1 /* 2 * Copyright 2011 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: Alex Deucher 23 */ 24 25 #include "drmP.h" 26 #include "radeon.h" 27 #include "rv6xxd.h" 28 #include "r600_dpm.h" 29 #include "rv6xx_dpm.h" 30 #include "atom.h" 31 #include <linux/seq_file.h> 32 33 static u32 rv6xx_scale_count_given_unit(struct radeon_device *rdev, 34 u32 unscaled_count, u32 unit); 35 36 static struct rv6xx_ps *rv6xx_get_ps(struct radeon_ps *rps) 37 { 38 struct rv6xx_ps *ps = rps->ps_priv; 39 40 return ps; 41 } 42 43 static struct rv6xx_power_info *rv6xx_get_pi(struct radeon_device *rdev) 44 { 45 struct rv6xx_power_info *pi = rdev->pm.dpm.priv; 46 47 return pi; 48 } 49 50 static void rv6xx_force_pcie_gen1(struct radeon_device *rdev) 51 { 52 u32 tmp; 53 int i; 54 55 tmp = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL); 56 tmp &= LC_GEN2_EN; 57 WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, tmp); 58 59 tmp = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL); 60 tmp |= LC_INITIATE_LINK_SPEED_CHANGE; 61 WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, tmp); 62 63 for (i = 0; i < rdev->usec_timeout; i++) { 64 if (!(RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL) & LC_CURRENT_DATA_RATE)) 65 break; 66 udelay(1); 67 } 68 69 tmp = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL); 70 tmp &= ~LC_INITIATE_LINK_SPEED_CHANGE; 71 WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, tmp); 72 } 73 74 static void rv6xx_enable_pcie_gen2_support(struct radeon_device *rdev) 75 { 76 u32 tmp; 77 78 tmp = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL); 79 80 if ((tmp & LC_OTHER_SIDE_EVER_SENT_GEN2) && 81 (tmp & LC_OTHER_SIDE_SUPPORTS_GEN2)) { 82 tmp |= LC_GEN2_EN; 83 WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, tmp); 84 } 85 } 86 87 static void rv6xx_enable_bif_dynamic_pcie_gen2(struct radeon_device *rdev, 88 bool enable) 89 { 90 u32 tmp; 91 92 tmp = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL) & ~LC_HW_VOLTAGE_IF_CONTROL_MASK; 93 if (enable) 94 tmp |= LC_HW_VOLTAGE_IF_CONTROL(1); 95 else 96 tmp |= LC_HW_VOLTAGE_IF_CONTROL(0); 97 WREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL, tmp); 98 } 99 100 static void rv6xx_enable_l0s(struct radeon_device *rdev) 101 { 102 u32 tmp; 103 104 tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL) & ~LC_L0S_INACTIVITY_MASK; 105 tmp |= LC_L0S_INACTIVITY(3); 106 WREG32_PCIE_PORT(PCIE_LC_CNTL, tmp); 107 } 108 109 static void rv6xx_enable_l1(struct radeon_device *rdev) 110 { 111 u32 tmp; 112 113 tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL); 114 tmp &= ~LC_L1_INACTIVITY_MASK; 115 tmp |= LC_L1_INACTIVITY(4); 116 tmp &= ~LC_PMI_TO_L1_DIS; 117 tmp &= ~LC_ASPM_TO_L1_DIS; 118 WREG32_PCIE_PORT(PCIE_LC_CNTL, tmp); 119 } 120 121 static void rv6xx_enable_pll_sleep_in_l1(struct radeon_device *rdev) 122 { 123 u32 tmp; 124 125 tmp = RREG32_PCIE_PORT(PCIE_LC_CNTL) & ~LC_L1_INACTIVITY_MASK; 126 tmp |= LC_L1_INACTIVITY(8); 127 WREG32_PCIE_PORT(PCIE_LC_CNTL, tmp); 128 129 /* NOTE, this is a PCIE indirect reg, not PCIE PORT */ 130 tmp = RREG32_PCIE(PCIE_P_CNTL); 131 tmp |= P_PLL_PWRDN_IN_L1L23; 132 tmp &= ~P_PLL_BUF_PDNB; 133 tmp &= ~P_PLL_PDNB; 134 tmp |= P_ALLOW_PRX_FRONTEND_SHUTOFF; 135 WREG32_PCIE(PCIE_P_CNTL, tmp); 136 } 137 138 static int rv6xx_convert_clock_to_stepping(struct radeon_device *rdev, 139 u32 clock, struct rv6xx_sclk_stepping *step) 140 { 141 int ret; 142 struct atom_clock_dividers dividers; 143 144 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 145 clock, false, ÷rs); 146 if (ret) 147 return ret; 148 149 if (dividers.enable_post_div) 150 step->post_divider = 2 + (dividers.post_div & 0xF) + (dividers.post_div >> 4); 151 else 152 step->post_divider = 1; 153 154 step->vco_frequency = clock * step->post_divider; 155 156 return 0; 157 } 158 159 static void rv6xx_output_stepping(struct radeon_device *rdev, 160 u32 step_index, struct rv6xx_sclk_stepping *step) 161 { 162 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 163 u32 ref_clk = rdev->clock.spll.reference_freq; 164 u32 fb_divider; 165 u32 spll_step_count = rv6xx_scale_count_given_unit(rdev, 166 R600_SPLLSTEPTIME_DFLT * 167 pi->spll_ref_div, 168 R600_SPLLSTEPUNIT_DFLT); 169 170 r600_engine_clock_entry_enable(rdev, step_index, true); 171 r600_engine_clock_entry_enable_pulse_skipping(rdev, step_index, false); 172 173 if (step->post_divider == 1) 174 r600_engine_clock_entry_enable_post_divider(rdev, step_index, false); 175 else { 176 u32 lo_len = (step->post_divider - 2) / 2; 177 u32 hi_len = step->post_divider - 2 - lo_len; 178 179 r600_engine_clock_entry_enable_post_divider(rdev, step_index, true); 180 r600_engine_clock_entry_set_post_divider(rdev, step_index, (hi_len << 4) | lo_len); 181 } 182 183 fb_divider = ((step->vco_frequency * pi->spll_ref_div) / ref_clk) >> 184 pi->fb_div_scale; 185 186 r600_engine_clock_entry_set_reference_divider(rdev, step_index, 187 pi->spll_ref_div - 1); 188 r600_engine_clock_entry_set_feedback_divider(rdev, step_index, fb_divider); 189 r600_engine_clock_entry_set_step_time(rdev, step_index, spll_step_count); 190 191 } 192 193 static struct rv6xx_sclk_stepping rv6xx_next_vco_step(struct radeon_device *rdev, 194 struct rv6xx_sclk_stepping *cur, 195 bool increasing_vco, u32 step_size) 196 { 197 struct rv6xx_sclk_stepping next; 198 199 next.post_divider = cur->post_divider; 200 201 if (increasing_vco) 202 next.vco_frequency = (cur->vco_frequency * (100 + step_size)) / 100; 203 else 204 next.vco_frequency = (cur->vco_frequency * 100 + 99 + step_size) / (100 + step_size); 205 206 return next; 207 } 208 209 static bool rv6xx_can_step_post_div(struct radeon_device *rdev, 210 struct rv6xx_sclk_stepping *cur, 211 struct rv6xx_sclk_stepping *target) 212 { 213 return (cur->post_divider > target->post_divider) && 214 ((cur->vco_frequency * target->post_divider) <= 215 (target->vco_frequency * (cur->post_divider - 1))); 216 } 217 218 static struct rv6xx_sclk_stepping rv6xx_next_post_div_step(struct radeon_device *rdev, 219 struct rv6xx_sclk_stepping *cur, 220 struct rv6xx_sclk_stepping *target) 221 { 222 struct rv6xx_sclk_stepping next = *cur; 223 224 while (rv6xx_can_step_post_div(rdev, &next, target)) 225 next.post_divider--; 226 227 return next; 228 } 229 230 static bool rv6xx_reached_stepping_target(struct radeon_device *rdev, 231 struct rv6xx_sclk_stepping *cur, 232 struct rv6xx_sclk_stepping *target, 233 bool increasing_vco) 234 { 235 return (increasing_vco && (cur->vco_frequency >= target->vco_frequency)) || 236 (!increasing_vco && (cur->vco_frequency <= target->vco_frequency)); 237 } 238 239 static void rv6xx_generate_steps(struct radeon_device *rdev, 240 u32 low, u32 high, 241 u32 start_index, u8 *end_index) 242 { 243 struct rv6xx_sclk_stepping cur; 244 struct rv6xx_sclk_stepping target; 245 bool increasing_vco; 246 u32 step_index = start_index; 247 248 rv6xx_convert_clock_to_stepping(rdev, low, &cur); 249 rv6xx_convert_clock_to_stepping(rdev, high, &target); 250 251 rv6xx_output_stepping(rdev, step_index++, &cur); 252 253 increasing_vco = (target.vco_frequency >= cur.vco_frequency); 254 255 if (target.post_divider > cur.post_divider) 256 cur.post_divider = target.post_divider; 257 258 while (1) { 259 struct rv6xx_sclk_stepping next; 260 261 if (rv6xx_can_step_post_div(rdev, &cur, &target)) 262 next = rv6xx_next_post_div_step(rdev, &cur, &target); 263 else 264 next = rv6xx_next_vco_step(rdev, &cur, increasing_vco, R600_VCOSTEPPCT_DFLT); 265 266 if (rv6xx_reached_stepping_target(rdev, &next, &target, increasing_vco)) { 267 struct rv6xx_sclk_stepping tiny = 268 rv6xx_next_vco_step(rdev, &target, !increasing_vco, R600_ENDINGVCOSTEPPCT_DFLT); 269 tiny.post_divider = next.post_divider; 270 271 if (!rv6xx_reached_stepping_target(rdev, &tiny, &cur, !increasing_vco)) 272 rv6xx_output_stepping(rdev, step_index++, &tiny); 273 274 if ((next.post_divider != target.post_divider) && 275 (next.vco_frequency != target.vco_frequency)) { 276 struct rv6xx_sclk_stepping final_vco; 277 278 final_vco.vco_frequency = target.vco_frequency; 279 final_vco.post_divider = next.post_divider; 280 281 rv6xx_output_stepping(rdev, step_index++, &final_vco); 282 } 283 284 rv6xx_output_stepping(rdev, step_index++, &target); 285 break; 286 } else 287 rv6xx_output_stepping(rdev, step_index++, &next); 288 289 cur = next; 290 } 291 292 *end_index = (u8)step_index - 1; 293 294 } 295 296 static void rv6xx_generate_single_step(struct radeon_device *rdev, 297 u32 clock, u32 index) 298 { 299 struct