1 /* 2 * Copyright 2012-15 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #include <linux/slab.h> 27 28 #include "dm_services.h" 29 30 31 #include "dc_types.h" 32 #include "core_types.h" 33 34 #include "include/grph_object_id.h" 35 #include "include/logger_interface.h" 36 37 #include "dce_clock_source.h" 38 #include "clk_mgr.h" 39 40 #include "reg_helper.h" 41 42 #define REG(reg)\ 43 (clk_src->regs->reg) 44 45 #define CTX \ 46 clk_src->base.ctx 47 48 #define DC_LOGGER_INIT() 49 50 #undef FN 51 #define FN(reg_name, field_name) \ 52 clk_src->cs_shift->field_name, clk_src->cs_mask->field_name 53 54 #define FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM 6 55 #define CALC_PLL_CLK_SRC_ERR_TOLERANCE 1 56 #define MAX_PLL_CALC_ERROR 0xFFFFFFFF 57 58 #define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0])) 59 60 static const struct spread_spectrum_data *get_ss_data_entry( 61 struct dce110_clk_src *clk_src, 62 enum signal_type signal, 63 uint32_t pix_clk_khz) 64 { 65 66 uint32_t entrys_num; 67 uint32_t i; 68 struct spread_spectrum_data *ss_parm = NULL; 69 struct spread_spectrum_data *ret = NULL; 70 71 switch (signal) { 72 case SIGNAL_TYPE_DVI_SINGLE_LINK: 73 case SIGNAL_TYPE_DVI_DUAL_LINK: 74 ss_parm = clk_src->dvi_ss_params; 75 entrys_num = clk_src->dvi_ss_params_cnt; 76 break; 77 78 case SIGNAL_TYPE_HDMI_TYPE_A: 79 ss_parm = clk_src->hdmi_ss_params; 80 entrys_num = clk_src->hdmi_ss_params_cnt; 81 break; 82 83 case SIGNAL_TYPE_LVDS: 84 ss_parm = clk_src->lvds_ss_params; 85 entrys_num = clk_src->lvds_ss_params_cnt; 86 break; 87 88 case SIGNAL_TYPE_DISPLAY_PORT: 89 case SIGNAL_TYPE_DISPLAY_PORT_MST: 90 case SIGNAL_TYPE_EDP: 91 case SIGNAL_TYPE_VIRTUAL: 92 ss_parm = clk_src->dp_ss_params; 93 entrys_num = clk_src->dp_ss_params_cnt; 94 break; 95 96 default: 97 ss_parm = NULL; 98 entrys_num = 0; 99 break; 100 } 101 102 if (ss_parm == NULL) 103 return ret; 104 105 for (i = 0; i < entrys_num; ++i, ++ss_parm) { 106 if (ss_parm->freq_range_khz >= pix_clk_khz) { 107 ret = ss_parm; 108 break; 109 } 110 } 111 112 return ret; 113 } 114 115 /** 116 * Function: calculate_fb_and_fractional_fb_divider 117 * 118 * * DESCRIPTION: Calculates feedback and fractional feedback dividers values 119 * 120 *PARAMETERS: 121 * targetPixelClock Desired frequency in 100 Hz 122 * ref_divider Reference divider (already known) 123 * postDivider Post Divider (already known) 124 * feedback_divider_param Pointer where to store 125 * calculated feedback divider value 126 * fract_feedback_divider_param Pointer where to store 127 * calculated fract feedback divider value 128 * 129 *RETURNS: 130 * It fills the locations pointed by feedback_divider_param 131 * and fract_feedback_divider_param 132 * It returns - true if feedback divider not 0 133 * - false should never happen) 134 */ 135 static bool calculate_fb_and_fractional_fb_divider( 136 struct calc_pll_clock_source *calc_pll_cs, 137 uint32_t target_pix_clk_100hz, 138 uint32_t ref_divider, 139 uint32_t post_divider, 140 uint32_t *feedback_divider_param, 141 uint32_t *fract_feedback_divider_param) 142 { 143 uint64_t feedback_divider; 144 145 feedback_divider = 146 (uint64_t)target_pix_clk_100hz * ref_divider * post_divider; 147 feedback_divider *= 10; 148 /* additional factor, since we divide by 10 afterwards */ 149 feedback_divider *= (uint64_t)(calc_pll_cs->fract_fb_divider_factor); 150 feedback_divider = div_u64(feedback_divider, calc_pll_cs->ref_freq_khz * 10ull); 151 152 /*Round to the number of precision 153 * The following code replace the old code (ullfeedbackDivider + 5)/10 154 * for example if the difference between the number 155 * of fractional feedback decimal point and the fractional FB Divider precision 156 * is 2 then the equation becomes (ullfeedbackDivider + 5*100) / (10*100))*/ 157 158 feedback_divider += 5ULL * 159 calc_pll_cs->fract_fb_divider_precision_factor; 160 feedback_divider = 161 div_u64(feedback_divider, 162 calc_pll_cs->fract_fb_divider_precision_factor * 10); 163 feedback_divider *= (uint64_t) 164 (calc_pll_cs->fract_fb_divider_precision_factor); 165 166 *feedback_divider_param = 167 div_u64_rem( 168 feedback_divider, 169 calc_pll_cs->fract_fb_divider_factor, 170 fract_feedback_divider_param); 171 172 if (*feedback_divider_param != 0) 173 return true; 174 return false; 175 } 176 177 /** 178 *calc_fb_divider_checking_tolerance 179 * 180 *DESCRIPTION: Calculates Feedback and Fractional Feedback divider values 181 * for passed Reference and Post divider, checking for tolerance. 182 *PARAMETERS: 183 * pll_settings Pointer to structure 184 * ref_divider Reference divider (already known) 185 * postDivider Post Divider (already known) 186 * tolerance Tolerance for Calculated Pixel Clock to be within 187 * 188 *RETURNS: 189 * It fills the PLLSettings structure with PLL Dividers values 190 * if calculated values are within required tolerance 191 * It returns - true if error is within tolerance 192 * - false if error is not within tolerance 193 */ 194 static bool calc_fb_divider_checking_tolerance( 195 struct calc_pll_clock_source *calc_pll_cs, 196 struct pll_settings *pll_settings, 197 uint32_t ref_divider, 198 uint32_t post_divider, 199 uint32_t tolerance) 200 { 201 uint32_t feedback_divider; 202 uint32_t fract_feedback_divider; 203 uint32_t actual_calculated_clock_100hz; 204 uint32_t abs_err; 205 uint64_t actual_calc_clk_100hz; 206 207 calculate_fb_and_fractional_fb_divider( 208 calc_pll_cs, 209 pll_settings->adjusted_pix_clk_100hz, 210 ref_divider, 211 post_divider, 212 &feedback_divider, 213 &fract_feedback_divider); 214 215 /*Actual calculated value*/ 216 actual_calc_clk_100hz = (uint64_t)feedback_divider * 217 calc_pll_cs->fract_fb_divider_factor + 218 fract_feedback_divider; 219 actual_calc_clk_100hz *= calc_pll_cs->ref_freq_khz * 10; 220 actual_calc_clk_100hz = 221 div_u64(actual_calc_clk_100hz, 222 ref_divider * post_divider * 223 calc_pll_cs->fract_fb_divider_factor); 224 225 