drivers/platform/x86/amd/pmf/sps.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * AMD Platform Management Framework (PMF) Driver
   4  *
   5  * Copyright (c) 2022, Advanced Micro Devices, Inc.
   6  * All Rights Reserved.
   7  *
   8  * Author: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
   9  */
  10
  11 #include "pmf.h"
  12
  13 static struct amd_pmf_static_slider_granular_v2 config_store_v2;
  14 static struct amd_pmf_static_slider_granular config_store;
  15 static struct amd_pmf_apts_granular apts_config_store;
  16
  17 #ifdef CONFIG_AMD_PMF_DEBUG
  18 static const char *slider_v2_as_str(unsigned int state)
  19 {
  20         switch (state) {
  21         case POWER_MODE_BEST_PERFORMANCE:
  22                 return "Best Performance";
  23         case POWER_MODE_BALANCED:
  24                 return "Balanced";
  25         case POWER_MODE_BEST_POWER_EFFICIENCY:
  26                 return "Best Power Efficiency";
  27         case POWER_MODE_ENERGY_SAVE:
  28                 return "Energy Save";
  29         default:
  30                 return "Unknown Power Mode";
  31         }
  32 }
  33
  34 static const char *slider_as_str(unsigned int state)
  35 {
  36         switch (state) {
  37         case POWER_MODE_PERFORMANCE:
  38                 return "PERFORMANCE";
  39         case POWER_MODE_BALANCED_POWER:
  40                 return "BALANCED_POWER";
  41         case POWER_MODE_POWER_SAVER:
  42                 return "POWER_SAVER";
  43         default:
  44                 return "Unknown Slider State";
  45         }
  46 }
  47
  48 const char *amd_pmf_source_as_str(unsigned int state)
  49 {
  50         switch (state) {
  51         case POWER_SOURCE_AC:
  52                 return "AC";
  53         case POWER_SOURCE_DC:
  54                 return "DC";
  55         default:
  56                 return "Unknown Power State";
  57         }
  58 }
  59
  60 static void amd_pmf_dump_sps_defaults(struct amd_pmf_static_slider_granular *data)
  61 {
  62         int i, j;
  63
  64         pr_debug("Static Slider Data - BEGIN\n");
  65
  66         for (i = 0; i < POWER_SOURCE_MAX; i++) {
  67                 for (j = 0; j < POWER_MODE_MAX; j++) {
  68                         pr_debug("--- Source:%s Mode:%s ---\n", amd_pmf_source_as_str(i),
  69                                  slider_as_str(j));
  70                         pr_debug("SPL: %u mW\n", data->prop[i][j].spl);
  71                         pr_debug("SPPT: %u mW\n", data->prop[i][j].sppt);
  72                         pr_debug("SPPT_ApuOnly: %u mW\n", data->prop[i][j].sppt_apu_only);
  73                         pr_debug("FPPT: %u mW\n", data->prop[i][j].fppt);
  74                         pr_debug("STTMinLimit: %u mW\n", data->prop[i][j].stt_min);
  75                         pr_debug("STT_SkinTempLimit_APU: %u C\n",
  76                                  data->prop[i][j].stt_skin_temp[STT_TEMP_APU]);
  77                         pr_debug("STT_SkinTempLimit_HS2: %u C\n",
  78                                  data->prop[i][j].stt_skin_temp[STT_TEMP_HS2]);
  79                 }
  80         }
  81
  82         pr_debug("Static Slider Data - END\n");
  83 }
  84
  85 static void amd_pmf_dump_sps_defaults_v2(struct amd_pmf_static_slider_granular_v2 *data)
  86 {
  87         unsigned int i, j;
  88
  89         pr_debug("Static Slider APTS state index data - BEGIN");
  90         pr_debug("size: %u\n", data->size);
  91
  92         for (i = 0; i < POWER_SOURCE_MAX; i++)
  93                 for (j = 0; j < POWER_MODE_V2_MAX; j++)
  94                         pr_debug("%s %s: %u\n", amd_pmf_source_as_str(i), slider_v2_as_str(j),
