sys/dev/drm/radeon/rv730_dpm.c

   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 <drm/drmP.h>
  26 #include "radeon.h"
  27 #include "rv730d.h"
  28 #include "r600_dpm.h"
  29 #include "rv770_dpm.h"
  30 #include "atom.h"
  31
  32 #define MC_CG_ARB_FREQ_F0           0x0a
  33 #define MC_CG_ARB_FREQ_F1           0x0b
  34 #define MC_CG_ARB_FREQ_F2           0x0c
  35 #define MC_CG_ARB_FREQ_F3           0x0d
  36
  37 struct rv7xx_ps *rv770_get_ps(struct radeon_ps *rps);
  38 struct rv7xx_power_info *rv770_get_pi(struct radeon_device *rdev);
  39
  40 int rv730_populate_sclk_value(struct radeon_device *rdev,
  41                               u32 engine_clock,
  42                               RV770_SMC_SCLK_VALUE *sclk)
  43 {
  44         struct rv7xx_power_info *pi = rv770_get_pi(rdev);
  45         struct atom_clock_dividers dividers;
  46         u32 spll_func_cntl = pi->clk_regs.rv730.cg_spll_func_cntl;
  47         u32 spll_func_cntl_2 = pi->clk_regs.rv730.cg_spll_func_cntl_2;
  48         u32 spll_func_cntl_3 = pi->clk_regs.rv730.cg_spll_func_cntl_3;
  49         u32 cg_spll_spread_spectrum = pi->clk_regs.rv730.cg_spll_spread_spectrum;
  50         u32 cg_spll_spread_spectrum_2 = pi->clk_regs.rv730.cg_spll_spread_spectrum_2;
  51         u64 tmp;
  52         u32 reference_clock = rdev->clock.spll.reference_freq;
  53         u32 reference_divider, post_divider;
  54         u32 fbdiv;
  55         int ret;
  56
  57         ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
  58                                              engine_clock, false, &dividers);
  59         if (ret)
  60                 return ret;
  61
  62         reference_divider = 1 + dividers.ref_div;
  63
  64         if (dividers.enable_post_div)
  65                 post_divider = ((dividers.post_div >> 4) & 0xf) +
  66                         (dividers.post_div & 0xf) + 2;
  67         else
  68                 post_divider = 1;
  69
  70         tmp = (u64) engine_clock * reference_divider * post_divider * 16384;
  71         do_div(tmp, reference_clock);
  72         fbdiv = (u32) tmp;
  73
  74         /* set up registers */
  75         if (dividers.enable_post_div)
  76                 spll_func_cntl |= SPLL_DIVEN;
  77         else
  78                 spll_func_cntl &= ~SPLL_DIVEN;
  79         spll_func_cntl &= ~(SPLL_HILEN_MASK | SPLL_LOLEN_MASK | SPLL_REF_DIV_MASK);
  80         spll_func_cntl |= SPLL_REF_DIV(dividers.ref_div);
  81         spll_func_cntl |= SPLL_HILEN((dividers.post_div >> 4) & 0xf);
  82         spll_func_cntl |= SPLL_LOLEN(dividers.post_div & 0xf);
  83
  84         spll_func_cntl_2 &= ~SCLK_MUX_SEL_MASK;
  85         spll_func_cntl_2 |= SCLK_MUX_SEL(2);
  86
  87         spll_func_cntl_3 &= ~SPLL_FB_DIV_MASK;
  88         spll_func_cntl_3 |= SPLL_FB_DIV(fbdiv);
  89         spll_func_cntl_3 |= SPLL_DITHEN;
  90
  91         if (pi->sclk_ss) {
  92                 struct radeon_atom_ss ss;
  93                 u32 vco_freq = engine_clock * post_divider;
  94
  95                 if (radeon_atombios_get_asic_ss_info(rdev, &ss,
  96                                                      ASIC_INTERNAL_ENGINE_SS, vco_freq)) {
  97                         u32 clk_s = reference_clock * 5 / (reference_divider * ss.rate);
  98                         u32 clk_v = ss.percentage * fbdiv / (clk_s * 10000);
  99