actual_calculated_clock_100hz = (uint32_t)(actual_calc_clk_100hz); 226 227 abs_err = (actual_calculated_clock_100hz > 228 pll_settings->adjusted_pix_clk_100hz) 229 ? actual_calculated_clock_100hz - 230 pll_settings->adjusted_pix_clk_100hz 231 : pll_settings->adjusted_pix_clk_100hz - 232 actual_calculated_clock_100hz; 233 234 if (abs_err <= tolerance) { 235 /*found good values*/ 236 pll_settings->reference_freq = calc_pll_cs->ref_freq_khz; 237 pll_settings->reference_divider = ref_divider; 238 pll_settings->feedback_divider = feedback_divider; 239 pll_settings->fract_feedback_divider = fract_feedback_divider; 240 pll_settings->pix_clk_post_divider = post_divider; 241 pll_settings->calculated_pix_clk_100hz = 242 actual_calculated_clock_100hz; 243 pll_settings->vco_freq = 244 actual_calculated_clock_100hz * post_divider / 10; 245 return true; 246 } 247 return false; 248 } 249 250 static bool calc_pll_dividers_in_range( 251 struct calc_pll_clock_source *calc_pll_cs, 252 struct pll_settings *pll_settings, 253 uint32_t min_ref_divider, 254 uint32_t max_ref_divider, 255 uint32_t min_post_divider, 256 uint32_t max_post_divider, 257 uint32_t err_tolerance) 258 { 259 uint32_t ref_divider; 260 uint32_t post_divider; 261 uint32_t tolerance; 262 263 /* This is err_tolerance / 10000 = 0.0025 - acceptable error of 0.25% 264 * This is errorTolerance / 10000 = 0.0001 - acceptable error of 0.01%*/ 265 tolerance = (pll_settings->adjusted_pix_clk_100hz * err_tolerance) / 266 100000; 267 if (tolerance < CALC_PLL_CLK_SRC_ERR_TOLERANCE) 268 tolerance = CALC_PLL_CLK_SRC_ERR_TOLERANCE; 269 270 for ( 271 post_divider = max_post_divider; 272 post_divider >= min_post_divider; 273 --post_divider) { 274 for ( 275 ref_divider = min_ref_divider; 276 ref_divider <= max_ref_divider; 277 ++ref_divider) { 278 if (calc_fb_divider_checking_tolerance( 279 calc_pll_cs, 280 pll_settings, 281 ref_divider, 282 post_divider, 283 tolerance)) { 284 return true; 285 } 286 } 287 } 288 289 return false; 290 } 291 292 static uint32_t calculate_pixel_clock_pll_dividers( 293 struct calc_pll_clock_source *calc_pll_cs, 294 struct pll_settings *pll_settings) 295 { 296 uint32_t err_tolerance; 297 uint32_t min_post_divider; 298 uint32_t max_post_divider; 299 uint32_t min_ref_divider; 300 uint32_t max_ref_divider; 301 302 if (pll_settings->adjusted_pix_clk_100hz == 0) { 303 DC_LOG_ERROR( 304 "%s Bad requested pixel clock", __func__); 305 return MAX_PLL_CALC_ERROR; 306 } 307 308 /* 1) Find Post divider ranges */ 309 if (pll_settings->pix_clk_post_divider) { 310 min_post_divider = pll_settings->pix_clk_post_divider; 311 max_post_divider = pll_settings->pix_clk_post_divider; 312 } else { 313 min_post_divider = calc_pll_cs->min_pix_clock_pll_post_divider; 314 if (min_post_divider * pll_settings->adjusted_pix_clk_100hz < 315 calc_pll_cs->min_vco_khz * 10) { 316 min_post_divider = calc_pll_cs->min_vco_khz * 10 / 317 pll_settings->adjusted_pix_clk_100hz; 318 if ((min_post_divider * 319 pll_settings->adjusted_pix_clk_100hz) < 320 calc_pll_cs->min_vco_khz * 10) 321 min_post_divider++; 322 } 323 324 max_post_divider = calc_pll_cs->max_pix_clock_pll_post_divider; 325 if (max_post_divider * pll_settings->adjusted_pix_clk_100hz 326 > calc_pll_cs->max_vco_khz * 10) 327 max_post_divider = calc_pll_cs->max_vco_khz * 10 / 328 pll_settings->adjusted_pix_clk_100hz; 329 } 330 331 /* 2) Find Reference divider ranges 332 * When SS is enabled, or for Display Port even without SS, 333 * pll_settings->referenceDivider is not zero. 334 * So calculate PPLL FB and fractional FB divider 335 * using the passed reference divider*/ 336 337 if (pll_settings->reference_divider) { 338 min_ref_divider = pll_settings->reference_divider; 339 max_ref_divider = pll_settings->reference_divider; 340 } else { 341 min_ref_divider = ((calc_pll_cs->ref_freq_khz 342 / calc_pll_cs->max_pll_input_freq_khz) 343 > calc_pll_cs->min_pll_ref_divider) 344 ? calc_pll_cs->ref_freq_khz 345 / calc_pll_cs->max_pll_input_freq_khz 346 : calc_pll_cs->min_pll_ref_divider; 347 348 max_ref_divider = ((calc_pll_cs->ref_freq_khz 349 / calc_pll_cs->min_pll_input_freq_khz) 350 < calc_pll_cs->max_pll_ref_divider) 351 ? calc_pll_cs->ref_freq_khz / 352 calc_pll_cs->min_pll_input_freq_khz 353 : calc_pll_cs->max_pll_ref_divider; 354 } 355 356 /* If some parameters are invalid we could have scenario when "min">"max" 357 * which produced endless loop later. 358 * We should investigate why we get the wrong parameters. 359 * But to follow the similar logic when "adjustedPixelClock" is set to be 0 360 * it is better to return here than cause system hang/watchdog timeout later. 361 * ## SVS Wed 15 Jul 2009 */ 362 363 if (min_post_divider > max_post_divider) { 364 DC_LOG_ERROR( 365 "%s Post divider range is invalid", __func__); 366 return MAX_PLL_CALC_ERROR; 367 } 368 369 if (min_ref_divider > max_ref_divider) { 370 DC_LOG_ERROR( 371 "%s Reference divider range is invalid", __func__); 372 return MAX_PLL_CALC_ERROR; 373 } 374 375 /* 3) Try to find PLL dividers given ranges 376 * starting with minimal error tolerance. 