  95                                  data->sps_idx.power_states[i][j]);
  96
  97         pr_debug("Static Slider APTS state index data - END\n");
  98 }
  99
 100 static void amd_pmf_dump_apts_sps_defaults(struct amd_pmf_apts_granular *info)
 101 {
 102         int i;
 103
 104         pr_debug("Static Slider APTS index default values data - BEGIN");
 105
 106         for (i = 0; i < APTS_MAX_STATES; i++) {
 107                 pr_debug("Table Version[%d] = %u\n", i, info->val[i].table_version);
 108                 pr_debug("Fan Index[%d] = %u\n", i, info->val[i].fan_table_idx);
 109                 pr_debug("PPT[%d] = %u\n", i, info->val[i].pmf_ppt);
 110                 pr_debug("PPT APU[%d] = %u\n", i, info->val[i].ppt_pmf_apu_only);
 111                 pr_debug("STT Min[%d] = %u\n", i, info->val[i].stt_min_limit);
 112                 pr_debug("STT APU[%d] = %u\n", i, info->val[i].stt_skin_temp_limit_apu);
 113                 pr_debug("STT HS2[%d] = %u\n", i, info->val[i].stt_skin_temp_limit_hs2);
 114         }
 115
 116         pr_debug("Static Slider APTS index default values data - END");
 117 }
 118 #else
 119 static void amd_pmf_dump_sps_defaults(struct amd_pmf_static_slider_granular *data) {}
 120 static void amd_pmf_dump_sps_defaults_v2(struct amd_pmf_static_slider_granular_v2 *data) {}
 121 static void amd_pmf_dump_apts_sps_defaults(struct amd_pmf_apts_granular *info) {}
 122 #endif
 123
 124 static void amd_pmf_load_apts_defaults_sps_v2(struct amd_pmf_dev *pdev)
 125 {
 126         struct amd_pmf_apts_granular_output output;
 127         struct amd_pmf_apts_output *ps;
 128         int i;
 129
 130         memset(&apts_config_store, 0, sizeof(apts_config_store));
 131
 132         ps = apts_config_store.val;
 133
 134         for (i = 0; i < APTS_MAX_STATES; i++) {
 135                 apts_get_static_slider_granular_v2(pdev, &output, i);
 136                 ps[i].table_version = output.val.table_version;
 137                 ps[i].fan_table_idx = output.val.fan_table_idx;
 138                 ps[i].pmf_ppt = output.val.pmf_ppt;
 139                 ps[i].ppt_pmf_apu_only = output.val.ppt_pmf_apu_only;
 140                 ps[i].stt_min_limit = output.val.stt_min_limit;
 141                 ps[i].stt_skin_temp_limit_apu = output.val.stt_skin_temp_limit_apu;
 142                 ps[i].stt_skin_temp_limit_hs2 = output.val.stt_skin_temp_limit_hs2;
 143         }
 144
 145         amd_pmf_dump_apts_sps_defaults(&apts_config_store);
 146 }
 147
 148 static void amd_pmf_load_defaults_sps_v2(struct amd_pmf_dev *dev)
 149 {
 150         struct apmf_static_slider_granular_output_v2 output;
 151         unsigned int i, j;
 152
 153         memset(&config_store_v2, 0, sizeof(config_store_v2));
 154         apmf_get_static_slider_granular_v2(dev, &output);
 155
 156         config_store_v2.size = output.size;
 157
 158         for (i = 0; i < POWER_SOURCE_MAX; i++)
 159                 for (j = 0; j < POWER_MODE_V2_MAX; j++)
 160                         config_store_v2.sps_idx.power_states[i][j] =
 161                                                         output.sps_idx.power_states[i][j];
 162
 163         amd_pmf_dump_sps_defaults_v2(&config_store_v2);
 164 }
 165
 166 static void amd_pmf_load_defaults_sps(struct amd_pmf_dev *dev)
 167 {
 168         struct apmf_static_slider_granular_output output;
 169         int i, j, idx = 0;
 170
 171         memset(&config_store, 0, sizeof(config_store));
 172         apmf_get_static_slider_granular(dev, &output);
 173
 174         for (i = 0; i < POWER_SOURCE_MAX; i++) {
 175                 for (j = 0; j < POWER_MODE_MAX; j++) {
 176                         config_store.prop[i][j].spl = output.prop[idx].spl;
