464 lines
14 KiB
C
464 lines
14 KiB
C
/*
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* Copyright 2015-2017 Google, Inc
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __LINUX_USB_PD_H
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#define __LINUX_USB_PD_H
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#include <linux/types.h>
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#include <linux/usb/typec.h>
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/* USB PD Messages */
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enum pd_ctrl_msg_type {
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/* 0 Reserved */
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PD_CTRL_GOOD_CRC = 1,
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PD_CTRL_GOTO_MIN = 2,
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PD_CTRL_ACCEPT = 3,
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PD_CTRL_REJECT = 4,
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PD_CTRL_PING = 5,
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PD_CTRL_PS_RDY = 6,
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PD_CTRL_GET_SOURCE_CAP = 7,
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PD_CTRL_GET_SINK_CAP = 8,
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PD_CTRL_DR_SWAP = 9,
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PD_CTRL_PR_SWAP = 10,
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PD_CTRL_VCONN_SWAP = 11,
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PD_CTRL_WAIT = 12,
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PD_CTRL_SOFT_RESET = 13,
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/* 14-15 Reserved */
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PD_CTRL_NOT_SUPP = 16,
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PD_CTRL_GET_SOURCE_CAP_EXT = 17,
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PD_CTRL_GET_STATUS = 18,
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PD_CTRL_FR_SWAP = 19,
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PD_CTRL_GET_PPS_STATUS = 20,
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PD_CTRL_GET_COUNTRY_CODES = 21,
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/* 22-31 Reserved */
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};
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enum pd_data_msg_type {
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/* 0 Reserved */
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PD_DATA_SOURCE_CAP = 1,
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PD_DATA_REQUEST = 2,
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PD_DATA_BIST = 3,
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PD_DATA_SINK_CAP = 4,
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PD_DATA_BATT_STATUS = 5,
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PD_DATA_ALERT = 6,
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PD_DATA_GET_COUNTRY_INFO = 7,
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/* 8-14 Reserved */
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PD_DATA_VENDOR_DEF = 15,
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/* 16-31 Reserved */
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};
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enum pd_ext_msg_type {
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/* 0 Reserved */
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PD_EXT_SOURCE_CAP_EXT = 1,
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PD_EXT_STATUS = 2,
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PD_EXT_GET_BATT_CAP = 3,
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PD_EXT_GET_BATT_STATUS = 4,
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PD_EXT_BATT_CAP = 5,
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PD_EXT_GET_MANUFACTURER_INFO = 6,
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PD_EXT_MANUFACTURER_INFO = 7,
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PD_EXT_SECURITY_REQUEST = 8,
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PD_EXT_SECURITY_RESPONSE = 9,
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PD_EXT_FW_UPDATE_REQUEST = 10,
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PD_EXT_FW_UPDATE_RESPONSE = 11,
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PD_EXT_PPS_STATUS = 12,
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PD_EXT_COUNTRY_INFO = 13,
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PD_EXT_COUNTRY_CODES = 14,
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/* 15-31 Reserved */
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};
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#define PD_REV10 0x0
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#define PD_REV20 0x1
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#define PD_REV30 0x2
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#define PD_MAX_REV PD_REV30
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#define PD_HEADER_EXT_HDR BIT(15)
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#define PD_HEADER_CNT_SHIFT 12
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#define PD_HEADER_CNT_MASK 0x7
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#define PD_HEADER_ID_SHIFT 9
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#define PD_HEADER_ID_MASK 0x7
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#define PD_HEADER_PWR_ROLE BIT(8)
