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96895743b0
If a dual-role charger is plugged, we will not realize it is dual-role until after we see a type-C charge source. It can cause us to briefly charge from a dual-role charger, which has bad side effects related to charge override and the lightbar. Fix this by not charging from a port until we are fairly certain that it is a dedicated charger (based upon PD discovery timeout). BUG=chrome-os-partner:36390 TEST=Manual on Samus. Insert 1A Apple charger, verify correct detection. Run 'chgoverride -2' to prevent charging, then repeatedly insert + remove a dual-role charger on the other charge port. Verify that charging is still prevented. Finally, insert a dedicated charger and verify that the override is removed. Also, pass unit tests and verify correct detection in various scenarios with various chargers. BRANCH=Samus Change-Id: Ia4154f34dd0a850b6e72bebadbd938f034532f14 Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/247130 Reviewed-by: Alec Berg <alecaberg@chromium.org>
57 lines
1.7 KiB
C
57 lines
1.7 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 __CHARGE_MANAGER_H
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#define __CHARGE_MANAGER_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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/* 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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/* Called by charging tasks to indicate partner dualrole capability change */
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void charge_manager_update_dualrole(int port);
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/* Update charge ceiling for a given port */
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void charge_manager_set_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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/* 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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/* Set the charge current limit. */
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void board_set_charge_limit(int charge_ma);
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/* Called on delayed override timeout */
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void board_charge_manager_override_timeout(void);
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#endif /* __CHARGE_MANAGER_H */
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