 177                         config_store.prop[i][j].sppt = output.prop[idx].sppt;
 178                         config_store.prop[i][j].sppt_apu_only =
 179                                                 output.prop[idx].sppt_apu_only;
 180                         config_store.prop[i][j].fppt = output.prop[idx].fppt;
 181                         config_store.prop[i][j].stt_min = output.prop[idx].stt_min;
 182                         config_store.prop[i][j].stt_skin_temp[STT_TEMP_APU] =
 183                                         output.prop[idx].stt_skin_temp[STT_TEMP_APU];
 184                         config_store.prop[i][j].stt_skin_temp[STT_TEMP_HS2] =
 185                                         output.prop[idx].stt_skin_temp[STT_TEMP_HS2];
 186                         config_store.prop[i][j].fan_id = output.prop[idx].fan_id;
 187                         idx++;
 188                 }
 189         }
 190         amd_pmf_dump_sps_defaults(&config_store);
 191 }
 192
 193 static void amd_pmf_update_slider_v2(struct amd_pmf_dev *dev, int idx)
 194 {
 195         amd_pmf_send_cmd(dev, SET_PMF_PPT, false, apts_config_store.val[idx].pmf_ppt, NULL);
 196         amd_pmf_send_cmd(dev, SET_PMF_PPT_APU_ONLY, false,
 197                          apts_config_store.val[idx].ppt_pmf_apu_only, NULL);
 198         amd_pmf_send_cmd(dev, SET_STT_MIN_LIMIT, false,
 199                          apts_config_store.val[idx].stt_min_limit, NULL);
 200         amd_pmf_send_cmd(dev, SET_STT_LIMIT_APU, false,
 201                          apts_config_store.val[idx].stt_skin_temp_limit_apu, NULL);
 202         amd_pmf_send_cmd(dev, SET_STT_LIMIT_HS2, false,
 203                          apts_config_store.val[idx].stt_skin_temp_limit_hs2, NULL);
 204 }
 205
 206 void amd_pmf_update_slider(struct amd_pmf_dev *dev, bool op, int idx,
 207                            struct amd_pmf_static_slider_granular *table)
 208 {
 209         int src = amd_pmf_get_power_source();
 210
 211         if (op == SLIDER_OP_SET) {
 212                 amd_pmf_send_cmd(dev, SET_SPL, false, config_store.prop[src][idx].spl, NULL);
 213                 amd_pmf_send_cmd(dev, SET_FPPT, false, config_store.prop[src][idx].fppt, NULL);
 214                 amd_pmf_send_cmd(dev, SET_SPPT, false, config_store.prop[src][idx].sppt, NULL);
 215                 amd_pmf_send_cmd(dev, SET_SPPT_APU_ONLY, false,
 216                                  config_store.prop[src][idx].sppt_apu_only, NULL);
 217                 amd_pmf_send_cmd(dev, SET_STT_MIN_LIMIT, false,
 218                                  config_store.prop[src][idx].stt_min, NULL);
 219                 amd_pmf_send_cmd(dev, SET_STT_LIMIT_APU, false,
 220                                  config_store.prop[src][idx].stt_skin_temp[STT_TEMP_APU], NULL);
 221                 amd_pmf_send_cmd(dev, SET_STT_LIMIT_HS2, false,
 222                                  config_store.prop[src][idx].stt_skin_temp[STT_TEMP_HS2], NULL);
 223         } else if (op == SLIDER_OP_GET) {
 224                 amd_pmf_send_cmd(dev, GET_SPL, true, ARG_NONE, &table->prop[src][idx].spl);
 225                 amd_pmf_send_cmd(dev, GET_FPPT, true, ARG_NONE, &table->prop[src][idx].fppt);
 226                 amd_pmf_send_cmd(dev, GET_SPPT, true, ARG_NONE, &table->prop[src][idx].sppt);
 227                 amd_pmf_send_cmd(dev, GET_SPPT_APU_ONLY, true, ARG_NONE,
 228                                  &table->prop[src][idx].sppt_apu_only);
 229                 amd_pmf_send_cmd(dev, GET_STT_MIN_LIMIT, true, ARG_NONE,
 230                                  &table->prop[src][idx].stt_min);
 231                 amd_pmf_send_cmd(dev, GET_STT_LIMIT_APU, true, ARG_NONE,
