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1// SPDX-License-Identifier: GPL-2.02/*3 * AMD Platform Management Framework Driver - Smart PC Capabilities4 *5 * Copyright (c) 2023, Advanced Micro Devices, Inc.6 * All Rights Reserved.7 *8 * Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>9 * Patil Rajesh Reddy <Patil.Reddy@amd.com>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_DEBUG19static const char *ta_slider_as_str(unsigned int state)20{21 switch (state) {22 case TA_BEST_PERFORMANCE:23 return "PERFORMANCE";24 case TA_BETTER_PERFORMANCE:25 return "BALANCED";26 case TA_BEST_BATTERY:27 return "POWER_SAVER";28 default:29 return "Unknown TA Slider State";30 }31}32 33void amd_pmf_dump_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)34{35 dev_dbg(dev->dev, "==== TA inputs START ====\n");36 dev_dbg(dev->dev, "Slider State: %s\n", ta_slider_as_str(in->ev_info.power_slider));37 dev_dbg(dev->dev, "Power Source: %s\n", amd_pmf_source_as_str(in->ev_info.power_source));38 dev_dbg(dev->dev, "Battery Percentage: %u\n", in->ev_info.bat_percentage);39 dev_dbg(dev->dev, "Designed Battery Capacity: %u\n", in->ev_info.bat_design);40 dev_dbg(dev->dev, "Fully Charged Capacity: %u\n", in->ev_info.full_charge_capacity);41 dev_dbg(dev->dev, "Drain Rate: %d\n", in->ev_info.drain_rate);42 dev_dbg(dev->dev, "Socket Power: %u\n", in->ev_info.socket_power);43 dev_dbg(dev->dev, "Skin Temperature: %u\n", in->ev_info.skin_temperature);44 dev_dbg(dev->dev, "Avg C0 Residency: %u\n", in->ev_info.avg_c0residency);45 dev_dbg(dev->dev, "Max C0 Residency: %u\n", in->ev_info.max_c0residency);46 dev_dbg(dev->dev, "GFX Busy: %u\n", in->ev_info.gfx_busy);47 dev_dbg(dev->dev, "LID State: %s\n", in->ev_info.lid_state ? "close" : "open");48 dev_dbg(dev->dev, "User Presence: %s\n", in->ev_info.user_present ? "Present" : "Away");49 dev_dbg(dev->dev, "Ambient Light: %d\n", in->ev_info.ambient_light);50 dev_dbg(dev->dev, "==== TA inputs END ====\n");51}52#else53void amd_pmf_dump_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in) {}54#endif55 56static void amd_pmf_get_c0_residency(u16 *core_res, size_t size, struct ta_pmf_enact_table *in)57{58 u16 max, avg = 0;59 int i;60 61 /* Get the avg and max C0 residency of all the cores */62 max = *core_res;63 for (i = 0; i < size; i++) {64 avg += core_res[i];65 if (core_res[i] > max)66 max = core_res[i];67 }68 avg = DIV_ROUND_CLOSEST(avg, size);69 in->ev_info.avg_c0residency = avg;70 in->ev_info.max_c0residency = max;71}72 73static void amd_pmf_get_smu_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)74{75 /* Get the updated metrics table data */76 memset(dev->buf, 0, dev->mtable_size);77 amd_pmf_send_cmd(dev, SET_TRANSFER_TABLE, 0, 7, NULL);78 79 switch (dev->cpu_id) {80 case AMD_CPU_ID_PS:81 memcpy(&dev->m_table, dev->buf, dev->mtable_size);82 in->ev_info.socket_power = dev->m_table.apu_power + dev->m_table.dgpu_power;83 in->ev_info.skin_temperature = dev->m_table.skin_temp;84 in->ev_info.gfx_busy = dev->m_table.avg_gfx_activity;85 amd_pmf_get_c0_residency(dev->m_table.avg_core_c0residency,86 ARRAY_SIZE(dev->m_table.avg_core_c0residency), in);87 break;88 case PCI_DEVICE_ID_AMD_1AH_M20H_ROOT:89 case PCI_DEVICE_ID_AMD_1AH_M60H_ROOT:90 memcpy(&dev->m_table_v2, dev->buf, dev->mtable_size);91 