kernel/drivers/gpu/drm/tegra/hdmi.c

   1 /*
   2  * Copyright (C) 2012 Avionic Design GmbH
   3  * Copyright (C) 2012 NVIDIA CORPORATION.  All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/debugfs.h>
  12 #include <linux/gpio.h>
  13 #include <linux/hdmi.h>
  14 #include <linux/regulator/consumer.h>
  15 #include <linux/reset.h>
  16
  17 #include <drm/drm_atomic_helper.h>
  18 #include <drm/drm_crtc.h>
  19 #include <drm/drm_crtc_helper.h>
  20
  21 #include "hdmi.h"
  22 #include "drm.h"
  23 #include "dc.h"
  24
  25 struct tmds_config {
  26         unsigned int pclk;
  27         u32 pll0;
  28         u32 pll1;
  29         u32 pe_current;
  30         u32 drive_current;
  31         u32 peak_current;
  32 };
  33
  34 struct tegra_hdmi_config {
  35         const struct tmds_config *tmds;
  36         unsigned int num_tmds;
  37
  38         unsigned long fuse_override_offset;
  39         u32 fuse_override_value;
  40
  41         bool has_sor_io_peak_current;
  42 };
  43
  44 struct tegra_hdmi {
  45         struct host1x_client client;
  46         struct tegra_output output;
  47         struct device *dev;
  48
  49         struct regulator *hdmi;
  50         struct regulator *pll;
  51         struct regulator *vdd;
  52
  53         void __iomem *regs;
  54         unsigned int irq;
  55
  56         struct clk *clk_parent;
  57         struct clk *clk;
  58         struct reset_control *rst;
  59
  60         const struct tegra_hdmi_config *config;
  61
  62         unsigned int audio_source;
  63         unsigned int audio_freq;
  64         bool stereo;
  65         bool dvi;
  66
  67         struct drm_info_list *debugfs_files;
  68         struct drm_minor *minor;
  69         struct dentry *debugfs;
  70 };
  71
  72 static inline struct tegra_hdmi *
  73 host1x_client_to_hdmi(struct host1x_client *client)
  74 {
  75         return container_of(client, struct tegra_hdmi, client);
  76 }
  77
  78 static inline struct tegra_hdmi *to_hdmi(struct tegra_output *output)
  79 {
  80         return container_of(output, struct tegra_hdmi, output);
  81 }
  82
  83 #define HDMI_AUDIOCLK_FREQ 216000000
  84 #define HDMI_REKEY_DEFAULT 56
  85
  86 enum {
  87         AUTO = 0,
  88         SPDIF,
  89         HDA,
  90 };
  91
  92 static inline u32 tegra_hdmi_readl(struct tegra_hdmi *hdmi,
  93                                    unsigned long offset)
  94 {
  95         return readl(hdmi->regs + (offset << 2));
  96 }
  97
  98 static inline void tegra_hdmi_writel(struct tegra_hdmi *hdmi, u32 value,
  99                                      unsigned long offset)
 100 {
 101         writel(value, hdmi->regs + (offset << 2));
 102 }
 103
 104 struct tegra_hdmi_audio_config {
 105         unsigned int pclk;
 106         unsigned int n;
 107         unsigned int cts;
 108         unsigned int aval;
 109 };
 110
 111 static const struct tegra_hdmi_audio_config tegra_hdmi_audio_32k[] = {
 112         {  25200000, 4096,  25200, 24000 },
 113         {  27000000, 4096,  27000, 24000 },
 114         {  74250000, 4096,  74250, 24000 },
 115         { 148500000, 4096, 148500, 24000 },
 116         {         0,    0,      0,     0 },
 117 };
 118
 119 static const struct tegra_hdmi_audio_config tegra_hdmi_audio_44_1k[] = {
 120         {  25200000, 5880,  26250, 25000 },
 121         {  27000000, 5880,  28125, 25000 },
 122         {  74250000, 4704,  61875, 20000 },
 123         { 148500000, 4704, 123750, 20000 },
 124         {         0,    0,      0,     0 },
 125 };
 126
 127 static const struct tegra_hdmi_audio_config tegra_hdmi_audio_48k[] = {
 128         {  25200000, 6144,  25200, 24000 },
 129         {  27000000, 6144,  27000, 24000 },
 130         {  74250000, 6144,  74250, 24000 },
 131         { 148500000, 6144, 148500, 24000 },
 132         {         0,    0,      0,     0 },
 133 };
 134
 135 static const struct tegra_hdmi_audio_config tegra_hdmi_audio_88_2k[] = {
 136         {  25200000, 11760,  26250, 25000 },
 137         {  27000000, 11760,  28125, 25000 },
 138         {  74250000,  9408,  61875, 20000 },
 139         { 148500000,  9408, 123750, 20000 },
 140         {         0,     0,      0,     0 },
 141 };
 142
 143 static const struct tegra_hdmi_audio_config tegra_hdmi_audio_96k[] = {
 144         {  25200000, 12288,  25200, 24000 },
 145         {  27000000, 12288,  27000, 24000 },
 146         {  74250000, 12288,  74250, 24000 },
 147         { 148500000, 12288, 148500, 24000 },
 148         {         0,     0,      0,     0 },
 149 };
 150
 151 static const struct tegra_hdmi_audio_config tegra_hdmi_audio_176_4k[] = {
 152         {  25200000, 23520,  26250, 25000 },
 153         {  27000000, 23520,  28125, 25000 },
 154         {  74250000, 18816,  61875, 20000 },
 155         { 148500000, 18816, 123750, 20000 },
 156         {         0,     0,      0,     0 },
 157 };
 158
 159 static const struct tegra_hdmi_audio_config tegra_hdmi_audio_192k[] = {
 160         {  25200000, 24576,  25200, 24000 },
 161         {  27000000, 24576,  27000, 24000 },
 162         {  74250000, 24576,  74250, 24000 },
 163         { 148500000, 24576, 148500, 24000 },
 164         {         0,     0,      0,     0 },
 165 };
 166
 167 static const struct tmds_config tegra20_tmds_config[] = {
 168         { /* slow pixel clock modes */
 169                 .pclk = 27000000,
 170                 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
 171                         SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) |
 172                         SOR_PLL_TX_REG_LOAD(3),
 173                 .pll1 = SOR_PLL_TMDS_TERM_ENABLE,
 174                 .pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) |
 175                         PE_CURRENT1(PE_CURRENT_0_0_mA) |
 176                         PE_CURRENT2(PE_CURRENT_0_0_mA) |
 177                         PE_CURRENT3(PE_CURRENT_0_0_mA),
 178                 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) |
 179                         DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) |
 180                         DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) |
 181                         DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA),
 182         },
 183         { /* high pixel clock modes */
 184                 .pclk = UINT_MAX,
 185                 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
 186                         SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) |
 187                         SOR_PLL_TX_REG_LOAD(3),
 188                 .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
 189                 .pe_current = PE_CURRENT0(PE_CURRENT_6_0_mA) |
 190                         PE_CURRENT1(PE_CURRENT_6_0_mA) |
 191                         PE_CURRENT2(PE_CURRENT_6_0_mA) |
 192                         PE_CURRENT3(PE_CURRENT_6_0_mA),
 193                 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) |
 194                         DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) |
 195                         DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) |
 196                         DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA),
 197         },
 198 };
 199
 200 static const struct tmds_config tegra30_tmds_config[] = {
 201         { /* 480p modes */
 202                 .pclk = 27000000,
 203                 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
 204                         SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) |
 205                         SOR_PLL_TX_REG_LOAD(0),
 206                 .pll1 = SOR_PLL_TMDS_TERM_ENABLE,
 207                 .pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) |
 208                         PE_CURRENT1(PE_CURRENT_0_0_mA) |
 209                         PE_CURRENT2(PE_CURRENT_0_0_mA) |
 210                         PE_CURRENT3(PE_CURRENT_0_0_mA),
 211                 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
 212                         DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
 213                         DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
 214                         DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
 215         }, { /* 720p modes */
 216                 .pclk = 74250000,
 217                 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
 218                         SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) |
 219                         SOR_PLL_TX_REG_LOAD(0),
 220                 .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
 221                 .pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) |
 222                         PE_CURRENT1(PE_CURRENT_5_0_mA) |
 223                         PE_CURRENT2(PE_CURRENT_5_0_mA) |
 224                         PE_CURRENT3(PE_CURRENT_5_0_mA),
 225                 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
 226                         DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
 227                         DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
 228                         DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
 229         }, { /* 1080p modes */
 230                 .pclk = UINT_MAX,
