor) 1988 { 1989 tegra_sor_writel(sor, 0, SOR_AUDIO_HDA_PRESENSE); 1990 tegra_sor_writel(sor, 0, SOR_INT_MASK); 1991 tegra_sor_writel(sor, 0, SOR_INT_ENABLE); 1992 } 1993 1994 static void tegra_sor_audio_enable(struct tegra_sor *sor) 1995 { 1996 u32 value; 1997 1998 value = tegra_sor_readl(sor, SOR_AUDIO_CNTRL); 1999 2000 /* select HDA audio input */ 2001 value &= ~SOR_AUDIO_CNTRL_SOURCE_SELECT(SOURCE_SELECT_MASK); 2002 value |= SOR_AUDIO_CNTRL_SOURCE_SELECT(SOURCE_SELECT_HDA); 2003 2004 /* inject null samples */ 2005 if (sor->format.channels != 2) 2006 value &= ~SOR_AUDIO_CNTRL_INJECT_NULLSMPL; 2007 else 2008 value |= SOR_AUDIO_CNTRL_INJECT_NULLSMPL; 2009 2010 value |= SOR_AUDIO_CNTRL_AFIFO_FLUSH; 2011 2012 tegra_sor_writel(sor, value, SOR_AUDIO_CNTRL); 2013 2014 /* enable advertising HBR capability */ 2015 tegra_sor_writel(sor, SOR_AUDIO_SPARE_HBR_ENABLE, SOR_AUDIO_SPARE); 2016 } 2017 2018 static int tegra_sor_hdmi_enable_audio_infoframe(struct tegra_sor *sor) 2019 { 2020 u8 buffer[HDMI_INFOFRAME_SIZE(AUDIO)]; 2021 struct hdmi_audio_infoframe frame; 2022 u32 value; 2023 int err; 2024 2025 err = hdmi_audio_infoframe_init(&frame); 2026 if (err < 0) { 2027 dev_err(sor->dev, "failed to setup audio infoframe: %d\n", err); 2028 return err; 2029 } 2030 2031 frame.channels = sor->format.channels; 2032 2033 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); 2034 if (err < 0) { 2035 dev_err(sor->dev, "failed to pack audio infoframe: %d\n", err); 2036 return err; 2037 } 2038 2039 tegra_sor_hdmi_write_infopack(sor, buffer, err); 2040 2041 value = tegra_sor_readl(sor, SOR_HDMI_AUDIO_INFOFRAME_CTRL); 2042 value |= INFOFRAME_CTRL_CHECKSUM_ENABLE; 2043 value |= INFOFRAME_CTRL_ENABLE; 2044 tegra_sor_writel(sor, value, SOR_HDMI_AUDIO_INFOFRAME_CTRL); 2045 2046 return 0; 2047 } 2048 2049 static void tegra_sor_hdmi_audio_enable(struct tegra_sor *sor) 2050 { 2051 u32 value; 2052 2053 tegra_sor_audio_enable(sor); 2054 2055 tegra_sor_writel(sor, 0, SOR_HDMI_ACR_CTRL); 2056 2057 value = SOR_HDMI_SPARE_ACR_PRIORITY_HIGH | 2058 SOR_HDMI_SPARE_CTS_RESET(1) | 2059 SOR_HDMI_SPARE_HW_CTS_ENABLE; 2060 tegra_sor_writel(sor, value, SOR_HDMI_SPARE); 2061 2062 /* enable HW CTS */ 2063 value = SOR_HDMI_ACR_SUBPACK_LOW_SB1(0); 2064 tegra_sor_writel(sor, value, SOR_HDMI_ACR_0441_SUBPACK_LOW); 2065 2066 /* allow packet to be sent */ 2067 value = SOR_HDMI_ACR_SUBPACK_HIGH_ENABLE; 2068 tegra_sor_writel(sor, value, SOR_HDMI_ACR_0441_SUBPACK_HIGH); 2069 2070 /* reset N counter and enable lookup */ 2071 value = SOR_HDMI_AUDIO_N_RESET | SOR_HDMI_AUDIO_N_LOOKUP; 2072 tegra_sor_writel(sor, value, SOR_HDMI_AUDIO_N); 2073 2074 value = (24000 * 4096) / (128 * sor->format.sample_rate / 1000); 2075 tegra_sor_writel(sor, value, SOR_AUDIO_AVAL_0320); 2076 tegra_sor_writel(sor, 4096, SOR_AUDIO_NVAL_0320); 2077 2078 tegra_sor_writel(sor, 20000, SOR_AUDIO_AVAL_0441); 2079 tegra_sor_writel(sor, 4704, SOR_AUDIO_NVAL_0441); 2080 2081 tegra_sor_writel(sor, 20000, SOR_AUDIO_AVAL_0882); 2082 tegra_sor_writel(sor, 9408, SOR_AUDIO_NVAL_0882); 2083 2084 tegra_sor_writel(sor, 20000, SOR_AUDIO_AVAL_1764); 2085 tegra_sor_writel(sor, 18816, SOR_AUDIO_NVAL_1764); 2086 2087 value = (24000 * 6144) / (128 * sor->format.sample_rate / 1000); 2088 tegra_sor_writel(sor, value, SOR_AUDIO_AVAL_0480); 2089 tegra_sor_writel(sor, 6144, SOR_AUDIO_NVAL_0480); 2090 2091 value = (24000 * 12288) / (128 * sor->format.sample_rate / 1000); 2092 tegra_sor_writel(sor, value, SOR_AUDIO_AVAL_0960); 2093 tegra_sor_writel(sor, 12288, SOR_AUDIO_NVAL_0960); 2094 2095 value = (24000 * 24576) / (128 * sor->format.sample_rate / 1000); 2096 tegra_sor_writel(sor, value, SOR_AUDIO_AVAL_1920); 2097 tegra_sor_writel(sor, 24576, SOR_AUDIO_NVAL_1920); 2098 2099 value = tegra_sor_readl(sor, SOR_HDMI_AUDIO_N); 2100 value &= ~SOR_HDMI_AUDIO_N_RESET; 2101 tegra_sor_writel(sor, value, SOR_HDMI_AUDIO_N); 2102 2103 tegra_sor_hdmi_enable_audio_infoframe(sor); 2104 } 2105 2106 static void tegra_sor_hdmi_disable_audio_infoframe(struct tegra_sor *sor) 2107 { 2108 u32 value; 2109 2110 value = tegra_sor_readl(sor, SOR_HDMI_AUDIO_INFOFRAME_CTRL); 2111 value &= ~INFOFRAME_CTRL_ENABLE; 2112 tegra_sor_writel(sor, value, SOR_HDMI_AUDIO_INFOFRAME_CTRL); 2113 } 2114 2115 static void tegra_sor_hdmi_audio_disable(struct tegra_sor *sor) 2116 { 2117 tegra_sor_hdmi_disable_audio_infoframe(sor); 2118 } 2119 2120 static struct tegra_sor_hdmi_settings * 2121 tegra_sor_hdmi_find_settings(struct tegra_sor *sor, unsigned long frequency) 2122 { 2123 unsigned int i; 2124 2125 for (i = 0; i < sor->num_settings; i++) 2126 if (frequency <= sor->settings[i].frequency) 2127 return &sor->settings[i]; 2128 2129 return NULL; 2130 } 2131 2132 static void tegra_sor_hdmi_disable_scrambling(struct tegra_sor *sor) 2133 { 2134 u32 value; 2135 2136 value = tegra_sor_readl(sor, SOR_HDMI2_CTRL); 2137 value &= ~SOR_HDMI2_CTRL_CLOCK_MODE_DIV_BY_4; 2138 value &= ~SOR_HDMI2_CTRL_SCRAMBLE; 2139 tegra_sor_writel(sor, value, SOR_HDMI2_CTRL); 2140 } 2141 2142 static void tegra_sor_hdmi_scdc_disable(struct tegra_sor *sor) 2143 { 2144 struct i2c_adapter *ddc = sor->output.ddc; 2145 2146 drm_scdc_set_high_tmds_clock_ratio(ddc, false); 2147 drm_scdc_set_scrambling(ddc, false); 2148 2149 tegra_sor_hdmi_disable_scrambling(sor); 2150 } 2151 2152 static void tegra_sor_hdmi_scdc_stop(struct tegra_sor *sor) 2153 { 2154 if (sor->scdc_enabled) { 2155 cancel_delayed_work_sync(&sor->scdc); 2156 tegra_sor_hdmi_scdc_disable(sor); 2157 } 2158 } 2159 2160 static void tegra_sor_hdmi_enable_scrambling(struct tegra_sor *sor) 2161 { 2162 u32 value; 2163 2164 value = tegra_sor_readl(sor, SOR_HDMI2_CTRL); 2165 value |= SOR_HDMI2_CTRL_CLOCK_MODE_DIV_BY_4; 2166 value |= SOR_HDMI2_CTRL_SCRAMBLE; 2167 tegra_sor_writel(sor, value, SOR_HDMI2_CTRL); 2168 } 2169 2170 static void tegra_sor_hdmi_scdc_enable(struct tegra_sor *sor) 2171 { 2172 struct i2c_adapter *ddc = sor->output.ddc; 2173 2174 drm_scdc_set_high_tmds_clock_ratio(ddc, true); 2175 drm_scdc_set_scrambling(ddc, true); 2176 2177 tegra_sor_hdmi_enable_scrambling(sor); 2178 } 2179 2180 static void tegra_sor_hdmi_scdc_work(struct work_struct *work) 2181 { 2182 struct tegra_sor *sor = container_of(work, struct tegra_sor, scdc.work); 2183 struct i2c_adapter *ddc = sor->output.ddc; 2184 2185 if (!drm_scdc_get_scrambling_status(ddc)) { 2186 DRM_DEBUG_KMS("SCDC not scrambled\n"); 2187 tegra_sor_hdmi_scdc_enable(sor); 2188 } 2189 2190 schedule_delayed_work(&sor->scdc, msecs_to_jiffies(5000)); 2191 } 2192 2193 static void tegra_sor_hdmi_scdc_start(struct tegra_sor *sor) 2194 { 2195 struct drm_scdc *scdc = &sor->output.connector.display_info.hdmi.scdc; 2196 struct drm_display_mode *mode; 2197 2198 mode = &sor->output.encoder.crtc->state->adjusted_mode; 2199 2200 if (mode->clock >= 340000 && scdc->supported) { 2201 schedule_delayed_work(&sor->scdc, msecs_to_jiffies(5000)); 2202 tegra_sor_hdmi_scdc_enable(sor); 2203 sor->scdc_enabled = true; 2204 } 2205 } 2206 2207 static void tegra_sor_hdmi_disable(struct drm_encoder *encoder) 2208 { 2209 struct tegra_output *output = encoder_to_output(encoder); 2210 struct tegra_dc *dc = to_tegra_dc(encoder->crtc); 2211 struct tegra_sor *sor = to_sor(output); 2212 u32 value; 2213 int err; 2214 2215 tegra_sor_audio_unprepare(sor); 2216 tegra_sor_hdmi_scdc_stop(sor); 2217 2218 err = tegra_sor_detach(sor); 2219 if (err < 0) 2220 dev_err(sor->dev, "failed to detach SOR: %d\n", err); 2221 2222 tegra_sor_writel(sor, 0, SOR_STATE1); 2223 tegra_sor_update(sor); 2224 2225 /* disable display to SOR clock */ 2226 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); 