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#define PD_HEADER_REV_SHIFT 6
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#define PD_HEADER_REV_MASK 0x3
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#define PD_HEADER_DATA_ROLE BIT(5)
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#define PD_HEADER_TYPE_SHIFT 0
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#define PD_HEADER_TYPE_MASK 0x1f
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#define PD_HEADER(type, pwr, data, rev, id, cnt, ext_hdr) \
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((((type) & PD_HEADER_TYPE_MASK) << PD_HEADER_TYPE_SHIFT) | \
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((pwr) == TYPEC_SOURCE ? PD_HEADER_PWR_ROLE : 0) | \
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((data) == TYPEC_HOST ? PD_HEADER_DATA_ROLE : 0) | \
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(rev << PD_HEADER_REV_SHIFT) | \
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(((id) & PD_HEADER_ID_MASK) << PD_HEADER_ID_SHIFT) | \
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(((cnt) & PD_HEADER_CNT_MASK) << PD_HEADER_CNT_SHIFT) | \
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((ext_hdr) ? PD_HEADER_EXT_HDR : 0))
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#define PD_HEADER_LE(type, pwr, data, rev, id, cnt) \
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cpu_to_le16(PD_HEADER((type), (pwr), (data), (rev), (id), (cnt), (0)))
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static inline unsigned int pd_header_cnt(u16 header)
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{
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return (header >> PD_HEADER_CNT_SHIFT) & PD_HEADER_CNT_MASK;
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}
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static inline unsigned int pd_header_cnt_le(__le16 header)
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{
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return pd_header_cnt(le16_to_cpu(header));
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}
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static inline unsigned int pd_header_type(u16 header)
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{
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return (header >> PD_HEADER_TYPE_SHIFT) & PD_HEADER_TYPE_MASK;
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}
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static inline unsigned int pd_header_type_le(__le16 header)
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{
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return pd_header_type(le16_to_cpu(header));
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}
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static inline unsigned int pd_header_msgid(u16 header)
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{
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return (header >> PD_HEADER_ID_SHIFT) & PD_HEADER_ID_MASK;
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}
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static inline unsigned int pd_header_msgid_le(__le16 header)
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{
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return pd_header_msgid(le16_to_cpu(header));
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}
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static inline unsigned int pd_header_rev(u16 header)
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{
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return (header >> PD_HEADER_REV_SHIFT) & PD_HEADER_REV_MASK;
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}
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static inline unsigned int pd_header_rev_le(__le16 header)
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{
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return pd_header_rev(le16_to_cpu(header));
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}
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#define PD_EXT_HDR_CHUNKED BIT(15)
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#define PD_EXT_HDR_CHUNK_NUM_SHIFT 11
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#define PD_EXT_HDR_CHUNK_NUM_MASK 0xf
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#define PD_EXT_HDR_REQ_CHUNK BIT(10)
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#define PD_EXT_HDR_DATA_SIZE_SHIFT 0
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#define PD_EXT_HDR_DATA_SIZE_MASK 0x1ff
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#define PD_EXT_HDR(data_size, req_chunk, chunk_num, chunked) \
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((((data_size) & PD_EXT_HDR_DATA_SIZE_MASK) << PD_EXT_HDR_DATA_SIZE_SHIFT) | \
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((req_chunk) ? PD_EXT_HDR_REQ_CHUNK : 0) | \
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(((chunk_num) & PD_EXT_HDR_CHUNK_NUM_MASK) << PD_EXT_HDR_CHUNK_NUM_SHIFT) | \
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((chunked) ? PD_EXT_HDR_CHUNKED : 0))
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#define PD_EXT_HDR_LE(data_size, req_chunk, chunk_num, chunked) \
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cpu_to_le16(PD_EXT_HDR((data_size), (req_chunk), (chunk_num), (chunked)))
