git.oblomov.eu Git - linux-2.6/blob - drivers/gpu/drm/i915/intel_sdvo.c

   1 /*
   2  * Copyright 2006 Dave Airlie <airlied@linux.ie>
   3  * Copyright © 2006-2007 Intel Corporation
   4  *   Jesse Barnes <jesse.barnes@intel.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *      Eric Anholt <eric@anholt.net>
  27  */
  28 #include <linux/i2c.h>
  29 #include <linux/delay.h>
  30 #include "drmP.h"
  31 #include "drm.h"
  32 #include "drm_crtc.h"
  33 #include "intel_drv.h"
  34 #include "i915_drm.h"
  35 #include "i915_drv.h"
  36 #include "intel_sdvo_regs.h"
  37
  38 #undef SDVO_DEBUG
  39 #define I915_SDVO       "i915_sdvo"
  40 struct intel_sdvo_priv {
  41         struct intel_i2c_chan *i2c_bus;
  42         int slaveaddr;
  43
  44         /* Register for the SDVO device: SDVOB or SDVOC */
  45         int output_device;
  46
  47         /* Active outputs controlled by this SDVO output */
  48         uint16_t controlled_output;
  49
  50         /*
  51          * Capabilities of the SDVO device returned by
  52          * i830_sdvo_get_capabilities()
  53          */
  54         struct intel_sdvo_caps caps;
  55
  56         /* Pixel clock limitations reported by the SDVO device, in kHz */
  57         int pixel_clock_min, pixel_clock_max;
  58
  59         /**
  60          * This is set if we're going to treat the device as TV-out.
  61          *
  62          * While we have these nice friendly flags for output types that ought
  63          * to decide this for us, the S-Video output on our HDMI+S-Video card
  64          * shows up as RGB1 (VGA).
  65          */
  66         bool is_tv;
  67
  68         /**
  69          * This is set if we treat the device as HDMI, instead of DVI.
  70          */
  71         bool is_hdmi;
  72         /**
  73          * This is set if we detect output of sdvo device as LVDS.
  74          */
  75         bool is_lvds;
  76
  77         /**
  78          * Returned SDTV resolutions allowed for the current format, if the
  79          * device reported it.
  80          */
  81         struct intel_sdvo_sdtv_resolution_reply sdtv_resolutions;
  82
  83         /**
  84          * Current selected TV format.
  85          *
  86          * This is stored in the same structure that's passed to the device, for
  87          * convenience.
  88          */
  89         struct intel_sdvo_tv_format tv_format;
  90
  91         /*
  92          * supported encoding mode, used to determine whether HDMI is
  93          * supported
  94          */
  95         struct intel_sdvo_encode encode;
  96
  97         /* DDC bus used by this SDVO output */
  98         uint8_t ddc_bus;
  99
 100         int save_sdvo_mult;
 101         u16 save_active_outputs;
 102         struct intel_sdvo_dtd save_input_dtd_1, save_input_dtd_2;
 103         struct intel_sdvo_dtd save_output_dtd[16];
 104         u32 save_SDVOX;
 105 };
 106
 107 /**
 108  * Writes the SDVOB or SDVOC with the given value, but always writes both
 109  * SDVOB and SDVOC to work around apparent hardware issues (according to
 110  * comments in the BIOS).
 111  */
 112 static void intel_sdvo_write_sdvox(struct intel_output *intel_output, u32 val)
 113 {
 114         struct drm_device *dev = intel_output->base.dev;
 115         struct drm_i915_private *dev_priv = dev->dev_private;
 116         struct intel_sdvo_priv   *sdvo_priv = intel_output->dev_priv;
 117         u32 bval = val, cval = val;
 118         int i;
 119
 120         if (sdvo_priv->output_device == SDVOB) {
 121                 cval = I915_READ(SDVOC);
 122         } else {
 123                 bval = I915_READ(SDVOB);
 124         }
 125         /*
 126          * Write the registers twice for luck. Sometimes,
 127          * writing them only once doesn't appear to 'stick'.
 128          * The BIOS does this too. Yay, magic
 129          */
 130         for (i = 0; i < 2; i++)
 131         {
 132                 I915_WRITE(SDVOB, bval);
 133                 I915_READ(SDVOB);
 134                 I915_WRITE(SDVOC, cval);
 135                 I915_READ(SDVOC);
 136         }
 137 }
 138
 139 static bool intel_sdvo_read_byte(struct intel_output *intel_output, u8 addr,
 140                                  u8 *ch)
 141 {
 142         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
 143         u8 out_buf[2];
 144         u8 buf[2];
 145         int ret;
 146
 147         struct i2c_msg msgs[] = {
 148                 {
 149                         .addr = sdvo_priv->i2c_bus->slave_addr,
 150                         .flags = 0,
 151                         .len = 1,
 152                         .buf = out_buf,
 153                 },
 154                 {
 155                         .addr = sdvo_priv->i2c_bus->slave_addr,
 156                         .flags = I2C_M_RD,
 157                         .len = 1,
 158                         .buf = buf,
 159                 }
 160         };
 161
 162         out_buf[0] = addr;
 163         out_buf[1] = 0;
 164
 165         if ((ret = i2c_transfer(&sdvo_priv->i2c_bus->adapter, msgs, 2)) == 2)
 166         {
 167                 *ch = buf[0];
 168                 return true;
 169         }
 170
 171         DRM_DEBUG("i2c transfer returned %d\n", ret);
 172         return false;
 173 }
 174
 175 static bool intel_sdvo_write_byte(struct intel_output *intel_output, int addr,
 176                                   u8 ch)
 177 {
 178         u8 out_buf[2];
 179         struct i2c_msg msgs[] = {
 180                 {
 181                         .addr = intel_output->i2c_bus->slave_addr,
 182                         .flags = 0,
 183                         .len = 2,
 184                         .buf = out_buf,
 185                 }
 186         };
 187
 188         out_buf[0] = addr;
 189         out_buf[1] = ch;
 190
 191         if (i2c_transfer(&intel_output->i2c_bus->adapter, msgs, 1) == 1)
 192         {
 193                 return true;
 194         }
 195         return false;
 196 }
 197
 198 #define SDVO_CMD_NAME_ENTRY(cmd) {cmd, #cmd}
 199 /** Mapping of command numbers to names, for debug output */
 200 static const struct _sdvo_cmd_name {
 201         u8 cmd;
 202         char *name;
 203 } sdvo_cmd_names[] = {
 204     SDVO_CMD_NAME_ENTRY(SDVO_CMD_RESET),
 205     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_DEVICE_CAPS),
 206     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_FIRMWARE_REV),
 207     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_TRAINED_INPUTS),
 208     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_ACTIVE_OUTPUTS),
 209     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_ACTIVE_OUTPUTS),
 210     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_IN_OUT_MAP),
 211     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_IN_OUT_MAP),
 212     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_ATTACHED_DISPLAYS),
 213     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HOT_PLUG_SUPPORT),
 214     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_ACTIVE_HOT_PLUG),
 215     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_ACTIVE_HOT_PLUG),
 216     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_INTERRUPT_EVENT_SOURCE),
 217     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_TARGET_INPUT),
 218     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_TARGET_OUTPUT),
 219     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_INPUT_TIMINGS_PART1),
 220     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_INPUT_TIMINGS_PART2),
 221     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_INPUT_TIMINGS_PART1),
 222     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_INPUT_TIMINGS_PART2),
 223     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_INPUT_TIMINGS_PART1),
 224     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_OUTPUT_TIMINGS_PART1),
 225     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_OUTPUT_TIMINGS_PART2),
 226     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_OUTPUT_TIMINGS_PART1),
 227     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_OUTPUT_TIMINGS_PART2),
 228     SDVO_CMD_NAME_ENTRY(SDVO_CMD_CREATE_PREFERRED_INPUT_TIMING),
 229     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART1),
 230     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART2),
 231     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_INPUT_PIXEL_CLOCK_RANGE),
 232     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_OUTPUT_PIXEL_CLOCK_RANGE),
 233     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPPORTED_CLOCK_RATE_MULTS),
 234     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_CLOCK_RATE_MULT),
 235     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_CLOCK_RATE_MULT),
 236     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPPORTED_TV_FORMATS),
 237     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_TV_FORMAT),
 238     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_TV_FORMAT),
 239     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPPORTED_POWER_STATES),
 240     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_POWER_STATE),
 241     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_ENCODER_POWER_STATE),
 242     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_DISPLAY_POWER_STATE),
 243     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_CONTROL_BUS_SWITCH),
 244     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SDTV_RESOLUTION_SUPPORT),
 245     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SCALED_HDTV_RESOLUTION_SUPPORT),
 246     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPPORTED_ENHANCEMENTS),
 247     /* HDMI op code */
 248     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPP_ENCODE),
 249     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_ENCODE),
 250     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_ENCODE),
 251     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_PIXEL_REPLI),
 252     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_PIXEL_REPLI),
 253     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_COLORIMETRY_CAP),
 254     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_COLORIMETRY),
 255     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_COLORIMETRY),
 256     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_AUDIO_ENCRYPT_PREFER),
 257     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_AUDIO_STAT),
 258     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_AUDIO_STAT),