 231                 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
 232                         SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(3) |
 233                         SOR_PLL_TX_REG_LOAD(0),
 234                 .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
 235                 .pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) |
 236                         PE_CURRENT1(PE_CURRENT_5_0_mA) |
 237                         PE_CURRENT2(PE_CURRENT_5_0_mA) |
 238                         PE_CURRENT3(PE_CURRENT_5_0_mA),
 239                 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
 240                         DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
 241                         DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
 242                         DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
 243         },
 244 };
 245
 246 static const struct tmds_config tegra114_tmds_config[] = {
 247         { /* 480p/576p / 25.2MHz/27MHz modes */
 248                 .pclk = 27000000,
 249                 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
 250                         SOR_PLL_VCOCAP(0) | SOR_PLL_RESISTORSEL,
 251                 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(0),
 252                 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
 253                         PE_CURRENT1(PE_CURRENT_0_mA_T114) |
 254                         PE_CURRENT2(PE_CURRENT_0_mA_T114) |
 255                         PE_CURRENT3(PE_CURRENT_0_mA_T114),
 256                 .drive_current =
 257                         DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
 258                         DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
 259                         DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
 260                         DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
 261                 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
 262                         PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
 263                         PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
 264                         PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
 265         }, { /* 720p / 74.25MHz modes */
 266                 .pclk = 74250000,
 267                 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
 268                         SOR_PLL_VCOCAP(1) | SOR_PLL_RESISTORSEL,
 269                 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
 270                         SOR_PLL_TMDS_TERMADJ(0),
 271                 .pe_current = PE_CURRENT0(PE_CURRENT_15_mA_T114) |
 272                         PE_CURRENT1(PE_CURRENT_15_mA_T114) |
 273                         PE_CURRENT2(PE_CURRENT_15_mA_T114) |
 274                         PE_CURRENT3(PE_CURRENT_15_mA_T114),
 275                 .drive_current =
 276                         DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
 277                         DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
 278                         DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
 279                         DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
 280                 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
 281                         PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
 282                         PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
 283                         PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
 284         }, { /* 1080p / 148.5MHz modes */
 285                 .pclk = 148500000,
 286                 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
 287                         SOR_PLL_VCOCAP(3) | SOR_PLL_RESISTORSEL,
 288                 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
 289                         SOR_PLL_TMDS_TERMADJ(0),
 290                 .pe_current = PE_CURRENT0(PE_CURRENT_10_mA_T114) |
 291                         PE_CURRENT1(PE_CURRENT_10_mA_T114) |
 292                         PE_CURRENT2(PE_CURRENT_10_mA_T114) |
 293                         PE_CURRENT3(PE_CURRENT_10_mA_T114),
 294                 .drive_current =
 295                         DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_12_400_mA_T114) |
 296                         DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_12_400_mA_T114) |
 297                         DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_12_400_mA_T114) |
 298                         DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_12_400_mA_T114),
 299                 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
 300                         PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
 301                         PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
 302                         PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
 303         }, { /* 225/297MHz modes */
 304                 .pclk = UINT_MAX,
 305                 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
 306                         SOR_PLL_VCOCAP(0xf) | SOR_PLL_RESISTORSEL,
 307                 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(7)
 308                         | SOR_PLL_TMDS_TERM_ENABLE,
 309                 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
 310                         PE_CURRENT1(PE_CURRENT_0_mA_T114) |
 311                         PE_CURRENT2(PE_CURRENT_0_mA_T114) |
 312                         PE_CURRENT3(PE_CURRENT_0_mA_T114),
 313                 .drive_current =
 314                         DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_25_200_mA_T114) |
 315                         DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_25_200_mA_T114) |
 316                         DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_25_200_mA_T114) |
 317                         DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_19_200_mA_T114),
 318                 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_3_000_mA) |
 319                         PEAK_CURRENT_LANE1(PEAK_CURRENT_3_000_mA) |
 320                         PEAK_CURRENT_LANE2(PEAK_CURRENT_3_000_mA) |
 321                         PEAK_CURRENT_LANE3(PEAK_CURRENT_0_800_mA),
 322         },
 323 };
 324
 325 static const struct tmds_config tegra124_tmds_config[] = {
 326         { /* 480p/576p / 25.2MHz/27MHz modes */
 327                 .pclk = 27000000,
 328                 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
 329                         SOR_PLL_VCOCAP(0) | SOR_PLL_RESISTORSEL,
 330                 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(0),
 331                 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
 332                         PE_CURRENT1(PE_CURRENT_0_mA_T114) |
 333                         PE_CURRENT2(PE_CURRENT_0_mA_T114) |
 334                         PE_CURRENT3(PE_CURRENT_0_mA_T114),
 335                 .drive_current =
 336                         DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
 337                         DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
 338                         DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
 339                         DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
 340                 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
 341                         PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
 342                         PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
 343                         PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
 344         }, { /* 720p / 74.25MHz modes */
 345                 .pclk = 74250000,
 346                 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
 347                         SOR_PLL_VCOCAP(1) | SOR_PLL_RESISTORSEL,
 348                 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
 349                         SOR_PLL_TMDS_TERMADJ(0),
 350                 .pe_current = PE_CURRENT0(PE_CURRENT_15_mA_T114) |
 351                         PE_CURRENT1(PE_CURRENT_15_mA_T114) |
 352                         PE_CURRENT2(PE_CURRENT_15_mA_T114) |
 353                         PE_CURRENT3(PE_CURRENT_15_mA_T114),
 354                 .drive_current =
 355                         DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
 356                         DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
 357                         DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
 358                         DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
 359                 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
 360                         PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
 361                         PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
 362                         PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
 363         }, { /* 1080p / 148.5MHz modes */
 364                 .pclk = 148500000,
 365                 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
