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 void (*audio_enable)(struct tegra_sor *sor); 401 void (*audio_disable)(struct tegra_sor *sor); 402 }; 403 404 struct tegra_sor { 405 struct host1x_client client; 406 struct tegra_output output; 407 struct device *dev; 408 409 const struct tegra_sor_soc *soc; 410 void __iomem *regs; 411 unsigned int index; 412 unsigned int irq; 413 414 struct reset_control *rst; 415 struct clk *clk_parent; 416 struct clk *clk_safe; 417 struct clk *clk_out; 418 struct clk *clk_pad; 419 struct clk *clk_dp; 420 struct clk *clk; 421 422 u8 xbar_cfg[5]; 423 424 struct drm_dp_link link; 425 struct drm_dp_aux *aux; 426 427 struct drm_info_list *debugfs_files; 428 429 const struct tegra_sor_ops *ops; 430 enum tegra_io_pad pad; 431 432 /* for HDMI 2.0 */ 433 struct tegra_sor_hdmi_settings *settings; 434 unsigned int num_settings; 435 436 struct regulator *avdd_io_supply; 437 struct regulator *vdd_pll_supply; 438 struct regulator *hdmi_supply; 439 440 struct delayed_work scdc; 441 bool scdc_enabled; 442 443 struct tegra_hda_format format; 444 }; 445 446 struct tegra_sor_state { 447 struct drm_connector_state base; 448 449 unsigned int link_speed; 450 unsigned long pclk; 451 unsigned int bpc; 452 }; 453 454 static inline struct tegra_sor_state * 455 to_sor_state(struct drm_connector_state *state) 456 { 457 return container_of(state, struct tegra_sor_state, base); 458 } 459 460 struct tegra_sor_config { 461 u32 bits_per_pixel; 462 463 u32 active_polarity; 464 u32 active_count; 465 u32 tu_size; 466 u32 active_frac; 467 u32 watermark; 468 469 u32 hblank_symbols; 470 u32 vblank_symbols; 471 }; 472 473 static inline struct tegra_sor * 474 host1x_client_to_sor(struct host1x_client *client) 475 { 476 return container_of(client, struct tegra_sor, client); 477 } 478 479 static inline struct tegra_sor *to_sor(struct tegra_output *output) 480 { 481 return container_of(output, struct tegra_sor, output); 482 } 483 484 static inline u32 tegra_sor_readl(struct tegra_sor *sor, unsigned int offset) 485 { 486 u32 value = readl(sor->regs + (offset << 2)); 487 488 trace_sor_readl(sor->dev, offset, value); 489 490 return value; 491 } 492 493 static inline void tegra_sor_writel(struct tegra_sor *sor, u32 value, 494 unsigned int offset) 495 { 496 trace_sor_writel(sor->dev, offset, value); 497 writel(value, sor->regs + (offset << 2)); 498 } 499 500 static int tegra_sor_set_parent_clock(struct tegra_sor *sor, struct clk *parent) 501 { 502 int err; 503 504 clk_disable_unprepare(sor->clk); 505 506 err = clk_set_parent(sor->clk_out, parent); 507 if (err < 0) 508 return err; 509 510 err = clk_prepare_enable(sor->clk); 511 if (err < 0) 512 return err; 513 514 return 0; 515 } 516 517 struct tegra_clk_sor_pad { 518 struct clk_hw hw; 519 struct tegra_sor *sor; 520 }; 521 522 static inline struct tegra_clk_sor_pad *to_pad(struct clk_hw *hw) 523 { 524 return container_of(hw, struct tegra_clk_sor_pad, hw); 525 } 526 527 static const char * const tegra_clk_sor_pad_parents[2][2] = { 528 { "pll_d_out0", "pll_dp" }, 529 { "pll_d2_out0", "pll_dp" }, 530 }; 531 532 /* 533 * Implementing ->set_parent() here isn't really required because the parent 534 * will be explicitly selected in the driver code via the DP_CLK_SEL mux in 535 * the SOR_CLK_CNTRL register. This is primarily for compatibility with the 536 * Tegra186 and later SoC generations where the BPMP implements this clock 537 * and doesn't expose the mux via the common clock framework. 538 */ 539 540 static int tegra_clk_sor_pad_set_parent(struct clk_hw *hw, u8 index) 541 { 542 struct tegra_clk_sor_pad *pad = to_pad(hw); 543 struct tegra_sor *sor = pad->sor; 544 u32 value; 545 546 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 547 value &= ~SOR_CLK_CNTRL_DP_CLK_SEL_MASK; 548 549 switch (index) { 550 case 0: 551 value |= SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_PCLK; 552 break; 553 554 case 1: 555 value |= SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK; 556 break; 557 } 558 559 tegra_sor_writel(sor, value, SOR_CLK_CNTRL); 560 561 return 0; 562 } 563 564 static u8 tegra_clk_sor_pad_get_parent(struct clk_hw *hw) 565 { 566 struct tegra_clk_sor_pad *pad = to_pad(hw); 567 struct tegra_sor *sor = pad->sor; 568 u8 parent = U8_MAX; 569 u32 value; 570 571 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 572 573 switch (value & SOR_CLK_CNTRL_DP_CLK_SEL_MASK) { 574 case SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_PCLK: 575 case SOR_CLK_CNTRL_DP_CLK_SEL_DIFF_PCLK: 576 parent = 0; 577 break; 578 579 case SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK: 580 case SOR_CLK_CNTRL_DP_CLK_SEL_DIFF_DPCLK: 581 parent = 1; 582 break; 583 } 584 585 return parent; 586 } 587 588 static const struct clk_ops tegra_clk_sor_pad_ops = { 589 .set_parent = tegra_clk_sor_pad_set_parent, 590 .get_parent = tegra_clk_sor_pad_get_parent, 591 }; 592 593 static struct clk *tegra_clk_sor_pad_register(struct tegra_sor *sor, 594 const char *name) 595 { 596 struct tegra_clk_sor_pad *pad; 597 struct clk_init_data init; 598 struct clk *clk; 599 600 pad = devm_kzalloc(sor->dev, sizeof(*pad), GFP_KERNEL); 601 if (!pad) 602 return ERR_PTR(-ENOMEM); 603 604 pad->sor = sor; 605 606 init.name = name; 607 init.flags = 0; 608 init.parent_names = tegra_clk_sor_pad_parents[sor->index]; 609 init.num_parents = ARRAY_SIZE(tegra_clk_sor_pad_parents[sor->index]); 610 init.ops = &tegra_clk_sor_pad_ops; 611 612 pad->hw.init = &init; 613 614 clk = devm_clk_register(sor->dev, &pad->hw); 615 616 return clk; 617 } 618 619 static void tegra_sor_filter_rates(struct tegra_sor *sor) 620 { 621 struct drm_dp_link *link = &sor->link; 622 unsigned int i; 623 624 /* Tegra only supports RBR, HBR and HBR2 */ 625 for (i = 0; i < link->num_rates; i++) { 626 switch (link->rates[i]) { 627 case 1620000: 628 case 2700000: 629 case 5400000: 630 break; 631 632 default: 633 DRM_DEBUG_KMS("link rate %lu kHz not supported\n", 634 link->rates[i]); 635 link->rates[i] = 0; 636 break; 637 } 638 } 639 640 drm_dp_link_update_rates(link); 641 } 642 643 static int tegra_sor_power_up_lanes(struct tegra_sor *sor, unsigned int lanes) 644 { 645 unsigned long timeout; 646 u32 value; 647 648 /* 649 * Clear or set the PD_TXD bit corresponding to each lane, depending 650 * on whether it is used or not. 651 */ 652 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 653 654 if (lanes <= 2) 655 value &= ~(SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[3]) | 656 SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[2])); 657 else 658 value |= SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[3]) | 659 SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[2]); 660 661 if (lanes <= 1) 662 value &= ~SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[1]); 663 else 664 value |= SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[1]); 665 666 if (lanes == 0) 667 value &= ~SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[0]); 668 else 669 value |= SOR_DP_PADCTL_PD_TXD(sor->soc->lane_map[0]); 670 671 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 672 673 /* start lane sequencer */ 674 value = SOR_LANE_SEQ_CTL_TRIGGER | SOR_LANE_SEQ_CTL_SEQUENCE_DOWN | 675 SOR_LANE_SEQ_CTL_POWER_STATE_UP; 676 tegra_sor_writel(sor, value, SOR_LANE_SEQ_CTL); 677 678 timeout = jiffies + msecs_to_jiffies(250); 679 680 while (time_before(jiffies, timeout)) { 681 value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL); 682 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) == 0) 683 break; 684 685 usleep_range(250, 1000); 686 } 687 688 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) != 0) 689 return -ETIMEDOUT; 690 691 return 0; 692 } 693 694 static int tegra_sor_power_down_lanes(struct tegra_sor *sor) 695 { 696 unsigned long timeout; 697 u32 value; 698 699 /* power down all lanes */ 700 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 701 value &= ~(SOR_DP_PADCTL_PD_TXD_3 | SOR_DP_PADCTL_PD_TXD_0 | 702 SOR_DP_PADCTL_PD_TXD_1 | SOR_DP_PADCTL_PD_TXD_2); 703 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 704 705 /* start lane sequencer */ 706 value = SOR_LANE_SEQ_CTL_TRIGGER | SOR_LANE_SEQ_CTL_SEQUENCE_UP | 707 SOR_LANE_SEQ_CTL_POWER_STATE_DOWN; 708 tegra_sor_writel(sor, value, SOR_LANE_SEQ_CTL); 709 710 timeout = jiffies + msecs_to_jiffies(250); 711 712 while (time_before(jiffies, timeout)) { 713 value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL); 714 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) == 0) 715 break; 716 717 usleep_range(25, 100); 718 } 719 720 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) != 0) 721 return -ETIMEDOUT; 722 723 return 0; 724 } 725 726 static void tegra_sor_dp_precharge(struct tegra_sor *sor, unsigned int lanes) 727 { 728 u32 value; 729 730 /* pre-charge all used lanes */ 731 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 732 733 if (lanes <= 2) 734 value &= ~(SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[3]) | 735 SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[2])); 736 else 737 value |= SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[3]) | 738 SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[2]); 739 740 if (lanes <= 1) 741 value &= ~SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[1]); 742 else 743 value |= SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[1]); 744 745 if (lanes == 0) 746 value &= ~SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[0]); 747 else 748 value |= SOR_DP_PADCTL_CM_TXD(sor->soc->lane_map[0]); 749 750 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 751 752 usleep_range(15, 100); 753 754 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 755 value &= ~(SOR_DP_PADCTL_CM_TXD_3 | SOR_DP_PADCTL_CM_TXD_2 | 756 SOR_DP_PADCTL_CM_TXD_1 | SOR_DP_PADCTL_CM_TXD_0); 757 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 758 } 759 760 static void tegra_sor_dp_term_calibrate(struct tegra_sor *sor) 761 { 762 u32 mask = 0x08, adj = 0, value; 763 764 /* enable pad calibration logic */ 765 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 766 value &= ~SOR_DP_PADCTL_PAD_CAL_PD; 767 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 768 769 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 770 value |= SOR_PLL1_TMDS_TERM; 771 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 772 773 while (mask) { 774 adj |= mask; 775 776 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 777 value &= ~SOR_PLL1_TMDS_TERMADJ_MASK; 778 value |= SOR_PLL1_TMDS_TERMADJ(adj); 779 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 780 781 usleep_range(100, 200); 782 783 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 784 if (value & SOR_PLL1_TERM_COMPOUT) 785 adj &= ~mask; 786 787 mask >>= 1; 788 } 789 790 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 791 value &= ~SOR_PLL1_TMDS_TERMADJ_MASK; 792 value |= SOR_PLL1_TMDS_TERMADJ(adj); 793 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 794 795 /* disable pad calibration logic */ 796 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 797 value |= SOR_DP_PADCTL_PAD_CAL_PD; 798 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 799 } 800 801 static int tegra_sor_dp_link_apply_training(struct drm_dp_link *link) 802 { 803 struct tegra_sor *sor = container_of(link, struct tegra_sor, link); 804 u32 voltage_swing = 0, pre_emphasis = 0, post_cursor = 0; 805 const struct tegra_sor_soc *soc = sor->soc; 806 u32 pattern = 0, tx_pu = 0, value; 807 unsigned int i; 808 809 for (value = 0, i = 0; i < link->lanes; i++) { 810 u8 vs = link->train.request.voltage_swing[i]; 811 u8 pe = link->train.request.pre_emphasis[i]; 812 u8 pc = link->train.request.post_cursor[i]; 813 u8 shift = sor->soc->lane_map[i] << 3; 814 815 voltage_swing |= soc->voltage_swing[pc][vs][pe] << shift; 816 pre_emphasis |= soc->pre_emphasis[pc][vs][pe] << shift; 817 post_cursor |= soc->post_cursor[pc][vs][pe] << shift; 818 819 if (sor->soc->tx_pu[pc][vs][pe] > tx_pu) 820 tx_pu = sor->soc->tx_pu[pc][vs][pe]; 821 822 switch (link->train.pattern) { 823 case DP_TRAINING_PATTERN_DISABLE: 824 value = SOR_DP_TPG_SCRAMBLER_GALIOS | 825 SOR_DP_TPG_PATTERN_NONE; 826 break; 827 828 case DP_TRAINING_PATTERN_1: 829 value = SOR_DP_TPG_SCRAMBLER_NONE | 830 SOR_DP_TPG_PATTERN_TRAIN1; 831 break; 832 833 case DP_TRAINING_PATTERN_2: 834 value = SOR_DP_TPG_SCRAMBLER_NONE | 835 SOR_DP_TPG_PATTERN_TRAIN2; 836 break; 837 838 case DP_TRAINING_PATTERN_3: 839 value = SOR_DP_TPG_SCRAMBLER_NONE | 840 SOR_DP_TPG_PATTERN_TRAIN3; 841 break; 842 843 default: 844 return -EINVAL; 845 } 846 847 if (link->caps.channel_coding) 848 value |= SOR_DP_TPG_CHANNEL_CODING; 849 850 pattern = pattern << 8 | value; 851 } 852 853 tegra_sor_writel(sor, voltage_swing, SOR_LANE_DRIVE_CURRENT0); 854 tegra_sor_writel(sor, pre_emphasis, SOR_LANE_PREEMPHASIS0); 855 856 if (link->caps.tps3_supported) 857 tegra_sor_writel(sor, post_cursor, SOR_LANE_POSTCURSOR0); 858 859 tegra_sor_writel(sor, pattern, SOR_DP_TPG); 860 861 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 862 value &= ~SOR_DP_PADCTL_TX_PU_MASK; 863 value |= SOR_DP_PADCTL_TX_PU_ENABLE; 864 value |= SOR_DP_PADCTL_TX_PU(tx_pu); 865 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 866 867 usleep_range(20, 100); 868 869 return 0; 870 } 871 872 static int tegra_sor_dp_link_configure(struct drm_dp_link *link) 873 { 874 struct tegra_sor *sor = container_of(link, struct tegra_sor, link); 875 unsigned int rate, lanes; 876 u32 value; 877 int err; 878 879 rate = drm_dp_link_rate_to_bw_code(link->rate); 880 lanes = link->lanes; 881 882 /* configure link speed and lane count */ 883 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 884 value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK; 885 value |= SOR_CLK_CNTRL_DP_LINK_SPEED(rate); 886 tegra_sor_writel(sor, value, SOR_CLK_CNTRL); 887 888 value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); 889 value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK; 890 value |= SOR_DP_LINKCTL_LANE_COUNT(lanes); 891 892 if (link->caps.enhanced_framing) 893 value |= SOR_DP_LINKCTL_ENHANCED_FRAME; 894 895 tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); 896 897 usleep_range(400, 1000); 898 899 /* configure load pulse position adjustment */ 900 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 901 value &= ~SOR_PLL1_LOADADJ_MASK; 902 903 switch (rate) { 904 case DP_LINK_BW_1_62: 905 value |= SOR_PLL1_LOADADJ(0x3); 906 break; 907 908 case DP_LINK_BW_2_7: 909 value |= SOR_PLL1_LOADADJ(0x4); 910 break; 911 912 case DP_LINK_BW_5_4: 913 value |= SOR_PLL1_LOADADJ(0x6); 914 break; 915 } 916 917 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 918 919 /* use alternate scrambler reset for eDP */ 920 value = tegra_sor_readl(sor, SOR_DP_SPARE0); 921 922 if (link->edp == 0) 923 value &= ~SOR_DP_SPARE_PANEL_INTERNAL; 924 else 925 value |= SOR_DP_SPARE_PANEL_INTERNAL; 926 927 tegra_sor_writel(sor, value, SOR_DP_SPARE0); 928 929 err = tegra_sor_power_down_lanes(sor); 930 if (err < 0) { 931 dev_err(sor->dev, "failed to power down lanes: %d\n", err); 932 return err; 933 } 934 935 /* power up and pre-charge lanes */ 936 err = tegra_sor_power_up_lanes(sor, lanes); 937 if (err < 0) { 938 dev_err(sor->dev, "failed to power up %u lane%s: %d\n", 939 lanes, (lanes != 1) ? "s" : "", err); 940 return err; 941 } 942 943 tegra_sor_dp_precharge(sor, lanes); 944 945 return 0; 946 } 947 948 static const struct drm_dp_link_ops tegra_sor_dp_link_ops = { 949 .apply_training = tegra_sor_dp_link_apply_training, 950 .configure = tegra_sor_dp_link_configure, 951 }; 952 953 static void tegra_sor_super_update(struct tegra_sor *sor) 954 { 955 tegra_sor_writel(sor, 0, SOR_SUPER_STATE0); 956 tegra_sor_writel(sor, 1, SOR_SUPER_STATE0); 957 tegra_sor_writel(sor, 0, SOR_SUPER_STATE0); 958 } 959 960 static void tegra_sor_update(struct tegra_sor *sor) 961 { 962 tegra_sor_writel(sor, 0, SOR_STATE0); 963 tegra_sor_writel(sor, 1, SOR_STATE0); 964 tegra_sor_writel(sor, 0, SOR_STATE0); 965 } 966 967 static int tegra_sor_setup_pwm(struct tegra_sor *sor, unsigned long timeout) 968 { 969 u32 value; 970 971 value = tegra_sor_readl(sor, SOR_PWM_DIV); 972 value &= ~SOR_PWM_DIV_MASK; 973 value |= 0x400; /* period */ 974 tegra_sor_writel(sor, value, SOR_PWM_DIV); 975 976 value = tegra_sor_readl(sor, SOR_PWM_CTL); 977 value &= ~SOR_PWM_CTL_DUTY_CYCLE_MASK; 978 value |= 0x400; /* duty cycle */ 979 value &= ~SOR_PWM_CTL_CLK_SEL; /* clock source: PCLK */ 980 value |= SOR_PWM_CTL_TRIGGER; 981 tegra_sor_writel(sor, value, SOR_PWM_CTL); 982 983 timeout = jiffies + msecs_to_jiffies(timeout); 984 985 while (time_before(jiffies, timeout)) { 986 value = tegra_sor_readl(sor, SOR_PWM_CTL); 987 if ((value & SOR_PWM_CTL_TRIGGER) == 0) 988 return 0; 989 990 usleep_range(25, 100); 991 } 992 993 return -ETIMEDOUT; 994 } 995 996 static int tegra_sor_attach(struct tegra_sor *sor) 997 { 998 unsigned long value, timeout; 999 1000 /* wake up in normal mode */ 1001 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1002 value |= SOR_SUPER_STATE_HEAD_MODE_AWAKE; 1003 value |= SOR_SUPER_STATE_MODE_NORMAL; 1004 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1005 tegra_sor_super_update(sor); 1006 1007 /* attach */ 1008 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1009 value |= SOR_SUPER_STATE_ATTACHED; 1010 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1011 tegra_sor_super_update(sor); 1012 1013 timeout = jiffies + msecs_to_jiffies(250); 1014 1015 while (time_before(jiffies, timeout)) { 1016 value = tegra_sor_readl(sor, SOR_TEST); 1017 if ((value & SOR_TEST_ATTACHED) != 0) 1018 return 0; 1019 1020 usleep_range(25, 100); 1021 } 1022 1023 return -ETIMEDOUT; 1024 } 1025 1026 static int tegra_sor_wakeup(struct tegra_sor *sor) 1027 { 1028 unsigned long value, timeout; 1029 1030 timeout = jiffies + msecs_to_jiffies(250); 1031 1032 /* wait for head to wake up */ 1033 while (time_before(jiffies, timeout)) { 1034 value = tegra_sor_readl(sor, SOR_TEST); 1035 value &= SOR_TEST_HEAD_MODE_MASK; 1036 1037 if (value == SOR_TEST_HEAD_MODE_AWAKE) 1038 return 0; 1039 1040 usleep_range(25, 100); 1041 } 1042 1043 return -ETIMEDOUT; 1044 } 1045 1046 static int tegra_sor_power_up(struct tegra_sor *sor, unsigned long timeout) 1047 { 1048 u32 value; 1049 1050 value = tegra_sor_readl(sor, SOR_PWR); 1051 value |= SOR_PWR_TRIGGER | SOR_PWR_NORMAL_STATE_PU; 1052 tegra_sor_writel(sor, value, SOR_PWR); 1053 1054 timeout = jiffies + msecs_to_jiffies(timeout); 1055 1056 while (time_before(jiffies, timeout)) { 1057 value = tegra_sor_readl(sor, SOR_PWR); 1058 if ((value & SOR_PWR_TRIGGER) == 0) 1059 return 0; 1060 1061 usleep_range(25, 100); 1062 } 1063 1064 return -ETIMEDOUT; 1065 } 1066 1067 struct tegra_sor_params { 1068 /* number of link clocks per line */ 1069 unsigned int num_clocks; 1070 /* ratio between input and output */ 1071 u64 ratio; 1072 /* precision factor */ 1073 u64 precision; 1074 1075 unsigned int active_polarity; 1076 unsigned int active_count; 1077 unsigned int active_frac; 1078 unsigned int tu_size; 1079 unsigned int error; 1080 }; 1081 1082 static int tegra_sor_compute_params(struct tegra_sor *sor, 1083 struct tegra_sor_params *params, 1084 unsigned int tu_size) 1085 { 1086 u64 active_sym, active_count, frac, approx; 1087 u32 active_polarity, active_frac = 0; 1088 const u64 f = params->precision; 1089 s64 error; 1090 1091 active_sym = params->ratio * tu_size; 1092 active_count = div_u64(active_sym, f) * f; 1093 frac = active_sym - active_count; 1094 1095 /* fraction < 0.5 */ 1096 if (frac >= (f / 2)) { 1097 active_polarity = 1; 1098 frac = f - frac; 1099 } else { 1100 active_polarity = 0; 1101 } 1102 1103 if (frac != 0) { 1104 frac = div_u64(f * f, frac); /* 1/fraction */ 1105 if (frac <= (15 * f)) { 1106 active_frac = div_u64(frac, f); 1107 1108 /* round up */ 1109 if (active_polarity) 1110 active_frac++; 1111 } else { 1112 active_frac = active_polarity ? 1 : 15; 1113 } 1114 } 1115 1116 if (active_frac == 1) 1117 active_polarity = 0; 1118 1119 if (active_polarity == 1) { 1120 if (active_frac) { 1121 approx = active_count + (active_frac * (f - 1)) * f; 1122 approx = div_u64(approx, active_frac * f); 1123 } else { 1124 approx = active_count + f; 1125 } 1126 } else { 1127 if (active_frac) 1128 approx = active_count + div_u64(f, active_frac); 1129 else 1130 approx = active_count; 1131 } 1132 1133 error = div_s64(active_sym - approx, tu_size); 1134 error *= params->num_clocks; 1135 1136 if (error <= 0 && abs(error) < params->error) { 1137 params->active_count = div_u64(active_count, f); 1138 params->active_polarity = active_polarity; 1139 params->active_frac = active_frac; 1140 params->error = abs(error); 1141 params->tu_size = tu_size; 1142 1143 if (error == 0) 1144 return true; 1145 } 1146 1147 return false; 1148 } 1149 1150 static int tegra_sor_compute_config(struct tegra_sor *sor, 1151 const struct drm_display_mode *mode, 1152 struct tegra_sor_config *config, 1153 struct drm_dp_link *link) 1154 { 1155 const u64 f = 100000, link_rate = link->rate * 1000; 1156 const u64 pclk = mode->clock * 1000; 1157 u64 input, output, watermark, num; 1158 struct tegra_sor_params params; 1159 u32 num_syms_per_line; 1160 unsigned int i; 1161 1162 if (!link_rate || !link->lanes || !pclk || !config->bits_per_pixel) 1163 return -EINVAL; 1164 1165 input = pclk * config->bits_per_pixel; 1166 output = link_rate * 8 * link->lanes; 1167 1168 if (input >= output) 1169 return -ERANGE; 1170 1171 memset(¶ms, 0, sizeof(params)); 1172 params.ratio = div64_u64(input * f, output); 1173 params.num_clocks = div_u64(link_rate * mode->hdisplay, pclk); 1174 params.precision = f; 1175 params.error = 64 * f; 1176 params.tu_size = 64; 1177 1178 for (i = params.tu_size; i >= 32; i--) 1179 if (tegra_sor_compute_params(sor, ¶ms, i)) 1180 break; 1181 1182 if (params.active_frac == 0) { 1183 config->active_polarity = 0; 1184 config->active_count = params.active_count; 1185 1186 if (!params.active_polarity) 1187 config->active_count--; 1188 1189 config->tu_size = params.tu_size; 1190 config->active_frac = 1; 1191 } else { 1192 config->active_polarity = params.active_polarity; 1193 config->active_count = params.active_count; 1194 config->active_frac = params.active_frac; 1195 config->tu_size = params.tu_size; 1196 } 1197 1198 dev_dbg(sor->dev, 1199 "polarity: %d active count: %d tu size: %d active frac: %d\n", 1200 config->active_polarity, config->active_count, 1201 config->tu_size, config->active_frac); 1202 1203 watermark = params.ratio * config->tu_size * (f - params.ratio); 1204 watermark = div_u64(watermark, f); 1205 1206 watermark = div_u64(watermark + params.error, f); 1207 config->watermark = watermark + (config->bits_per_pixel / 8) + 2; 1208 num_syms_per_line = (mode->hdisplay * config->bits_per_pixel) * 1209 (link->lanes * 8); 1210 1211 if (config->watermark > 30) { 1212 config->watermark = 30; 1213 dev_err(sor->dev, 1214 "unable to compute TU size, forcing watermark to %u\n", 1215 config->watermark); 1216 } else if (config->watermark > num_syms_per_line) { 1217 config->watermark = num_syms_per_line; 1218 dev_err(sor->dev, "watermark too high, forcing to %u\n", 1219 config->watermark); 1220 } 1221 1222 /* compute the number of symbols per horizontal blanking interval */ 1223 num = ((mode->htotal - mode->hdisplay) - 7) * link_rate; 1224 config->hblank_symbols = div_u64(num, pclk); 1225 1226 if (link->caps.enhanced_framing) 1227 config->hblank_symbols -= 3; 1228 1229 config->hblank_symbols -= 12 / link->lanes; 1230 1231 /* compute the number of symbols per vertical blanking interval */ 1232 num = (mode->hdisplay - 25) * link_rate; 1233 config->vblank_symbols = div_u64(num, pclk); 1234 config->vblank_symbols -= 36 / link->lanes + 4; 1235 1236 dev_dbg(sor->dev, "blank symbols: H:%u V:%u\n", config->hblank_symbols, 1237 config->vblank_symbols); 1238 1239 return 0; 1240 } 1241 1242 static void tegra_sor_apply_config(struct tegra_sor *sor, 1243 const struct tegra_sor_config *config) 1244 { 1245 u32 value; 1246 1247 value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); 1248 value &= ~SOR_DP_LINKCTL_TU_SIZE_MASK; 1249 value |= SOR_DP_LINKCTL_TU_SIZE(config->tu_size); 1250 tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); 1251 1252 value = tegra_sor_readl(sor, SOR_DP_CONFIG0); 1253 value &= ~SOR_DP_CONFIG_WATERMARK_MASK; 1254 value |= SOR_DP_CONFIG_WATERMARK(config->watermark); 1255 1256 value &= ~SOR_DP_CONFIG_ACTIVE_SYM_COUNT_MASK; 1257 value |= SOR_DP_CONFIG_ACTIVE_SYM_COUNT(config->active_count); 1258 1259 value &= ~SOR_DP_CONFIG_ACTIVE_SYM_FRAC_MASK; 1260 value |= SOR_DP_CONFIG_ACTIVE_SYM_FRAC(config->active_frac); 1261 1262 if (config->active_polarity) 1263 value |= SOR_DP_CONFIG_ACTIVE_SYM_POLARITY; 1264 else 1265 value &= ~SOR_DP_CONFIG_ACTIVE_SYM_POLARITY; 1266 1267 value |= SOR_DP_CONFIG_ACTIVE_SYM_ENABLE; 1268 value |= SOR_DP_CONFIG_DISPARITY_NEGATIVE; 1269 tegra_sor_writel(sor, value, SOR_DP_CONFIG0); 1270 1271 value = tegra_sor_readl(sor, SOR_DP_AUDIO_HBLANK_SYMBOLS); 1272 value &= ~SOR_DP_AUDIO_HBLANK_SYMBOLS_MASK; 1273 value |= config->hblank_symbols & 0xffff; 1274 tegra_sor_writel(sor, value, SOR_DP_AUDIO_HBLANK_SYMBOLS); 1275 1276 value = tegra_sor_readl(sor, SOR_DP_AUDIO_VBLANK_SYMBOLS); 1277 value &= ~SOR_DP_AUDIO_VBLANK_SYMBOLS_MASK; 1278 value |= config->vblank_symbols & 0xffff; 1279 tegra_sor_writel(sor, value, SOR_DP_AUDIO_VBLANK_SYMBOLS); 1280 } 1281 1282 static void tegra_sor_mode_set(struct tegra_sor *sor, 1283 const struct drm_display_mode *mode, 1284 struct tegra_sor_state *state) 1285 { 1286 struct tegra_dc *dc = to_tegra_dc(sor->output.encoder.crtc); 1287 unsigned int vbe, vse, hbe, hse, vbs, hbs; 1288 u32 value; 1289 1290 value = tegra_sor_readl(sor, SOR_STATE1); 1291 value &= ~SOR_STATE_ASY_PIXELDEPTH_MASK; 1292 value &= ~SOR_STATE_ASY_CRC_MODE_MASK; 1293 value &= ~SOR_STATE_ASY_OWNER_MASK; 1294 1295 value |= SOR_STATE_ASY_CRC_MODE_COMPLETE | 1296 SOR_STATE_ASY_OWNER(dc->pipe + 1); 1297 1298 if (mode->flags & DRM_MODE_FLAG_PHSYNC) 1299 value &= ~SOR_STATE_ASY_HSYNCPOL; 1300 1301 if (mode->flags & DRM_MODE_FLAG_NHSYNC) 1302 value |= SOR_STATE_ASY_HSYNCPOL; 1303 1304 if (mode->flags & DRM_MODE_FLAG_PVSYNC) 1305 value &= ~SOR_STATE_ASY_VSYNCPOL; 1306 1307 if (mode->flags & DRM_MODE_FLAG_NVSYNC) 1308 value |= SOR_STATE_ASY_VSYNCPOL; 1309 1310 switch (state->bpc) { 1311 case 16: 1312 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_48_444; 1313 break; 1314 1315 case 12: 1316 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_36_444; 1317 break; 1318 1319 case 10: 1320 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_30_444; 1321 break; 1322 1323 case 8: 1324 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_24_444; 1325 break; 1326 1327 case 6: 1328 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_18_444; 1329 break; 1330 1331 default: 1332 value |= SOR_STATE_ASY_PIXELDEPTH_BPP_24_444; 1333 break; 1334 } 1335 1336 tegra_sor_writel(sor, value, SOR_STATE1); 1337 1338 /* 1339 * TODO: The video timing programming below doesn't seem to match the 1340 * register definitions. 