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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * AMD Platform Management Framework Driver - Smart PC Capabilities
   4  *
   5  * Copyright (c) 2023, Advanced Micro Devices, Inc.
   6  * All Rights Reserved.
   7  *
   8  * Authors: Shyam Sundar S K <[email protected]>
   9  *          Patil Rajesh Reddy <[email protected]>
  10  */
  11
  12 #include <acpi/button.h>
  13 #include <linux/amd-pmf-io.h>
  14 #include <linux/power_supply.h>
  15 #include <linux/units.h>
  16 #include "pmf.h"
  17
  18 #ifdef CONFIG_AMD_PMF_DEBUG
  19 static const char *platform_type_as_str(u16 platform_type)
  20 {
  21         switch (platform_type) {
  22         case CLAMSHELL:
  23                 return "CLAMSHELL";
  24         case FLAT:
  25                 return "FLAT";
  26         case TENT:
  27                 return "TENT";
  28         case STAND:
  29                 return "STAND";
  30         case TABLET:
  31                 return "TABLET";
  32         case BOOK:
  33                 return "BOOK";
  34         case PRESENTATION:
  35                 return "PRESENTATION";
  36         case PULL_FWD:
  37                 return "PULL_FWD";
  38         default:
  39                 return "UNKNOWN";
  40         }
  41 }
  42
  43 static const char *laptop_placement_as_str(u16 device_state)
  44 {
  45         switch (device_state) {
  46         case ON_TABLE:
  47                 return "ON_TABLE";
  48         case ON_LAP_MOTION:
  49                 return "ON_LAP_MOTION";
  50         case IN_BAG:
  51                 return "IN_BAG";
  52         case OUT_OF_BAG:
  53                 return "OUT_OF_BAG";
  54         default:
  55                 return "UNKNOWN";
  56         }
  57 }
  58
  59 static const char *ta_slider_as_str(unsigned int state)
  60 {
  61         switch (state) {
  62         case TA_BEST_PERFORMANCE:
  63                 return "PERFORMANCE";
  64         case TA_BETTER_PERFORMANCE:
  65                 return "BALANCED";
  66         case TA_BEST_BATTERY:
  67                 return "POWER_SAVER";
  68         default:
  69                 return "Unknown TA Slider State";
  70         }
  71 }
  72
  73 void amd_pmf_dump_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
  74 {
  75         dev_dbg(dev->dev, "==== TA inputs START ====\n");
  76         dev_dbg(dev->dev, "Slider State: %s\n", ta_slider_as_str(in->ev_info.power_slider));
  77         dev_dbg(dev->dev, "Power Source: %s\n", amd_pmf_source_as_str(in->ev_info.power_source));
  78         dev_dbg(dev->dev, "Battery Percentage: %u\n", in->ev_info.bat_percentage);
  79         dev_dbg(dev->dev, "Designed Battery Capacity: %u\n", in->ev_info.bat_design);
  80         dev_dbg(dev->dev, "Fully Charged Capacity: %u\n", in->ev_info.full_charge_capacity);
  81         dev_dbg(dev->dev, "Drain Rate: %d\n", in->ev_info.drain_rate);
  82         dev_dbg(dev->dev, "Socket Power: %u\n", in->ev_info.socket_power);
  83         dev_dbg(dev->dev, "Skin Temperature: %u\n", in->ev_info.skin_temperature);
  84         dev_dbg(dev->dev, "Avg C0 Residency: %u\n", in->ev_info.avg_c0residency);
  85         dev_dbg(dev->dev, "Max C0 Residency: %u\n", in->ev_info.max_c0residency);
  86         dev_dbg(dev->dev, "GFX Busy: %u\n", in->ev_info.gfx_busy);
  87         dev_dbg(dev->dev, "LID State: %s\n", in->ev_info.lid_state ? "close" : "open");
  88         dev_dbg(dev->dev, "User Presence: %s\n", in->ev_info.user_present ? "Present" : "Away");
  89         dev_dbg(dev->dev, "Ambient Light: %d\n", in->ev_info.ambient_light);
  90         dev_dbg(dev->dev, "Platform type: %s\n", platform_type_as_str(in->ev_info.platform_type));
  91         dev_dbg(dev->dev, "Laptop placement: %s\n",
  92                 laptop_placement_as_str(in->ev_info.device_state));