 366                         SOR_PLL_VCOCAP(3) | SOR_PLL_RESISTORSEL,
 367                 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
 368                         SOR_PLL_TMDS_TERMADJ(0),
 369                 .pe_current = PE_CURRENT0(PE_CURRENT_10_mA_T114) |
 370                         PE_CURRENT1(PE_CURRENT_10_mA_T114) |
 371                         PE_CURRENT2(PE_CURRENT_10_mA_T114) |
 372                         PE_CURRENT3(PE_CURRENT_10_mA_T114),
 373                 .drive_current =
 374                         DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_12_400_mA_T114) |
 375                         DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_12_400_mA_T114) |
 376                         DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_12_400_mA_T114) |
 377                         DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_12_400_mA_T114),
 378                 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
 379                         PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
 380                         PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
 381                         PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
 382         }, { /* 225/297MHz modes */
 383                 .pclk = UINT_MAX,
 384                 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
 385                         SOR_PLL_VCOCAP(0xf) | SOR_PLL_RESISTORSEL,
 386                 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(7)
 387                         | SOR_PLL_TMDS_TERM_ENABLE,
 388                 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
 389                         PE_CURRENT1(PE_CURRENT_0_mA_T114) |
 390                         PE_CURRENT2(PE_CURRENT_0_mA_T114) |
 391                         PE_CURRENT3(PE_CURRENT_0_mA_T114),
 392                 .drive_current =
 393                         DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_25_200_mA_T114) |
 394                         DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_25_200_mA_T114) |
 395                         DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_25_200_mA_T114) |
 396                         DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_19_200_mA_T114),
 397                 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_3_000_mA) |
 398                         PEAK_CURRENT_LANE1(PEAK_CURRENT_3_000_mA) |
 399                         PEAK_CURRENT_LANE2(PEAK_CURRENT_3_000_mA) |
 400                         PEAK_CURRENT_LANE3(PEAK_CURRENT_0_800_mA),
 401         },
 402 };
 403
 404 static const struct tegra_hdmi_audio_config *
 405 tegra_hdmi_get_audio_config(unsigned int audio_freq, unsigned int pclk)
 406 {
 407         const struct tegra_hdmi_audio_config *table;
 408
 409         switch (audio_freq) {
 410         case 32000:
 411                 table = tegra_hdmi_audio_32k;
 412                 break;
 413
 414         case 44100:
 415                 table = tegra_hdmi_audio_44_1k;
 416                 break;
 417
 418         case 48000:
 419                 table = tegra_hdmi_audio_48k;
 420                 break;
 421
 422         case 88200:
 423                 table = tegra_hdmi_audio_88_2k;
 424                 break;
 425
 426         case 96000:
 427                 table = tegra_hdmi_audio_96k;
 428                 break;
 429
 430         case 176400:
 431                 table = tegra_hdmi_audio_176_4k;
 432                 break;
 433
 434         case 192000:
 435                 table = tegra_hdmi_audio_192k;
 436                 break;
 437
 438         default:
 439                 return NULL;
 440         }
 441
 442         while (table->pclk) {
 443                 if (table->pclk == pclk)
 444                         return table;
 445
 446                 table++;
 447         }
 448
 449         return NULL;
 450 }
 451
 452 static void tegra_hdmi_setup_audio_fs_tables(struct tegra_hdmi *hdmi)
 453 {
 454         const unsigned int freqs[] = {
 455                 32000, 44100, 48000, 88200, 96000, 176400, 192000
 456         };
 457         unsigned int i;
 458
 459         for (i = 0; i < ARRAY_SIZE(freqs); i++) {
 460                 unsigned int f = freqs[i];
 461                 unsigned int eight_half;
 462                 unsigned int delta;
 463                 u32 value;
 464
 465                 if (f > 96000)
 466                         delta = 2;
 467                 else if (f > 48000)
 468                         delta = 6;
 469                 else
 470                         delta = 9;
 471
 472                 eight_half = (8 * HDMI_AUDIOCLK_FREQ) / (f * 128);
 473                 value = AUDIO_FS_LOW(eight_half - delta) |
 474                         AUDIO_FS_HIGH(eight_half + delta);
 475                 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_FS(i));
 476         }
 477 }
 478
 479 static int tegra_hdmi_setup_audio(struct tegra_hdmi *hdmi, unsigned int pclk)
 480 {
 481         struct device_node *node = hdmi->dev->of_node;
 482         const struct tegra_hdmi_audio_config *config;
 483         unsigned int offset = 0;
 484         u32 value;
 485
 486         switch (hdmi->audio_source) {
 487         case HDA:
 488                 value = AUDIO_CNTRL0_SOURCE_SELECT_HDAL;
 489                 break;
 490
 491         case SPDIF:
 492                 value = AUDIO_CNTRL0_SOURCE_SELECT_SPDIF;
 493                 break;
 494
 495         default:
 496                 value = AUDIO_CNTRL0_SOURCE_SELECT_AUTO;
 497                 break;
 498         }
 499
 500         if (of_device_is_compatible(node, "nvidia,tegra30-hdmi")) {
 501                 value |= AUDIO_CNTRL0_ERROR_TOLERANCE(6) |
 502                          AUDIO_CNTRL0_FRAMES_PER_BLOCK(0xc0);
 503                 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_CNTRL0);
 504         } else {
 505                 value |= AUDIO_CNTRL0_INJECT_NULLSMPL;
 506                 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_CNTRL0);
 507
 508                 value = AUDIO_CNTRL0_ERROR_TOLERANCE(6) |
 509                         AUDIO_CNTRL0_FRAMES_PER_BLOCK(0xc0);
 510                 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_CNTRL0);
 511         }
 512
 513         config = tegra_hdmi_get_audio_config(hdmi->audio_freq, pclk);
 514         if (!config) {
 515                 dev_err(hdmi->dev, "cannot set audio to %u at %u pclk\n",
 516                         hdmi->audio_freq, pclk);
 517                 return -EINVAL;
 518         }
 519
 520         tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_HDMI_ACR_CTRL);
 521
 522         value = AUDIO_N_RESETF | AUDIO_N_GENERATE_ALTERNATE |
 523                 AUDIO_N_VALUE(config->n - 1);
 524         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N);
 525
 526         tegra_hdmi_writel(hdmi, ACR_SUBPACK_N(config->n) | ACR_ENABLE,
 527                           HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH);
 528
 529         value = ACR_SUBPACK_CTS(config->cts);
 530         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW);
 531
 532         value = SPARE_HW_CTS | SPARE_FORCE_SW_CTS | SPARE_CTS_RESET_VAL(1);
 533         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_SPARE);
 534
 535         value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_AUDIO_N);
 536         value &= ~AUDIO_N_RESETF;
 537         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N);
 538
 539         if (of_device_is_compatible(node, "nvidia,tegra30-hdmi")) {
 540                 switch (hdmi->audio_freq) {
 541                 case 32000:
 542                         offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0320;
 543                         break;
 544
 545                 case 44100:
 546                         offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0441;
 547                         break;
 548
 549                 case 48000:
 550                         offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0480;
 551                         break;
 552
 553                 case 88200:
 554                         offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0882;
 555                         break;
 556
 557                 case 96000:
 558                         offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0960;
 559                         break;
 560
 561                 case 176400:
 562                         offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_1764;
 563                         break;
 564
 565                 case 192000:
 566                         offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_1920;
 567                         break;
 568                 }
 569
 570                 tegra_hdmi_writel(hdmi, config->aval, offset);
 571         }
 572
 573         tegra_hdmi_setup_audio_fs_tables(hdmi);
 574
 575         return 0;
 576 }
 577
 578 static inline u32 tegra_hdmi_subpack(const u8 *ptr, size_t size)
 579 {
 580         u32 value = 0;
 581         size_t i;
 582
 583         for (i = size; i > 0; i--)
 584                 value = (value << 8) | ptr[i - 1];
 585
 586         return value;
