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https://github.com/Telecominfraproject/OpenCellular.git
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48435ece3b
Previously our charger ISR called a deferred task which woke our charger task. We can skip the deferred task and just wake our charger task directly. The other meaningful change here is to assume that we're using the charger for VBUS detection / BC1.2 if we have a usb_chg task, which holds true for all of our current boards with this charger. BUG=None TEST=Manual on kevin with subsequent commit. Verify charger connect / disconnect detection works properly on both ports, with zinger, donette and generic DCP charger. BRANCH=None Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Change-Id: Iad4f3ea90947b50859c549b591675e325717209f Reviewed-on: https://chromium-review.googlesource.com/352822 Commit-Ready: Shawn N <shawnn@chromium.org> Tested-by: Shawn N <shawnn@chromium.org> Reviewed-by: Vijay P Hiremath <vijay.p.hiremath@intel.com> Reviewed-by: Mary Ruthven <mruthven@chromium.org> Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/* Copyright (c) 2012 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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/* USB charging control module for Chrome EC */
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#ifndef __CROS_EC_USB_CHARGE_H
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#define __CROS_EC_USB_CHARGE_H
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#include "common.h"
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/* USB charger voltage */
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#define USB_CHARGER_VOLTAGE_MV 5000
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/* USB charger minimum current */
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#define USB_CHARGER_MIN_CURR_MA 500
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enum usb_charge_mode {
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/* Disable USB port. */
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USB_CHARGE_MODE_DISABLED,
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/* Set USB port to Standard Downstream Port, USB 2.0 mode. */
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USB_CHARGE_MODE_SDP2,
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/* Set USB port to Charging Downstream Port, BC 1.2. */
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USB_CHARGE_MODE_CDP,
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/* Set USB port to Dedicated Charging Port, BC 1.2. */
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USB_CHARGE_MODE_DCP_SHORT,
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/* Enable USB port (for dumb ports). */
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USB_CHARGE_MODE_ENABLED,
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USB_CHARGE_MODE_COUNT
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};
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/**
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* Set USB charge mode for the port.
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*
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* @param usb_port_id Port to set.
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* @param mode New mode for port.
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* @return EC_SUCCESS, or non-zero if error.
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*/
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int usb_charge_set_mode(int usb_port_id, enum usb_charge_mode mode);
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/**
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* Return a bitmask of which USB ports are enabled.
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*
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* If bit (1 << i) is set, port <i> is enabled. If it is clear, port <i> is
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* in USB_CHARGE_MODE_DISABLED.
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*/
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int usb_charge_ports_enabled(void);
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#ifdef HAS_TASK_USB_CHG_P0
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#define USB_CHG_EVENT_BC12 TASK_EVENT_CUSTOM(1)
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#define USB_CHG_EVENT_VBUS TASK_EVENT_CUSTOM(2)
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#define USB_CHG_EVENT_INTR TASK_EVENT_CUSTOM(4)
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#endif
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/*
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* Define USB_CHG_PORT_TO_TASK_ID() and TASK_ID_TO_USB_CHG__PORT() macros to
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* go between USB_CHG port number and task ID. Assume that TASK_ID_USB_CHG_P0,
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* is the lowest task ID and IDs are on a continuous range.
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*/
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#ifdef HAS_TASK_USB_CHG_P0
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#define USB_CHG_PORT_TO_TASK_ID(port) (TASK_ID_USB_CHG_P0 + (port))
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#define TASK_ID_TO_USB_CHG_PORT(id) ((id) - TASK_ID_USB_CHG_P0)
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#else
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#define USB_CHG_PORT_TO_TASK_ID(port) -1 /* dummy task ID */
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#define TASK_ID_TO_USB_CHG_PORT(id) 0
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#endif /* HAS_TASK_USB_CHG_P0 */
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/**
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* Returns true if the passed port is a power source.
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*
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* @param port Port number.
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* @return True if port is sourcing vbus.
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*/
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int usb_charger_port_is_sourcing_vbus(int port);
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enum usb_switch {
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USB_SWITCH_CONNECT,
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USB_SWITCH_DISCONNECT,
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USB_SWITCH_RESTORE,
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};
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/**
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* Configure USB data switches on type-C port.
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*
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* @param port port number.
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* @param setting new switch setting to configure.
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*/
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void usb_charger_set_switches(int port, enum usb_switch setting);
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/**
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* Notify USB_CHG task that VBUS level has changed.
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*
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* @param port port number.
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* @param vbus_level new VBUS level
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*/
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void usb_charger_vbus_change(int port, int vbus_level);
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#endif /* __CROS_EC_USB_CHARGE_H */
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