 259     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_INDEX),
 260     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_HBUF_INDEX),
 261     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_INFO),
 262     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_AV_SPLIT),
 263     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_HBUF_AV_SPLIT),
 264     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_TXRATE),
 265     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_HBUF_TXRATE),
 266     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_HBUF_DATA),
 267     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_DATA),
 268 };
 269
 270 #define SDVO_NAME(dev_priv) ((dev_priv)->output_device == SDVOB ? "SDVOB" : "SDVOC")
 271 #define SDVO_PRIV(output)   ((struct intel_sdvo_priv *) (output)->dev_priv)
 272
 273 #ifdef SDVO_DEBUG
 274 static void intel_sdvo_debug_write(struct intel_output *intel_output, u8 cmd,
 275                                    void *args, int args_len)
 276 {
 277         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
 278         int i;
 279
 280         DRM_DEBUG_KMS(I915_SDVO, "%s: W: %02X ",
 281                                 SDVO_NAME(sdvo_priv), cmd);
 282         for (i = 0; i < args_len; i++)
 283                 DRM_LOG_KMS("%02X ", ((u8 *)args)[i]);
 284         for (; i < 8; i++)
 285                 DRM_LOG_KMS("   ");
 286         for (i = 0; i < sizeof(sdvo_cmd_names) / sizeof(sdvo_cmd_names[0]); i++) {
 287                 if (cmd == sdvo_cmd_names[i].cmd) {
 288                         DRM_LOG_KMS("(%s)", sdvo_cmd_names[i].name);
 289                         break;
 290                 }
 291         }
 292         if (i == sizeof(sdvo_cmd_names)/ sizeof(sdvo_cmd_names[0]))
 293                 DRM_LOG_KMS("(%02X)", cmd);
 294         DRM_LOG_KMS("\n");
 295 }
 296 #else
 297 #define intel_sdvo_debug_write(o, c, a, l)
 298 #endif
 299
 300 static void intel_sdvo_write_cmd(struct intel_output *intel_output, u8 cmd,
 301                                  void *args, int args_len)
 302 {
 303         int i;
 304
 305         intel_sdvo_debug_write(intel_output, cmd, args, args_len);
 306
 307         for (i = 0; i < args_len; i++) {
 308                 intel_sdvo_write_byte(intel_output, SDVO_I2C_ARG_0 - i,
 309                                       ((u8*)args)[i]);
 310         }
 311
 312         intel_sdvo_write_byte(intel_output, SDVO_I2C_OPCODE, cmd);
 313 }
 314
 315 #ifdef SDVO_DEBUG
 316 static const char *cmd_status_names[] = {
 317         "Power on",
 318         "Success",
 319         "Not supported",
 320         "Invalid arg",
 321         "Pending",
 322         "Target not specified",
 323         "Scaling not supported"
 324 };
 325
 326 static void intel_sdvo_debug_response(struct intel_output *intel_output,
 327                                       void *response, int response_len,
 328                                       u8 status)
 329 {
 330         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
 331         int i;
 332
 333         DRM_DEBUG_KMS(I915_SDVO, "%s: R: ", SDVO_NAME(sdvo_priv));
 334         for (i = 0; i < response_len; i++)
 335                 DRM_LOG_KMS("%02X ", ((u8 *)response)[i]);
 336         for (; i < 8; i++)
 337                 DRM_LOG_KMS("   ");
 338         if (status <= SDVO_CMD_STATUS_SCALING_NOT_SUPP)
 339                 DRM_LOG_KMS("(%s)", cmd_status_names[status]);
 340         else
 341                 DRM_LOG_KMS("(??? %d)", status);
 342         DRM_LOG_KMS("\n");
 343 }
 344 #else
 345 #define intel_sdvo_debug_response(o, r, l, s)
 346 #endif
 347
 348 static u8 intel_sdvo_read_response(struct intel_output *intel_output,
 349                                    void *response, int response_len)
 350 {
 351         int i;
 352         u8 status;
 353         u8 retry = 50;
 354
 355         while (retry--) {
 356                 /* Read the command response */
 357                 for (i = 0; i < response_len; i++) {
 358                         intel_sdvo_read_byte(intel_output,
 359                                              SDVO_I2C_RETURN_0 + i,
 360                                              &((u8 *)response)[i]);
 361                 }
 362
 363                 /* read the return status */
 364                 intel_sdvo_read_byte(intel_output, SDVO_I2C_CMD_STATUS,
 365                                      &status);
 366
 367                 intel_sdvo_debug_response(intel_output, response, response_len,
 368                                           status);
 369                 if (status != SDVO_CMD_STATUS_PENDING)
 370                         return status;
 371
 372                 mdelay(50);
 373         }
 374
 375         return status;
 376 }
 377
 378 static int intel_sdvo_get_pixel_multiplier(struct drm_display_mode *mode)
 379 {
 380         if (mode->clock >= 100000)
 381                 return 1;
 382         else if (mode->clock >= 50000)
 383                 return 2;
 384         else
 385                 return 4;
 386 }
 387
 388 /**
 389  * Don't check status code from this as it switches the bus back to the
 390  * SDVO chips which defeats the purpose of doing a bus switch in the first
 391  * place.
 392  */
 393 static void intel_sdvo_set_control_bus_switch(struct intel_output *intel_output,
 394                                               u8 target)
 395 {
 396         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_CONTROL_BUS_SWITCH, &target, 1);
 397 }
 398
 399 static bool intel_sdvo_set_target_input(struct intel_output *intel_output, bool target_0, bool target_1)
 400 {
 401         struct intel_sdvo_set_target_input_args targets = {0};
 402         u8 status;
 403
 404         if (target_0 && target_1)
 405                 return SDVO_CMD_STATUS_NOTSUPP;
 406
 407         if (target_1)
 408                 targets.target_1 = 1;
 409
 410         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_TARGET_INPUT, &targets,
 411                              sizeof(targets));
 412
 413         status = intel_sdvo_read_response(intel_output, NULL, 0);
 414
 415         return (status == SDVO_CMD_STATUS_SUCCESS);
 416 }
 417
 418 /**
 419  * Return whether each input is trained.
 420  *
 421  * This function is making an assumption about the layout of the response,
 422  * which should be checked against the docs.
 423  */
 424 static bool intel_sdvo_get_trained_inputs(struct intel_output *intel_output, bool *input_1, bool *input_2)
 425 {
 426         struct intel_sdvo_get_trained_inputs_response response;
 427         u8 status;
 428
 429         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_TRAINED_INPUTS, NULL, 0);
 430         status = intel_sdvo_read_response(intel_output, &response, sizeof(response));
 431         if (status != SDVO_CMD_STATUS_SUCCESS)
 432                 return false;
 433
 434         *input_1 = response.input0_trained;
 435         *input_2 = response.input1_trained;
 436         return true;
 437 }
 438
 439 static bool intel_sdvo_get_active_outputs(struct intel_output *intel_output,
 440                                           u16 *outputs)
 441 {
 442         u8 status;
 443
 444         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_ACTIVE_OUTPUTS, NULL, 0);
 445         status = intel_sdvo_read_response(intel_output, outputs, sizeof(*outputs));
 446
 447         return (status == SDVO_CMD_STATUS_SUCCESS);
 448 }
 449
 450 static bool intel_sdvo_set_active_outputs(struct intel_output *intel_output,
 451                                           u16 outputs)
 452 {
 453         u8 status;
 454
 455         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_ACTIVE_OUTPUTS, &outputs,
 456                              sizeof(outputs));
 457         status = intel_sdvo_read_response(intel_output, NULL, 0);
 458         return (status == SDVO_CMD_STATUS_SUCCESS);
 459 }
 460
 461 static bool intel_sdvo_set_encoder_power_state(struct intel_output *intel_output,
 462                                                int mode)
 463 {
 464         u8 status, state = SDVO_ENCODER_STATE_ON;
 465
 466         switch (mode) {
 467         case DRM_MODE_DPMS_ON:
 468                 state = SDVO_ENCODER_STATE_ON;
 469                 break;
 470         case DRM_MODE_DPMS_STANDBY:
 471                 state = SDVO_ENCODER_STATE_STANDBY;
 472                 break;
 473         case DRM_MODE_DPMS_SUSPEND:
 474                 state = SDVO_ENCODER_STATE_SUSPEND;
 475                 break;
 476         case DRM_MODE_DPMS_OFF:
 477                 state = SDVO_ENCODER_STATE_OFF;
 478                 break;
 479         }
 480
 481         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_ENCODER_POWER_STATE, &state,
 482                              sizeof(state));
 483         status = intel_sdvo_read_response(intel_output, NULL, 0);
 484
 485         return (status == SDVO_CMD_STATUS_SUCCESS);
 486 }
 487
 488 static bool intel_sdvo_get_input_pixel_clock_range(struct intel_output *intel_output,
 489                                                    int *clock_min,
 490                                                    int *clock_max)
 491 {
 492         struct intel_sdvo_pixel_clock_range clocks;
 493         u8 status;
 494
 495         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_INPUT_PIXEL_CLOCK_RANGE,
 496                              NULL, 0);
 497
 498         status = intel_sdvo_read_response(intel_output, &clocks, sizeof(clocks));
 499
 500         if (status != SDVO_CMD_STATUS_SUCCESS)
 501                 return false;
 502
 503         /* Convert the values from units of 10 kHz to kHz. */
 504         *clock_min = clocks.min * 10;
 505         *clock_max = clocks.max * 10;
 506
 507         return true;
 508 }
 509
 510 static bool intel_sdvo_set_target_output(struct intel_output *intel_output,
 511                                          u16 outputs)
 512 {
 513         u8 status;
 514
 515         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_TARGET_OUTPUT, &outputs,
 516                              sizeof(outputs));
 517
 518         status = intel_sdvo_read_response(intel_output, NULL, 0);
 519         return (status == SDVO_CMD_STATUS_SUCCESS);
 520 }
 521
 522 static bool intel_sdvo_get_timing(struct intel_output *intel_output, u8 cmd,
 523                                   struct intel_sdvo_dtd *dtd)
 524 {
 525         u8 status;
 526
 527         intel_sdvo_write_cmd(intel_output, cmd, NULL, 0);
 528         status = intel_sdvo_read_response(intel_output, &dtd->part1,