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static inline unsigned int pd_ext_header_chunk_num(u16 ext_header)
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{
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return (ext_header >> PD_EXT_HDR_CHUNK_NUM_SHIFT) &
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PD_EXT_HDR_CHUNK_NUM_MASK;
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}
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static inline unsigned int pd_ext_header_data_size(u16 ext_header)
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{
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return (ext_header >> PD_EXT_HDR_DATA_SIZE_SHIFT) &
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PD_EXT_HDR_DATA_SIZE_MASK;
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}
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static inline unsigned int pd_ext_header_data_size_le(__le16 ext_header)
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{
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return pd_ext_header_data_size(le16_to_cpu(ext_header));
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}
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#define PD_MAX_PAYLOAD 7
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#define PD_EXT_MAX_CHUNK_DATA 26
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/**
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* struct pd_chunked_ext_message_data - PD chunked extended message data as
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* seen on wire
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* @header: PD extended message header
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* @data: PD extended message data
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*/
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struct pd_chunked_ext_message_data {
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__le16 header;
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u8 data[PD_EXT_MAX_CHUNK_DATA];
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} __packed;
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/**
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* struct pd_message - PD message as seen on wire
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* @header: PD message header
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* @payload: PD message payload
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* @ext_msg: PD message chunked extended message data
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*/
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struct pd_message {
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__le16 header;
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union {
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__le32 payload[PD_MAX_PAYLOAD];
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struct pd_chunked_ext_message_data ext_msg;
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};
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} __packed;
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/* PDO: Power Data Object */
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#define PDO_MAX_OBJECTS 7
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enum pd_pdo_type {
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PDO_TYPE_FIXED = 0,
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PDO_TYPE_BATT = 1,
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PDO_TYPE_VAR = 2,
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PDO_TYPE_APDO = 3,
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};
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#define PDO_TYPE_SHIFT 30
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#define PDO_TYPE_MASK 0x3
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#define PDO_TYPE(t) ((t) << PDO_TYPE_SHIFT)
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#define PDO_VOLT_MASK 0x3ff
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#define PDO_CURR_MASK 0x3ff
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#define PDO_PWR_MASK 0x3ff
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#define PDO_FIXED_DUAL_ROLE BIT(29) /* Power role swap supported */
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#define PDO_FIXED_SUSPEND BIT(28) /* USB Suspend supported (Source) */
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#define PDO_FIXED_HIGHER_CAP BIT(28) /* Requires more than vSafe5V (Sink) */
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#define PDO_FIXED_EXTPOWER BIT(27) /* Externally powered */
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#define PDO_FIXED_USB_COMM BIT(26) /* USB communications capable */
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#define PDO_FIXED_DATA_SWAP BIT(25) /* Data role swap supported */
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#define PDO_FIXED_VOLT_SHIFT 10 /* 50mV units */
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#define PDO_FIXED_CURR_SHIFT 0 /* 10mA units */
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#define PDO_FIXED_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_FIXED_VOLT_SHIFT)
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#define PDO_FIXED_CURR(ma) ((((ma) / 10) & PDO_CURR_MASK) << PDO_FIXED_CURR_SHIFT)
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#define PDO_FIXED(mv, ma, flags) \