rv6xx_sclk_stepping step; 300 301 rv6xx_convert_clock_to_stepping(rdev, clock, &step); 302 rv6xx_output_stepping(rdev, index, &step); 303 } 304 305 static void rv6xx_invalidate_intermediate_steps_range(struct radeon_device *rdev, 306 u32 start_index, u32 end_index) 307 { 308 u32 step_index; 309 310 for (step_index = start_index + 1; step_index < end_index; step_index++) 311 r600_engine_clock_entry_enable(rdev, step_index, false); 312 } 313 314 static void rv6xx_set_engine_spread_spectrum_clk_s(struct radeon_device *rdev, 315 u32 index, u32 clk_s) 316 { 317 WREG32_P(CG_SPLL_SPREAD_SPECTRUM_LOW + (index * 4), 318 CLKS(clk_s), ~CLKS_MASK); 319 } 320 321 static void rv6xx_set_engine_spread_spectrum_clk_v(struct radeon_device *rdev, 322 u32 index, u32 clk_v) 323 { 324 WREG32_P(CG_SPLL_SPREAD_SPECTRUM_LOW + (index * 4), 325 CLKV(clk_v), ~CLKV_MASK); 326 } 327 328 static void rv6xx_enable_engine_spread_spectrum(struct radeon_device *rdev, 329 u32 index, bool enable) 330 { 331 if (enable) 332 WREG32_P(CG_SPLL_SPREAD_SPECTRUM_LOW + (index * 4), 333 SSEN, ~SSEN); 334 else 335 WREG32_P(CG_SPLL_SPREAD_SPECTRUM_LOW + (index * 4), 336 0, ~SSEN); 337 } 338 339 static void rv6xx_set_memory_spread_spectrum_clk_s(struct radeon_device *rdev, 340 u32 clk_s) 341 { 342 WREG32_P(CG_MPLL_SPREAD_SPECTRUM, CLKS(clk_s), ~CLKS_MASK); 343 } 344 345 static void rv6xx_set_memory_spread_spectrum_clk_v(struct radeon_device *rdev, 346 u32 clk_v) 347 { 348 WREG32_P(CG_MPLL_SPREAD_SPECTRUM, CLKV(clk_v), ~CLKV_MASK); 349 } 350 351 static void rv6xx_enable_memory_spread_spectrum(struct radeon_device *rdev, 352 bool enable) 353 { 354 if (enable) 355 WREG32_P(CG_MPLL_SPREAD_SPECTRUM, SSEN, ~SSEN); 356 else 357 WREG32_P(CG_MPLL_SPREAD_SPECTRUM, 0, ~SSEN); 358 } 359 360 static void rv6xx_enable_dynamic_spread_spectrum(struct radeon_device *rdev, 361 bool enable) 362 { 363 if (enable) 364 WREG32_P(GENERAL_PWRMGT, DYN_SPREAD_SPECTRUM_EN, ~DYN_SPREAD_SPECTRUM_EN); 365 else 366 WREG32_P(GENERAL_PWRMGT, 0, ~DYN_SPREAD_SPECTRUM_EN); 367 } 368 369 static void rv6xx_memory_clock_entry_enable_post_divider(struct radeon_device *rdev, 370 u32 index, bool enable) 371 { 372 if (enable) 373 WREG32_P(MPLL_FREQ_LEVEL_0 + (index * 4), 374 LEVEL0_MPLL_DIV_EN, ~LEVEL0_MPLL_DIV_EN); 375 else 376 WREG32_P(MPLL_FREQ_LEVEL_0 + (index * 4), 0, ~LEVEL0_MPLL_DIV_EN); 377 } 378 379 static void rv6xx_memory_clock_entry_set_post_divider(struct radeon_device *rdev, 380 u32 index, u32 divider) 381 { 382 WREG32_P(MPLL_FREQ_LEVEL_0 + (index * 4), 383 LEVEL0_MPLL_POST_DIV(divider), ~LEVEL0_MPLL_POST_DIV_MASK); 384 } 385 386 static void rv6xx_memory_clock_entry_set_feedback_divider(struct radeon_device *rdev, 387 u32 index, u32 divider) 388 { 389 WREG32_P(MPLL_FREQ_LEVEL_0 + (index * 4), LEVEL0_MPLL_FB_DIV(divider), 390 ~LEVEL0_MPLL_FB_DIV_MASK); 391 } 392 393 static void rv6xx_memory_clock_entry_set_reference_divider(struct radeon_device *rdev, 394 u32 index, u32 divider) 395 { 396 WREG32_P(MPLL_FREQ_LEVEL_0 + (index * 4), 397 LEVEL0_MPLL_REF_DIV(divider), ~LEVEL0_MPLL_REF_DIV_MASK); 398 } 399 400 static void rv6xx_vid_response_set_brt(struct radeon_device *rdev, u32 rt) 401 { 402 WREG32_P(VID_RT, BRT(rt), ~BRT_MASK); 403 } 404 405 static void rv6xx_enable_engine_feedback_and_reference_sync(struct radeon_device *rdev) 406 { 407 WREG32_P(SPLL_CNTL_MODE, SPLL_DIV_SYNC, ~SPLL_DIV_SYNC); 408 } 409 410 static u32 rv6xx_clocks_per_unit(u32 unit) 411 { 412 u32 tmp = 1 << (2 * unit); 413 414 return tmp; 415 } 416 417 static u32 rv6xx_scale_count_given_unit(struct radeon_device *rdev, 418 u32 unscaled_count, u32 unit) 419 { 420 u32 count_per_unit = rv6xx_clocks_per_unit(unit); 421 422 return (unscaled_count + count_per_unit - 1) / count_per_unit; 423 } 424 425 static u32 rv6xx_compute_count_for_delay(struct radeon_device *rdev, 426 u32 delay_us, u32 unit) 427 { 428 u32 ref_clk = rdev->clock.spll.reference_freq; 429 430 return rv6xx_scale_count_given_unit(rdev, delay_us * (ref_clk / 100), unit); 431 } 432 433 static void rv6xx_calculate_engine_speed_stepping_parameters(struct radeon_device *rdev, 434 struct rv6xx_ps *state) 435 { 436 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 437 438 pi->hw.sclks[R600_POWER_LEVEL_LOW] = 439 state->low.sclk; 440 pi->hw.sclks[R600_POWER_LEVEL_MEDIUM] = 441 state->medium.sclk; 442 pi->hw.sclks[R600_POWER_LEVEL_HIGH] = 443 state->high.sclk; 444 445 pi->hw.low_sclk_index = R600_POWER_LEVEL_LOW; 446 pi->hw.medium_sclk_index = R600_POWER_LEVEL_MEDIUM; 447 pi->hw.high_sclk_index = R600_POWER_LEVEL_HIGH; 448 } 449 450 static void rv6xx_calculate_memory_clock_stepping_parameters(struct radeon_device *rdev, 451 struct rv6xx_ps *state) 452 { 453 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 454 455 pi->hw.mclks[R600_POWER_LEVEL_CTXSW] = 456 state->high.mclk; 457 pi->hw.mclks[R600_POWER_LEVEL_HIGH] = 458 state->high.mclk; 459 pi->hw.mclks[R600_POWER_LEVEL_MEDIUM] = 460 state->medium.mclk; 461 pi->hw.mclks[R600_POWER_LEVEL_LOW] = 462 state->low.mclk; 463 464 pi->hw.high_mclk_index = R600_POWER_LEVEL_HIGH; 465 466 if (state->high.mclk == state->medium.mclk) 467 pi->hw.medium_mclk_index = 468 pi->hw.high_mclk_index; 469 else 470 pi->hw.medium_mclk_index = R600_POWER_LEVEL_MEDIUM; 471 472 473 if (state->medium.mclk == state->low.mclk) 474 pi->hw.low_mclk_index = 475 pi->hw.medium_mclk_index; 476 else 477 pi->hw.low_mclk_index = R600_POWER_LEVEL_LOW; 478 } 479 480 static void rv6xx_calculate_voltage_stepping_parameters(struct radeon_device *rdev, 481 struct rv6xx_ps *state) 482 { 483 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 484 485 pi->hw.vddc[R600_POWER_LEVEL_CTXSW] = state->high.vddc; 486 pi->hw.vddc[R600_POWER_LEVEL_HIGH] = state->high.vddc; 487 pi->hw.vddc[R600_POWER_LEVEL_MEDIUM] = state->medium.vddc; 488 pi->hw.vddc[R600_POWER_LEVEL_LOW] = state->low.vddc; 489 490 pi->hw.backbias[R600_POWER_LEVEL_CTXSW] = 491 (state->high.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE) ? true : false; 492 pi->hw.backbias[R600_POWER_LEVEL_HIGH] = 493 (state->high.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE) ? true : false; 494 pi->hw.backbias[R600_POWER_LEVEL_MEDIUM] = 495 (state->medium.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE) ? true : false; 496 pi->hw.backbias[R600_POWER_LEVEL_LOW] = 497 (state->low.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE) ? true : false; 498 499 pi->hw.pcie_gen2[R600_POWER_LEVEL_HIGH] = 500 (state->high.flags & ATOM_PPLIB_R600_FLAGS_PCIEGEN2) ? true : false; 501 pi->hw.pcie_gen2[R600_POWER_LEVEL_MEDIUM] = 502 (state->medium.flags & ATOM_PPLIB_R600_FLAGS_PCIEGEN2) ? true : false; 503 pi->hw.pcie_gen2[R600_POWER_LEVEL_LOW] = 504 (state->low.flags & ATOM_PPLIB_R600_FLAGS_PCIEGEN2) ? true : false; 505 506 pi->hw.high_vddc_index = R600_POWER_LEVEL_HIGH; 507 508 if ((state->high.vddc == state->medium.vddc) && 509 ((state->high.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE) == 510 (state->medium.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE))) 511 pi->hw.medium_vddc_index = 512 pi->hw.high_vddc_index; 513 else 514 pi->hw.medium_vddc_index = R600_POWER_LEVEL_MEDIUM; 515 516 if ((state->medium.vddc == state->low.vddc) && 517 ((state->medium.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE) == 518 (state->low.