 100                         cg_spll_spread_spectrum &= ~CLK_S_MASK;
 101                         cg_spll_spread_spectrum |= CLK_S(clk_s);
 102                         cg_spll_spread_spectrum |= SSEN;
 103
 104                         cg_spll_spread_spectrum_2 &= ~CLK_V_MASK;
 105                         cg_spll_spread_spectrum_2 |= CLK_V(clk_v);
 106                 }
 107         }
 108
 109         sclk->sclk_value = cpu_to_be32(engine_clock);
 110         sclk->vCG_SPLL_FUNC_CNTL = cpu_to_be32(spll_func_cntl);
 111         sclk->vCG_SPLL_FUNC_CNTL_2 = cpu_to_be32(spll_func_cntl_2);
 112         sclk->vCG_SPLL_FUNC_CNTL_3 = cpu_to_be32(spll_func_cntl_3);
 113         sclk->vCG_SPLL_SPREAD_SPECTRUM = cpu_to_be32(cg_spll_spread_spectrum);
 114         sclk->vCG_SPLL_SPREAD_SPECTRUM_2 = cpu_to_be32(cg_spll_spread_spectrum_2);
 115
 116         return 0;
 117 }
 118
 119 int rv730_populate_mclk_value(struct radeon_device *rdev,
 120                               u32 engine_clock, u32 memory_clock,
 121                               LPRV7XX_SMC_MCLK_VALUE mclk)
 122 {
 123         struct rv7xx_power_info *pi = rv770_get_pi(rdev);
 124         u32 mclk_pwrmgt_cntl = pi->clk_regs.rv730.mclk_pwrmgt_cntl;
 125         u32 dll_cntl = pi->clk_regs.rv730.dll_cntl;
 126         u32 mpll_func_cntl = pi->clk_regs.rv730.mpll_func_cntl;
 127         u32 mpll_func_cntl_2 = pi->clk_regs.rv730.mpll_func_cntl2;
 128         u32 mpll_func_cntl_3 = pi->clk_regs.rv730.mpll_func_cntl3;
 129         u32 mpll_ss = pi->clk_regs.rv730.mpll_ss;
 130         u32 mpll_ss2 = pi->clk_regs.rv730.mpll_ss2;
 131         struct atom_clock_dividers dividers;
 132         u32 post_divider, reference_divider;
 133         int ret;
 134
 135         ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_MEMORY_PLL_PARAM,
 136                                              memory_clock, false, &dividers);
 137         if (ret)
 138                 return ret;
 139
 140         reference_divider = dividers.ref_div + 1;
 141
 142         if (dividers.enable_post_div)
 143                 post_divider = ((dividers.post_div >> 4) & 0xf) +
 144                         (dividers.post_div & 0xf) + 2;
 145         else
 146                 post_divider = 1;
 147
 148         /* setup the registers */
 149         if (dividers.enable_post_div)
 150                 mpll_func_cntl |= MPLL_DIVEN;
 151         else
 152                 mpll_func_cntl &= ~MPLL_DIVEN;
 153
 154         mpll_func_cntl &= ~(MPLL_REF_DIV_MASK | MPLL_HILEN_MASK | MPLL_LOLEN_MASK);
 155         mpll_func_cntl |= MPLL_REF_DIV(dividers.ref_div);
 156         mpll_func_cntl |= MPLL_HILEN((dividers.post_div >> 4) & 0xf);
 157         mpll_func_cntl |= MPLL_LOLEN(dividers.post_div & 0xf);
 158
 159         mpll_func_cntl_3 &= ~MPLL_FB_DIV_MASK;
 160         mpll_func_cntl_3 |= MPLL_FB_DIV(dividers.fb_div);
 161         if (dividers.enable_dithen)
 162                 mpll_func_cntl_3 |= MPLL_DITHEN;
 163         else
 164                 mpll_func_cntl_3 &= ~MPLL_DITHEN;
 165
 166         if (pi->mclk_ss) {
 167                 struct radeon_atom_ss ss;
 168                 u32 vco_freq = memory_clock * post_divider;
 169
 170                 if (radeon_atombios_get_asic_ss_info(rdev, &ss,
 171                                                      ASIC_INTERNAL_MEMORY_SS, vco_freq)) {
 172                         u32 reference_clock = rdev->clock.mpll.reference_freq;