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(PDO_TYPE(PDO_TYPE_FIXED) | (flags) | \
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PDO_FIXED_VOLT(mv) | PDO_FIXED_CURR(ma))
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#define VSAFE5V 5000 /* mv units */
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#define PDO_BATT_MAX_VOLT_SHIFT 20 /* 50mV units */
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#define PDO_BATT_MIN_VOLT_SHIFT 10 /* 50mV units */
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#define PDO_BATT_MAX_PWR_SHIFT 0 /* 250mW units */
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#define PDO_BATT_MIN_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_BATT_MIN_VOLT_SHIFT)
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#define PDO_BATT_MAX_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_BATT_MAX_VOLT_SHIFT)
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#define PDO_BATT_MAX_POWER(mw) ((((mw) / 250) & PDO_PWR_MASK) << PDO_BATT_MAX_PWR_SHIFT)
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#define PDO_BATT(min_mv, max_mv, max_mw) \
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(PDO_TYPE(PDO_TYPE_BATT) | PDO_BATT_MIN_VOLT(min_mv) | \
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PDO_BATT_MAX_VOLT(max_mv) | PDO_BATT_MAX_POWER(max_mw))
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#define PDO_VAR_MAX_VOLT_SHIFT 20 /* 50mV units */
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#define PDO_VAR_MIN_VOLT_SHIFT 10 /* 50mV units */
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#define PDO_VAR_MAX_CURR_SHIFT 0 /* 10mA units */
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#define PDO_VAR_MIN_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_VAR_MIN_VOLT_SHIFT)
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#define PDO_VAR_MAX_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_VAR_MAX_VOLT_SHIFT)
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#define PDO_VAR_MAX_CURR(ma) ((((ma) / 10) & PDO_CURR_MASK) << PDO_VAR_MAX_CURR_SHIFT)
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#define PDO_VAR(min_mv, max_mv, max_ma) \
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(PDO_TYPE(PDO_TYPE_VAR) | PDO_VAR_MIN_VOLT(min_mv) | \
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PDO_VAR_MAX_VOLT(max_mv) | PDO_VAR_MAX_CURR(max_ma))
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enum pd_apdo_type {
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APDO_TYPE_PPS = 0,
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};
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#define PDO_APDO_TYPE_SHIFT 28 /* Only valid value currently is 0x0 - PPS */
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#define PDO_APDO_TYPE_MASK 0x3
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#define PDO_APDO_TYPE(t) ((t) << PDO_APDO_TYPE_SHIFT)
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#define PDO_PPS_APDO_MAX_VOLT_SHIFT 17 /* 100mV units */
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#define PDO_PPS_APDO_MIN_VOLT_SHIFT 8 /* 100mV units */
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#define PDO_PPS_APDO_MAX_CURR_SHIFT 0 /* 50mA units */
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#define PDO_PPS_APDO_VOLT_MASK 0xff
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#define PDO_PPS_APDO_CURR_MASK 0x7f
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#define PDO_PPS_APDO_MIN_VOLT(mv) \
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((((mv) / 100) & PDO_PPS_APDO_VOLT_MASK) << PDO_PPS_APDO_MIN_VOLT_SHIFT)
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#define PDO_PPS_APDO_MAX_VOLT(mv) \
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((((mv) / 100) & PDO_PPS_APDO_VOLT_MASK) << PDO_PPS_APDO_MAX_VOLT_SHIFT)
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#define PDO_PPS_APDO_MAX_CURR(ma) \
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((((ma) / 50) & PDO_PPS_APDO_CURR_MASK) << PDO_PPS_APDO_MAX_CURR_SHIFT)
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#define PDO_PPS_APDO(min_mv, max_mv, max_ma) \
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(PDO_TYPE(PDO_TYPE_APDO) | PDO_APDO_TYPE(APDO_TYPE_PPS) | \
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PDO_PPS_APDO_MIN_VOLT(min_mv) | PDO_PPS_APDO_MAX_VOLT(max_mv) | \
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PDO_PPS_APDO_MAX_CURR(max_ma))
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static inline enum pd_pdo_type pdo_type(u32 pdo)
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{
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return (pdo >> PDO_TYPE_SHIFT) & PDO_TYPE_MASK;
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}
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static inline unsigned int pdo_fixed_voltage(u32 pdo)
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{
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return ((pdo >> PDO_FIXED_VOLT_SHIFT) & PDO_VOLT_MASK) * 50;
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}
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static inline unsigned int pdo_min_voltage(u32 pdo)
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{
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return ((pdo >> PDO_VAR_MIN_VOLT_SHIFT) & PDO_VOLT_MASK) * 50;
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}