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE))) 519 pi->hw.low_vddc_index = 520 pi->hw.medium_vddc_index; 521 else 522 pi->hw.medium_vddc_index = R600_POWER_LEVEL_LOW; 523 } 524 525 static inline u32 rv6xx_calculate_vco_frequency(u32 ref_clock, 526 struct atom_clock_dividers *dividers, 527 u32 fb_divider_scale) 528 { 529 return ref_clock * ((dividers->fb_div & ~1) << fb_divider_scale) / 530 (dividers->ref_div + 1); 531 } 532 533 static inline u32 rv6xx_calculate_spread_spectrum_clk_v(u32 vco_freq, u32 ref_freq, 534 u32 ss_rate, u32 ss_percent, 535 u32 fb_divider_scale) 536 { 537 u32 fb_divider = vco_freq / ref_freq; 538 539 return (ss_percent * ss_rate * 4 * (fb_divider * fb_divider) / 540 (5375 * ((vco_freq * 10) / (4096 >> fb_divider_scale)))); 541 } 542 543 static inline u32 rv6xx_calculate_spread_spectrum_clk_s(u32 ss_rate, u32 ref_freq) 544 { 545 return (((ref_freq * 10) / (ss_rate * 2)) - 1) / 4; 546 } 547 548 static void rv6xx_program_engine_spread_spectrum(struct radeon_device *rdev, 549 u32 clock, enum r600_power_level level) 550 { 551 u32 ref_clk = rdev->clock.spll.reference_freq; 552 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 553 struct atom_clock_dividers dividers; 554 struct radeon_atom_ss ss; 555 u32 vco_freq, clk_v, clk_s; 556 557 rv6xx_enable_engine_spread_spectrum(rdev, level, false); 558 559 if (clock && pi->sclk_ss) { 560 if (radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, clock, false, ÷rs) == 0) { 561 vco_freq = rv6xx_calculate_vco_frequency(ref_clk, ÷rs, 562 pi->fb_div_scale); 563 564 if (radeon_atombios_get_asic_ss_info(rdev, &ss, 565 ASIC_INTERNAL_ENGINE_SS, vco_freq)) { 566 clk_v = rv6xx_calculate_spread_spectrum_clk_v(vco_freq, 567 (ref_clk / (dividers.ref_div + 1)), 568 ss.rate, 569 ss.percentage, 570 pi->fb_div_scale); 571 572 clk_s = rv6xx_calculate_spread_spectrum_clk_s(ss.rate, 573 (ref_clk / (dividers.ref_div + 1))); 574 575 rv6xx_set_engine_spread_spectrum_clk_v(rdev, level, clk_v); 576 rv6xx_set_engine_spread_spectrum_clk_s(rdev, level, clk_s); 577 rv6xx_enable_engine_spread_spectrum(rdev, level, true); 578 } 579 } 580 } 581 } 582 583 static void rv6xx_program_sclk_spread_spectrum_parameters_except_lowest_entry(struct radeon_device *rdev) 584 { 585 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 586 587 rv6xx_program_engine_spread_spectrum(rdev, 588 pi->hw.sclks[R600_POWER_LEVEL_HIGH], 589 R600_POWER_LEVEL_HIGH); 590 591 rv6xx_program_engine_spread_spectrum(rdev, 592 pi->hw.sclks[R600_POWER_LEVEL_MEDIUM], 593 R600_POWER_LEVEL_MEDIUM); 594 595 } 596 597 static int rv6xx_program_mclk_stepping_entry(struct radeon_device *rdev, 598 u32 entry, u32 clock) 599 { 600 struct atom_clock_dividers dividers; 601 602 if (radeon_atom_get_clock_dividers(rdev, COMPUTE_MEMORY_PLL_PARAM, clock, false, ÷rs)) 603 return -EINVAL; 604 605 606 rv6xx_memory_clock_entry_set_reference_divider(rdev, entry, dividers.ref_div); 607 rv6xx_memory_clock_entry_set_feedback_divider(rdev, entry, dividers.fb_div); 608 rv6xx_memory_clock_entry_set_post_divider(rdev, entry, dividers.post_div); 609 610 if (dividers.enable_post_div) 611 rv6xx_memory_clock_entry_enable_post_divider(rdev, entry, true); 612 else 613 rv6xx_memory_clock_entry_enable_post_divider(rdev, entry, false); 614 615 return 0; 616 } 617 618 static void rv6xx_program_mclk_stepping_parameters_except_lowest_entry(struct radeon_device *rdev) 619 { 620 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 621 int i; 622 623 for (i = 1; i < R600_PM_NUMBER_OF_MCLKS; i++) { 624 if (pi->hw.mclks[i]) 625 rv6xx_program_mclk_stepping_entry(rdev, i, 626 pi->hw.mclks[i]); 627 } 628 } 629 630 static void rv6xx_find_memory_clock_with_highest_vco(struct radeon_device *rdev, 631 u32 requested_memory_clock, 632 u32 ref_clk, 633 struct atom_clock_dividers *dividers, 634 u32 *vco_freq) 635 { 636 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 637 struct atom_clock_dividers req_dividers; 638 u32 vco_freq_temp; 639 640 if (radeon_atom_get_clock_dividers(rdev, COMPUTE_MEMORY_PLL_PARAM, 641 requested_memory_clock, false, &req_dividers) == 0) { 642 vco_freq_temp = rv6xx_calculate_vco_frequency(ref_clk, &req_dividers, 643 pi->fb_div_scale); 644 645 if (vco_freq_temp > *vco_freq) { 646 *dividers = req_dividers; 647 *vco_freq = vco_freq_temp; 648 } 649 } 650 } 651 652 static void rv6xx_program_mclk_spread_spectrum_parameters(struct radeon_device *rdev) 653 { 654 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 655 u32 ref_clk = rdev->clock.mpll.reference_freq; 656 struct atom_clock_dividers dividers; 657 struct radeon_atom_ss ss; 658 u32 vco_freq = 0, clk_v, clk_s; 659 660 rv6xx_enable_memory_spread_spectrum(rdev, false); 661 662 if (pi->mclk_ss) { 663 rv6xx_find_memory_clock_with_highest_vco(rdev, 664 pi->hw.mclks[pi->hw.high_mclk_index], 665 ref_clk, 666 ÷rs, 667 &vco_freq); 668 669 rv6xx_find_memory_clock_with_highest_vco(rdev, 670 pi->hw.mclks[pi->hw.medium_mclk_index], 671 ref_clk, 672 ÷rs, 673 &vco_freq); 674 675 rv6xx_find_memory_clock_with_highest_vco(rdev, 676 pi->hw.mclks[pi->hw.low_mclk_index], 677 ref_clk, 678 ÷rs, 679 &vco_freq); 680 681 if (vco_freq) { 682 if (radeon_atombios_get_asic_ss_info(rdev, &ss, 683 ASIC_INTERNAL_MEMORY_SS, vco_freq)) { 684 clk_v = rv6xx_calculate_spread_spectrum_clk_v(vco_freq, 685 (ref_clk / (dividers.ref_div + 1)), 686 ss.rate, 687 ss.percentage, 688 pi->fb_div_scale); 689 690 clk_s = rv6xx_calculate_spread_spectrum_clk_s(ss.rate, 691 (ref_clk / (dividers.ref_div + 1))); 692 693 rv6xx_set_memory_spread_spectrum_clk_v(rdev, clk_v); 694 rv6xx_set_memory_spread_spectrum_clk_s(rdev, clk_s); 695 rv6xx_enable_memory_spread_spectrum(rdev, true); 696 } 697 } 698 } 699 } 700 701 static int rv6xx_program_voltage_stepping_entry(struct radeon_device *rdev, 702 u32 entry, u16 voltage) 703 { 704 u32 mask, set_pins; 705 int ret; 706 707 ret = radeon_atom_get_voltage_gpio_settings(rdev, voltage, 708 SET_VOLTAGE_TYPE_ASIC_VDDC, 709 &set_pins, &mask); 710 if (ret) 711 return ret; 712 713 r600_voltage_control_program_voltages(rdev, entry, set_pins); 714 715 return 0; 716 } 717 718 static void rv6xx_program_voltage_stepping_parameters_except_lowest_entry(struct radeon_device *rdev) 719 { 720 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 721 int i; 722 723 for (i = 1; i < R600_PM_NUMBER_OF_VOLTAGE_LEVELS; i++) 724 rv6xx_program_voltage_stepping_entry(rdev, i, 725 pi->hw.vddc[i]); 726 727 } 728 729 static void rv6xx_program_backbias_stepping_parameters_except_lowest_entry(struct radeon_device *rdev) 730 { 731 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 732 733 if (pi->hw.backbias[1]) 734 WREG32_P(VID_UPPER_GPIO_CNTL, MEDIUM_BACKBIAS_VALUE, ~MEDIUM_BACKBIAS_VALUE); 735 else 736 WREG32_P(VID_UPPER_GPIO_CNTL, 0, ~MEDIUM_BACKBIAS_VALUE); 737 738 if (pi->hw.backbias[2]) 739 WREG32_P(VID_UPPER_GPIO_CNTL, HIGH_BACKBIAS_VALUE, ~HIGH_BACKBIAS_VALUE); 740 else 741 WREG32_P(VID_UPPER_GPIO_CNTL, 0, ~HIGH_BACKBIAS_VALUE); 742 } 743 744 static void rv6xx_program_sclk_spread_spectrum_parameters_lowest_entry(struct radeon_device *rdev) 745 { 746 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 747 748 rv6xx_program_engine_spread_spectrum(rdev, 749 pi->hw.sclks[R600_POWER_LEVEL_LOW], 750 R600_POWER_LEVEL_LOW); 751 } 752 753 static void rv6xx_program_mclk_stepping_parameters_lowest_entry(struct radeon_device *rdev) 754 { 755 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 756 757 if (pi->hw.mclks[0]) 758 rv6xx_program_mclk_stepping_entry(rdev, 0, 759 pi->hw.mclks[0]); 760 } 761 762 static void rv6xx_program_voltage_stepping_parameters_lowest_entry(struct radeon_device *rdev) 763 { 764 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 765 766 rv6xx_program_voltage_stepping_entry(rdev, 0, 767 pi->hw.vddc[0]); 768 769 } 770 771 static void rv6xx_program_backbias_stepping_parameters_lowest_entry(struct radeon_device *rdev) 772 { 773 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 774 775 if (pi->hw.backbias[0]) 776 WREG32_P(VID_UPPER_GPIO_CNTL, LOW_BACKBIAS_VALUE, ~LOW_BACKBIAS_VALUE); 777 else 778 WREG32_P(VID_UPPER_GPIO_CNTL, 0, ~LOW_BACKBIAS_VALUE); 779 } 780 781 static u32 calculate_memory_refresh_rate(struct radeon_device *rdev, 782 u32 engine_clock) 783 { 784 u32 dram_rows, dram_refresh_rate; 785 u32 tmp; 786 787 tmp = (RREG32(RAMCFG) & NOOFROWS_MASK) >> NOOFROWS_SHIFT; 788 dram_rows = 1 << (tmp + 10); 789 dram_refresh_rate = 1 << ((RREG32(MC_SEQ_RESERVE_M) & 0x3) + 3); 790 791 return ((engine_clock * 10) * dram_refresh_rate / dram_rows - 32) / 64; 792 } 793 794 static void rv6xx_program_memory_timing_parameters(struct radeon_device *rdev) 795 { 796 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 797 u32 sqm_ratio; 798 u32 arb_refresh_rate; 799 u32 high_clock; 800 801 if (pi->hw.sclks[R600_POWER_LEVEL_HIGH] < 802 (pi->hw.sclks[R600_POWER_LEVEL_LOW] * 0xFF / 0x40)) 803 high_clock = pi->hw.sclks[R600_POWER_LEVEL_HIGH]; 804 else 805 high_clock = 806 pi->hw.sclks[R600_POWER_LEVEL_LOW] * 0xFF / 0x40; 807 808 radeon_atom_set_engine_dram_timings(rdev, high_clock, 0); 809 810 sqm_ratio = (STATE0(64 * high_clock / pi->hw.sclks[R600_POWER_LEVEL_LOW]) | 811 STATE1(64 * high_clock / pi->hw.sclks[R600_POWER_LEVEL_MEDIUM]) | 812 STATE2(64 * high_clock / pi->hw.sclks[R600_POWER_LEVEL_HIGH]) | 813 STATE3(64 * high_clock / pi->hw.sclks[R600_POWER_LEVEL_HIGH])); 814 WREG32(SQM_RATIO, sqm_ratio); 815 816 arb_refresh_rate = 817 (POWERMODE0(calculate_memory_refresh_rate(rdev, 818 pi->hw.sclks[R600_POWER_LEVEL_LOW])) | 819 POWERMODE1(calculate_memory_refresh_rate(rdev, 820 pi->hw.sclks[R600_POWER_LEVEL_MEDIUM])) | 821 POWERMODE2(calculate_memory_refresh_rate(rdev, 822 pi->hw.sclks[R600_POWER_LEVEL_HIGH])) | 823 