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https://github.com/Telecominfraproject/OpenCellular.git
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d862dd0598
Modified TCPC layer to utilize the Power_Status and Power_Status_Mask registers. VBUS status is stored in Power_Status and when a change is detected, it's communicated to the TCPM via the ALERT# line. BUG=chrome-os-partner:43440 BRANCH=none TEST=Tested the feature on Glados and Oak connecting to both Ziger and Samus. Verfied that VBUS status is communicated via the TCPCI and that PD contracts are established without using the VBUS_WAKE GPIO lines on Glados and Oak. Change-Id: Ie5aa32eecc887f3cb00880a285f1e710b7064384 Signed-off-by: Scott Collyer <scollyer@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/289931 Reviewed-by: Rong Chang <rongchang@chromium.org> Reviewed-by: Alec Berg <alecaberg@chromium.org> Commit-Queue: Rong Chang <rongchang@chromium.org> Tested-by: Rong Chang <rongchang@chromium.org>
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* Copyright 2015 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 Power delivery port controller */
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#ifndef __CROS_EC_USB_PD_TCPC_H
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#define __CROS_EC_USB_PD_TCPC_H
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#ifndef CONFIG_TCPC_I2C_BASE_ADDR
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#define CONFIG_TCPC_I2C_BASE_ADDR 0x9c
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#endif
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/* If we are a TCPC but do not a TCPM, then we implement the slave TCPCI */
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#if defined(CONFIG_USB_PD_TCPC) && !defined(CONFIG_USB_PD_TCPM_STUB)
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#define TCPCI_I2C_SLAVE
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#endif
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#ifdef TCPCI_I2C_SLAVE
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/* Convert TCPC address to type-C port number */
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#define TCPC_ADDR_TO_PORT(addr) (((addr) - CONFIG_TCPC_I2C_BASE_ADDR) >> 1)
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/* Check if the i2c address belongs to TCPC */
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#define ADDR_IS_TCPC(addr) (((addr) & 0xfc) == CONFIG_TCPC_I2C_BASE_ADDR)
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#endif
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/**
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* Process incoming TCPCI I2C command
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*
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* @param read This is a read request. If 0, this is a write request.
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* @param len Length of incoming payload
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* @param payload Pointer to incoming and outgoing data
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* @param send_response Function to call to send response if necessary
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*/
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void tcpc_i2c_process(int read, int port, int len, uint8_t *payload,
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void (*send_response)(int));
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/**
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* Handle VBUS wake interrupts
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*
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* @param signal The VBUS wake interrupt signal
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*/
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void pd_vbus_evt_p0(enum gpio_signal signal);
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void pd_vbus_evt_p1(enum gpio_signal signal);
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#endif /* __CROS_EC_USB_PD_TCPC_H */
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