 587 }
 588
 589 static void tegra_hdmi_write_infopack(struct tegra_hdmi *hdmi, const void *data,
 590                                       size_t size)
 591 {
 592         const u8 *ptr = data;
 593         unsigned long offset;
 594         size_t i, j;
 595         u32 value;
 596
 597         switch (ptr[0]) {
 598         case HDMI_INFOFRAME_TYPE_AVI:
 599                 offset = HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER;
 600                 break;
 601
 602         case HDMI_INFOFRAME_TYPE_AUDIO:
 603                 offset = HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER;
 604                 break;
 605
 606         case HDMI_INFOFRAME_TYPE_VENDOR:
 607                 offset = HDMI_NV_PDISP_HDMI_GENERIC_HEADER;
 608                 break;
 609
 610         default:
 611                 dev_err(hdmi->dev, "unsupported infoframe type: %02x\n",
 612                         ptr[0]);
 613                 return;
 614         }
 615
 616         value = INFOFRAME_HEADER_TYPE(ptr[0]) |
 617                 INFOFRAME_HEADER_VERSION(ptr[1]) |
 618                 INFOFRAME_HEADER_LEN(ptr[2]);
 619         tegra_hdmi_writel(hdmi, value, offset);
 620         offset++;
 621
 622         /*
 623          * Each subpack contains 7 bytes, divided into:
 624          * - subpack_low: bytes 0 - 3
 625          * - subpack_high: bytes 4 - 6 (with byte 7 padded to 0x00)
 626          */
 627         for (i = 3, j = 0; i < size; i += 7, j += 8) {
 628                 size_t rem = size - i, num = min_t(size_t, rem, 4);
 629
 630                 value = tegra_hdmi_subpack(&ptr[i], num);
 631                 tegra_hdmi_writel(hdmi, value, offset++);
 632
 633                 num = min_t(size_t, rem - num, 3);
 634
 635                 value = tegra_hdmi_subpack(&ptr[i + 4], num);
 636                 tegra_hdmi_writel(hdmi, value, offset++);
 637         }
 638 }
 639
 640 static void tegra_hdmi_setup_avi_infoframe(struct tegra_hdmi *hdmi,
 641                                            struct drm_display_mode *mode)
 642 {
 643         struct hdmi_avi_infoframe frame;
 644         u8 buffer[17];
 645         ssize_t err;
 646
 647         if (hdmi->dvi) {
 648                 tegra_hdmi_writel(hdmi, 0,
 649                                   HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
 650                 return;
 651         }
 652
 653         err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
 654         if (err < 0) {
 655                 dev_err(hdmi->dev, "failed to setup AVI infoframe: %zd\n", err);
 656                 return;
 657         }
 658
 659         err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
 660         if (err < 0) {
 661                 dev_err(hdmi->dev, "failed to pack AVI infoframe: %zd\n", err);
 662                 return;
 663         }
 664
 665         tegra_hdmi_write_infopack(hdmi, buffer, err);
 666
 667         tegra_hdmi_writel(hdmi, INFOFRAME_CTRL_ENABLE,
 668                           HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
 669 }
 670
 671 static void tegra_hdmi_setup_audio_infoframe(struct tegra_hdmi *hdmi)
 672 {
 673         struct hdmi_audio_infoframe frame;
 674         u8 buffer[14];
 675         ssize_t err;
 676
 677         if (hdmi->dvi) {
 678                 tegra_hdmi_writel(hdmi, 0,
 679                                   HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
 680                 return;
 681         }
 682
 683         err = hdmi_audio_infoframe_init(&frame);
 684         if (err < 0) {
 685                 dev_err(hdmi->dev, "failed to setup audio infoframe: %zd\n",
 686                         err);
 687                 return;
 688         }
 689
 690         frame.channels = 2;
 691
 692         err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
 693         if (err < 0) {
 694                 dev_err(hdmi->dev, "failed to pack audio infoframe: %zd\n",
 695                         err);
 696                 return;
 697         }
 698
 699         /*
 700          * The audio infoframe has only one set of subpack registers, so the
 701          * infoframe needs to be truncated. One set of subpack registers can
 702          * contain 7 bytes. Including the 3 byte header only the first 10
 703          * bytes can be programmed.
 704          */
 705         tegra_hdmi_write_infopack(hdmi, buffer, min_t(size_t, 10, err));
 706
 707         tegra_hdmi_writel(hdmi, INFOFRAME_CTRL_ENABLE,
 708                           HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
 709 }
 710
 711 static void tegra_hdmi_setup_stereo_infoframe(struct tegra_hdmi *hdmi)
 712 {
 713         struct hdmi_vendor_infoframe frame;
 714         u8 buffer[10];
 715         ssize_t err;
 716         u32 value;
 717
 718         if (!hdmi->stereo) {
 719                 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
 720                 value &= ~GENERIC_CTRL_ENABLE;
 721                 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
 722                 return;
 723         }
 724
 725         hdmi_vendor_infoframe_init(&frame);
 726         frame.s3d_struct = HDMI_3D_STRUCTURE_FRAME_PACKING;
 727
 728         err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
 729         if (err < 0) {
 730                 dev_err(hdmi->dev, "failed to pack vendor infoframe: %zd\n",
 731                         err);
 732                 return;
 733         }
 734
 735         tegra_hdmi_write_infopack(hdmi, buffer, err);
 736
 737         value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
 738         value |= GENERIC_CTRL_ENABLE;
 739         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
 740 }
 741
 742 static void tegra_hdmi_setup_tmds(struct tegra_hdmi *hdmi,
 743                                   const struct tmds_config *tmds)
 744 {
 745         u32 value;
 746
 747         tegra_hdmi_writel(hdmi, tmds->pll0, HDMI_NV_PDISP_SOR_PLL0);
 748         tegra_hdmi_writel(hdmi, tmds->pll1, HDMI_NV_PDISP_SOR_PLL1);
 749         tegra_hdmi_writel(hdmi, tmds->pe_current, HDMI_NV_PDISP_PE_CURRENT);
 750
 751         tegra_hdmi_writel(hdmi, tmds->drive_current,
 752                           HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT);
 753
 754         value = tegra_hdmi_readl(hdmi, hdmi->config->fuse_override_offset);
 755         value |= hdmi->config->fuse_override_value;
 756         tegra_hdmi_writel(hdmi, value, hdmi->config->fuse_override_offset);
 757
 758         if (hdmi->config->has_sor_io_peak_current)
 759                 tegra_hdmi_writel(hdmi, tmds->peak_current,
 760                                   HDMI_NV_PDISP_SOR_IO_PEAK_CURRENT);
 761 }
 762
 763 static bool tegra_output_is_hdmi(struct tegra_output *output)
 764 {
 765         struct edid *edid;
 766
 767         if (!output->connector.edid_blob_ptr)
 768                 return false;
 769
 770         edid = (struct edid *)output->connector.edid_blob_ptr->data;
 771
 772         return drm_detect_hdmi_monitor(edid);
 773 }
 774
 775 static void tegra_hdmi_connector_dpms(struct drm_connector *connector,
 776                                       int mode)
 777 {
 778 }
 779
 780 static const struct drm_connector_funcs tegra_hdmi_connector_funcs = {
 781         .dpms = tegra_hdmi_connector_dpms,
 782         .reset = drm_atomic_helper_connector_reset,
 783         .detect = tegra_output_connector_detect,
 784         .fill_modes = drm_helper_probe_single_connector_modes,
 785         .destroy = tegra_output_connector_destroy,
 786         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 787         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 788 };
 789
 790 static enum drm_mode_status
 791 tegra_hdmi_connector_mode_valid(struct drm_connector *connector,
 792                                 struct drm_display_mode *mode)
 793 {
 794         struct tegra_output *output = connector_to_output(connector);
 795         struct tegra_hdmi *hdmi = to_hdmi(output);
 796         unsigned long pclk = mode->clock * 1000;
 797         enum drm_mode_status status = MODE_OK;
 798         struct clk *parent;
 799         long err;
 800
 801         parent = clk_get_parent(hdmi->clk_parent);
 802
 803         err = clk_round_rate(parent, pclk * 4);
 804         if (err <= 0)
 805                 status = MODE_NOCLOCK;
 806
 807         return status;
 808 }
 809
 810 static const struct drm_connector_helper_funcs
 811 tegra_hdmi_connector_helper_funcs = {
 812         .get_modes = tegra_output_connector_get_modes,
 813         .mode_valid = tegra_hdmi_connector_mode_valid,
 814         .best_encoder = tegra_output_connector_best_encoder,
 815 };
 816
 817 static const struct drm_encoder_funcs tegra_hdmi_encoder_funcs = {
 818         .destroy = tegra_output_encoder_destroy,
 819 };
 820
 821 static void tegra_hdmi_encoder_dpms(struct drm_encoder *encoder, int mode)
 822 {
 823 }
 824
 825 static void tegra_hdmi_encoder_prepare(struct drm_encoder *encoder)
 826 {
 827 }
 828
 829 static void tegra_hdmi_encoder_commit(struct drm_encoder *encoder)
 830 {
 831 }
 832
 833 static void tegra_hdmi_encoder_mode_set(struct drm_encoder *encoder,
 834                                         struct drm_display_mode *mode,