377 * Increase error tolerance until PLL dividers found*/ 378 err_tolerance = MAX_PLL_CALC_ERROR; 379 380 while (!calc_pll_dividers_in_range( 381 calc_pll_cs, 382 pll_settings, 383 min_ref_divider, 384 max_ref_divider, 385 min_post_divider, 386 max_post_divider, 387 err_tolerance)) 388 err_tolerance += (err_tolerance > 10) 389 ? (err_tolerance / 10) 390 : 1; 391 392 return err_tolerance; 393 } 394 395 static bool pll_adjust_pix_clk( 396 struct dce110_clk_src *clk_src, 397 struct pixel_clk_params *pix_clk_params, 398 struct pll_settings *pll_settings) 399 { 400 uint32_t actual_pix_clk_100hz = 0; 401 uint32_t requested_clk_100hz = 0; 402 struct bp_adjust_pixel_clock_parameters bp_adjust_pixel_clock_params = { 403 0 }; 404 enum bp_result bp_result; 405 switch (pix_clk_params->signal_type) { 406 case SIGNAL_TYPE_HDMI_TYPE_A: { 407 requested_clk_100hz = pix_clk_params->requested_pix_clk_100hz; 408 if (pix_clk_params->pixel_encoding != PIXEL_ENCODING_YCBCR422) { 409 switch (pix_clk_params->color_depth) { 410 case COLOR_DEPTH_101010: 411 requested_clk_100hz = (requested_clk_100hz * 5) >> 2; 412 break; /* x1.25*/ 413 case COLOR_DEPTH_121212: 414 requested_clk_100hz = (requested_clk_100hz * 6) >> 2; 415 break; /* x1.5*/ 416 case COLOR_DEPTH_161616: 417 requested_clk_100hz = requested_clk_100hz * 2; 418 break; /* x2.0*/ 419 default: 420 break; 421 } 422 } 423 actual_pix_clk_100hz = requested_clk_100hz; 424 } 425 break; 426 427 case SIGNAL_TYPE_DISPLAY_PORT: 428 case SIGNAL_TYPE_DISPLAY_PORT_MST: 429 case SIGNAL_TYPE_EDP: 430 requested_clk_100hz = pix_clk_params->requested_sym_clk * 10; 431 actual_pix_clk_100hz = pix_clk_params->requested_pix_clk_100hz; 432 break; 433 434 default: 435 requested_clk_100hz = pix_clk_params->requested_pix_clk_100hz; 436 actual_pix_clk_100hz = pix_clk_params->requested_pix_clk_100hz; 437 break; 438 } 439 440 bp_adjust_pixel_clock_params.pixel_clock = requested_clk_100hz / 10; 441 bp_adjust_pixel_clock_params. 442 encoder_object_id = pix_clk_params->encoder_object_id; 443 bp_adjust_pixel_clock_params.signal_type = pix_clk_params->signal_type; 444 bp_adjust_pixel_clock_params. 445 ss_enable = pix_clk_params->flags.ENABLE_SS; 446 bp_result = clk_src->bios->funcs->adjust_pixel_clock( 447 clk_src->bios, &bp_adjust_pixel_clock_params); 448 if (bp_result == BP_RESULT_OK) { 449 pll_settings->actual_pix_clk_100hz = actual_pix_clk_100hz; 450 pll_settings->adjusted_pix_clk_100hz = 451 bp_adjust_pixel_clock_params.adjusted_pixel_clock * 10; 452 pll_settings->reference_divider = 453 bp_adjust_pixel_clock_params.reference_divider; 454 pll_settings->pix_clk_post_divider = 455 bp_adjust_pixel_clock_params.pixel_clock_post_divider; 456 457 return true; 458 } 459 460 return false; 461 } 462 463 /** 464 * Calculate PLL Dividers for given Clock Value. 465 * First will call VBIOS Adjust Exec table to check if requested Pixel clock 466 * will be Adjusted based on usage. 467 * Then it will calculate PLL Dividers for this Adjusted clock using preferred 468 * method (Maximum VCO frequency). 469 * 470 * \return 471 * Calculation error in units of 0.01% 472 */ 473 474 static uint32_t dce110_get_pix_clk_dividers_helper ( 475 struct dce110_clk_src *clk_src, 476 struct pll_settings *pll_settings, 477 struct pixel_clk_params *pix_clk_params) 478 { 479 uint32_t field = 0; 480 uint32_t pll_calc_error = MAX_PLL_CALC_ERROR; 481 DC_LOGGER_INIT(); 482 /* Check if reference clock is external (not pcie/xtalin) 483 * HW Dce80 spec: 484 * 00 - PCIE_REFCLK, 01 - XTALIN, 02 - GENERICA, 03 - GENERICB 485 * 04 - HSYNCA, 05 - GENLK_CLK, 06 - PCIE_REFCLK, 07 - DVOCLK0 */ 486 REG_GET(PLL_CNTL, PLL_REF_DIV_SRC, &field); 487 pll_settings->use_external_clk = (field > 1); 488 489 /* VBIOS by default enables DP SS (spread on IDCLK) for DCE 8.0 always 490 * (we do not care any more from SI for some older DP Sink which 491 * does not report SS support, no known issues) */ 492 if ((pix_clk_params->flags.ENABLE_SS) || 493 (dc_is_dp_signal(pix_clk_params->signal_type))) { 494 495 const struct spread_spectrum_data *ss_data = get_ss_data_entry( 496 clk_src, 497 pix_clk_params->signal_type, 498 pll_settings->adjusted_pix_clk_100hz / 10); 499 500 if (NULL != ss_data) 501 pll_settings->ss_percentage = ss_data->percentage; 502 } 503 504 /* Check VBIOS AdjustPixelClock Exec table */ 505 if (!pll_adjust_pix_clk(clk_src, pix_clk_params, pll_settings)) { 506 /* Should never happen, ASSERT and fill up values to be able 507 * to continue. */ 508 DC_LOG_ERROR( 509 "%s: Failed to adjust pixel clock!!", __func__); 510 pll_settings->actual_pix_clk_100hz = 511 pix_clk_params->requested_pix_clk_100hz; 512 pll_settings->adjusted_pix_clk_100hz = 513 pix_clk_params->requested_pix_clk_100hz; 514 515 if (dc_is_dp_signal(pix_clk_params->signal_type)) 516 pll_settings->adjusted_pix_clk_100hz = 1000000; 517 } 518 519 /* Calculate Dividers */ 520 if (pix_clk_params->signal_type == SIGNAL_TYPE_HDMI_TYPE_A) 521 /*Calculate Dividers by HDMI object, no SS case or SS case */ 522 pll_calc_error = 523 calculate_pixel_clock_pll_dividers( 524 &clk_src->calc_pll_hdmi, 525 pll_settings); 526 else 527 /*Calculate Dividers by default object, no SS case or SS case */ 528 pll_calc_error = 529 calculate_pixel_clock_pll_dividers( 530 &clk_src->calc_pll, 531 pll_settings); 532 533 return pll_calc_error; 534 } 535 536 static void dce112_get_pix_clk_dividers_helper ( 537 struct dce110_clk_src *clk_src, 538 struct pll_settings *pll_settings, 539 struct pixel_clk_params *pix_clk_params) 540 { 541 uint32_t actual_pixel_clock_100hz; 542 543 actual_pixel_clock_100hz = pix_clk_params->requested_pix_clk_100hz; 544 /* Calculate Dividers */ 545 if (pix_clk_params->signal_type == SIGNAL_TYPE_HDMI_TYPE_A) { 546 switch (pix_clk_params->color_depth) { 547 case COLOR_DEPTH_101010: 548 actual_pixel_clock_100hz = (actual_pixel_clock_100hz * 5) >> 2; 549 break; 550 case COLOR_DEPTH_121212: 551 actual_pixel_clock_100hz = (actual_pixel_clock_100hz * 6) >> 2; 552 break; 553 case COLOR_DEPTH_161616: 554 actual_pixel_clock_100hz = actual_pixel_clock_100hz * 2; 555 break; 556 default: 557 break; 558 } 559 } 560 pll_settings->actual_pix_clk_100hz = actual_pixel_clock_100hz; 561 pll_settings->adjusted_pix_clk_100hz = actual_pixel_clock_100hz; 562 pll_settings->calculated_pix_clk_100hz = pix_clk_params->requested_pix_clk_100hz; 563 } 564 565 static uint32_t dce110_get_pix_clk_dividers( 566 struct clock_source *cs, 567 struct pixel_clk_params *pix_clk_params, 568 struct pll_settings *pll_settings) 569 { 570 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(cs); 571 uint32_t pll_calc_error = MAX_PLL_CALC_ERROR; 572 DC_LOGGER_INIT(); 573 574 if (pix_clk_params == NULL || pll_settings == NULL 575 || pix_clk_params->requested_pix_clk_100hz == 0) { 576 DC_LOG_ERROR( 577 "%s: Invalid parameters!!