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/* Copyright 2016 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Charger profile override for fast charging
*/
#include "charger_profile_override.h"
#include "console.h"
#include "ec_commands.h"
#include "util.h"
#ifdef CONFIG_CMD_CHARGER_PROFILE_OVERRIDE_TEST
static int fast_charge_test_on;
static int test_flag_temp;
static int test_flag_vtg;
static int test_temp_c;
static int test_vtg_mV = -1;
#endif
static int fast_charging_allowed = 1;
int charger_profile_override_common(struct charge_state_data *curr,
const struct fast_charge_params *fast_chg_params,
const struct fast_charge_profile **prev_chg_prof_info,
int batt_vtg_max)
{
int i, voltage_range;
/* temp in 0.1 deg C */
int temp_c = curr->batt.temperature - 2731;
int temp_ranges = fast_chg_params->total_temp_ranges;
const struct fast_charge_profile *chg_profile_info =
fast_chg_params->chg_profile_info;
#ifdef CONFIG_CMD_CHARGER_PROFILE_OVERRIDE_TEST
if (fast_charge_test_on && test_vtg_mV != -1) {
temp_c = TEMPC_TENTHS_OF_DEG(test_temp_c);
curr->batt.voltage = test_vtg_mV;
if (test_flag_temp)
curr->batt.flags |= BATT_FLAG_BAD_TEMPERATURE;
else
curr->batt.flags &= BATT_FLAG_BAD_TEMPERATURE;
if (test_flag_vtg)
curr->batt.flags |= BATT_FLAG_BAD_VOLTAGE;
else
curr->batt.flags &= BATT_FLAG_BAD_VOLTAGE;
}
#endif
/*
* Determine temperature range.
* If temp reading was bad, use last range.
*/
if (!(curr->batt.flags & BATT_FLAG_BAD_TEMPERATURE)) {
while (chg_profile_info && temp_ranges) {
if (temp_c <= chg_profile_info->temp_c) {
*prev_chg_prof_info = chg_profile_info;
break;
}
chg_profile_info++;
temp_ranges--;
}
/* Invalid charge profile selected */
if (!chg_profile_info || !temp_ranges)
return -1;
}
/*
* If the battery voltage reading is bad or the battery voltage is
* greater than or equal to the lower limit or the battery voltage is
* not in the charger profile voltage range, consider battery has high
* voltage range so that we charge at lower current limit.
*/
voltage_range = CONFIG_CHARGER_PROFILE_VOLTAGE_RANGES - 1;
if (!(curr->batt.flags & BATT_FLAG_BAD_VOLTAGE)) {
for (i = 0; i < CONFIG_CHARGER_PROFILE_VOLTAGE_RANGES - 1;
i++) {
if (curr->batt.voltage <
fast_chg_params->voltage_mV[i]) {
voltage_range = i;
break;
}
}
}
/*
* If we are not charging or we aren't using fast charging profiles,
* then do not override desired current and voltage.
*/
if (curr->state != ST_CHARGE || !fast_charging_allowed)
return 0;
/*
* Okay, impose our custom will:
*/
curr->requested_current =
(*prev_chg_prof_info)->current_mA[voltage_range];
curr->requested_voltage = curr->requested_current ? batt_vtg_max : 0;
#ifdef CONFIG_CMD_CHARGER_PROFILE_OVERRIDE_TEST
if (fast_charge_test_on)
ccprintf("Fast charge profile i=%dmA, v=%dmV\n",
curr->requested_current, curr->requested_voltage);
#endif
return 0;
}
/* Customs options controllable by host command. */
#define PARAM_FASTCHARGE (CS_PARAM_CUSTOM_PROFILE_MIN + 0)
enum ec_status charger_profile_override_get_param(uint32_t param,
uint32_t *value)
{
if (param == PARAM_FASTCHARGE) {
*value = fast_charging_allowed;
return EC_RES_SUCCESS;
}
return EC_RES_INVALID_PARAM;
}
enum ec_status charger_profile_override_set_param(uint32_t param,
uint32_t value)
{
if (param == PARAM_FASTCHARGE) {
fast_charging_allowed = value;
return EC_RES_SUCCESS;
}
return EC_RES_INVALID_PARAM;
}
#ifdef CONFIG_CMD_CHARGER_PROFILE_OVERRIDE
static int command_fastcharge(int argc, char **argv)
{
if (argc > 1 && !parse_bool(argv[1], &fast_charging_allowed))
return EC_ERROR_PARAM1;
ccprintf("fastcharge %s\n", fast_charging_allowed ? "on" : "off");
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(fastcharge, command_fastcharge,
"[on|off]",
"Get or set fast charging profile");
#endif
/*
* Manipulate the temperature and voltage values and check if the correct
* fast charging profile is selected.
*/
#ifdef CONFIG_CMD_CHARGER_PROFILE_OVERRIDE_TEST
static int command_fastcharge_test(int argc, char **argv)
{
char *e;
int test_on;
if (argc > 1 && !parse_bool(argv[1], &test_on))
return EC_ERROR_PARAM2;
/* Check if only tuurn printf message on / off */
if (argc == 2) {
fast_charge_test_on = test_on;
test_vtg_mV = -1;
return EC_SUCCESS;
}
/* Validate the input parameters */
if ((test_on && argc != 6) || !test_on)
return EC_ERROR_PARAM_COUNT;
test_flag_temp = strtoi(argv[2], &e, 0);
if (*e || test_flag_temp > 1 || test_flag_temp < 0)
return EC_ERROR_PARAM3;
test_flag_vtg = strtoi(argv[3], &e, 0);
if (*e || test_flag_vtg > 1 || test_flag_vtg < 0)
return EC_ERROR_PARAM4;
test_temp_c = strtoi(argv[4], &e, 0);
if (*e)
return EC_ERROR_PARAM5;
test_vtg_mV = strtoi(argv[5], &e, 0);
if (*e || test_vtg_mV < 0) {
test_vtg_mV = -1;
return EC_ERROR_PARAM6;
}
fast_charge_test_on = 1;
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(fastchgtest, command_fastcharge_test,
"off | on tempflag[1|0] vtgflag[1|0] temp_c vtg_mV",
"Check if fastcharge profile works");
#endif
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