2227 2228 if (!sor->soc->has_nvdisplay) 2229 value &= ~SOR1_TIMING_CYA; 2230 2231 value &= ~SOR_ENABLE(sor->index); 2232 2233 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); 2234 2235 tegra_dc_commit(dc); 2236 2237 err = tegra_sor_power_down(sor); 2238 if (err < 0) 2239 dev_err(sor->dev, "failed to power down SOR: %d\n", err); 2240 2241 err = tegra_io_pad_power_disable(sor->pad); 2242 if (err < 0) 2243 dev_err(sor->dev, "failed to power off I/O pad: %d\n", err); 2244 2245 host1x_client_suspend(&sor->client); 2246 } 2247 2248 static void tegra_sor_hdmi_enable(struct drm_encoder *encoder) 2249 { 2250 struct tegra_output *output = encoder_to_output(encoder); 2251 unsigned int h_ref_to_sync = 1, pulse_start, max_ac; 2252 struct tegra_dc *dc = to_tegra_dc(encoder->crtc); 2253 struct tegra_sor_hdmi_settings *settings; 2254 struct tegra_sor *sor = to_sor(output); 2255 struct tegra_sor_state *state; 2256 struct drm_display_mode *mode; 2257 unsigned long rate, pclk; 2258 unsigned int div, i; 2259 u32 value; 2260 int err; 2261 2262 state = to_sor_state(output->connector.state); 2263 mode = &encoder->crtc->state->adjusted_mode; 2264 pclk = mode->clock * 1000; 2265 2266 err = host1x_client_resume(&sor->client); 2267 if (err < 0) { 2268 dev_err(sor->dev, "failed to resume: %d\n", err); 2269 return; 2270 } 2271 2272 /* switch to safe parent clock */ 2273 err = tegra_sor_set_parent_clock(sor, sor->clk_safe); 2274 if (err < 0) { 2275 dev_err(sor->dev, "failed to set safe parent clock: %d\n", err); 2276 return; 2277 } 2278 2279 div = clk_get_rate(sor->clk) / 1000000 * 4; 2280 2281 err = tegra_io_pad_power_enable(sor->pad); 2282 if (err < 0) 2283 dev_err(sor->dev, "failed to power on I/O pad: %d\n", err); 2284 2285 usleep_range(20, 100); 2286 2287 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2288 value &= ~SOR_PLL2_BANDGAP_POWERDOWN; 2289 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2290 2291 usleep_range(20, 100); 2292 2293 value = tegra_sor_readl(sor, sor->soc->regs->pll3); 2294 value &= ~SOR_PLL3_PLL_VDD_MODE_3V3; 2295 tegra_sor_writel(sor, value, sor->soc->regs->pll3); 2296 2297 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 2298 value &= ~SOR_PLL0_VCOPD; 2299 value &= ~SOR_PLL0_PWR; 2300 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 2301 2302 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2303 value &= ~SOR_PLL2_SEQ_PLLCAPPD_ENFORCE; 2304 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2305 2306 usleep_range(200, 400); 2307 2308 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2309 value &= ~SOR_PLL2_POWERDOWN_OVERRIDE; 2310 value &= ~SOR_PLL2_PORT_POWERDOWN; 2311 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2312 2313 usleep_range(20, 100); 2314 2315 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 2316 value |= SOR_DP_PADCTL_PD_TXD_3 | SOR_DP_PADCTL_PD_TXD_0 | 2317 SOR_DP_PADCTL_PD_TXD_1 | SOR_DP_PADCTL_PD_TXD_2; 2318 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 2319 2320 while (true) { 2321 value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL); 2322 if ((value & SOR_LANE_SEQ_CTL_STATE_BUSY) == 0) 2323 break; 2324 2325 usleep_range(250, 1000); 2326 } 2327 2328 value = SOR_LANE_SEQ_CTL_TRIGGER | SOR_LANE_SEQ_CTL_SEQUENCE_DOWN | 2329 SOR_LANE_SEQ_CTL_POWER_STATE_UP | SOR_LANE_SEQ_CTL_DELAY(5); 2330 tegra_sor_writel(sor, value, SOR_LANE_SEQ_CTL); 2331 2332 while (true) { 2333 value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL); 2334 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) == 0) 2335 break; 2336 2337 usleep_range(250, 1000); 2338 } 2339 2340 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 2341 value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK; 2342 value &= ~SOR_CLK_CNTRL_DP_CLK_SEL_MASK; 2343 2344 if (mode->clock < 340000) { 2345 DRM_DEBUG_KMS("setting 2.7 GHz link speed\n"); 2346 value |= SOR_CLK_CNTRL_DP_LINK_SPEED_G2_70; 2347 } else { 2348 DRM_DEBUG_KMS("setting 5.4 GHz link speed\n"); 2349 value |= SOR_CLK_CNTRL_DP_LINK_SPEED_G5_40; 2350 } 2351 2352 value |= SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_PCLK; 2353 tegra_sor_writel(sor, value, SOR_CLK_CNTRL); 2354 2355 /* SOR pad PLL stabilization time */ 2356 usleep_range(250, 1000); 2357 2358 value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); 2359 value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK; 2360 value |= SOR_DP_LINKCTL_LANE_COUNT(4); 2361 tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); 2362 2363 value = tegra_sor_readl(sor, SOR_DP_SPARE0); 2364 value &= ~SOR_DP_SPARE_DISP_VIDEO_PREAMBLE; 2365 value &= ~SOR_DP_SPARE_PANEL_INTERNAL; 2366 value &= ~SOR_DP_SPARE_SEQ_ENABLE; 2367 value &= ~SOR_DP_SPARE_MACRO_SOR_CLK; 2368 tegra_sor_writel(sor, value, SOR_DP_SPARE0); 2369 2370 value = SOR_SEQ_CTL_PU_PC(0) | SOR_SEQ_CTL_PU_PC_ALT(0) | 2371 SOR_SEQ_CTL_PD_PC(8) | SOR_SEQ_CTL_PD_PC_ALT(8); 2372 tegra_sor_writel(sor, value, SOR_SEQ_CTL); 2373 2374 value = SOR_SEQ_INST_DRIVE_PWM_OUT_LO | SOR_SEQ_INST_HALT | 2375 SOR_SEQ_INST_WAIT_VSYNC | SOR_SEQ_INST_WAIT(1); 2376 tegra_sor_writel(sor, value, SOR_SEQ_INST(0)); 2377 tegra_sor_writel(sor, value, SOR_SEQ_INST(8)); 2378 2379 if (!sor->soc->has_nvdisplay) { 2380 /* program the reference clock */ 2381 value = SOR_REFCLK_DIV_INT(div) | SOR_REFCLK_DIV_FRAC(div); 2382 tegra_sor_writel(sor, value, SOR_REFCLK); 2383 } 2384 2385 /* XXX not in TRM */ 2386 for (value = 0, i = 0; i < 5; i++) 2387 value |= SOR_XBAR_CTRL_LINK0_XSEL(i, sor->xbar_cfg[i]) | 2388 SOR_XBAR_CTRL_LINK1_XSEL(i, i); 2389 2390 tegra_sor_writel(sor, 0x00000000, SOR_XBAR_POL); 2391 tegra_sor_writel(sor, value, SOR_XBAR_CTRL); 2392 2393 /* 2394 * Switch the pad clock to the DP clock. Note that we cannot actually 2395 * do this because Tegra186 and later don't support clk_set_parent() 2396 * on the sorX_pad_clkout clocks. We already do the equivalent above 2397 * using the DP_CLK_SEL mux of the SOR_CLK_CNTRL register. 2398 */ 2399 #if 0 2400 err = clk_set_parent(sor->clk_pad, sor->clk_dp); 2401 if (err < 0) { 2402 dev_err(sor->dev, "failed to select pad parent clock: %d\n", 2403 err); 2404 return; 2405 } 2406 #endif 2407 2408 /* switch the SOR clock to the pad clock */ 2409 err = tegra_sor_set_parent_clock(sor, sor->clk_pad); 2410 if (err < 0) { 2411 dev_err(sor->dev, "failed to select SOR parent clock: %d\n", 2412 err); 2413 return; 2414 } 2415 2416 /* switch the output clock to the parent pixel clock */ 2417 err = clk_set_parent(sor->clk, sor->clk_parent); 2418 if (err < 0) { 2419 dev_err(sor->dev, "failed to select output parent clock: %d\n", 2420 err); 2421 return; 2422 } 2423 2424 /* adjust clock rate for HDMI 2.0 modes */ 2425 rate = clk_get_rate(sor->clk_parent); 2426 2427 if (mode->clock >= 340000) 2428 rate /= 2; 2429 2430 DRM_DEBUG_KMS("setting clock to %lu Hz, mode: %lu Hz\n", rate, pclk); 2431 2432 clk_set_rate(sor->clk, rate); 2433 2434 if (!sor->soc->has_nvdisplay) { 2435 value = SOR_INPUT_CONTROL_HDMI_SRC_SELECT(dc->pipe); 2436 2437 /* XXX is this the proper check? */ 2438 if (mode->clock < 75000) 2439 value |= SOR_INPUT_CONTROL_ARM_VIDEO_RANGE_LIMITED; 2440 2441 tegra_sor_writel(sor, value, SOR_INPUT_CONTROL); 2442 } 2443 2444 max_ac = ((mode->htotal - mode->hdisplay) - SOR_REKEY - 18) / 32; 2445 2446 value = SOR_HDMI_CTRL_ENABLE | SOR_HDMI_CTRL_MAX_AC_PACKET(max_ac) | 2447 SOR_HDMI_CTRL_AUDIO_LAYOUT | SOR_HDMI_CTRL_REKEY(SOR_REKEY); 2448 tegra_sor_writel(sor, value, SOR_HDMI_CTRL); 2449 2450 if (!dc->soc->has_nvdisplay) { 2451 /* H_PULSE2 setup */ 2452 pulse_start = h_ref_to_sync + 2453 (mode->hsync_end - mode->hsync_start) + 2454 (mode->htotal - mode->hsync_end) - 10; 2455 2456 value = PULSE_LAST_END_A | PULSE_QUAL_VACTIVE | 2457 PULSE_POLARITY_HIGH | PULSE_MODE_NORMAL; 2458 tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_CONTROL); 2459 2460 value = PULSE_END(pulse_start + 8) | PULSE_START(pulse_start); 2461 tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_POSITION_A); 2462 2463 value = tegra_dc_readl(dc, DC_DISP_DISP_SIGNAL_OPTIONS0); 2464 value |= H_PULSE2_ENABLE; 2465 tegra_dc_writel(dc, value, DC_DISP_DISP_SIGNAL_OPTIONS0); 2466 } 2467 2468 /* infoframe setup */ 2469 err = tegra_sor_hdmi_setup_avi_infoframe(sor, mode); 2470 if (err < 0) 2471 dev_err(sor->dev, "failed to setup AVI infoframe: %d\n", err); 2472 2473 /* XXX HDMI audio support not implemented yet */ 2474 tegra_sor_hdmi_disable_audio_infoframe(sor); 2475 2476 /* use single TMDS protocol */ 2477 value = tegra_sor_readl(sor, SOR_STATE1); 2478 value &= ~SOR_STATE_ASY_PROTOCOL_MASK; 2479 value |= SOR_STATE_ASY_PROTOCOL_SINGLE_TMDS_A; 2480 tegra_sor_writel(sor, value, SOR_STATE1); 2481 2482 /* power up pad calibration */ 2483 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 2484 value &= ~SOR_DP_PADCTL_PAD_CAL_PD; 2485 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 2486 2487 /* production settings */ 2488 settings = tegra_sor_hdmi_find_settings(sor, mode->clock * 1000); 2489 if (!settings) { 2490 dev_err(sor->dev, "no settings for pixel clock %d Hz\n", 2491 mode->clock * 1000); 2492 return; 2493 } 2494 2495 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 2496 value &= ~SOR_PLL0_ICHPMP_MASK; 2497 value &= ~SOR_PLL0_FILTER_MASK; 2498 value &= ~SOR_PLL0_VCOCAP_MASK; 2499 value |= SOR_PLL0_ICHPMP(settings->ichpmp); 2500 value |= SOR_PLL0_FILTER(settings->filter); 2501 value |= SOR_PLL0_VCOCAP(settings->vcocap); 2502 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 2503 2504 /* XXX not in TRM */ 2505 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 2506 value &= ~SOR_PLL1_LOADADJ_MASK; 2507 value &= ~SOR_PLL1_TMDS_TERMADJ_MASK; 2508 value |= SOR_PLL1_LOADADJ(settings->loadadj); 2509 value |= SOR_PLL1_TMDS_TERMADJ(settings->tmds_termadj); 2510 value |= SOR_PLL1_TMDS_TERM; 2511 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 2512 2513 value = tegra_sor_readl(sor, sor->soc->regs->pll3); 2514 value &= ~SOR_PLL3_BG_TEMP_COEF_MASK; 2515 value &= ~SOR_PLL3_BG_VREF_LEVEL_MASK; 2516 value &= ~SOR_PLL3_AVDD10_LEVEL_MASK; 2517 value &= ~SOR_PLL3_AVDD14_LEVEL_MASK; 2518 value |= SOR_PLL3_BG_TEMP_COEF(settings->bg_temp_coef); 2519 value |= SOR_PLL3_BG_VREF_LEVEL(settings->bg_vref_level); 2520 value |= SOR_PLL3_AVDD10_LEVEL(settings->avdd10_level); 2521 value |= SOR_PLL3_AVDD14_LEVEL(settings->avdd14_level); 2522 tegra_sor_writel(sor, value, sor->soc->regs->pll3); 2523 2524 value = settings->drive_current[3] << 24 | 2525 settings->drive_current[2] << 16 | 2526 settings->drive_current[1] << 8 | 2527 settings->drive_current[0] << 0; 2528 tegra_sor_writel(sor, value, SOR_LANE_DRIVE_CURRENT0); 2529 2530 value = settings->preemphasis[3] << 24 | 2531 settings->preemphasis[2] << 16 | 2532 settings->preemphasis[1] << 8 | 2533 settings->preemphasis[0] << 0; 2534 tegra_sor_writel(sor, value, SOR_LANE_PREEMPHASIS0); 2535 2536 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 2537 value &= ~SOR_DP_PADCTL_TX_PU_MASK; 2538 value |= SOR_DP_PADCTL_TX_PU_ENABLE; 2539 value |= SOR_DP_PADCTL_TX_PU(settings->tx_pu_value); 2540 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 2541 2542 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl2); 2543 value &= ~SOR_DP_PADCTL_SPAREPLL_MASK; 2544 value |= SOR_DP_PADCTL_SPAREPLL(settings->sparepll); 2545 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl2); 2546 2547 /* power down pad calibration */ 2548 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 2549 value |= SOR_DP_PADCTL_PAD_CAL_PD; 2550 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 2551 2552 if (!dc->soc->has_nvdisplay) { 2553 /* miscellaneous display controller settings */ 2554 value = VSYNC_H_POSITION(1); 2555 tegra_dc_writel(dc, value, DC_DISP_DISP_TIMING_OPTIONS); 2556 } 2557 2558 value = tegra_dc_readl(dc, DC_DISP_DISP_COLOR_CONTROL); 2559 value &= ~DITHER_CONTROL_MASK; 2560 value &= ~BASE_COLOR_SIZE_MASK; 2561 2562 switch (state->bpc) { 2563 case 6: 2564 value |= BASE_COLOR_SIZE_666; 2565 break; 2566 2567 case 8: 2568 value |= BASE_COLOR_SIZE_888; 2569 break; 2570 2571 case 10: 2572 value |= BASE_COLOR_SIZE_101010; 2573 break; 2574 2575 case 12: 2576 value |= BASE_COLOR_SIZE_121212; 2577 break; 2578 2579 default: 2580 WARN(1, "%u bits-per-color not supported\n", state->bpc); 2581 value |= BASE_COLOR_SIZE_888; 2582 break; 2583 } 2584 2585 tegra_dc_writel(dc, value, DC_DISP_DISP_COLOR_CONTROL); 2586 2587 /* XXX set display head owner */ 2588 value = tegra_sor_readl(sor, SOR_STATE1); 2589 value &= ~SOR_STATE_ASY_OWNER_MASK; 2590 value |= SOR_STATE_ASY_OWNER(1 + dc->pipe); 2591 tegra_sor_writel(sor, value, SOR_STATE1); 2592 2593 err = tegra_sor_power_up(sor, 250); 2594 if (err < 0) 2595 dev_err(sor->dev, "failed to power up SOR: %d\n", err); 2596 2597 /* configure dynamic range of output */ 2598 value = tegra_sor_readl(sor, sor->soc->regs->head_state0 + dc->pipe); 2599 value &= ~SOR_HEAD_STATE_RANGECOMPRESS_MASK; 2600 value &= ~SOR_HEAD_STATE_DYNRANGE_MASK; 2601 tegra_sor_writel(sor, value, sor->soc->regs->head_state0 + dc->pipe); 2602 2603 /* configure colorspace */ 2604 value = tegra_sor_readl(sor, sor->soc->regs->head_state0 + dc->pipe); 2605 value &= ~SOR_HEAD_STATE_COLORSPACE_MASK; 2606 value |= SOR_HEAD_STATE_COLORSPACE_RGB; 2607 tegra_sor_writel(sor, value, sor->soc->regs->head_state0 + dc->pipe); 2608 2609 tegra_sor_mode_set(sor, mode, state); 2610 2611 tegra_sor_update(sor); 2612 2613 /* program preamble timing in SOR (XXX) */ 2614 value = tegra_sor_readl(sor, SOR_DP_SPARE0); 2615 value &= ~SOR_DP_SPARE_DISP_VIDEO_PREAMBLE; 2616 tegra_sor_writel(sor, value, SOR_DP_SPARE0); 2617 2618 err = tegra_sor_attach(sor); 2619 if (err < 0) 2620 dev_err(sor->dev, "failed to attach SOR: %d\n", err); 2621 2622 /* enable display to SOR clock and generate HDMI preamble */ 2623 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); 2624 2625 if (!sor->soc->has_nvdisplay) 2626 value |= SOR1_TIMING_CYA; 2627 2628 value |= SOR_ENABLE(sor->index); 2629 2630 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); 2631 2632 if (dc->soc->has_nvdisplay) { 2633 value = tegra_dc_readl(dc, DC_DISP_CORE_SOR_SET_CONTROL(sor->index)); 2634 value &= ~PROTOCOL_MASK; 2635 value |= PROTOCOL_SINGLE_TMDS_A; 2636 tegra_dc_writel(dc, value, DC_DISP_CORE_SOR_SET_CONTROL(sor->index)); 2637 } 2638 2639 tegra_dc_commit(dc); 2640 2641 err = tegra_sor_wakeup(sor); 2642 if (err < 0) 2643 dev_err(sor->dev, "failed to wakeup SOR: %d\n", err); 2644 2645 tegra_sor_hdmi_scdc_start(sor); 2646 tegra_sor_audio_prepare(sor); 2647 } 2648 2649 static const struct drm_encoder_helper_funcs tegra_sor_hdmi_helpers = { 2650 .disable = tegra_sor_hdmi_disable, 2651 .enable = tegra_sor_hdmi_enable, 2652 .atomic_check = tegra_sor_encoder_atomic_check, 2653 }; 2654 2655 static void tegra_sor_dp_disable(struct drm_encoder *encoder) 2656 { 2657 struct tegra_output *output = encoder_to_output(encoder); 2658 struct tegra_dc *dc = to_tegra_dc(encoder->crtc); 2659 struct tegra_sor *sor = to_sor(output); 2660 u32 value; 2661 int err; 2662 2663 if (output->panel) 2664 drm_panel_disable(output->panel); 2665 2666 /* 2667 * Do not attempt to power down a DP link if we're not connected since 2668 * the