\n", __func__); 578 return pll_calc_error; 579 } 580 581 memset(pll_settings, 0, sizeof(*pll_settings)); 582 583 if (cs->id == CLOCK_SOURCE_ID_DP_DTO || 584 cs->id == CLOCK_SOURCE_ID_EXTERNAL) { 585 pll_settings->adjusted_pix_clk_100hz = clk_src->ext_clk_khz * 10; 586 pll_settings->calculated_pix_clk_100hz = clk_src->ext_clk_khz * 10; 587 pll_settings->actual_pix_clk_100hz = 588 pix_clk_params->requested_pix_clk_100hz; 589 return 0; 590 } 591 592 pll_calc_error = dce110_get_pix_clk_dividers_helper(clk_src, 593 pll_settings, pix_clk_params); 594 595 return pll_calc_error; 596 } 597 598 static uint32_t dce112_get_pix_clk_dividers( 599 struct clock_source *cs, 600 struct pixel_clk_params *pix_clk_params, 601 struct pll_settings *pll_settings) 602 { 603 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(cs); 604 DC_LOGGER_INIT(); 605 606 if (pix_clk_params == NULL || pll_settings == NULL 607 || pix_clk_params->requested_pix_clk_100hz == 0) { 608 DC_LOG_ERROR( 609 "%s: Invalid parameters!!\n", __func__); 610 return -1; 611 } 612 613 memset(pll_settings, 0, sizeof(*pll_settings)); 614 615 if (cs->id == CLOCK_SOURCE_ID_DP_DTO || 616 cs->id == CLOCK_SOURCE_ID_EXTERNAL) { 617 pll_settings->adjusted_pix_clk_100hz = clk_src->ext_clk_khz * 10; 618 pll_settings->calculated_pix_clk_100hz = clk_src->ext_clk_khz * 10; 619 pll_settings->actual_pix_clk_100hz = 620 pix_clk_params->requested_pix_clk_100hz; 621 return -1; 622 } 623 624 dce112_get_pix_clk_dividers_helper(clk_src, 625 pll_settings, pix_clk_params); 626 627 return 0; 628 } 629 630 static bool disable_spread_spectrum(struct dce110_clk_src *clk_src) 631 { 632 enum bp_result result; 633 struct bp_spread_spectrum_parameters bp_ss_params = {0}; 634 635 bp_ss_params.pll_id = clk_src->base.id; 636 637 /*Call ASICControl to process ATOMBIOS Exec table*/ 638 result = clk_src->bios->funcs->enable_spread_spectrum_on_ppll( 639 clk_src->bios, 640 &bp_ss_params, 641 false); 642 643 return result == BP_RESULT_OK; 644 } 645 646 static bool calculate_ss( 647 const struct pll_settings *pll_settings, 648 const struct spread_spectrum_data *ss_data, 649 struct delta_sigma_data *ds_data) 650 { 651 struct fixed31_32 fb_div; 652 struct fixed31_32 ss_amount; 653 struct fixed31_32 ss_nslip_amount; 654 struct fixed31_32 ss_ds_frac_amount; 655 struct fixed31_32 ss_step_size; 656 struct fixed31_32 modulation_time; 657 658 if (ds_data == NULL) 659 return false; 660 if (ss_data == NULL) 661 return false; 662 if (ss_data->percentage == 0) 663 return false; 664 if (pll_settings == NULL) 665 return false; 666 667 memset(ds_data, 0, sizeof(struct delta_sigma_data)); 668 669 /* compute SS_AMOUNT_FBDIV & SS_AMOUNT_NFRAC_SLIP & SS_AMOUNT_DSFRAC*/ 670 /* 6 decimal point support in fractional feedback divider */ 671 fb_div = dc_fixpt_from_fraction( 672 pll_settings->fract_feedback_divider, 1000000); 673 fb_div = dc_fixpt_add_int(fb_div, pll_settings->feedback_divider); 674 675 ds_data->ds_frac_amount = 0; 676 /*spreadSpectrumPercentage is in the unit of .01%, 677 * so have to divided by 100 * 100*/ 678 ss_amount = dc_fixpt_mul( 679 fb_div, dc_fixpt_from_fraction(ss_data->percentage, 680 100 * ss_data->percentage_divider)); 681 ds_data->feedback_amount = dc_fixpt_floor(ss_amount); 682 683 ss_nslip_amount = dc_fixpt_sub(ss_amount, 684 dc_fixpt_from_int(ds_data->feedback_amount)); 685 ss_nslip_amount = dc_fixpt_mul_int(ss_nslip_amount, 10); 686 ds_data->nfrac_amount = dc_fixpt_floor(ss_nslip_amount); 687 688 ss_ds_frac_amount = dc_fixpt_sub(ss_nslip_amount, 689 dc_fixpt_from_int(ds_data->nfrac_amount)); 690 ss_ds_frac_amount = dc_fixpt_mul_int(ss_ds_frac_amount, 65536); 691 ds_data->ds_frac_amount = dc_fixpt_floor(ss_ds_frac_amount); 692 693 /* compute SS_STEP_SIZE_DSFRAC */ 694 modulation_time = dc_fixpt_from_fraction( 695 pll_settings->reference_freq * 1000, 696 pll_settings->reference_divider * ss_data->modulation_freq_hz); 697 698 if (ss_data->flags.CENTER_SPREAD) 699 modulation_time = dc_fixpt_div_int(modulation_time, 4); 700 else 701 modulation_time = dc_fixpt_div_int(modulation_time, 2); 702 703 ss_step_size = dc_fixpt_div(ss_amount, modulation_time); 704 /* SS_STEP_SIZE_DSFRAC_DEC = Int(SS_STEP_SIZE * 2 ^ 16 * 10)*/ 705 ss_step_size = dc_fixpt_mul_int(ss_step_size, 65536 * 10); 706 ds_data->ds_frac_size = dc_fixpt_floor(ss_step_size); 707 708 return true; 709 } 710 711 static bool enable_spread_spectrum( 712 struct dce110_clk_src *clk_src, 713 enum signal_type signal, struct pll_settings *pll_settings) 714 { 715 struct bp_spread_spectrum_parameters bp_params = {0}; 716 struct delta_sigma_data d_s_data; 717 const struct spread_spectrum_data *ss_data = NULL; 718 719 ss_data = get_ss_data_entry( 720 clk_src, 721 signal, 722 pll_settings->calculated_pix_clk_100hz / 10); 723 724 /* Pixel clock PLL has been programmed to generate desired pixel clock, 725 * now enable SS on pixel clock */ 726 /* TODO is it OK to return true not doing anything ??*/ 727 if (ss_data != NULL && pll_settings->ss_percentage != 0) { 728 if (calculate_ss(pll_settings, ss_data, &d_s_data)) { 729 bp_params.ds.feedback_amount = 730 d_s_data.feedback_amount; 731 bp_params.ds.nfrac_amount = 732 d_s_data.nfrac_amount; 733 bp_params.ds.ds_frac_size = d_s_data.ds_frac_size; 734 bp_params.ds_frac_amount = 735 d_s_data.ds_frac_amount; 736 bp_params.flags.DS_TYPE = 1; 737 bp_params.pll_id = clk_src->base.id; 738 bp_params.percentage = ss_data->percentage; 739 if (ss_data->flags.CENTER_SPREAD) 740 bp_params.flags.CENTER_SPREAD = 1; 741 if (ss_data->flags.EXTERNAL_SS) 742 bp_params.flags.EXTERNAL_SS = 1; 743 744 if (BP_RESULT_OK != 745 clk_src->bios->funcs-> 746 enable_spread_spectrum_on_ppll( 747 clk_src->bios, 748 &bp_params, 749 true)) 750 return false; 751 } else 752 return false; 753 } 754 return true; 755 } 756 757 static void dce110_program_pixel_clk_resync( 758 struct dce110_clk_src *clk_src, 759 enum signal_type signal_type, 760 enum dc_color_depth colordepth) 761 { 