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7fb0338cbd
When usb_wake is called (key press, trackpad event), pulse
detection pin for 100us. This allows Lid EC to wake the AP
even when it is in deep S3 mode, where normal wake using USB
lines does not work.
BRANCH=none
BUG=b:35775062
TEST=Flash hammer, looks at poppy console: base power is not
disconnected, but events appear in the console.
Change-Id: I7b8ee407046d4caa1ce75190c30d693b71b00d2e
Reviewed-on: https://chromium-review.googlesource.com/448380
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
70 lines
2.0 KiB
C
70 lines
2.0 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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* USB API definitions.
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*
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* This file includes definitions needed by common code that wants to control
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* the state of the USB peripheral, but doesn't need to know about the specific
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* implementation.
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*/
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#ifndef __CROS_EC_USB_API_H
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#define __CROS_EC_USB_API_H
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/*
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* Initialize the USB peripheral, enabling its clock and configuring the DP/DN
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* GPIOs correctly. This function is called via an init hook (unless the board
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* defined CONFIG_USB_INHIBIT_INIT), but may need to be called again if
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* usb_release is called. This function will call usb_connect by default
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* unless CONFIG_USB_INHIBIT_CONNECT is defined.
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*/
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void usb_init(void);
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/* Check if USB peripheral is enabled. */
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int usb_is_enabled(void);
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/*
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* Enable the pullup on the DP line to signal that this device exists to the
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* host and to start the enumeration process.
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*/
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void usb_connect(void);
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/*
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* Disable the pullup on the DP line. This causes the device to be disconnected
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* from the host.
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*/
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void usb_disconnect(void);
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/*
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* Disconnect from the host by calling usb_disconnect and then turn off the USB
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* peripheral, releasing its GPIOs and disabling its clock.
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*/
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void usb_release(void);
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/*
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* Returns true if USB device is currently suspended.
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* Requires CONFIG_USB_SUSPEND to be defined.
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*/
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int usb_is_suspended(void);
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/*
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* Tell the host to wake up. Requires CONFIG_USB_REMOTE_WAKEUP to be defined,
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* and a chip that implements the function.
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*
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* Returns immediately, suspend status can be checked using usb_is_suspended.
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*/
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void usb_wake(void);
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/* Board-specific USB wake, for side-band wake, called by usb_wake above. */
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void board_usb_wake(void);
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#ifdef CONFIG_USB_SELECT_PHY
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/* Select which PHY to use. */
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void usb_select_phy(uint32_t phy);
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/* Get the current PHY */
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uint32_t usb_get_phy(void);
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#endif
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#endif /* __CROS_EC_USB_API_H */
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