AUX transactions would just be timing out. 2669 */ 2670 if (output->connector.status != connector_status_disconnected) { 2671 err = drm_dp_link_power_down(sor->aux, &sor->link); 2672 if (err < 0) 2673 dev_err(sor->dev, "failed to power down link: %d\n", 2674 err); 2675 } 2676 2677 err = tegra_sor_detach(sor); 2678 if (err < 0) 2679 dev_err(sor->dev, "failed to detach SOR: %d\n", err); 2680 2681 tegra_sor_writel(sor, 0, SOR_STATE1); 2682 tegra_sor_update(sor); 2683 2684 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); 2685 value &= ~SOR_ENABLE(sor->index); 2686 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); 2687 tegra_dc_commit(dc); 2688 2689 value = tegra_sor_readl(sor, SOR_STATE1); 2690 value &= ~SOR_STATE_ASY_PROTOCOL_MASK; 2691 value &= ~SOR_STATE_ASY_SUBOWNER_MASK; 2692 value &= ~SOR_STATE_ASY_OWNER_MASK; 2693 tegra_sor_writel(sor, value, SOR_STATE1); 2694 tegra_sor_update(sor); 2695 2696 /* switch to safe parent clock */ 2697 err = tegra_sor_set_parent_clock(sor, sor->clk_safe); 2698 if (err < 0) 2699 dev_err(sor->dev, "failed to set safe clock: %d\n", err); 2700 2701 err = tegra_sor_power_down(sor); 2702 if (err < 0) 2703 dev_err(sor->dev, "failed to power down SOR: %d\n", err); 2704 2705 err = tegra_io_pad_power_disable(sor->pad); 2706 if (err < 0) 2707 dev_err(sor->dev, "failed to power off I/O pad: %d\n", err); 2708 2709 err = drm_dp_aux_disable(sor->aux); 2710 if (err < 0) 2711 dev_err(sor->dev, "failed disable DPAUX: %d\n", err); 2712 2713 if (output->panel) 2714 drm_panel_unprepare(output->panel); 2715 2716 host1x_client_suspend(&sor->client); 2717 } 2718 2719 static void tegra_sor_dp_enable(struct drm_encoder *encoder) 2720 { 2721 struct tegra_output *output = encoder_to_output(encoder); 2722 struct tegra_dc *dc = to_tegra_dc(encoder->crtc); 2723 struct tegra_sor *sor = to_sor(output); 2724 struct tegra_sor_config config; 2725 struct tegra_sor_state *state; 2726 struct drm_display_mode *mode; 2727 struct drm_display_info *info; 2728 unsigned int i; 2729 u32 value; 2730 int err; 2731 2732 state = to_sor_state(output->connector.state); 2733 mode = &encoder->crtc->state->adjusted_mode; 2734 info = &output->connector.display_info; 2735 2736 err = host1x_client_resume(&sor->client); 2737 if (err < 0) { 2738 dev_err(sor->dev, "failed to resume: %d\n", err); 2739 return; 2740 } 2741 2742 /* switch to safe parent clock */ 2743 err = tegra_sor_set_parent_clock(sor, sor->clk_safe); 2744 if (err < 0) 2745 dev_err(sor->dev, "failed to set safe parent clock: %d\n", err); 2746 2747 err = tegra_io_pad_power_enable(sor->pad); 2748 if (err < 0) 2749 dev_err(sor->dev, "failed to power on LVDS rail: %d\n", err); 2750 2751 usleep_range(20, 100); 2752 2753 err = drm_dp_aux_enable(sor->aux); 2754 if (err < 0) 2755 dev_err(sor->dev, "failed to enable DPAUX: %d\n", err); 2756 2757 err = drm_dp_link_probe(sor->aux, &sor->link); 2758 if (err < 0) 2759 dev_err(sor->dev, "failed to probe DP link: %d\n", err); 2760 2761 tegra_sor_filter_rates(sor); 2762 2763 err = drm_dp_link_choose(&sor->link, mode, info); 2764 if (err < 0) 2765 dev_err(sor->dev, "failed to choose link: %d\n", err); 2766 2767 if (output->panel) 2768 drm_panel_prepare(output->panel); 2769 2770 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2771 value &= ~SOR_PLL2_BANDGAP_POWERDOWN; 2772 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2773 2774 usleep_range(20, 40); 2775 2776 value = tegra_sor_readl(sor, sor->soc->regs->pll3); 2777 value |= SOR_PLL3_PLL_VDD_MODE_3V3; 2778 tegra_sor_writel(sor, value, sor->soc->regs->pll3); 2779 2780 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 2781 value &= ~(SOR_PLL0_VCOPD | SOR_PLL0_PWR); 2782 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 2783 2784 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2785 value &= ~SOR_PLL2_SEQ_PLLCAPPD_ENFORCE; 2786 value |= SOR_PLL2_SEQ_PLLCAPPD; 2787 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2788 2789 usleep_range(200, 400); 2790 2791 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2792 value &= ~SOR_PLL2_POWERDOWN_OVERRIDE; 2793 value &= ~SOR_PLL2_PORT_POWERDOWN; 2794 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2795 2796 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 2797 value &= ~SOR_CLK_CNTRL_DP_CLK_SEL_MASK; 2798 2799 if (output->panel) 2800 value |= SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK; 2801 else 2802 value |= SOR_CLK_CNTRL_DP_CLK_SEL_DIFF_DPCLK; 2803 2804 tegra_sor_writel(sor, value, SOR_CLK_CNTRL); 2805 2806 usleep_range(200, 400); 2807 2808 value = tegra_sor_readl(sor, SOR_DP_SPARE0); 2809 /* XXX not in TRM */ 2810 if (output->panel) 2811 value |= SOR_DP_SPARE_PANEL_INTERNAL; 2812 else 2813 value &= ~SOR_DP_SPARE_PANEL_INTERNAL; 2814 2815 value |= SOR_DP_SPARE_SEQ_ENABLE; 2816 tegra_sor_writel(sor, value, SOR_DP_SPARE0); 2817 2818 /* XXX not in TRM */ 2819 tegra_sor_writel(sor, 0, SOR_LVDS); 2820 2821 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 2822 value &= ~SOR_PLL0_ICHPMP_MASK; 2823 value &= ~SOR_PLL0_VCOCAP_MASK; 2824 value |= SOR_PLL0_ICHPMP(0x1); 2825 value |= SOR_PLL0_VCOCAP(0x3); 2826 value |= SOR_PLL0_RESISTOR_EXT; 2827 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 2828 2829 /* XXX not in TRM */ 2830 for (value = 0, i = 0; i < 5; i++) 2831 value |= SOR_XBAR_CTRL_LINK0_XSEL(i, sor->soc->xbar_cfg[i]) | 2832 SOR_XBAR_CTRL_LINK1_XSEL(i, i); 2833 2834 tegra_sor_writel(sor, 0x00000000, SOR_XBAR_POL); 2835 tegra_sor_writel(sor, value, SOR_XBAR_CTRL); 2836 2837 /* 2838 * Switch the pad clock to the DP clock. Note that we cannot actually 2839 * do this because Tegra186 and later don't support clk_set_parent() 2840 * on the sorX_pad_clkout clocks. We already do the equivalent above 2841 * using the DP_CLK_SEL mux of the SOR_CLK_CNTRL register. 2842 */ 2843 #if 0 2844 err = clk_set_parent(sor->clk_pad, sor->clk_parent); 2845 if (err < 0) { 2846 dev_err(sor->dev, "failed to select pad parent clock: %d\n", 2847 err); 2848 return; 2849 } 2850 #endif 2851 2852 /* switch the SOR clock to the pad clock */ 2853 err = tegra_sor_set_parent_clock(sor, sor->clk_pad); 2854 if (err < 0) { 2855 dev_err(sor->dev, "failed to select SOR parent clock: %d\n", 2856 err); 2857 return; 2858 } 2859 2860 /* switch the output clock to the parent pixel clock */ 2861 err = clk_set_parent(sor->clk, sor->clk_parent); 2862 if (err < 0) { 2863 dev_err(sor->dev, "failed to select output parent clock: %d\n", 2864 err); 2865 return; 2866 } 2867 2868 /* use DP-A protocol */ 2869 value = tegra_sor_readl(sor, SOR_STATE1); 2870 value &= ~SOR_STATE_ASY_PROTOCOL_MASK; 2871 value |= SOR_STATE_ASY_PROTOCOL_DP_A; 2872 tegra_sor_writel(sor, value, SOR_STATE1); 2873 2874 /* enable port */ 2875 value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); 2876 value |= SOR_DP_LINKCTL_ENABLE; 2877 tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); 2878 2879 tegra_sor_dp_term_calibrate(sor); 2880 2881 err = drm_dp_link_train(&sor->link); 2882 if (err < 0) 2883 dev_err(sor->dev, "link training failed: %d\n", err); 2884 else 2885 dev_dbg(sor->dev, "link training succeeded\n"); 2886 2887 err = drm_dp_link_power_up(sor->aux, &sor->link); 2888 if (err < 0) 2889 dev_err(sor->dev, "failed to power up DP link: %d\n", err); 2890 2891 /* compute configuration */ 2892 memset(&config, 0, sizeof(config)); 2893 config.bits_per_pixel = state->bpc * 3; 2894 2895 err = tegra_sor_compute_config(sor, mode, &config, &sor->link); 2896 if (err < 0) 2897 dev_err(sor->dev, "failed to compute configuration: %d\n", err); 2898 2899 tegra_sor_apply_config(sor, &config); 