 173                         u32 clk_s = reference_clock * 5 / (reference_divider * ss.rate);
 174                         u32 clk_v = ss.percentage * dividers.fb_div / (clk_s * 10000);
 175
 176                         mpll_ss &= ~CLK_S_MASK;
 177                         mpll_ss |= CLK_S(clk_s);
 178                         mpll_ss |= SSEN;
 179
 180                         mpll_ss2 &= ~CLK_V_MASK;
 181                         mpll_ss |= CLK_V(clk_v);
 182                 }
 183         }
 184
 185
 186         mclk->mclk730.vMCLK_PWRMGT_CNTL = cpu_to_be32(mclk_pwrmgt_cntl);
 187         mclk->mclk730.vDLL_CNTL = cpu_to_be32(dll_cntl);
 188         mclk->mclk730.mclk_value = cpu_to_be32(memory_clock);
 189         mclk->mclk730.vMPLL_FUNC_CNTL = cpu_to_be32(mpll_func_cntl);
 190         mclk->mclk730.vMPLL_FUNC_CNTL2 = cpu_to_be32(mpll_func_cntl_2);
 191         mclk->mclk730.vMPLL_FUNC_CNTL3 = cpu_to_be32(mpll_func_cntl_3);
 192         mclk->mclk730.vMPLL_SS = cpu_to_be32(mpll_ss);
 193         mclk->mclk730.vMPLL_SS2 = cpu_to_be32(mpll_ss2);
 194
 195         return 0;
 196 }
 197
 198 void rv730_read_clock_registers(struct radeon_device *rdev)
 199 {
 200         struct rv7xx_power_info *pi = rv770_get_pi(rdev);
 201
 202         pi->clk_regs.rv730.cg_spll_func_cntl =
 203                 RREG32(CG_SPLL_FUNC_CNTL);
 204         pi->clk_regs.rv730.cg_spll_func_cntl_2 =
 205                 RREG32(CG_SPLL_FUNC_CNTL_2);
 206         pi->clk_regs.rv730.cg_spll_func_cntl_3 =
 207                 RREG32(CG_SPLL_FUNC_CNTL_3);
 208         pi->clk_regs.rv730.cg_spll_spread_spectrum =
 209                 RREG32(CG_SPLL_SPREAD_SPECTRUM);
 210         pi->clk_regs.rv730.cg_spll_spread_spectrum_2 =
 211                 RREG32(CG_SPLL_SPREAD_SPECTRUM_2);
 212
 213         pi->clk_regs.rv730.mclk_pwrmgt_cntl =
 214                 RREG32(TCI_MCLK_PWRMGT_CNTL);
 215         pi->clk_regs.rv730.dll_cntl =
 216                 RREG32(TCI_DLL_CNTL);
 217         pi->clk_regs.rv730.mpll_func_cntl =
 218                 RREG32(CG_MPLL_FUNC_CNTL);
 219         pi->clk_regs.rv730.mpll_func_cntl2 =
 220                 RREG32(CG_MPLL_FUNC_CNTL_2);
 221         pi->clk_regs.rv730.mpll_func_cntl3 =
 222                 RREG32(CG_MPLL_FUNC_CNTL_3);
 223         pi->clk_regs.rv730.mpll_ss =
 224                 RREG32(CG_TCI_MPLL_SPREAD_SPECTRUM);
 225         pi->clk_regs.rv730.mpll_ss2 =
 226                 RREG32(CG_TCI_MPLL_SPREAD_SPECTRUM_2);
 227 }
 228
 229 int rv730_populate_smc_acpi_state(struct radeon_device *rdev,
 230                                   RV770_SMC_STATETABLE *table)
 231 {
 232         struct rv7xx_power_info *pi = rv770_get_pi(rdev);
 233         u32 mpll_func_cntl = 0;
 234         u32 mpll_func_cntl_2 = 0 ;
 235         u32 mpll_func_cntl_3 = 0;
 236         u32 mclk_pwrmgt_cntl;
 237         u32 dll_cntl;
 238         u32 spll_func_cntl;
 239         u32 spll_func_cntl_2;
 240         u32 spll_func_cntl_3;
 241
 242         table->ACPIState = table->initialState;
 243         table->ACPIState.flags &= ~PPSMC_SWSTATE_FLAG_DC;
 244
 245         if (pi->acpi_vddc) {
 246                 rv770_populate_vddc_value(rdev, pi->acpi_vddc,
 247                                           &table->ACPIState.levels[0].vddc);
 248                 table->ACPIState.levels[0].gen2PCIE = pi->pcie_gen2 ?