1341 */ 1342 1343 value = ((mode->vtotal & 0x7fff) << 16) | (mode->htotal & 0x7fff); 1344 tegra_sor_writel(sor, value, sor->soc->regs->head_state1 + dc->pipe); 1345 1346 /* sync end = sync width - 1 */ 1347 vse = mode->vsync_end - mode->vsync_start - 1; 1348 hse = mode->hsync_end - mode->hsync_start - 1; 1349 1350 value = ((vse & 0x7fff) << 16) | (hse & 0x7fff); 1351 tegra_sor_writel(sor, value, sor->soc->regs->head_state2 + dc->pipe); 1352 1353 /* blank end = sync end + back porch */ 1354 vbe = vse + (mode->vtotal - mode->vsync_end); 1355 hbe = hse + (mode->htotal - mode->hsync_end); 1356 1357 value = ((vbe & 0x7fff) << 16) | (hbe & 0x7fff); 1358 tegra_sor_writel(sor, value, sor->soc->regs->head_state3 + dc->pipe); 1359 1360 /* blank start = blank end + active */ 1361 vbs = vbe + mode->vdisplay; 1362 hbs = hbe + mode->hdisplay; 1363 1364 value = ((vbs & 0x7fff) << 16) | (hbs & 0x7fff); 1365 tegra_sor_writel(sor, value, sor->soc->regs->head_state4 + dc->pipe); 1366 1367 /* XXX interlacing support */ 1368 tegra_sor_writel(sor, 0x001, sor->soc->regs->head_state5 + dc->pipe); 1369 } 1370 1371 static int tegra_sor_detach(struct tegra_sor *sor) 1372 { 1373 unsigned long value, timeout; 1374 1375 /* switch to safe mode */ 1376 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1377 value &= ~SOR_SUPER_STATE_MODE_NORMAL; 1378 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1379 tegra_sor_super_update(sor); 1380 1381 timeout = jiffies + msecs_to_jiffies(250); 1382 1383 while (time_before(jiffies, timeout)) { 1384 value = tegra_sor_readl(sor, SOR_PWR); 1385 if (value & SOR_PWR_MODE_SAFE) 1386 break; 1387 } 1388 1389 if ((value & SOR_PWR_MODE_SAFE) == 0) 1390 return -ETIMEDOUT; 1391 1392 /* go to sleep */ 1393 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1394 value &= ~SOR_SUPER_STATE_HEAD_MODE_MASK; 1395 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1396 tegra_sor_super_update(sor); 1397 1398 /* detach */ 1399 value = tegra_sor_readl(sor, SOR_SUPER_STATE1); 1400 value &= ~SOR_SUPER_STATE_ATTACHED; 1401 tegra_sor_writel(sor, value, SOR_SUPER_STATE1); 1402 tegra_sor_super_update(sor); 1403 1404 timeout = jiffies + msecs_to_jiffies(250); 1405 1406 while (time_before(jiffies, timeout)) { 1407 value = tegra_sor_readl(sor, SOR_TEST); 1408 if ((value & SOR_TEST_ATTACHED) == 0) 1409 break; 1410 1411 usleep_range(25, 100); 1412 } 1413 1414 if ((value & SOR_TEST_ATTACHED) != 0) 1415 return -ETIMEDOUT; 1416 1417 return 0; 1418 } 1419 1420 static int tegra_sor_power_down(struct tegra_sor *sor) 1421 { 1422 unsigned long value, timeout; 1423 int err; 1424 1425 value = tegra_sor_readl(sor, SOR_PWR); 1426 value &= ~SOR_PWR_NORMAL_STATE_PU; 1427 value |= SOR_PWR_TRIGGER; 1428 tegra_sor_writel(sor, value, SOR_PWR); 1429 1430 timeout = jiffies + msecs_to_jiffies(250); 1431 1432 while (time_before(jiffies, timeout)) { 1433 value = tegra_sor_readl(sor, SOR_PWR); 1434 if ((value & SOR_PWR_TRIGGER) == 0) 1435 return 0; 1436 1437 usleep_range(25, 100); 1438 } 1439 1440 if ((value & SOR_PWR_TRIGGER) != 0) 1441 return -ETIMEDOUT; 1442 1443 /* switch to safe parent clock */ 1444 err = tegra_sor_set_parent_clock(sor, sor->clk_safe); 1445 if (err < 0) { 1446 dev_err(sor->dev, "failed to set safe parent clock: %d\n", err); 1447 return err; 1448 } 1449 1450 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 1451 value |= SOR_PLL2_PORT_POWERDOWN; 1452 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 1453 1454 usleep_range(20, 100); 1455 1456 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 1457 value |= SOR_PLL0_VCOPD | SOR_PLL0_PWR; 1458 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 1459 1460 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 1461 value |= SOR_PLL2_SEQ_PLLCAPPD; 1462 value |= SOR_PLL2_SEQ_PLLCAPPD_ENFORCE; 1463 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 1464 1465 usleep_range(20, 100); 1466 1467 return 0; 1468 } 1469 1470 static int tegra_sor_crc_wait(struct tegra_sor *sor, unsigned long timeout) 1471 { 1472 u32 value; 1473 1474 timeout = jiffies + msecs_to_jiffies(timeout); 1475 1476 while (time_before(jiffies, timeout)) { 1477 value = tegra_sor_readl(sor, SOR_CRCA); 1478 if (value & SOR_CRCA_VALID) 1479 return 0; 1480 1481 usleep_range(100, 200); 1482 } 1483 1484 return -ETIMEDOUT; 1485 } 1486 1487 static int tegra_sor_show_crc(struct seq_file *s, void *data) 1488 { 1489 struct drm_info_node *node = s->private; 1490 struct tegra_sor *sor = node->info_ent->data; 1491 struct drm_crtc *crtc = sor->output.encoder.crtc; 1492 struct drm_device *drm = node->minor->dev; 1493 int err = 0; 1494 u32 value; 1495 1496 drm_modeset_lock_all(drm); 1497 1498 if (!crtc || !crtc->state->active) { 1499 err = -EBUSY; 1500 goto unlock; 1501 } 1502 1503 value = tegra_sor_readl(sor, SOR_STATE1); 1504 value &= ~SOR_STATE_ASY_CRC_MODE_MASK; 1505 tegra_sor_writel(sor, value, SOR_STATE1); 1506 1507 value = tegra_sor_readl(sor, SOR_CRC_CNTRL); 1508 value |= SOR_CRC_CNTRL_ENABLE; 1509 tegra_sor_writel(sor, value, SOR_CRC_CNTRL); 1510 1511 value = tegra_sor_readl(sor, SOR_TEST); 1512 value &= ~SOR_TEST_CRC_POST_SERIALIZE; 1513 tegra_sor_writel(sor, value, SOR_TEST); 1514 1515 err = tegra_sor_crc_wait(sor, 100); 1516 if (err < 0) 1517 goto unlock; 1518 1519 tegra_sor_writel(sor, SOR_CRCA_RESET, SOR_CRCA); 1520 value = tegra_sor_readl(sor, SOR_CRCB); 1521 1522 seq_printf(s, "%08x\n", value); 1523 1524 unlock: 1525 drm_modeset_unlock_all(drm); 1526 return err; 1527 } 1528 1529 #define DEBUGFS_REG32(_name) { .name = #_name, .offset = _name } 1530 1531 static const struct debugfs_reg32 tegra_sor_regs[] = { 1532 DEBUGFS_REG32(SOR_CTXSW), 1533 DEBUGFS_REG32(SOR_SUPER_STATE0), 1534 DEBUGFS_REG32(SOR_SUPER_STATE1), 1535 DEBUGFS_REG32(SOR_STATE0), 1536 DEBUGFS_REG32(SOR_STATE1), 1537 DEBUGFS_REG32(SOR_HEAD_STATE0(0)), 1538 DEBUGFS_REG32(SOR_HEAD_STATE0(1)), 1539 DEBUGFS_REG32(SOR_HEAD_STATE1(0)), 1540 DEBUGFS_REG32(SOR_HEAD_STATE1(1)), 1541 DEBUGFS_REG32(SOR_HEAD_STATE2(0)), 1542 DEBUGFS_REG32(SOR_HEAD_STATE2(1)), 1543 DEBUGFS_REG32(SOR_HEAD_STATE3(0)), 1544 DEBUGFS_REG32(SOR_HEAD_STATE3(1)), 1545 DEBUGFS_REG32(SOR_HEAD_STATE4(0)), 1546 DEBUGFS_REG32(SOR_HEAD_STATE4(1)), 1547 DEBUGFS_REG32(SOR_HEAD_STATE5(0)), 1548 DEBUGFS_REG32(SOR_HEAD_STATE5(1)), 1549 DEBUGFS_REG32(SOR_CRC_CNTRL), 1550 DEBUGFS_REG32(SOR_DP_DEBUG_MVID), 1551 DEBUGFS_REG32(SOR_CLK_CNTRL), 1552 DEBUGFS_REG32(SOR_CAP), 1553 DEBUGFS_REG32(SOR_PWR), 1554 DEBUGFS_REG32(SOR_TEST), 1555 DEBUGFS_REG32(SOR_PLL0), 1556 DEBUGFS_REG32(SOR_PLL1), 1557 DEBUGFS_REG32(SOR_PLL2), 1558 DEBUGFS_REG32(SOR_PLL3), 1559 DEBUGFS_REG32(SOR_CSTM), 1560 DEBUGFS_REG32(SOR_LVDS), 1561 DEBUGFS_REG32(SOR_CRCA), 1562 DEBUGFS_REG32(SOR_CRCB), 1563 DEBUGFS_REG32(SOR_BLANK), 1564 DEBUGFS_REG32(SOR_SEQ_CTL), 1565 DEBUGFS_REG32(SOR_LANE_SEQ_CTL), 1566 DEBUGFS_REG32(SOR_SEQ_INST(0)), 1567 DEBUGFS_REG32(SOR_SEQ_INST(1)), 1568 DEBUGFS_REG32(SOR_SEQ_INST(2)), 1569 DEBUGFS_REG32(SOR_SEQ_INST(3)), 1570 DEBUGFS_REG32(SOR_SEQ_INST(4)), 1571 DEBUGFS_REG32(SOR_SEQ_INST(5)), 1572 DEBUGFS_REG32(SOR_SEQ_INST(6)), 1573 DEBUGFS_REG32(SOR_SEQ_INST(7)), 1574 DEBUGFS_REG32(SOR_SEQ_INST(8)), 1575 DEBUGFS_REG32(SOR_SEQ_INST(9)), 1576 DEBUGFS_REG32(SOR_SEQ_INST(10)), 1577 DEBUGFS_REG32(SOR_SEQ_INST(11)), 1578 DEBUGFS_REG32(SOR_SEQ_INST(12)), 1579 DEBUGFS_REG32(SOR_SEQ_INST(13)), 1580 DEBUGFS_REG32(SOR_SEQ_INST(14)), 1581 DEBUGFS_REG32(SOR_SEQ_INST(15)), 1582 DEBUGFS_REG32(SOR_PWM_DIV), 1583 DEBUGFS_REG32(SOR_PWM_CTL), 1584 DEBUGFS_REG32(SOR_VCRC_A0), 1585 DEBUGFS_REG32(SOR_VCRC_A1), 1586 DEBUGFS_REG32(SOR_VCRC_B0), 1587 DEBUGFS_REG32(SOR_VCRC_B1), 1588 DEBUGFS_REG32(SOR_CCRC_A0), 1589 DEBUGFS_REG32(SOR_CCRC_A1), 1590 DEBUGFS_REG32(SOR_CCRC_B0), 1591 DEBUGFS_REG32(SOR_CCRC_B1), 1592 DEBUGFS_REG32(SOR_EDATA_A0), 1593 DEBUGFS_REG32(SOR_EDATA_A1), 1594 DEBUGFS_REG32(SOR_EDATA_B0), 1595 DEBUGFS_REG32(SOR_EDATA_B1), 1596 DEBUGFS_REG32(SOR_COUNT_A0), 1597 DEBUGFS_REG32(SOR_COUNT_A1), 1598 DEBUGFS_REG32(SOR_COUNT_B0), 1599 DEBUGFS_REG32(SOR_COUNT_B1), 1600 DEBUGFS_REG32(SOR_DEBUG_A0), 1601 DEBUGFS_REG32(SOR_DEBUG_A1), 1602 DEBUGFS_REG32(SOR_DEBUG_B0), 1603 DEBUGFS_REG32(SOR_DEBUG_B1), 1604 DEBUGFS_REG32(SOR_TRIG), 1605 DEBUGFS_REG32(SOR_MSCHECK), 1606 DEBUGFS_REG32(SOR_XBAR_CTRL), 1607 DEBUGFS_REG32(SOR_XBAR_POL), 1608 DEBUGFS_REG32(SOR_DP_LINKCTL0), 1609 DEBUGFS_REG32(SOR_DP_LINKCTL1), 1610 DEBUGFS_REG32(SOR_LANE_DRIVE_CURRENT0), 1611 DEBUGFS_REG32(SOR_LANE_DRIVE_CURRENT1), 1612 DEBUGFS_REG32(SOR_LANE4_DRIVE_CURRENT0), 1613 DEBUGFS_REG32(SOR_LANE4_DRIVE_CURRENT1), 1614 DEBUGFS_REG32(SOR_LANE_PREEMPHASIS0), 1615 DEBUGFS_REG32(SOR_LANE_PREEMPHASIS1), 1616 DEBUGFS_REG32(SOR_LANE4_PREEMPHASIS0), 1617 DEBUGFS_REG32(SOR_LANE4_PREEMPHASIS1), 1618 DEBUGFS_REG32(SOR_LANE_POSTCURSOR0), 1619 DEBUGFS_REG32(SOR_LANE_POSTCURSOR1), 1620 DEBUGFS_REG32(SOR_DP_CONFIG0), 1621 DEBUGFS_REG32(SOR_DP_CONFIG1), 1622 DEBUGFS_REG32(SOR_DP_MN0), 1623 DEBUGFS_REG32(SOR_DP_MN1), 1624 DEBUGFS_REG32(SOR_DP_PADCTL0), 1625 DEBUGFS_REG32(SOR_DP_PADCTL1), 1626 DEBUGFS_REG32(SOR_DP_PADCTL2), 1627 DEBUGFS_REG32(SOR_DP_DEBUG0), 1628 DEBUGFS_REG32(SOR_DP_DEBUG1), 1629 DEBUGFS_REG32(SOR_DP_SPARE0), 1630 DEBUGFS_REG32(SOR_DP_SPARE1), 1631 DEBUGFS_REG32(SOR_DP_AUDIO_CTRL), 1632 DEBUGFS_REG32(SOR_DP_AUDIO_HBLANK_SYMBOLS), 1633 DEBUGFS_REG32(SOR_DP_AUDIO_VBLANK_SYMBOLS), 1634 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_HEADER), 1635 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK0), 1636 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK1), 1637 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK2), 1638 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK3), 1639 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK4), 1640 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK5), 1641 DEBUGFS_REG32(SOR_DP_GENERIC_INFOFRAME_SUBPACK6), 1642 DEBUGFS_REG32(SOR_DP_TPG), 1643 DEBUGFS_REG32(SOR_DP_TPG_CONFIG), 1644 DEBUGFS_REG32(SOR_DP_LQ_CSTM0), 1645 DEBUGFS_REG32(SOR_DP_LQ_CSTM1), 1646 DEBUGFS_REG32(SOR_DP_LQ_CSTM2), 1647 }; 1648 1649 static int tegra_sor_show_regs(struct seq_file *s, void *data) 1650 { 1651 struct drm_info_node *node = s->private; 1652 struct tegra_sor *sor = node->info_ent->data; 1653 struct drm_crtc *crtc = sor->output.encoder.crtc; 1654 struct drm_device *drm = node->minor->dev; 1655 unsigned int i; 1656 int err = 0; 1657 1658 drm_modeset_lock_all(drm); 1659 1660 if (!crtc || !crtc->state->active) { 1661 err = -EBUSY; 1662 goto unlock; 1663 } 1664 1665 for (i = 0; i < ARRAY_SIZE(tegra_sor_regs); i++) { 1666 unsigned int offset = tegra_sor_regs[i].offset; 1667 1668 seq_printf(s, "%-38s %#05x %08x\n", tegra_sor_regs[i].name, 1669 offset, tegra_sor_readl(sor, offset)); 1670 } 1671 1672 unlock: 1673 drm_modeset_unlock_all(drm); 1674 return err; 1675 } 1676 1677 static const struct drm_info_list debugfs_files[] = { 1678 { "crc", tegra_sor_show_crc, 0, NULL }, 1679 { "regs", tegra_sor_show_regs, 0, NULL }, 1680 }; 1681 1682 static int tegra_sor_late_register(struct drm_connector *connector) 1683 { 1684 struct tegra_output *output = connector_to_output(connector); 1685 unsigned int i, count = ARRAY_SIZE(debugfs_files); 1686 struct drm_minor *minor = connector->dev->primary; 1687 struct dentry *root = connector->debugfs_entry; 1688 struct tegra_sor *sor = to_sor(output); 1689 1690 sor->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files), 1691 GFP_KERNEL); 1692 if (!sor->debugfs_files) 1693 return -ENOMEM; 1694 1695 for (i = 0; i < count; i++) 1696 sor->debugfs_files[i].data = sor; 1697 1698 drm_debugfs_create_files(sor->debugfs_files, count, root, minor); 1699 1700 return 0; 1701 } 1702 1703 static void tegra_sor_early_unregister(struct drm_connector *connector) 1704 { 1705 struct tegra_output *output = connector_to_output(connector); 1706 unsigned int count = ARRAY_SIZE(debugfs_files); 1707 struct tegra_sor *sor = to_sor(output); 1708 1709 drm_debugfs_remove_files(sor->debugfs_files, count, 1710 connector->dev->primary); 1711 kfree(sor->debugfs_files); 1712 sor->debugfs_files = NULL; 1713 } 1714 1715 static void tegra_sor_connector_reset(struct drm_connector *connector) 1716 { 1717 struct tegra_sor_state *state; 1718 1719 state = kzalloc(sizeof(*state), GFP_KERNEL); 1720 if (!state) 1721 return; 1722 1723 if (connector->state) { 1724 __drm_atomic_helper_connector_destroy_state(connector->state); 1725 kfree(connector->state); 1726 } 1727 1728 __drm_atomic_helper_connector_reset(connector, &state->base); 1729 } 1730 1731 static enum drm_connector_status 1732 tegra_sor_connector_detect(struct drm_connector *connector, bool force) 1733 { 1734 struct tegra_output *output = connector_to_output(connector); 1735 struct tegra_sor *sor = to_sor(output); 1736 1737 if (sor->aux) 1738 return drm_dp_aux_detect(sor->aux); 1739 1740 return tegra_output_connector_detect(connector, force); 1741 } 1742 1743 static struct drm_connector_state * 1744 tegra_sor_connector_duplicate_state(struct drm_connector *connector) 1745 { 1746 struct tegra_sor_state *state = to_sor_state(connector->state); 1747 struct tegra_sor_state *copy; 1748 1749 copy = kmemdup(state, sizeof(*state), GFP_KERNEL); 1750 if (!copy) 1751 return NULL; 1752 1753 __drm_atomic_helper_connector_duplicate_state(connector, ©->base); 1754 1755 return ©->base; 1756 } 1757 1758 static const struct drm_connector_funcs tegra_sor_connector_funcs = { 1759 .reset = tegra_sor_connector_reset, 1760 .detect = tegra_sor_connector_detect, 1761 .fill_modes = drm_helper_probe_single_connector_modes, 1762 .destroy = tegra_output_connector_destroy, 1763 .atomic_duplicate_state = tegra_sor_connector_duplicate_state, 1764 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 1765 .late_register = tegra_sor_late_register, 1766 .early_unregister = tegra_sor_early_unregister, 1767 }; 1768 1769 static int tegra_sor_connector_get_modes(struct drm_connector *connector) 1770 { 1771 struct tegra_output *output = connector_to_output(connector); 1772 struct tegra_sor *sor = to_sor(output); 1773 int err; 1774 1775 if (sor->aux) 1776 drm_dp_aux_enable(sor->aux); 1777 1778 err = tegra_output_connector_get_modes(connector); 1779 1780 if (sor->aux) 1781 drm_dp_aux_disable(sor->aux); 1782 1783 return err; 1784 } 1785 1786 static enum drm_mode_status 1787 tegra_sor_connector_mode_valid(struct drm_connector *connector, 1788 struct drm_display_mode *mode) 1789 { 1790 return MODE_OK; 1791 } 1792 1793 static const struct drm_connector_helper_funcs tegra_sor_connector_helper_funcs = { 1794 .get_modes = tegra_sor_connector_get_modes, 1795 .mode_valid = tegra_sor_connector_mode_valid, 1796 }; 1797 1798 static int 1799 tegra_sor_encoder_atomic_check(struct drm_encoder *encoder, 1800 struct drm_crtc_state *crtc_state, 1801 struct drm_connector_state *conn_state) 1802 { 1803 struct tegra_output *output = encoder_to_output(encoder); 1804 struct tegra_sor_state *state = to_sor_state(conn_state); 1805 struct tegra_dc *dc = to_tegra_dc(conn_state->crtc); 1806 unsigned long pclk = crtc_state->mode.clock * 1000; 1807 struct tegra_sor *sor = to_sor(output); 1808 struct drm_display_info *info; 1809 int err; 1810 1811 info = &output->connector.display_info; 1812 1813 /* 1814 * For HBR2 modes, the SOR brick needs to use the x20 multiplier, so 1815 * the pixel clock must be corrected accordingly. 