/* Copyright (c) 2014 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. */ #include "adc.h" #include "battery.h" #include "charge_manager.h" #include "charge_ramp.h" #include "charger.h" #include "console.h" #include "gpio.h" #include "hooks.h" #include "host_command.h" #include "system.h" #include "timer.h" #include "usb_pd.h" #include "util.h" #define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args) #define POWER(charge_port) ((charge_port.current) * (charge_port.voltage)) /* Timeout for delayed override power swap, allow for 500ms extra */ #define POWER_SWAP_TIMEOUT (PD_T_SRC_RECOVER_MAX + PD_T_SRC_TURN_ON + \ PD_T_SAFE_0V + 500 * MSEC) /* Charge supplier priority: lower number indicates higher priority. */ test_mockable const int supplier_priority[] = { [CHARGE_SUPPLIER_PD] = 0, [CHARGE_SUPPLIER_TYPEC] = 1, [CHARGE_SUPPLIER_PROPRIETARY] = 1, [CHARGE_SUPPLIER_BC12_DCP] = 1, [CHARGE_SUPPLIER_BC12_CDP] = 2, [CHARGE_SUPPLIER_BC12_SDP] = 3, [CHARGE_SUPPLIER_OTHER] = 3, [CHARGE_SUPPLIER_VBUS] = 4 }; BUILD_ASSERT(ARRAY_SIZE(supplier_priority) == CHARGE_SUPPLIER_COUNT); /* Keep track of available charge for each charge port. */ static struct charge_port_info available_charge[CHARGE_SUPPLIER_COUNT] [CONFIG_USB_PD_PORT_COUNT]; /* Keep track of when the supplier on each port is registered. */ static timestamp_t registration_time[CONFIG_USB_PD_PORT_COUNT]; /* * Charge current ceiling (mA) for ports. This can be set to temporarily limit * the charge pulled from a port, without influencing the port selection logic. * The ceiling can be set independently from several requestors, with the * minimum ceiling taking effect. */ static int charge_ceil[CONFIG_USB_PD_PORT_COUNT][CEIL_REQUESTOR_COUNT]; /* Dual-role capability of attached partner port */ static enum dualrole_capabilities dualrole_capability[CONFIG_USB_PD_PORT_COUNT]; #ifdef CONFIG_USB_PD_LOGGING /* Mark port as dirty when making changes, for later logging */ static int save_log[CONFIG_USB_PD_PORT_COUNT]; #endif /* Store current state of port enable / charge current. */ static int charge_port = CHARGE_PORT_NONE; static int charge_current = CHARGE_CURRENT_UNINITIALIZED; static int charge_current_uncapped = CHARGE_CURRENT_UNINITIALIZED; static int charge_voltage; static int charge_supplier = CHARGE_SUPPLIER_NONE; static int override_port = OVERRIDE_OFF; static int delayed_override_port = OVERRIDE_OFF; static timestamp_t delayed_override_deadline; enum charge_manager_change_type { CHANGE_CHARGE, CHANGE_DUALROLE, }; /** * In certain cases we need to override the default behavior of not charging * from non-dedicated chargers. If the system is in RO and locked, we have no * way of determining the actual dualrole capability of the charger because * PD communication is not allowed, so we must assume that it is dedicated. * Also, if no battery is present, the charger may be our only source of power, * so again we must assume that the charger is dedicated. */ static int charge_manager_spoof_dualrole_capability(void) { return (system_get_image_copy() == SYSTEM_IMAGE_RO && system_is_locked()) || (battery_is_present() != BP_YES); } /** * Initialize available charge. Run before board init, so board init can * initialize data, if needed. */ static void charge_manager_init(void) { int i, j; int spoof_capability = charge_manager_spoof_dualrole_capability(); for (i = 0; i < CONFIG_USB_PD_PORT_COUNT; ++i) { for (j = 0; j < CHARGE_SUPPLIER_COUNT; ++j) { available_charge[j][i].current = CHARGE_CURRENT_UNINITIALIZED; available_charge[j][i].voltage = CHARGE_VOLTAGE_UNINITIALIZED; } for (j = 0; j < CEIL_REQUESTOR_COUNT; ++j) charge_ceil[i][j] = CHARGE_CEIL_NONE; dualrole_capability[i] = spoof_capability ? CAP_DEDICATED : CAP_UNKNOWN; } } DECLARE_HOOK(HOOK_INIT, charge_manager_init, HOOK_PRIO_DEFAULT-1); /** * Returns 1 if all ports + suppliers have reported in with some initial charge, * 0 otherwise. */ static