 529                                           sizeof(dtd->part1));
 530         if (status != SDVO_CMD_STATUS_SUCCESS)
 531                 return false;
 532
 533         intel_sdvo_write_cmd(intel_output, cmd + 1, NULL, 0);
 534         status = intel_sdvo_read_response(intel_output, &dtd->part2,
 535                                           sizeof(dtd->part2));
 536         if (status != SDVO_CMD_STATUS_SUCCESS)
 537                 return false;
 538
 539         return true;
 540 }
 541
 542 static bool intel_sdvo_get_input_timing(struct intel_output *intel_output,
 543                                          struct intel_sdvo_dtd *dtd)
 544 {
 545         return intel_sdvo_get_timing(intel_output,
 546                                      SDVO_CMD_GET_INPUT_TIMINGS_PART1, dtd);
 547 }
 548
 549 static bool intel_sdvo_get_output_timing(struct intel_output *intel_output,
 550                                          struct intel_sdvo_dtd *dtd)
 551 {
 552         return intel_sdvo_get_timing(intel_output,
 553                                      SDVO_CMD_GET_OUTPUT_TIMINGS_PART1, dtd);
 554 }
 555
 556 static bool intel_sdvo_set_timing(struct intel_output *intel_output, u8 cmd,
 557                                   struct intel_sdvo_dtd *dtd)
 558 {
 559         u8 status;
 560
 561         intel_sdvo_write_cmd(intel_output, cmd, &dtd->part1, sizeof(dtd->part1));
 562         status = intel_sdvo_read_response(intel_output, NULL, 0);
 563         if (status != SDVO_CMD_STATUS_SUCCESS)
 564                 return false;
 565
 566         intel_sdvo_write_cmd(intel_output, cmd + 1, &dtd->part2, sizeof(dtd->part2));
 567         status = intel_sdvo_read_response(intel_output, NULL, 0);
 568         if (status != SDVO_CMD_STATUS_SUCCESS)
 569                 return false;
 570
 571         return true;
 572 }
 573
 574 static bool intel_sdvo_set_input_timing(struct intel_output *intel_output,
 575                                          struct intel_sdvo_dtd *dtd)
 576 {
 577         return intel_sdvo_set_timing(intel_output,
 578                                      SDVO_CMD_SET_INPUT_TIMINGS_PART1, dtd);
 579 }
 580
 581 static bool intel_sdvo_set_output_timing(struct intel_output *intel_output,
 582                                          struct intel_sdvo_dtd *dtd)
 583 {
 584         return intel_sdvo_set_timing(intel_output,
 585                                      SDVO_CMD_SET_OUTPUT_TIMINGS_PART1, dtd);
 586 }
 587
 588 static bool
 589 intel_sdvo_create_preferred_input_timing(struct intel_output *output,
 590                                          uint16_t clock,
 591                                          uint16_t width,
 592                                          uint16_t height)
 593 {
 594         struct intel_sdvo_preferred_input_timing_args args;
 595         uint8_t status;
 596
 597         memset(&args, 0, sizeof(args));
 598         args.clock = clock;
 599         args.width = width;
 600         args.height = height;
 601         args.interlace = 0;
 602         args.scaled = 0;
 603         intel_sdvo_write_cmd(output, SDVO_CMD_CREATE_PREFERRED_INPUT_TIMING,
 604                              &args, sizeof(args));
 605         status = intel_sdvo_read_response(output, NULL, 0);
 606         if (status != SDVO_CMD_STATUS_SUCCESS)
 607                 return false;
 608
 609         return true;
 610 }
 611
 612 static bool intel_sdvo_get_preferred_input_timing(struct intel_output *output,
 613                                                   struct intel_sdvo_dtd *dtd)
 614 {
 615         bool status;
 616
 617         intel_sdvo_write_cmd(output, SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART1,
 618                              NULL, 0);
 619
 620         status = intel_sdvo_read_response(output, &dtd->part1,
 621                                           sizeof(dtd->part1));
 622         if (status != SDVO_CMD_STATUS_SUCCESS)
 623                 return false;
 624
 625         intel_sdvo_write_cmd(output, SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART2,
 626                              NULL, 0);
 627
 628         status = intel_sdvo_read_response(output, &dtd->part2,
 629                                           sizeof(dtd->part2));
 630         if (status != SDVO_CMD_STATUS_SUCCESS)
 631                 return false;
 632
 633         return false;
 634 }
 635
 636 static int intel_sdvo_get_clock_rate_mult(struct intel_output *intel_output)
 637 {
 638         u8 response, status;
 639
 640         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_CLOCK_RATE_MULT, NULL, 0);
 641         status = intel_sdvo_read_response(intel_output, &response, 1);
 642
 643         if (status != SDVO_CMD_STATUS_SUCCESS) {
 644                 DRM_DEBUG("Couldn't get SDVO clock rate multiplier\n");
 645                 return SDVO_CLOCK_RATE_MULT_1X;
 646         } else {
 647                 DRM_DEBUG("Current clock rate multiplier: %d\n", response);
 648         }
 649
 650         return response;
 651 }
 652
 653 static bool intel_sdvo_set_clock_rate_mult(struct intel_output *intel_output, u8 val)
 654 {
 655         u8 status;
 656
 657         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_CLOCK_RATE_MULT, &val, 1);
 658         status = intel_sdvo_read_response(intel_output, NULL, 0);
 659         if (status != SDVO_CMD_STATUS_SUCCESS)
 660                 return false;
 661
 662         return true;
 663 }
 664
 665 static void intel_sdvo_get_dtd_from_mode(struct intel_sdvo_dtd *dtd,
 666                                          struct drm_display_mode *mode)
 667 {
 668         uint16_t width, height;
 669         uint16_t h_blank_len, h_sync_len, v_blank_len, v_sync_len;
 670         uint16_t h_sync_offset, v_sync_offset;
 671
 672         width = mode->crtc_hdisplay;
 673         height = mode->crtc_vdisplay;
 674
 675         /* do some mode translations */
 676         h_blank_len = mode->crtc_hblank_end - mode->crtc_hblank_start;
 677         h_sync_len = mode->crtc_hsync_end - mode->crtc_hsync_start;
 678
 679         v_blank_len = mode->crtc_vblank_end - mode->crtc_vblank_start;
 680         v_sync_len = mode->crtc_vsync_end - mode->crtc_vsync_start;
 681
 682         h_sync_offset = mode->crtc_hsync_start - mode->crtc_hblank_start;
 683         v_sync_offset = mode->crtc_vsync_start - mode->crtc_vblank_start;
 684
 685         dtd->part1.clock = mode->clock / 10;
 686         dtd->part1.h_active = width & 0xff;
 687         dtd->part1.h_blank = h_blank_len & 0xff;
 688         dtd->part1.h_high = (((width >> 8) & 0xf) << 4) |
 689                 ((h_blank_len >> 8) & 0xf);
 690         dtd->part1.v_active = height & 0xff;
 691         dtd->part1.v_blank = v_blank_len & 0xff;
 692         dtd->part1.v_high = (((height >> 8) & 0xf) << 4) |
 693                 ((v_blank_len >> 8) & 0xf);
 694
 695         dtd->part2.h_sync_off = h_sync_offset & 0xff;
 696         dtd->part2.h_sync_width = h_sync_len & 0xff;
 697         dtd->part2.v_sync_off_width = (v_sync_offset & 0xf) << 4 |
 698                 (v_sync_len & 0xf);
 699         dtd->part2.sync_off_width_high = ((h_sync_offset & 0x300) >> 2) |
 700                 ((h_sync_len & 0x300) >> 4) | ((v_sync_offset & 0x30) >> 2) |
 701                 ((v_sync_len & 0x30) >> 4);
 702
 703         dtd->part2.dtd_flags = 0x18;
 704         if (mode->flags & DRM_MODE_FLAG_PHSYNC)
 705                 dtd->part2.dtd_flags |= 0x2;
 706         if (mode->flags & DRM_MODE_FLAG_PVSYNC)
 707                 dtd->part2.dtd_flags |= 0x4;
 708
 709         dtd->part2.sdvo_flags = 0;
 710         dtd->part2.v_sync_off_high = v_sync_offset & 0xc0;
 711         dtd->part2.reserved = 0;
 712 }
 713
 714 static void intel_sdvo_get_mode_from_dtd(struct drm_display_mode * mode,
 715                                          struct intel_sdvo_dtd *dtd)
 716 {
 717         mode->hdisplay = dtd->part1.h_active;
 718         mode->hdisplay += ((dtd->part1.h_high >> 4) & 0x0f) << 8;
 719         mode->hsync_start = mode->hdisplay + dtd->part2.h_sync_off;
 720         mode->hsync_start += (dtd->part2.sync_off_width_high & 0xc0) << 2;
 721         mode->hsync_end = mode->hsync_start + dtd->part2.h_sync_width;
 722         mode->hsync_end += (dtd->part2.sync_off_width_high & 0x30) << 4;
 723         mode->htotal = mode->hdisplay + dtd->part1.h_blank;
 724         mode->htotal += (dtd->part1.h_high & 0xf) << 8;
 725
 726         mode->vdisplay = dtd->part1.v_active;
 727         mode->vdisplay += ((dtd->part1.v_high >> 4) & 0x0f) << 8;
 728         mode->vsync_start = mode->vdisplay;
 729         mode->vsync_start += (dtd->part2.v_sync_off_width >> 4) & 0xf;
 730         mode->vsync_start += (dtd->part2.sync_off_width_high & 0x0c) << 2;
 731         mode->vsync_start += dtd->part2.v_sync_off_high & 0xc0;
 732         mode->vsync_end = mode->vsync_start +
 733                 (dtd->part2.v_sync_off_width & 0xf);
 734         mode->vsync_end += (dtd->part2.sync_off_width_high & 0x3) << 4;
 735         mode->vtotal = mode->vdisplay + dtd->part1.v_blank;
 736         mode->vtotal += (dtd->part1.v_high & 0xf) << 8;
 737
 738         mode->clock = dtd->part1.clock * 10;
 739
 740         mode->flags &= ~(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC);
 741         if (dtd->part2.dtd_flags & 0x2)
 742                 mode->flags |= DRM_MODE_FLAG_PHSYNC;
 743         if (dtd->part2.dtd_flags & 0x4)
 744                 mode->flags |= DRM_MODE_FLAG_PVSYNC;
 745 }
 746
 747 static bool intel_sdvo_get_supp_encode(struct intel_output *output,
 748                                        struct intel_sdvo_encode *encode)
 749 {
 750         uint8_t status;
 751
 752         intel_sdvo_write_cmd(output, SDVO_CMD_GET_SUPP_ENCODE, NULL, 0);
 753         status = intel_sdvo_read_response(output, encode, sizeof(*encode));
 754         if (status != SDVO_CMD_STATUS_SUCCESS) { /* non-support means DVI */
 755                 memset(encode, 0, sizeof(*encode));
 756                 return false;
 757         }
 758
 759         return true;
 760 }
 761
 762 static bool intel_sdvo_set_encode(struct intel_output *output, uint8_t mode)
 763 {
 764         uint8_t status;
 765
 766         intel_sdvo_write_cmd(output, SDVO_CMD_SET_ENCODE, &mode, 1);
 767         status = intel_sdvo_read_response(output, NULL, 0);
 768
 769         return (status == SDVO_CMD_STATUS_SUCCESS);
 770 }
 771
 772 static bool intel_sdvo_set_colorimetry(struct intel_output *output,
 773                                        uint8_t mode)