  93         dev_dbg(dev->dev, "Custom BIOS input1: %u\n", in->ev_info.bios_input1);
  94         dev_dbg(dev->dev, "Custom BIOS input2: %u\n", in->ev_info.bios_input2);
  95         dev_dbg(dev->dev, "==== TA inputs END ====\n");
  96 }
  97 #else
  98 void amd_pmf_dump_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in) {}
  99 #endif
 100
 101 static void amd_pmf_get_custom_bios_inputs(struct amd_pmf_dev *pdev,
 102                                            struct ta_pmf_enact_table *in)
 103 {
 104         if (!pdev->req.pending_req)
 105                 return;
 106
 107         switch (pdev->req.pending_req) {
 108         case BIT(NOTIFY_CUSTOM_BIOS_INPUT1):
 109                 in->ev_info.bios_input1 = pdev->req.custom_policy[APMF_SMARTPC_CUSTOM_BIOS_INPUT1];
 110                 break;
 111         case BIT(NOTIFY_CUSTOM_BIOS_INPUT2):
 112                 in->ev_info.bios_input2 = pdev->req.custom_policy[APMF_SMARTPC_CUSTOM_BIOS_INPUT2];
 113                 break;
 114         default:
 115                 dev_dbg(pdev->dev, "Invalid preq for BIOS input: 0x%x\n", pdev->req.pending_req);
 116         }
 117
 118         /* Clear pending requests after handling */
 119         memset(&pdev->req, 0, sizeof(pdev->req));
 120 }
 121
 122 static void amd_pmf_get_c0_residency(u16 *core_res, size_t size, struct ta_pmf_enact_table *in)
 123 {
 124         u16 max, avg = 0;
 125         int i;
 126
 127         /* Get the avg and max C0 residency of all the cores */
 128         max = *core_res;
 129         for (i = 0; i < size; i++) {
 130                 avg += core_res[i];
 131                 if (core_res[i] > max)
 132                         max = core_res[i];
 133         }
 134         avg = DIV_ROUND_CLOSEST(avg, size);
 135         in->ev_info.avg_c0residency = avg;
 136         in->ev_info.max_c0residency = max;
 137 }
 138
 139 static void amd_pmf_get_smu_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
 140 {
 141         /* Get the updated metrics table data */
 142         memset(dev->buf, 0, dev->mtable_size);
 143         amd_pmf_send_cmd(dev, SET_TRANSFER_TABLE, 0, 7, NULL);
 144
 145         switch (dev->cpu_id) {
 146         case AMD_CPU_ID_PS:
 147                 memcpy(&dev->m_table, dev->buf, dev->mtable_size);
 148                 in->ev_info.socket_power = dev->m_table.apu_power + dev->m_table.dgpu_power;
 149                 in->ev_info.skin_temperature = dev->m_table.skin_temp;
 150                 in->ev_info.gfx_busy = dev->m_table.avg_gfx_activity;
 151                 amd_pmf_get_c0_residency(dev->m_table.avg_core_c0residency,
 152                                          ARRAY_SIZE(dev->m_table.avg_core_c0residency), in);
 153                 break;
 154         case PCI_DEVICE_ID_AMD_1AH_M20H_ROOT:
 155         case PCI_DEVICE_ID_AMD_1AH_M60H_ROOT:
 156                 memcpy(&dev->m_table_v2, dev->buf, dev->mtable_size);
 157                 in->ev_info.socket_power = dev->m_table_v2.apu_power + dev->m_table_v2.dgpu_power;
 158                 in->ev_info.skin_temperature = dev->m_table_v2.skin_temp;
 159                 in->ev_info.gfx_busy = dev->m_table_v2.gfx_activity;
 160                 amd_pmf_get_c0_residency(dev->m_table_v2.core_c0residency,
 161                                          ARRAY_SIZE(dev->m_table_v2.core_c0residency), in);
 162                 break;
 163         default:
 164                 dev_err(dev->dev, "Unsupported CPU id: 0x%x", dev->cpu_id);
 165         }
 166 }
 167
 168 static const char * const pmf_battery_supply_name[] = {
 169         "BATT",
 170         "BAT0",
 171 };
 172
 173 static int amd_pmf_get_battery_prop(enum power_supply_property prop)
 174 {
 175         union power_supply_propval value;
 176         struct power_supply *psy;
 177         int i, ret;
 178
 179         for (i = 0; i < ARRAY_SIZE(pmf_battery_supply_name); i++) {