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static inline unsigned int pdo_max_voltage(u32 pdo)
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{
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return ((pdo >> PDO_VAR_MAX_VOLT_SHIFT) & PDO_VOLT_MASK) * 50;
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}
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static inline unsigned int pdo_max_current(u32 pdo)
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{
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return ((pdo >> PDO_VAR_MAX_CURR_SHIFT) & PDO_CURR_MASK) * 10;
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}
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static inline unsigned int pdo_max_power(u32 pdo)
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{
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return ((pdo >> PDO_BATT_MAX_PWR_SHIFT) & PDO_PWR_MASK) * 250;
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}
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static inline enum pd_apdo_type pdo_apdo_type(u32 pdo)
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{
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return (pdo >> PDO_APDO_TYPE_SHIFT) & PDO_APDO_TYPE_MASK;
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}
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static inline unsigned int pdo_pps_apdo_min_voltage(u32 pdo)
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{
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return ((pdo >> PDO_PPS_APDO_MIN_VOLT_SHIFT) &
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PDO_PPS_APDO_VOLT_MASK) * 100;
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}
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static inline unsigned int pdo_pps_apdo_max_voltage(u32 pdo)
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{
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return ((pdo >> PDO_PPS_APDO_MAX_VOLT_SHIFT) &
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PDO_PPS_APDO_VOLT_MASK) * 100;
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}
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static inline unsigned int pdo_pps_apdo_max_current(u32 pdo)
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{
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return ((pdo >> PDO_PPS_APDO_MAX_CURR_SHIFT) &
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PDO_PPS_APDO_CURR_MASK) * 50;
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}
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/* RDO: Request Data Object */
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#define RDO_OBJ_POS_SHIFT 28
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#define RDO_OBJ_POS_MASK 0x7
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#define RDO_GIVE_BACK BIT(27) /* Supports reduced operating current */
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#define RDO_CAP_MISMATCH BIT(26) /* Not satisfied by source caps */
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#define RDO_USB_COMM BIT(25) /* USB communications capable */
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#define RDO_NO_SUSPEND BIT(24) /* USB Suspend not supported */
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#define RDO_PWR_MASK 0x3ff
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#define RDO_CURR_MASK 0x3ff
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#define RDO_FIXED_OP_CURR_SHIFT 10
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#define RDO_FIXED_MAX_CURR_SHIFT 0
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#define RDO_OBJ(idx) (((idx) & RDO_OBJ_POS_MASK) << RDO_OBJ_POS_SHIFT)
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#define PDO_FIXED_OP_CURR(ma) ((((ma) / 10) & RDO_CURR_MASK) << RDO_FIXED_OP_CURR_SHIFT)
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#define PDO_FIXED_MAX_CURR(ma) ((((ma) / 10) & RDO_CURR_MASK) << RDO_FIXED_MAX_CURR_SHIFT)
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#define RDO_FIXED(idx, op_ma, max_ma, flags) \
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(RDO_OBJ(idx) | (flags) | \
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PDO_FIXED_OP_CURR(op_ma) | PDO_FIXED_MAX_CURR(max_ma))
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#define RDO_BATT_OP_PWR_SHIFT 10 /* 250mW units */
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#define RDO_BATT_MAX_PWR_SHIFT 0 /* 250mW units */
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#define RDO_BATT_OP_PWR(mw) ((((mw) / 250) & RDO_PWR_MASK) << RDO_BATT_OP_PWR_SHIFT)
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#define RDO_BATT_MAX_PWR(mw) ((((mw) / 250) & RDO_PWR_MASK) << RDO_BATT_MAX_PWR_SHIFT)
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#define RDO_BATT(idx, op_mw, max_mw, flags) \
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(RDO_OBJ(idx) | (flags) | \
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RDO_BATT_OP_PWR(op_mw) | RDO_BATT_MAX_PWR(max_mw))
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#define RDO_PROG_VOLT_MASK 0x7ff
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#define RDO_PROG_CURR_MASK 0x7f
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#define RDO_PROG_VOLT_SHIFT 9
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#define RDO_PROG_CURR_SHIFT 0
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#define RDO_PROG_VOLT_MV_STEP 20