 835                                         struct drm_display_mode *adjusted)
 836 {
 837         unsigned int h_sync_width, h_front_porch, h_back_porch, i, rekey;
 838         struct tegra_output *output = encoder_to_output(encoder);
 839         struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
 840         struct device_node *node = output->dev->of_node;
 841         struct tegra_hdmi *hdmi = to_hdmi(output);
 842         unsigned int pulse_start, div82, pclk;
 843         int retries = 1000;
 844         u32 value;
 845         int err;
 846
 847         hdmi->dvi = !tegra_output_is_hdmi(output);
 848
 849         pclk = mode->clock * 1000;
 850         h_sync_width = mode->hsync_end - mode->hsync_start;
 851         h_back_porch = mode->htotal - mode->hsync_end;
 852         h_front_porch = mode->hsync_start - mode->hdisplay;
 853
 854         err = clk_set_rate(hdmi->clk, pclk);
 855         if (err < 0) {
 856                 dev_err(hdmi->dev, "failed to set HDMI clock frequency: %d\n",
 857                         err);
 858         }
 859
 860         DRM_DEBUG_KMS("HDMI clock rate: %lu Hz\n", clk_get_rate(hdmi->clk));
 861
 862         /* power up sequence */
 863         value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PLL0);
 864         value &= ~SOR_PLL_PDBG;
 865         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_PLL0);
 866
 867         usleep_range(10, 20);
 868
 869         value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PLL0);
 870         value &= ~SOR_PLL_PWR;
 871         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_PLL0);
 872
 873         tegra_dc_writel(dc, VSYNC_H_POSITION(1),
 874                         DC_DISP_DISP_TIMING_OPTIONS);
 875         tegra_dc_writel(dc, DITHER_CONTROL_DISABLE | BASE_COLOR_SIZE888,
 876                         DC_DISP_DISP_COLOR_CONTROL);
 877
 878         /* video_preamble uses h_pulse2 */
 879         pulse_start = 1 + h_sync_width + h_back_porch - 10;
 880
 881         tegra_dc_writel(dc, H_PULSE_2_ENABLE, DC_DISP_DISP_SIGNAL_OPTIONS0);
 882
 883         value = PULSE_MODE_NORMAL | PULSE_POLARITY_HIGH | PULSE_QUAL_VACTIVE |
 884                 PULSE_LAST_END_A;
 885         tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_CONTROL);
 886
 887         value = PULSE_START(pulse_start) | PULSE_END(pulse_start + 8);
 888         tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_POSITION_A);
 889
 890         value = VSYNC_WINDOW_END(0x210) | VSYNC_WINDOW_START(0x200) |
 891                 VSYNC_WINDOW_ENABLE;
 892         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_VSYNC_WINDOW);
 893
 894         if (dc->pipe)
 895                 value = HDMI_SRC_DISPLAYB;
 896         else
 897                 value = HDMI_SRC_DISPLAYA;
 898
 899         if ((mode->hdisplay == 720) && ((mode->vdisplay == 480) ||
 900                                         (mode->vdisplay == 576)))
 901                 tegra_hdmi_writel(hdmi,
 902                                   value | ARM_VIDEO_RANGE_FULL,
 903                                   HDMI_NV_PDISP_INPUT_CONTROL);
 904         else
 905                 tegra_hdmi_writel(hdmi,
 906                                   value | ARM_VIDEO_RANGE_LIMITED,
 907                                   HDMI_NV_PDISP_INPUT_CONTROL);
 908
 909         div82 = clk_get_rate(hdmi->clk) / 1000000 * 4;
 910         value = SOR_REFCLK_DIV_INT(div82 >> 2) | SOR_REFCLK_DIV_FRAC(div82);
 911         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_REFCLK);
 912
 913         if (!hdmi->dvi) {
 914                 err = tegra_hdmi_setup_audio(hdmi, pclk);
 915                 if (err < 0)
 916                         hdmi->dvi = true;
 917         }
 918
 919         if (of_device_is_compatible(node, "nvidia,tegra20-hdmi")) {
 920                 /*
 921                  * TODO: add ELD support
 922                  */
 923         }
 924
 925         rekey = HDMI_REKEY_DEFAULT;
 926         value = HDMI_CTRL_REKEY(rekey);
 927         value |= HDMI_CTRL_MAX_AC_PACKET((h_sync_width + h_back_porch +
 928                                           h_front_porch - rekey - 18) / 32);
 929
 930         if (!hdmi->dvi)
 931                 value |= HDMI_CTRL_ENABLE;
 932
 933         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_CTRL);
 934
 935         if (hdmi->dvi)
 936                 tegra_hdmi_writel(hdmi, 0x0,
 937                                   HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
 938         else
 939                 tegra_hdmi_writel(hdmi, GENERIC_CTRL_AUDIO,
 940                                   HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
 941
 942         tegra_hdmi_setup_avi_infoframe(hdmi, mode);
 943         tegra_hdmi_setup_audio_infoframe(hdmi);
 944         tegra_hdmi_setup_stereo_infoframe(hdmi);
 945
 946         /* TMDS CONFIG */
 947         for (i = 0; i < hdmi->config->num_tmds; i++) {
 948                 if (pclk <= hdmi->config->tmds[i].pclk) {
 949                         tegra_hdmi_setup_tmds(hdmi, &hdmi->config->tmds[i]);
 950                         break;
 951                 }
 952         }
 953
 954         tegra_hdmi_writel(hdmi,
 955                           SOR_SEQ_PU_PC(0) |
 956                           SOR_SEQ_PU_PC_ALT(0) |
 957                           SOR_SEQ_PD_PC(8) |
 958                           SOR_SEQ_PD_PC_ALT(8),
 959                           HDMI_NV_PDISP_SOR_SEQ_CTL);
 960
 961         value = SOR_SEQ_INST_WAIT_TIME(1) |
 962                 SOR_SEQ_INST_WAIT_UNITS_VSYNC |
 963                 SOR_SEQ_INST_HALT |
 964                 SOR_SEQ_INST_PIN_A_LOW |
 965                 SOR_SEQ_INST_PIN_B_LOW |
 966                 SOR_SEQ_INST_DRIVE_PWM_OUT_LO;
 967
 968         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(0));
 969         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(8));
 970
 971         value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_CSTM);
 972         value &= ~SOR_CSTM_ROTCLK(~0);
 973         value |= SOR_CSTM_ROTCLK(2);
 974         value |= SOR_CSTM_PLLDIV;
 975         value &= ~SOR_CSTM_LVDS_ENABLE;
 976         value &= ~SOR_CSTM_MODE_MASK;
 977         value |= SOR_CSTM_MODE_TMDS;
 978         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_CSTM);
 979
 980         /* start SOR */
 981         tegra_hdmi_writel(hdmi,
 982                           SOR_PWR_NORMAL_STATE_PU |
 983                           SOR_PWR_NORMAL_START_NORMAL |
 984                           SOR_PWR_SAFE_STATE_PD |
 985                           SOR_PWR_SETTING_NEW_TRIGGER,
 986                           HDMI_NV_PDISP_SOR_PWR);
 987         tegra_hdmi_writel(hdmi,
 988                           SOR_PWR_NORMAL_STATE_PU |
 989                           SOR_PWR_NORMAL_START_NORMAL |
 990                           SOR_PWR_SAFE_STATE_PD |
 991                           SOR_PWR_SETTING_NEW_DONE,
 992                           HDMI_NV_PDISP_SOR_PWR);
 993
 994         do {
 995                 BUG_ON(--retries < 0);
 996                 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PWR);
 997         } while (value & SOR_PWR_SETTING_NEW_PENDING);
 998
 999         value = SOR_STATE_ASY_CRCMODE_COMPLETE |
1000                 SOR_STATE_ASY_OWNER_HEAD0 |
1001                 SOR_STATE_ASY_SUBOWNER_BOTH |
1002                 SOR_STATE_ASY_PROTOCOL_SINGLE_TMDS_A |
1003                 SOR_STATE_ASY_DEPOL_POS;
1004
1005         /* setup sync polarities */
1006         if (mode->flags & DRM_MODE_FLAG_PHSYNC)
1007                 value |= SOR_STATE_ASY_HSYNCPOL_POS;
1008
1009         if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1010                 value |= SOR_STATE_ASY_HSYNCPOL_NEG;
1011
1012         if (mode->flags & DRM_MODE_FLAG_PVSYNC)
1013                 value |= SOR_STATE_ASY_VSYNCPOL_POS;
1014
1015         if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1016                 value |= SOR_STATE_ASY_VSYNCPOL_NEG;
1017
1018         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE2);
1019
1020         value = SOR_STATE_ASY_HEAD_OPMODE_AWAKE | SOR_STATE_ASY_ORMODE_NORMAL;
1021         tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE1);
1022
1023         tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0);
1024         tegra_hdmi_writel(hdmi, SOR_STATE_UPDATE, HDMI_NV_PDISP_SOR_STATE0);
1025         tegra_hdmi_writel(hdmi, value | SOR_STATE_ATTACHED,
1026                           HDMI_NV_PDISP_SOR_STATE1);
1027         tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0);
1028
1029         value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
1030         value |= HDMI_ENABLE;
1031         tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
1032
1033         tegra_dc_commit(dc);
1034
1035         /* TODO: add HDCP support */
1036 }
1037
1038 static void tegra_hdmi_encoder_disable(struct drm_encoder *encoder)
1039 {
1040         struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
1041         u32 value;
1042
1043         /*
1044          * The following accesses registers of the display controller, so make
1045          * sure it's only executed when the output is attached to one.