 180                 psy = power_supply_get_by_name(pmf_battery_supply_name[i]);
 181                 if (!psy)
 182                         continue;
 183
 184                 ret = power_supply_get_property(psy, prop, &value);
 185                 if (ret) {
 186                         power_supply_put(psy);
 187                         return ret;
 188                 }
 189         }
 190
 191         return value.intval;
 192 }
 193
 194 static int amd_pmf_get_battery_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
 195 {
 196         int val;
 197
 198         val = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_PRESENT);
 199         if (val < 0)
 200                 return val;
 201         if (val != 1)
 202                 return -ENODEV;
 203
 204         in->ev_info.bat_percentage = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_CAPACITY);
 205         /* all values in mWh metrics */
 206         in->ev_info.bat_design = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN) /
 207                 MILLIWATT_PER_WATT;
 208         in->ev_info.full_charge_capacity = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_ENERGY_FULL) /
 209                 MILLIWATT_PER_WATT;
 210         in->ev_info.drain_rate = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_POWER_NOW) /
 211                 MILLIWATT_PER_WATT;
 212
 213         return 0;
 214 }
 215
 216 static int amd_pmf_get_slider_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
 217 {
 218         int val;
 219
 220         switch (dev->current_profile) {
 221         case PLATFORM_PROFILE_PERFORMANCE:
 222                 val = TA_BEST_PERFORMANCE;
 223                 break;
 224         case PLATFORM_PROFILE_BALANCED:
 225                 val = TA_BETTER_PERFORMANCE;
 226                 break;
 227         case PLATFORM_PROFILE_LOW_POWER:
 228                 val = TA_BEST_BATTERY;
 229                 break;
 230         default:
 231                 dev_err(dev->dev, "Unknown Platform Profile.\n");
 232                 return -EOPNOTSUPP;
 233         }
 234         in->ev_info.power_slider = val;
 235
 236         return 0;
 237 }
 238
 239 static void amd_pmf_get_sensor_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
 240 {
 241         struct amd_sfh_info sfh_info;
 242
 243         /* Get the latest information from SFH */
 244         in->ev_info.user_present = false;
 245
 246         /* Get ALS data */
 247         if (!amd_get_sfh_info(&sfh_info, MT_ALS))
 248                 in->ev_info.ambient_light = sfh_info.ambient_light;
 249         else
 250                 dev_dbg(dev->dev, "ALS is not enabled/detected\n");
 251
 252         /* get HPD data */
 253         if (!amd_get_sfh_info(&sfh_info, MT_HPD)) {
 254                 if (sfh_info.user_present == SFH_USER_PRESENT)
 255                         in->ev_info.user_present = true;
 256         } else {
 257                 dev_dbg(dev->dev, "HPD is not enabled/detected\n");
 258         }
 259
 260         /* Get SRA (Secondary Accelerometer) data */
 261         if (!amd_get_sfh_info(&sfh_info, MT_SRA)) {
 262                 in->ev_info.platform_type = sfh_info.platform_type;
 263                 in->ev_info.device_state = sfh_info.laptop_placement;
 264         } else {
 265                 dev_dbg(dev->dev, "SRA is not enabled/detected\n");
 266         }
 267 }
 268
 269 void amd_pmf_populate_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
 270 {
 271         /* TA side lid open is 1 and close is 0, hence the ! here */
 272         in->ev_info.lid_state = !acpi_lid_open();
 273         in->ev_info.power_source = amd_pmf_get_power_source();
 274         amd_pmf_get_smu_info(dev, in);
 275         amd_pmf_get_battery_info(dev, in);
 276         amd_pmf_get_slider_info(dev, in);
 277         amd_pmf_get_sensor_info(dev, in);
 278         amd_pmf_get_custom_bios_inputs(dev, in);
 279 }