 232                                  (u32 *)&table->prop[src][idx].stt_skin_temp[STT_TEMP_APU]);
 233                 amd_pmf_send_cmd(dev, GET_STT_LIMIT_HS2, true, ARG_NONE,
 234                                  (u32 *)&table->prop[src][idx].stt_skin_temp[STT_TEMP_HS2]);
 235         }
 236 }
 237
 238 static int amd_pmf_update_sps_power_limits_v2(struct amd_pmf_dev *pdev, int pwr_mode)
 239 {
 240         int src, index;
 241
 242         src = amd_pmf_get_power_source();
 243
 244         switch (pwr_mode) {
 245         case POWER_MODE_PERFORMANCE:
 246                 index = config_store_v2.sps_idx.power_states[src][POWER_MODE_BEST_PERFORMANCE];
 247                 amd_pmf_update_slider_v2(pdev, index);
 248                 break;
 249         case POWER_MODE_BALANCED_POWER:
 250                 index = config_store_v2.sps_idx.power_states[src][POWER_MODE_BALANCED];
 251                 amd_pmf_update_slider_v2(pdev, index);
 252                 break;
 253         case POWER_MODE_POWER_SAVER:
 254                 index = config_store_v2.sps_idx.power_states[src][POWER_MODE_BEST_POWER_EFFICIENCY];
 255                 amd_pmf_update_slider_v2(pdev, index);
 256                 break;
 257         default:
 258                 return -EINVAL;
 259         }
 260
 261         return 0;
 262 }
 263
 264 int amd_pmf_set_sps_power_limits(struct amd_pmf_dev *pmf)
 265 {
 266         int mode;
 267
 268         mode = amd_pmf_get_pprof_modes(pmf);
 269         if (mode < 0)
 270                 return mode;
 271
 272         if (pmf->pmf_if_version == PMF_IF_V2)
 273                 return amd_pmf_update_sps_power_limits_v2(pmf, mode);
 274
 275         amd_pmf_update_slider(pmf, SLIDER_OP_SET, mode, NULL);
 276
 277         return 0;
 278 }
 279
 280 bool is_pprof_balanced(struct amd_pmf_dev *pmf)
 281 {
 282         return (pmf->current_profile == PLATFORM_PROFILE_BALANCED) ? true : false;
 283 }
 284
 285 static int amd_pmf_profile_get(struct device *dev,
 286                                enum platform_profile_option *profile)
 287 {
 288         struct amd_pmf_dev *pmf = dev_get_drvdata(dev);
 289
 290         *profile = pmf->current_profile;
 291         return 0;
 292 }
 293
 294 int amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf)
 295 {
 296         int mode;
 297
 298         switch (pmf->current_profile) {
 299         case PLATFORM_PROFILE_PERFORMANCE:
 300                 mode = POWER_MODE_PERFORMANCE;
 301                 break;
 302         case PLATFORM_PROFILE_BALANCED:
 303                 mode = POWER_MODE_BALANCED_POWER;
 304                 break;
 305         case PLATFORM_PROFILE_LOW_POWER:
 306                 mode = POWER_MODE_POWER_SAVER;
 307                 break;
 308         default:
 309                 dev_err(pmf->dev, "Unknown Platform Profile.\n");
 310                 return -EOPNOTSUPP;
 311         }
 312
 313         return mode;
 314 }
 315
 316 int amd_pmf_power_slider_update_event(struct amd_pmf_dev *dev)
 317 {
 318         u8 flag = 0;
 319         int mode;
 320         int src;
 321
 322         mode = amd_pmf_get_pprof_modes(dev);
 323         if (mode < 0)
 324                 return mode;
 325
 326         src = amd_pmf_get_power_source();
 327
 328         if (src == POWER_SOURCE_AC) {
 329                 switch (mode) {
 330                 case POWER_MODE_PERFORMANCE:
 331                         flag |= BIT(AC_BEST_PERF);
 332                         break;
 333                 case POWER_MODE_BALANCED_POWER:
 334                         flag |= BIT(AC_BETTER_PERF);
 335                         break;
 336                 case POWER_MODE_POWER_SAVER:
 337                         flag |= BIT(AC_BETTER_BATTERY);
 338                         break;
 339                 default:
 340                         dev_err(dev->dev, "unsupported platform profile\n");
 341                         return -EOPNOTSUPP;
 342                 }
 343
 344         } else if (src == POWER_SOURCE_DC) {
 345                 switch (mode) {
 346                 case POWER_MODE_PERFORMANCE:
 347                         flag |= BIT(DC_BEST_PERF);
 348                         break;
 349                 case POWER_MODE_BALANCED_POWER:
 350                         flag |= BIT(DC_BETTER_PERF);
 351                         break;
 352                 case POWER_MODE_POWER_SAVER:
 353                         flag |= BIT(DC_BATTERY_SAVER);
 354                         break;
 355                 default:
 356                         dev_err(dev->dev, "unsupported platform profile\n");
 357                         return -EOPNOTSUPP;
 358                 }
 359         }
 360
 361         apmf_os_power_slider_update(dev, flag);
 362
 363         return 0;
 364 }
 365
 366 static int amd_pmf_profile_set(struct device *dev,
 367                                enum platform_profile_option profile)
 368 {
 369         struct amd_pmf_dev *pmf = dev_get_drvdata(dev);
 370         int ret = 0;
 371
 372         pmf->current_profile = profile;
 373
 374         /* Notify EC about the slider position change */
 375         if (is_apmf_func_supported(pmf, APMF_FUNC_OS_POWER_SLIDER_UPDATE)) {
 376                 ret = amd_pmf_power_slider_update_event(pmf);
 377                 if (ret)
 378                         return ret;
 379         }
 380
 381         if (is_apmf_func_supported(pmf, APMF_FUNC_STATIC_SLIDER_GRANULAR)) {
 382                 ret = amd_pmf_set_sps_power_limits(pmf);
 383                 if (ret)
 384                         return ret;
 385         }
 386
 387         return 0;
 388 }
 389
 390 static int amd_pmf_profile_probe(void *drvdata, unsigned long *choices)
 391 {
 392         set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
 393         set_bit(PLATFORM_PROFILE_BALANCED, choices);
 394         set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
 395
 396         return 0;
 397 }
 398
 399 static const struct platform_profile_ops amd_pmf_profile_ops = {
 400         .probe = amd_pmf_profile_probe,
 401         .profile_get = amd_pmf_profile_get,
 402         .profile_set = amd_pmf_profile_set,
 403 };
 404
 405 int amd_pmf_init_sps(struct amd_pmf_dev *dev)
 406 {
 407         dev->current_profile = PLATFORM_PROFILE_BALANCED;
 408
 409         if (is_apmf_func_supported(dev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) {
 410                 if (dev->pmf_if_version == PMF_IF_V2) {
 411                         amd_pmf_load_defaults_sps_v2(dev);
 412                         amd_pmf_load_apts_defaults_sps_v2(dev);
 413                 } else {
 414                         amd_pmf_load_defaults_sps(dev);
 415                 }
 416
 417                 /* update SPS balanced power mode thermals */
 418                 amd_pmf_set_sps_power_limits(dev);
 419         }
 420
 421         /* Create platform_profile structure and register */
 422         dev->ppdev = devm_platform_profile_register(dev->dev, "amd-pmf", dev,
 423                                                     &amd_pmf_profile_ops);
 424         if (IS_ERR(dev->ppdev))
 425                 dev_err(dev->dev, "Failed to register SPS support, this is most likely an SBIOS bug: %ld\n",
 426                         PTR_ERR(dev->ppdev));
 427
 428         return PTR_ERR_OR_ZERO(dev->ppdev);
 429 }