2900 tegra_sor_mode_set(sor, mode, state); 2901 2902 if (output->panel) { 2903 /* CSTM (LVDS, link A/B, upper) */ 2904 value = SOR_CSTM_LVDS | SOR_CSTM_LINK_ACT_A | SOR_CSTM_LINK_ACT_B | 2905 SOR_CSTM_UPPER; 2906 tegra_sor_writel(sor, value, SOR_CSTM); 2907 2908 /* PWM setup */ 2909 err = tegra_sor_setup_pwm(sor, 250); 2910 if (err < 0) 2911 dev_err(sor->dev, "failed to setup PWM: %d\n", err); 2912 } 2913 2914 tegra_sor_update(sor); 2915 2916 err = tegra_sor_power_up(sor, 250); 2917 if (err < 0) 2918 dev_err(sor->dev, "failed to power up SOR: %d\n", err); 2919 2920 /* attach and wake up */ 2921 err = tegra_sor_attach(sor); 2922 if (err < 0) 2923 dev_err(sor->dev, "failed to attach SOR: %d\n", err); 2924 2925 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); 2926 value |= SOR_ENABLE(sor->index); 2927 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); 2928 2929 tegra_dc_commit(dc); 2930 2931 err = tegra_sor_wakeup(sor); 2932 if (err < 0) 2933 dev_err(sor->dev, "failed to wakeup SOR: %d\n", err); 2934 2935 if (output->panel) 2936 drm_panel_enable(output->panel); 2937 } 2938 2939 static const struct drm_encoder_helper_funcs tegra_sor_dp_helpers = { 2940 .disable = tegra_sor_dp_disable, 2941 .enable = tegra_sor_dp_enable, 2942 .atomic_check = tegra_sor_encoder_atomic_check, 2943 }; 2944 2945 static int tegra_sor_hdmi_probe(struct tegra_sor *sor) 2946 { 2947 int err; 2948 2949 sor->avdd_io_supply = devm_regulator_get(sor->dev, "avdd-io"); 2950 if (IS_ERR(sor->avdd_io_supply)) { 2951 dev_err(sor->dev, "cannot get AVDD I/O supply: %ld\n", 2952 PTR_ERR(sor->avdd_io_supply)); 2953 return PTR_ERR(sor->avdd_io_supply); 2954 } 2955 2956 err = regulator_enable(sor->avdd_io_supply); 2957 if (err < 0) { 2958 dev_err(sor->dev, "failed to enable AVDD I/O supply: %d\n", 2959 err); 2960 return err; 2961 } 2962 2963 sor->vdd_pll_supply = devm_regulator_get(sor->dev, "vdd-pll"); 2964 if (IS_ERR(sor->vdd_pll_supply)) { 2965 dev_err(sor->dev, "cannot get VDD PLL supply: %ld\n", 2966 PTR_ERR(sor->vdd_pll_supply)); 2967 return PTR_ERR(sor->vdd_pll_supply); 2968 } 2969 2970 err = regulator_enable(sor->vdd_pll_supply); 2971 if (err < 0) { 2972 dev_err(sor->dev, "failed to enable VDD PLL supply: %d\n", 2973 err); 2974 return err; 2975 } 2976 2977 sor->hdmi_supply = devm_regulator_get(sor->dev, "hdmi"); 2978 if (IS_ERR(sor->hdmi_supply)) { 2979 dev_err(sor->dev, "cannot get HDMI supply: %ld\n", 2980 PTR_ERR(sor->hdmi_supply)); 2981 return PTR_ERR(sor->hdmi_supply); 2982 } 2983 2984 err = regulator_enable(sor->hdmi_supply); 2985 if (err < 0) { 2986 dev_err(sor->dev, "failed to enable HDMI supply: %d\n", err); 2987 return err; 2988 } 2989 2990 INIT_DELAYED_WORK(&sor->scdc, tegra_sor_hdmi_scdc_work); 2991 2992 return 0; 2993 } 2994 2995 static int tegra_sor_hdmi_remove(struct tegra_sor *sor) 2996 { 2997 regulator_disable(sor->hdmi_supply); 2998 regulator_disable(sor->vdd_pll_supply); 2999 regulator_disable(sor->avdd_io_supply); 3000 3001 return 0; 3002 } 3003 3004 static const struct tegra_sor_ops tegra_sor_hdmi_ops = { 3005 .name = "HDMI", 3006 .probe = tegra_sor_hdmi_probe, 3007 .remove = tegra_sor_hdmi_remove, 3008 .audio_enable = tegra_sor_hdmi_audio_enable, 3009 .audio_disable = tegra_sor_hdmi_audio_disable, 3010 }; 3011 3012 static int tegra_sor_dp_probe(struct tegra_sor *sor) 3013 { 3014 int err; 3015 3016 sor->avdd_io_supply = devm_regulator_get(sor->dev, "avdd-io-hdmi-dp"); 3017 if (IS_ERR(sor->avdd_io_supply)) 3018 return PTR_ERR(sor->avdd_io_supply); 3019 3020 err = regulator_enable(sor->avdd_io_supply); 3021 if (err < 0) 3022 return err; 3023 3024 sor->vdd_pll_supply = devm_regulator_get(sor->dev, "vdd-hdmi-dp-pll"); 3025 if (IS_ERR(sor->vdd_pll_supply)) 3026 return PTR_ERR(sor->vdd_pll_supply); 3027 3028 err = regulator_enable(sor->vdd_pll_supply); 3029 if (err < 0) 3030 return err; 3031 3032 return 0; 3033 } 3034 3035 static int tegra_sor_dp_remove(struct tegra_sor *sor) 3036 { 3037 regulator_disable(sor->vdd_pll_supply); 3038 regulator_disable(sor->avdd_io_supply); 3039 3040 return 0; 3041 } 3042 3043 static const struct tegra_sor_ops tegra_sor_dp_ops = { 3044 .name = "DP", 3045 .probe = tegra_sor_dp_probe, 3046 .remove = tegra_sor_dp_remove, 3047 }; 3048 3049 static int tegra_sor_init(struct host1x_client *client) 3050 { 3051 struct drm_device *drm = dev_get_drvdata(client->host); 3052 const struct drm_encoder_helper_funcs *helpers = NULL; 3053 struct tegra_sor *sor = host1x_client_to_sor(client); 3054 int connector = DRM_MODE_CONNECTOR_Unknown; 3055 int encoder = DRM_MODE_ENCODER_NONE; 3056 int err; 3057 3058 if (!sor->aux) { 3059 if (sor->ops == &tegra_sor_hdmi_ops) { 3060 connector = DRM_MODE_CONNECTOR_HDMIA; 3061 encoder = DRM_MODE_ENCODER_TMDS; 3062 helpers = &tegra_sor_hdmi_helpers; 3063 } else if (sor->soc->supports_lvds) { 3064 connector = DRM_MODE_CONNECTOR_LVDS; 3065 encoder = DRM_MODE_ENCODER_LVDS; 3066 } 3067 } else { 3068 if (sor->output.panel) { 3069 connector = DRM_MODE_CONNECTOR_eDP; 3070 encoder = DRM_MODE_ENCODER_TMDS; 3071 helpers = &tegra_sor_dp_helpers; 3072 } else { 3073 connector = DRM_MODE_CONNECTOR_DisplayPort; 3074 encoder = DRM_MODE_ENCODER_TMDS; 3075 helpers = &tegra_sor_dp_helpers; 3076 } 3077 3078 sor->link.ops = &tegra_sor_dp_link_ops; 3079 sor->link.aux = sor->aux; 3080 } 3081 3082 sor->output.dev = sor->dev; 3083 3084 drm_connector_init_with_ddc(drm, &sor->output.connector, 3085 &tegra_sor_connector_funcs, 3086 connector, 3087 sor->output.ddc); 3088 drm_connector_helper_add(&sor->output.connector, 3089 &tegra_sor_connector_helper_funcs); 3090 sor->output.connector.dpms = DRM_MODE_DPMS_OFF; 3091 3092 drm_simple_encoder_init(drm, &sor->output.encoder, encoder); 3093 drm_encoder_helper_add(&sor->output.encoder, helpers); 3094 3095 drm_connector_attach_encoder(&sor->output.connector, 3096 &sor->output.encoder); 3097 drm_connector_register(&sor->output.connector); 3098 3099 err = tegra_output_init(drm, &sor->output); 3100 if (err < 0) { 3101 dev_err(client->dev, "failed to initialize output: %d\n", err); 3102 return err; 3103 } 3104 3105 tegra_output_find_possible_crtcs(&sor->output, drm); 3106 3107 if (sor->aux) { 3108 err = drm_dp_aux_attach(sor->aux, &sor->output); 3109 if (err < 0) { 3110 dev_err(sor->dev, "failed to attach DP: %d\n", err); 3111 return err; 3112 } 3113 } 3114 3115 /* 3116 * XXX: Remove this reset once proper hand-over from firmware to 3117 * kernel is possible. 3118 */ 3119 if (sor->rst) { 3120 err = reset_control_acquire(sor->rst); 3121 if (err < 0) { 3122 dev_err(sor->dev, "failed to acquire SOR reset: %d\n", 3123 err); 3124 return err; 3125 } 3126 3127 err = reset_control_assert(sor->rst); 3128 if (err < 0) { 3129 dev_err(sor->dev, "failed to assert SOR reset: %d\n", 3130 err); 3131 return err; 3132 } 3133 } 3134 3135 err = clk_prepare_enable(sor->clk); 3136 if (err < 0) { 3137 dev_err(sor->dev, "failed to enable clock: %d\n", err); 3138 return err; 3139 } 3140 3141 usleep_range(1000, 3000); 3142 3143 if (sor->rst) { 3144 err = reset_control_deassert(sor->rst); 3145 if (err < 0) { 3146 dev_err(sor->dev, "failed to deassert SOR reset: %d\n", 3147 err); 3148 return err; 3149 } 3150 3151 reset_control_release(sor->rst); 3152 } 3153 3154 err = clk_prepare_enable(sor->clk_safe); 3155 if (err < 0) 3156 return err; 3157 3158 err = clk_prepare_enable(sor->clk_dp); 3159 if (err < 0) 3160 return err; 3161 3162 return 0; 3163 } 3164 3165 static int tegra_sor_exit(struct host1x_client *client) 3166 { 3167 struct tegra_sor *sor = host1x_client_to_sor(client); 3168 int err; 3169 3170 