1046          */
1047         if (dc) {
1048                 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
1049                 value &= ~HDMI_ENABLE;
1050                 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
1051
1052                 tegra_dc_commit(dc);
1053         }
1054 }
1055
1056 static int
1057 tegra_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
1058                                 struct drm_crtc_state *crtc_state,
1059                                 struct drm_connector_state *conn_state)
1060 {
1061         struct tegra_output *output = encoder_to_output(encoder);
1062         struct tegra_dc *dc = to_tegra_dc(conn_state->crtc);
1063         unsigned long pclk = crtc_state->mode.clock * 1000;
1064         struct tegra_hdmi *hdmi = to_hdmi(output);
1065         int err;
1066
1067         err = tegra_dc_state_setup_clock(dc, crtc_state, hdmi->clk_parent,
1068                                          pclk, 0);
1069         if (err < 0) {
1070                 dev_err(output->dev, "failed to setup CRTC state: %d\n", err);
1071                 return err;
1072         }
1073
1074         return err;
1075 }
1076
1077 static const struct drm_encoder_helper_funcs tegra_hdmi_encoder_helper_funcs = {
1078         .dpms = tegra_hdmi_encoder_dpms,
1079         .prepare = tegra_hdmi_encoder_prepare,
1080         .commit = tegra_hdmi_encoder_commit,
1081         .mode_set = tegra_hdmi_encoder_mode_set,
1082         .disable = tegra_hdmi_encoder_disable,
1083         .atomic_check = tegra_hdmi_encoder_atomic_check,
1084 };
1085
1086 static int tegra_hdmi_show_regs(struct seq_file *s, void *data)
1087 {
1088         struct drm_info_node *node = s->private;
1089         struct tegra_hdmi *hdmi = node->info_ent->data;
1090         int err;
1091
1092         err = clk_prepare_enable(hdmi->clk);
1093         if (err)
1094                 return err;
1095
1096 #define DUMP_REG(name)                                          \
1097         seq_printf(s, "%-56s %#05x %08x\n", #name, name,        \
1098                    tegra_hdmi_readl(hdmi, name))
1099
1100         DUMP_REG(HDMI_CTXSW);
1101         DUMP_REG(HDMI_NV_PDISP_SOR_STATE0);
1102         DUMP_REG(HDMI_NV_PDISP_SOR_STATE1);
1103         DUMP_REG(HDMI_NV_PDISP_SOR_STATE2);
1104         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AN_MSB);
1105         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AN_LSB);
1106         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CN_MSB);
1107         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CN_LSB);
1108         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AKSV_MSB);
1109         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AKSV_LSB);
1110         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_BKSV_MSB);
1111         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_BKSV_LSB);
1112         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CKSV_MSB);
1113         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CKSV_LSB);
1114         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_DKSV_MSB);
1115         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_DKSV_LSB);
1116         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CTRL);
1117         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CMODE);
1118         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_MPRIME_MSB);
1119         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_MPRIME_LSB);
1120         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_SPRIME_MSB);
1121         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB2);
1122         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB1);
1123         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_RI);
1124         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CS_MSB);
1125         DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CS_LSB);
1126         DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU0);
1127         DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU_RDATA0);
1128         DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU1);
1129         DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU2);
1130         DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
1131         DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_STATUS);
1132         DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER);
1133         DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_LOW);
1134         DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_HIGH);
1135         DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
1136         DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_STATUS);
1137         DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER);
1138         DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_LOW);
1139         DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_HIGH);
1140         DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_LOW);
1141         DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_HIGH);
1142         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
1143         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_STATUS);
1144         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_HEADER);
1145         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_LOW);
1146         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_HIGH);
1147         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_LOW);
1148         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_HIGH);
1149         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_LOW);
1150         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_HIGH);
1151         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_LOW);
1152         DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_HIGH);
1153         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_CTRL);
1154         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_LOW);
1155         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_HIGH);
1156         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW);
1157         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH);
1158         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_LOW);
1159         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_HIGH);
1160         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_LOW);
1161         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_HIGH);
1162         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_LOW);
1163         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_HIGH);
1164         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_LOW);
1165         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_HIGH);
1166         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_LOW);
1167         DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_HIGH);
1168         DUMP_REG(HDMI_NV_PDISP_HDMI_CTRL);
1169         DUMP_REG(HDMI_NV_PDISP_HDMI_VSYNC_KEEPOUT);
1170         DUMP_REG(HDMI_NV_PDISP_HDMI_VSYNC_WINDOW);
1171         DUMP_REG(HDMI_NV_PDISP_HDMI_GCP_CTRL);
1172         DUMP_REG(HDMI_NV_PDISP_HDMI_GCP_STATUS);
1173         DUMP_REG(HDMI_NV_PDISP_HDMI_GCP_SUBPACK);
1174         DUMP_REG(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS1);
1175         DUMP_REG(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS2);
1176         DUMP_REG(HDMI_NV_PDISP_HDMI_EMU0);
1177         DUMP_REG(HDMI_NV_PDISP_HDMI_EMU1);
1178         DUMP_REG(HDMI_NV_PDISP_HDMI_EMU1_RDATA);
1179         DUMP_REG(HDMI_NV_PDISP_HDMI_SPARE);
1180         DUMP_REG(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS1);
1181         DUMP_REG(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS2);
1182         DUMP_REG(HDMI_NV_PDISP_HDMI_HDCPRIF_ROM_CTRL);
1183         DUMP_REG(HDMI_NV_PDISP_SOR_CAP);