 774 {
 775         uint8_t status;
 776
 777         intel_sdvo_write_cmd(output, SDVO_CMD_SET_COLORIMETRY, &mode, 1);
 778         status = intel_sdvo_read_response(output, NULL, 0);
 779
 780         return (status == SDVO_CMD_STATUS_SUCCESS);
 781 }
 782
 783 #if 0
 784 static void intel_sdvo_dump_hdmi_buf(struct intel_output *output)
 785 {
 786         int i, j;
 787         uint8_t set_buf_index[2];
 788         uint8_t av_split;
 789         uint8_t buf_size;
 790         uint8_t buf[48];
 791         uint8_t *pos;
 792
 793         intel_sdvo_write_cmd(output, SDVO_CMD_GET_HBUF_AV_SPLIT, NULL, 0);
 794         intel_sdvo_read_response(output, &av_split, 1);
 795
 796         for (i = 0; i <= av_split; i++) {
 797                 set_buf_index[0] = i; set_buf_index[1] = 0;
 798                 intel_sdvo_write_cmd(output, SDVO_CMD_SET_HBUF_INDEX,
 799                                      set_buf_index, 2);
 800                 intel_sdvo_write_cmd(output, SDVO_CMD_GET_HBUF_INFO, NULL, 0);
 801                 intel_sdvo_read_response(output, &buf_size, 1);
 802
 803                 pos = buf;
 804                 for (j = 0; j <= buf_size; j += 8) {
 805                         intel_sdvo_write_cmd(output, SDVO_CMD_GET_HBUF_DATA,
 806                                              NULL, 0);
 807                         intel_sdvo_read_response(output, pos, 8);
 808                         pos += 8;
 809                 }
 810         }
 811 }
 812 #endif
 813
 814 static void intel_sdvo_set_hdmi_buf(struct intel_output *output, int index,
 815                                 uint8_t *data, int8_t size, uint8_t tx_rate)
 816 {
 817     uint8_t set_buf_index[2];
 818
 819     set_buf_index[0] = index;
 820     set_buf_index[1] = 0;
 821
 822     intel_sdvo_write_cmd(output, SDVO_CMD_SET_HBUF_INDEX, set_buf_index, 2);
 823
 824     for (; size > 0; size -= 8) {
 825         intel_sdvo_write_cmd(output, SDVO_CMD_SET_HBUF_DATA, data, 8);
 826         data += 8;
 827     }
 828
 829     intel_sdvo_write_cmd(output, SDVO_CMD_SET_HBUF_TXRATE, &tx_rate, 1);
 830 }
 831
 832 static uint8_t intel_sdvo_calc_hbuf_csum(uint8_t *data, uint8_t size)
 833 {
 834         uint8_t csum = 0;
 835         int i;
 836
 837         for (i = 0; i < size; i++)
 838                 csum += data[i];
 839
 840         return 0x100 - csum;
 841 }
 842
 843 #define DIP_TYPE_AVI    0x82
 844 #define DIP_VERSION_AVI 0x2
 845 #define DIP_LEN_AVI     13
 846
 847 struct dip_infoframe {
 848         uint8_t type;
 849         uint8_t version;
 850         uint8_t len;
 851         uint8_t checksum;
 852         union {
 853                 struct {
 854                         /* Packet Byte #1 */
 855                         uint8_t S:2;
 856                         uint8_t B:2;
 857                         uint8_t A:1;
 858                         uint8_t Y:2;
 859                         uint8_t rsvd1:1;
 860                         /* Packet Byte #2 */
 861                         uint8_t R:4;
 862                         uint8_t M:2;
 863                         uint8_t C:2;
 864                         /* Packet Byte #3 */
 865                         uint8_t SC:2;
 866                         uint8_t Q:2;
 867                         uint8_t EC:3;
 868                         uint8_t ITC:1;
 869                         /* Packet Byte #4 */
 870                         uint8_t VIC:7;
 871                         uint8_t rsvd2:1;
 872                         /* Packet Byte #5 */
 873                         uint8_t PR:4;
 874                         uint8_t rsvd3:4;
 875                         /* Packet Byte #6~13 */
 876                         uint16_t top_bar_end;
 877                         uint16_t bottom_bar_start;
 878                         uint16_t left_bar_end;
 879                         uint16_t right_bar_start;
 880                 } avi;
 881                 struct {
 882                         /* Packet Byte #1 */
 883                         uint8_t channel_count:3;
 884                         uint8_t rsvd1:1;
 885                         uint8_t coding_type:4;
 886                         /* Packet Byte #2 */
 887                         uint8_t sample_size:2; /* SS0, SS1 */
 888                         uint8_t sample_frequency:3;
 889                         uint8_t rsvd2:3;
 890                         /* Packet Byte #3 */
 891                         uint8_t coding_type_private:5;
 892                         uint8_t rsvd3:3;
 893                         /* Packet Byte #4 */
 894                         uint8_t channel_allocation;
 895                         /* Packet Byte #5 */
 896                         uint8_t rsvd4:3;
 897                         uint8_t level_shift:4;
 898                         uint8_t downmix_inhibit:1;
 899                 } audio;
 900                 uint8_t payload[28];
 901         } __attribute__ ((packed)) u;
 902 } __attribute__((packed));
 903
 904 static void intel_sdvo_set_avi_infoframe(struct intel_output *output,
 905                                          struct drm_display_mode * mode)
 906 {
 907         struct dip_infoframe avi_if = {
 908                 .type = DIP_TYPE_AVI,
 909                 .version = DIP_VERSION_AVI,
 910                 .len = DIP_LEN_AVI,
 911         };
 912
 913         avi_if.checksum = intel_sdvo_calc_hbuf_csum((uint8_t *)&avi_if,
 914                                                     4 + avi_if.len);
 915         intel_sdvo_set_hdmi_buf(output, 1, (uint8_t *)&avi_if, 4 + avi_if.len,
 916                                 SDVO_HBUF_TX_VSYNC);
 917 }
 918
 919 static void intel_sdvo_set_tv_format(struct intel_output *output)
 920 {
 921         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
 922         struct intel_sdvo_tv_format *format, unset;
 923         u8 status;
 924
 925         format = &sdvo_priv->tv_format;
 926         memset(&unset, 0, sizeof(unset));
 927         if (memcmp(format, &unset, sizeof(*format))) {
 928                 DRM_DEBUG("%s: Choosing default TV format of NTSC-M\n",
 929                                 SDVO_NAME(sdvo_priv));
 930                 format->ntsc_m = 1;
 931                 intel_sdvo_write_cmd(output, SDVO_CMD_SET_TV_FORMAT, format,
 932                                 sizeof(*format));
 933                 status = intel_sdvo_read_response(output, NULL, 0);
 934                 if (status != SDVO_CMD_STATUS_SUCCESS)
 935                         DRM_DEBUG("%s: Failed to set TV format\n",
 936                                         SDVO_NAME(sdvo_priv));
 937         }
 938 }
 939
 940 static bool intel_sdvo_mode_fixup(struct drm_encoder *encoder,
 941                                   struct drm_display_mode *mode,
 942                                   struct drm_display_mode *adjusted_mode)
 943 {
 944         struct intel_output *output = enc_to_intel_output(encoder);
 945         struct intel_sdvo_priv *dev_priv = output->dev_priv;
 946
 947         if (!dev_priv->is_tv) {
 948                 /* Make the CRTC code factor in the SDVO pixel multiplier.  The
 949                  * SDVO device will be told of the multiplier during mode_set.
 950                  */
 951                 adjusted_mode->clock *= intel_sdvo_get_pixel_multiplier(mode);
 952         } else {
 953                 struct intel_sdvo_dtd output_dtd;
 954                 bool success;
 955
 956                 /* We need to construct preferred input timings based on our
 957                  * output timings.  To do that, we have to set the output
 958                  * timings, even though this isn't really the right place in
 959                  * the sequence to do it. Oh well.
 960                  */
 961
 962
 963                 /* Set output timings */
 964                 intel_sdvo_get_dtd_from_mode(&output_dtd, mode);
 965                 intel_sdvo_set_target_output(output,
 966                                              dev_priv->controlled_output);
 967                 intel_sdvo_set_output_timing(output, &output_dtd);
 968
 969                 /* Set the input timing to the screen. Assume always input 0. */
 970                 intel_sdvo_set_target_input(output, true, false);
 971
 972
 973                 success = intel_sdvo_create_preferred_input_timing(output,
 974                                                                    mode->clock / 10,
 975                                                                    mode->hdisplay,
 976                                                                    mode->vdisplay);
 977                 if (success) {
 978                         struct intel_sdvo_dtd input_dtd;
 979
 980                         intel_sdvo_get_preferred_input_timing(output,
 981                                                              &input_dtd);
 982                         intel_sdvo_get_mode_from_dtd(adjusted_mode, &input_dtd);
 983
 984                         drm_mode_set_crtcinfo(adjusted_mode, 0);
 985
 986                         mode->clock = adjusted_mode->clock;
 987
 988                         adjusted_mode->clock *=
 989                                 intel_sdvo_get_pixel_multiplier(mode);
 990                 } else {
 991                         return false;
 992                 }
 993         }
 994         return true;
 995 }
 996
 997 static void intel_sdvo_mode_set(struct drm_encoder *encoder,
 998                                 struct drm_display_mode *mode,
 999                                 struct drm_display_mode *adjusted_mode)
1000 {
1001         struct drm_device *dev = encoder->dev;
1002         struct drm_i915_private *dev_priv = dev->dev_private;
1003         struct drm_crtc *crtc = encoder->crtc;
1004         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1005         struct intel_output *output = enc_to_intel_output(encoder);
1006         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
1007         u32 sdvox = 0;
1008         int sdvo_pixel_multiply;
1009         struct intel_sdvo_in_out_map in_out;
1010         struct intel_sdvo_dtd input_dtd;
1011         u8 status;
1012
1013         if (!mode)
1014                 return;
1015
1016         /* First, set the input mapping for the first input to our controlled
1017          * output. This is only correct if we're a single-input device, in
1018          * which case the first input is the output from the appropriate SDVO
1019          * channel on the motherboard.  In a two-input device, the first input
1020          * will be SDVOB and the second SDVOC.