1816 */ 1817 if (pclk >= 340000000) { 1818 state->link_speed = 20; 1819 state->pclk = pclk / 2; 1820 } else { 1821 state->link_speed = 10; 1822 state->pclk = pclk; 1823 } 1824 1825 err = tegra_dc_state_setup_clock(dc, crtc_state, sor->clk_parent, 1826 pclk, 0); 1827 if (err < 0) { 1828 dev_err(output->dev, "failed to setup CRTC state: %d\n", err); 1829 return err; 1830 } 1831 1832 switch (info->bpc) { 1833 case 8: 1834 case 6: 1835 state->bpc = info->bpc; 1836 break; 1837 1838 default: 1839 DRM_DEBUG_KMS("%u bits-per-color not supported\n", info->bpc); 1840 state->bpc = 8; 1841 break; 1842 } 1843 1844 return 0; 1845 } 1846 1847 static inline u32 tegra_sor_hdmi_subpack(const u8 *ptr, size_t size) 1848 { 1849 u32 value = 0; 1850 size_t i; 1851 1852 for (i = size; i > 0; i--) 1853 value = (value << 8) | ptr[i - 1]; 1854 1855 return value; 1856 } 1857 1858 static void tegra_sor_hdmi_write_infopack(struct tegra_sor *sor, 1859 const void *data, size_t size) 1860 { 1861 const u8 *ptr = data; 1862 unsigned long offset; 1863 size_t i, j; 1864 u32 value; 1865 1866 switch (ptr[0]) { 1867 case HDMI_INFOFRAME_TYPE_AVI: 1868 offset = SOR_HDMI_AVI_INFOFRAME_HEADER; 1869 break; 1870 1871 case HDMI_INFOFRAME_TYPE_AUDIO: 1872 offset = SOR_HDMI_AUDIO_INFOFRAME_HEADER; 1873 break; 1874 1875 case HDMI_INFOFRAME_TYPE_VENDOR: 1876 offset = SOR_HDMI_VSI_INFOFRAME_HEADER; 1877 break; 1878 1879 default: 1880 dev_err(sor->dev, "unsupported infoframe type: %02x\n", 1881 ptr[0]); 1882 return; 1883 } 1884 1885 value = INFOFRAME_HEADER_TYPE(ptr[0]) | 1886 INFOFRAME_HEADER_VERSION(ptr[1]) | 1887 INFOFRAME_HEADER_LEN(ptr[2]); 1888 tegra_sor_writel(sor, value, offset); 1889 offset++; 1890 1891 /* 1892 * Each subpack contains 7 bytes, divided into: 1893 * - subpack_low: bytes 0 - 3 1894 * - subpack_high: bytes 4 - 6 (with byte 7 padded to 0x00) 1895 */ 1896 for (i = 3, j = 0; i < size; i += 7, j += 8) { 1897 size_t rem = size - i, num = min_t(size_t, rem, 4); 1898 1899 value = tegra_sor_hdmi_subpack(&ptr[i], num); 1900 tegra_sor_writel(sor, value, offset++); 1901 1902 num = min_t(size_t, rem - num, 3); 1903 1904 value = tegra_sor_hdmi_subpack(&ptr[i + 4], num); 1905 tegra_sor_writel(sor, value, offset++); 1906 } 1907 } 1908 1909 static int 1910 tegra_sor_hdmi_setup_avi_infoframe(struct tegra_sor *sor, 1911 const struct drm_display_mode *mode) 1912 { 1913 u8 buffer[HDMI_INFOFRAME_SIZE(AVI)]; 1914 struct hdmi_avi_infoframe frame; 1915 u32 value; 1916 int err; 1917 1918 /* disable AVI infoframe */ 1919 value = tegra_sor_readl(sor, SOR_HDMI_AVI_INFOFRAME_CTRL); 1920 value &= ~INFOFRAME_CTRL_SINGLE; 1921 value &= ~INFOFRAME_CTRL_OTHER; 1922 value &= ~INFOFRAME_CTRL_ENABLE; 1923 tegra_sor_writel(sor, value, SOR_HDMI_AVI_INFOFRAME_CTRL); 1924 1925 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, 1926 &sor->output.connector, mode); 1927 if (err < 0) { 1928 dev_err(sor->dev, "failed to setup AVI infoframe: %d\n", err); 1929 return err; 1930 } 1931 1932 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer)); 1933 if (err < 0) { 1934 dev_err(sor->dev, "failed to pack AVI infoframe: %d\n", err); 1935 return err; 1936 } 1937 1938 tegra_sor_hdmi_write_infopack(sor, buffer, err); 1939 1940 /* enable AVI infoframe */ 1941 value = tegra_sor_readl(sor, SOR_HDMI_AVI_INFOFRAME_CTRL); 1942 value |= INFOFRAME_CTRL_CHECKSUM_ENABLE; 1943 value |= INFOFRAME_CTRL_ENABLE; 1944 tegra_sor_writel(sor, value, SOR_HDMI_AVI_INFOFRAME_CTRL); 1945 1946 return 0; 1947 } 1948 1949 static void tegra_sor_write_eld(struct tegra_sor *sor) 1950 { 1951 size_t length = drm_eld_size(sor->output.connector.eld), i; 1952 1953 for (i = 0; i < length; i++) 1954 tegra_sor_writel(sor, i << 8 | sor->output.connector.eld[i], 1955 SOR_AUDIO_HDA_ELD_BUFWR); 1956 1957 /* 1958 * The HDA codec will always report an ELD buffer size of 96 bytes and 1959 * the HDA codec driver will check that each byte read from the buffer 1960 * is valid. Therefore every byte must be written, even if no 96 bytes 1961 * were parsed from EDID. 1962 */ 1963 for (i = length; i < 96; i++) 1964 tegra_sor_writel(sor, i << 8 | 0, SOR_AUDIO_HDA_ELD_BUFWR); 1965 } 1966 1967 static void tegra_sor_audio_prepare(struct tegra_sor *sor) 1968 { 1969 u32 value; 1970 1971 /* 1972 * Enable and unmask the HDA codec SCRATCH0 register interrupt. This 1973 * is used for interoperability between the HDA codec driver and the 1974 * HDMI/DP driver. 1975 */ 1976 value = SOR_INT_CODEC_SCRATCH1 | SOR_INT_CODEC_SCRATCH0; 1977 tegra_sor_writel(sor, value, SOR_INT_ENABLE); 1978 tegra_sor_writel(sor, value, SOR_INT_MASK); 1979 1980 tegra_sor_write_eld(sor); 1981 1982 value = SOR_AUDIO_HDA_PRESENSE_ELDV | SOR_AUDIO_HDA_PRESENSE_PD; 1983 tegra_sor_writel(sor, value, SOR_AUDIO_HDA_PRESENSE); 1984 } 1985 1986 static void tegra_sor_audio_unprepare(struct tegra_sor *sor) 1987 { 1988 tegra_sor_writel(sor, 0, SOR_AUDIO_HDA_PRESENSE); 1989 tegra_sor_writel(sor, 0, SOR_INT_MASK); 1990 tegra_sor_writel(sor, 0, SOR_INT_ENABLE); 1991 } 1992 1993 static void tegra_sor_audio_enable(struct tegra_sor *sor) 1994 { 1995 u32 value; 1996 1997 value = tegra_sor_readl(sor, SOR_AUDIO_CNTRL); 1998 1999 /* select HDA audio input */ 2000 value &= ~SOR_AUDIO_CNTRL_SOURCE_SELECT(SOURCE_SELECT_MASK); 2001 value |= SOR_AUDIO_CNTRL_SOURCE_SELECT(SOURCE_SELECT_HDA); 2002 2003 /* inject null samples */ 2004 if (sor->format.channels != 2) 2005 value &= ~SOR_AUDIO_CNTRL_INJECT_NULLSMPL; 2006 else 2007 value |= SOR_AUDIO_CNTRL_INJECT_NULLSMPL; 2008 2009 value |= SOR_AUDIO_CNTRL_AFIFO_FLUSH; 2010 2011 tegra_sor_writel(sor, value, SOR_AUDIO_CNTRL); 2012 2013 /* enable advertising HBR capability */ 2014 tegra_sor_writel(sor, SOR_AUDIO_SPARE_HBR_ENABLE, SOR_AUDIO_SPARE); 2015 } 2016 2017 static int tegra_sor_hdmi_enable_audio_infoframe(struct tegra_sor *sor) 2018 { 2019 u8 buffer[HDMI_INFOFRAME_SIZE(AUDIO)]; 2020 struct hdmi_audio_infoframe frame; 2021 u32 value; 2022 int err; 2023 2024 err = hdmi_audio_infoframe_init(&frame); 2025 if (err < 0) { 2026 dev_err(sor->dev, "failed to setup audio infoframe: %d\n", err); 2027 return err; 2028 } 2029 2030 frame.channels = sor->format.channels; 2031 2032 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); 2033 if (err < 0) { 2034 dev_err(sor->dev, "failed to pack audio infoframe: %d\n", err); 2035 return err; 2036 } 2037 2038 tegra_sor_hdmi_write_infopack(sor, buffer, err); 2039 2040 value = tegra_sor_readl(sor, SOR_HDMI_AUDIO_INFOFRAME_CTRL); 2041 value |= INFOFRAME_CTRL_CHECKSUM_ENABLE; 2042 value |= INFOFRAME_CTRL_ENABLE; 2043 tegra_sor_writel(sor, value, SOR_HDMI_AUDIO_INFOFRAME_CTRL); 2044 2045 return 0; 2046 } 2047 2048 static void tegra_sor_hdmi_audio_enable(struct tegra_sor *sor) 2049 { 2050 u32 value; 2051 2052 tegra_sor_audio_enable(sor); 2053 2054 tegra_sor_writel(sor, 0, SOR_HDMI_ACR_CTRL); 2055 2056 value = SOR_HDMI_SPARE_ACR_PRIORITY_HIGH | 2057 SOR_HDMI_SPARE_CTS_RESET(1) | 2058 SOR_HDMI_SPARE_HW_CTS_ENABLE; 2059 tegra_sor_writel(sor, value, SOR_HDMI_SPARE); 2060 2061 /* enable HW CTS */ 2062 value = SOR_HDMI_ACR_SUBPACK_LOW_SB1(0); 2063 tegra_sor_writel(sor, value, SOR_HDMI_ACR_0441_SUBPACK_LOW); 2064 2065 /* allow packet to be sent */ 2066 value = SOR_HDMI_ACR_SUBPACK_HIGH_ENABLE; 2067 tegra_sor_writel(sor, value, SOR_HDMI_ACR_0441_SUBPACK_HIGH); 2068 2069 /* reset N counter and enable lookup */ 2070 value = SOR_HDMI_AUDIO_N_RESET | SOR_HDMI_AUDIO_N_LOOKUP; 2071 tegra_sor_writel(sor, value, SOR_HDMI_AUDIO_N); 2072 2073 value = (24000 * 4096) / (128 * sor->format.sample_rate / 1000); 2074 tegra_sor_writel(sor, value, SOR_AUDIO_AVAL_0320); 2075 tegra_sor_writel(sor, 4096, SOR_AUDIO_NVAL_0320); 2076 2077 tegra_sor_writel(sor, 20000, SOR_AUDIO_AVAL_0441); 2078 tegra_sor_writel(sor, 4704, SOR_AUDIO_NVAL_0441); 2079 2080 tegra_sor_writel(sor, 20000, SOR_AUDIO_AVAL_0882); 2081 tegra_sor_writel(sor, 9408, SOR_AUDIO_NVAL_0882); 2082 2083 tegra_sor_writel(sor, 20000, SOR_AUDIO_AVAL_1764); 2084 tegra_sor_writel(sor, 18816, SOR_AUDIO_NVAL_1764); 2085 2086 value = (24000 * 6144) / (128 * sor->format.sample_rate / 1000); 2087 tegra_sor_writel(sor, value, SOR_AUDIO_AVAL_0480); 2088 tegra_sor_writel(sor, 6144, SOR_AUDIO_NVAL_0480); 2089 2090 value = (24000 * 12288) / (128 * sor->format.sample_rate / 1000); 2091 tegra_sor_writel(sor, value, SOR_AUDIO_AVAL_0960); 2092 tegra_sor_writel(sor, 12288, SOR_AUDIO_NVAL_0960); 2093 2094 value = (24000 * 24576) / (128 * sor->format.sample_rate / 1000); 2095 tegra_sor_writel(sor, value, SOR_AUDIO_AVAL_1920); 2096 tegra_sor_writel(sor, 24576, SOR_AUDIO_NVAL_1920); 2097 2098 value = tegra_sor_readl(sor, SOR_HDMI_AUDIO_N); 2099 value &= ~SOR_HDMI_AUDIO_N_RESET; 2100 tegra_sor_writel(sor, value, SOR_HDMI_AUDIO_N); 2101 2102 tegra_sor_hdmi_enable_audio_infoframe(sor); 2103 } 2104 2105 static void tegra_sor_hdmi_disable_audio_infoframe(struct tegra_sor *sor) 2106 { 2107 u32 value; 2108 2109 value = tegra_sor_readl(sor, SOR_HDMI_AUDIO_INFOFRAME_CTRL); 2110 value &= ~INFOFRAME_CTRL_ENABLE; 2111 tegra_sor_writel(sor, value, SOR_HDMI_AUDIO_INFOFRAME_CTRL); 2112 } 2113 2114 static void tegra_sor_hdmi_audio_disable(struct tegra_sor *sor) 2115 { 2116 tegra_sor_hdmi_disable_audio_infoframe(sor); 2117 } 2118 2119 static struct tegra_sor_hdmi_settings * 2120 tegra_sor_hdmi_find_settings(struct tegra_sor *sor, unsigned long frequency) 2121 { 2122 unsigned int i; 2123 2124 for (i = 0; i < sor->num_settings; i++) 2125 if (frequency <= sor->settings[i].frequency) 2126 return &sor->settings[i]; 2127 2128 return NULL; 2129 } 2130 2131 static void tegra_sor_hdmi_disable_scrambling(struct tegra_sor *sor) 2132 { 2133 u32 value; 2134 2135 value = tegra_sor_readl(sor, SOR_HDMI2_CTRL); 2136 value &= ~SOR_HDMI2_CTRL_CLOCK_MODE_DIV_BY_4; 2137 value &= ~SOR_HDMI2_CTRL_SCRAMBLE; 2138 tegra_sor_writel(sor, value, SOR_HDMI2_CTRL); 2139 } 2140 2141 static void tegra_sor_hdmi_scdc_disable(struct tegra_sor *sor) 2142 { 2143 struct i2c_adapter *ddc = sor->output.ddc; 2144 2145 drm_scdc_set_high_tmds_clock_ratio(ddc, false); 2146 drm_scdc_set_scrambling(ddc, false); 2147 2148 tegra_sor_hdmi_disable_scrambling(sor); 2149 } 2150 2151 static void tegra_sor_hdmi_scdc_stop(struct tegra_sor *sor) 2152 { 2153 if (sor->scdc_enabled) { 2154 cancel_delayed_work_sync(&sor->scdc); 2155 tegra_sor_hdmi_scdc_disable(sor); 2156 } 2157 } 2158 2159 static void tegra_sor_hdmi_enable_scrambling(struct tegra_sor *sor) 2160 { 2161 u32 value; 2162 2163 value = tegra_sor_readl(sor, SOR_HDMI2_CTRL); 2164 value |= SOR_HDMI2_CTRL_CLOCK_MODE_DIV_BY_4; 2165 value |= SOR_HDMI2_CTRL_SCRAMBLE; 2166 tegra_sor_writel(sor, value, SOR_HDMI2_CTRL); 2167 } 2168 2169 static void tegra_sor_hdmi_scdc_enable(struct tegra_sor *sor) 2170 { 2171 struct i2c_adapter *ddc = sor->output.ddc; 2172 2173 drm_scdc_set_high_tmds_clock_ratio(ddc, true); 2174 drm_scdc_set_scrambling(ddc, true); 2175 2176 tegra_sor_hdmi_enable_scrambling(sor); 2177 } 2178 2179 static void tegra_sor_hdmi_scdc_work(struct work_struct *work) 2180 { 2181 struct tegra_sor *sor = container_of(work, struct tegra_sor, scdc.work); 2182 struct i2c_adapter *ddc = sor->output.ddc; 2183 2184 if (!drm_scdc_get_scrambling_status(ddc)) { 2185 DRM_DEBUG_KMS("SCDC not scrambled\n"); 2186 tegra_sor_hdmi_scdc_enable(sor); 2187 } 2188 2189 schedule_delayed_work(&sor->scdc, msecs_to_jiffies(5000)); 2190 } 2191 2192 static void tegra_sor_hdmi_scdc_start(struct tegra_sor *sor) 2193 { 2194 struct drm_scdc *scdc = &sor->output.connector.display_info.hdmi.scdc; 2195 struct drm_display_mode *mode; 2196 2197 mode = &sor->output.encoder.crtc->state->adjusted_mode; 2198 2199 if (mode->clock >= 340000 && scdc->supported) { 2200 schedule_delayed_work(&sor->scdc, msecs_to_jiffies(5000)); 