tegra_output_exit(&sor->output); 3171 3172 if (sor->aux) { 3173 err = drm_dp_aux_detach(sor->aux); 3174 if (err < 0) { 3175 dev_err(sor->dev, "failed to detach DP: %d\n", err); 3176 return err; 3177 } 3178 } 3179 3180 clk_disable_unprepare(sor->clk_safe); 3181 clk_disable_unprepare(sor->clk_dp); 3182 clk_disable_unprepare(sor->clk); 3183 3184 return 0; 3185 } 3186 3187 static int tegra_sor_runtime_suspend(struct host1x_client *client) 3188 { 3189 struct tegra_sor *sor = host1x_client_to_sor(client); 3190 struct device *dev = client->dev; 3191 int err; 3192 3193 if (sor->rst) { 3194 err = reset_control_assert(sor->rst); 3195 if (err < 0) { 3196 dev_err(dev, "failed to assert reset: %d\n", err); 3197 return err; 3198 } 3199 3200 reset_control_release(sor->rst); 3201 } 3202 3203 usleep_range(1000, 2000); 3204 3205 clk_disable_unprepare(sor->clk); 3206 pm_runtime_put_sync(dev); 3207 3208 return 0; 3209 } 3210 3211 static int tegra_sor_runtime_resume(struct host1x_client *client) 3212 { 3213 struct tegra_sor *sor = host1x_client_to_sor(client); 3214 struct device *dev = client->dev; 3215 int err; 3216 3217 err = pm_runtime_get_sync(dev); 3218 if (err < 0) { 3219 dev_err(dev, "failed to get runtime PM: %d\n", err); 3220 return err; 3221 } 3222 3223 err = clk_prepare_enable(sor->clk); 3224 if (err < 0) { 3225 dev_err(dev, "failed to enable clock: %d\n", err); 3226 goto put_rpm; 3227 } 3228 3229 usleep_range(1000, 2000); 3230 3231 if (sor->rst) { 3232 err = reset_control_acquire(sor->rst); 3233 if (err < 0) { 3234 dev_err(dev, "failed to acquire reset: %d\n", err); 3235 goto disable_clk; 3236 } 3237 3238 err = reset_control_deassert(sor->rst); 3239 if (err < 0) { 3240 dev_err(dev, "failed to deassert reset: %d\n", err); 3241 goto release_reset; 3242 } 3243 } 3244 3245 return 0; 3246 3247 release_reset: 3248 reset_control_release(sor->rst); 3249 disable_clk: 3250 clk_disable_unprepare(sor->clk); 3251 put_rpm: 3252 pm_runtime_put_sync(dev); 3253 return err; 3254 } 3255 3256 static const struct host1x_client_ops sor_client_ops = { 3257 .init = tegra_sor_init, 3258 .exit = tegra_sor_exit, 3259 .suspend = tegra_sor_runtime_suspend, 3260 .resume = tegra_sor_runtime_resume, 3261 }; 3262 3263 static const u8 tegra124_sor_xbar_cfg[5] = { 3264 0, 1, 2, 3, 4 3265 }; 3266 3267 static const struct tegra_sor_regs tegra124_sor_regs = { 3268 .head_state0 = 0x05, 3269 .head_state1 = 0x07, 3270 .head_state2 = 0x09, 3271 .head_state3 = 0x0b, 3272 .head_state4 = 0x0d, 3273 .head_state5 = 0x0f, 3274 .pll0 = 0x17, 3275 .pll1 = 0x18, 3276 .pll2 = 0x19, 3277 .pll3 = 0x1a, 3278 .dp_padctl0 = 0x5c, 3279 .dp_padctl2 = 0x73, 3280 }; 3281 3282 /* Tegra124 and Tegra132 have lanes 0 and 2 swapped. */ 3283 static const u8 tegra124_sor_lane_map[4] = { 3284 2, 1, 0, 3, 3285 }; 3286 3287 static const u8 tegra124_sor_voltage_swing[4][4][4] = { 3288 { 3289 { 0x13, 0x19, 0x1e, 0x28 }, 3290 { 0x1e, 0x25, 0x2d, }, 3291 { 0x28, 0x32, }, 3292 { 0x3c, }, 3293 }, { 3294 { 0x12, 0x17, 0x1b, 0x25 }, 3295 { 0x1c, 0x23, 0x2a, }, 3296 { 0x25, 0x2f, }, 3297 { 0x39, } 3298 }, { 3299 { 0x12, 0x16, 0x1a, 0x22 }, 3300 { 0x1b, 0x20, 0x27, }, 3301 { 0x24, 0x2d, }, 3302 { 0x36, }, 3303 }, { 3304 { 0x11, 0x14, 0x17, 0x1f }, 3305 { 0x19, 0x1e, 0x24, }, 3306 { 0x22, 0x2a, }, 3307 { 0x32, }, 3308 }, 3309 }; 3310 3311 static const u8 tegra124_sor_pre_emphasis[4][4][4] = { 3312 { 3313 { 0x00, 0x09, 0x13, 0x25 }, 3314 { 0x00, 0x0f, 0x1e, }, 3315 { 0x00, 0x14, }, 3316 { 0x00, }, 3317 }, { 3318 { 0x00, 0x0a, 0x14, 0x28 }, 3319 { 0x00, 0x0f, 0x1e, }, 3320 { 0x00, 0x14, }, 3321 { 0x00 }, 3322 }, { 3323 { 0x00, 0x0a, 0x14, 0x28 }, 3324 { 0x00, 0x0f, 0x1e, }, 3325 { 0x00, 0x14, }, 3326 { 0x00, }, 3327 }, { 3328 { 0x00, 0x0a, 0x14, 0x28 }, 3329 { 0x00, 0x0f, 0x1e, }, 3330 { 0x00, 0x14, }, 3331 { 0x00, }, 3332 }, 3333 }; 3334 3335 static const u8 tegra124_sor_post_cursor[4][4][4] = { 3336 { 3337 { 0x00, 0x00, 0x00, 0x00 }, 3338 { 0x00, 0x00, 0x00, }, 3339 { 0x00, 0x00, }, 3340 { 0x00, }, 3341 }, { 3342 { 0x02, 0x02, 0x04, 0x05 }, 3343 { 0x02, 0x04, 0x05, }, 3344 { 0x04, 0x05, }, 3345 { 0x05, }, 3346 }, { 3347 { 0x04, 0x05, 0x08, 0x0b }, 3348 { 0x05, 0x09, 0x0b, }, 3349 { 0x08, 0x0a, }, 3350 { 0x0b, }, 3351 }, { 3352 { 0x05, 0x09, 0x0b, 0x12 }, 3353 { 0x09, 0x0d, 0x12, }, 3354 { 0x0b, 0x0f, }, 3355 { 0x12, }, 3356 }, 3357 }; 3358 3359 static const u8 tegra124_sor_tx_pu[4][4][4] = { 3360 { 3361 { 0x20, 0x30, 0x40, 0x60 }, 3362 { 0x30, 0x40, 0x60, }, 3363 { 0x40, 0x60, }, 3364 { 0x60, }, 3365 }, { 3366 { 0x20, 0x20, 0x30, 0x50 }, 3367 { 0x30, 0x40, 0x50, }, 3368 { 0x40, 0x50, }, 3369 { 0x60, }, 3370 }, { 3371 { 0x20, 0x20, 0x30, 0x40, }, 3372 { 0x30, 0x30, 0x40, }, 3373 { 0x40, 0x50, }, 3374 { 0x60, }, 3375 }, { 3376 { 0x20, 0x20, 0x20, 0x40, }, 3377 { 0x30, 0x30, 0x40, }, 3378 { 0x40, 0x40, }, 3379 { 0x60, }, 3380 }, 3381 }; 3382 3383 static const struct tegra_sor_soc tegra124_sor = { 3384 .supports_lvds = true, 3385 .supports_hdmi = false, 3386 .supports_dp = true, 3387 .supports_audio = false, 3388 .supports_hdcp = false, 3389 .regs = &tegra124_sor_regs, 3390 .has_nvdisplay = false, 3391 .xbar_cfg = tegra124_sor_xbar_cfg, 3392 .lane_map = tegra124_sor_lane_map, 3393 .voltage_swing = tegra124_sor_voltage_swing, 3394 .pre_emphasis = tegra124_sor_pre_emphasis, 3395 .post_cursor = tegra124_sor_post_cursor, 3396 .tx_pu = tegra124_sor_tx_pu, 3397 }; 3398 3399 static const u8 tegra132_sor_pre_emphasis[4][4][4] = { 3400 { 3401 { 0x00, 0x08, 0x12, 0x24 }, 3402 { 0x01, 0x0e, 0x1d, }, 3403 { 0x01, 0x13, }, 3404 { 0x00, }, 3405 }, { 3406 { 0x00, 0x08, 0x12, 0x24 }, 3407 { 0x00, 0x0e, 0x1d, }, 3408 { 0x00, 0x13, }, 3409 { 0x00 }, 3410 }, { 3411 { 0x00, 0x08, 0x12, 0x24 }, 3412 { 0x00, 0x0e, 0x1d, }, 3413 { 0x00, 0x13, }, 3414 { 0x00, }, 3415 }, { 3416 { 0x00, 0x08, 0x12, 0x24 }, 3417 { 0x00, 0x0e, 0x1d, }, 3418 { 0x00, 0x13, }, 3419 { 0x00, }, 3420 }, 3421 }; 3422 3423 static const struct tegra_sor_soc tegra132_sor = { 3424 .supports_lvds = true, 3425 .supports_hdmi = false, 3426 .supports_dp = true, 3427 .supports_audio = false, 3428 .supports_hdcp = false, 3429 .regs = &tegra124_sor_regs, 3430 .has_nvdisplay = false, 3431 .xbar_cfg = tegra124_sor_xbar_cfg, 3432 .lane_map = tegra124_sor_lane_map, 3433 .voltage_swing = tegra124_sor_voltage_swing, 3434 .pre_emphasis = tegra132_sor_pre_emphasis, 3435 .post_cursor = tegra124_sor_post_cursor, 3436 .tx_pu = tegra124_sor_tx_pu, 3437 }; 3438 3439 static const struct tegra_sor_regs tegra210_sor_regs = { 3440 .head_state0 = 0x05, 3441 .head_state1 = 0x07, 3442 .head_state2 = 0x09, 3443 .head_state3 = 0x0b, 3444 .head_state4 = 0x0d, 3445 .head_state5 = 0x0f, 3446 .pll0 = 0x17, 3447 .pll1 = 0x18, 3448 .pll2 = 0x19, 3449 .pll3 = 0x1a, 3450 .dp_padctl0 = 0x5c, 3451 .dp_padctl2 = 0x73, 3452 }; 3453 3454 static const u8 tegra210_sor_xbar_cfg[5] = { 3455 2, 1, 0, 3, 4 3456 }; 3457 3458 static const u8 tegra210_sor_lane_map[4] = { 3459 0, 1, 2, 3, 3460 }; 3461 3462 static const struct tegra_sor_soc tegra210_sor = { 3463 .supports_lvds = false, 3464 .supports_hdmi = false, 3465 .supports_dp = true, 3466 .supports_audio = false, 3467 .supports_hdcp = false, 3468 3469 .regs = &tegra210_sor_regs, 3470 .has_nvdisplay = false, 3471 3472 .xbar_cfg = tegra210_sor_xbar_cfg, 3473 .lane_map = tegra210_sor_lane_map, 3474 .voltage_swing = tegra124_sor_voltage_swing, 3475 .pre_emphasis = tegra124_sor_pre_emphasis, 3476 .post_cursor = tegra124_sor_post_cursor, 3477 .tx_pu = tegra124_sor_tx_pu, 3478 }; 3479 3480 static const struct tegra_sor_soc tegra210_sor1 = { 3481 .supports_lvds = false, 3482 .supports_hdmi = true, 3483 .supports_dp = true, 3484 .supports_audio = true, 3485 .supports_hdcp = true, 3486 3487 .regs = &tegra210_sor_regs, 3488 .has_nvdisplay = false, 3489 3490 .num_settings = ARRAY_SIZE(tegra210_sor_hdmi_defaults), 3491 .settings = tegra210_sor_hdmi_defaults, 3492 .xbar_cfg = tegra210_sor_xbar_cfg, 3493 .lane_map = tegra210_sor_lane_map, 3494 .voltage_swing = tegra124_sor_voltage_swing, 3495 .pre_emphasis = tegra124_sor_pre_emphasis, 3496 .post_cursor = tegra124_sor_post_cursor, 3497 .tx_pu = tegra124_sor_tx_pu, 3498 }; 3499 3500 static const struct tegra_sor_regs tegra186_sor_regs = { 3501 .head_state0 = 0x151, 3502 .head_state1 = 0x154, 3503 .head_state2 = 0x157, 3504 .head_state3 = 0x15a, 3505 .head_state4 = 0x15d, 3506 .head_state5 = 0x160, 3507 .pll0 = 0x163, 3508 .pll1 = 0x164, 3509 .pll2 = 0x165, 3510 .pll3 = 0x166, 3511 .dp_padctl0 = 0x168, 3512 .dp_padctl2 = 0x16a, 3513 }; 3514 3515 static const u8 tegra186_sor_voltage_swing[4][4][4] = { 3516 { 3517 { 0x13, 0x19, 0x1e, 0x28 }, 3518 { 0x1e, 0x25, 0x2d, }, 3519 { 0x28, 0x32, }, 3520 { 0x39, }, 3521 }, { 3522 { 0x12, 0x16, 0x1b, 0x25 }, 3523 { 0x1c, 0x23, 0x2a, }, 3524 { 0x25, 0x2f, }, 3525 { 0x37, } 3526 }, { 3527 { 0x12, 0x16, 0x1a, 0x22 }, 3528 { 0x1b, 0x20, 0x27, }, 3529 { 0x24, 0x2d, }, 3530 { 0x35, }, 3531 }, { 3532 { 0x11, 0x14, 0x17, 0x1f }, 3533 { 0x19, 0x1e, 0x24, }, 3534 { 0x22, 0x2a, }, 3535 { 0x32, }, 3536 }, 3537 }; 3538 3539 static const u8 tegra186_sor_pre_emphasis[4][4][4] = { 3540 { 3541 { 0x00, 0x08, 0x12, 0x24 }, 3542 { 0x01, 0x0e, 0x1d, }, 3543 { 0x01, 0x13, }, 3544 { 0x00, }, 3545 }, { 3546 { 0x00, 0x08, 0x12, 0x24 }, 3547 { 0x00, 0x0e, 0x1d, }, 3548 { 0x00, 0x13, }, 3549 { 0x00 }, 3550 }, { 3551 { 0x00, 0x08, 0x14, 0x24 }, 3552 { 0x00, 0x0e, 0x1d, }, 3553 { 0x00, 0x13, }, 3554 { 0x00, }, 3555 }, { 3556 { 0x00, 0x08, 0x12, 0x24 }, 3557 { 0x00, 0x0e, 0x1d, }, 3558 { 0x00, 0x13, }, 3559 { 0x00, }, 3560 }, 3561 }; 3562 3563 static const struct tegra_sor_soc tegra186_sor = { 3564 .supports_lvds = false, 3565 .supports_hdmi = true, 3566 .supports_dp = true, 3567 .supports_audio = true, 3568 .supports_hdcp = true, 3569 3570 .regs = &tegra186_sor_regs, 3571 .has_nvdisplay = true, 3572 3573 .num_settings = ARRAY_SIZE(tegra186_sor_hdmi_defaults), 3574 .settings = tegra186_sor_hdmi_defaults, 3575 .xbar_cfg = tegra124_sor_xbar_cfg, 3576 .lane_map = tegra124_sor_lane_map, 3577 .voltage_swing = tegra186_sor_voltage_swing, 3578 .pre_emphasis = tegra186_sor_pre_emphasis, 3579 .post_cursor = tegra124_sor_post_cursor, 3580 .tx_pu = tegra124_sor_tx_pu, 3581 }; 3582 3583 static const struct tegra_sor_regs tegra194_sor_regs = { 3584 .head_state0 = 0x151, 3585 .head_state1 = 0x155, 3586 .head_state2 = 0x159, 3587 .head_state3 = 0x15d, 3588 .head_state4 = 0x161, 3589 .head_state5 = 0x165, 3590 .pll0 = 0x169, 3591 .pll1 = 0x16a, 3592 .pll2 = 0x16b, 3593 .pll3 = 0x16c, 3594 .dp_padctl0 = 0x16e, 3595 .dp_padctl2 = 0x16f, 3596 }; 3597 3598 static const struct tegra_sor_soc tegra194_sor = { 3599 .supports_lvds = false, 3600 .supports_hdmi = true, 3601 .supports_dp = true, 3602 .supports_audio = true, 3603 .supports_hdcp = true, 3604 3605 .regs = &tegra194_sor_regs, 3606 .has_nvdisplay = true, 3607 3608 .num_settings = ARRAY_SIZE(tegra194_sor_hdmi_defaults), 3609 .settings = tegra194_sor_hdmi_defaults, 3610 3611 .xbar_cfg = tegra210_sor_xbar_cfg, 3612 .lane_map = tegra124_sor_lane_map, 3613 .voltage_swing = tegra186_sor_voltage_swing, 3614 .pre_emphasis = tegra186_sor_pre_emphasis, 3615 .post_cursor = tegra124_sor_post_cursor, 3616 .tx_pu = tegra124_sor_tx_pu, 3617 }; 3618 3619 static const struct of_device_id tegra_sor_of_match[] = { 3620 { .compatible = "nvidia,tegra194-sor", .data = &tegra194_sor }, 3621 { .compatible = "nvidia,tegra186-sor", .data = &tegra186_sor }, 3622 { .compatible = "nvidia,tegra210-sor1", .data = &tegra210_sor1 }, 3623 { .compatible = "nvidia,tegra210-sor", .data = &tegra210_sor }, 3624 { .compatible = "nvidia,tegra132-sor", .data = &tegra132_sor }, 3625 { .compatible = "nvidia,tegra124-sor", .data = &tegra124_sor }, 3626 { }, 3627 }; 3628 MODULE_DEVICE_TABLE(of, tegra_sor_of_match); 3629 3630 static int tegra_sor_parse_dt(struct tegra_sor *sor) 3631 { 3632 struct device_node *np = sor->dev->of_node; 3633 u32 xbar_cfg[5]; 3634 unsigned int i; 3635 u32 value; 3636 int err; 3637 3638 if (sor->soc->has_nvdisplay) { 3639 err = of_property_read_u32(np, "nvidia,interface", &value); 3640 if (err < 0) 3641 return err; 3642 3643 sor->index = value; 3644 3645 /* 3646 * override the default that we already set for Tegra210 and 3647 * earlier 3648 */ 3649 sor->pad = TEGRA_IO_PAD_HDMI_DP0 + sor->index; 3650 } else { 3651 if (!sor->soc->supports_audio) 3652 sor->index = 0; 3653 else 3654 sor->index = 1; 3655 } 3656 3657 err = of_property_read_u32_array(np, "nvidia,xbar-cfg", xbar_cfg, 5); 3658 if (err < 0) { 3659 /* fall back to default per-SoC XBAR configuration */ 3660 for (i = 0; i < 5; i++) 3661 sor->xbar_cfg[i] = sor->soc->xbar_cfg[i]; 3662 } else { 3663 /* copy cells to SOR XBAR configuration */ 3664 for (i = 0; i < 5; i++) 3665 sor->xbar_cfg[i] = xbar_cfg[i]; 3666 } 3667 3668 return 0; 3669 } 3670 3671 static irqreturn_t tegra_sor_irq(int irq, void *data) 3672 { 3673 struct tegra_sor *sor = data; 3674 u32 value; 3675 3676 value = tegra_sor_readl(sor, SOR_INT_STATUS); 3677 tegra_sor_writel(sor, value, SOR_INT_STATUS); 3678 3679 if (value & SOR_INT_CODEC_SCRATCH0) { 3680 value = tegra_sor_readl(sor, SOR_AUDIO_HDA_CODEC_SCRATCH0); 3681 3682 if (value & SOR_AUDIO_HDA_CODEC_SCRATCH0_VALID) { 3683 unsigned int format; 3684 3685 format = value & SOR_AUDIO_HDA_CODEC_SCRATCH0_FMT_MASK; 3686 3687 tegra_hda_parse_format(format, &sor->format); 3688 3689 if (sor->ops->audio_enable) 3690 sor->ops->audio_enable(sor); 3691 } else { 3692 if (sor->ops->audio_disable) 3693 sor->ops->audio_disable(sor); 3694 } 3695 } 3696 3697 return IRQ_HANDLED; 3698 } 3699 3700 static int tegra_sor_probe(struct platform_device *pdev) 3701 { 3702 struct device_node *np; 3703 struct tegra_sor *sor; 3704 struct resource *regs; 3705 int err; 3706 3707 sor = devm_kzalloc(&pdev->dev, sizeof(*sor), GFP_KERNEL); 3708 if (!sor) 3709 return -ENOMEM; 3710 3711 sor->soc = of_device_get_match_data(&pdev->dev); 3712 sor->output.dev = sor->dev = &pdev->dev; 3713 3714 sor->settings = devm_kmemdup(&pdev->dev, sor->soc->settings, 3715 sor->soc->num_settings * 3716 sizeof(*sor->settings), 3717 GFP_KERNEL); 3718 if (!sor->settings) 3719 return -ENOMEM; 3720 3721 sor->num_settings = sor->soc->num_settings; 3722 3723 np = of_parse_phandle(pdev->dev.of_node, "nvidia,dpaux", 0); 3724 if (np) { 3725 sor->aux = drm_dp_aux_find_by_of_node(np); 3726 of_node_put(np); 3727 3728 if (!sor->aux) 3729 return -EPROBE_DEFER; 3730 3731 sor->output.ddc = &sor->aux->ddc; 3732 } 3733 3734 if (!sor->aux) { 3735 if (sor->soc->supports_hdmi) { 3736 sor->ops = &tegra_sor_hdmi_ops; 3737 sor->pad = TEGRA_IO_PAD_HDMI; 3738 } else if (sor->soc->supports_lvds) { 3739 dev_err(&pdev->dev, "LVDS not supported yet\n"); 3740 return -ENODEV; 3741 } else { 3742 dev_err(&pdev->dev, "unknown (non-DP) support\n"); 3743 return -ENODEV; 3744 } 3745 } else { 3746 np = of_parse_phandle(pdev->dev.of_node, "nvidia,panel", 0); 3747 /* 3748 * No need to keep this around since we only use it as a check 3749 * to see if a panel is connected (eDP) or not (DP). 