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// 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/amd-pmf-io.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, "User Presence: %s\n", in->ev_info.user_present ? "Present" : "Away");
dev_dbg(dev->dev, "Ambient Light: %d\n", in->ev_info.ambient_light);
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_c0_residency(u16 *core_res, size_t size, struct ta_pmf_enact_table *in)
{
u16 max, avg = 0;
int i;
/* Get the avg and max C0 residency of all the cores */
max = *core_res;
for (i = 0; i < size; i++) {
avg += core_res[i];
if (core_res[i] > max)
max = core_res[i];
}
avg = DIV_ROUND_CLOSEST(avg, size);
in->ev_info.avg_c0residency = avg;
in->ev_info.max_c0residency = max;
}
static void amd_pmf_get_smu_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
{
/* Get the updated metrics table data */
memset(dev->buf, 0, dev->mtable_size);
amd_pmf_send_cmd(dev, SET_TRANSFER_TABLE, 0, 7, NULL);
switch (dev->cpu_id) {
case AMD_CPU_ID_PS:
memcpy(&dev->m_table, dev->buf, dev->mtable_size);
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;
in->ev_info.gfx_busy = dev->m_table.avg_gfx_activity;
amd_pmf_get_c0_residency(dev->m_table.avg_core_c0residency,
ARRAY_SIZE(dev->m_table.avg_core_c0residency), in);
break;
case PCI_DEVICE_ID_AMD_1AH_M20H_ROOT:
case PCI_DEVICE_ID_AMD_1AH_M60H_ROOT:
memcpy(&dev->m_table_v2, dev->buf, dev->mtable_size);
in->ev_info.socket_power = dev->m_table_v2.apu_power + dev->m_table_v2.dgpu_power;
in->ev_info.skin_temperature = dev->m_table_v2.skin_temp;
in->ev_info.gfx_busy = dev->m_table_v2.gfx_activity;
amd_pmf_get_c0_residency(dev->m_table_v2.core_c0residency,
ARRAY_SIZE(dev->m_table_v2.core_c0residency), in);
break;
default:
dev_err(dev->dev, "Unsupported CPU id: 0x%x", dev->cpu_id);
}
}
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;
}
static void amd_pmf_get_sensor_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
{
struct amd_sfh_info sfh_info;
/* Get the latest information from SFH */
in->ev_info.user_present = false;
/* Get ALS data */
if (!amd_get_sfh_info(&sfh_info, MT_ALS))
in->ev_info.ambient_light = sfh_info.ambient_light;
else
dev_dbg(dev->dev, "ALS is not enabled/detected\n");
/* get HPD data */
if (!amd_get_sfh_info(&sfh_info, MT_HPD)) {
if (sfh_info.user_present == SFH_USER_PRESENT)
in->ev_info.user_present = true;
} else {
dev_dbg(dev->dev, "HPD is not enabled/detected\n");
}
}
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);
amd_pmf_get_sensor_info(dev, in);
}
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