 249                         pi->acpi_pcie_gen2 : 0;
 250                 table->ACPIState.levels[0].gen2XSP =
 251                         pi->acpi_pcie_gen2;
 252         } else {
 253                 rv770_populate_vddc_value(rdev, pi->min_vddc_in_table,
 254                                           &table->ACPIState.levels[0].vddc);
 255                 table->ACPIState.levels[0].gen2PCIE = 0;
 256         }
 257
 258         mpll_func_cntl = pi->clk_regs.rv730.mpll_func_cntl;
 259         mpll_func_cntl_2 = pi->clk_regs.rv730.mpll_func_cntl2;
 260         mpll_func_cntl_3 = pi->clk_regs.rv730.mpll_func_cntl3;
 261
 262         mpll_func_cntl |= MPLL_RESET | MPLL_BYPASS_EN;
 263         mpll_func_cntl &= ~MPLL_SLEEP;
 264
 265         mpll_func_cntl_2 &= ~MCLK_MUX_SEL_MASK;
 266         mpll_func_cntl_2 |= MCLK_MUX_SEL(1);
 267
 268         mclk_pwrmgt_cntl = (MRDCKA_RESET |
 269                             MRDCKB_RESET |
 270                             MRDCKC_RESET |
 271                             MRDCKD_RESET |
 272                             MRDCKE_RESET |
 273                             MRDCKF_RESET |
 274                             MRDCKG_RESET |
 275                             MRDCKH_RESET |
 276                             MRDCKA_SLEEP |
 277                             MRDCKB_SLEEP |
 278                             MRDCKC_SLEEP |
 279                             MRDCKD_SLEEP |
 280                             MRDCKE_SLEEP |
 281                             MRDCKF_SLEEP |
 282                             MRDCKG_SLEEP |
 283                             MRDCKH_SLEEP);
 284
 285         dll_cntl = 0xff000000;
 286
 287         spll_func_cntl = pi->clk_regs.rv730.cg_spll_func_cntl;
 288         spll_func_cntl_2 = pi->clk_regs.rv730.cg_spll_func_cntl_2;
 289         spll_func_cntl_3 = pi->clk_regs.rv730.cg_spll_func_cntl_3;
 290
 291         spll_func_cntl |= SPLL_RESET | SPLL_BYPASS_EN;
 292         spll_func_cntl &= ~SPLL_SLEEP;
 293
 294         spll_func_cntl_2 &= ~SCLK_MUX_SEL_MASK;
 295         spll_func_cntl_2 |= SCLK_MUX_SEL(4);
 296
 297         table->ACPIState.levels[0].mclk.mclk730.vMPLL_FUNC_CNTL = cpu_to_be32(mpll_func_cntl);
 298         table->ACPIState.levels[0].mclk.mclk730.vMPLL_FUNC_CNTL2 = cpu_to_be32(mpll_func_cntl_2);
 299         table->ACPIState.levels[0].mclk.mclk730.vMPLL_FUNC_CNTL3 = cpu_to_be32(mpll_func_cntl_3);
 300         table->ACPIState.levels[0].mclk.mclk730.vMCLK_PWRMGT_CNTL = cpu_to_be32(mclk_pwrmgt_cntl);
 301         table->ACPIState.levels[0].mclk.mclk730.vDLL_CNTL = cpu_to_be32(dll_cntl);
 302
 303         table->ACPIState.levels[0].mclk.mclk730.mclk_value = 0;
 304
 305         table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL = cpu_to_be32(spll_func_cntl);
 306         table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_2 = cpu_to_be32(spll_func_cntl_2);
 307         table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_3 = cpu_to_be32(spll_func_cntl_3);