POWERMODE3(calculate_memory_refresh_rate(rdev, 824 pi->hw.sclks[R600_POWER_LEVEL_HIGH]))); 825 WREG32(ARB_RFSH_RATE, arb_refresh_rate); 826 } 827 828 static void rv6xx_program_mpll_timing_parameters(struct radeon_device *rdev) 829 { 830 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 831 832 r600_set_mpll_lock_time(rdev, R600_MPLLLOCKTIME_DFLT * 833 pi->mpll_ref_div); 834 r600_set_mpll_reset_time(rdev, R600_MPLLRESETTIME_DFLT); 835 } 836 837 static void rv6xx_program_bsp(struct radeon_device *rdev) 838 { 839 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 840 u32 ref_clk = rdev->clock.spll.reference_freq; 841 842 r600_calculate_u_and_p(R600_ASI_DFLT, 843 ref_clk, 16, 844 &pi->bsp, 845 &pi->bsu); 846 847 r600_set_bsp(rdev, pi->bsu, pi->bsp); 848 } 849 850 static void rv6xx_program_at(struct radeon_device *rdev) 851 { 852 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 853 854 r600_set_at(rdev, 855 (pi->hw.rp[0] * pi->bsp) / 200, 856 (pi->hw.rp[1] * pi->bsp) / 200, 857 (pi->hw.lp[2] * pi->bsp) / 200, 858 (pi->hw.lp[1] * pi->bsp) / 200); 859 } 860 861 static void rv6xx_program_git(struct radeon_device *rdev) 862 { 863 r600_set_git(rdev, R600_GICST_DFLT); 864 } 865 866 static void rv6xx_program_tp(struct radeon_device *rdev) 867 { 868 int i; 869 870 for (i = 0; i < R600_PM_NUMBER_OF_TC; i++) 871 r600_set_tc(rdev, i, r600_utc[i], r600_dtc[i]); 872 873 r600_select_td(rdev, R600_TD_DFLT); 874 } 875 876 static void rv6xx_program_vc(struct radeon_device *rdev) 877 { 878 r600_set_vrc(rdev, R600_VRC_DFLT); 879 } 880 881 static void rv6xx_clear_vc(struct radeon_device *rdev) 882 { 883 r600_set_vrc(rdev, 0); 884 } 885 886 static void rv6xx_program_tpp(struct radeon_device *rdev) 887 { 888 r600_set_tpu(rdev, R600_TPU_DFLT); 889 r600_set_tpc(rdev, R600_TPC_DFLT); 890 } 891 892 static void rv6xx_program_sstp(struct radeon_device *rdev) 893 { 894 r600_set_sstu(rdev, R600_SSTU_DFLT); 895 r600_set_sst(rdev, R600_SST_DFLT); 896 } 897 898 static void rv6xx_program_fcp(struct radeon_device *rdev) 899 { 900 r600_set_fctu(rdev, R600_FCTU_DFLT); 901 r600_set_fct(rdev, R600_FCT_DFLT); 902 } 903 904 static void rv6xx_program_vddc3d_parameters(struct radeon_device *rdev) 905 { 906 r600_set_vddc3d_oorsu(rdev, R600_VDDC3DOORSU_DFLT); 907 r600_set_vddc3d_oorphc(rdev, R600_VDDC3DOORPHC_DFLT); 908 r600_set_vddc3d_oorsdc(rdev, R600_VDDC3DOORSDC_DFLT); 909 r600_set_ctxcgtt3d_rphc(rdev, R600_CTXCGTT3DRPHC_DFLT); 910 r600_set_ctxcgtt3d_rsdc(rdev, R600_CTXCGTT3DRSDC_DFLT); 911 } 912 913 static void rv6xx_program_voltage_timing_parameters(struct radeon_device *rdev) 914 { 915 u32 rt; 916 917 r600_vid_rt_set_vru(rdev, R600_VRU_DFLT); 918 919 r600_vid_rt_set_vrt(rdev, 920 rv6xx_compute_count_for_delay(rdev, 921 rdev->pm.dpm.voltage_response_time, 922 R600_VRU_DFLT)); 923 924 rt = rv6xx_compute_count_for_delay(rdev, 925 rdev->pm.dpm.backbias_response_time, 926 R600_VRU_DFLT); 927 928 rv6xx_vid_response_set_brt(rdev, (rt + 0x1F) >> 5); 929 } 930 931 static void rv6xx_program_engine_speed_parameters(struct radeon_device *rdev) 932 { 933 r600_vid_rt_set_ssu(rdev, R600_SPLLSTEPUNIT_DFLT); 934 rv6xx_enable_engine_feedback_and_reference_sync(rdev); 935 } 936 937 static u64 rv6xx_get_master_voltage_mask(struct radeon_device *rdev) 938 { 939 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 940 u64 master_mask = 0; 941 int i; 942 943 for (i = 0; i < R600_PM_NUMBER_OF_VOLTAGE_LEVELS; i++) { 944 u32 tmp_mask, tmp_set_pins; 945 int ret; 946 947 ret = radeon_atom_get_voltage_gpio_settings(rdev, 948 pi->hw.vddc[i], 949 SET_VOLTAGE_TYPE_ASIC_VDDC, 950 &tmp_set_pins, &tmp_mask); 951 952 if (ret == 0) 953 master_mask |= tmp_mask; 954 } 955 956 return master_mask; 957 } 958 959 static void rv6xx_program_voltage_gpio_pins(struct radeon_device *rdev) 960 { 961 r600_voltage_control_enable_pins(rdev, 962 rv6xx_get_master_voltage_mask(rdev)); 963 } 964 965 static void rv6xx_enable_static_voltage_control(struct radeon_device *rdev, 966 struct radeon_ps *new_ps, 967 bool enable) 968 { 969 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 970 971 if (enable) 972 radeon_atom_set_voltage(rdev, 973 new_state->low.vddc, 974 SET_VOLTAGE_TYPE_ASIC_VDDC); 975 else 976 r600_voltage_control_deactivate_static_control(rdev, 977 rv6xx_get_master_voltage_mask(rdev)); 978 } 979 980 static void rv6xx_enable_display_gap(struct radeon_device *rdev, bool enable) 981 { 982 if (enable) { 983 u32 tmp = (DISP1_GAP(R600_PM_DISPLAY_GAP_VBLANK_OR_WM) | 984 DISP2_GAP(R600_PM_DISPLAY_GAP_VBLANK_OR_WM) | 985 DISP1_GAP_MCHG(R600_PM_DISPLAY_GAP_IGNORE) | 986 DISP2_GAP_MCHG(R600_PM_DISPLAY_GAP_IGNORE) | 987 VBI_TIMER_COUNT(0x3FFF) | 988 VBI_TIMER_UNIT(7)); 989 WREG32(CG_DISPLAY_GAP_CNTL, tmp); 990 991 WREG32_P(MCLK_PWRMGT_CNTL, USE_DISPLAY_GAP, ~USE_DISPLAY_GAP); 992 } else 993 WREG32_P(MCLK_PWRMGT_CNTL, 0, ~USE_DISPLAY_GAP); 994 } 995 996 static void rv6xx_program_power_level_enter_state(struct radeon_device *rdev) 997 { 998 r600_power_level_set_enter_index(rdev, R600_POWER_LEVEL_MEDIUM); 999 } 1000 1001 static void rv6xx_calculate_t(u32 l_f, u32 h_f, int h, 1002 int d_l, int d_r, u8 *l, u8 *r) 1003 { 1004 int a_n, a_d, h_r, l_r; 1005 1006 h_r = d_l; 1007 l_r = 100 - d_r; 1008 1009 a_n = (int)h_f * d_l + (int)l_f * (h - d_r); 1010 a_d = (int)l_f * l_r + (int)h_f * h_r; 1011 1012 if (a_d != 0) { 1013 *l = d_l - h_r * a_n / a_d; 1014 *r = d_r + l_r * a_n / a_d; 1015 } 1016 } 1017 1018 static void rv6xx_calculate_ap(struct radeon_device *rdev, 1019 struct rv6xx_ps *state) 1020 { 1021 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1022 1023 pi->hw.lp[0] = 0; 1024 pi->hw.rp[R600_PM_NUMBER_OF_ACTIVITY_LEVELS - 1] 1025 = 100; 1026 1027 rv6xx_calculate_t(state->low.sclk, 1028 state->medium.sclk, 1029 R600_AH_DFLT, 1030 R600_LMP_DFLT, 1031 R600_RLP_DFLT, 1032 &pi->hw.lp[1], 1033 &pi->hw.rp[0]); 1034 1035 rv6xx_calculate_t(state->medium.sclk, 1036 state->high.sclk, 1037 R600_AH_DFLT, 1038 R600_LHP_DFLT, 1039 R600_RMP_DFLT, 1040 &pi->hw.lp[2], 1041 &pi->hw.rp[1]); 1042 1043 } 1044 1045 static void rv6xx_calculate_stepping_parameters(struct radeon_device *rdev, 1046 struct radeon_ps *new_ps) 1047 { 1048 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1049 1050 rv6xx_calculate_engine_speed_stepping_parameters(rdev, new_state); 1051 rv6xx_calculate_memory_clock_stepping_parameters(rdev, new_state); 1052 rv6xx_calculate_voltage_stepping_parameters(rdev, new_state); 1053 rv6xx_calculate_ap(rdev, new_state); 1054 } 1055 1056 static void rv6xx_program_stepping_parameters_except_lowest_entry(struct radeon_device *rdev) 1057 { 1058 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1059 1060 rv6xx_program_mclk_stepping_parameters_except_lowest_entry(rdev); 1061 if (pi->voltage_control) 1062 rv6xx_program_voltage_stepping_parameters_except_lowest_entry(rdev); 1063 rv6xx_program_backbias_stepping_parameters_except_lowest_entry(rdev); 1064 rv6xx_program_sclk_spread_spectrum_parameters_except_lowest_entry(rdev); 1065 rv6xx_program_mclk_spread_spectrum_parameters(rdev); 1066 rv6xx_program_memory_timing_parameters(rdev); 1067 } 1068 1069 static void rv6xx_program_stepping_parameters_lowest_entry(struct radeon_device *rdev) 1070 { 1071 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1072 1073 rv6xx_program_mclk_stepping_parameters_lowest_entry(rdev); 1074 if (pi->voltage_control) 1075 rv6xx_program_voltage_stepping_parameters_lowest_entry(rdev); 1076 rv6xx_program_backbias_stepping_parameters_lowest_entry(rdev); 1077 rv6xx_program_sclk_spread_spectrum_parameters_lowest_entry(rdev); 1078 } 1079 1080 static void rv6xx_program_power_level_low(struct radeon_device *rdev) 1081 { 1082 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1083 1084 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_LOW, 1085 pi->hw.low_vddc_index); 1086 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_LOW, 1087 pi->hw.low_mclk_index); 1088 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_LOW, 1089 pi->hw.low_sclk_index); 1090 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_LOW, 1091 R600_DISPLAY_WATERMARK_LOW); 1092 r600_power_level_set_pcie_gen2(rdev, R600_POWER_LEVEL_LOW, 1093 pi->hw.pcie_gen2[R600_POWER_LEVEL_LOW]); 1094 } 1095 1096 static void rv6xx_program_power_level_low_to_lowest_state(struct radeon_device *rdev) 1097 { 1098 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1099 1100 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_LOW, 0); 1101 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_LOW, 0); 1102 