3750 */ 3751 of_node_put(np); 3752 3753 sor->ops = &tegra_sor_dp_ops; 3754 sor->pad = TEGRA_IO_PAD_LVDS; 3755 } 3756 3757 err = tegra_sor_parse_dt(sor); 3758 if (err < 0) 3759 return err; 3760 3761 err = tegra_output_probe(&sor->output); 3762 if (err < 0) { 3763 dev_err(&pdev->dev, "failed to probe output: %d\n", err); 3764 return err; 3765 } 3766 3767 if (sor->ops && sor->ops->probe) { 3768 err = sor->ops->probe(sor); 3769 if (err < 0) { 3770 dev_err(&pdev->dev, "failed to probe %s: %d\n", 3771 sor->ops->name, err); 3772 goto output; 3773 } 3774 } 3775 3776 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); 3777 sor->regs = devm_ioremap_resource(&pdev->dev, regs); 3778 if (IS_ERR(sor->regs)) { 3779 err = PTR_ERR(sor->regs); 3780 goto remove; 3781 } 3782 3783 err = platform_get_irq(pdev, 0); 3784 if (err < 0) { 3785 dev_err(&pdev->dev, "failed to get IRQ: %d\n", err); 3786 goto remove; 3787 } 3788 3789 sor->irq = err; 3790 3791 err = devm_request_irq(sor->dev, sor->irq, tegra_sor_irq, 0, 3792 dev_name(sor->dev), sor); 3793 if (err < 0) { 3794 dev_err(&pdev->dev, "failed to request IRQ: %d\n", err); 3795 goto remove; 3796 } 3797 3798 sor->rst = devm_reset_control_get_exclusive_released(&pdev->dev, "sor"); 3799 if (IS_ERR(sor->rst)) { 3800 err = PTR_ERR(sor->rst); 3801 3802 if (err != -EBUSY || WARN_ON(!pdev->dev.pm_domain)) { 3803 dev_err(&pdev->dev, "failed to get reset control: %d\n", 3804 err); 3805 goto remove; 3806 } 3807 3808 /* 3809 * At this point, the reset control is most likely being used 3810 * by the generic power domain implementation. With any luck 3811 * the power domain will have taken care of resetting the SOR 3812 * and we don't have to do anything. 3813 */ 3814 sor->rst = NULL; 3815 } 3816 3817 sor->clk = devm_clk_get(&pdev->dev, NULL); 3818 if (IS_ERR(sor->clk)) { 3819 err = PTR_ERR(sor->clk); 3820 dev_err(&pdev->dev, "failed to get module clock: %d\n", err); 3821 goto remove; 3822 } 3823 3824 if (sor->soc->supports_hdmi || sor->soc->supports_dp) { 3825 struct device_node *np = pdev->dev.of_node; 3826 const char *name; 3827 3828 /* 3829 * For backwards compatibility with Tegra210 device trees, 3830 * fall back to the old clock name "source" if the new "out" 3831 * clock is not available. 3832 */ 3833 if (of_property_match_string(np, "clock-names", "out") < 0) 3834 name = "source"; 3835 else 3836 name = "out"; 3837 3838 sor->clk_out = devm_clk_get(&pdev->dev, name); 3839 if (IS_ERR(sor->clk_out)) { 3840 err = PTR_ERR(sor->clk_out); 3841 dev_err(sor->dev, "failed to get %s clock: %d\n", 3842 name, err); 3843 goto remove; 3844 } 3845 } else { 3846 /* fall back to the module clock on SOR0 (eDP/LVDS only) */ 3847 sor->clk_out = sor->clk; 3848 } 3849 3850 sor->clk_parent = devm_clk_get(&pdev->dev, "parent"); 3851 if (IS_ERR(sor->clk_parent)) { 3852 err = PTR_ERR(sor->clk_parent); 3853 dev_err(&pdev->dev, "failed to get parent clock: %d\n", err); 3854 goto remove; 3855 } 3856 3857 sor->clk_safe = devm_clk_get(&pdev->dev, "safe"); 3858 if (IS_ERR(sor->clk_safe)) { 3859 err = PTR_ERR(sor->clk_safe); 3860 dev_err(&pdev->dev, "failed to get safe clock: %d\n", err); 3861 goto remove; 3862 } 3863 3864 sor->clk_dp = devm_clk_get(&pdev->dev, "dp"); 3865 if (IS_ERR(sor->clk_dp)) { 3866 err = PTR_ERR(sor->clk_dp); 3867 dev_err(&pdev->dev, "failed to get DP clock: %d\n", err); 3868 goto remove; 3869 } 3870 3871 /* 3872 * Starting with Tegra186, the BPMP provides an implementation for 3873 * the pad output clock, so we have to look it up from device tree. 3874 */ 3875 sor->clk_pad = devm_clk_get(&pdev->dev, "pad"); 3876 if (IS_ERR(sor->clk_pad)) { 3877 if (sor->clk_pad != ERR_PTR(-ENOENT)) { 3878 err = PTR_ERR(sor->clk_pad); 3879 goto remove; 3880 } 3881 3882 /* 3883 * If the pad output clock is not available, then we assume 3884 * we're on Tegra210 or earlier and have to provide our own 3885 * implementation. 3886 */ 3887 sor->clk_pad = NULL; 3888 } 3889 3890 /* 3891 * The bootloader may have set up the SOR such that it's module clock 3892 * is sourced by one of the display PLLs. However, that doesn't work 3893 * without properly having set up other bits of the SOR. 3894 */ 3895 err = clk_set_parent(sor->clk_out, sor->clk_safe); 3896 if (err < 0) { 3897 dev_err(&pdev->dev, "failed to use safe clock: %d\n", err); 3898 goto remove; 3899 } 3900 3901 platform_set_drvdata(pdev, sor); 3902 pm_runtime_enable(&pdev->dev); 3903 3904 INIT_LIST_HEAD(&sor->client.list); 3905 sor->client.ops = &sor_client_ops; 3906 sor->client.dev = &pdev->dev; 3907 3908 err = host1x_client_register(&sor->client); 3909 if (err < 0) { 3910 dev_err(&pdev->dev, "failed to register host1x client: %d\n", 3911 err); 3912 goto rpm_disable; 3913 } 3914 3915 /* 3916 * On Tegra210 and earlier, provide our own implementation for the 3917 * pad output clock. 3918 */ 3919 if (!sor->clk_pad) { 3920 char *name; 3921 3922 name = devm_kasprintf(sor->dev, GFP_KERNEL, "sor%u_pad_clkout", 3923 sor->index); 3924 if (!name) { 3925 err = -ENOMEM; 3926 goto unregister; 3927 } 3928 3929 err = host1x_client_resume(&sor->client); 3930 if (err < 0) { 3931 dev_err(sor->dev, "failed to resume: %d\n", err); 3932 goto unregister; 3933 } 3934 3935 sor->clk_pad = tegra_clk_sor_pad_register(sor, name); 3936 host1x_client_suspend(&sor->client); 3937 } 3938 3939 if (IS_ERR(sor->clk_pad)) { 3940 err = PTR_ERR(sor->clk_pad); 3941 dev_err(sor->dev, "failed to register SOR pad clock: %d\n", 3942 err); 3943 goto unregister; 3944 } 3945 3946 return 0; 3947 3948 unregister: 3949 host1x_client_unregister(&sor->client); 3950 rpm_disable: 3951 pm_runtime_disable(&pdev->dev); 3952 remove: 3953 if (sor->ops && sor->ops->remove) 3954 sor->ops->remove(sor); 3955 output: 3956 tegra_output_remove(&sor->output); 3957 return err; 3958 } 3959 3960 static int tegra_sor_remove(struct platform_device *pdev) 3961 { 3962 struct tegra_sor *sor = platform_get_drvdata(pdev); 3963 int err; 3964 3965 err = host1x_client_unregister(&sor->client); 3966 if (err < 0) { 3967 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", 3968 err); 3969 return err; 3970 } 3971 3972 pm_runtime_disable(&pdev->dev); 3973 3974 if (sor->ops && sor->ops->remove) { 3975 err = sor->ops->remove(sor); 3976 if (err < 0) 3977 dev_err(&pdev->dev, "failed to remove SOR: %d\n", err); 3978 } 3979 3980 tegra_output_remove(&sor->output); 3981 3982 return 0; 3983 } 3984 3985 static int __maybe_unused tegra_sor_suspend(struct device *dev) 3986 { 3987 struct tegra_sor *sor = dev_get_drvdata(dev); 3988 int err; 3989 3990 err = tegra_output_suspend(&sor->output); 3991 if (err < 0) { 3992 dev_err(dev, "failed to suspend output: %d\n", err); 3993 return err; 3994 } 3995 3996 if (sor->hdmi_supply) { 3997 err = regulator_disable(sor->hdmi_supply); 3998 if (err < 0) { 3999 tegra_output_resume(&sor->output); 4000 return err; 4001 } 4002 } 4003 4004 return 0; 4005 } 4006 4007 static int __maybe_unused tegra_sor_resume(struct device *dev) 4008 { 4009 struct tegra_sor *sor = dev_get_drvdata(dev); 4010 int err; 4011 4012 if (sor->hdmi_supply) { 4013 err = regulator_enable(sor->hdmi_supply); 4014 if (err < 0) 4015 return err; 4016 } 4017 4018 err = tegra_output_resume(&sor->output); 4019 if (err < 0) { 4020 dev_err(dev, "failed to resume output: %d\n", err); 4021 4022 if (sor->hdmi_supply) 4023 regulator_disable(sor->hdmi_supply); 4024 4025 return err; 4026 } 4027 4028 return 0; 4029 } 4030 4031 static const struct dev_pm_ops tegra_sor_pm_ops = { 4032 SET_SYSTEM_SLEEP_PM_OPS(tegra_sor_suspend, tegra_sor_resume) 4033 }; 4034 4035 struct platform_driver tegra_sor_driver = { 4036 .driver = { 4037 .name = "tegra-sor", 4038 .of_match_table = tegra_sor_of_match, 4039 .pm = &tegra_sor_pm_ops, 4040 }, 4041 .probe = tegra_sor_probe, 4042 .remove = tegra_sor_remove, 4043 }; 4044