1021          */
1022         in_out.in0 = sdvo_priv->controlled_output;
1023         in_out.in1 = 0;
1024
1025         intel_sdvo_write_cmd(output, SDVO_CMD_SET_IN_OUT_MAP,
1026                              &in_out, sizeof(in_out));
1027         status = intel_sdvo_read_response(output, NULL, 0);
1028
1029         if (sdvo_priv->is_hdmi) {
1030                 intel_sdvo_set_avi_infoframe(output, mode);
1031                 sdvox |= SDVO_AUDIO_ENABLE;
1032         }
1033
1034         /* We have tried to get input timing in mode_fixup, and filled into
1035            adjusted_mode */
1036         if (sdvo_priv->is_tv)
1037                 intel_sdvo_get_dtd_from_mode(&input_dtd, adjusted_mode);
1038         else
1039                 intel_sdvo_get_dtd_from_mode(&input_dtd, mode);
1040
1041         /* If it's a TV, we already set the output timing in mode_fixup.
1042          * Otherwise, the output timing is equal to the input timing.
1043          */
1044         if (!sdvo_priv->is_tv) {
1045                 /* Set the output timing to the screen */
1046                 intel_sdvo_set_target_output(output,
1047                                              sdvo_priv->controlled_output);
1048                 intel_sdvo_set_output_timing(output, &input_dtd);
1049         }
1050
1051         /* Set the input timing to the screen. Assume always input 0. */
1052         intel_sdvo_set_target_input(output, true, false);
1053
1054         if (sdvo_priv->is_tv)
1055                 intel_sdvo_set_tv_format(output);
1056
1057         /* We would like to use intel_sdvo_create_preferred_input_timing() to
1058          * provide the device with a timing it can support, if it supports that
1059          * feature.  However, presumably we would need to adjust the CRTC to
1060          * output the preferred timing, and we don't support that currently.
1061          */
1062 #if 0
1063         success = intel_sdvo_create_preferred_input_timing(output, clock,
1064                                                            width, height);
1065         if (success) {
1066                 struct intel_sdvo_dtd *input_dtd;
1067
1068                 intel_sdvo_get_preferred_input_timing(output, &input_dtd);
1069                 intel_sdvo_set_input_timing(output, &input_dtd);
1070         }
1071 #else
1072         intel_sdvo_set_input_timing(output, &input_dtd);
1073 #endif
1074
1075         switch (intel_sdvo_get_pixel_multiplier(mode)) {
1076         case 1:
1077                 intel_sdvo_set_clock_rate_mult(output,
1078                                                SDVO_CLOCK_RATE_MULT_1X);
1079                 break;
1080         case 2:
1081                 intel_sdvo_set_clock_rate_mult(output,
1082                                                SDVO_CLOCK_RATE_MULT_2X);
1083                 break;
1084         case 4:
1085                 intel_sdvo_set_clock_rate_mult(output,
1086                                                SDVO_CLOCK_RATE_MULT_4X);
1087                 break;
1088         }
1089
1090         /* Set the SDVO control regs. */
1091         if (IS_I965G(dev)) {
1092                 sdvox |= SDVO_BORDER_ENABLE |
1093                         SDVO_VSYNC_ACTIVE_HIGH |
1094                         SDVO_HSYNC_ACTIVE_HIGH;
1095         } else {
1096                 sdvox |= I915_READ(sdvo_priv->output_device);
1097                 switch (sdvo_priv->output_device) {
1098                 case SDVOB:
1099                         sdvox &= SDVOB_PRESERVE_MASK;
1100                         break;
1101                 case SDVOC:
1102                         sdvox &= SDVOC_PRESERVE_MASK;
1103                         break;
1104                 }
1105                 sdvox |= (9 << 19) | SDVO_BORDER_ENABLE;
1106         }
1107         if (intel_crtc->pipe == 1)
1108                 sdvox |= SDVO_PIPE_B_SELECT;
1109
1110         sdvo_pixel_multiply = intel_sdvo_get_pixel_multiplier(mode);
1111         if (IS_I965G(dev)) {
1112                 /* done in crtc_mode_set as the dpll_md reg must be written early */
1113         } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
1114                 /* done in crtc_mode_set as it lives inside the dpll register */
1115         } else {
1116                 sdvox |= (sdvo_pixel_multiply - 1) << SDVO_PORT_MULTIPLY_SHIFT;
1117         }
1118
1119         intel_sdvo_write_sdvox(output, sdvox);
1120 }
1121
1122 static void intel_sdvo_dpms(struct drm_encoder *encoder, int mode)
1123 {
1124         struct drm_device *dev = encoder->dev;
1125         struct drm_i915_private *dev_priv = dev->dev_private;
1126         struct intel_output *intel_output = enc_to_intel_output(encoder);
1127         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1128         u32 temp;
1129
1130         if (mode != DRM_MODE_DPMS_ON) {
1131                 intel_sdvo_set_active_outputs(intel_output, 0);
1132                 if (0)
1133                         intel_sdvo_set_encoder_power_state(intel_output, mode);
1134
1135                 if (mode == DRM_MODE_DPMS_OFF) {
1136                         temp = I915_READ(sdvo_priv->output_device);
1137                         if ((temp & SDVO_ENABLE) != 0) {
1138                                 intel_sdvo_write_sdvox(intel_output, temp & ~SDVO_ENABLE);
1139                         }
1140                 }
1141         } else {
1142                 bool input1, input2;
1143                 int i;
1144                 u8 status;
1145
1146                 temp = I915_READ(sdvo_priv->output_device);
1147                 if ((temp & SDVO_ENABLE) == 0)
1148                         intel_sdvo_write_sdvox(intel_output, temp | SDVO_ENABLE);
1149                 for (i = 0; i < 2; i++)
1150                   intel_wait_for_vblank(dev);
1151
1152                 status = intel_sdvo_get_trained_inputs(intel_output, &input1,
1153                                                        &input2);
1154
1155
1156                 /* Warn if the device reported failure to sync.
1157                  * A lot of SDVO devices fail to notify of sync, but it's
1158                  * a given it the status is a success, we succeeded.
1159                  */
1160                 if (status == SDVO_CMD_STATUS_SUCCESS && !input1) {
1161                         DRM_DEBUG("First %s output reported failure to sync\n",
1162                                    SDVO_NAME(sdvo_priv));
1163                 }
1164
1165                 if (0)
1166                         intel_sdvo_set_encoder_power_state(intel_output, mode);
1167                 intel_sdvo_set_active_outputs(intel_output, sdvo_priv->controlled_output);
1168         }
1169         return;
1170 }
1171
1172 static void intel_sdvo_save(struct drm_connector *connector)
1173 {
1174         struct drm_device *dev = connector->dev;
1175         struct drm_i915_private *dev_priv = dev->dev_private;
1176         struct intel_output *intel_output = to_intel_output(connector);
1177         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1178         int o;
1179
1180         sdvo_priv->save_sdvo_mult = intel_sdvo_get_clock_rate_mult(intel_output);
1181         intel_sdvo_get_active_outputs(intel_output, &sdvo_priv->save_active_outputs);
1182
1183         if (sdvo_priv->caps.sdvo_inputs_mask & 0x1) {
1184                 intel_sdvo_set_target_input(intel_output, true, false);
1185                 intel_sdvo_get_input_timing(intel_output,
1186                                             &sdvo_priv->save_input_dtd_1);
1187         }
1188
1189         if (sdvo_priv->caps.sdvo_inputs_mask & 0x2) {
1190                 intel_sdvo_set_target_input(intel_output, false, true);
1191                 intel_sdvo_get_input_timing(intel_output,
1192                                             &sdvo_priv->save_input_dtd_2);
1193         }
1194
1195         for (o = SDVO_OUTPUT_FIRST; o <= SDVO_OUTPUT_LAST; o++)
1196         {
1197                 u16  this_output = (1 << o);
1198                 if (sdvo_priv->caps.output_flags & this_output)
1199                 {
1200                         intel_sdvo_set_target_output(intel_output, this_output);
1201                         intel_sdvo_get_output_timing(intel_output,
1202                                                      &sdvo_priv->save_output_dtd[o]);
1203                 }
1204         }
1205         if (sdvo_priv->is_tv) {
1206                 /* XXX: Save TV format/enhancements. */
1207         }
1208
1209         sdvo_priv->save_SDVOX = I915_READ(sdvo_priv->output_device);
1210 }
1211
1212 static void intel_sdvo_restore(struct drm_connector *connector)
1213 {
1214         struct drm_device *dev = connector->dev;
1215         struct intel_output *intel_output = to_intel_output(connector);
1216         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1217         int o;
1218         int i;
1219         bool input1, input2;
1220         u8 status;
1221
1222         intel_sdvo_set_active_outputs(intel_output, 0);
1223
1224         for (o = SDVO_OUTPUT_FIRST; o <= SDVO_OUTPUT_LAST; o++)
1225         {
1226                 u16  this_output = (1 << o);
1227                 if (sdvo_priv->caps.output_flags & this_output) {
1228                         intel_sdvo_set_target_output(intel_output, this_output);
1229                         intel_sdvo_set_output_timing(intel_output, &sdvo_priv->save_output_dtd[o]);
1230                 }
1231         }
1232
1233         if (sdvo_priv->caps.sdvo_inputs_mask & 0x1) {
1234                 intel_sdvo_set_target_input(intel_output, true, false);
1235                 intel_sdvo_set_input_timing(intel_output, &sdvo_priv->save_input_dtd_1);
1236         }
1237
1238         if (sdvo_priv->caps.sdvo_inputs_mask & 0x2) {
1239                 intel_sdvo_set_target_input(intel_output, false, true);
1240                 intel_sdvo_set_input_timing(intel_output, &sdvo_priv->save_input_dtd_2);
1241         }
1242
1243         intel_sdvo_set_clock_rate_mult(intel_output, sdvo_priv->save_sdvo_mult);
1244
1245         if (sdvo_priv->is_tv) {
1246                 /* XXX: Restore TV format/enhancements. */
1247         }
1248
1249         intel_sdvo_write_sdvox(intel_output, sdvo_priv->save_SDVOX);
1250
1251         if (sdvo_priv->save_SDVOX & SDVO_ENABLE)
1252         {
1253                 for (i = 0; i < 2; i++)
1254                         intel_wait_for_vblank(dev);
1255                 status = intel_sdvo_get_trained_inputs(intel_output, &input1, &input2);
1256                 if (status == SDVO_CMD_STATUS_SUCCESS && !input1)
1257                         DRM_DEBUG("First %s output reported failure to sync\n",
1258                                    SDVO_NAME(sdvo_priv));
1259         }
1260
1261         intel_sdvo_set_active_outputs(intel_output, sdvo_priv->save_active_outputs);
1262 }
1263
1264 static int intel_sdvo_mode_valid(struct drm_connector *connector,
1265                                  struct drm_display_mode *mode)
1266 {
1267         struct intel_output *intel_output = to_intel_output(connector);
1268         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1269
1270         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
1271                 return MODE_NO_DBLESCAN;
1272
1273         if (sdvo_priv->pixel_clock_min > mode->clock)
1274                 return MODE_CLOCK_LOW;
1275
1276         if (sdvo_priv->pixel_clock_max < mode->clock)
1277                 return MODE_CLOCK_HIGH;
1278