762 REG_UPDATE(RESYNC_CNTL, 763 DCCG_DEEP_COLOR_CNTL1, 0); 764 /* 765 24 bit mode: TMDS clock = 1.0 x pixel clock (1:1) 766 30 bit mode: TMDS clock = 1.25 x pixel clock (5:4) 767 36 bit mode: TMDS clock = 1.5 x pixel clock (3:2) 768 48 bit mode: TMDS clock = 2 x pixel clock (2:1) 769 */ 770 if (signal_type != SIGNAL_TYPE_HDMI_TYPE_A) 771 return; 772 773 switch (colordepth) { 774 case COLOR_DEPTH_888: 775 REG_UPDATE(RESYNC_CNTL, 776 DCCG_DEEP_COLOR_CNTL1, 0); 777 break; 778 case COLOR_DEPTH_101010: 779 REG_UPDATE(RESYNC_CNTL, 780 DCCG_DEEP_COLOR_CNTL1, 1); 781 break; 782 case COLOR_DEPTH_121212: 783 REG_UPDATE(RESYNC_CNTL, 784 DCCG_DEEP_COLOR_CNTL1, 2); 785 break; 786 case COLOR_DEPTH_161616: 787 REG_UPDATE(RESYNC_CNTL, 788 DCCG_DEEP_COLOR_CNTL1, 3); 789 break; 790 default: 791 break; 792 } 793 } 794 795 static void dce112_program_pixel_clk_resync( 796 struct dce110_clk_src *clk_src, 797 enum signal_type signal_type, 798 enum dc_color_depth colordepth, 799 bool enable_ycbcr420) 800 { 801 uint32_t deep_color_cntl = 0; 802 uint32_t double_rate_enable = 0; 803 804 /* 805 24 bit mode: TMDS clock = 1.0 x pixel clock (1:1) 806 30 bit mode: TMDS clock = 1.25 x pixel clock (5:4) 807 36 bit mode: TMDS clock = 1.5 x pixel clock (3:2) 808 48 bit mode: TMDS clock = 2 x pixel clock (2:1) 809 */ 810 if (signal_type == SIGNAL_TYPE_HDMI_TYPE_A) { 811 double_rate_enable = enable_ycbcr420 ? 1 : 0; 812 813 switch (colordepth) { 814 case COLOR_DEPTH_888: 815 deep_color_cntl = 0; 816 break; 817 case COLOR_DEPTH_101010: 818 deep_color_cntl = 1; 819 break; 820 case COLOR_DEPTH_121212: 821 deep_color_cntl = 2; 822 break; 823 case COLOR_DEPTH_161616: 824 deep_color_cntl = 3; 825 break; 826 default: 827 break; 828 } 829 } 830 831 if (clk_src->cs_mask->PHYPLLA_PIXCLK_DOUBLE_RATE_ENABLE) 832 REG_UPDATE_2(PIXCLK_RESYNC_CNTL, 833 PHYPLLA_DCCG_DEEP_COLOR_CNTL, deep_color_cntl, 834 PHYPLLA_PIXCLK_DOUBLE_RATE_ENABLE, double_rate_enable); 835 else 836 REG_UPDATE(PIXCLK_RESYNC_CNTL, 837 PHYPLLA_DCCG_DEEP_COLOR_CNTL, deep_color_cntl); 838 839 } 840 841 static bool dce110_program_pix_clk( 842 struct clock_source *clock_source, 843 struct pixel_clk_params *pix_clk_params, 844 struct pll_settings *pll_settings) 845 { 846 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source); 847 struct bp_pixel_clock_parameters bp_pc_params = {0}; 848 849 /* First disable SS 850 * ATOMBIOS will enable by default SS on PLL for DP, 851 * do not disable it here 852 */ 853 if (clock_source->id != CLOCK_SOURCE_ID_EXTERNAL && 854 !dc_is_dp_signal(pix_clk_params->signal_type) && 855 clock_source->ctx->dce_version <= DCE_VERSION_11_0) 856 disable_spread_spectrum(clk_src); 857 858 /*ATOMBIOS expects pixel rate adjusted by deep color ratio)*/ 859 bp_pc_params.controller_id = pix_clk_params->controller_id; 860 bp_pc_params.pll_id = clock_source->id; 861 bp_pc_params.target_pixel_clock_100hz = pll_settings->actual_pix_clk_100hz; 862 bp_pc_params.encoder_object_id = pix_clk_params->encoder_object_id; 863 bp_pc_params.signal_type = pix_clk_params->signal_type; 864 865 bp_pc_params.reference_divider = pll_settings->reference_divider; 866 bp_pc_params.feedback_divider = pll_settings->feedback_divider; 867 bp_pc_params.fractional_feedback_divider = 868 pll_settings->fract_feedback_divider; 869 bp_pc_params.pixel_clock_post_divider = 870 pll_settings->pix_clk_post_divider; 871 bp_pc_params.flags.SET_EXTERNAL_REF_DIV_SRC = 872 pll_settings->use_external_clk; 873 874 if (clk_src->bios->funcs->set_pixel_clock( 875 clk_src->bios, &bp_pc_params) != BP_RESULT_OK) 876 return false; 877 /* Enable SS 878 * ATOMBIOS will enable by default SS for DP on PLL ( DP ID clock), 879 * based on HW display PLL team, SS control settings should be programmed 880 * during PLL Reset, but they do not have effect 881 * until SS_EN is asserted.*/ 882 if (clock_source->id != CLOCK_SOURCE_ID_EXTERNAL 883 && !dc_is_dp_signal(pix_clk_params->signal_type)) { 884 885 if (pix_clk_params->flags.ENABLE_SS) 886 if (!enable_spread_spectrum(clk_src, 887 pix_clk_params->signal_type, 888 pll_settings)) 889 return false; 890 891 /* Resync deep color DTO */ 892 dce110_program_pixel_clk_resync(clk_src, 893 pix_clk_params->signal_type, 894 pix_clk_params->color_depth); 895 } 896 897 return true; 898 } 899 900 static bool dce112_program_pix_clk( 901 struct clock_source *clock_source, 902 struct pixel_clk_params *pix_clk_params, 903 struct pll_settings *pll_settings) 904 { 905 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source); 906 struct bp_pixel_clock_parameters bp_pc_params = {0}; 907 908 #if defined(CONFIG_DRM_AMD_DC_DCN1_0) 909 if (IS_FPGA_MAXIMUS_DC(clock_source->ctx->dce_environment)) { 910 unsigned int inst = pix_clk_params->controller_id - CONTROLLER_ID_D0; 911 unsigned dp_dto_ref_100hz = 7000000; 912 unsigned clock_100hz = pll_settings->actual_pix_clk_100hz; 913 914 /* Set DTO values: phase = target clock, modulo = reference clock */ 915 REG_WRITE(PHASE[inst], clock_100hz); 916 REG_WRITE(MODULO[inst], dp_dto_ref_100hz); 917 918 /* Enable DTO */ 919 REG_UPDATE(PIXEL_RATE_CNTL[inst], DP_DTO0_ENABLE, 1); 920 return true; 921 } 922 #endif 923 /* First disable SS 924 * ATOMBIOS will enable by default SS on PLL for DP, 925 * do not disable it here 926 */ 927 if (clock_source->id != CLOCK_SOURCE_ID_EXTERNAL && 928 !dc_is_dp_signal(pix_clk_params->signal_type) && 929 clock_source->ctx->dce_version <= DCE_VERSION_11_0) 930 disable_spread_spectrum(clk_src); 931 932 /*ATOMBIOS expects pixel rate adjusted by deep color ratio)*/ 933 bp_pc_params.controller_id = pix_clk_params->controller_id; 934 bp_pc_params.pll_id = clock_source->id; 935 bp_pc_params.target_pixel_clock_100hz = pll_settings->actual_pix_clk_100hz; 936 bp_pc_params.encoder_object_id = pix_clk_params->encoder_object_id; 937 bp_pc_params.signal_type = pix_clk_params->signal_type; 938 939 if (clock_source->id != CLOCK_SOURCE_ID_DP_DTO) { 940 bp_pc_params.flags.SET_GENLOCK_REF_DIV_SRC = 941 pll_settings->use_external_clk; 942 bp_pc_params.flags.SET_XTALIN_REF_SRC = 943 !pll_settings->use_external_clk; 944 if (pix_clk_params->flags.SUPPORT_YCBCR420) { 945 bp_pc_params.flags.SUPPORT_YUV_420 = 1; 946 } 947 } 948 if (clk_src->bios->funcs->set_pixel_clock( 949 clk_src->bios, &bp_pc_params) != BP_RESULT_OK) 950 return false; 951 /* Resync deep color DTO */ 952 if (clock_source->id != CLOCK_SOURCE_ID_DP_DTO) 953 dce112_program_pixel_clk_resync(clk_src, 954 pix_clk_params->signal_type, 955 pix_clk_params->color_depth, 956 pix_clk_params->flags.SUPPORT_YCBCR420); 957 958 return true; 959 } 960 961 962 static bool dce110_clock_source_power_down( 963 struct clock_source *clk_src) 964 { 965 struct dce110_clk_src *dce110_clk_src = TO_DCE110_CLK_SRC(clk_src); 966 enum bp_result bp_result; 967 struct bp_pixel_clock_parameters bp_pixel_clock_params = {0}; 968 969 if (clk_src->dp_clk_src) 970 return true; 971 972 /* If Pixel Clock is 0 it means Power Down Pll*/ 973 bp_pixel_clock_params.controller_id = CONTROLLER_ID_UNDEFINED; 974 bp_pixel_clock_params.pll_id = clk_src->id; 975 bp_pixel_clock_params.flags.FORCE_PROGRAMMING_OF_PLL = 1; 976 977 /*Call ASICControl to process ATOMBIOS Exec table*/ 978 bp_result = dce110_clk_src->bios->funcs->set_pixel_clock( 979 dce110_clk_src->bios, 980 &bp_pixel_clock_params); 981 982 return bp_result == BP_RESULT_OK; 983 } 984 985 static bool get_pixel_clk_frequency_100hz( 986 const struct clock_source *clock_source, 987 unsigned int inst, 988 unsigned int *pixel_clk_khz) 989 { 990 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source); 991 unsigned int clock_hz = 0; 992 993 if (clock_source->id == CLOCK_SOURCE_ID_DP_DTO) { 994 clock_hz = REG_READ(PHASE[inst]); 995 996 /* NOTE: There is agreement with VBIOS here that MODULO is 997 * programmed equal to DPREFCLK, in which case PHASE will be 998 * equivalent to pixel clock. 999 */ 1000 *pixel_clk_khz = clock_hz / 100; 1001 return true; 1002 } 1003 1004 return false; 1005 } 1006 1007 #if defined(CONFIG_DRM_AMD_DC_DCN2_0) 1008 1009 /* this table is use to find *1.001 and /1.001 pixel rates from non-precise pixel rate */ 1010 struct pixel_rate_range_table_entry { 1011 unsigned int range_min_khz; 1012 unsigned int range_max_khz; 1013 unsigned int target_pixel_rate_khz; 1014 unsigned short mult_factor; 1015 unsigned short div_factor; 1016 }; 1017 1018 static const struct pixel_rate_range_table_entry video_optimized_pixel_rates[] = { 1019 // /1.001 rates 1020 {25170, 25180, 25200, 1000, 1001}, //25.2MHz -> 25.17 1021 {59340, 59350, 59400, 1000, 1001}, //59.4Mhz -> 59.340 1022 {74170, 74180, 74250, 1000, 1001}, //74.25Mhz -> 74.1758 1023 {125870, 125880, 126000, 1000, 1001}, //126Mhz -> 125.87 1024 {148350, 148360, 148500, 1000, 1001}, //148.5Mhz -> 148.3516 1025 {167830, 167840, 168000, 1000, 1001}, //168Mhz -> 167.83 1026 {222520, 222530, 222750, 1000, 1001}, //222.75Mhz -> 222.527 1027 {257140, 257150, 257400, 1000, 1001}, //257.4Mhz -> 257.1429 1028 {296700, 296710, 297000, 1000, 1001}, //297Mhz -> 296.7033 1029 {342850, 342860, 343200, 1000, 1001}, //343.2Mhz -> 342.857 1030 {395600, 395610, 396000, 1000, 1001}, //396Mhz -> 395.6 1031 {409090, 409100, 409500, 1000, 1001}, //409.5Mhz -> 409.091 1032 {445050, 445060, 445500, 1000, 1001}, //445.5Mhz -> 445.055 1033 {467530, 467540, 468000, 1000, 1001}, //468Mhz -> 467.5325 1034 {519230, 519240, 519750, 1000, 1001}, //519.75Mhz -> 519.231 1035 {525970, 525980, 526500, 1000, 1001}, //526.5Mhz -> 525.974 1036 {545450, 545460, 546000, 1000, 1001}, //546Mhz -> 545.455 1037 {593400, 593410, 594000, 1000, 1001}, //594Mhz -> 593.4066 1038 {623370, 623380, 624000, 1000, 1001}, //624Mhz -> 623.377 1039 {692300, 692310, 693000, 1000, 1001}, //693Mhz -> 692.308 1040 {701290, 701300, 702000, 1000, 1001}, //702Mhz -> 701.2987 1041 {791200, 791210, 792000, 1000, 1001}, //792Mhz -> 791.209 1042 {890100, 890110, 891000, 1000, 1001}, //891Mhz -> 890.1099 1043 {1186810, 1186820, 1188000, 1000, 1001},//1188Mhz -> 1186.8131 1044 1045 // *1.001 rates 1046 {27020, 27030, 27000, 1001, 1000}, //27Mhz 1047 {54050, 54060, 54000, 1001, 1000}, //54Mhz 1048 {108100, 108110, 108000, 1001, 1000},//108Mhz 1049 }; 1050 1051 static bool dcn20_program_pix_clk( 1052 struct clock_source *clock_source, 1053 struct pixel_clk_params *pix_clk_params, 1054 struct pll_settings *pll_settings) 1055 { 1056 dce112_program_pix_clk(clock_source, pix_clk_params, pll_settings); 1057 1058 return true; 1059 } 1060 1061 static const struct clock_source_funcs dcn20_clk_src_funcs = { 1062 .cs_power_down = dce110_clock_source_power_down, 1063 .program_pix_clk = dcn20_program_pix_clk, 1064 .get_pix_clk_dividers = dce112_get_pix_clk_dividers, 1065 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz 1066 }; 1067 #endif 1068 1069 /*****************************************/ 1070 /* Constructor */ 1071 /*****************************************/ 1072 1073 static const struct clock_source_funcs dce112_clk_src_funcs = { 1074 .cs_power_down = dce110_clock_source_power_down, 1075 .program_pix_clk = dce112_program_pix_clk, 1076 .get_pix_clk_dividers = dce112_get_pix_clk_dividers, 1077 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz 1078 }; 1079 static const struct clock_source_funcs dce110_clk_src_funcs = { 1080 .cs_power_down = dce110_clock_source_power_down, 1081 .program_pix_clk = dce110_program_pix_clk, 1082 .get_pix_clk_dividers = dce110_get_pix_clk_dividers, 1083 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz 1084 }; 1085 1086 1087 static void get_ss_info_from_atombios( 1088 struct dce110_clk_src *clk_src, 1089 enum as_signal_type as_signal, 1090 struct spread_spectrum_data *spread_spectrum_data[], 1091 uint32_t *ss_entries_num) 1092 { 1093 enum bp_result bp_result = BP_RESULT_FAILURE; 1094 struct spread_spectrum_info *ss_info; 1095 struct spread_spectrum_data *ss_data; 1096 struct spread_spectrum_info *ss_info_cur; 1097 struct spread_spectrum_data *ss_data_cur; 1098 uint32_t i; 1099 DC_LOGGER_INIT(); 1100 if (ss_entries_num == NULL) { 1101 DC_LOG_SYNC( 1102 "Invalid entry !!!