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/* Copyright 2021 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef __BRYA_CBI_EC_FW_CONFIG_H_
#define __BRYA_CBI_EC_FW_CONFIG_H_
#include "stdint.h"
/****************************************************************************
* CBI FW_CONFIG layout shared by all Brya boards
*
* Source of truth is the program/brya/program.star configuration file.
*/
/*
* TODO(b/180434685): are these right?
* also, remove DB_USB_ABSENT2 after all existing boards have been
* set up correctly.
*/
enum ec_cfg_usb_db_type {
DB_USB_ABSENT = 0,
DB_USB3_PS8815 = 1,
DB_USB_ABSENT2 = 15
};
union brya_cbi_fw_config {
struct {
/*
* TODO(b/180434685): 4 bits?
*/
enum ec_cfg_usb_db_type usb_db : 4;
uint32_t reserved_1 : 28;
};
uint32_t raw_value;
};
/*
* Each Brya board must define the default FW_CONFIG options to use
* if the CBI data has not been initialized.
*/
extern const union brya_cbi_fw_config fw_config_defaults;
/**
* Initialize the FW_CONFIG from CBI data. If the CBI data is not valid, set the
* FW_CONFIG to the board specific defaults.
*/
void init_fw_config(void);
/**
* Read the cached FW_CONFIG. Guaranteed to have valid values.
*
* @return the FW_CONFIG for the board.
*/
union brya_cbi_fw_config get_fw_config(void);
/**
* Get the USB daughter board type from FW_CONFIG.
*
* @return the USB daughter board type.
*/
enum ec_cfg_usb_db_type ec_cfg_usb_db_type(void);
#endif /* __BRYA_CBI_EC_FW_CONFIG_H_ */
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