1184         DUMP_REG(HDMI_NV_PDISP_SOR_PWR);
1185         DUMP_REG(HDMI_NV_PDISP_SOR_TEST);
1186         DUMP_REG(HDMI_NV_PDISP_SOR_PLL0);
1187         DUMP_REG(HDMI_NV_PDISP_SOR_PLL1);
1188         DUMP_REG(HDMI_NV_PDISP_SOR_PLL2);
1189         DUMP_REG(HDMI_NV_PDISP_SOR_CSTM);
1190         DUMP_REG(HDMI_NV_PDISP_SOR_LVDS);
1191         DUMP_REG(HDMI_NV_PDISP_SOR_CRCA);
1192         DUMP_REG(HDMI_NV_PDISP_SOR_CRCB);
1193         DUMP_REG(HDMI_NV_PDISP_SOR_BLANK);
1194         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_CTL);
1195         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(0));
1196         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(1));
1197         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(2));
1198         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(3));
1199         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(4));
1200         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(5));
1201         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(6));
1202         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(7));
1203         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(8));
1204         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(9));
1205         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(10));
1206         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(11));
1207         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(12));
1208         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(13));
1209         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(14));
1210         DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(15));
1211         DUMP_REG(HDMI_NV_PDISP_SOR_VCRCA0);
1212         DUMP_REG(HDMI_NV_PDISP_SOR_VCRCA1);
1213         DUMP_REG(HDMI_NV_PDISP_SOR_CCRCA0);
1214         DUMP_REG(HDMI_NV_PDISP_SOR_CCRCA1);
1215         DUMP_REG(HDMI_NV_PDISP_SOR_EDATAA0);
1216         DUMP_REG(HDMI_NV_PDISP_SOR_EDATAA1);
1217         DUMP_REG(HDMI_NV_PDISP_SOR_COUNTA0);
1218         DUMP_REG(HDMI_NV_PDISP_SOR_COUNTA1);
1219         DUMP_REG(HDMI_NV_PDISP_SOR_DEBUGA0);
1220         DUMP_REG(HDMI_NV_PDISP_SOR_DEBUGA1);
1221         DUMP_REG(HDMI_NV_PDISP_SOR_TRIG);
1222         DUMP_REG(HDMI_NV_PDISP_SOR_MSCHECK);
1223         DUMP_REG(HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT);
1224         DUMP_REG(HDMI_NV_PDISP_AUDIO_DEBUG0);
1225         DUMP_REG(HDMI_NV_PDISP_AUDIO_DEBUG1);
1226         DUMP_REG(HDMI_NV_PDISP_AUDIO_DEBUG2);
1227         DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(0));
1228         DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(1));
1229         DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(2));
1230         DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(3));
1231         DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(4));
1232         DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(5));
1233         DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(6));
1234         DUMP_REG(HDMI_NV_PDISP_AUDIO_PULSE_WIDTH);
1235         DUMP_REG(HDMI_NV_PDISP_AUDIO_THRESHOLD);
1236         DUMP_REG(HDMI_NV_PDISP_AUDIO_CNTRL0);
1237         DUMP_REG(HDMI_NV_PDISP_AUDIO_N);
1238         DUMP_REG(HDMI_NV_PDISP_HDCPRIF_ROM_TIMING);
1239         DUMP_REG(HDMI_NV_PDISP_SOR_REFCLK);
1240         DUMP_REG(HDMI_NV_PDISP_CRC_CONTROL);
1241         DUMP_REG(HDMI_NV_PDISP_INPUT_CONTROL);
1242         DUMP_REG(HDMI_NV_PDISP_SCRATCH);
1243         DUMP_REG(HDMI_NV_PDISP_PE_CURRENT);
1244         DUMP_REG(HDMI_NV_PDISP_KEY_CTRL);
1245         DUMP_REG(HDMI_NV_PDISP_KEY_DEBUG0);
1246         DUMP_REG(HDMI_NV_PDISP_KEY_DEBUG1);
1247         DUMP_REG(HDMI_NV_PDISP_KEY_DEBUG2);
1248         DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_0);
1249         DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_1);
1250         DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_2);
1251         DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_3);
1252         DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_TRIG);
1253         DUMP_REG(HDMI_NV_PDISP_KEY_SKEY_INDEX);
1254         DUMP_REG(HDMI_NV_PDISP_SOR_AUDIO_CNTRL0);
1255         DUMP_REG(HDMI_NV_PDISP_SOR_AUDIO_HDA_ELD_BUFWR);
1256         DUMP_REG(HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE);
1257         DUMP_REG(HDMI_NV_PDISP_SOR_IO_PEAK_CURRENT);
1258
1259 #undef DUMP_REG
1260
1261         clk_disable_unprepare(hdmi->clk);
1262
1263         return 0;
1264 }
1265
1266 static struct drm_info_list debugfs_files[] = {
1267         { "regs", tegra_hdmi_show_regs, 0, NULL },
1268 };
1269
1270 static int tegra_hdmi_debugfs_init(struct tegra_hdmi *hdmi,
1271                                    struct drm_minor *minor)
1272 {
1273         unsigned int i;
1274         int err;
1275
1276         hdmi->debugfs = debugfs_create_dir("hdmi", minor->debugfs_root);
1277         if (!hdmi->debugfs)
1278                 return -ENOMEM;
1279
1280         hdmi->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files),
1281                                       GFP_KERNEL);
1282         if (!hdmi->debugfs_files) {
1283                 err = -ENOMEM;
1284                 goto remove;
1285         }
1286
1287         for (i = 0; i < ARRAY_SIZE(debugfs_files); i++)
1288                 hdmi->debugfs_files[i].data = hdmi;
1289
1290         err = drm_debugfs_create_files(hdmi->debugfs_files,
1291                                        ARRAY_SIZE(debugfs_files),
1292                                        hdmi->debugfs, minor);
1293         if (err < 0)
1294                 goto free;
1295
1296         hdmi->minor = minor;
1297
1298         return 0;
1299
1300 free:
1301         kfree(hdmi->debugfs_files);
1302         hdmi->debugfs_files = NULL;
1303 remove:
1304         debugfs_remove(hdmi->debugfs);
1305         hdmi->debugfs = NULL;
1306
1307         return err;
1308 }
1309
1310 static void tegra_hdmi_debugfs_exit(struct tegra_hdmi *hdmi)
1311 {
1312         drm_debugfs_remove_files(hdmi->debugfs_files, ARRAY_SIZE(debugfs_files),
1313                                  hdmi->minor);
1314         hdmi->minor = NULL;
1315
1316         kfree(hdmi->debugfs_files);
1317         hdmi->debugfs_files = NULL;
1318
1319         debugfs_remove(hdmi->debugfs);
1320         hdmi->debugfs = NULL;
1321 }
1322
1323 static int tegra_hdmi_init(struct host1x_client *client)
1324 {
1325         struct drm_device *drm = dev_get_drvdata(client->parent);
1326         struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1327         int err;
1328
1329         hdmi->output.dev = client->dev;
1330
1331         drm_connector_init(drm, &hdmi->output.connector,
1332                            &tegra_hdmi_connector_funcs,
1333                            DRM_MODE_CONNECTOR_HDMIA);
1334         drm_connector_helper_add(&hdmi->output.connector,
1335                                  &tegra_hdmi_connector_helper_funcs);
1336         hdmi->output.connector.dpms = DRM_MODE_DPMS_OFF;
1337
1338         drm_encoder_init(drm, &hdmi->output.encoder, &tegra_hdmi_encoder_funcs,
1339                          DRM_MODE_ENCODER_TMDS);
1340         drm_encoder_helper_add(&hdmi->output.encoder,
1341                                &tegra_hdmi_encoder_helper_funcs);
1342
1343         drm_mode_connector_attach_encoder(&hdmi->output.connector,
1344                                           &hdmi->output.encoder);
1345         drm_connector_register(&hdmi->output.connector);
1346
1347         err = tegra_output_init(drm, &hdmi->output);
1348         if (err < 0) {
1349                 dev_err(client->dev, "failed to initialize output: %d\n", err);
1350                 return err;
1351         }
1352
1353         hdmi->output.encoder.possible_crtcs = 0x3;
1354
1355         if (IS_ENABLED(CONFIG_DEBUG_FS)) {
1356                 err = tegra_hdmi_debugfs_init(hdmi, drm->primary);
1357                 if (err < 0)