in->ev_info.socket_power = dev->m_table_v2.apu_power + dev->m_table_v2.dgpu_power;92 in->ev_info.skin_temperature = dev->m_table_v2.skin_temp;93 in->ev_info.gfx_busy = dev->m_table_v2.gfx_activity;94 amd_pmf_get_c0_residency(dev->m_table_v2.core_c0residency,95 ARRAY_SIZE(dev->m_table_v2.core_c0residency), in);96 break;97 default:98 dev_err(dev->dev, "Unsupported CPU id: 0x%x", dev->cpu_id);99 }100}101 102static const char * const pmf_battery_supply_name[] = {103 "BATT",104 "BAT0",105};106 107static int amd_pmf_get_battery_prop(enum power_supply_property prop)108{109 union power_supply_propval value;110 struct power_supply *psy;111 int i, ret;112 113 for (i = 0; i < ARRAY_SIZE(pmf_battery_supply_name); i++) {114 psy = power_supply_get_by_name(pmf_battery_supply_name[i]);115 if (!psy)116 continue;117 118 ret = power_supply_get_property(psy, prop, &value);119 if (ret) {120 power_supply_put(psy);121 return ret;122 }123 }124 125 return value.intval;126}127 128static int amd_pmf_get_battery_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)129{130 int val;131 132 val = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_PRESENT);133 if (val < 0)134 return val;135 if (val != 1)136 return -ENODEV;137 138 in->ev_info.bat_percentage = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_CAPACITY);139 /* all values in mWh metrics */140 in->ev_info.bat_design = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN) /141 MILLIWATT_PER_WATT;142 in->ev_info.full_charge_capacity = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_ENERGY_FULL) /143 MILLIWATT_PER_WATT;144 in->ev_info.drain_rate = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_POWER_NOW) /145 MILLIWATT_PER_WATT;146 147 return 0;148}149 150static int amd_pmf_get_slider_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)151{152 int val;153 154 switch (dev->current_profile) {155 case PLATFORM_PROFILE_PERFORMANCE:156 val = TA_BEST_PERFORMANCE;157 break;158 case PLATFORM_PROFILE_BALANCED:159 val = TA_BETTER_PERFORMANCE;160 break;161 case PLATFORM_PROFILE_LOW_POWER:162 val = TA_BEST_BATTERY;163 break;164 default:165 dev_err(dev->dev, "Unknown Platform Profile.\n");166 return -EOPNOTSUPP;167 }168 in->ev_info.power_slider = val;169 170 return 0;171}172 173static void amd_pmf_get_sensor_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)174{175 struct amd_sfh_info sfh_info;176 177 /* Get the latest information from SFH */178 in->ev_info.user_present = false;179 180 /* Get ALS data */181 if (!amd_get_sfh_info(&sfh_info, MT_ALS))182 in->ev_info.ambient_light = sfh_info.ambient_light;183 else184 dev_dbg(dev->dev, "ALS is not enabled/detected\n");185 186 /* get HPD data */187 if (!amd_get_sfh_info(&sfh_info, MT_HPD)) {188 if (sfh_info.user_present == SFH_USER_PRESENT)189 in->ev_info.user_present = true;190 } else {191 dev_dbg(dev->dev, "HPD is not enabled/detected\n");192 }193}194 195void amd_pmf_populate_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)196{197 /* TA side lid open is 1 and close is 0, hence the ! here */198 in->ev_info.lid_state = !acpi_lid_open();199 in->ev_info.power_source = amd_pmf_get_power_source();200 amd_pmf_get_smu_info(dev, in);201 amd_pmf_get_battery_info(dev, in);202 amd_pmf_get_slider_info(dev, in);203 amd_pmf_get_sensor_info(dev, in);204}205