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_LOW, 0); 1103 1104 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_LOW, 1105 R600_DISPLAY_WATERMARK_LOW); 1106 1107 r600_power_level_set_pcie_gen2(rdev, R600_POWER_LEVEL_LOW, 1108 pi->hw.pcie_gen2[R600_POWER_LEVEL_LOW]); 1109 1110 } 1111 1112 static void rv6xx_program_power_level_medium(struct radeon_device *rdev) 1113 { 1114 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1115 1116 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_MEDIUM, 1117 pi->hw.medium_vddc_index); 1118 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 1119 pi->hw.medium_mclk_index); 1120 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 1121 pi->hw.medium_sclk_index); 1122 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_MEDIUM, 1123 R600_DISPLAY_WATERMARK_LOW); 1124 r600_power_level_set_pcie_gen2(rdev, R600_POWER_LEVEL_MEDIUM, 1125 pi->hw.pcie_gen2[R600_POWER_LEVEL_MEDIUM]); 1126 } 1127 1128 static void rv6xx_program_power_level_medium_for_transition(struct radeon_device *rdev) 1129 { 1130 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1131 1132 rv6xx_program_mclk_stepping_entry(rdev, 1133 R600_POWER_LEVEL_CTXSW, 1134 pi->hw.mclks[pi->hw.low_mclk_index]); 1135 1136 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_MEDIUM, 1); 1137 1138 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 1139 R600_POWER_LEVEL_CTXSW); 1140 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 1141 pi->hw.medium_sclk_index); 1142 1143 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_MEDIUM, 1144 R600_DISPLAY_WATERMARK_LOW); 1145 1146 rv6xx_enable_engine_spread_spectrum(rdev, R600_POWER_LEVEL_MEDIUM, false); 1147 1148 r600_power_level_set_pcie_gen2(rdev, R600_POWER_LEVEL_MEDIUM, 1149 pi->hw.pcie_gen2[R600_POWER_LEVEL_LOW]); 1150 } 1151 1152 static void rv6xx_program_power_level_high(struct radeon_device *rdev) 1153 { 1154 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1155 1156 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_HIGH, 1157 pi->hw.high_vddc_index); 1158 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_HIGH, 1159 pi->hw.high_mclk_index); 1160 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_HIGH, 1161 pi->hw.high_sclk_index); 1162 1163 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_HIGH, 1164 R600_DISPLAY_WATERMARK_HIGH); 1165 1166 r600_power_level_set_pcie_gen2(rdev, R600_POWER_LEVEL_HIGH, 1167 pi->hw.pcie_gen2[R600_POWER_LEVEL_HIGH]); 1168 } 1169 1170 static void rv6xx_enable_backbias(struct radeon_device *rdev, bool enable) 1171 { 1172 if (enable) 1173 WREG32_P(GENERAL_PWRMGT, BACKBIAS_PAD_EN | BACKBIAS_DPM_CNTL, 1174 ~(BACKBIAS_PAD_EN | BACKBIAS_DPM_CNTL)); 1175 else 1176 WREG32_P(GENERAL_PWRMGT, 0, 1177 ~(BACKBIAS_VALUE | BACKBIAS_PAD_EN | BACKBIAS_DPM_CNTL)); 1178 } 1179 1180 static void rv6xx_program_display_gap(struct radeon_device *rdev) 1181 { 1182 u32 tmp = RREG32(CG_DISPLAY_GAP_CNTL); 1183 1184 tmp &= ~(DISP1_GAP_MCHG_MASK | DISP2_GAP_MCHG_MASK); 1185 if (rdev->pm.dpm.new_active_crtcs & 1) { 1186 tmp |= DISP1_GAP_MCHG(R600_PM_DISPLAY_GAP_VBLANK); 1187 tmp |= DISP2_GAP_MCHG(R600_PM_DISPLAY_GAP_IGNORE); 1188 } else if (rdev->pm.dpm.new_active_crtcs & 2) { 1189 tmp |= DISP1_GAP_MCHG(R600_PM_DISPLAY_GAP_IGNORE); 1190 tmp |= DISP2_GAP_MCHG(R600_PM_DISPLAY_GAP_VBLANK); 1191 } else { 1192 tmp |= DISP1_GAP_MCHG(R600_PM_DISPLAY_GAP_IGNORE); 1193 tmp |= DISP2_GAP_MCHG(R600_PM_DISPLAY_GAP_IGNORE); 1194 } 1195 WREG32(CG_DISPLAY_GAP_CNTL, tmp); 1196 } 1197 1198 static void rv6xx_set_sw_voltage_to_safe(struct radeon_device *rdev, 1199 struct radeon_ps *new_ps, 1200 struct radeon_ps *old_ps) 1201 { 1202 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1203 struct rv6xx_ps *old_state = rv6xx_get_ps(old_ps); 1204 u16 safe_voltage; 1205 1206 safe_voltage = (new_state->low.vddc >= old_state->low.vddc) ? 1207 new_state->low.vddc : old_state->low.vddc; 1208 1209 rv6xx_program_voltage_stepping_entry(rdev, R600_POWER_LEVEL_CTXSW, 1210 safe_voltage); 1211 1212 WREG32_P(GENERAL_PWRMGT, SW_GPIO_INDEX(R600_POWER_LEVEL_CTXSW), 1213 ~SW_GPIO_INDEX_MASK); 1214 } 1215 1216 static void rv6xx_set_sw_voltage_to_low(struct radeon_device *rdev, 1217 struct radeon_ps *old_ps) 1218 { 1219 struct rv6xx_ps *old_state = rv6xx_get_ps(old_ps); 1220 1221 rv6xx_program_voltage_stepping_entry(rdev, R600_POWER_LEVEL_CTXSW, 1222 old_state->low.vddc); 1223 1224 WREG32_P(GENERAL_PWRMGT, SW_GPIO_INDEX(R600_POWER_LEVEL_CTXSW), 1225 ~SW_GPIO_INDEX_MASK); 1226 } 1227 1228 static void rv6xx_set_safe_backbias(struct radeon_device *rdev, 1229 struct radeon_ps *new_ps, 1230 struct radeon_ps *old_ps) 1231 { 1232 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1233 struct rv6xx_ps *old_state = rv6xx_get_ps(old_ps); 1234 1235 if ((new_state->low.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE) && 1236 (old_state->low.flags & ATOM_PPLIB_R600_FLAGS_BACKBIASENABLE)) 1237 WREG32_P(GENERAL_PWRMGT, BACKBIAS_VALUE, ~BACKBIAS_VALUE); 1238 else 1239 WREG32_P(GENERAL_PWRMGT, 0, ~BACKBIAS_VALUE); 1240 } 1241 1242 static void rv6xx_set_safe_pcie_gen2(struct radeon_device *rdev, 1243 struct radeon_ps *new_ps, 1244 struct radeon_ps *old_ps) 1245 { 1246 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1247 struct rv6xx_ps *old_state = rv6xx_get_ps(old_ps); 1248 1249 if ((new_state->low.flags & ATOM_PPLIB_R600_FLAGS_PCIEGEN2) != 1250 (old_state->low.flags & ATOM_PPLIB_R600_FLAGS_PCIEGEN2)) 1251 rv6xx_force_pcie_gen1(rdev); 1252 } 1253 1254 static void rv6xx_enable_dynamic_voltage_control(struct radeon_device *rdev, 1255 bool enable) 1256 { 1257 if (enable) 1258 WREG32_P(GENERAL_PWRMGT, VOLT_PWRMGT_EN, ~VOLT_PWRMGT_EN); 1259 else 1260 WREG32_P(GENERAL_PWRMGT, 0, ~VOLT_PWRMGT_EN); 1261 } 1262 1263 static void rv6xx_enable_dynamic_backbias_control(struct radeon_device *rdev, 1264 bool enable) 1265 { 1266 if (enable) 1267 WREG32_P(GENERAL_PWRMGT, BACKBIAS_DPM_CNTL, ~BACKBIAS_DPM_CNTL); 1268 else 1269 WREG32_P(GENERAL_PWRMGT, 0, ~BACKBIAS_DPM_CNTL); 1270 } 1271 1272 static int rv6xx_step_sw_voltage(struct radeon_device *rdev, 1273 u16 initial_voltage, 1274 u16 target_voltage) 1275 { 1276 u16 current_voltage; 1277 u16 true_target_voltage; 1278 u16 voltage_step; 1279 int signed_voltage_step; 1280 1281 if ((radeon_atom_get_voltage_step(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 1282 &voltage_step)) || 1283 (radeon_atom_round_to_true_voltage(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 1284 initial_voltage, ¤t_voltage)) || 1285 (radeon_atom_round_to_true_voltage(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 1286 target_voltage, &true_target_voltage))) 1287 return -EINVAL; 1288 1289 if (true_target_voltage < current_voltage) 1290 signed_voltage_step = -(int)voltage_step; 1291 else 1292 signed_voltage_step = voltage_step; 1293 1294 while (current_voltage != true_target_voltage) { 1295 current_voltage += signed_voltage_step; 1296 rv6xx_program_voltage_stepping_entry(rdev, R600_POWER_LEVEL_CTXSW, 1297 current_voltage); 1298 msleep((rdev->pm.dpm.voltage_response_time + 999) / 1000); 1299 } 1300 1301 return 0; 1302 } 1303 1304 static int rv6xx_step_voltage_if_increasing(struct radeon_device *rdev, 1305 struct radeon_ps *new_ps, 1306 struct radeon_ps *old_ps) 1307 { 1308 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1309 struct rv6xx_ps *old_state = rv6xx_get_ps(old_ps); 1310 1311 if (new_state->low.vddc > old_state->low.vddc) 1312 return rv6xx_step_sw_voltage(rdev, 1313 old_state->low.vddc, 1314 new_state->low.vddc); 1315 1316 return 0; 1317 } 1318 1319 static int rv6xx_step_voltage_if_decreasing(struct radeon_device *rdev, 1320 struct radeon_ps *new_ps, 1321 struct radeon_ps *old_ps) 1322 { 1323 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1324 struct rv6xx_ps *old_state = rv6xx_get_ps(old_ps); 1325 1326 if (new_state->low.vddc < old_state->low.vddc) 1327 return rv6xx_step_sw_voltage(rdev, 1328 old_state->low.vddc, 1329 new_state->low.vddc); 1330 else 1331 return 0; 1332 } 1333 1334 static void rv6xx_enable_high(struct radeon_device *rdev) 1335 { 1336 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1337 1338 if ((pi->restricted_levels < 1) || 1339 (pi->restricted_levels == 3)) 1340 r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, true); 1341 } 1342 1343 static void rv6xx_enable_medium(struct radeon_device *rdev) 1344 { 1345 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1346 1347 if (pi->restricted_levels < 2) 1348 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, true); 