1358                         dev_err(client->dev, "debugfs setup failed: %d\n", err);
1359         }
1360
1361         err = regulator_enable(hdmi->hdmi);
1362         if (err < 0) {
1363                 dev_err(client->dev, "failed to enable HDMI regulator: %d\n",
1364                         err);
1365                 return err;
1366         }
1367
1368         err = regulator_enable(hdmi->pll);
1369         if (err < 0) {
1370                 dev_err(hdmi->dev, "failed to enable PLL regulator: %d\n", err);
1371                 return err;
1372         }
1373
1374         err = regulator_enable(hdmi->vdd);
1375         if (err < 0) {
1376                 dev_err(hdmi->dev, "failed to enable VDD regulator: %d\n", err);
1377                 return err;
1378         }
1379
1380         err = clk_prepare_enable(hdmi->clk);
1381         if (err < 0) {
1382                 dev_err(hdmi->dev, "failed to enable clock: %d\n", err);
1383                 return err;
1384         }
1385
1386         reset_control_deassert(hdmi->rst);
1387
1388         return 0;
1389 }
1390
1391 static int tegra_hdmi_exit(struct host1x_client *client)
1392 {
1393         struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1394
1395         tegra_output_exit(&hdmi->output);
1396
1397         reset_control_assert(hdmi->rst);
1398         clk_disable_unprepare(hdmi->clk);
1399
1400         regulator_disable(hdmi->vdd);
1401         regulator_disable(hdmi->pll);
1402         regulator_disable(hdmi->hdmi);
1403
1404         if (IS_ENABLED(CONFIG_DEBUG_FS))
1405                 tegra_hdmi_debugfs_exit(hdmi);
1406
1407         return 0;
1408 }
1409
1410 static const struct host1x_client_ops hdmi_client_ops = {
1411         .init = tegra_hdmi_init,
1412         .exit = tegra_hdmi_exit,
1413 };
1414
1415 static const struct tegra_hdmi_config tegra20_hdmi_config = {
1416         .tmds = tegra20_tmds_config,
1417         .num_tmds = ARRAY_SIZE(tegra20_tmds_config),
1418         .fuse_override_offset = HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT,
1419         .fuse_override_value = 1 << 31,
1420         .has_sor_io_peak_current = false,
1421 };
1422
1423 static const struct tegra_hdmi_config tegra30_hdmi_config = {
1424         .tmds = tegra30_tmds_config,
1425         .num_tmds = ARRAY_SIZE(tegra30_tmds_config),
1426         .fuse_override_offset = HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT,
1427         .fuse_override_value = 1 << 31,
1428         .has_sor_io_peak_current = false,
1429 };
1430
1431 static const struct tegra_hdmi_config tegra114_hdmi_config = {
1432         .tmds = tegra114_tmds_config,
1433         .num_tmds = ARRAY_SIZE(tegra114_tmds_config),
1434         .fuse_override_offset = HDMI_NV_PDISP_SOR_PAD_CTLS0,
1435         .fuse_override_value = 1 << 31,
1436         .has_sor_io_peak_current = true,
1437 };
1438
1439 static const struct tegra_hdmi_config tegra124_hdmi_config = {
1440         .tmds = tegra124_tmds_config,
1441         .num_tmds = ARRAY_SIZE(tegra124_tmds_config),
1442         .fuse_override_offset = HDMI_NV_PDISP_SOR_PAD_CTLS0,
1443         .fuse_override_value = 1 << 31,
1444         .has_sor_io_peak_current = true,
1445 };
1446
1447 static const struct of_device_id tegra_hdmi_of_match[] = {
1448         { .compatible = "nvidia,tegra124-hdmi", .data = &tegra124_hdmi_config },
1449         { .compatible = "nvidia,tegra114-hdmi", .data = &tegra114_hdmi_config },
1450         { .compatible = "nvidia,tegra30-hdmi", .data = &tegra30_hdmi_config },
1451         { .compatible = "nvidia,tegra20-hdmi", .data = &tegra20_hdmi_config },
1452         { },
1453 };
1454 MODULE_DEVICE_TABLE(of, tegra_hdmi_of_match);
1455
1456 static int tegra_hdmi_probe(struct platform_device *pdev)
1457 {
1458         const struct of_device_id *match;
1459         struct tegra_hdmi *hdmi;
1460         struct resource *regs;
1461         int err;
1462
1463         match = of_match_node(tegra_hdmi_of_match, pdev->dev.of_node);
1464         if (!match)
1465                 return -ENODEV;
1466
1467         hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
1468         if (!hdmi)
1469                 return -ENOMEM;
1470
1471         hdmi->config = match->data;
1472         hdmi->dev = &pdev->dev;
1473         hdmi->audio_source = AUTO;
1474         hdmi->audio_freq = 44100;
1475         hdmi->stereo = false;
1476         hdmi->dvi = false;
1477
1478         hdmi->clk = devm_clk_get(&pdev->dev, NULL);
1479         if (IS_ERR(hdmi->clk)) {
1480                 dev_err(&pdev->dev, "failed to get clock\n");
1481                 return PTR_ERR(hdmi->clk);
1482         }
1483
1484         hdmi->rst = devm_reset_control_get(&pdev->dev, "hdmi");
1485         if (IS_ERR(hdmi->rst)) {
1486                 dev_err(&pdev->dev, "failed to get reset\n");
1487                 return PTR_ERR(hdmi->rst);
1488         }
1489
1490         hdmi->clk_parent = devm_clk_get(&pdev->dev, "parent");
1491         if (IS_ERR(hdmi->clk_parent))
1492                 return PTR_ERR(hdmi->clk_parent);
1493
1494         err = clk_set_parent(hdmi->clk, hdmi->clk_parent);
1495         if (err < 0) {
1496                 dev_err(&pdev->dev, "failed to setup clocks: %d\n", err);
1497                 return err;
1498         }
1499
1500         hdmi->hdmi = devm_regulator_get(&pdev->dev, "hdmi");
1501         if (IS_ERR(hdmi->hdmi)) {
1502                 dev_err(&pdev->dev, "failed to get HDMI regulator\n");
1503                 return PTR_ERR(hdmi->hdmi);
1504         }
1505
1506         hdmi->pll = devm_regulator_get(&pdev->dev, "pll");
1507         if (IS_ERR(hdmi->pll)) {
1508                 dev_err(&pdev->dev, "failed to get PLL regulator\n");
1509                 return PTR_ERR(hdmi->pll);
1510         }
1511
1512         hdmi->vdd = devm_regulator_get(&pdev->dev, "vdd");
1513         if (IS_ERR(hdmi->vdd)) {
1514                 dev_err(&pdev->dev, "failed to get VDD regulator\n");
1515                 return PTR_ERR(hdmi->vdd);
1516         }
1517
1518         hdmi->output.dev = &pdev->dev;
1519
1520         err = tegra_output_probe(&hdmi->output);
1521         if (err < 0)
1522                 return err;
1523
1524         regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1525         hdmi->regs = devm_ioremap_resource(&pdev->dev, regs);
1526         if (IS_ERR(hdmi->regs))
1527                 return PTR_ERR(hdmi->regs);
1528
1529         err = platform_get_irq(pdev, 0);
1530         if (err < 0)
1531                 return err;
1532
1533         hdmi->irq = err;
1534
1535         INIT_LIST_HEAD(&hdmi->client.list);
1536         hdmi->client.ops = &hdmi_client_ops;
1537         hdmi->client.dev = &pdev->dev;
1538
1539         err = host1x_client_register(&hdmi->client);
1540         if (err < 0) {
1541                 dev_err(&pdev->dev, "failed to register host1x client: %d\n",
1542                         err);
1543                 return err;
1544         }
1545
1546         platform_set_drvdata(pdev, hdmi);
1547
1548         return 0;
1549 }
1550
1551 static int tegra_hdmi_remove(struct platform_device *pdev)
1552 {
1553         struct tegra_hdmi *hdmi = platform_get_drvdata(pdev);
1554         int err;
1555
1556         err = host1x_client_unregister(&hdmi->client);
1557         if (err < 0) {
1558                 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
1559                         err);
1560                 return err;
1561         }
1562
1563         tegra_output_remove(&hdmi->output);
1564
1565         clk_disable_unprepare(hdmi->clk_parent);
1566         clk_disable_unprepare(hdmi->clk);
1567
1568         return 0;
1569 }
1570
1571 struct platform_driver tegra_hdmi_driver = {
1572         .driver = {
1573                 .name = "tegra-hdmi",
1574                 .owner = THIS_MODULE,
1575                 .of_match_table = tegra_hdmi_of_match,
1576         },
1577         .probe = tegra_hdmi_probe,
1578         .remove = tegra_hdmi_remove,
1579 };