1279         return MODE_OK;
1280 }
1281
1282 static bool intel_sdvo_get_capabilities(struct intel_output *intel_output, struct intel_sdvo_caps *caps)
1283 {
1284         u8 status;
1285
1286         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_DEVICE_CAPS, NULL, 0);
1287         status = intel_sdvo_read_response(intel_output, caps, sizeof(*caps));
1288         if (status != SDVO_CMD_STATUS_SUCCESS)
1289                 return false;
1290
1291         return true;
1292 }
1293
1294 struct drm_connector* intel_sdvo_find(struct drm_device *dev, int sdvoB)
1295 {
1296         struct drm_connector *connector = NULL;
1297         struct intel_output *iout = NULL;
1298         struct intel_sdvo_priv *sdvo;
1299
1300         /* find the sdvo connector */
1301         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1302                 iout = to_intel_output(connector);
1303
1304                 if (iout->type != INTEL_OUTPUT_SDVO)
1305                         continue;
1306
1307                 sdvo = iout->dev_priv;
1308
1309                 if (sdvo->output_device == SDVOB && sdvoB)
1310                         return connector;
1311
1312                 if (sdvo->output_device == SDVOC && !sdvoB)
1313                         return connector;
1314
1315         }
1316
1317         return NULL;
1318 }
1319
1320 int intel_sdvo_supports_hotplug(struct drm_connector *connector)
1321 {
1322         u8 response[2];
1323         u8 status;
1324         struct intel_output *intel_output;
1325         DRM_DEBUG("\n");
1326
1327         if (!connector)
1328                 return 0;
1329
1330         intel_output = to_intel_output(connector);
1331
1332         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_HOT_PLUG_SUPPORT, NULL, 0);
1333         status = intel_sdvo_read_response(intel_output, &response, 2);
1334
1335         if (response[0] !=0)
1336                 return 1;
1337
1338         return 0;
1339 }
1340
1341 void intel_sdvo_set_hotplug(struct drm_connector *connector, int on)
1342 {
1343         u8 response[2];
1344         u8 status;
1345         struct intel_output *intel_output = to_intel_output(connector);
1346
1347         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_ACTIVE_HOT_PLUG, NULL, 0);
1348         intel_sdvo_read_response(intel_output, &response, 2);
1349
1350         if (on) {
1351                 intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_HOT_PLUG_SUPPORT, NULL, 0);
1352                 status = intel_sdvo_read_response(intel_output, &response, 2);
1353
1354                 intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_ACTIVE_HOT_PLUG, &response, 2);
1355         } else {
1356                 response[0] = 0;
1357                 response[1] = 0;
1358                 intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_ACTIVE_HOT_PLUG, &response, 2);
1359         }
1360
1361         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_ACTIVE_HOT_PLUG, NULL, 0);
1362         intel_sdvo_read_response(intel_output, &response, 2);
1363 }
1364
1365 static void
1366 intel_sdvo_hdmi_sink_detect(struct drm_connector *connector)
1367 {
1368         struct intel_output *intel_output = to_intel_output(connector);
1369         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1370         struct edid *edid = NULL;
1371
1372         intel_sdvo_set_control_bus_switch(intel_output, sdvo_priv->ddc_bus);
1373         edid = drm_get_edid(&intel_output->base,
1374                             &intel_output->ddc_bus->adapter);
1375         if (edid != NULL) {
1376                 sdvo_priv->is_hdmi = drm_detect_hdmi_monitor(edid);
1377                 kfree(edid);
1378                 intel_output->base.display_info.raw_edid = NULL;
1379         }
1380 }
1381
1382 static enum drm_connector_status intel_sdvo_detect(struct drm_connector *connector)
1383 {
1384         u8 response[2];
1385         u8 status;
1386         struct intel_output *intel_output = to_intel_output(connector);
1387
1388         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_ATTACHED_DISPLAYS, NULL, 0);
1389         status = intel_sdvo_read_response(intel_output, &response, 2);
1390
1391         DRM_DEBUG("SDVO response %d %d\n", response[0], response[1]);
1392
1393         if (status != SDVO_CMD_STATUS_SUCCESS)
1394                 return connector_status_unknown;
1395
1396         if ((response[0] != 0) || (response[1] != 0)) {
1397                 intel_sdvo_hdmi_sink_detect(connector);
1398                 return connector_status_connected;
1399         } else
1400                 return connector_status_disconnected;
1401 }
1402
1403 static void intel_sdvo_get_ddc_modes(struct drm_connector *connector)
1404 {
1405         struct intel_output *intel_output = to_intel_output(connector);
1406
1407         /* set the bus switch and get the modes */
1408         intel_ddc_get_modes(intel_output);
1409
1410 #if 0
1411         struct drm_device *dev = encoder->dev;
1412         struct drm_i915_private *dev_priv = dev->dev_private;
1413         /* Mac mini hack.  On this device, I get DDC through the analog, which
1414          * load-detects as disconnected.  I fail to DDC through the SDVO DDC,
1415          * but it does load-detect as connected.  So, just steal the DDC bits
1416          * from analog when we fail at finding it the right way.
1417          */
1418         crt = xf86_config->output[0];
1419         intel_output = crt->driver_private;
1420         if (intel_output->type == I830_OUTPUT_ANALOG &&
1421             crt->funcs->detect(crt) == XF86OutputStatusDisconnected) {
1422                 I830I2CInit(pScrn, &intel_output->pDDCBus, GPIOA, "CRTDDC_A");
1423                 edid_mon = xf86OutputGetEDID(crt, intel_output->pDDCBus);
1424                 xf86DestroyI2CBusRec(intel_output->pDDCBus, true, true);
1425         }
1426         if (edid_mon) {
1427                 xf86OutputSetEDID(output, edid_mon);
1428                 modes = xf86OutputGetEDIDModes(output);
1429         }
1430 #endif
1431 }
1432
1433 /**
1434  * This function checks the current TV format, and chooses a default if
1435  * it hasn't been set.
1436  */
1437 static void
1438 intel_sdvo_check_tv_format(struct intel_output *output)
1439 {
1440         struct intel_sdvo_priv *dev_priv = output->dev_priv;
1441         struct intel_sdvo_tv_format format;
1442         uint8_t status;
1443
1444         intel_sdvo_write_cmd(output, SDVO_CMD_GET_TV_FORMAT, NULL, 0);
1445         status = intel_sdvo_read_response(output, &format, sizeof(format));
1446         if (status != SDVO_CMD_STATUS_SUCCESS)
1447                 return;
1448
1449         memcpy(&dev_priv->tv_format, &format, sizeof(format));
1450 }
1451
1452 /*
1453  * Set of SDVO TV modes.
1454  * Note!  This is in reply order (see loop in get_tv_modes).
1455  * XXX: all 60Hz refresh?
1456  */
1457 struct drm_display_mode sdvo_tv_modes[] = {
1458         { DRM_MODE("320x200", DRM_MODE_TYPE_DRIVER, 5815, 320, 321, 384,
1459                    416, 0, 200, 201, 232, 233, 0,
1460                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1461         { DRM_MODE("320x240", DRM_MODE_TYPE_DRIVER, 6814, 320, 321, 384,
1462                    416, 0, 240, 241, 272, 273, 0,
1463                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1464         { DRM_MODE("400x300", DRM_MODE_TYPE_DRIVER, 9910, 400, 401, 464,
1465                    496, 0, 300, 301, 332, 333, 0,
1466                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1467         { DRM_MODE("640x350", DRM_MODE_TYPE_DRIVER, 16913, 640, 641, 704,
1468                    736, 0, 350, 351, 382, 383, 0,
1469                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1470         { DRM_MODE("640x400", DRM_MODE_TYPE_DRIVER, 19121, 640, 641, 704,
1471                    736, 0, 400, 401, 432, 433, 0,
1472                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1473         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 22654, 640, 641, 704,
1474                    736, 0, 480, 481, 512, 513, 0,
1475                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1476         { DRM_MODE("704x480", DRM_MODE_TYPE_DRIVER, 24624, 704, 705, 768,
1477                    800, 0, 480, 481, 512, 513, 0,
1478                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1479         { DRM_MODE("704x576", DRM_MODE_TYPE_DRIVER, 29232, 704, 705, 768,
1480                    800, 0, 576, 577, 608, 609, 0,
1481                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1482         { DRM_MODE("720x350", DRM_MODE_TYPE_DRIVER, 18751, 720, 721, 784,
1483                    816, 0, 350, 351, 382, 383, 0,
1484                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1485         { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 21199, 720, 721, 784,
1486                    816, 0, 400, 401, 432, 433, 0,
1487                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1488         { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 25116, 720, 721, 784,
1489                    816, 0, 480, 481, 512, 513, 0,
1490                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1491         { DRM_MODE("720x540", DRM_MODE_TYPE_DRIVER, 28054, 720, 721, 784,
1492                    816, 0, 540, 541, 572, 573, 0,
1493                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1494         { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 29816, 720, 721, 784,
1495                    816, 0, 576, 577, 608, 609, 0,
1496                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1497         { DRM_MODE("768x576", DRM_MODE_TYPE_DRIVER, 31570, 768, 769, 832,
1498                    864, 0, 576, 577, 608, 609, 0,
1499                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1500         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 34030, 800, 801, 864,
1501                    896, 0, 600, 601, 632, 633, 0,
1502                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1503         { DRM_MODE("832x624", DRM_MODE_TYPE_DRIVER, 36581, 832, 833, 896,
1504                    928, 0, 624, 625, 656, 657, 0,
1505                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1506         { DRM_MODE("920x766", DRM_MODE_TYPE_DRIVER, 48707, 920, 921, 984,
1507                    1016, 0, 766, 767, 798, 799, 0,
1508                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1509         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 53827, 1024, 1025, 1088,
1510                    1120, 0, 768, 769, 800, 801, 0,
1511                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1512         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 87265, 1280, 1281, 1344,
1513                    1376, 0, 1024, 1025, 1056, 1057, 0,
1514                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1515 };
1516
1517 static void intel_sdvo_get_tv_modes(struct drm_connector *connector)
1518 {
1519         struct intel_output *output = to_intel_output(connector);
1520         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
1521         struct intel_sdvo_sdtv_resolution_request tv_res;
1522         uint32_t reply = 0;
1523         uint8_t status;
1524         int i = 0;
1525
1526         intel_sdvo_check_tv_format(output);
1527
1528         /* Read the list of supported input resolutions for the selected TV
1529          * format.