int charge_manager_is_seeded(void) { /* Once we're seeded, we don't need to check again. */ static int is_seeded; int i, j; if (is_seeded) return 1; for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i) for (j = 0; j < CONFIG_USB_PD_PORT_COUNT; ++j) if (available_charge[i][j].current == CHARGE_CURRENT_UNINITIALIZED || available_charge[i][j].voltage == CHARGE_VOLTAGE_UNINITIALIZED) return 0; is_seeded = 1; return 1; } #ifndef TEST_BUILD /** * Fills passed power_info structure with current info about the passed port. */ static void charge_manager_fill_power_info(int port, struct ec_response_usb_pd_power_info *r) { int sup = CHARGE_SUPPLIER_NONE; int i; /* Determine supplier information to show. */ if (port == charge_port) sup = charge_supplier; else /* Find highest priority supplier */ for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i) if (available_charge[i][port].current > 0 && available_charge[i][port].voltage > 0 && (sup == CHARGE_SUPPLIER_NONE || supplier_priority[i] < supplier_priority[sup] || (supplier_priority[i] == supplier_priority[sup] && POWER(available_charge[i][port]) > POWER(available_charge[sup] [port])))) sup = i; /* Fill in power role */ if (charge_port == port) r->role = USB_PD_PORT_POWER_SINK; else if (pd_is_connected(port) && pd_get_role(port) == PD_ROLE_SOURCE) r->role = USB_PD_PORT_POWER_SOURCE; else if (sup != CHARGE_SUPPLIER_NONE) r->role = USB_PD_PORT_POWER_SINK_NOT_CHARGING; else r->role = USB_PD_PORT_POWER_DISCONNECTED; /* Is port partner dual-role capable */ r->dualrole = (dualrole_capability[port] == CAP_DUALROLE); if (sup == CHARGE_SUPPLIER_NONE || r->role == USB_PD_PORT_POWER_SOURCE) { r->type = USB_CHG_TYPE_NONE; r->meas.voltage_max = 0; r->meas.voltage_now = r->role == USB_PD_PORT_POWER_SOURCE ? 5000 : 0; r->meas.current_max = 0; r->max_power = 0; } else { #if defined(HAS_TASK_CHG_RAMP) || defined(CONFIG_CHARGE_RAMP_HW) /* Read ramped current if active charging port */ int use_ramp_current = (charge_port == port); #else const int use_ramp_current = 0; #endif switch (sup) { case CHARGE_SUPPLIER_PD: r->type = USB_CHG_TYPE_PD; break; case CHARGE_SUPPLIER_TYPEC: r->type = USB_CHG_TYPE_C; break; case CHARGE_SUPPLIER_PROPRIETARY: r->type = USB_CHG_TYPE_PROPRIETARY; break; case CHARGE_SUPPLIER_BC12_DCP: r->type = USB_CHG_TYPE_BC12_DCP; break; case CHARGE_SUPPLIER_BC12_CDP: r->type = USB_CHG_TYPE_BC12_CDP; break; case CHARGE_SUPPLIER_BC12_SDP: r->type = USB_CHG_TYPE_BC12_SDP; break; case CHARGE_SUPPLIER_VBUS: r->type = USB_CHG_TYPE_VBUS; break; default: r->type = USB_CHG_TYPE_OTHER; } r->meas.voltage_max = available_charge[sup][port].voltage; /* * Report unknown charger CHARGE_DETECT_DELAY after supplier * change since PD negotiation may take time. */ if (get_time().val < registration_time[port].val + CHARGE_DETECT_DELAY) r->type = USB_CHG_TYPE_UNKNOWN; if (use_ramp_current) { /* Current limit is output of ramp module */ r->meas.current_lim = chg_ramp_get_current_limit(); /* * If ramp is allowed, then the max current depends * on if ramp is stable. If ramp is stable, then * max current is same as input current limit. If * ramp is not stable, then we report the maximum * current we could ramp up to for this supplier. * If ramp is not allowed, max current is just the * available charge current. */ if (board_is_ramp_allowed(sup)) { r->meas.current_max = chg_ramp_is_stable() ? r->meas.current_lim : board_get_ramp_current_limit( sup, available_charge[sup][port].current); } else { r->meas.current_max = available_charge[sup][port].current; } r->max_power = r->meas.current_max * r->meas.voltage_max; } else { r->meas.current_max = r->meas.current_lim = available_charge[sup][port].current; r->max_power = POWER(available_charge[sup][port]); } /* * If we are sourcing power, or sinking but not charging, then * VBUS must be 5V. If we are charging, then read VBUS ADC. */ if (r->role == USB_PD_PORT_POWER_SINK_NOT_CHARGING) r->meas.voltage_now = 5000; else if (ADC_VBUS >= 0) r->meas.voltage_now = adc_read_channel(ADC_VBUS); else /* No VBUS ADC channel - voltage is unknown */ r->meas.voltage_now = 0; } } #endif /* TEST_BUILD */ #ifdef CONFIG_USB_PD_LOGGING /** * Saves a power state log entry with the current info about the passed port. */ void charge_manager_save_log(int port) { uint16_t flags = 0; struct ec_response_usb_pd_power_info pinfo; if (port < 0 || port >= CONFIG_USB_PD_PORT_COUNT) return; save_log[port] = 0; charge_manager_fill_power_info(port, &pinfo); /* Flags are stored in the data field */ if (port == override_port) flags |= CHARGE_FLAGS_OVERRIDE; if (port == delayed_override_port) flags |= CHARGE_FLAGS_DELAYED_OVERRIDE; flags |= pinfo.role | (pinfo.type << CHARGE_FLAGS_TYPE_SHIFT) | (pinfo.dualrole ? CHARGE_FLAGS_DUAL_ROLE : 0); pd_log_event(PD_EVENT_MCU_CHARGE, PD_LOG_PORT_SIZE(port, sizeof(pinfo.meas)), flags, &pinfo.meas); } #endif /* CONFIG_USB_PD_LOGGING */ /** * Attempt to switch to power source on port if applicable. */ static void charge_manager_switch_to_source(int port) { if (port < 0 || port >= CONFIG_USB_PD_PORT_COUNT) return; /* If connected to dual-role device, then ask for a swap */ if (dualrole_capability[port] == CAP_DUALROLE && pd_get_role(port) == PD_ROLE_SINK) pd_request_power_swap(port); } /** * Return the computed charge ceiling for a port, which represents the * minimum ceiling among all valid requestors. * * @param port Charge port. * @return Charge ceiling (mA) or CHARGE_CEIL_NONE. */ static int charge_manager_get_ceil(int port) { int ceil = CHARGE_CEIL_NONE; int val, i; ASSERT(port >= 0 && port < CONFIG_USB_PD_PORT_COUNT); for (i = 0; i < CEIL_REQUESTOR_COUNT; ++i) { val = charge_ceil[port][i]; if (val != CHARGE_CEIL_NONE && (ceil == CHARGE_CEIL_NONE || val < ceil)) ceil = val; } return ceil; } /** * Select the 'best' charge port, as defined by the supplier heirarchy and the * ability of the port to provide power. */ static void charge_manager_get_best_charge_port(int *new_port, int *new_supplier) { int supplier = CHARGE_SUPPLIER_NONE; int port = CHARGE_PORT_NONE; int best_port_power = -1, candidate_port_power; int i, j; /* Skip port selection on OVERRIDE_DONT_CHARGE. */ if (override_port != OVERRIDE_DONT_CHARGE) { /* * Charge supplier selection logic: * 1. Prefer higher priority supply. * 2. Prefer higher power over lower in case priority is tied. * 3. Prefer current charge port over new port in case (1) * and (2) are tied. * available_charge can be changed at any time by other tasks, * so make no assumptions about its consistency. */ for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i) for (j = 0; j < CONFIG_USB_PD_PORT_COUNT; ++j) { /* * Skip this supplier if there is no * available charge. */ if (available_charge[i][j].current == 0 || available_charge[i][j].voltage == 0) continue; /* * Don't select this port if we have a * charge on another override port. */ if (override_port != OVERRIDE_OFF && override_port == port && override_port != j) continue; #ifndef CONFIG_CHARGE_MANAGER_DRP_CHARGING /* * Don't charge from a dual-role port unless * it is our override port. */ if (dualrole_capability[j] != CAP_DEDICATED && override_port != j) continue; #endif candidate_port_power = POWER(available_charge[i][j]); /* Select if no supplier chosen yet. */ if (supplier == CHARGE_SUPPLIER_NONE || /* ..or if supplier priority is higher. */ supplier_priority[i] < supplier_priority[supplier] || /* ..or if this is our override port. */ (j == override_port && port != override_port) || /* ..or if priority is tied and.. */ (supplier_priority[i] == supplier_priority[supplier] && /* candidate port can supply more power or.. */ (candidate_port_power > best_port_power || /* * candidate port is the active port and can * supply the same amount of power. */ (candidate_port_power == best_port_power && charge_port == j)))) { supplier = i; port = j; best_port_power = candidate_port_power; } } } *new_port = port; *new_supplier = supplier; } /** * Charge manager refresh -- responsible for selecting the active charge port * and charge power. Called as a deferred task. */ static void charge_manager_refresh(void) { int new_supplier, new_port; int new_charge_current, new_charge_current_uncapped; int new_charge_voltage, i; int updated_new_port = CHARGE_PORT_NONE; int updated_old_port = CHARGE_PORT_NONE; int ceil; /* Hunt for an acceptable charge port */ while (1) { charge_manager_get_best_charge_port(&new_port, &new_supplier); /* * If the port or supplier changed, make an attempt to switch to * the port. We will re-set the active port on a supplier change * to give the board-level function another chance to reject * the port, for example, if the port has become a charge * source. */ if ((new_port == charge_port && new_supplier == charge_supplier) || board_set_active_charge_port(new_port) == EC_SUCCESS) break; /* 'Dont charge' request must be accepted */ ASSERT(new_port != CHARGE_PORT_NONE); /* * Zero the available charge on the rejected port so that * it is no longer chosen. */ for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i) available_charge[i][new_port].current = 0; } /* * Clear override if it wasn't selected as the 'best' port -- it means * that no charge is available on the port, or the port was rejected. */ if (override_port >= 0 && override_port != new_port) override_port = OVERRIDE_OFF; if (new_supplier == CHARGE_SUPPLIER_NONE) { new_charge_current = 0; new_charge_current_uncapped = 0; new_charge_voltage = 0; } else { new_charge_current_uncapped = available_charge[new_supplier][new_port].current; #ifdef CONFIG_CHARGE_RAMP_HW /* * Allow to set the maximum current value, so the hardware can * know the range of acceptable current values for its ramping. */ if (board_is_ramp_allowed(new_supplier)) new_charge_current_uncapped = board_get_ramp_current_limit(new_supplier, new_charge_current_uncapped); #endif /* CONFIG_CHARGE_RAMP_HW */ /* Enforce port charge ceiling. */ ceil = charge_manager_get_ceil(new_port); if (ceil != CHARGE_CEIL_NONE) new_charge_current = MIN(ceil, new_charge_current_uncapped); else new_charge_current = new_charge_current_uncapped; new_charge_voltage = available_charge[new_supplier][new_port].voltage; } /* Change the charge limit + charge port/supplier if modified. */ if (new_port != charge_port || new_charge_current != charge_current || new_supplier != charge_supplier) { #ifdef HAS_TASK_CHG_RAMP chg_ramp_charge_supplier_change( new_port, new_supplier, new_charge_current, registration_time[new_port]); #else #ifdef CONFIG_CHARGE_RAMP_HW /* Enable or disable charge ramp */ charger_set_hw_ramp(board_is_ramp_allowed(new_supplier)); #endif board_set_charge_limit(new_charge_current); #endif CPRINTS("CL: p%d s%d i%d v%d", new_port, new_supplier, new_charge_current, new_charge_voltage); } /* * Signal new power request only if the port changed, the voltage * on the same port changed, or the actual uncapped current * on the same port changed (don't consider ceil). */ if (new_port != CHARGE_PORT_NONE && (new_port != charge_port || new_charge_current_uncapped != charge_current_uncapped || new_charge_voltage != charge_voltage)) updated_new_port = new_port; /* If charge port changed, cleanup old port */ if (charge_port != new_port && charge_port != CHARGE_PORT_NONE) { /* Check if need power swap */ charge_manager_switch_to_source(charge_port); /* Signal new power request on old port */ updated_old_port = charge_port; } /* Update globals to reflect current state. */ charge_current = new_charge_current; charge_current_uncapped = new_charge_current_uncapped; charge_voltage = new_charge_voltage; charge_supplier = new_supplier; charge_port = new_port; #ifdef CONFIG_USB_PD_LOGGING /* * Write a log under the following conditions: * 1. A port becomes active or * 2. A port becomes