278 lines
6.0 KiB
C
278 lines
6.0 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 management - common header for TCPM drivers */
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#ifndef __CROS_EC_USB_PD_TCPM_TCPM_H
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#define __CROS_EC_USB_PD_TCPM_TCPM_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "tcpm_driver.h"
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#include "usb_pd_tcpm.h"
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#if defined(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE) && \
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!defined(CONFIG_USB_PD_DUAL_ROLE)
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#error "DRP auto toggle requires board to have DRP support"
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#error "Please upgrade your board configuration"
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#endif
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#ifndef CONFIG_USB_PD_TCPC
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extern const struct tcpc_config_t tcpc_config[];
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/* I2C wrapper functions - get I2C port / slave addr from config struct. */
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void tcpc_i2c_init(void);
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int tcpc_write(int port, int reg, int val);
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int tcpc_write16(int port, int reg, int val);
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int tcpc_read(int port, int reg, int *val);
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int tcpc_read16(int port, int reg, int *val);
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int tcpc_xfer(int port,
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const uint8_t *out, int out_size,
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uint8_t *in, int in_size,
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int flags);
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/* TCPM driver wrapper function */
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static inline int tcpm_init(int port)
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{
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int rv;
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rv = tcpc_config[port].drv->init(port);
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if (rv)
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return rv;
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/* Board specific post TCPC init */
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if (board_tcpc_post_init)
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rv = board_tcpc_post_init(port);
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return rv;
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}
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static inline int tcpm_release(int port)
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{
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return tcpc_config[port].drv->release(port);
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}
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static inline int tcpm_get_cc(int port, int *cc1, int *cc2)
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{
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return tcpc_config[port].drv->get_cc(port, cc1, cc2);
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}
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static inline int tcpm_get_vbus_level(int port)
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{
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return tcpc_config[port].drv->get_vbus_level(port);
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}
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static inline int tcpm_select_rp_value(int port, int rp)
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{
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return tcpc_config[port].drv->select_rp_value(port, rp);
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}
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static inline int tcpm_set_cc(int port, int pull)
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{
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return tcpc_config[port].drv->set_cc(port, pull);
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}
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static inline int tcpm_set_polarity(int port, int polarity)
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{
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return tcpc_config[port].drv->set_polarity(port, polarity);
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}
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static inline int tcpm_set_vconn(int port, int enable)
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{
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return tcpc_config[port].drv->set_vconn(port, enable);
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}
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static inline int tcpm_set_msg_header(int port, int power_role, int data_role)
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{
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return tcpc_config[port].drv->set_msg_header(port, power_role,
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data_role);
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}
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static inline int tcpm_set_rx_enable(int port, int enable)
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{
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return tcpc_config[port].drv->set_rx_enable(port, enable);
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}
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static inline int tcpm_get_message(int port, uint32_t *payload, int *head)
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{
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return tcpc_config[port].drv->get_message(port, payload, head);
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}
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static inline int tcpm_transmit(int port, enum tcpm_transmit_type type,
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uint16_t header, const uint32_t *data)
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{
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return tcpc_config[port].drv->transmit(port, type, header, data);
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}
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static inline void tcpc_alert(int port)
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{
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tcpc_config[port].drv->tcpc_alert(port);
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}
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static inline void tcpc_discharge_vbus(int port, int enable)
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{
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tcpc_config[port].drv->tcpc_discharge_vbus(port, enable);
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}
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#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
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static inline int tcpm_auto_toggle_supported(int port)
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{
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return !!tcpc_config[port].drv->drp_toggle;
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}
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static inline int tcpm_set_drp_toggle(int port, int enable)
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{
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return tcpc_config[port].drv->drp_toggle(port, enable);
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}
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#endif
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#ifdef CONFIG_CMD_I2C_STRESS_TEST_TCPC
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static inline int tcpc_i2c_read(const int port, const int addr,
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const int reg, int *data)
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{
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return tcpc_read(port, reg, data);
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}
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static inline int tcpc_i2c_write(const int port, const int addr,
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const int reg, int data)
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{
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return tcpc_write(port, reg, data);
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}
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#endif
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#else
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/**
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* Initialize TCPM driver and wait for TCPC readiness.
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*
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* @param port Type-C port number
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_init(int port);
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/**
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* Read the CC line status.
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*
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* @param port Type-C port number
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* @param cc1 pointer to CC status for CC1
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* @param cc2 pointer to CC status for CC2
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_get_cc(int port, int *cc1, int *cc2);
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/**
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* Read VBUS
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*
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* @param port Type-C port number
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*
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* @return 0 => VBUS not detected, 1 => VBUS detected
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*/
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int tcpm_get_vbus_level(int port);
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/**
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* Set the value of the CC pull-up used when we are a source.
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*
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* @param port Type-C port number
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* @param rp One of enum tcpc_rp_value
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_select_rp_value(int port, int rp);
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/**
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* Set the CC pull resistor. This sets our role as either source or sink.
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*
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* @param port Type-C port number
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* @param pull One of enum tcpc_cc_pull
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_set_cc(int port, int pull);
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/**
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* Set polarity
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*
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* @param port Type-C port number
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* @param polarity 0=> transmit on CC1, 1=> transmit on CC2
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_set_polarity(int port, int polarity);
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/**
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* Set Vconn.
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*
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* @param port Type-C port number
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* @param polarity Polarity of the CC line to read
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_set_vconn(int port, int enable);
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/**
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* Set PD message header to use for goodCRC
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*
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* @param port Type-C port number
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* @param power_role Power role to use in header
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* @param data_role Data role to use in header
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_set_msg_header(int port, int power_role, int data_role);
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/**
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* Set RX enable flag
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*
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* @param port Type-C port number
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* @enable true for enable, false for disable
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_set_rx_enable(int port, int enable);
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/**
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* Read last received PD message.
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*
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* @param port Type-C port number
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* @param payload Pointer to location to copy payload of message
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* @param header of message
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_get_message(int port, uint32_t *payload, int *head);
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/**
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* Transmit PD message
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*
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* @param port Type-C port number
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* @param type Transmit type
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* @param header Packet header
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* @param cnt Number of bytes in payload
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* @param data Payload
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*
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* @return EC_SUCCESS or error
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*/
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int tcpm_transmit(int port, enum tcpm_transmit_type type, uint16_t header,
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const uint32_t *data);
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/**
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* TCPC is asserting alert
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*
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* @param port Type-C port number
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*/
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void tcpc_alert(int port);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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