2201 tegra_sor_hdmi_scdc_enable(sor); 2202 sor->scdc_enabled = true; 2203 } 2204 } 2205 2206 static void tegra_sor_hdmi_disable(struct drm_encoder *encoder) 2207 { 2208 struct tegra_output *output = encoder_to_output(encoder); 2209 struct tegra_dc *dc = to_tegra_dc(encoder->crtc); 2210 struct tegra_sor *sor = to_sor(output); 2211 u32 value; 2212 int err; 2213 2214 tegra_sor_audio_unprepare(sor); 2215 tegra_sor_hdmi_scdc_stop(sor); 2216 2217 err = tegra_sor_detach(sor); 2218 if (err < 0) 2219 dev_err(sor->dev, "failed to detach SOR: %d\n", err); 2220 2221 tegra_sor_writel(sor, 0, SOR_STATE1); 2222 tegra_sor_update(sor); 2223 2224 /* disable display to SOR clock */ 2225 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); 2226 2227 if (!sor->soc->has_nvdisplay) 2228 value &= ~SOR1_TIMING_CYA; 2229 2230 value &= ~SOR_ENABLE(sor->index); 2231 2232 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); 2233 2234 tegra_dc_commit(dc); 2235 2236 err = tegra_sor_power_down(sor); 2237 if (err < 0) 2238 dev_err(sor->dev, "failed to power down SOR: %d\n", err); 2239 2240 err = tegra_io_pad_power_disable(sor->pad); 2241 if (err < 0) 2242 dev_err(sor->dev, "failed to power off I/O pad: %d\n", err); 2243 2244 host1x_client_suspend(&sor->client); 2245 } 2246 2247 static void tegra_sor_hdmi_enable(struct drm_encoder *encoder) 2248 { 2249 struct tegra_output *output = encoder_to_output(encoder); 2250 unsigned int h_ref_to_sync = 1, pulse_start, max_ac; 2251 struct tegra_dc *dc = to_tegra_dc(encoder->crtc); 2252 struct tegra_sor_hdmi_settings *settings; 2253 struct tegra_sor *sor = to_sor(output); 2254 struct tegra_sor_state *state; 2255 struct drm_display_mode *mode; 2256 unsigned long rate, pclk; 2257 unsigned int div, i; 2258 u32 value; 2259 int err; 2260 2261 state = to_sor_state(output->connector.state); 2262 mode = &encoder->crtc->state->adjusted_mode; 2263 pclk = mode->clock * 1000; 2264 2265 err = host1x_client_resume(&sor->client); 2266 if (err < 0) { 2267 dev_err(sor->dev, "failed to resume: %d\n", err); 2268 return; 2269 } 2270 2271 /* switch to safe parent clock */ 2272 err = tegra_sor_set_parent_clock(sor, sor->clk_safe); 2273 if (err < 0) { 2274 dev_err(sor->dev, "failed to set safe parent clock: %d\n", err); 2275 return; 2276 } 2277 2278 div = clk_get_rate(sor->clk) / 1000000 * 4; 2279 2280 err = tegra_io_pad_power_enable(sor->pad); 2281 if (err < 0) 2282 dev_err(sor->dev, "failed to power on I/O pad: %d\n", err); 2283 2284 usleep_range(20, 100); 2285 2286 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2287 value &= ~SOR_PLL2_BANDGAP_POWERDOWN; 2288 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2289 2290 usleep_range(20, 100); 2291 2292 value = tegra_sor_readl(sor, sor->soc->regs->pll3); 2293 value &= ~SOR_PLL3_PLL_VDD_MODE_3V3; 2294 tegra_sor_writel(sor, value, sor->soc->regs->pll3); 2295 2296 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 2297 value &= ~SOR_PLL0_VCOPD; 2298 value &= ~SOR_PLL0_PWR; 2299 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 2300 2301 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2302 value &= ~SOR_PLL2_SEQ_PLLCAPPD_ENFORCE; 2303 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2304 2305 usleep_range(200, 400); 2306 2307 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2308 value &= ~SOR_PLL2_POWERDOWN_OVERRIDE; 2309 value &= ~SOR_PLL2_PORT_POWERDOWN; 2310 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2311 2312 usleep_range(20, 100); 2313 2314 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 2315 value |= SOR_DP_PADCTL_PD_TXD_3 | SOR_DP_PADCTL_PD_TXD_0 | 2316 SOR_DP_PADCTL_PD_TXD_1 | SOR_DP_PADCTL_PD_TXD_2; 2317 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 2318 2319 while (true) { 2320 value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL); 2321 if ((value & SOR_LANE_SEQ_CTL_STATE_BUSY) == 0) 2322 break; 2323 2324 usleep_range(250, 1000); 2325 } 2326 2327 value = SOR_LANE_SEQ_CTL_TRIGGER | SOR_LANE_SEQ_CTL_SEQUENCE_DOWN | 2328 SOR_LANE_SEQ_CTL_POWER_STATE_UP | SOR_LANE_SEQ_CTL_DELAY(5); 2329 tegra_sor_writel(sor, value, SOR_LANE_SEQ_CTL); 2330 2331 while (true) { 2332 value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL); 2333 if ((value & SOR_LANE_SEQ_CTL_TRIGGER) == 0) 2334 break; 2335 2336 usleep_range(250, 1000); 2337 } 2338 2339 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 2340 value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK; 2341 value &= ~SOR_CLK_CNTRL_DP_CLK_SEL_MASK; 2342 2343 if (mode->clock < 340000) { 2344 DRM_DEBUG_KMS("setting 2.7 GHz link speed\n"); 2345 value |= SOR_CLK_CNTRL_DP_LINK_SPEED_G2_70; 2346 } else { 2347 DRM_DEBUG_KMS("setting 5.4 GHz link speed\n"); 2348 value |= SOR_CLK_CNTRL_DP_LINK_SPEED_G5_40; 2349 } 2350 2351 value |= SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_PCLK; 2352 tegra_sor_writel(sor, value, SOR_CLK_CNTRL); 2353 2354 /* SOR pad PLL stabilization time */ 2355 usleep_range(250, 1000); 2356 2357 value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); 2358 value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK; 2359 value |= SOR_DP_LINKCTL_LANE_COUNT(4); 2360 tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); 2361 2362 value = tegra_sor_readl(sor, SOR_DP_SPARE0); 2363 value &= ~SOR_DP_SPARE_DISP_VIDEO_PREAMBLE; 2364 value &= ~SOR_DP_SPARE_PANEL_INTERNAL; 2365 value &= ~SOR_DP_SPARE_SEQ_ENABLE; 2366 value &= ~SOR_DP_SPARE_MACRO_SOR_CLK; 2367 tegra_sor_writel(sor, value, SOR_DP_SPARE0); 2368 2369 value = SOR_SEQ_CTL_PU_PC(0) | SOR_SEQ_CTL_PU_PC_ALT(0) | 2370 SOR_SEQ_CTL_PD_PC(8) | SOR_SEQ_CTL_PD_PC_ALT(8); 2371 tegra_sor_writel(sor, value, SOR_SEQ_CTL); 2372 2373 value = SOR_SEQ_INST_DRIVE_PWM_OUT_LO | SOR_SEQ_INST_HALT | 2374 SOR_SEQ_INST_WAIT_VSYNC | SOR_SEQ_INST_WAIT(1); 2375 tegra_sor_writel(sor, value, SOR_SEQ_INST(0)); 2376 tegra_sor_writel(sor, value, SOR_SEQ_INST(8)); 2377 2378 if (!sor->soc->has_nvdisplay) { 2379 /* program the reference clock */ 2380 value = SOR_REFCLK_DIV_INT(div) | SOR_REFCLK_DIV_FRAC(div); 2381 tegra_sor_writel(sor, value, SOR_REFCLK); 2382 } 2383 2384 /* XXX not in TRM */ 2385 for (value = 0, i = 0; i < 5; i++) 2386 value |= SOR_XBAR_CTRL_LINK0_XSEL(i, sor->xbar_cfg[i]) | 2387 SOR_XBAR_CTRL_LINK1_XSEL(i, i); 2388 2389 tegra_sor_writel(sor, 0x00000000, SOR_XBAR_POL); 2390 tegra_sor_writel(sor, value, SOR_XBAR_CTRL); 2391 2392 /* 2393 * Switch the pad clock to the DP clock. Note that we cannot actually 2394 * do this because Tegra186 and later don't support clk_set_parent() 2395 * on the sorX_pad_clkout clocks. We already do the equivalent above 2396 * using the DP_CLK_SEL mux of the SOR_CLK_CNTRL register. 2397 */ 2398 #if 0 2399 err = clk_set_parent(sor->clk_pad, sor->clk_dp); 2400 if (err < 0) { 2401 dev_err(sor->dev, "failed to select pad parent clock: %d\n", 2402 err); 2403 return; 2404 } 2405 #endif 2406 2407 /* switch the SOR clock to the pad clock */ 2408 err = tegra_sor_set_parent_clock(sor, sor->clk_pad); 2409 if (err < 0) { 2410 dev_err(sor->dev, "failed to select SOR parent clock: %d\n", 2411 err); 2412 return; 2413 } 2414 2415 /* switch the output clock to the parent pixel clock */ 2416 err = clk_set_parent(sor->clk, sor->clk_parent); 2417 if (err < 0) { 2418 dev_err(sor->dev, "failed to select output parent clock: %d\n", 2419 err); 2420 return; 2421 } 2422 2423 /* adjust clock rate for HDMI 2.0 modes */ 2424 rate = clk_get_rate(sor->clk_parent); 2425 2426 if (mode->clock >= 340000) 2427 rate /= 2; 2428 2429 DRM_DEBUG_KMS("setting clock to %lu Hz, mode: %lu Hz\n", rate, pclk); 2430 2431 clk_set_rate(sor->clk, rate); 2432 2433 if (!sor->soc->has_nvdisplay) { 2434 value = SOR_INPUT_CONTROL_HDMI_SRC_SELECT(dc->pipe); 2435 2436 /* XXX is this the proper check? */ 2437 if (mode->clock < 75000) 2438 value |= SOR_INPUT_CONTROL_ARM_VIDEO_RANGE_LIMITED; 2439 2440 tegra_sor_writel(sor, value, SOR_INPUT_CONTROL); 2441 } 2442 2443 max_ac = ((mode->htotal - mode->hdisplay) - SOR_REKEY - 18) / 32; 2444 2445 value = SOR_HDMI_CTRL_ENABLE | SOR_HDMI_CTRL_MAX_AC_PACKET(max_ac) | 2446 SOR_HDMI_CTRL_AUDIO_LAYOUT | SOR_HDMI_CTRL_REKEY(SOR_REKEY); 2447 tegra_sor_writel(sor, value, SOR_HDMI_CTRL); 2448 2449 if (!dc->soc->has_nvdisplay) { 2450 /* H_PULSE2 setup */ 2451 pulse_start = h_ref_to_sync + 2452 (mode->hsync_end - mode->hsync_start) + 2453 (mode->htotal - mode->hsync_end) - 10; 2454 2455 value = PULSE_LAST_END_A | PULSE_QUAL_VACTIVE | 2456 PULSE_POLARITY_HIGH | PULSE_MODE_NORMAL; 2457 tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_CONTROL); 2458 2459 value = PULSE_END(pulse_start + 8) | PULSE_START(pulse_start); 2460 tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_POSITION_A); 2461 2462 value = tegra_dc_readl(dc, DC_DISP_DISP_SIGNAL_OPTIONS0); 2463 value |= H_PULSE2_ENABLE; 2464 tegra_dc_writel(dc, value, DC_DISP_DISP_SIGNAL_OPTIONS0); 2465 } 2466 2467 /* infoframe setup */ 2468 err = tegra_sor_hdmi_setup_avi_infoframe(sor, mode); 2469 if (err < 0) 2470 dev_err(sor->dev, "failed to setup AVI infoframe: %d\n", err); 2471 2472 /* XXX HDMI audio support not implemented yet */ 2473 tegra_sor_hdmi_disable_audio_infoframe(sor); 2474 2475 /* use single TMDS protocol */ 2476 value = tegra_sor_readl(sor, SOR_STATE1); 2477 value &= ~SOR_STATE_ASY_PROTOCOL_MASK; 2478 value |= SOR_STATE_ASY_PROTOCOL_SINGLE_TMDS_A; 2479 tegra_sor_writel(sor, value, SOR_STATE1); 2480 2481 /* power up pad calibration */ 2482 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 2483 value &= ~SOR_DP_PADCTL_PAD_CAL_PD; 2484 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 2485 2486 /* production settings */ 2487 settings = tegra_sor_hdmi_find_settings(sor, mode->clock * 1000); 2488 if (!settings) { 2489 dev_err(sor->dev, "no settings for pixel clock %d Hz\n", 2490 mode->clock * 1000); 2491 return; 2492 } 2493 2494 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 2495 value &= ~SOR_PLL0_ICHPMP_MASK; 2496 value &= ~SOR_PLL0_FILTER_MASK; 2497 value &= ~SOR_PLL0_VCOCAP_MASK; 2498 value |= SOR_PLL0_ICHPMP(settings->ichpmp); 2499 value |= SOR_PLL0_FILTER(settings->filter); 2500 value |= SOR_PLL0_VCOCAP(settings->vcocap); 2501 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 2502 2503 /* XXX not in TRM */ 2504 value = tegra_sor_readl(sor, sor->soc->regs->pll1); 2505 value &= ~SOR_PLL1_LOADADJ_MASK; 2506 value &= ~SOR_PLL1_TMDS_TERMADJ_MASK; 2507 value |= SOR_PLL1_LOADADJ(settings->loadadj); 2508 value |= SOR_PLL1_TMDS_TERMADJ(settings->tmds_termadj); 2509 value |= SOR_PLL1_TMDS_TERM; 2510 tegra_sor_writel(sor, value, sor->soc->regs->pll1); 2511 2512 value = tegra_sor_readl(sor, sor->soc->regs->pll3); 2513 value &= ~SOR_PLL3_BG_TEMP_COEF_MASK; 2514 value &= ~SOR_PLL3_BG_VREF_LEVEL_MASK; 2515 value &= ~SOR_PLL3_AVDD10_LEVEL_MASK; 2516 value &= ~SOR_PLL3_AVDD14_LEVEL_MASK; 2517 value |= SOR_PLL3_BG_TEMP_COEF(settings->bg_temp_coef); 2518 value |= SOR_PLL3_BG_VREF_LEVEL(settings->bg_vref_level); 2519 value |= SOR_PLL3_AVDD10_LEVEL(settings->avdd10_level); 2520 value |= SOR_PLL3_AVDD14_LEVEL(settings->avdd14_level); 2521 tegra_sor_writel(sor, value, sor->soc->regs->pll3); 2522 2523 value = settings->drive_current[3] << 24 | 2524 settings->drive_current[2] << 16 | 2525 settings->drive_current[1] << 8 | 2526 settings->drive_current[0] << 0; 2527 tegra_sor_writel(sor, value, SOR_LANE_DRIVE_CURRENT0); 2528 2529 value = settings->preemphasis[3] << 24 | 2530 settings->preemphasis[2] << 16 | 2531 settings->preemphasis[1] << 8 | 2532 settings->preemphasis[0] << 0; 2533 tegra_sor_writel(sor, value, SOR_LANE_PREEMPHASIS0); 2534 2535 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 2536 value &= ~SOR_DP_PADCTL_TX_PU_MASK; 2537 value |= SOR_DP_PADCTL_TX_PU_ENABLE; 2538 value |= SOR_DP_PADCTL_TX_PU(settings->tx_pu_value); 2539 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 2540 2541 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl2); 2542 value &= ~SOR_DP_PADCTL_SPAREPLL_MASK; 2543 value |= SOR_DP_PADCTL_SPAREPLL(settings->sparepll); 2544 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl2); 2545 2546 /* power down pad calibration */ 2547 value = tegra_sor_readl(sor, sor->soc->regs->dp_padctl0); 2548 value |= SOR_DP_PADCTL_PAD_CAL_PD; 2549 tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0); 2550 2551 if (!dc->soc->has_nvdisplay) { 2552 /* miscellaneous display controller settings */ 2553 value = VSYNC_H_POSITION(1); 2554 tegra_dc_writel(dc, value, DC_DISP_DISP_TIMING_OPTIONS); 2555 } 2556 2557 value = tegra_dc_readl(dc, DC_DISP_DISP_COLOR_CONTROL); 2558 value &= ~DITHER_CONTROL_MASK; 2559 value &= ~BASE_COLOR_SIZE_MASK; 2560 2561 switch (state->bpc) { 2562 case 6: 2563 value |= BASE_COLOR_SIZE_666; 2564 break; 2565 2566 case 8: 2567 value |= BASE_COLOR_SIZE_888; 2568 break; 2569 2570 case 10: 2571 value |= BASE_COLOR_SIZE_101010; 2572 break; 2573 2574 case 12: 2575 value |= BASE_COLOR_SIZE_121212; 2576 break; 2577 2578 default: 2579 WARN(1, "%u bits-per-color not supported\n", state->bpc); 2580 value |= BASE_COLOR_SIZE_888; 2581 break; 2582 } 2583 2584 tegra_dc_writel(dc, value, DC_DISP_DISP_COLOR_CONTROL); 2585 2586 /* XXX set display head owner */ 2587 value = tegra_sor_readl(sor, SOR_STATE1); 2588 value &= ~SOR_STATE_ASY_OWNER_MASK; 2589 value |= SOR_STATE_ASY_OWNER(1 + dc->pipe); 2590 tegra_sor_writel(sor, value, SOR_STATE1); 2591 2592 err = tegra_sor_power_up(sor, 250); 2593 if (err < 0) 2594 dev_err(sor->dev, "failed to power up SOR: %d\n", err); 2595 2596 /* configure dynamic range of output */ 2597 value = tegra_sor_readl(sor, sor->soc->regs->head_state0 + dc->pipe); 2598 value &= ~SOR_HEAD_STATE_RANGECOMPRESS_MASK; 2599 value &= ~SOR_HEAD_STATE_DYNRANGE_MASK; 2600 tegra_sor_writel(sor, value, sor->soc->regs->head_state0 + dc->pipe); 2601 2602 /* configure colorspace */ 2603 value = tegra_sor_readl(sor, sor->soc->regs->head_state0 + dc->pipe); 2604 value &= ~SOR_HEAD_STATE_COLORSPACE_MASK; 2605 value |= SOR_HEAD_STATE_COLORSPACE_RGB; 2606 tegra_sor_writel(sor, value, sor->soc->regs->head_state0 + dc->pipe); 2607 2608 tegra_sor_mode_set(sor, mode, state); 2609 2610 tegra_sor_update(sor); 2611 2612 /* program preamble timing in SOR (XXX) */ 2613 value = tegra_sor_readl(sor, SOR_DP_SPARE0); 2614 value &= ~SOR_DP_SPARE_DISP_VIDEO_PREAMBLE; 2615 tegra_sor_writel(sor, value, SOR_DP_SPARE0); 2616 2617 err = tegra_sor_attach(sor); 2618 if (err < 0) 2619 dev_err(sor->dev, "failed to attach SOR: %d\n", err); 2620 2621 /* enable display to SOR clock and generate HDMI preamble */ 2622 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); 2623 2624 if (!sor->soc->has_nvdisplay) 2625 value |= SOR1_TIMING_CYA; 2626 2627 value |= SOR_ENABLE(sor->index); 2628 2629 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); 2630 2631 if (dc->soc->has_nvdisplay) { 2632 value = tegra_dc_readl(dc, DC_DISP_CORE_SOR_SET_CONTROL(sor->index)); 2633 value &= ~PROTOCOL_MASK; 2634 value |= PROTOCOL_SINGLE_TMDS_A; 2635 tegra_dc_writel(dc, value, DC_DISP_CORE_SOR_SET_CONTROL(sor->index)); 2636 } 2637 2638 tegra_dc_commit(dc); 2639 2640 err = tegra_sor_wakeup(sor); 2641 if (err < 0) 2642 dev_err(sor->dev, "failed to wakeup SOR: %d\n", err); 2643 2644 tegra_sor_hdmi_scdc_start(sor); 2645 tegra_sor_audio_prepare(sor); 2646 } 2647 2648 static const struct drm_encoder_helper_funcs tegra_sor_hdmi_helpers = { 2649 .disable = tegra_sor_hdmi_disable, 2650 .enable = tegra_sor_hdmi_enable, 2651 .atomic_check = tegra_sor_encoder_atomic_check, 2652 }; 2653 2654 static void tegra_sor_dp_disable(struct drm_encoder *encoder) 2655 { 2656 struct tegra_output *output = encoder_to_output(encoder); 2657 struct tegra_dc *dc = to_tegra_dc(encoder->crtc); 2658 struct tegra_sor *sor = to_sor(output); 2659 u32 value; 2660 int err; 2661 2662 if (output->panel) 2663 drm_panel_disable(output->panel); 2664 2665 /* 2666 * Do not attempt to power down a DP link if we're not connected since 2667 * the AUX transactions would just be timing out. 2668 */ 2669 if (output->connector.status != connector_status_disconnected) { 2670 err = drm_dp_link_power_down(sor->aux, &sor->link); 2671 if (err < 0) 2672 dev_err(sor->dev, "failed to power down link: %d\n", 2673 err); 2674 } 2675 2676 err = tegra_sor_detach(sor); 2677 if (err < 0) 2678 dev_err(sor->dev, "failed to detach SOR: %d\n", err); 2679 2680 tegra_sor_writel(sor, 0, SOR_STATE1); 2681 tegra_sor_update(sor); 2682 2683 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); 2684 value &= ~SOR_ENABLE(sor->index); 2685 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); 2686 tegra_dc_commit(dc); 2687 2688 value = tegra_sor_readl(sor, SOR_STATE1); 2689 value &= ~SOR_STATE_ASY_PROTOCOL_MASK; 2690 value &= ~SOR_STATE_ASY_SUBOWNER_MASK; 2691 value &= ~SOR_STATE_ASY_OWNER_MASK; 2692 tegra_sor_writel(sor, value, SOR_STATE1); 2693 tegra_sor_update(sor); 2694 2695 /* switch to safe parent clock */ 2696 err = tegra_sor_set_parent_clock(sor, sor->clk_safe); 2697 if (err < 0) 2698 dev_err(sor->dev, "failed to set safe clock: %d\n", err); 2699 2700 err = tegra_sor_power_down(sor); 2701 if (err < 0) 2702 dev_err(sor->dev, "failed to power down SOR: %d\n", err); 2703 2704 err = tegra_io_pad_power_disable(sor->pad); 2705 if (err < 0) 2706 dev_err(sor->dev, "failed to power off I/O pad: %d\n", err); 2707 2708 err = drm_dp_aux_disable(sor->aux); 2709 if (err < 0) 2710 dev_err(sor->dev, "failed disable DPAUX: %d\n", err); 2711 2712 if (output->panel) 2713 drm_panel_unprepare(output->panel); 2714 2715 host1x_client_suspend(&sor->client); 2716 } 2717 2718 static void tegra_sor_dp_enable(struct drm_encoder *encoder) 2719 { 2720 struct tegra_output *output = encoder_to_output(encoder); 2721 struct tegra_dc *dc = to_tegra_dc(encoder->crtc); 2722 struct tegra_sor *sor = to_sor(output); 2723 struct tegra_sor_config config; 2724 struct tegra_sor_state *state; 2725 struct drm_display_mode *mode; 2726 struct drm_display_info *info; 2727 unsigned int i; 2728 u32 value; 2729 int err; 2730 2731 state = to_sor_state(output->connector.state); 2732 mode = &encoder->crtc->state->adjusted_mode; 2733 info = &output->connector.display_info; 2734 2735 err = host1x_client_resume(&sor->client); 2736 if (err < 0) { 2737 dev_err(sor->dev, "failed to resume: %d\n", err); 2738 return; 2739 } 2740 2741 /* switch to safe parent clock */ 2742 err = tegra_sor_set_parent_clock(sor, sor->clk_safe); 2743 if (err < 0) 2744 dev_err(sor->dev, "failed to set safe parent clock: %d\n", err); 2745 2746 err = tegra_io_pad_power_enable(sor->pad); 2747 if (err < 0) 2748 dev_err(sor->dev, "failed to power on LVDS rail: %d\n", err); 2749 2750 usleep_range(20, 100); 2751 2752 err = drm_dp_aux_enable(sor->aux); 2753 if (err < 0) 2754 dev_err(sor->dev, "failed to enable DPAUX: %d\n", err); 2755 2756 err = drm_dp_link_probe(sor->aux, &sor->link); 2757 if (err < 0) 2758 dev_err(sor->dev, "failed to probe DP link: %d\n", err); 2759 2760 tegra_sor_filter_rates(sor); 2761 2762 err = drm_dp_link_choose(&sor->link, mode, info); 2763 if (err < 0) 2764 dev_err(sor->dev, "failed to choose link: %d\n", err); 2765 2766 if (output->panel) 2767 drm_panel_prepare(output->panel); 2768 2769 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2770 value &= ~SOR_PLL2_BANDGAP_POWERDOWN; 2771 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2772 2773 usleep_range(20, 40); 2774 2775 value = tegra_sor_readl(sor, sor->soc->regs->pll3); 2776 value |= SOR_PLL3_PLL_VDD_MODE_3V3; 2777 tegra_sor_writel(sor, value, sor->soc->regs->pll3); 2778 2779 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 2780 value &= ~(SOR_PLL0_VCOPD | SOR_PLL0_PWR); 2781 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 2782 2783 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2784 value &= ~SOR_PLL2_SEQ_PLLCAPPD_ENFORCE; 2785 value |= SOR_PLL2_SEQ_PLLCAPPD; 2786 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2787 2788 usleep_range(200, 400); 2789 2790 value = tegra_sor_readl(sor, sor->soc->regs->pll2); 2791 value &= ~SOR_PLL2_POWERDOWN_OVERRIDE; 2792 value &= ~SOR_PLL2_PORT_POWERDOWN; 2793 tegra_sor_writel(sor, value, sor->soc->regs->pll2); 2794 2795 value = tegra_sor_readl(sor, SOR_CLK_CNTRL); 2796 value &= ~SOR_CLK_CNTRL_DP_CLK_SEL_MASK; 2797 2798 if (output->panel) 2799 value |= SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK; 2800 else 2801 value |= SOR_CLK_CNTRL_DP_CLK_SEL_DIFF_DPCLK; 2802 2803 tegra_sor_writel(sor, value, SOR_CLK_CNTRL); 2804 2805 usleep_range(200, 400); 2806 2807 value = tegra_sor_readl(sor, SOR_DP_SPARE0); 2808 /* XXX not in TRM */ 2809 if (output->panel) 2810 value |= SOR_DP_SPARE_PANEL_INTERNAL; 2811 else 2812 value &= ~SOR_DP_SPARE_PANEL_INTERNAL; 2813 2814 value |= SOR_DP_SPARE_SEQ_ENABLE; 2815 tegra_sor_writel(sor, value, SOR_DP_SPARE0); 2816 2817 /* XXX not in TRM */ 2818 tegra_sor_writel(sor, 0, SOR_LVDS); 2819 2820 value = tegra_sor_readl(sor, sor->soc->regs->pll0); 2821 value &= ~SOR_PLL0_ICHPMP_MASK; 2822 value &= ~SOR_PLL0_VCOCAP_MASK; 2823 value |= SOR_PLL0_ICHPMP(0x1); 2824 value |= SOR_PLL0_VCOCAP(0x3); 2825 value |= SOR_PLL0_RESISTOR_EXT; 2826 tegra_sor_writel(sor, value, sor->soc->regs->pll0); 2827 2828 /* XXX not in TRM */ 2829 for (value = 0, i = 0; i < 5; i++) 2830 value |= SOR_XBAR_CTRL_LINK0_XSEL(i, sor->soc->xbar_cfg[i]) | 2831 SOR_XBAR_CTRL_LINK1_XSEL(i, i); 2832 2833 tegra_sor_writel(sor, 0x00000000, SOR_XBAR_POL); 2834 tegra_sor_writel(sor, value, SOR_XBAR_CTRL); 2835 2836 /* 2837 * Switch the pad clock to the DP clock. Note that we cannot actually 2838 * do this because Tegra186 and later don't support clk_set_parent() 2839 * on the sorX_pad_clkout clocks. We already do the equivalent above 2840 * using the DP_CLK_SEL mux of the SOR_CLK_CNTRL register. 2841 */ 2842 #if 0 2843 err = clk_set_parent(sor->clk_pad, sor->clk_parent); 2844 if (err < 0) { 2845 dev_err(sor->dev, "failed to select pad parent clock: %d\n", 2846 err); 2847 return; 2848 } 2849 #endif 2850 2851 /* switch the SOR clock to the pad clock */ 2852 err = tegra_sor_set_parent_clock(sor, sor->clk_pad); 2853 if (err < 0) { 2854 dev_err(sor->dev, "failed to select SOR parent clock: %d\n", 2855 err); 2856 return; 2857 } 2858 2859 /* switch the output clock to the parent pixel clock */ 2860 err = clk_set_parent(sor->clk, sor->clk_parent); 2861 if (err < 0) { 2862 dev_err(sor->dev, "failed to select output parent clock: %d\n", 2863 err); 2864 return; 2865 } 2866 2867 /* use DP-A protocol */ 2868 value = tegra_sor_readl(sor, SOR_STATE1); 2869 value &= ~SOR_STATE_ASY_PROTOCOL_MASK; 2870 value |= SOR_STATE_ASY_PROTOCOL_DP_A; 2871 tegra_sor_writel(sor, value, SOR_STATE1); 2872 2873 /* enable port */ 2874 value = tegra_sor_readl(sor, SOR_DP_LINKCTL0); 2875 value |= SOR_DP_LINKCTL_ENABLE; 2876 tegra_sor_writel(sor, value, SOR_DP_LINKCTL0); 2877 2878 tegra_sor_dp_term_calibrate(sor); 2879 2880 err = drm_dp_link_train(&sor->link); 2881 if (err < 0) 2882 dev_err(sor->dev, "link training failed: %d\n", err); 2883 else 2884 dev_dbg(sor->dev, "link training succeeded\n"); 2885 2886 err = drm_dp_link_power_up(sor->aux, &sor->link); 2887 if (err < 0) 2888 dev_err(sor->dev, "failed to power up DP link: %d\n", err); 2889 2890 /* compute configuration */ 2891 memset(&config, 0, sizeof(config)); 2892 config.bits_per_pixel = state->bpc * 3; 2893 2894 err = tegra_sor_compute_config(sor, mode, &config, &sor->link); 2895 if (err < 0) 2896 dev_err(sor->dev, "failed to compute configuration: %d\n", err); 2897 2898 tegra_sor_apply_config(sor, &config); 2899 tegra_sor_mode_set(sor, mode, state); 2900 2901 if (output->panel) { 2902 /* CSTM (LVDS, link A/B, upper) */ 2903 value = SOR_CSTM_LVDS | SOR_CSTM_LINK_ACT_A | SOR_CSTM_LINK_ACT_B | 2904 SOR_CSTM_UPPER; 2905 tegra_sor_writel(sor, value, SOR_CSTM); 2906 2907 /* PWM setup */ 2908 err = tegra_sor_setup_pwm(sor, 250); 2909 if (err < 0) 2910 dev_err(sor->dev, "failed to setup PWM: %d\n", err); 2911 } 2912 2913 tegra_sor_update(sor); 2914 2915 err = tegra_sor_power_up(sor, 250); 2916 if (err < 0) 2917 dev_err(sor->dev, "failed to power up SOR: %d\n", err); 2918 2919 /* attach and wake up */ 2920 err = tegra_sor_attach(sor); 2921 if (err < 0) 2922 dev_err(sor->dev, "failed to attach SOR: %d\n", err); 2923 2924 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); 2925 value |= SOR_ENABLE(sor->index); 2926 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); 2927 2928 tegra_dc_commit(dc); 2929 2930 err = tegra_sor_wakeup(sor); 2931 if (err < 0) 2932 dev_err(sor->dev, "failed to wakeup SOR: %d\n", err); 2933 2934 if (output->panel) 2935 drm_panel_enable(output->panel); 2936 } 2937 2938 static const struct drm_encoder_helper_funcs tegra_sor_dp_helpers = { 2939 .disable = tegra_sor_dp_disable, 2940 .enable = tegra_sor_dp_enable, 2941 .atomic_check = tegra_sor_encoder_atomic_check, 2942 }; 2943 2944 static void tegra_sor_disable_regulator(void *data) 2945 { 2946 struct regulator *reg = data; 2947 2948 regulator_disable(reg); 2949 } 2950 2951 static int tegra_sor_enable_regulator(struct tegra_sor *sor, struct regulator *reg) 2952 { 2953 int err; 2954 2955 err = regulator_enable(reg); 2956 if (err) 2957 return err; 2958 2959 return devm_add_action_or_reset(sor->dev, tegra_sor_disable_regulator, reg); 2960 } 2961 2962 static int tegra_sor_hdmi_probe(struct tegra_sor *sor) 2963 { 2964 int err; 2965 2966 sor->avdd_io_supply = devm_regulator_get(sor->dev, "avdd-io-hdmi-dp"); 2967 if (IS_ERR(sor->avdd_io_supply)) { 2968 dev_err(sor->dev, "cannot get AVDD I/O supply: %ld\n", 2969 PTR_ERR(sor->avdd_io_supply)); 2970 return PTR_ERR(sor->avdd_io_supply); 2971 } 2972 2973 err = tegra_sor_enable_regulator(sor, sor->avdd_io_supply); 2974 if (err < 0) { 2975 dev_err(sor->dev, "failed to enable AVDD I/O supply: %d\n", 2976 err); 2977 return err; 2978 } 2979 2980 sor->vdd_pll_supply = devm_regulator_get(sor->dev, "vdd-hdmi-dp-pll"); 2981 if (IS_ERR(sor->vdd_pll_supply)) { 2982 dev_err(sor->dev, "cannot get VDD PLL supply: %ld\n", 2983 PTR_ERR(sor->vdd_pll_supply)); 2984 return PTR_ERR(sor->vdd_pll_supply); 2985 } 2986 2987 err = tegra_sor_enable_regulator(sor, sor->vdd_pll_supply); 2988 if (err < 0) { 2989 dev_err(sor->dev, "failed to enable VDD PLL supply: %d\n", 2990 err); 2991 return err; 2992 } 2993 2994 sor->hdmi_supply = devm_regulator_get(sor->dev, "hdmi"); 2995 if (IS_ERR(sor->hdmi_supply)) { 2996 dev_err(sor->dev, "cannot get HDMI supply: %ld\n", 2997 PTR_ERR(sor->hdmi_supply)); 2998 return PTR_ERR(sor->hdmi_supply); 2999 } 3000 3001 err = tegra_sor_enable_regulator(sor, sor->hdmi_supply); 3002 if (err < 0) { 3003 dev_err(sor->dev, "failed to enable HDMI supply: %d\n", err); 3004 return err; 3005 } 3006 3007 INIT_DELAYED_WORK(&sor->scdc, tegra_sor_hdmi_scdc_work); 3008 3009 return 0; 3010 } 3011 3012 static const struct tegra_sor_ops tegra_sor_hdmi_ops = { 3013 .name = "HDMI", 3014 .probe = tegra_sor_hdmi_probe, 3015 .audio_enable = tegra_sor_hdmi_audio_enable, 3016 .audio_disable = tegra_sor_hdmi_audio_disable, 3017 }; 3018 3019 static int tegra_sor_dp_probe(struct tegra_sor *sor) 3020 { 3021 int err; 3022 3023 