drivers/gpu/drm/tegra/sor.c

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