diff options
Diffstat (limited to 'drivers/platform/x86/amd/pmf/spc.c')
| -rw-r--r-- | drivers/platform/x86/amd/pmf/spc.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/platform/x86/amd/pmf/spc.c b/drivers/platform/x86/amd/pmf/spc.c new file mode 100644 index 000000000000..a0423942f771 --- /dev/null +++ b/drivers/platform/x86/amd/pmf/spc.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * AMD Platform Management Framework Driver - Smart PC Capabilities + * + * Copyright (c) 2023, Advanced Micro Devices, Inc. + * All Rights Reserved. + * + * Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> + * Patil Rajesh Reddy <Patil.Reddy@amd.com> + */ + +#include <acpi/button.h> +#include <linux/power_supply.h> +#include <linux/units.h> +#include "pmf.h" + +#ifdef CONFIG_AMD_PMF_DEBUG +static const char *ta_slider_as_str(unsigned int state) +{ + switch (state) { + case TA_BEST_PERFORMANCE: + return "PERFORMANCE"; + case TA_BETTER_PERFORMANCE: + return "BALANCED"; + case TA_BEST_BATTERY: + return "POWER_SAVER"; + default: + return "Unknown TA Slider State"; + } +} + +void amd_pmf_dump_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in) +{ + dev_dbg(dev->dev, "==== TA inputs START ====\n"); + dev_dbg(dev->dev, "Slider State: %s\n", ta_slider_as_str(in->ev_info.power_slider)); + dev_dbg(dev->dev, "Power Source: %s\n", amd_pmf_source_as_str(in->ev_info.power_source)); + dev_dbg(dev->dev, "Battery Percentage: %u\n", in->ev_info.bat_percentage); + dev_dbg(dev->dev, "Designed Battery Capacity: %u\n", in->ev_info.bat_design); + dev_dbg(dev->dev, "Fully Charged Capacity: %u\n", in->ev_info.full_charge_capacity); + dev_dbg(dev->dev, "Drain Rate: %d\n", in->ev_info.drain_rate); + dev_dbg(dev->dev, "Socket Power: %u\n", in->ev_info.socket_power); + dev_dbg(dev->dev, "Skin Temperature: %u\n", in->ev_info.skin_temperature); + dev_dbg(dev->dev, "Avg C0 Residency: %u\n", in->ev_info.avg_c0residency); + dev_dbg(dev->dev, "Max C0 Residency: %u\n", in->ev_info.max_c0residency); + dev_dbg(dev->dev, "GFX Busy: %u\n", in->ev_info.gfx_busy); + dev_dbg(dev->dev, "LID State: %s\n", in->ev_info.lid_state ? "close" : "open"); + dev_dbg(dev->dev, "==== TA inputs END ====\n"); +} +#else +void amd_pmf_dump_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in) {} +#endif + +static void amd_pmf_get_smu_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in) +{ + u16 max, avg = 0; + int i; + + memset(dev->buf, 0, sizeof(dev->m_table)); + amd_pmf_send_cmd(dev, SET_TRANSFER_TABLE, 0, 7, NULL); + memcpy(&dev->m_table, dev->buf, sizeof(dev->m_table)); + + in->ev_info.socket_power = dev->m_table.apu_power + dev->m_table.dgpu_power; + in->ev_info.skin_temperature = dev->m_table.skin_temp; + + /* Get the avg and max C0 residency of all the cores */ + max = dev->m_table.avg_core_c0residency[0]; + for (i = 0; i < ARRAY_SIZE(dev->m_table.avg_core_c0residency); i++) { + avg += dev->m_table.avg_core_c0residency[i]; + if (dev->m_table.avg_core_c0residency[i] > max) + max = dev->m_table.avg_core_c0residency[i]; + } + + avg = DIV_ROUND_CLOSEST(avg, ARRAY_SIZE(dev->m_table.avg_core_c0residency)); + in->ev_info.avg_c0residency = avg; + in->ev_info.max_c0residency = max; + in->ev_info.gfx_busy = dev->m_table.avg_gfx_activity; +} + +static const char * const pmf_battery_supply_name[] = { + "BATT", + "BAT0", +}; + +static int amd_pmf_get_battery_prop(enum power_supply_property prop) +{ + union power_supply_propval value; + struct power_supply *psy; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(pmf_battery_supply_name); i++) { + psy = power_supply_get_by_name(pmf_battery_supply_name[i]); + if (!psy) + continue; + + ret = power_supply_get_property(psy, prop, &value); + if (ret) { + power_supply_put(psy); + return ret; + } + } + + return value.intval; +} + +static int amd_pmf_get_battery_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in) +{ + int val; + + val = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_PRESENT); + if (val < 0) + return val; + if (val != 1) + return -ENODEV; + + in->ev_info.bat_percentage = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_CAPACITY); + /* all values in mWh metrics */ + in->ev_info.bat_design = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN) / + MILLIWATT_PER_WATT; + in->ev_info.full_charge_capacity = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_ENERGY_FULL) / + MILLIWATT_PER_WATT; + in->ev_info.drain_rate = amd_pmf_get_battery_prop(POWER_SUPPLY_PROP_POWER_NOW) / + MILLIWATT_PER_WATT; + + return 0; +} + +static int amd_pmf_get_slider_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in) +{ + int val; + + switch (dev->current_profile) { + case PLATFORM_PROFILE_PERFORMANCE: + val = TA_BEST_PERFORMANCE; + break; + case PLATFORM_PROFILE_BALANCED: + val = TA_BETTER_PERFORMANCE; + break; + case PLATFORM_PROFILE_LOW_POWER: + val = TA_BEST_BATTERY; + break; + default: + dev_err(dev->dev, "Unknown Platform Profile.\n"); + return -EOPNOTSUPP; + } + in->ev_info.power_slider = val; + + return 0; +} + +void amd_pmf_populate_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in) +{ + /* TA side lid open is 1 and close is 0, hence the ! here */ + in->ev_info.lid_state = !acpi_lid_open(); + in->ev_info.power_source = amd_pmf_get_power_source(); + amd_pmf_get_smu_info(dev, in); + amd_pmf_get_battery_info(dev, in); + amd_pmf_get_slider_info(dev, in); +} |