1530          */
1531         memset(&tv_res, 0, sizeof(tv_res));
1532         memcpy(&tv_res, &sdvo_priv->tv_format, sizeof(tv_res));
1533         intel_sdvo_write_cmd(output, SDVO_CMD_GET_SDTV_RESOLUTION_SUPPORT,
1534                              &tv_res, sizeof(tv_res));
1535         status = intel_sdvo_read_response(output, &reply, 3);
1536         if (status != SDVO_CMD_STATUS_SUCCESS)
1537                 return;
1538
1539         for (i = 0; i < ARRAY_SIZE(sdvo_tv_modes); i++)
1540                 if (reply & (1 << i)) {
1541                         struct drm_display_mode *nmode;
1542                         nmode = drm_mode_duplicate(connector->dev,
1543                                         &sdvo_tv_modes[i]);
1544                         if (nmode)
1545                                 drm_mode_probed_add(connector, nmode);
1546                 }
1547 }
1548
1549 static void intel_sdvo_get_lvds_modes(struct drm_connector *connector)
1550 {
1551         struct intel_output *intel_output = to_intel_output(connector);
1552         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1553         struct drm_i915_private *dev_priv = connector->dev->dev_private;
1554
1555         /*
1556          * Attempt to get the mode list from DDC.
1557          * Assume that the preferred modes are
1558          * arranged in priority order.
1559          */
1560         /* set the bus switch and get the modes */
1561         intel_sdvo_set_control_bus_switch(intel_output, sdvo_priv->ddc_bus);
1562         intel_ddc_get_modes(intel_output);
1563         if (list_empty(&connector->probed_modes) == false)
1564                 return;
1565
1566         /* Fetch modes from VBT */
1567         if (dev_priv->sdvo_lvds_vbt_mode != NULL) {
1568                 struct drm_display_mode *newmode;
1569                 newmode = drm_mode_duplicate(connector->dev,
1570                                              dev_priv->sdvo_lvds_vbt_mode);
1571                 if (newmode != NULL) {
1572                         /* Guarantee the mode is preferred */
1573                         newmode->type = (DRM_MODE_TYPE_PREFERRED |
1574                                          DRM_MODE_TYPE_DRIVER);
1575                         drm_mode_probed_add(connector, newmode);
1576                 }
1577         }
1578 }
1579
1580 static int intel_sdvo_get_modes(struct drm_connector *connector)
1581 {
1582         struct intel_output *output = to_intel_output(connector);
1583         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
1584
1585         if (sdvo_priv->is_tv)
1586                 intel_sdvo_get_tv_modes(connector);
1587         else if (sdvo_priv->is_lvds == true)
1588                 intel_sdvo_get_lvds_modes(connector);
1589         else
1590                 intel_sdvo_get_ddc_modes(connector);
1591
1592         if (list_empty(&connector->probed_modes))
1593                 return 0;
1594         return 1;
1595 }
1596
1597 static void intel_sdvo_destroy(struct drm_connector *connector)
1598 {
1599         struct intel_output *intel_output = to_intel_output(connector);
1600
1601         if (intel_output->i2c_bus)
1602                 intel_i2c_destroy(intel_output->i2c_bus);
1603         if (intel_output->ddc_bus)
1604                 intel_i2c_destroy(intel_output->ddc_bus);
1605
1606         drm_sysfs_connector_remove(connector);
1607         drm_connector_cleanup(connector);
1608         kfree(intel_output);
1609 }
1610
1611 static const struct drm_encoder_helper_funcs intel_sdvo_helper_funcs = {
1612         .dpms = intel_sdvo_dpms,
1613         .mode_fixup = intel_sdvo_mode_fixup,
1614         .prepare = intel_encoder_prepare,
1615         .mode_set = intel_sdvo_mode_set,
1616         .commit = intel_encoder_commit,
1617 };
1618
1619 static const struct drm_connector_funcs intel_sdvo_connector_funcs = {
1620         .dpms = drm_helper_connector_dpms,
1621         .save = intel_sdvo_save,
1622         .restore = intel_sdvo_restore,
1623         .detect = intel_sdvo_detect,
1624         .fill_modes = drm_helper_probe_single_connector_modes,
1625         .destroy = intel_sdvo_destroy,
1626 };
1627
1628 static const struct drm_connector_helper_funcs intel_sdvo_connector_helper_funcs = {
1629         .get_modes = intel_sdvo_get_modes,
1630         .mode_valid = intel_sdvo_mode_valid,
1631         .best_encoder = intel_best_encoder,
1632 };
1633
1634 static void intel_sdvo_enc_destroy(struct drm_encoder *encoder)
1635 {
1636         drm_encoder_cleanup(encoder);
1637 }
1638
1639 static const struct drm_encoder_funcs intel_sdvo_enc_funcs = {
1640         .destroy = intel_sdvo_enc_destroy,
1641 };
1642
1643
1644 /**
1645  * Choose the appropriate DDC bus for control bus switch command for this
1646  * SDVO output based on the controlled output.
1647  *
1648  * DDC bus number assignment is in a priority order of RGB outputs, then TMDS
1649  * outputs, then LVDS outputs.
1650  */
1651 static void
1652 intel_sdvo_select_ddc_bus(struct intel_sdvo_priv *dev_priv)
1653 {
1654         uint16_t mask = 0;
1655         unsigned int num_bits;
1656
1657         /* Make a mask of outputs less than or equal to our own priority in the
1658          * list.
1659          */
1660         switch (dev_priv->controlled_output) {
1661         case SDVO_OUTPUT_LVDS1:
1662                 mask |= SDVO_OUTPUT_LVDS1;
1663         case SDVO_OUTPUT_LVDS0:
1664                 mask |= SDVO_OUTPUT_LVDS0;
1665         case SDVO_OUTPUT_TMDS1:
1666                 mask |= SDVO_OUTPUT_TMDS1;
1667         case SDVO_OUTPUT_TMDS0:
1668                 mask |= SDVO_OUTPUT_TMDS0;
1669         case SDVO_OUTPUT_RGB1:
1670                 mask |= SDVO_OUTPUT_RGB1;
1671         case SDVO_OUTPUT_RGB0:
1672                 mask |= SDVO_OUTPUT_RGB0;
1673                 break;
1674         }
1675
1676         /* Count bits to find what number we are in the priority list. */
1677         mask &= dev_priv->caps.output_flags;
1678         num_bits = hweight16(mask);
1679         if (num_bits > 3) {
1680                 /* if more than 3 outputs, default to DDC bus 3 for now */
1681                 num_bits = 3;
1682         }
1683
1684         /* Corresponds to SDVO_CONTROL_BUS_DDCx */
1685         dev_priv->ddc_bus = 1 << num_bits;
1686 }
1687
1688 static bool
1689 intel_sdvo_get_digital_encoding_mode(struct intel_output *output)
1690 {
1691         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
1692         uint8_t status;
1693
1694         intel_sdvo_set_target_output(output, sdvo_priv->controlled_output);
1695
1696         intel_sdvo_write_cmd(output, SDVO_CMD_GET_ENCODE, NULL, 0);
1697         status = intel_sdvo_read_response(output, &sdvo_priv->is_hdmi, 1);
1698         if (status != SDVO_CMD_STATUS_SUCCESS)
1699                 return false;
1700         return true;
1701 }
1702
1703 static struct intel_output *
1704 intel_sdvo_chan_to_intel_output(struct intel_i2c_chan *chan)
1705 {
1706         struct drm_device *dev = chan->drm_dev;
1707         struct drm_connector *connector;
1708         struct intel_output *intel_output = NULL;
1709
1710         list_for_each_entry(connector,
1711                         &dev->mode_config.connector_list, head) {
1712                 if (to_intel_output(connector)->ddc_bus == chan) {
1713                         intel_output = to_intel_output(connector);
1714                         break;
1715                 }
1716         }
1717         return intel_output;
1718 }
1719
1720 static int intel_sdvo_master_xfer(struct i2c_adapter *i2c_adap,
1721                                   struct i2c_msg msgs[], int num)
1722 {
1723         struct intel_output *intel_output;
1724         struct intel_sdvo_priv *sdvo_priv;
1725         struct i2c_algo_bit_data *algo_data;
1726         struct i2c_algorithm *algo;
1727
1728         algo_data = (struct i2c_algo_bit_data *)i2c_adap->algo_data;
1729         intel_output =
1730                 intel_sdvo_chan_to_intel_output(
1731                                 (struct intel_i2c_chan *)(algo_data->data));
1732         if (intel_output == NULL)
1733                 return -EINVAL;
1734
1735         sdvo_priv = intel_output->dev_priv;
1736         algo = (struct i2c_algorithm *)intel_output->i2c_bus->adapter.algo;
1737
1738         intel_sdvo_set_control_bus_switch(intel_output, sdvo_priv->ddc_bus);
1739         return algo->master_xfer(i2c_adap, msgs, num);
1740 }
1741
1742 static struct i2c_algorithm intel_sdvo_i2c_bit_algo = {
1743         .master_xfer    = intel_sdvo_master_xfer,
1744 };
1745
1746 static u8
1747 intel_sdvo_get_slave_addr(struct drm_device *dev, int output_device)
1748 {
1749         struct drm_i915_private *dev_priv = dev->dev_private;
1750         struct sdvo_device_mapping *my_mapping, *other_mapping;
1751
1752         if (output_device == SDVOB) {
1753                 my_mapping = &dev_priv->sdvo_mappings[0];
1754                 other_mapping = &dev_priv->sdvo_mappings[1];
1755         } else {
1756                 my_mapping = &dev_priv->sdvo_mappings[1];
1757                 other_mapping = &dev_priv->sdvo_mappings[0];
1758         }
1759
1760         /* If the BIOS described our SDVO device, take advantage of it. */
1761         if (my_mapping->slave_addr)
1762                 return my_mapping->slave_addr;
1763
1764         /* If the BIOS only described a different SDVO device, use the
1765          * address that it isn't using.