 308
 309         table->ACPIState.levels[0].sclk.sclk_value = 0;
 310
 311         rv770_populate_mvdd_value(rdev, 0, &table->ACPIState.levels[0].mvdd);
 312
 313         table->ACPIState.levels[1] = table->ACPIState.levels[0];
 314         table->ACPIState.levels[2] = table->ACPIState.levels[0];
 315
 316         return 0;
 317 }
 318
 319 int rv730_populate_smc_initial_state(struct radeon_device *rdev,
 320                                      struct radeon_ps *radeon_state,
 321                                      RV770_SMC_STATETABLE *table)
 322 {
 323         struct rv7xx_ps *initial_state = rv770_get_ps(radeon_state);
 324         struct rv7xx_power_info *pi = rv770_get_pi(rdev);
 325         u32 a_t;
 326
 327         table->initialState.levels[0].mclk.mclk730.vMPLL_FUNC_CNTL =
 328                 cpu_to_be32(pi->clk_regs.rv730.mpll_func_cntl);
 329         table->initialState.levels[0].mclk.mclk730.vMPLL_FUNC_CNTL2 =
 330                 cpu_to_be32(pi->clk_regs.rv730.mpll_func_cntl2);
 331         table->initialState.levels[0].mclk.mclk730.vMPLL_FUNC_CNTL3 =
 332                 cpu_to_be32(pi->clk_regs.rv730.mpll_func_cntl3);
 333         table->initialState.levels[0].mclk.mclk730.vMCLK_PWRMGT_CNTL =
 334                 cpu_to_be32(pi->clk_regs.rv730.mclk_pwrmgt_cntl);
 335         table->initialState.levels[0].mclk.mclk730.vDLL_CNTL =
 336                 cpu_to_be32(pi->clk_regs.rv730.dll_cntl);
 337         table->initialState.levels[0].mclk.mclk730.vMPLL_SS =
 338                 cpu_to_be32(pi->clk_regs.rv730.mpll_ss);
 339         table->initialState.levels[0].mclk.mclk730.vMPLL_SS2 =
 340                 cpu_to_be32(pi->clk_regs.rv730.mpll_ss2);
 341
 342         table->initialState.levels[0].mclk.mclk730.mclk_value =
 343                 cpu_to_be32(initial_state->low.mclk);
 344
 345         table->initialState.levels[0].sclk.vCG_SPLL_FUNC_CNTL =
 346                 cpu_to_be32(pi->clk_regs.rv730.cg_spll_func_cntl);
 347         table->initialState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_2 =
 348                 cpu_to_be32(pi->clk_regs.rv730.cg_spll_func_cntl_2);
 349         table->initialState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_3 =
 350                 cpu_to_be32(pi->clk_regs.rv730.cg_spll_func_cntl_3);
 351         table->initialState.levels[0].sclk.vCG_SPLL_SPREAD_SPECTRUM =
 352                 cpu_to_be32(pi->clk_regs.rv730.cg_spll_spread_spectrum);
 353         table->initialState.levels[0].sclk.vCG_SPLL_SPREAD_SPECTRUM_2 =
 354                 cpu_to_be32(pi->clk_regs.rv730.cg_spll_spread_spectrum_2);
 355
 356         table->initialState.levels[0].sclk.sclk_value =
 357                 cpu_to_be32(initial_state->low.sclk);
 358
 359         table->initialState.levels[0].arbValue = MC_CG_ARB_FREQ_F0;
 360
 361         table->initialState.levels[0].seqValue =
 362                 rv770_get_seq_value(rdev, &initial_state->low);
 363