1349 } 1350 1351 static void rv6xx_set_dpm_event_sources(struct radeon_device *rdev, u32 sources) 1352 { 1353 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1354 bool want_thermal_protection; 1355 enum radeon_dpm_event_src dpm_event_src; 1356 1357 switch (sources) { 1358 case 0: 1359 default: 1360 want_thermal_protection = false; 1361 break; 1362 case (1 << RADEON_DPM_AUTO_THROTTLE_SRC_THERMAL): 1363 want_thermal_protection = true; 1364 dpm_event_src = RADEON_DPM_EVENT_SRC_DIGITAL; 1365 break; 1366 1367 case (1 << RADEON_DPM_AUTO_THROTTLE_SRC_EXTERNAL): 1368 want_thermal_protection = true; 1369 dpm_event_src = RADEON_DPM_EVENT_SRC_EXTERNAL; 1370 break; 1371 1372 case ((1 << RADEON_DPM_AUTO_THROTTLE_SRC_EXTERNAL) | 1373 (1 << RADEON_DPM_AUTO_THROTTLE_SRC_THERMAL)): 1374 want_thermal_protection = true; 1375 dpm_event_src = RADEON_DPM_EVENT_SRC_DIGIAL_OR_EXTERNAL; 1376 break; 1377 } 1378 1379 if (want_thermal_protection) { 1380 WREG32_P(CG_THERMAL_CTRL, DPM_EVENT_SRC(dpm_event_src), ~DPM_EVENT_SRC_MASK); 1381 if (pi->thermal_protection) 1382 WREG32_P(GENERAL_PWRMGT, 0, ~THERMAL_PROTECTION_DIS); 1383 } else { 1384 WREG32_P(GENERAL_PWRMGT, THERMAL_PROTECTION_DIS, ~THERMAL_PROTECTION_DIS); 1385 } 1386 } 1387 1388 static void rv6xx_enable_auto_throttle_source(struct radeon_device *rdev, 1389 enum radeon_dpm_auto_throttle_src source, 1390 bool enable) 1391 { 1392 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1393 1394 if (enable) { 1395 if (!(pi->active_auto_throttle_sources & (1 << source))) { 1396 pi->active_auto_throttle_sources |= 1 << source; 1397 rv6xx_set_dpm_event_sources(rdev, pi->active_auto_throttle_sources); 1398 } 1399 } else { 1400 if (pi->active_auto_throttle_sources & (1 << source)) { 1401 pi->active_auto_throttle_sources &= ~(1 << source); 1402 rv6xx_set_dpm_event_sources(rdev, pi->active_auto_throttle_sources); 1403 } 1404 } 1405 } 1406 1407 1408 static void rv6xx_enable_thermal_protection(struct radeon_device *rdev, 1409 bool enable) 1410 { 1411 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1412 1413 if (pi->active_auto_throttle_sources) 1414 r600_enable_thermal_protection(rdev, enable); 1415 } 1416 1417 static void rv6xx_generate_transition_stepping(struct radeon_device *rdev, 1418 struct radeon_ps *new_ps, 1419 struct radeon_ps *old_ps) 1420 { 1421 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1422 struct rv6xx_ps *old_state = rv6xx_get_ps(old_ps); 1423 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1424 1425 rv6xx_generate_steps(rdev, 1426 old_state->low.sclk, 1427 new_state->low.sclk, 1428 0, &pi->hw.medium_sclk_index); 1429 } 1430 1431 static void rv6xx_generate_low_step(struct radeon_device *rdev, 1432 struct radeon_ps *new_ps) 1433 { 1434 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1435 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1436 1437 pi->hw.low_sclk_index = 0; 1438 rv6xx_generate_single_step(rdev, 1439 new_state->low.sclk, 1440 0); 1441 } 1442 1443 static void rv6xx_invalidate_intermediate_steps(struct radeon_device *rdev) 1444 { 1445 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1446 1447 rv6xx_invalidate_intermediate_steps_range(rdev, 0, 1448 pi->hw.medium_sclk_index); 1449 } 1450 1451 static void rv6xx_generate_stepping_table(struct radeon_device *rdev, 1452 struct radeon_ps *new_ps) 1453 { 1454 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1455 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1456 1457 pi->hw.low_sclk_index = 0; 1458 1459 rv6xx_generate_steps(rdev, 1460 new_state->low.sclk, 1461 new_state->medium.sclk, 1462 0, 1463 &pi->hw.medium_sclk_index); 1464 rv6xx_generate_steps(rdev, 1465 new_state->medium.sclk, 1466 new_state->high.sclk, 1467 pi->hw.medium_sclk_index, 1468 &pi->hw.high_sclk_index); 1469 } 1470 1471 static void rv6xx_enable_spread_spectrum(struct radeon_device *rdev, 1472 bool enable) 1473 { 1474 if (enable) 1475 rv6xx_enable_dynamic_spread_spectrum(rdev, true); 1476 else { 1477 rv6xx_enable_engine_spread_spectrum(rdev, R600_POWER_LEVEL_LOW, false); 1478 rv6xx_enable_engine_spread_spectrum(rdev, R600_POWER_LEVEL_MEDIUM, false); 1479 rv6xx_enable_engine_spread_spectrum(rdev, R600_POWER_LEVEL_HIGH, false); 1480 rv6xx_enable_dynamic_spread_spectrum(rdev, false); 1481 rv6xx_enable_memory_spread_spectrum(rdev, false); 1482 } 1483 } 1484 1485 static void rv6xx_reset_lvtm_data_sync(struct radeon_device *rdev) 1486 { 1487 if (ASIC_IS_DCE3(rdev)) 1488 WREG32_P(DCE3_LVTMA_DATA_SYNCHRONIZATION, LVTMA_PFREQCHG, ~LVTMA_PFREQCHG); 1489 else 1490 WREG32_P(LVTMA_DATA_SYNCHRONIZATION, LVTMA_PFREQCHG, ~LVTMA_PFREQCHG); 1491 } 1492 1493 static void rv6xx_enable_dynamic_pcie_gen2(struct radeon_device *rdev, 1494 struct radeon_ps *new_ps, 1495 bool enable) 1496 { 1497 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1498 1499 if (enable) { 1500 rv6xx_enable_bif_dynamic_pcie_gen2(rdev, true); 1501 rv6xx_enable_pcie_gen2_support(rdev); 1502 r600_enable_dynamic_pcie_gen2(rdev, true); 1503 } else { 1504 if (!(new_state->low.flags & ATOM_PPLIB_R600_FLAGS_PCIEGEN2)) 1505 rv6xx_force_pcie_gen1(rdev); 1506 rv6xx_enable_bif_dynamic_pcie_gen2(rdev, false); 1507 r600_enable_dynamic_pcie_gen2(rdev, false); 1508 } 1509 } 1510 1511 static void rv6xx_set_uvd_clock_before_set_eng_clock(struct radeon_device *rdev, 1512 struct radeon_ps *new_ps, 1513 struct radeon_ps *old_ps) 1514 { 1515 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1516 struct rv6xx_ps *current_state = rv6xx_get_ps(old_ps); 1517 1518 if ((new_ps->vclk == old_ps->vclk) && 1519 (new_ps->dclk == old_ps->dclk)) 1520 return; 1521 1522 if (new_state->high.sclk >= current_state->high.sclk) 1523 return; 1524 1525 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk); 1526 } 1527 1528 static void rv6xx_set_uvd_clock_after_set_eng_clock(struct radeon_device *rdev, 1529 struct radeon_ps *new_ps, 1530 struct radeon_ps *old_ps) 1531 { 1532 struct rv6xx_ps *new_state = rv6xx_get_ps(new_ps); 1533 struct rv6xx_ps *current_state = rv6xx_get_ps(old_ps); 1534 1535 if ((new_ps->vclk == old_ps->vclk) && 1536 (new_ps->dclk == old_ps->dclk)) 1537 return; 1538 1539 if (new_state->high.sclk < current_state->high.sclk) 1540 return; 1541 1542 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk); 1543 } 1544 1545 int rv6xx_dpm_enable(struct radeon_device *rdev) 1546 { 1547 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1548 struct radeon_ps *boot_ps = rdev->pm.dpm.boot_ps; 1549 int ret; 1550 1551 if (r600_dynamicpm_enabled(rdev)) 1552 return -EINVAL; 1553 1554 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_BACKBIAS) 1555 rv6xx_enable_backbias(rdev, true); 1556 1557 if (pi->dynamic_ss) 1558 rv6xx_enable_spread_spectrum(rdev, true); 1559 1560 rv6xx_program_mpll_timing_parameters(rdev); 1561 rv6xx_program_bsp(rdev); 1562 rv6xx_program_git(rdev); 1563 rv6xx_program_tp(rdev); 1564 rv6xx_program_tpp(rdev); 1565 rv6xx_program_sstp(rdev); 1566 rv6xx_program_fcp(rdev); 1567 rv6xx_program_vddc3d_parameters(rdev); 1568 rv6xx_program_voltage_timing_parameters(rdev); 1569 rv6xx_program_engine_speed_parameters(rdev); 1570 1571 rv6xx_enable_display_gap(rdev, true); 1572 if (pi->display_gap == false) 1573 rv6xx_enable_display_gap(rdev, false); 1574 1575 rv6xx_program_power_level_enter_state(rdev); 1576 1577 rv6xx_calculate_stepping_parameters(rdev, boot_ps); 1578 1579 if (pi->voltage_control) 1580 rv6xx_program_voltage_gpio_pins(rdev); 1581 1582 rv6xx_generate_stepping_table(rdev, boot_ps); 1583 1584 rv6xx_program_stepping_parameters_except_lowest_entry(rdev); 1585 rv6xx_program_stepping_parameters_lowest_entry(rdev); 1586 1587 rv6xx_program_power_level_low(rdev); 1588 rv6xx_program_power_level_medium(rdev); 1589 rv6xx_program_power_level_high(rdev); 1590 rv6xx_program_vc(rdev); 1591 rv6xx_program_at(rdev); 1592 1593 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true); 1594 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, true); 1595 r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, true); 1596 1597 if (rdev->irq.installed && 1598 r600_is_internal_thermal_sensor(rdev->pm.int_thermal_type)) { 1599 ret = r600_set_thermal_temperature_range(rdev, R600_TEMP_RANGE_MIN, R600_TEMP_RANGE_MAX); 1600 if (ret) 1601 return ret; 1602 rdev->irq.dpm_thermal = true; 1603 radeon_irq_set(rdev); 1604 } 1605 1606 rv6xx_enable_auto_throttle_source(rdev, RADEON_DPM_AUTO_THROTTLE_SRC_THERMAL, true); 1607 1608 r600_start_dpm(rdev); 1609 1610 if (pi->voltage_control) 1611 