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f66113247a
If battery is not present, input current is set to PD_MAX_CURRENT_MA.
If the input power set is greater than the maximum allowed system power,
system might get damaged. Hence, limit the input current to meet maximum
allowed input system power.
BUG=chrome-os-partner:58498
BRANCH=none
TEST=Manually tested on Reef. Removed the battery & using 'charger'
console command observed the following.
With Zinger charger at 20V - Input current is set to 2.25A
With Type-C & other chargers - Input current is set to 3A
Change-Id: Ife8686f322e095aa74b740a7c469bfe87107fb9a
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/397865
Commit-Ready: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Tested-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Shawn N <shawnn@chromium.org>
144 lines
4.2 KiB
C
144 lines
4.2 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef __CROS_EC_CHARGE_MANAGER_H
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#define __CROS_EC_CHARGE_MANAGER_H
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#include "common.h"
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/* Charge port that indicates no active port */
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#define CHARGE_SUPPLIER_NONE -1
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#define CHARGE_PORT_NONE -1
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#define CHARGE_CEIL_NONE -1
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/* Initial charge state */
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#define CHARGE_CURRENT_UNINITIALIZED -1
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#define CHARGE_VOLTAGE_UNINITIALIZED -1
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/*
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* Time to delay for detecting the charger type (must be long enough for BC1.2
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* driver to get supplier information and notify charge manager).
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*/
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#define CHARGE_DETECT_DELAY (2*SECOND)
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/* Commonly-used charge suppliers listed in no particular order */
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enum charge_supplier {
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CHARGE_SUPPLIER_PD,
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CHARGE_SUPPLIER_TYPEC,
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CHARGE_SUPPLIER_BC12_DCP,
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CHARGE_SUPPLIER_BC12_CDP,
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CHARGE_SUPPLIER_BC12_SDP,
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CHARGE_SUPPLIER_PROPRIETARY,
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CHARGE_SUPPLIER_OTHER,
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CHARGE_SUPPLIER_VBUS,
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CHARGE_SUPPLIER_COUNT
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};
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/* Charge tasks report available current and voltage */
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struct charge_port_info {
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int current;
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int voltage;
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};
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/* Called by charging tasks to update their available charge */
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void charge_manager_update_charge(int supplier,
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int port,
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struct charge_port_info *charge);
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/* Partner port dualrole capabilities */
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enum dualrole_capabilities {
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CAP_UNKNOWN,
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CAP_DUALROLE,
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CAP_DEDICATED,
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};
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/* Called by charging tasks to indicate partner dualrole capability change */
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void charge_manager_update_dualrole(int port, enum dualrole_capabilities cap);
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/*
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* Charge ceiling can be set independently by different tasks / functions,
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* for different purposes.
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*/
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enum ceil_requestor {
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/* Set by PD task, during negotiation */
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CEIL_REQUESTOR_PD,
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/* Set by host commands */
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CEIL_REQUESTOR_HOST,
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/* Number of ceiling groups */
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CEIL_REQUESTOR_COUNT,
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};
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/* Update charge ceiling for a given port / requestor */
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void charge_manager_set_ceil(int port, enum ceil_requestor requestor, int ceil);
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/*
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* Update PD charge ceiling for a given port. In the event that our ceiling
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* is currently above ceil, change the current limit before returning, without
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* waiting for a charge manager refresh. This function should only be used in
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* time-critical situations where we absolutely cannot proceed without limiting
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* our input current, and it should only be called from the PD tasks.
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* If you ever call this function then you are a terrible person.
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*/
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void charge_manager_force_ceil(int port, int ceil);
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/* Select an 'override port', which is always the preferred charge port */
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int charge_manager_set_override(int port);
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int charge_manager_get_override(void);
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/* Returns the current active charge port, as determined by charge manager */
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int charge_manager_get_active_charge_port(void);
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/* Return the power limit (uW) set by charge manager. */
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int charge_manager_get_power_limit_uw(void);
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/* Return the charger current (mA) value or CHARGE_CURRENT_UNINITIALIZED. */
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int charge_manager_get_charger_current(void);
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#ifdef CONFIG_USB_PD_LOGGING
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/* Save power state log entry for the given port */
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void charge_manager_save_log(int port);
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#endif
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/* Update whether a given port is sourcing current. */
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void charge_manager_source_port(int port, int enable);
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/*
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* Get PD source power data objects.
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*
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* @param src_pdo pointer to the data to return.
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* @return number of PDOs returned.
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*/
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int charge_manager_get_source_pdo(const uint32_t **src_pdo);
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/* Board-level callback functions */
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/*
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* Set the active charge port. Returns EC_SUCCESS if the charge port is
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* accepted, returns ec_error_list status otherwise.
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*/
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int board_set_active_charge_port(int charge_port);
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/*
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* Set the charge current limit.
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*
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* @param port PD port.
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* @param supplier Identified CHARGE_SUPPLIER_*.
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* @param charge_ma Desired charge current limit, <= max_ma.
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* @param max_ma Maximum charge current limit, >= charge_ma.
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* @param charge_mv Negotiated charge voltage (mV).
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*/
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void board_set_charge_limit(int port, int supplier, int charge_ma,
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int max_ma, int charge_mv);
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/*
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* Get whether the port is sourcing power on VBUS.
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*
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* @param port PD port.
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* @return VBUS power state.
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*/
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int board_vbus_source_enabled(int port);
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#endif /* __CROS_EC_CHARGE_MANAGER_H */
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