1766          */
1767         if (other_mapping->slave_addr) {
1768                 if (other_mapping->slave_addr == 0x70)
1769                         return 0x72;
1770                 else
1771                         return 0x70;
1772         }
1773
1774         /* No SDVO device info is found for another DVO port,
1775          * so use mapping assumption we had before BIOS parsing.
1776          */
1777         if (output_device == SDVOB)
1778                 return 0x70;
1779         else
1780                 return 0x72;
1781 }
1782
1783 bool intel_sdvo_init(struct drm_device *dev, int output_device)
1784 {
1785         struct drm_connector *connector;
1786         struct intel_output *intel_output;
1787         struct intel_sdvo_priv *sdvo_priv;
1788         struct intel_i2c_chan *i2cbus = NULL;
1789         struct intel_i2c_chan *ddcbus = NULL;
1790         int connector_type;
1791         u8 ch[0x40];
1792         int i;
1793         int encoder_type, output_id;
1794         u8 slave_addr;
1795
1796         intel_output = kcalloc(sizeof(struct intel_output)+sizeof(struct intel_sdvo_priv), 1, GFP_KERNEL);
1797         if (!intel_output) {
1798                 return false;
1799         }
1800
1801         sdvo_priv = (struct intel_sdvo_priv *)(intel_output + 1);
1802         intel_output->type = INTEL_OUTPUT_SDVO;
1803
1804         /* setup the DDC bus. */
1805         if (output_device == SDVOB)
1806                 i2cbus = intel_i2c_create(dev, GPIOE, "SDVOCTRL_E for SDVOB");
1807         else
1808                 i2cbus = intel_i2c_create(dev, GPIOE, "SDVOCTRL_E for SDVOC");
1809
1810         if (!i2cbus)
1811                 goto err_inteloutput;
1812
1813         slave_addr = intel_sdvo_get_slave_addr(dev, output_device);
1814         sdvo_priv->i2c_bus = i2cbus;
1815
1816         if (output_device == SDVOB) {
1817                 output_id = 1;
1818         } else {
1819                 output_id = 2;
1820         }
1821         sdvo_priv->i2c_bus->slave_addr = slave_addr >> 1;
1822         sdvo_priv->output_device = output_device;
1823         intel_output->i2c_bus = i2cbus;
1824         intel_output->dev_priv = sdvo_priv;
1825
1826         /* Read the regs to test if we can talk to the device */
1827         for (i = 0; i < 0x40; i++) {
1828                 if (!intel_sdvo_read_byte(intel_output, i, &ch[i])) {
1829                         DRM_DEBUG_KMS(I915_SDVO,
1830                                         "No SDVO device found on SDVO%c\n",
1831                                         output_device == SDVOB ? 'B' : 'C');
1832                         goto err_i2c;
1833                 }
1834         }
1835
1836         /* setup the DDC bus. */
1837         if (output_device == SDVOB)
1838                 ddcbus = intel_i2c_create(dev, GPIOE, "SDVOB DDC BUS");
1839         else
1840                 ddcbus = intel_i2c_create(dev, GPIOE, "SDVOC DDC BUS");
1841
1842         if (ddcbus == NULL)
1843                 goto err_i2c;
1844
1845         intel_sdvo_i2c_bit_algo.functionality =
1846                 intel_output->i2c_bus->adapter.algo->functionality;
1847         ddcbus->adapter.algo = &intel_sdvo_i2c_bit_algo;
1848         intel_output->ddc_bus = ddcbus;
1849
1850         /* In defaut case sdvo lvds is false */
1851         sdvo_priv->is_lvds = false;
1852         intel_sdvo_get_capabilities(intel_output, &sdvo_priv->caps);
1853
1854         if (sdvo_priv->caps.output_flags &
1855             (SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_TMDS1)) {
1856                 if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_TMDS0)
1857                         sdvo_priv->controlled_output = SDVO_OUTPUT_TMDS0;
1858                 else
1859                         sdvo_priv->controlled_output = SDVO_OUTPUT_TMDS1;
1860
1861                 encoder_type = DRM_MODE_ENCODER_TMDS;
1862                 connector_type = DRM_MODE_CONNECTOR_DVID;
1863
1864                 if (intel_sdvo_get_supp_encode(intel_output,
1865                                                &sdvo_priv->encode) &&
1866                     intel_sdvo_get_digital_encoding_mode(intel_output) &&
1867                     sdvo_priv->is_hdmi) {
1868                         /* enable hdmi encoding mode if supported */
1869                         intel_sdvo_set_encode(intel_output, SDVO_ENCODE_HDMI);
1870                         intel_sdvo_set_colorimetry(intel_output,
1871                                                    SDVO_COLORIMETRY_RGB256);
1872                         connector_type = DRM_MODE_CONNECTOR_HDMIA;
1873                 }
1874         }
1875         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_SVID0)
1876         {
1877                 sdvo_priv->controlled_output = SDVO_OUTPUT_SVID0;
1878                 encoder_type = DRM_MODE_ENCODER_TVDAC;
1879                 connector_type = DRM_MODE_CONNECTOR_SVIDEO;
1880                 sdvo_priv->is_tv = true;
1881                 intel_output->needs_tv_clock = true;
1882         }
1883         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_RGB0)
1884         {
1885                 sdvo_priv->controlled_output = SDVO_OUTPUT_RGB0;
1886                 encoder_type = DRM_MODE_ENCODER_DAC;
1887                 connector_type = DRM_MODE_CONNECTOR_VGA;
1888         }
1889         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_RGB1)
1890         {
1891                 sdvo_priv->controlled_output = SDVO_OUTPUT_RGB1;
1892                 encoder_type = DRM_MODE_ENCODER_DAC;
1893                 connector_type = DRM_MODE_CONNECTOR_VGA;
1894         }
1895         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_LVDS0)
1896         {
1897                 sdvo_priv->controlled_output = SDVO_OUTPUT_LVDS0;
1898                 encoder_type = DRM_MODE_ENCODER_LVDS;
1899                 connector_type = DRM_MODE_CONNECTOR_LVDS;
1900                 sdvo_priv->is_lvds = true;
1901         }
1902         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_LVDS1)
1903         {
1904                 sdvo_priv->controlled_output = SDVO_OUTPUT_LVDS1;
1905                 encoder_type = DRM_MODE_ENCODER_LVDS;
1906                 connector_type = DRM_MODE_CONNECTOR_LVDS;
1907                 sdvo_priv->is_lvds = true;
1908         }
1909         else
1910         {
1911                 unsigned char bytes[2];
1912
1913                 sdvo_priv->controlled_output = 0;
1914                 memcpy (bytes, &sdvo_priv->caps.output_flags, 2);
1915                 DRM_DEBUG_KMS(I915_SDVO,
1916                                 "%s: Unknown SDVO output type (0x%02x%02x)\n",
1917                                   SDVO_NAME(sdvo_priv),
1918                                   bytes[0], bytes[1]);
1919                 encoder_type = DRM_MODE_ENCODER_NONE;
1920                 connector_type = DRM_MODE_CONNECTOR_Unknown;
1921                 goto err_i2c;
1922         }
1923
1924         connector = &intel_output->base;
1925         drm_connector_init(dev, connector, &intel_sdvo_connector_funcs,
1926                            connector_type);
1927         drm_connector_helper_add(connector, &intel_sdvo_connector_helper_funcs);
1928         connector->interlace_allowed = 0;
1929         connector->doublescan_allowed = 0;
1930         connector->display_info.subpixel_order = SubPixelHorizontalRGB;
1931
1932         drm_encoder_init(dev, &intel_output->enc, &intel_sdvo_enc_funcs, encoder_type);
1933         drm_encoder_helper_add(&intel_output->enc, &intel_sdvo_helper_funcs);
1934
1935         drm_mode_connector_attach_encoder(&intel_output->base, &intel_output->enc);
1936         drm_sysfs_connector_add(connector);
1937
1938         intel_sdvo_select_ddc_bus(sdvo_priv);
1939
1940         /* Set the input timing to the screen. Assume always input 0. */
1941         intel_sdvo_set_target_input(intel_output, true, false);
1942
1943         intel_sdvo_get_input_pixel_clock_range(intel_output,
1944                                                &sdvo_priv->pixel_clock_min,
1945                                                &sdvo_priv->pixel_clock_max);
1946
1947
1948         DRM_DEBUG_KMS(I915_SDVO, "%s device VID/DID: %02X:%02X.%02X, "
1949                         "clock range %dMHz - %dMHz, "
1950                         "input 1: %c, input 2: %c, "
1951                         "output 1: %c, output 2: %c\n",
1952                         SDVO_NAME(sdvo_priv),
1953                         sdvo_priv->caps.vendor_id, sdvo_priv->caps.device_id,
1954                         sdvo_priv->caps.device_rev_id,
1955                         sdvo_priv->pixel_clock_min / 1000,
1956                         sdvo_priv->pixel_clock_max / 1000,
1957                         (sdvo_priv->caps.sdvo_inputs_mask & 0x1) ? 'Y' : 'N',
1958                         (sdvo_priv->caps.sdvo_inputs_mask & 0x2) ? 'Y' : 'N',
1959                         /* check currently supported outputs */
1960                         sdvo_priv->caps.output_flags &
1961                         (SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_RGB0) ? 'Y' : 'N',
1962                         sdvo_priv->caps.output_flags &
1963                         (SDVO_OUTPUT_TMDS1 | SDVO_OUTPUT_RGB1) ? 'Y' : 'N');
1964
1965         return true;
1966
1967 err_i2c:
1968         if (ddcbus != NULL)
1969                 intel_i2c_destroy(intel_output->ddc_bus);
1970         intel_i2c_destroy(intel_output->i2c_bus);
1971 err_inteloutput:
1972         kfree(intel_output);
1973
1974         return false;
1975 }