rv6xx_enable_static_voltage_control(rdev, boot_ps, false); 1612 1613 if (pi->dynamic_pcie_gen2) 1614 rv6xx_enable_dynamic_pcie_gen2(rdev, boot_ps, true); 1615 1616 if (pi->gfx_clock_gating) 1617 r600_gfx_clockgating_enable(rdev, true); 1618 1619 return 0; 1620 } 1621 1622 void rv6xx_dpm_disable(struct radeon_device *rdev) 1623 { 1624 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1625 struct radeon_ps *boot_ps = rdev->pm.dpm.boot_ps; 1626 1627 if (!r600_dynamicpm_enabled(rdev)) 1628 return; 1629 1630 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true); 1631 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, true); 1632 rv6xx_enable_display_gap(rdev, false); 1633 rv6xx_clear_vc(rdev); 1634 r600_set_at(rdev, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF); 1635 1636 if (pi->thermal_protection) 1637 r600_enable_thermal_protection(rdev, false); 1638 1639 r600_wait_for_power_level(rdev, R600_POWER_LEVEL_LOW); 1640 r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, false); 1641 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, false); 1642 1643 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_BACKBIAS) 1644 rv6xx_enable_backbias(rdev, false); 1645 1646 rv6xx_enable_spread_spectrum(rdev, false); 1647 1648 if (pi->voltage_control) 1649 rv6xx_enable_static_voltage_control(rdev, boot_ps, true); 1650 1651 if (pi->dynamic_pcie_gen2) 1652 rv6xx_enable_dynamic_pcie_gen2(rdev, boot_ps, false); 1653 1654 if (rdev->irq.installed && 1655 r600_is_internal_thermal_sensor(rdev->pm.int_thermal_type)) { 1656 rdev->irq.dpm_thermal = false; 1657 radeon_irq_set(rdev); 1658 } 1659 1660 if (pi->gfx_clock_gating) 1661 r600_gfx_clockgating_enable(rdev, false); 1662 1663 r600_stop_dpm(rdev); 1664 } 1665 1666 int rv6xx_dpm_set_power_state(struct radeon_device *rdev) 1667 { 1668 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 1669 struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps; 1670 struct radeon_ps *old_ps = rdev->pm.dpm.current_ps; 1671 int ret; 1672 1673 pi->restricted_levels = 0; 1674 1675 rv6xx_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps); 1676 1677 rv6xx_clear_vc(rdev); 1678 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true); 1679 r600_set_at(rdev, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF); 1680 1681 if (pi->thermal_protection) 1682 r600_enable_thermal_protection(rdev, false); 1683 1684 r600_wait_for_power_level(rdev, R600_POWER_LEVEL_LOW); 1685 r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, false); 1686 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, false); 1687 1688 rv6xx_generate_transition_stepping(rdev, new_ps, old_ps); 1689 rv6xx_program_power_level_medium_for_transition(rdev); 1690 1691 if (pi->voltage_control) { 1692 rv6xx_set_sw_voltage_to_safe(rdev, new_ps, old_ps); 1693 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_STEPVDDC) 1694 rv6xx_set_sw_voltage_to_low(rdev, old_ps); 1695 } 1696 1697 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_BACKBIAS) 1698 rv6xx_set_safe_backbias(rdev, new_ps, old_ps); 1699 1700 if (pi->dynamic_pcie_gen2) 1701 rv6xx_set_safe_pcie_gen2(rdev, new_ps, old_ps); 1702 1703 if (pi->voltage_control) 1704 rv6xx_enable_dynamic_voltage_control(rdev, false); 1705 1706 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_BACKBIAS) 1707 rv6xx_enable_dynamic_backbias_control(rdev, false); 1708 1709 if (pi->voltage_control) { 1710 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_STEPVDDC) 1711 rv6xx_step_voltage_if_increasing(rdev, new_ps, old_ps); 1712 msleep((rdev->pm.dpm.voltage_response_time + 999) / 1000); 1713 } 1714 1715 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, true); 1716 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, false); 1717 r600_wait_for_power_level_unequal(rdev, R600_POWER_LEVEL_LOW); 1718 1719 rv6xx_generate_low_step(rdev, new_ps); 1720 rv6xx_invalidate_intermediate_steps(rdev); 1721 rv6xx_calculate_stepping_parameters(rdev, new_ps); 1722 rv6xx_program_stepping_parameters_lowest_entry(rdev); 1723 rv6xx_program_power_level_low_to_lowest_state(rdev); 1724 1725 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true); 1726 r600_wait_for_power_level(rdev, R600_POWER_LEVEL_LOW); 1727 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, false); 1728 1729 if (pi->voltage_control) { 1730 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_STEPVDDC) { 1731 ret = rv6xx_step_voltage_if_decreasing(rdev, new_ps, old_ps); 1732 if (ret) 1733 return ret; 1734 } 1735 rv6xx_enable_dynamic_voltage_control(rdev, true); 1736 } 1737 1738 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_BACKBIAS) 1739 rv6xx_enable_dynamic_backbias_control(rdev, true); 1740 1741 if (pi->dynamic_pcie_gen2) 1742 rv6xx_enable_dynamic_pcie_gen2(rdev, new_ps, true); 1743 1744 rv6xx_reset_lvtm_data_sync(rdev); 1745 1746 rv6xx_generate_stepping_table(rdev, new_ps); 1747 rv6xx_program_stepping_parameters_except_lowest_entry(rdev); 1748 rv6xx_program_power_level_low(rdev); 1749 rv6xx_program_power_level_medium(rdev); 1750 rv6xx_program_power_level_high(rdev); 1751 rv6xx_enable_medium(rdev); 1752 rv6xx_enable_high(rdev); 1753 1754 if (pi->thermal_protection) 1755 rv6xx_enable_thermal_protection(rdev, true); 1756 rv6xx_program_vc(rdev); 1757 rv6xx_program_at(rdev); 1758 1759 rv6xx_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps); 1760 1761 return 0; 1762 } 1763 1764 void rv6xx_setup_asic(struct radeon_device *rdev) 1765 { 1766 r600_enable_acpi_pm(rdev); 1767 1768 if (radeon_aspm != 0) { 1769 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L0s) 1770 rv6xx_enable_l0s(rdev); 1771 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L1) 1772 rv6xx_enable_l1(rdev); 1773 if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_TURNOFFPLL_ASPML1) 1774 rv6xx_enable_pll_sleep_in_l1(rdev); 1775 } 1776 } 1777 1778 void rv6xx_dpm_display_configuration_changed(struct radeon_device *rdev) 1779 { 1780 rv6xx_program_display_gap(rdev); 1781 } 1782 1783 union power_info { 1784 struct _ATOM_POWERPLAY_INFO info; 1785 struct _ATOM_POWERPLAY_INFO_V2 info_2; 1786 struct _ATOM_POWERPLAY_INFO_V3 info_3; 1787 struct _ATOM_PPLIB_POWERPLAYTABLE pplib; 1788 struct _ATOM_PPLIB_POWERPLAYTABLE2 pplib2; 1789 struct _ATOM_PPLIB_POWERPLAYTABLE3 pplib3; 1790 }; 1791 1792 union pplib_clock_info { 1793 struct _ATOM_PPLIB_R600_CLOCK_INFO r600; 1794 struct _ATOM_PPLIB_RS780_CLOCK_INFO rs780; 1795 struct _ATOM_PPLIB_EVERGREEN_CLOCK_INFO evergreen; 1796 struct _ATOM_PPLIB_SUMO_CLOCK_INFO sumo; 1797 }; 1798 1799 union pplib_power_state { 1800 struct _ATOM_PPLIB_STATE v1; 1801 struct _ATOM_PPLIB_STATE_V2 v2; 1802 }; 1803 1804 static void rv6xx_parse_pplib_non_clock_info(struct radeon_device *rdev, 1805 struct radeon_ps *rps, 1806 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info) 1807 { 1808 rps->caps = le32_to_cpu(non_clock_info->ulCapsAndSettings); 1809 rps->class = le16_to_cpu(non_clock_info->usClassification); 1810 rps->class2 = le16_to_cpu(non_clock_info->usClassification2); 1811 1812 if (r600_is_uvd_state(rps->class, rps->class2)) { 1813 rps->vclk = RV6XX_DEFAULT_VCLK_FREQ; 1814 rps->dclk = RV6XX_DEFAULT_DCLK_FREQ; 1815 } else { 1816 rps->vclk = 0; 1817 rps->dclk = 0; 1818 } 1819 1820 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT) 1821 rdev->pm.dpm.boot_ps = rps; 1822 if (rps->class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE) 1823 rdev->pm.dpm.uvd_ps = rps; 1824 } 1825 1826 static void rv6xx_parse_pplib_clock_info(struct radeon_device *rdev, 1827 struct radeon_ps *rps, int index, 1828 union pplib_clock_info *clock_info) 1829 { 1830 struct rv6xx_ps *ps = rv6xx_get_ps(rps); 1831 u32 sclk, mclk; 1832 u16 vddc; 1833 struct rv6xx_pl *pl; 1834 1835 switch (index) { 1836 case 0: 1837 pl = &ps->low; 1838 break; 1839 case 1: 1840 pl = &ps->medium; 1841 break; 1842 case 2: 1843 default: 1844 pl = &ps->high; 1845 break; 1846 } 1847 1848 sclk = le16_to_cpu(clock_info->r600.usEngineClockLow); 1849 sclk |= clock_info->r600.ucEngineClockHigh << 16; 1850 mclk = le16_to_cpu(clock_info->r600.usMemoryClockLow); 1851 mclk |= clock_info->r600.ucMemoryClockHigh << 16; 1852 1853 pl->mclk = mclk; 1854 pl->sclk = sclk; 1855 pl->vddc = le16_to_cpu(clock_info->r600.usVDDC); 1856 pl->flags = le32_to_cpu(clock_info->r600.ulFlags); 1857 1858 /* patch up vddc if necessary */ 1859 if (pl->vddc == 0xff01) { 1860 if (radeon_atom_get_max_vddc(rdev, 0, 0, &vddc) == 0) 1861 pl->vddc = vddc; 1862 } 1863 1864 /* fix up pcie gen2 */ 1865 if (pl->flags & ATOM_PPLIB_R600_FLAGS_PCIEGEN2) { 