\n"); 1103 return; 1104 } 1105 if (spread_spectrum_data == NULL) { 1106 DC_LOG_SYNC( 1107 "Invalid array pointer!!!\n"); 1108 return; 1109 } 1110 1111 spread_spectrum_data[0] = NULL; 1112 *ss_entries_num = 0; 1113 1114 *ss_entries_num = clk_src->bios->funcs->get_ss_entry_number( 1115 clk_src->bios, 1116 as_signal); 1117 1118 if (*ss_entries_num == 0) 1119 return; 1120 1121 ss_info = kcalloc(*ss_entries_num, 1122 sizeof(struct spread_spectrum_info), 1123 GFP_KERNEL); 1124 ss_info_cur = ss_info; 1125 if (ss_info == NULL) 1126 return; 1127 1128 ss_data = kcalloc(*ss_entries_num, 1129 sizeof(struct spread_spectrum_data), 1130 GFP_KERNEL); 1131 if (ss_data == NULL) 1132 goto out_free_info; 1133 1134 for (i = 0, ss_info_cur = ss_info; 1135 i < (*ss_entries_num); 1136 ++i, ++ss_info_cur) { 1137 1138 bp_result = clk_src->bios->funcs->get_spread_spectrum_info( 1139 clk_src->bios, 1140 as_signal, 1141 i, 1142 ss_info_cur); 1143 1144 if (bp_result != BP_RESULT_OK) 1145 goto out_free_data; 1146 } 1147 1148 for (i = 0, ss_info_cur = ss_info, ss_data_cur = ss_data; 1149 i < (*ss_entries_num); 1150 ++i, ++ss_info_cur, ++ss_data_cur) { 1151 1152 if (ss_info_cur->type.STEP_AND_DELAY_INFO != false) { 1153 DC_LOG_SYNC( 1154 "Invalid ATOMBIOS SS Table!!!\n"); 1155 goto out_free_data; 1156 } 1157 1158 /* for HDMI check SS percentage, 1159 * if it is > 6 (0.06%), the ATOMBIOS table info is invalid*/ 1160 if (as_signal == AS_SIGNAL_TYPE_HDMI 1161 && ss_info_cur->spread_spectrum_percentage > 6){ 1162 /* invalid input, do nothing */ 1163 DC_LOG_SYNC( 1164 "Invalid SS percentage "); 1165 DC_LOG_SYNC( 1166 "for HDMI in ATOMBIOS info Table!!!\n"); 1167 continue; 1168 } 1169 if (ss_info_cur->spread_percentage_divider == 1000) { 1170 /* Keep previous precision from ATOMBIOS for these 1171 * in case new precision set by ATOMBIOS for these 1172 * (otherwise all code in DCE specific classes 1173 * for all previous ASICs would need 1174 * to be updated for SS calculations, 1175 * Audio SS compensation and DP DTO SS compensation 1176 * which assumes fixed SS percentage Divider = 100)*/ 1177 ss_info_cur->spread_spectrum_percentage /= 10; 1178 ss_info_cur->spread_percentage_divider = 100; 1179 } 1180 1181 ss_data_cur->freq_range_khz = ss_info_cur->target_clock_range; 1182 ss_data_cur->percentage = 1183 ss_info_cur->spread_spectrum_percentage; 1184 ss_data_cur->percentage_divider = 1185 ss_info_cur->spread_percentage_divider; 1186 ss_data_cur->modulation_freq_hz = 1187 ss_info_cur->spread_spectrum_range; 1188 1189 if (ss_info_cur->type.CENTER_MODE) 1190 ss_data_cur->flags.CENTER_SPREAD = 1; 1191 1192 if (ss_info_cur->type.EXTERNAL) 1193 ss_data_cur->flags.EXTERNAL_SS = 1; 1194 1195 } 1196 1197 *spread_spectrum_data = ss_data; 1198 kfree(ss_info); 1199 return; 1200 1201 out_free_data: 1202 kfree(ss_data); 1203 *ss_entries_num = 0; 1204 out_free_info: 1205 kfree(ss_info); 1206 } 1207 1208 static void ss_info_from_atombios_create( 1209 struct dce110_clk_src *clk_src) 1210 { 1211 get_ss_info_from_atombios( 1212 clk_src, 1213 AS_SIGNAL_TYPE_DISPLAY_PORT, 1214 &clk_src->dp_ss_params, 1215 &clk_src->dp_ss_params_cnt); 1216 get_ss_info_from_atombios( 1217 clk_src, 1218 AS_SIGNAL_TYPE_HDMI, 1219 &clk_src->hdmi_ss_params, 1220 &clk_src->hdmi_ss_params_cnt); 1221 get_ss_info_from_atombios( 1222 clk_src, 1223 AS_SIGNAL_TYPE_DVI, 1224 &clk_src->dvi_ss_params, 1225 &clk_src->dvi_ss_params_cnt); 1226 get_ss_info_from_atombios( 1227 clk_src, 1228 AS_SIGNAL_TYPE_LVDS, 1229 &clk_src->lvds_ss_params, 1230 &clk_src->lvds_ss_params_cnt); 1231 } 1232 1233 static bool calc_pll_max_vco_construct( 1234 struct calc_pll_clock_source *calc_pll_cs, 1235 struct calc_pll_clock_source_init_data *init_data) 1236 { 1237 uint32_t i; 1238 struct dc_firmware_info *fw_info; 1239 if (calc_pll_cs == NULL || 1240 init_data == NULL || 1241 init_data->bp == NULL) 1242 return false; 1243 1244 if (!init_data->bp->fw_info_valid) 1245 return false; 1246 1247 fw_info = &init_data->bp->fw_info; 1248 calc_pll_cs->ctx = init_data->ctx; 1249 calc_pll_cs->ref_freq_khz = fw_info->pll_info.crystal_frequency; 1250 calc_pll_cs->min_vco_khz = 1251 fw_info->pll_info.min_output_pxl_clk_pll_frequency; 1252 calc_pll_cs->max_vco_khz = 1253 fw_info->pll_info.max_output_pxl_clk_pll_frequency; 1254 1255 if (init_data->max_override_input_pxl_clk_pll_freq_khz != 0) 1256 calc_pll_cs->max_pll_input_freq_khz = 1257 init_data->max_override_input_pxl_clk_pll_freq_khz; 1258 else 1259 calc_pll_cs->max_pll_input_freq_khz = 1260 fw_info->pll_info.max_input_pxl_clk_pll_frequency; 1261 1262 if (init_data->min_override_input_pxl_clk_pll_freq_khz != 0) 1263 calc_pll_cs->min_pll_input_freq_khz = 1264 init_data->min_override_input_pxl_clk_pll_freq_khz; 1265 else 1266 calc_pll_cs->min_pll_input_freq_khz = 1267 fw_info->pll_info.min_input_pxl_clk_pll_frequency; 1268 1269 calc_pll_cs->min_pix_clock_pll_post_divider = 1270 init_data->min_pix_clk_pll_post_divider; 1271 calc_pll_cs->max_pix_clock_pll_post_divider = 1272 init_data->max_pix_clk_pll_post_divider; 1273 calc_pll_cs->min_pll_ref_divider = 1274 init_data->min_pll_ref_divider; 1275 calc_pll_cs->max_pll_ref_divider = 1276 init_data->max_pll_ref_divider; 1277 1278 if (init_data->num_fract_fb_divider_decimal_point == 0 || 1279 init_data->num_fract_fb_divider_decimal_point_precision > 1280 init_data->num_fract_fb_divider_decimal_point) { 1281 DC_LOG_ERROR( 1282 "The dec point num or precision is incorrect!"); 1283 return false; 1284 } 1285 if (init_data->num_fract_fb_divider_decimal_point_precision == 0) { 1286 DC_LOG_ERROR( 1287 "Incorrect fract feedback divider precision num!"); 1288 return false; 1289 } 1290 1291 calc_pll_cs->fract_fb_divider_decimal_points_num = 1292 init_data->num_fract_fb_divider_decimal_point; 1293 calc_pll_cs->fract_fb_divider_precision = 1294 