sor->avdd_io_supply = devm_regulator_get(sor->dev, "avdd-io-hdmi-dp"); 3024 if (IS_ERR(sor->avdd_io_supply)) 3025 return PTR_ERR(sor->avdd_io_supply); 3026 3027 err = tegra_sor_enable_regulator(sor, sor->avdd_io_supply); 3028 if (err < 0) 3029 return err; 3030 3031 sor->vdd_pll_supply = devm_regulator_get(sor->dev, "vdd-hdmi-dp-pll"); 3032 if (IS_ERR(sor->vdd_pll_supply)) 3033 return PTR_ERR(sor->vdd_pll_supply); 3034 3035 err = tegra_sor_enable_regulator(sor, sor->vdd_pll_supply); 3036 if (err < 0) 3037 return err; 3038 3039 return 0; 3040 } 3041 3042 static const struct tegra_sor_ops tegra_sor_dp_ops = { 3043 .name = "DP", 3044 .probe = tegra_sor_dp_probe, 3045 }; 3046 3047 static int tegra_sor_init(struct host1x_client *client) 3048 { 3049 struct drm_device *drm = dev_get_drvdata(client->host); 3050 const struct drm_encoder_helper_funcs *helpers = NULL; 3051 struct tegra_sor *sor = host1x_client_to_sor(client); 3052 int connector = DRM_MODE_CONNECTOR_Unknown; 3053 int encoder = DRM_MODE_ENCODER_NONE; 3054 int err; 3055 3056 if (!sor->aux) { 3057 if (sor->ops == &tegra_sor_hdmi_ops) { 3058 connector = DRM_MODE_CONNECTOR_HDMIA; 3059 encoder = DRM_MODE_ENCODER_TMDS; 3060 helpers = &tegra_sor_hdmi_helpers; 3061 } else if (sor->soc->supports_lvds) { 3062 connector = DRM_MODE_CONNECTOR_LVDS; 3063 encoder = DRM_MODE_ENCODER_LVDS; 3064 } 3065 } else { 3066 if (sor->output.panel) { 3067 connector = DRM_MODE_CONNECTOR_eDP; 3068 encoder = DRM_MODE_ENCODER_TMDS; 3069 helpers = &tegra_sor_dp_helpers; 3070 } else { 3071 connector = DRM_MODE_CONNECTOR_DisplayPort; 3072 encoder = DRM_MODE_ENCODER_TMDS; 3073 helpers = &tegra_sor_dp_helpers; 3074 } 3075 3076 sor->link.ops = &tegra_sor_dp_link_ops; 3077 sor->link.aux = sor->aux; 3078 } 3079 3080 sor->output.dev = sor->dev; 3081 3082 drm_connector_init_with_ddc(drm, &sor->output.connector, 3083 &tegra_sor_connector_funcs, 3084 connector, 3085 sor->output.ddc); 3086 drm_connector_helper_add(&sor->output.connector, 3087 &tegra_sor_connector_helper_funcs); 3088 sor->output.connector.dpms = DRM_MODE_DPMS_OFF; 3089 3090 drm_simple_encoder_init(drm, &sor->output.encoder, encoder); 3091 drm_encoder_helper_add(&sor->output.encoder, helpers); 3092 3093 drm_connector_attach_encoder(&sor->output.connector, 3094 &sor->output.encoder); 3095 drm_connector_register(&sor->output.connector); 3096 3097 err = tegra_output_init(drm, &sor->output); 3098 if (err < 0) { 3099 dev_err(client->dev, "failed to initialize output: %d\n", err); 3100 return err; 3101 } 3102 3103 tegra_output_find_possible_crtcs(&sor->output, drm); 3104 3105 if (sor->aux) { 3106 err = drm_dp_aux_attach(sor->aux, &sor->output); 3107 if (err < 0) { 3108 dev_err(sor->dev, "failed to attach DP: %d\n", err); 3109 return err; 3110 } 3111 } 3112 3113 /* 3114 * XXX: Remove this reset once proper hand-over from firmware to 3115 * kernel is possible. 3116 */ 3117 if (sor->rst) { 3118 err = pm_runtime_resume_and_get(sor->dev); 3119 if (err < 0) { 3120 dev_err(sor->dev, "failed to get runtime PM: %d\n", err); 3121 return err; 3122 } 3123 3124 err = reset_control_acquire(sor->rst); 3125 if (err < 0) { 3126 dev_err(sor->dev, "failed to acquire SOR reset: %d\n", 3127 err); 3128 return err; 3129 } 3130 3131 err = reset_control_assert(sor->rst); 3132 if (err < 0) { 3133 dev_err(sor->dev, "failed to assert SOR reset: %d\n", 3134 err); 3135 return err; 3136 } 3137 } 3138 3139 err = clk_prepare_enable(sor->clk); 3140 if (err < 0) { 3141 dev_err(sor->dev, "failed to enable clock: %d\n", err); 3142 return err; 3143 } 3144 3145 usleep_range(1000, 3000); 3146 3147 if (sor->rst) { 3148 err = reset_control_deassert(sor->rst); 3149 if (err < 0) { 3150 dev_err(sor->dev, "failed to deassert SOR reset: %d\n", 3151 err); 3152 clk_disable_unprepare(sor->clk); 3153 return err; 3154 } 3155 3156 reset_control_release(sor->rst); 3157 pm_runtime_put(sor->dev); 3158 } 3159 3160 err = clk_prepare_enable(sor->clk_safe); 3161 if (err < 0) { 3162 clk_disable_unprepare(sor->clk); 3163 return err; 3164 } 3165 3166 err = clk_prepare_enable(sor->clk_dp); 3167 if (err < 0) { 3168 clk_disable_unprepare(sor->clk_safe); 3169 clk_disable_unprepare(sor->clk); 3170 return err; 3171 } 3172 3173 return 0; 3174 } 3175 3176 static int tegra_sor_exit(struct host1x_client *client) 3177 { 3178 struct tegra_sor *sor = host1x_client_to_sor(client); 3179 int err; 3180 3181 tegra_output_exit(&sor->output); 3182 3183 if (sor->aux) { 3184 err = drm_dp_aux_detach(sor->aux); 3185 if (err < 0) { 3186 dev_err(sor->dev, "failed to detach DP: %d\n", err); 3187 return err; 3188 } 3189 } 3190 3191 clk_disable_unprepare(sor->clk_safe); 3192 clk_disable_unprepare(sor->clk_dp); 3193 clk_disable_unprepare(sor->clk); 3194 3195 return 0; 3196 } 3197 3198 static int tegra_sor_runtime_suspend(struct host1x_client *client) 3199 { 3200 struct tegra_sor *sor = host1x_client_to_sor(client); 3201 struct device *dev = client->dev; 3202 int err; 3203 3204 if (sor->rst) { 3205 err = reset_control_assert(sor->rst); 3206 if (err < 0) { 3207 dev_err(dev, "failed to assert reset: %d\n", err); 3208 return err; 3209 } 3210 3211 reset_control_release(sor->rst); 3212 } 3213 3214 usleep_range(1000, 2000); 3215 3216 clk_disable_unprepare(sor->clk); 3217 pm_runtime_put_sync(dev); 3218 3219 return 0; 3220 } 3221 3222 static int tegra_sor_runtime_resume(struct host1x_client *client) 3223 { 3224 struct tegra_sor *sor = host1x_client_to_sor(client); 3225 struct device *dev = client->dev; 3226 int err; 3227 3228 err = pm_runtime_resume_and_get(dev); 3229 if (err < 0) { 3230 dev_err(dev, "failed to get runtime PM: %d\n", err); 3231 return err; 3232 } 3233 3234 err = clk_prepare_enable(sor->clk); 3235 if (err < 0) { 3236 dev_err(dev, "failed to enable clock: %d\n", err); 3237 goto put_rpm; 3238 } 3239 3240 usleep_range(1000, 2000); 3241 3242 if (sor->rst) { 3243 err = reset_control_acquire(sor->rst); 3244 if (err < 0) { 3245 dev_err(dev, "failed to acquire reset: %d\n", err); 3246 goto disable_clk; 3247 } 3248 3249 err = reset_control_deassert(sor->rst); 3250 if (err < 0) { 3251 dev_err(dev, "failed to deassert reset: %d\n", err); 3252 goto release_reset; 3253 } 3254 } 3255 3256 return 0; 3257 3258 release_reset: 3259 reset_control_release(sor->rst); 3260 disable_clk: 3261 clk_disable_unprepare(sor->clk); 3262 put_rpm: 3263 pm_runtime_put_sync(dev); 3264 return err; 3265 } 3266 3267 static const struct host1x_client_ops sor_client_ops = { 3268 .init = tegra_sor_init, 3269 .exit = tegra_sor_exit, 3270 .suspend = tegra_sor_runtime_suspend, 3271 .resume = tegra_sor_runtime_resume, 3272 }; 3273 3274 static const u8 tegra124_sor_xbar_cfg[5] = { 3275 0, 1, 2, 3, 4 3276 }; 3277 3278 static const struct tegra_sor_regs tegra124_sor_regs = { 3279 .head_state0 = 0x05, 3280 .head_state1 = 0x07, 3281 .head_state2 = 0x09, 3282 .head_state3 = 0x0b, 3283 .head_state4 = 0x0d, 3284 .head_state5 = 0x0f, 3285 .pll0 = 0x17, 3286 .pll1 = 0x18, 3287 .pll2 = 0x19, 3288 .pll3 = 0x1a, 3289 .dp_padctl0 = 0x5c, 3290 .dp_padctl2 = 0x73, 3291 }; 3292 3293 /* Tegra124 and Tegra132 have lanes 0 and 2 swapped. */ 3294 static const u8 tegra124_sor_lane_map[4] = { 3295 2, 1, 0, 3, 3296 }; 3297 3298 static const u8 tegra124_sor_voltage_swing[4][4][4] = { 3299 { 3300 { 0x13, 0x19, 0x1e, 0x28 }, 3301 { 0x1e, 0x25, 0x2d, }, 3302 { 0x28, 0x32, }, 3303 { 0x3c, }, 3304 }, { 3305 { 0x12, 0x17, 0x1b, 0x25 }, 3306 { 0x1c, 0x23, 0x2a, }, 3307 { 0x25, 0x2f, }, 3308 { 0x39, } 3309 }, { 3310 { 0x12, 0x16, 0x1a, 0x22 }, 3311 { 0x1b, 0x20, 0x27, }, 3312 { 0x24, 0x2d, }, 3313 { 0x36, }, 3314 }, { 3315 { 0x11, 0x14, 0x17, 0x1f }, 3316 { 0x19, 0x1e, 0x24, }, 3317 { 0x22, 0x2a, }, 3318 { 0x32, }, 3319 }, 3320 }; 3321 3322 static const u8 tegra124_sor_pre_emphasis[4][4][4] = { 3323 { 3324 { 0x00, 0x09, 0x13, 0x25 }, 3325 { 0x00, 0x0f, 0x1e, }, 3326 { 0x00, 0x14, }, 3327 { 0x00, }, 3328 }, { 3329 { 0x00, 0x0a, 0x14, 0x28 }, 3330 { 0x00, 0x0f, 0x1e, }, 3331 { 0x00, 0x14, }, 3332 { 0x00 }, 3333 }, { 3334 { 0x00, 0x0a, 0x14, 0x28 }, 3335 { 0x00, 0x0f, 0x1e, }, 3336 { 0x00, 0x14, }, 3337 { 0x00, }, 3338 }, { 3339 { 0x00, 0x0a, 0x14, 0x28 }, 3340 { 0x00, 0x0f, 0x1e, }, 3341 { 0x00, 0x14, }, 3342 { 0x00, }, 3343 }, 3344 }; 3345 3346 static const u8 tegra124_sor_post_cursor[4][4][4] = { 3347 { 3348 { 0x00, 0x00, 0x00, 0x00 }, 3349 { 0x00, 0x00, 0x00, }, 3350 { 0x00, 0x00, }, 3351 { 0x00, }, 3352 }, { 3353 { 0x02, 0x02, 0x04, 0x05 }, 3354 { 0x02, 0x04, 0x05, }, 3355 { 0x04, 0x05, }, 3356 { 0x05, }, 3357 }, { 3358 { 0x04, 0x05, 0x08, 0x0b }, 3359 { 0x05, 0x09, 0x0b, }, 3360 { 0x08, 0x0a, }, 3361 { 0x0b, }, 3362 }, { 3363 { 0x05, 0x09, 0x0b, 0x12 }, 3364 { 0x09, 0x0d, 0x12, }, 3365 { 0x0b, 0x0f, }, 3366 { 0x12, }, 3367 }, 3368 }; 3369 3370 static const u8 tegra124_sor_tx_pu[4][4][4] = { 3371 { 3372 { 0x20, 0x30, 0x40, 0x60 }, 3373 { 0x30, 0x40, 0x60, }, 3374 { 0x40, 0x60, }, 3375 { 0x60, }, 3376 }, { 3377 { 0x20, 0x20, 0x30, 0x50 }, 3378 { 0x30, 0x40, 0x50, }, 3379 { 0x40, 0x50, }, 3380 { 0x60, }, 3381 }, { 3382 { 0x20, 0x20, 0x30, 0x40, }, 3383 { 0x30, 0x30, 0x40, }, 3384 { 0x40, 0x50, }, 3385 { 0x60, }, 3386 }, { 3387 { 0x20, 0x20, 0x20, 0x40, }, 3388 { 0x30, 0x30, 0x40, }, 3389 { 0x40, 0x40, }, 3390 { 0x60, }, 3391 }, 3392 }; 3393 3394 static const struct tegra_sor_soc tegra124_sor = { 3395 .supports_lvds = true, 3396 .supports_hdmi = false, 3397 .supports_dp = true, 3398 .supports_audio = false, 3399 .supports_hdcp = false, 3400 .regs = &tegra124_sor_regs, 3401 .has_nvdisplay = false, 3402 .xbar_cfg = tegra124_sor_xbar_cfg, 3403 .lane_map = tegra124_sor_lane_map, 3404 .voltage_swing = tegra124_sor_voltage_swing, 3405 .pre_emphasis = tegra124_sor_pre_emphasis, 3406 .post_cursor = tegra124_sor_post_cursor, 3407 .tx_pu = tegra124_sor_tx_pu, 3408 }; 3409 3410 static const u8 tegra132_sor_pre_emphasis[4][4][4] = { 3411 { 3412 { 0x00, 0x08, 0x12, 0x24 }, 3413 { 0x01, 0x0e, 0x1d, }, 3414 { 0x01, 0x13, }, 3415 { 0x00, }, 3416 }, { 3417 { 0x00, 0x08, 0x12, 0x24 }, 3418 { 0x00, 0x0e, 0x1d, }, 3419 { 0x00, 0x13, }, 3420 { 0x00 }, 3421 }, { 3422 { 0x00, 0x08, 0x12, 0x24 }, 3423 { 0x00, 0x0e, 0x1d, }, 3424 { 0x00, 0x13, }, 3425 { 0x00, }, 3426 }, { 3427 { 0x00, 0x08, 0x12, 0x24 }, 3428 { 0x00, 0x0e, 0x1d, }, 3429 { 0x00, 0x13, }, 3430 { 0x00, }, 3431 }, 3432 }; 3433 3434 static const struct tegra_sor_soc tegra132_sor = { 3435 .supports_lvds = true, 3436 .supports_hdmi = false, 3437 .supports_dp = true, 3438 .supports_audio = false, 3439 .supports_hdcp = false, 3440 .regs = &tegra124_sor_regs, 3441 .has_nvdisplay = false, 3442 .xbar_cfg = tegra124_sor_xbar_cfg, 3443 .lane_map = tegra124_sor_lane_map, 3444 .voltage_swing = tegra124_sor_voltage_swing, 3445 .pre_emphasis = tegra132_sor_pre_emphasis, 3446 .post_cursor = tegra124_sor_post_cursor, 3447 .tx_pu = tegra124_sor_tx_pu, 3448 }; 3449 3450 static const struct tegra_sor_regs tegra210_sor_regs = { 3451 .head_state0 = 0x05, 3452 .head_state1 = 0x07, 3453 .head_state2 = 0x09, 3454 .head_state3 = 0x0b, 3455 .head_state4 = 0x0d, 3456 .head_state5 = 0x0f, 3457 .pll0 = 0x17, 3458 .pll1 = 0x18, 3459 .pll2 = 0x19, 3460 .pll3 = 0x1a, 3461 .dp_padctl0 = 0x5c, 3462 .dp_padctl2 = 0x73, 3463 }; 3464 3465 static const u8 tegra210_sor_xbar_cfg[5] = { 3466 2, 1, 0, 3, 4 3467 }; 3468 3469 static const u8 tegra210_sor_lane_map[4] = { 3470 0, 1, 2, 3, 3471 }; 3472 3473 static const struct tegra_sor_soc tegra210_sor = { 3474 .supports_lvds = false, 3475 .supports_hdmi = false, 3476 .supports_dp = true, 3477 .supports_audio = false, 3478 .supports_hdcp = false, 3479 3480 .regs = &tegra210_sor_regs, 3481 .has_nvdisplay = false, 3482 3483 .xbar_cfg = tegra210_sor_xbar_cfg, 3484 .lane_map = tegra210_sor_lane_map, 3485 .voltage_swing = tegra124_sor_voltage_swing, 3486 .pre_emphasis = tegra124_sor_pre_emphasis, 3487 .post_cursor = tegra124_sor_post_cursor, 3488 .tx_pu = tegra124_sor_tx_pu, 3489 }; 3490 3491 static const struct tegra_sor_soc tegra210_sor1 = { 3492 .supports_lvds = false, 3493 .supports_hdmi = true, 3494 .supports_dp = true, 3495 .supports_audio = true, 3496 .supports_hdcp = true, 3497 3498 .regs = &tegra210_sor_regs, 3499 .has_nvdisplay = false, 3500 3501 .num_settings = ARRAY_SIZE(tegra210_sor_hdmi_defaults), 3502 .settings = tegra210_sor_hdmi_defaults, 3503 .xbar_cfg = tegra210_sor_xbar_cfg, 3504 .lane_map = tegra210_sor_lane_map, 3505 .voltage_swing = tegra124_sor_voltage_swing, 3506 .pre_emphasis = tegra124_sor_pre_emphasis, 3507 .post_cursor = tegra124_sor_post_cursor, 3508 .tx_pu = tegra124_sor_tx_pu, 3509 }; 3510 3511 static const struct tegra_sor_regs tegra186_sor_regs = { 3512 .head_state0 = 0x151, 3513 .head_state1 = 0x154, 3514 .head_state2 = 0x157, 3515 .head_state3 = 0x15a, 3516 .head_state4 = 0x15d, 3517 .head_state5 = 0x160, 3518 .pll0 = 0x163, 3519 .pll1 = 0x164, 3520 .pll2 = 0x165, 3521 .pll3 = 0x166, 3522 .dp_padctl0 = 0x168, 3523 .dp_padctl2 = 0x16a, 3524 }; 3525 3526 static const u8 tegra186_sor_voltage_swing[4][4][4] = { 3527 { 3528 { 0x13, 0x19, 0x1e, 0x28 }, 3529 { 0x1e, 0x25, 0x2d, }, 3530 { 0x28, 0x32, }, 3531 { 0x39, }, 3532 }, { 3533 { 0x12, 0x16, 0x1b, 0x25 }, 3534 { 0x1c, 0x23, 0x2a, }, 3535 { 0x25, 0x2f, }, 3536 { 0x37, } 3537 }, { 3538 { 0x12, 0x16, 0x1a, 0x22 }, 3539 { 0x1b, 0x20, 0x27, }, 3540 { 0x24, 0x2d, }, 3541 { 0x35, }, 3542 }, { 3543 { 0x11, 0x14, 0x17, 0x1f }, 3544 { 0x19, 0x1e, 0x24, }, 3545 { 0x22, 0x2a, }, 3546 { 0x32, }, 3547 }, 3548 }; 3549 3550 static const u8 tegra186_sor_pre_emphasis[4][4][4] = { 3551 { 3552 { 0x00, 0x08, 0x12, 0x24 }, 3553 { 0x01, 0x0e, 