 364         rv770_populate_vddc_value(rdev,
 365                                   initial_state->low.vddc,
 366                                   &table->initialState.levels[0].vddc);
 367         rv770_populate_initial_mvdd_value(rdev,
 368                                           &table->initialState.levels[0].mvdd);
 369
 370         a_t = CG_R(0xffff) | CG_L(0);
 371
 372         table->initialState.levels[0].aT = cpu_to_be32(a_t);
 373
 374         table->initialState.levels[0].bSP = cpu_to_be32(pi->dsp);
 375
 376         if (pi->boot_in_gen2)
 377                 table->initialState.levels[0].gen2PCIE = 1;
 378         else
 379                 table->initialState.levels[0].gen2PCIE = 0;
 380         if (initial_state->low.flags & ATOM_PPLIB_R600_FLAGS_PCIEGEN2)
 381                 table->initialState.levels[0].gen2XSP = 1;
 382         else
 383                 table->initialState.levels[0].gen2XSP = 0;
 384
 385         table->initialState.levels[1] = table->initialState.levels[0];
 386         table->initialState.levels[2] = table->initialState.levels[0];
 387
 388         table->initialState.flags |= PPSMC_SWSTATE_FLAG_DC;
 389
 390         return 0;
 391 }
 392
 393 void rv730_program_memory_timing_parameters(struct radeon_device *rdev,
 394                                             struct radeon_ps *radeon_state)
 395 {
 396         struct rv7xx_ps *state = rv770_get_ps(radeon_state);
 397         u32 arb_refresh_rate = 0;
 398         u32 dram_timing = 0;
 399         u32 dram_timing2 = 0;
 400         u32 old_dram_timing = 0;
 401         u32 old_dram_timing2 = 0;
 402
 403         arb_refresh_rate = RREG32(MC_ARB_RFSH_RATE) &
 404                 ~(POWERMODE1_MASK | POWERMODE2_MASK | POWERMODE3_MASK);
 405         arb_refresh_rate |=
 406                 (POWERMODE1(rv770_calculate_memory_refresh_rate(rdev, state->low.sclk)) |
 407                  POWERMODE2(rv770_calculate_memory_refresh_rate(rdev, state->medium.sclk)) |
 408                  POWERMODE3(rv770_calculate_memory_refresh_rate(rdev, state->high.sclk)));
 409         WREG32(MC_ARB_RFSH_RATE, arb_refresh_rate);
 410
 411         /* save the boot dram timings */
 412         old_dram_timing = RREG32(MC_ARB_DRAM_TIMING);
 413         old_dram_timing2 = RREG32(MC_ARB_DRAM_TIMING2);
 414
 415         radeon_atom_set_engine_dram_timings(rdev,
 416                                             state->high.sclk,
 417                                             state->high.mclk);
 418
 419         dram_timing = RREG32(MC_ARB_DRAM_TIMING);
 420         dram_timing2 = RREG32(MC_ARB_DRAM_TIMING2);
 421
 422         WREG32(MC_ARB_DRAM_TIMING_3, dram_timing);
 423         WREG32(MC_ARB_DRAM_TIMING2_3, dram_timing2);
 424
 425         radeon_atom_set_engine_dram_timings(rdev,
 426                                             state->medium.sclk,
 427                                             state->medium.mclk);
 428
 429         dram_timing = RREG32(MC_ARB_DRAM_TIMING);