init_data->num_fract_fb_divider_decimal_point_precision; 1295 calc_pll_cs->fract_fb_divider_factor = 1; 1296 for (i = 0; i < calc_pll_cs->fract_fb_divider_decimal_points_num; ++i) 1297 calc_pll_cs->fract_fb_divider_factor *= 10; 1298 1299 calc_pll_cs->fract_fb_divider_precision_factor = 1; 1300 for ( 1301 i = 0; 1302 i < (calc_pll_cs->fract_fb_divider_decimal_points_num - 1303 calc_pll_cs->fract_fb_divider_precision); 1304 ++i) 1305 calc_pll_cs->fract_fb_divider_precision_factor *= 10; 1306 1307 return true; 1308 } 1309 1310 bool dce110_clk_src_construct( 1311 struct dce110_clk_src *clk_src, 1312 struct dc_context *ctx, 1313 struct dc_bios *bios, 1314 enum clock_source_id id, 1315 const struct dce110_clk_src_regs *regs, 1316 const struct dce110_clk_src_shift *cs_shift, 1317 const struct dce110_clk_src_mask *cs_mask) 1318 { 1319 struct calc_pll_clock_source_init_data calc_pll_cs_init_data_hdmi; 1320 struct calc_pll_clock_source_init_data calc_pll_cs_init_data; 1321 1322 clk_src->base.ctx = ctx; 1323 clk_src->bios = bios; 1324 clk_src->base.id = id; 1325 clk_src->base.funcs = &dce110_clk_src_funcs; 1326 1327 clk_src->regs = regs; 1328 clk_src->cs_shift = cs_shift; 1329 clk_src->cs_mask = cs_mask; 1330 1331 if (!clk_src->bios->fw_info_valid) { 1332 ASSERT_CRITICAL(false); 1333 goto unexpected_failure; 1334 } 1335 1336 clk_src->ext_clk_khz = clk_src->bios->fw_info.external_clock_source_frequency_for_dp; 1337 1338 /* structure normally used with PLL ranges from ATOMBIOS; DS on by default */ 1339 calc_pll_cs_init_data.bp = bios; 1340 calc_pll_cs_init_data.min_pix_clk_pll_post_divider = 1; 1341 calc_pll_cs_init_data.max_pix_clk_pll_post_divider = 1342 clk_src->cs_mask->PLL_POST_DIV_PIXCLK; 1343 calc_pll_cs_init_data.min_pll_ref_divider = 1; 1344 calc_pll_cs_init_data.max_pll_ref_divider = clk_src->cs_mask->PLL_REF_DIV; 1345 /* when 0 use minInputPxlClkPLLFrequencyInKHz from firmwareInfo*/ 1346 calc_pll_cs_init_data.min_override_input_pxl_clk_pll_freq_khz = 0; 1347 /* when 0 use maxInputPxlClkPLLFrequencyInKHz from firmwareInfo*/ 1348 calc_pll_cs_init_data.max_override_input_pxl_clk_pll_freq_khz = 0; 1349 /*numberOfFractFBDividerDecimalPoints*/ 1350 calc_pll_cs_init_data.num_fract_fb_divider_decimal_point = 1351 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM; 1352 /*number of decimal point to round off for fractional feedback divider value*/ 1353 calc_pll_cs_init_data.num_fract_fb_divider_decimal_point_precision = 1354 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM; 1355 calc_pll_cs_init_data.ctx = ctx; 1356 1357 /*structure for HDMI, no SS or SS% <= 0.06% for 27 MHz Ref clock */ 1358 calc_pll_cs_init_data_hdmi.bp = bios; 1359 calc_pll_cs_init_data_hdmi.min_pix_clk_pll_post_divider = 1; 1360 calc_pll_cs_init_data_hdmi.max_pix_clk_pll_post_divider = 1361 clk_src->cs_mask->PLL_POST_DIV_PIXCLK; 1362 calc_pll_cs_init_data_hdmi.min_pll_ref_divider = 1; 1363 calc_pll_cs_init_data_hdmi.max_pll_ref_divider = clk_src->cs_mask->PLL_REF_DIV; 1364 /* when 0 use minInputPxlClkPLLFrequencyInKHz from firmwareInfo*/ 1365 calc_pll_cs_init_data_hdmi.min_override_input_pxl_clk_pll_freq_khz = 13500; 1366 /* when 0 use maxInputPxlClkPLLFrequencyInKHz from firmwareInfo*/ 1367 calc_pll_cs_init_data_hdmi.max_override_input_pxl_clk_pll_freq_khz = 27000; 1368 /*numberOfFractFBDividerDecimalPoints*/ 1369 calc_pll_cs_init_data_hdmi.num_fract_fb_divider_decimal_point = 1370 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM; 1371 /*number of decimal point to round off for fractional feedback divider value*/ 1372 calc_pll_cs_init_data_hdmi.num_fract_fb_divider_decimal_point_precision = 1373 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM; 1374 calc_pll_cs_init_data_hdmi.ctx = ctx; 1375 1376 clk_src->ref_freq_khz = clk_src->bios->fw_info.pll_info.crystal_frequency; 1377 1378 if (clk_src->base.id == CLOCK_SOURCE_ID_EXTERNAL) 1379 return true; 1380 1381 /* PLL only from here on */ 1382 ss_info_from_atombios_create(clk_src); 1383 1384 if (!calc_pll_max_vco_construct( 1385 &clk_src->calc_pll, 1386 &calc_pll_cs_init_data)) { 1387 ASSERT_CRITICAL(false); 1388 goto unexpected_failure; 1389 } 1390 1391 1392 calc_pll_cs_init_data_hdmi. 1393 min_override_input_pxl_clk_pll_freq_khz = clk_src->ref_freq_khz/2; 1394 calc_pll_cs_init_data_hdmi. 1395 max_override_input_pxl_clk_pll_freq_khz = clk_src->ref_freq_khz; 1396 1397 1398 if (!calc_pll_max_vco_construct( 1399 &clk_src->calc_pll_hdmi, &calc_pll_cs_init_data_hdmi)) { 1400 ASSERT_CRITICAL(false); 1401 goto unexpected_failure; 1402 } 1403 1404 return true; 1405 1406 unexpected_failure: 1407 return false; 1408 } 1409 1410 bool dce112_clk_src_construct( 1411 struct dce110_clk_src *clk_src, 1412 struct dc_context *ctx, 1413 struct dc_bios *bios, 1414 enum clock_source_id id, 1415 const struct dce110_clk_src_regs *regs, 1416 const struct dce110_clk_src_shift *cs_shift, 1417 const struct dce110_clk_src_mask *cs_mask) 1418 { 1419 clk_src->base.ctx = ctx; 1420 clk_src->bios = bios; 1421 clk_src->base.id = id; 1422 clk_src->base.funcs = &dce112_clk_src_funcs; 1423 1424 clk_src->regs = regs; 1425 clk_src->cs_shift = cs_shift; 1426 clk_src->cs_mask = cs_mask; 1427 1428 if (!clk_src->bios->fw_info_valid) { 1429 ASSERT_CRITICAL(false); 1430 return false; 1431 } 1432 1433 clk_src->ext_clk_khz = clk_src->bios->fw_info.external_clock_source_frequency_for_dp; 1434 1435 return true; 1436 } 1437 1438 #if defined(CONFIG_DRM_AMD_DC_DCN2_0) 1439 bool dcn20_clk_src_construct( 1440 struct dce110_clk_src *clk_src, 1441 struct dc_context *ctx, 1442 struct dc_bios *bios, 1443 enum clock_source_id id, 1444 const struct dce110_clk_src_regs *regs, 1445 const struct dce110_clk_src_shift *cs_shift, 1446 const struct dce110_clk_src_mask *cs_mask) 1447 { 1448 bool ret = dce112_clk_src_construct(clk_src, ctx, bios, id, regs, cs_shift, cs_mask); 1449 1450 clk_src->base.funcs = &dcn20_clk_src_funcs; 1451 1452 return ret; 1453 } 1454 #endif 1455