0x1d, }, 3554 { 0x01, 0x13, }, 3555 { 0x00, }, 3556 }, { 3557 { 0x00, 0x08, 0x12, 0x24 }, 3558 { 0x00, 0x0e, 0x1d, }, 3559 { 0x00, 0x13, }, 3560 { 0x00 }, 3561 }, { 3562 { 0x00, 0x08, 0x14, 0x24 }, 3563 { 0x00, 0x0e, 0x1d, }, 3564 { 0x00, 0x13, }, 3565 { 0x00, }, 3566 }, { 3567 { 0x00, 0x08, 0x12, 0x24 }, 3568 { 0x00, 0x0e, 0x1d, }, 3569 { 0x00, 0x13, }, 3570 { 0x00, }, 3571 }, 3572 }; 3573 3574 static const struct tegra_sor_soc tegra186_sor = { 3575 .supports_lvds = false, 3576 .supports_hdmi = true, 3577 .supports_dp = true, 3578 .supports_audio = true, 3579 .supports_hdcp = true, 3580 3581 .regs = &tegra186_sor_regs, 3582 .has_nvdisplay = true, 3583 3584 .num_settings = ARRAY_SIZE(tegra186_sor_hdmi_defaults), 3585 .settings = tegra186_sor_hdmi_defaults, 3586 .xbar_cfg = tegra124_sor_xbar_cfg, 3587 .lane_map = tegra124_sor_lane_map, 3588 .voltage_swing = tegra186_sor_voltage_swing, 3589 .pre_emphasis = tegra186_sor_pre_emphasis, 3590 .post_cursor = tegra124_sor_post_cursor, 3591 .tx_pu = tegra124_sor_tx_pu, 3592 }; 3593 3594 static const struct tegra_sor_regs tegra194_sor_regs = { 3595 .head_state0 = 0x151, 3596 .head_state1 = 0x155, 3597 .head_state2 = 0x159, 3598 .head_state3 = 0x15d, 3599 .head_state4 = 0x161, 3600 .head_state5 = 0x165, 3601 .pll0 = 0x169, 3602 .pll1 = 0x16a, 3603 .pll2 = 0x16b, 3604 .pll3 = 0x16c, 3605 .dp_padctl0 = 0x16e, 3606 .dp_padctl2 = 0x16f, 3607 }; 3608 3609 static const struct tegra_sor_soc tegra194_sor = { 3610 .supports_lvds = false, 3611 .supports_hdmi = true, 3612 .supports_dp = true, 3613 .supports_audio = true, 3614 .supports_hdcp = true, 3615 3616 .regs = &tegra194_sor_regs, 3617 .has_nvdisplay = true, 3618 3619 .num_settings = ARRAY_SIZE(tegra194_sor_hdmi_defaults), 3620 .settings = tegra194_sor_hdmi_defaults, 3621 3622 .xbar_cfg = tegra210_sor_xbar_cfg, 3623 .lane_map = tegra124_sor_lane_map, 3624 .voltage_swing = tegra186_sor_voltage_swing, 3625 .pre_emphasis = tegra186_sor_pre_emphasis, 3626 .post_cursor = tegra124_sor_post_cursor, 3627 .tx_pu = tegra124_sor_tx_pu, 3628 }; 3629 3630 static const struct of_device_id tegra_sor_of_match[] = { 3631 { .compatible = "nvidia,tegra194-sor", .data = &tegra194_sor }, 3632 { .compatible = "nvidia,tegra186-sor", .data = &tegra186_sor }, 3633 { .compatible = "nvidia,tegra210-sor1", .data = &tegra210_sor1 }, 3634 { .compatible = "nvidia,tegra210-sor", .data = &tegra210_sor }, 3635 { .compatible = "nvidia,tegra132-sor", .data = &tegra132_sor }, 3636 { .compatible = "nvidia,tegra124-sor", .data = &tegra124_sor }, 3637 { }, 3638 }; 3639 MODULE_DEVICE_TABLE(of, tegra_sor_of_match); 3640 3641 static int tegra_sor_parse_dt(struct tegra_sor *sor) 3642 { 3643 struct device_node *np = sor->dev->of_node; 3644 u32 xbar_cfg[5]; 3645 unsigned int i; 3646 u32 value; 3647 int err; 3648 3649 if (sor->soc->has_nvdisplay) { 3650 err = of_property_read_u32(np, "nvidia,interface", &value); 3651 if (err < 0) 3652 return err; 3653 3654 sor->index = value; 3655 3656 /* 3657 * override the default that we already set for Tegra210 and 3658 * earlier 3659 */ 3660 sor->pad = TEGRA_IO_PAD_HDMI_DP0 + sor->index; 3661 } else { 3662 if (!sor->soc->supports_audio) 3663 sor->index = 0; 3664 else 3665 sor->index = 1; 3666 } 3667 3668 err = of_property_read_u32_array(np, "nvidia,xbar-cfg", xbar_cfg, 5); 3669 if (err < 0) { 3670 /* fall back to default per-SoC XBAR configuration */ 3671 for (i = 0; i < 5; i++) 3672 sor->xbar_cfg[i] = sor->soc->xbar_cfg[i]; 3673 } else { 3674 /* copy cells to SOR XBAR configuration */ 3675 for (i = 0; i < 5; i++) 3676 sor->xbar_cfg[i] = xbar_cfg[i]; 3677 } 3678 3679 return 0; 3680 } 3681 3682 static irqreturn_t tegra_sor_irq(int irq, void *data) 3683 { 3684 struct tegra_sor *sor = data; 3685 u32 value; 3686 3687 value = tegra_sor_readl(sor, SOR_INT_STATUS); 3688 tegra_sor_writel(sor, value, SOR_INT_STATUS); 3689 3690 if (value & SOR_INT_CODEC_SCRATCH0) { 3691 value = tegra_sor_readl(sor, SOR_AUDIO_HDA_CODEC_SCRATCH0); 3692 3693 if (value & SOR_AUDIO_HDA_CODEC_SCRATCH0_VALID) { 3694 unsigned int format; 3695 3696 format = value & SOR_AUDIO_HDA_CODEC_SCRATCH0_FMT_MASK; 3697 3698 tegra_hda_parse_format(format, &sor->format); 3699 3700 if (sor->ops->audio_enable) 3701 sor->ops->audio_enable(sor); 3702 } else { 3703 if (sor->ops->audio_disable) 3704 sor->ops->audio_disable(sor); 3705 } 3706 } 3707 3708 return IRQ_HANDLED; 3709 } 3710 3711 static int tegra_sor_probe(struct platform_device *pdev) 3712 { 3713 struct device_node *np; 3714 struct tegra_sor *sor; 3715 struct resource *regs; 3716 int err; 3717 3718 sor = devm_kzalloc(&pdev->dev, sizeof(*sor), GFP_KERNEL); 3719 if (!sor) 3720 return -ENOMEM; 3721 3722 sor->soc = of_device_get_match_data(&pdev->dev); 3723 sor->output.dev = sor->dev = &pdev->dev; 3724 3725 sor->settings = devm_kmemdup(&pdev->dev, sor->soc->settings, 3726 sor->soc->num_settings * 3727 sizeof(*sor->settings), 3728 GFP_KERNEL); 3729 if (!sor->settings) 3730 return -ENOMEM; 3731 3732 sor->num_settings = sor->soc->num_settings; 3733 3734 np = of_parse_phandle(pdev->dev.of_node, "nvidia,dpaux", 0); 3735 if (np) { 3736 sor->aux = drm_dp_aux_find_by_of_node(np); 3737 of_node_put(np); 3738 3739 if (!sor->aux) 3740 return -EPROBE_DEFER; 3741 3742 if (get_device(&sor->aux->ddc.dev)) { 3743 if (try_module_get(sor->aux->ddc.owner)) 3744 sor->output.ddc = &sor->aux->ddc; 3745 else 3746 put_device(&sor->aux->ddc.dev); 3747 } 3748 } 3749 3750 if (!sor->aux) { 3751 if (sor->soc->supports_hdmi) { 3752 sor->ops = &tegra_sor_hdmi_ops; 3753 sor->pad = TEGRA_IO_PAD_HDMI; 3754 } else if (sor->soc->supports_lvds) { 3755 dev_err(&pdev->dev, "LVDS not supported yet\n"); 3756 return -ENODEV; 3757 } else { 3758 dev_err(&pdev->dev, "unknown (non-DP) support\n"); 3759 return -ENODEV; 3760 } 3761 } else { 3762 np = of_parse_phandle(pdev->dev.of_node, "nvidia,panel", 0); 3763 /* 3764 * No need to keep this around since we only use it as a check 3765 * to see if a panel is connected (eDP) or not (DP). 3766 */ 3767 of_node_put(np); 3768 3769 sor->ops = &tegra_sor_dp_ops; 3770 sor->pad = TEGRA_IO_PAD_LVDS; 3771 } 3772 3773 err = tegra_sor_parse_dt(sor); 3774 if (err < 0) 3775 return err; 3776 3777 err = tegra_output_probe(&sor->output); 3778 if (err < 0) 3779 return dev_err_probe(&pdev->dev, err, 3780 "failed to probe output\n"); 3781 3782 if (sor->ops && sor->ops->probe) { 3783 err = sor->ops->probe(sor); 3784 if (err < 0) { 3785 dev_err(&pdev->dev, "failed to probe %s: %d\n", 3786 sor->ops->name, err); 3787 goto remove; 3788 } 3789 } 3790 3791 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); 3792 sor->regs = devm_ioremap_resource(&pdev->dev, regs); 3793 if (IS_ERR(sor->regs)) { 3794 err = PTR_ERR(sor->regs); 3795 goto remove; 3796 } 3797 3798 err = platform_get_irq(pdev, 0); 3799 if (err < 0) { 3800 dev_err(&pdev->dev, "failed to get IRQ: %d\n", err); 3801 goto remove; 3802 } 3803 3804 sor->irq = err; 3805 3806 err = devm_request_irq(sor->dev, sor->irq, tegra_sor_irq, 0, 3807 dev_name(sor->dev), sor); 3808 if (err < 0) { 3809 dev_err(&pdev->dev, "failed to request IRQ: %d\n", err); 3810 goto remove; 3811 } 3812 3813 sor->rst = devm_reset_control_get_exclusive_released(&pdev->dev, "sor"); 3814 if (IS_ERR(sor->rst)) { 3815 err = PTR_ERR(sor->rst); 3816 3817 if (err != -EBUSY || WARN_ON(!pdev->dev.pm_domain)) { 3818 dev_err(&pdev->dev, "failed to get reset control: %d\n", 3819 err); 3820 goto remove; 3821 } 3822 3823 /* 3824 * At this point, the reset control is most likely being used 3825 * by the generic power domain implementation. With any luck 3826 * the power domain will have taken care of resetting the SOR 3827 * and we don't have to do anything. 3828 */ 3829 sor->rst = NULL; 3830 } 3831 3832 sor->clk = devm_clk_get(&pdev->dev, NULL); 3833 if (IS_ERR(sor->clk)) { 3834 err = PTR_ERR(sor->clk); 3835 dev_err(&pdev->dev, "failed to get module clock: %d\n", err); 3836 goto remove; 3837 } 3838 3839 if (sor->soc->supports_hdmi || sor->soc->supports_dp) { 3840 struct device_node *np = pdev->dev.of_node; 3841 const char *name; 3842 3843 /* 3844 * For backwards compatibility with Tegra210 device trees, 3845 * fall back to the old clock name "source" if the new "out" 3846 * clock is not available. 3847 */ 3848 if (of_property_match_string(np, "clock-names", "out") < 0) 3849 name = "source"; 3850 else 3851 name = "out"; 3852 3853 sor->clk_out = devm_clk_get(&pdev->dev, name); 3854 if (IS_ERR(sor->clk_out)) { 3855 err = PTR_ERR(sor->clk_out); 3856 dev_err(sor->dev, "failed to get %s clock: %d\n", 3857 name, err); 3858 goto remove; 3859 } 3860 } else { 3861 /* fall back to the module clock on SOR0 (eDP/LVDS only) */ 3862 sor->clk_out = sor->clk; 3863 } 3864 3865 sor->clk_parent = devm_clk_get(&pdev->dev, "parent"); 3866 if (IS_ERR(sor->clk_parent)) { 3867 err = PTR_ERR(sor->clk_parent); 3868 dev_err(&pdev->dev, "failed to get parent clock: %d\n", err); 3869 goto remove; 3870 } 3871 3872 sor->clk_safe = devm_clk_get(&pdev->dev, "safe"); 3873 if (IS_ERR(sor->clk_safe)) { 3874 err = PTR_ERR(sor->clk_safe); 3875 dev_err(&pdev->dev, "failed to get safe clock: %d\n", err); 3876 goto remove; 3877 } 3878 3879 sor->clk_dp = devm_clk_get(&pdev->dev, "dp"); 3880 if (IS_ERR(sor->clk_dp)) { 3881 err = PTR_ERR(sor->clk_dp); 3882 dev_err(&pdev->dev, "failed to get DP clock: %d\n", err); 3883 goto remove; 3884 } 3885 3886 /* 3887 * Starting with Tegra186, the BPMP provides an implementation for 3888 * the pad output clock, so we have to look it up from device tree. 3889 */ 3890 sor->clk_pad = devm_clk_get(&pdev->dev, "pad"); 3891 if (IS_ERR(sor->clk_pad)) { 3892 if (sor->clk_pad != ERR_PTR(-ENOENT)) { 3893 err = PTR_ERR(sor->clk_pad); 3894 goto remove; 3895 } 3896 3897 /* 3898 * If the pad output clock is not available, then we assume 3899 * we're on Tegra210 or earlier and have to provide our own 3900 * implementation. 3901 */ 3902 sor->clk_pad = NULL; 3903 } 3904 3905 /* 3906 * The bootloader may have set up the SOR such that it's module clock 3907 * is sourced by one of the display PLLs. However, that doesn't work 3908 * without properly having set up other bits of the SOR. 3909 */ 3910 err = clk_set_parent(sor->clk_out, sor->clk_safe); 3911 if (err < 0) { 3912 dev_err(&pdev->dev, "failed to use safe clock: %d\n", err); 3913 goto remove; 3914 } 3915 3916 platform_set_drvdata(pdev, sor); 3917 pm_runtime_enable(&pdev->dev); 3918 3919 INIT_LIST_HEAD(&sor->client.list); 3920 sor->client.ops = &sor_client_ops; 3921 sor->client.dev = &pdev->dev; 3922 3923 err = host1x_client_register(&sor->client); 3924 if (err < 0) { 3925 dev_err(&pdev->dev, "failed to register host1x client: %d\n", 3926 err); 3927 goto rpm_disable; 3928 } 3929 3930 /* 3931 * On Tegra210 and earlier, provide our own implementation for the 3932 * pad output clock. 3933 */ 3934 if (!sor->clk_pad) { 3935 char *name; 3936 3937 name = devm_kasprintf(sor->dev, GFP_KERNEL, "sor%u_pad_clkout", 3938 sor->index); 3939 if (!name) { 3940 err = -ENOMEM; 3941 goto unregister; 3942 } 3943 3944 err = host1x_client_resume(&sor->client); 3945 if (err < 0) { 3946 dev_err(sor->dev, "failed to resume: %d\n", err); 3947 goto unregister; 3948 } 3949 3950 sor->clk_pad = tegra_clk_sor_pad_register(sor, name); 3951 host1x_client_suspend(&sor->client); 3952 } 3953 3954 if (IS_ERR(sor->clk_pad)) { 3955 err = PTR_ERR(sor->clk_pad); 3956 dev_err(sor->dev, "failed to register SOR pad clock: %d\n", 3957 err); 3958 goto unregister; 3959 } 3960 3961 return 0; 3962 3963 unregister: 3964 host1x_client_unregister(&sor->client); 3965 rpm_disable: 3966 pm_runtime_disable(&pdev->dev); 3967 remove: 3968 tegra_output_remove(&sor->output); 3969 return err; 3970 } 3971 3972 static int tegra_sor_remove(struct platform_device *pdev) 3973 { 3974 struct tegra_sor *sor = platform_get_drvdata(pdev); 3975 int err; 3976 3977 err = host1x_client_unregister(&sor->client); 3978 if (err < 0) { 3979 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", 3980 err); 3981 return err; 3982 } 3983 3984 pm_runtime_disable(&pdev->dev); 3985 3986 tegra_output_remove(&sor->output); 3987 3988 return 0; 3989 } 3990 3991 static int __maybe_unused tegra_sor_suspend(struct device *dev) 3992 { 3993 struct tegra_sor *sor = dev_get_drvdata(dev); 3994 int err; 3995 3996 err = tegra_output_suspend(&sor->output); 3997 if (err < 0) { 3998 dev_err(dev, "failed to suspend output: %d\n", err); 3999 return err; 4000 } 4001 4002 if (sor->hdmi_supply) { 4003 err = regulator_disable(sor->hdmi_supply); 4004 if (err < 0) { 4005 tegra_output_resume(&sor->output); 4006 return err; 4007 } 4008 } 4009 4010 return 0; 4011 } 4012 4013 static int __maybe_unused tegra_sor_resume(struct device *dev) 4014 { 4015 struct tegra_sor *sor = dev_get_drvdata(dev); 4016 int err; 4017 4018 if (sor->hdmi_supply) { 4019 err = regulator_enable(sor->hdmi_supply); 4020 if (err < 0) 4021 return err; 4022 } 4023 4024 err = tegra_output_resume(&sor->output); 4025 if (err < 0) { 4026 dev_err(dev, "failed to resume output: %d\n", err); 4027 4028 if (sor->hdmi_supply) 4029 regulator_disable(sor->hdmi_supply); 4030 4031 return err; 4032 } 4033 4034 return 0; 4035 } 4036 4037 static const struct dev_pm_ops tegra_sor_pm_ops = { 4038 SET_SYSTEM_SLEEP_PM_OPS(tegra_sor_suspend, tegra_sor_resume) 4039 }; 4040 4041 struct platform_driver tegra_sor_driver = { 4042 .driver = { 4043 .name = "tegra-sor", 4044 .of_match_table = tegra_sor_of_match, 4045 .pm = &tegra_sor_pm_ops, 4046 }, 4047 .probe = tegra_sor_probe, 4048 .remove = tegra_sor_remove, 4049 }; 4050