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/* Copyright 2023 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/*
* AP VDM Control functions
* Note: Stubs of APIs are implemented for linking if feature is not enabled
*/
#ifndef __CROS_EC_USB_AP_VDM_CONTROL_H
#define __CROS_EC_USB_AP_VDM_CONTROL_H
#include "ec_commands.h"
#include "usb_pd_tcpm.h"
#ifdef CONFIG_USB_PD_VDM_AP_CONTROL
/*
* Informs the AP VDM module of a received Attention message. Note: all
* Attention messages are assumed to be SOP since cables are disallowed from
* sending this type of VDM.
*
* @param[in] port USB-C port number
* @param[in] length Number of objects filled in
* @param[in] buf Buffer containing received VDM (header and VDO)
*/
void ap_vdm_attention_enqueue(int port, int length, uint32_t *buf);
/*
* Initializes AP VDM state for a port.
*
* @param port USB-C port number
*/
void ap_vdm_init(int port);
/*
* Informs the AP VDM module that a VDM ACK was received.
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for received ACK
* @param vdo_count The number of VDOs in VDM; must be at least 1
* @param vdm The VDM payload of the ACK
*/
void ap_vdm_acked(int port, enum tcpci_msg_type type, int vdo_count,
uint32_t *vdm);
/*
* Informs the AP VDM module that a VDM NAK was received. Also applies when a
* VDM request received a Not Supported response or timed out waiting for a
* response.
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for request
* @param svid The SVID of the request
* @param vdm_cmd The VDM command of the request
* @param vdm_header VDM header reply (0 if a NAK wasn't actually received)
*/
void ap_vdm_naked(int port, enum tcpci_msg_type type, uint16_t svid,
uint8_t vdm_cmd, uint32_t vdm_header);
#else /* else for CONFIG_USB_PD_VDM_AP_CONTROL */
static inline void ap_vdm_attention_enqueue(int port, int length, uint32_t *buf)
{
}
static inline void ap_vdm_init(int port)
{
}
static inline void ap_vdm_acked(int port, enum tcpci_msg_type type,
int vdo_count, uint32_t *vdm)
{
}
static inline void ap_vdm_naked(int port, enum tcpci_msg_type type,
uint16_t svid, uint8_t vdm_cmd,
uint32_t vdm_header)
{
}
#endif /* CONFIG_USB_PD_VDM_AP_CONTROL */
#endif /* __CROS_EC_USB_AP_VDM_H */
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