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#define RDO_PROG_CURR_MA_STEP 50
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#define PDO_PROG_OUT_VOLT(mv) \
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((((mv) / RDO_PROG_VOLT_MV_STEP) & RDO_PROG_VOLT_MASK) << RDO_PROG_VOLT_SHIFT)
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#define PDO_PROG_OP_CURR(ma) \
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((((ma) / RDO_PROG_CURR_MA_STEP) & RDO_PROG_CURR_MASK) << RDO_PROG_CURR_SHIFT)
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#define RDO_PROG(idx, out_mv, op_ma, flags) \
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(RDO_OBJ(idx) | (flags) | \
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PDO_PROG_OUT_VOLT(out_mv) | PDO_PROG_OP_CURR(op_ma))
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static inline unsigned int rdo_index(u32 rdo)
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{
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return (rdo >> RDO_OBJ_POS_SHIFT) & RDO_OBJ_POS_MASK;
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}
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static inline unsigned int rdo_op_current(u32 rdo)
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{
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return ((rdo >> RDO_FIXED_OP_CURR_SHIFT) & RDO_CURR_MASK) * 10;
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}
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static inline unsigned int rdo_max_current(u32 rdo)
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{
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return ((rdo >> RDO_FIXED_MAX_CURR_SHIFT) &
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RDO_CURR_MASK) * 10;
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}
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|
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static inline unsigned int rdo_op_power(u32 rdo)
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|
{
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return ((rdo >> RDO_BATT_OP_PWR_SHIFT) & RDO_PWR_MASK) * 250;
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}
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|
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static inline unsigned int rdo_max_power(u32 rdo)
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|
{
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return ((rdo >> RDO_BATT_MAX_PWR_SHIFT) & RDO_PWR_MASK) * 250;
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}
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|
|
|
/* USB PD timers and counters */
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#define PD_T_NO_RESPONSE 5000 /* 4.5 - 5.5 seconds */
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#define PD_T_DB_DETECT 10000 /* 10 - 15 seconds */
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#define PD_T_SEND_SOURCE_CAP 150 /* 100 - 200 ms */
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#define PD_T_SENDER_RESPONSE 60 /* 24 - 30 ms, relaxed */
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|
#define PD_T_SOURCE_ACTIVITY 45
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|
#define PD_T_SINK_ACTIVITY 135
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|
#define PD_T_SINK_WAIT_CAP 240
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|
#define PD_T_PS_TRANSITION 500
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|
#define PD_T_SRC_TRANSITION 35
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|
#define PD_T_DRP_SNK 40
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|
#define PD_T_DRP_SRC 30
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|
#define PD_T_PS_SOURCE_OFF 920
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|
#define PD_T_PS_SOURCE_ON 480
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|
#define PD_T_PS_HARD_RESET 30
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|
#define PD_T_SRC_RECOVER 760
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|
#define PD_T_SRC_RECOVER_MAX 1000
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|
#define PD_T_SRC_TURN_ON 275
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|
#define PD_T_SAFE_0V 650
|
|
#define PD_T_VCONN_SOURCE_ON 100
|
|
#define PD_T_SINK_REQUEST 100 /* 100 ms minimum */
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|
#define PD_T_ERROR_RECOVERY 100 /* minimum 25 is insufficient */
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|
#define PD_T_SRCSWAPSTDBY 625 /* Maximum of 650ms */
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|
#define PD_T_NEWSRC 250 /* Maximum of 275ms */
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|
|
|
#define PD_T_DRP_TRY 100 /* 75 - 150 ms */
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|
#define PD_T_DRP_TRYWAIT 600 /* 400 - 800 ms */
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|
|
|
#define PD_T_CC_DEBOUNCE 200 /* 100 - 200 ms */
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|
#define PD_T_PD_DEBOUNCE 20 /* 10 - 20 ms */
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|
|
|
#define PD_N_CAPS_COUNT (PD_T_NO_RESPONSE / PD_T_SEND_SOURCE_CAP)
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#define PD_N_HARD_RESET_COUNT 2
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|
|
|
#endif /* __LINUX_USB_PD_H */
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