inactive or * 3. The active charge port power limit changes or * 4. Any supplier change on an inactive port */ if (updated_new_port != CHARGE_PORT_NONE) save_log[updated_new_port] = 1; /* Don't log non-meaningful changes on charge port */ else if (charge_port != CHARGE_PORT_NONE) save_log[charge_port] = 0; if (updated_old_port != CHARGE_PORT_NONE) save_log[updated_old_port] = 1; for (i = 0; i < CONFIG_USB_PD_PORT_COUNT; ++i) if (save_log[i]) charge_manager_save_log(i); #endif /* New power requests must be set only after updating the globals. */ if (updated_new_port != CHARGE_PORT_NONE) pd_set_new_power_request(updated_new_port); if (updated_old_port != CHARGE_PORT_NONE) pd_set_new_power_request(updated_old_port); } DECLARE_DEFERRED(charge_manager_refresh); /** * Called when charge override times out waiting for power swap. */ static void charge_override_timeout(void) { delayed_override_port = OVERRIDE_OFF; pd_send_host_event(PD_EVENT_POWER_CHANGE); } DECLARE_DEFERRED(charge_override_timeout); /** * Called CHARGE_DETECT_DELAY after the most recent charge change on a port. */ static void charger_detect_debounced(void) { /* Inform host that charger detection is debounced. */ pd_send_host_event(PD_EVENT_POWER_CHANGE); } DECLARE_DEFERRED(charger_detect_debounced); static void charge_manager_make_change(enum charge_manager_change_type change, int supplier, int port, struct charge_port_info *charge) { int i; int clear_override = 0; /* Determine if this is a change which can affect charge status */ switch (change) { case CHANGE_CHARGE: /* Ignore changes where charge is identical */ if (available_charge[supplier][port].current == charge->current && available_charge[supplier][port].voltage == charge->voltage) return; if (charge->current > 0 && available_charge[supplier][port].current == 0) clear_override = 1; #ifdef CONFIG_USB_PD_LOGGING save_log[port] = 1; #endif break; case CHANGE_DUALROLE: /* * Ignore all except for transition to non-dualrole, * which may occur some time after we see a charge */ #ifndef CONFIG_CHARGE_MANAGER_DRP_CHARGING if (dualrole_capability[port] != CAP_DEDICATED) #endif return; /* Clear override only if a charge is present on the port */ for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i) if (available_charge[i][port].current > 0) { clear_override = 1; break; } /* * If there is no charge present on the port, the dualrole * change is meaningless to charge_manager. */ if (!clear_override) return; break; } /* Remove override when a charger is plugged */ if (clear_override && override_port != port #ifndef CONFIG_CHARGE_MANAGER_DRP_CHARGING /* only remove override when it's a dedicated charger */ && dualrole_capability[port] == CAP_DEDICATED #endif ) { override_port = OVERRIDE_OFF; if (delayed_override_port != OVERRIDE_OFF) { delayed_override_port = OVERRIDE_OFF; hook_call_deferred(&charge_override_timeout_data, -1); } } if (change == CHANGE_CHARGE) { available_charge[supplier][port].current = charge->current; available_charge[supplier][port].voltage = charge->voltage; registration_time[port] = get_time(); /* * After CHARGE_DETECT_DELAY, inform the host that charger * detection has been debounced. Since only one deferred * routine exists for all ports, the deferred call for a given * port may potentially be cancelled. This is mostly harmless * since cancellation implies that PD_EVENT_POWER_CHANGE was * just sent due to the power change on another port. */ if (charge->current > 0) hook_call_deferred(&charger_detect_debounced_data, CHARGE_DETECT_DELAY); /* * If we have a charge on our delayed override port within * the deadline, make it our override port. */ if (port == delayed_override_port && charge->current > 0 && pd_get_role(delayed_override_port) == PD_ROLE_SINK && get_time().val < delayed_override_deadline.val) { delayed_override_port = OVERRIDE_OFF; hook_call_deferred(&charge_override_timeout_data, -1); charge_manager_set_override(port); } } /* * Don't