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/* Copyright 2021 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "battery_smart.h"
#include "charge_state.h"
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "fan.h"
#include "hooks.h"
#include "host_command.h"
#include "tablet_mode.h"
#include "temp_sensor.h"
#include "thermal.h"
#include "util.h"
/* Console output macros */
#define CPUTS(outstr) cputs(CC_THERMAL, outstr)
#define CPRINTS(format, args...) cprints(CC_THERMAL, format, ##args)
const struct fan_conf fan_conf_0 = {
.flags = FAN_USE_RPM_MODE,
.ch = MFT_CH_0, /* Use MFT id to control fan */
.pgood_gpio = GPIO_S0_PGOOD,
.enable_gpio = -1,
};
const struct fan_rpm fan_rpm_0 = {
.rpm_min = 1000,
.rpm_start = 1000,
.rpm_max = 6500,
};
const struct fan_t fans[] = {
[FAN_CH_0] = {
.conf = &fan_conf_0,
.rpm = &fan_rpm_0,
},
};
BUILD_ASSERT(ARRAY_SIZE(fans) == FAN_CH_COUNT);
struct fan_step {
/*
* Sensor 1~4 trigger point, set -1 if we're not using this
* sensor to determine fan speed.
*/
int8_t on[TEMP_SENSOR_COUNT];
/*
* Sensor 1~4 trigger point, set -1 if we're not using this
* sensor to determine fan speed.
*/
int8_t off[TEMP_SENSOR_COUNT];
/* Fan 1~2 rpm */
uint16_t rpm[FAN_CH_COUNT];
};
static const struct fan_step fan_step_table[] = {
{
/* level 0 */
.on = { 51, 0, 44, -1, -1, -1 },
.off = { 99, 99, 99, -1, -1, -1 },
.rpm = { 0 },
},
{
/* level 1 */
.on = { 52, 0, 47, -1, -1, -1 },
.off = { 50, 99, 43, -1, -1, -1 },
.rpm = { 3000 },
},
{
/* level 2 */
.on = { 53, 0, 49, -1, -1, -1 },
.off = { 51, 99, 45, -1, -1, -1 },
.rpm = { 3400 },
},
{
/* level 3 */
.on = { 54, 0, 51, -1, -1, -1 },
.off = { 52, 99, 47, -1, -1, -1 },
.rpm = { 3800 },
},
{
/* level 4 */
.on = { 56, 50, 53, -1, -1, -1 },
.off = { 53, 47, 49, -1, -1, -1 },
.rpm = { 4100 },
},
{
/* level 5 */
.on = { 57, 52, 55, -1, -1, -1 },
.off = { 55, 49, 51, -1, -1, -1 },
.rpm = { 4400 },
},
{
/* level 6 */
.on = { 100, 100, 100, -1, -1, -1 },
.off = { 56, 51, 53, -1, -1, -1 },
.rpm = { 4900 },
},
};
#define NUM_FAN_LEVELS ARRAY_SIZE(fan_step_table)
BUILD_ASSERT(ARRAY_SIZE(fan_step_table) == ARRAY_SIZE(fan_step_table));
int fan_table_to_rpm(int fan, int *temp)
{
static int current_level;
static int prev_tmp[TEMP_SENSOR_COUNT];
int new_rpm = 0;
int i;
/*
* Compare the current and previous temperature, we have
* the three paths :
* 1. decreasing path. (check the release point)
* 2. increasing path. (check the trigger point)
* 3. invariant path. (return the current RPM)
*/
if (temp[TEMP_SENSOR_CHARGER] < prev_tmp[TEMP_SENSOR_CHARGER] ||
temp[TEMP_SENSOR_MEMORY] < prev_tmp[TEMP_SENSOR_MEMORY] ||
temp[TEMP_SENSOR_SOC] < prev_tmp[TEMP_SENSOR_SOC]) {
for (i = current_level; i > 0; i--) {