1866 if ((rdev->family == CHIP_RV610) || (rdev->family == CHIP_RV630)) { 1867 if (pl->vddc < 1100) 1868 pl->flags &= ~ATOM_PPLIB_R600_FLAGS_PCIEGEN2; 1869 } 1870 } 1871 1872 /* patch up boot state */ 1873 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT) { 1874 u16 vddc, vddci, mvdd; 1875 radeon_atombios_get_default_voltages(rdev, &vddc, &vddci, &mvdd); 1876 pl->mclk = rdev->clock.default_mclk; 1877 pl->sclk = rdev->clock.default_sclk; 1878 pl->vddc = vddc; 1879 } 1880 } 1881 1882 static int rv6xx_parse_power_table(struct radeon_device *rdev) 1883 { 1884 struct radeon_mode_info *mode_info = &rdev->mode_info; 1885 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info; 1886 union pplib_power_state *power_state; 1887 int i, j; 1888 union pplib_clock_info *clock_info; 1889 union power_info *power_info; 1890 int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo); 1891 u16 data_offset; 1892 u8 frev, crev; 1893 struct rv6xx_ps *ps; 1894 1895 if (!atom_parse_data_header(mode_info->atom_context, index, NULL, 1896 &frev, &crev, &data_offset)) 1897 return -EINVAL; 1898 power_info = (union power_info *)(mode_info->atom_context->bios + data_offset); 1899 1900 rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * 1901 power_info->pplib.ucNumStates, GFP_KERNEL); 1902 if (!rdev->pm.dpm.ps) 1903 return -ENOMEM; 1904 rdev->pm.dpm.platform_caps = le32_to_cpu(power_info->pplib.ulPlatformCaps); 1905 rdev->pm.dpm.backbias_response_time = le16_to_cpu(power_info->pplib.usBackbiasTime); 1906 rdev->pm.dpm.voltage_response_time = le16_to_cpu(power_info->pplib.usVoltageTime); 1907 1908 for (i = 0; i < power_info->pplib.ucNumStates; i++) { 1909 power_state = (union pplib_power_state *) 1910 (mode_info->atom_context->bios + data_offset + 1911 le16_to_cpu(power_info->pplib.usStateArrayOffset) + 1912 i * power_info->pplib.ucStateEntrySize); 1913 non_clock_info = (struct _ATOM_PPLIB_NONCLOCK_INFO *) 1914 (mode_info->atom_context->bios + data_offset + 1915 le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset) + 1916 (power_state->v1.ucNonClockStateIndex * 1917 power_info->pplib.ucNonClockSize)); 1918 if (power_info->pplib.ucStateEntrySize - 1) { 1919 u8 *idx; 1920 ps = kzalloc(sizeof(struct rv6xx_ps), GFP_KERNEL); 1921 if (ps == NULL) { 1922 kfree(rdev->pm.dpm.ps); 1923 return -ENOMEM; 1924 } 1925 rdev->pm.dpm.ps[i].ps_priv = ps; 1926 rv6xx_parse_pplib_non_clock_info(rdev, &rdev->pm.dpm.ps[i], 1927 non_clock_info); 1928 idx = (u8 *)&power_state->v1.ucClockStateIndices[0]; 1929 for (j = 0; j < (power_info->pplib.ucStateEntrySize - 1); j++) { 1930 clock_info = (union pplib_clock_info *) 1931 (mode_info->atom_context->bios + data_offset + 1932 le16_to_cpu(power_info->pplib.usClockInfoArrayOffset) + 1933 (idx[j] * power_info->pplib.ucClockInfoSize)); 1934 rv6xx_parse_pplib_clock_info(rdev, 1935 &rdev->pm.dpm.ps[i], j, 1936 clock_info); 1937 } 1938 } 1939 } 1940 rdev->pm.dpm.num_ps = power_info->pplib.ucNumStates; 1941 return 0; 1942 } 1943 1944 int rv6xx_dpm_init(struct radeon_device *rdev) 1945 { 1946 struct radeon_atom_ss ss; 1947 struct atom_clock_dividers dividers; 1948 struct rv6xx_power_info *pi; 1949 int ret; 1950 1951 pi = kzalloc(sizeof(struct rv6xx_power_info), GFP_KERNEL); 1952 if (pi == NULL) 1953 return -ENOMEM; 1954 rdev->pm.dpm.priv = pi; 1955 1956 ret = rv6xx_parse_power_table(rdev); 1957 if (ret) 1958 return ret; 1959 1960 if (rdev->pm.dpm.voltage_response_time == 0) 1961 rdev->pm.dpm.voltage_response_time = R600_VOLTAGERESPONSETIME_DFLT; 1962 if (rdev->pm.dpm.backbias_response_time == 0) 1963 rdev->pm.dpm.backbias_response_time = R600_BACKBIASRESPONSETIME_DFLT; 1964 1965 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 1966 0, false, ÷rs); 1967 if (ret) 1968 pi->spll_ref_div = dividers.ref_div + 1; 1969 else 1970 pi->spll_ref_div = R600_REFERENCEDIVIDER_DFLT; 1971 1972 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_MEMORY_PLL_PARAM, 1973 0, false, ÷rs); 1974 if (ret) 1975 pi->mpll_ref_div = dividers.ref_div + 1; 1976 else 1977 pi->mpll_ref_div = R600_REFERENCEDIVIDER_DFLT; 1978 1979 if (rdev->family >= CHIP_RV670) 1980 pi->fb_div_scale = 1; 1981 else 1982 pi->fb_div_scale = 0; 1983 1984 pi->voltage_control = 1985 radeon_atom_is_voltage_gpio(rdev, SET_VOLTAGE_TYPE_ASIC_VDDC, 0); 1986 1987 pi->gfx_clock_gating = true; 1988 1989 pi->sclk_ss = radeon_atombios_get_asic_ss_info(rdev, &ss, 1990 ASIC_INTERNAL_ENGINE_SS, 0); 1991 pi->mclk_ss = radeon_atombios_get_asic_ss_info(rdev, &ss, 1992 ASIC_INTERNAL_MEMORY_SS, 0); 1993 1994 /* Disable sclk ss, causes hangs on a lot of systems */ 1995 pi->sclk_ss = false; 1996 1997 if (pi->sclk_ss || pi->mclk_ss) 1998 pi->dynamic_ss = true; 1999 else 2000 pi->dynamic_ss = false; 2001 2002 pi->dynamic_pcie_gen2 = true; 2003 2004 if (pi->gfx_clock_gating && 2005 (rdev->pm.int_thermal_type != THERMAL_TYPE_NONE)) 2006 pi->thermal_protection = true; 2007 else 2008 pi->thermal_protection = false; 2009 2010 pi->display_gap = true; 2011 2012 return 0; 2013 } 2014 2015 void rv6xx_dpm_print_power_state(struct radeon_device *rdev, 2016 struct radeon_ps *rps) 2017 { 2018 struct rv6xx_ps *ps = rv6xx_get_ps(rps); 2019 struct rv6xx_pl *pl; 2020 2021 r600_dpm_print_class_info(rps->class, rps->class2); 2022 r600_dpm_print_cap_info(rps->caps); 2023 printk("\tuvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk); 2024 pl = &ps->low; 2025 printk("\t\tpower level 0 sclk: %u mclk: %u vddc: %u\n", 2026 pl->sclk, pl->mclk, pl->vddc); 2027 pl = &ps->medium; 2028 printk("\t\tpower level 1 sclk: %u mclk: %u vddc: %u\n", 2029 pl->sclk, pl->mclk, pl->vddc); 2030 pl = &ps->high; 2031 printk("\t\tpower level 2 sclk: %u mclk: %u vddc: %u\n", 2032 pl->sclk, pl->mclk, pl->vddc); 2033 r600_dpm_print_ps_status(rdev, rps); 2034 } 2035 2036 void rv6xx_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev, 2037 struct seq_file *m) 2038 { 2039 struct radeon_ps *rps = rdev->pm.dpm.current_ps; 2040 struct rv6xx_ps *ps = rv6xx_get_ps(rps); 2041 struct rv6xx_pl *pl; 2042 u32 current_index = 2043 (RREG32(TARGET_AND_CURRENT_PROFILE_INDEX) & CURRENT_PROFILE_INDEX_MASK) >> 2044 CURRENT_PROFILE_INDEX_SHIFT; 2045 2046 if (current_index > 2) { 2047 seq_printf(m, "invalid dpm profile %d\n", current_index); 2048 } else { 2049 if (current_index == 0) 2050 pl = &ps->low; 2051 else if (current_index == 1) 2052 pl = &ps->medium; 2053 else /* current_index == 2 */ 2054 pl = &ps->high; 2055 seq_printf(m, "uvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk); 2056 seq_printf(m, "power level %d sclk: %u mclk: %u vddc: %u\n", 2057 current_index, pl->sclk, pl->mclk, pl->vddc); 2058 } 2059 } 2060 2061 void rv6xx_dpm_fini(struct radeon_device *rdev) 2062 { 2063 int i; 2064 2065 for (i = 0; i < rdev->pm.dpm.num_ps; i++) { 2066 kfree(rdev->pm.dpm.ps[i].ps_priv); 2067 } 2068 kfree(rdev->pm.dpm.ps); 2069 kfree(rdev->pm.dpm.priv); 2070 } 2071 2072 u32 rv6xx_dpm_get_sclk(struct radeon_device *rdev, bool low) 2073 { 2074 struct rv6xx_ps *requested_state = rv6xx_get_ps(rdev->pm.dpm.requested_ps); 2075 2076 if (low) 2077 return requested_state->low.sclk; 2078 else 2079 return requested_state->high.sclk; 2080 } 2081 2082 u32 rv6xx_dpm_get_mclk(struct radeon_device *rdev, bool low) 2083 { 2084 struct rv6xx_ps *requested_state = rv6xx_get_ps(rdev->pm.dpm.requested_ps); 2085 2086 if (low) 2087 return requested_state->low.mclk; 2088 else 2089 return requested_state->high.mclk; 2090 } 2091 2092 int rv6xx_dpm_force_performance_level(struct radeon_device *rdev, 2093 enum radeon_dpm_forced_level level) 2094 { 2095 struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); 2096 2097 if (level == RADEON_DPM_FORCED_LEVEL_HIGH) { 2098 pi->restricted_levels = 3; 2099 } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) { 2100 pi->restricted_levels = 2; 2101 } else { 2102 pi->restricted_levels = 0; 2103 } 2104 2105 rv6xx_clear_vc(rdev); 2106 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true); 2107 r600_set_at(rdev, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF); 2108 r600_wait_for_power_level(rdev, R600_POWER_LEVEL_LOW); 2109 r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, false); 2110 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, false); 2111 rv6xx_enable_medium(rdev); 2112 rv6xx_enable_high(rdev); 2113 if (pi->restricted_levels == 3) 2114 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, false); 2115 rv6xx_program_vc(rdev); 2116 rv6xx_program_at(rdev); 2117 2118 rdev->pm.dpm.forced_level = level; 2119 2120 return 0; 2121 } 2122