call charge_manager_refresh unless all ports + * suppliers have reported in. We don't want to make changes * to our charge port until we are certain we know what is * attached. */ if (charge_manager_is_seeded()) hook_call_deferred(&charge_manager_refresh_data, 0); } /** * Update available charge for a given port / supplier. * * @param supplier Charge supplier to update. * @param port Charge port to update. * @param charge Charge port current / voltage. */ void charge_manager_update_charge(int supplier, int port, struct charge_port_info *charge) { ASSERT(supplier >= 0 && supplier < CHARGE_SUPPLIER_COUNT); ASSERT(port >= 0 && port < CONFIG_USB_PD_PORT_COUNT); ASSERT(charge != NULL); charge_manager_make_change(CHANGE_CHARGE, supplier, port, charge); } /** * Notify charge_manager of a partner dualrole capability change. * * @param port Charge port which changed. * @param cap New port capability. */ void charge_manager_update_dualrole(int port, enum dualrole_capabilities cap) { ASSERT(port >= 0 && port < CONFIG_USB_PD_PORT_COUNT); if (charge_manager_spoof_dualrole_capability()) cap = CAP_DEDICATED; /* Ignore when capability is unchanged */ if (cap != dualrole_capability[port]) { dualrole_capability[port] = cap; charge_manager_make_change(CHANGE_DUALROLE, 0, port, NULL); } } /** * Update charge ceiling for a given port. The ceiling can be set independently * for several requestors, and the min. ceil will be enforced. * * @param port Charge port to update. * @param requestor Charge ceiling requestor. * @param ceil Charge ceiling (mA). */ void charge_manager_set_ceil(int port, enum ceil_requestor requestor, int ceil) { ASSERT(port >= 0 && port < CONFIG_USB_PD_PORT_COUNT && requestor >= 0 && requestor < CEIL_REQUESTOR_COUNT); if (charge_ceil[port][requestor] != ceil) { charge_ceil[port][requestor] = ceil; if (port == charge_port && charge_manager_is_seeded()) hook_call_deferred(&charge_manager_refresh_data, 0); } } /** * Select an 'override port', a port which is always the preferred charge port. * Returns EC_SUCCESS on success, ec_error_list status on failure. * * @param port Charge port to select as override, or * OVERRIDE_OFF to select no override port, * or OVERRIDE_DONT_CHARGE to specifc that no * charge port should be selected. */ int charge_manager_set_override(int port) { int retval = EC_SUCCESS; ASSERT(port >= OVERRIDE_DONT_CHARGE && port < CONFIG_USB_PD_PORT_COUNT); CPRINTS("Charge Override: %d", port); /* * If attempting to change the override port, then return * error. Since we may be in the middle of a power swap on * the original override port, it's too complicated to * guarantee that the original override port is switched back * to source. */ if (delayed_override_port != OVERRIDE_OFF) return EC_ERROR_BUSY; /* Set the override port if it's a sink. */ if (port < 0 || pd_get_role(port) == PD_ROLE_SINK) { if (override_port != port) { override_port = port; if (charge_manager_is_seeded()) hook_call_deferred( &charge_manager_refresh_data, 0); } } /* * If the attached device is capable of being a sink, request a * power swap and set the delayed override for swap completion. */ else if (pd_get_role(port) != PD_ROLE_SINK && dualrole_capability[port] == CAP_DUALROLE) { delayed_override_deadline.val = get_time().val + POWER_SWAP_TIMEOUT; delayed_override_port = port; hook_call_deferred(&charge_override_timeout_data, POWER_SWAP_TIMEOUT); pd_request_power_swap(port); /* Can't charge from requested port -- return error. */ } else retval = EC_ERROR_INVAL; return retval; } /** * Get the override port. OVERRIDE_OFF if no override port. * OVERRIDE_DONT_CHARGE if override is set for no port. * * @return override port */ int charge_manager_get_override(void) { return override_port; } int charge_manager_get_active_charge_port(void) { return charge_port; } /** * Return the charger current (mA) value. */ int charge_manager_get_charger_current(void) { return (charge_current != CHARGE_CURRENT_UNINITIALIZED) ? charge_current : 0; } /** * Return the power limit (uW) set by charge manager. */ int charge_manager_get_power_limit_uw(void) { int current_ma = charge_current; int voltage_mv = charge_voltage; if (current_ma == CHARGE_CURRENT_UNINITIALIZED || voltage_mv == CHARGE_VOLTAGE_UNINITIALIZED) return 0; else return current_ma * voltage_mv; } #ifndef TEST_BUILD static int hc_pd_power_info(struct host_cmd_handler_args *args) { const struct ec_params_usb_pd_power_info *p = args->params; struct ec_response_usb_pd_power_info *r = args->response; int port = p->port; /* If host is asking for the charging port, set port appropriately */ if (port == PD_POWER_CHARGING_PORT) port = charge_port; charge_manager_fill_power_info(port, r); args->response_size = sizeof(*r); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_USB_PD_POWER_INFO, hc_pd_power_info, EC_VER_MASK(0)); #endif /* TEST_BUILD */ static int hc_charge_port_override(struct host_cmd_handler_args *args) { const struct ec_params_charge_port_override *p = args->params; const int16_t override_port = p->override_port; if (override_port < OVERRIDE_DONT_CHARGE || override_port >= CONFIG_USB_PD_PORT_COUNT) return EC_RES_INVALID_PARAM; return charge_manager_set_override(override_port) == EC_SUCCESS ? EC_RES_SUCCESS : EC_RES_ERROR; } DECLARE_HOST_COMMAND(EC_CMD_PD_CHARGE_PORT_OVERRIDE, hc_charge_port_override, EC_VER_MASK(0)); static int command_charge_port_override(int argc, char **argv) { int port = OVERRIDE_OFF; int ret = EC_SUCCESS; char *e; if (argc >= 2) { port = strtoi(argv[1], &e, 0); if (*e || port < OVERRIDE_DONT_CHARGE || port >= CONFIG_USB_PD_PORT_COUNT) return EC_ERROR_PARAM1; ret = charge_manager_set_override(port); } ccprintf("Override: %d\n", (argc >= 2 && ret == EC_SUCCESS) ? port : override_port); return ret; } DECLARE_CONSOLE_COMMAND(chgoverride, command_charge_port_override, "[port | -1 | -2]", "Force charging from a given port (-1 = off, -2 = disable charging)", NULL); #ifdef CONFIG_CHARGE_MANAGER_EXTERNAL_POWER_LIMIT static void charge_manager_set_external_power_limit(int current_lim, int voltage_lim) { int port; if (current_lim == EC_POWER_LIMIT_NONE) current_lim = CHARGE_CEIL_NONE; if (voltage_lim == EC_POWER_LIMIT_NONE) voltage_lim = PD_MAX_VOLTAGE_MV; for (port = 0; port < CONFIG_USB_PD_PORT_COUNT; ++port) { charge_manager_set_ceil(port, CEIL_REQUESTOR_HOST, current_lim); pd_set_external_voltage_limit(port, voltage_lim); } } /* * On transition out of S0, disable all external power limits, in case AP * failed to clear them. */ static void charge_manager_external_power_limit_off(void) { charge_manager_set_external_power_limit(EC_POWER_LIMIT_NONE, EC_POWER_LIMIT_NONE); } DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, charge_manager_external_power_limit_off, HOOK_PRIO_DEFAULT); static int hc_external_power_limit(struct host_cmd_handler_args *args) { const struct ec_params_external_power_limit_v1 *p = args->params; charge_manager_set_external_power_limit(p->current_lim, p->voltage_lim); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_EXTERNAL_POWER_LIMIT, hc_external_power_limit, EC_VER_MASK(1)); static int command_external_power_limit(int argc, char **argv) { int max_current; int max_voltage; char *e; if (argc >= 2) { max_current = strtoi(argv[1], &e, 10); if (*e) return EC_ERROR_PARAM1; } else max_current = EC_POWER_LIMIT_NONE; if (argc >= 3) { max_voltage = strtoi(argv[2], &e, 10); if (*e) return EC_ERROR_PARAM1; } else max_voltage = EC_POWER_LIMIT_NONE; charge_manager_set_external_power_limit(max_current, max_voltage); ccprintf("max req: %dmA %dmV\n", max_current, max_voltage); return EC_SUCCESS; } DECLARE_CONSOLE_COMMAND(chglim, command_external_power_limit, "[max_current (mA)] [max_voltage (mV)]", "Set max charger current / voltage", NULL); #endif /* CONFIG_CHARGE_MANAGER_EXTERNAL_POWER_LIMIT */