 430         dram_timing2 = RREG32(MC_ARB_DRAM_TIMING2);
 431
 432         WREG32(MC_ARB_DRAM_TIMING_2, dram_timing);
 433         WREG32(MC_ARB_DRAM_TIMING2_2, dram_timing2);
 434
 435         radeon_atom_set_engine_dram_timings(rdev,
 436                                             state->low.sclk,
 437                                             state->low.mclk);
 438
 439         dram_timing = RREG32(MC_ARB_DRAM_TIMING);
 440         dram_timing2 = RREG32(MC_ARB_DRAM_TIMING2);
 441
 442         WREG32(MC_ARB_DRAM_TIMING_1, dram_timing);
 443         WREG32(MC_ARB_DRAM_TIMING2_1, dram_timing2);
 444
 445         /* restore the boot dram timings */
 446         WREG32(MC_ARB_DRAM_TIMING, old_dram_timing);
 447         WREG32(MC_ARB_DRAM_TIMING2, old_dram_timing2);
 448
 449 }
 450
 451 void rv730_start_dpm(struct radeon_device *rdev)
 452 {
 453         WREG32_P(SCLK_PWRMGT_CNTL, 0, ~SCLK_PWRMGT_OFF);
 454
 455         WREG32_P(TCI_MCLK_PWRMGT_CNTL, 0, ~MPLL_PWRMGT_OFF);
 456
 457         WREG32_P(GENERAL_PWRMGT, GLOBAL_PWRMGT_EN, ~GLOBAL_PWRMGT_EN);
 458 }
 459
 460 void rv730_stop_dpm(struct radeon_device *rdev)
 461 {
 462         PPSMC_Result result;
 463
 464         result = rv770_send_msg_to_smc(rdev, PPSMC_MSG_TwoLevelsDisabled);
 465
 466         if (result != PPSMC_Result_OK)
 467                 DRM_DEBUG("Could not force DPM to low\n");
 468
 469         WREG32_P(GENERAL_PWRMGT, 0, ~GLOBAL_PWRMGT_EN);
 470
 471         WREG32_P(SCLK_PWRMGT_CNTL, SCLK_PWRMGT_OFF, ~SCLK_PWRMGT_OFF);
 472
 473         WREG32_P(TCI_MCLK_PWRMGT_CNTL, MPLL_PWRMGT_OFF, ~MPLL_PWRMGT_OFF);
 474 }
 475
 476 void rv730_program_dcodt(struct radeon_device *rdev, bool use_dcodt)
 477 {
 478         struct rv7xx_power_info *pi = rv770_get_pi(rdev);
 479         u32 i = use_dcodt ? 0 : 1;
 480         u32 mc4_io_pad_cntl;
 481
 482         mc4_io_pad_cntl = RREG32(MC4_IO_DQ_PAD_CNTL_D0_I0);
 483         mc4_io_pad_cntl &= 0xFFFFFF00;
 484         mc4_io_pad_cntl |= pi->odt_value_0[i];
 485         WREG32(MC4_IO_DQ_PAD_CNTL_D0_I0, mc4_io_pad_cntl);
 486         WREG32(MC4_IO_DQ_PAD_CNTL_D0_I1, mc4_io_pad_cntl);
 487
 488         mc4_io_pad_cntl = RREG32(MC4_IO_QS_PAD_CNTL_D0_I0);
 489         mc4_io_pad_cntl &= 0xFFFFFF00;
 490         mc4_io_pad_cntl |= pi->odt_value_1[i];
 491         WREG32(MC4_IO_QS_PAD_CNTL_D0_I0, mc4_io_pad_cntl);
 492         WREG32(MC4_IO_QS_PAD_CNTL_D0_I1, mc4_io_pad_cntl);
 493 }
 494
 495 void rv730_get_odt_values(struct radeon_device *rdev)
 496 {
 497         struct rv7xx_power_info *pi = rv770_get_pi(rdev);
 498         u32 mc4_io_pad_cntl;
 499
 500         pi->odt_value_0[0] = (u8)0;
 501         pi->odt_value_1[0] = (u8)0x80;
 502
 503         mc4_io_pad_cntl = RREG32(MC4_IO_DQ_PAD_CNTL_D0_I0);
 504         pi->odt_value_0[1] = (u8)(mc4_io_pad_cntl & 0xff);
 505
 506         mc4_io_pad_cntl = RREG32(MC4_IO_QS_PAD_CNTL_D0_I0);
 507         pi->odt_value_1[1] = (u8)(mc4_io_pad_cntl & 0xff);
 508 }