if (temp[TEMP_SENSOR_CHARGER] <
fan_step_table[i].off[TEMP_SENSOR_CHARGER] &&
temp[TEMP_SENSOR_MEMORY] <
fan_step_table[i].off[TEMP_SENSOR_MEMORY] &&
temp[TEMP_SENSOR_SOC] <
fan_step_table[i].off[TEMP_SENSOR_SOC]) {
current_level = i - 1;
} else
break;
}
} else if (temp[TEMP_SENSOR_CHARGER] > prev_tmp[TEMP_SENSOR_CHARGER] ||
temp[TEMP_SENSOR_MEMORY] > prev_tmp[TEMP_SENSOR_MEMORY] ||
temp[TEMP_SENSOR_SOC] > prev_tmp[TEMP_SENSOR_SOC]) {
for (i = current_level; i < NUM_FAN_LEVELS; i++) {
if ((temp[TEMP_SENSOR_CHARGER] >
fan_step_table[i].on[TEMP_SENSOR_CHARGER] &&
temp[TEMP_SENSOR_MEMORY] >
fan_step_table[i].on[TEMP_SENSOR_MEMORY]) ||
temp[TEMP_SENSOR_SOC] >
fan_step_table[i].on[TEMP_SENSOR_SOC]) {
current_level = i + 1;
} else
break;
}
}
if (current_level < 0)
current_level = 0;
if (current_level >= NUM_FAN_LEVELS)
current_level = NUM_FAN_LEVELS - 1;
for (i = 0; i < TEMP_SENSOR_COUNT; ++i)
prev_tmp[i] = temp[i];
new_rpm = fan_step_table[current_level].rpm[FAN_CH_0];
return new_rpm;
}
void board_override_fan_control(int fan, int *tmp)
{
if (chipset_in_state(CHIPSET_STATE_ON | CHIPSET_STATE_ANY_SUSPEND)) {
fan_set_rpm_mode(FAN_CH(fan), 1);
fan_set_rpm_target(FAN_CH(fan), fan_table_to_rpm(fan, tmp));
}
}
struct chg_curr_step {
int on;
int off;
int curr_ma;
};
static const struct chg_curr_step chg_curr_table[] = {
{ .on = 0, .off = 0, .curr_ma = 3566 },
{ .on = 66, .off = 65, .curr_ma = 2500 },
{ .on = 70, .off = 69, .curr_ma = 1500 },
};
#define NUM_CHG_CURRENT_LEVELS ARRAY_SIZE(chg_curr_table)
int charger_profile_override(struct charge_state_data *curr)
{
int rv;
int chg_temp_c;
int current;
int thermal_sensor_chrg;
static int current_level;
static int prev_tmp;
if (!(curr->batt.flags & BATT_FLAG_RESPONSIVE))
return 0;
current = curr->requested_current;
rv = temp_sensor_read(TEMP_SENSOR_CHARGER, &thermal_sensor_chrg);
chg_temp_c = K_TO_C(thermal_sensor_chrg);
if (rv != EC_SUCCESS)
return rv;
if (chipset_in_state(CHIPSET_STATE_ON)) {
if (chg_temp_c < prev_tmp) {
if ((chg_temp_c <= chg_curr_table[current_level].off) &&
(current_level > 0))
current_level -= 1;
} else if (chg_temp_c > prev_tmp) {
if ((chg_temp_c >=
chg_curr_table[current_level + 1].on) &&
(current_level < NUM_CHG_CURRENT_LEVELS - 1))
current_level += 1;
}
prev_tmp = chg_temp_c;
current = chg_curr_table[current_level].curr_ma;
curr->requested_current = MIN(curr->requested_current, current);
}
return 0;
}
enum ec_status charger_profile_override_get_param(uint32_t param,
uint32_t *value)
{
return EC_RES_INVALID_PARAM;
}
enum ec_status charger_profile_override_set_param(uint32_t param,
uint32_t value)
{
return EC_RES_INVALID_PARAM;
}
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