0x00160000
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/*
 * Copyright 2015-2017 Google, Inc
 */

#ifndef __LINUX_USB_PD_H
#define __LINUX_USB_PD_H

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/usb/typec.h>

/* USB PD Messages */
enum pd_ctrl_msg_type {
	/* 0 Reserved */
	PD_CTRL_GOOD_CRC = 1,
	PD_CTRL_GOTO_MIN = 2,
	PD_CTRL_ACCEPT = 3,
	PD_CTRL_REJECT = 4,
	PD_CTRL_PING = 5,
	PD_CTRL_PS_RDY = 6,
	PD_CTRL_GET_SOURCE_CAP = 7,
	PD_CTRL_GET_SINK_CAP = 8,
	PD_CTRL_DR_SWAP = 9,
	PD_CTRL_PR_SWAP = 10,
	PD_CTRL_VCONN_SWAP = 11,
	PD_CTRL_WAIT = 12,
	PD_CTRL_SOFT_RESET = 13,
	/* 14-15 Reserved */
	PD_CTRL_NOT_SUPP = 16,
	PD_CTRL_GET_SOURCE_CAP_EXT = 17,
	PD_CTRL_GET_STATUS = 18,
	PD_CTRL_FR_SWAP = 19,
	PD_CTRL_GET_PPS_STATUS = 20,
	PD_CTRL_GET_COUNTRY_CODES = 21,
	/* 22-23 Reserved */
	PD_CTRL_GET_REVISION = 24,
	/* 25-31 Reserved */
};

enum pd_data_msg_type {
	/* 0 Reserved */
	PD_DATA_SOURCE_CAP = 1,
	PD_DATA_REQUEST = 2,
	PD_DATA_BIST = 3,
	PD_DATA_SINK_CAP = 4,
	PD_DATA_BATT_STATUS = 5,
	PD_DATA_ALERT = 6,
	PD_DATA_GET_COUNTRY_INFO = 7,
	PD_DATA_ENTER_USB = 8,
	/* 9-11 Reserved */
	PD_DATA_REVISION = 12,
	/* 13-14 Reserved */
	PD_DATA_VENDOR_DEF = 15,
	/* 16-31 Reserved */
};

enum pd_ext_msg_type {
	/* 0 Reserved */
	PD_EXT_SOURCE_CAP_EXT = 1,
	PD_EXT_STATUS = 2,
	PD_EXT_GET_BATT_CAP = 3,
	PD_EXT_GET_BATT_STATUS = 4,
	PD_EXT_BATT_CAP = 5,
	PD_EXT_GET_MANUFACTURER_INFO = 6,
	PD_EXT_MANUFACTURER_INFO = 7,
	PD_EXT_SECURITY_REQUEST = 8,
	PD_EXT_SECURITY_RESPONSE = 9,
	PD_EXT_FW_UPDATE_REQUEST = 10,
	PD_EXT_FW_UPDATE_RESPONSE = 11,
	PD_EXT_PPS_STATUS = 12,
	PD_EXT_COUNTRY_INFO = 13,
	PD_EXT_COUNTRY_CODES = 14,
	/* 15-31 Reserved */
};

#define PD_REV10	0x0
#define PD_REV20	0x1
#define PD_REV30	0x2
#define PD_MAX_REV	PD_REV30

#define PD_HEADER_EXT_HDR	BIT(15)
#define PD_HEADER_CNT_SHIFT	12
#define PD_HEADER_CNT_MASK	0x7
#define PD_HEADER_ID_SHIFT	9
#define PD_HEADER_ID_MASK	0x7
#define PD_HEADER_PWR_ROLE	BIT(8)
#define PD_HEADER_REV_SHIFT	6
#define PD_HEADER_REV_MASK	0x3
#define PD_HEADER_DATA_ROLE	BIT(5)
#define PD_HEADER_TYPE_SHIFT	0
#define PD_HEADER_TYPE_MASK	0x1f

#define PD_HEADER(type, pwr, data, rev, id, cnt, ext_hdr)		\
	((((type) & PD_HEADER_TYPE_MASK) << PD_HEADER_TYPE_SHIFT) |	\
	 ((pwr) == TYPEC_SOURCE ? PD_HEADER_PWR_ROLE : 0) |		\
	 ((data) == TYPEC_HOST ? PD_HEADER_DATA_ROLE : 0) |		\
	 (rev << PD_HEADER_REV_SHIFT) |					\
	 (((id) & PD_HEADER_ID_MASK) << PD_HEADER_ID_SHIFT) |		\
	 (((cnt) & PD_HEADER_CNT_MASK) << PD_HEADER_CNT_SHIFT) |	\
	 ((ext_hdr) ? PD_HEADER_EXT_HDR : 0))

#define PD_HEADER_LE(type, pwr, data, rev, id, cnt) \
	cpu_to_le16(PD_HEADER((type), (pwr), (data), (rev), (id), (cnt), (0)))

static inline unsigned int pd_header_cnt(u16 header)
{
	return (header >> PD_HEADER_CNT_SHIFT) & PD_HEADER_CNT_MASK;
}

static inline unsigned int pd_header_cnt_le(__le16 header)
{
	return pd_header_cnt(le16_to_cpu(header));
}

static inline unsigned int pd_header_type(u16 header)
{
	return (header >> PD_HEADER_TYPE_SHIFT) & PD_HEADER_TYPE_MASK;
}

static inline unsigned int pd_header_type_le(__le16 header)
{
	return pd_header_type(le16_to_cpu(header));
}

static inline unsigned int pd_header_msgid(u16 header)
{
	return (header >> PD_HEADER_ID_SHIFT) & PD_HEADER_ID_MASK;
}

static inline unsigned int pd_header_msgid_le(__le16 header)
{
	return pd_header_msgid(le16_to_cpu(header));
}

static inline unsigned int pd_header_rev(u16 header)
{
	return (header >> PD_HEADER_REV_SHIFT) & PD_HEADER_REV_MASK;
}

static inline unsigned int pd_header_rev_le(__le16 header)
{
	return pd_header_rev(le16_to_cpu(header));
}

#define PD_EXT_HDR_CHUNKED		BIT(15)
#define PD_EXT_HDR_CHUNK_NUM_SHIFT	11
#define PD_EXT_HDR_CHUNK_NUM_MASK	0xf
#define PD_EXT_HDR_REQ_CHUNK		BIT(10)
#define PD_EXT_HDR_DATA_SIZE_SHIFT	0
#define PD_EXT_HDR_DATA_SIZE_MASK	0x1ff

#define PD_EXT_HDR(data_size, req_chunk, chunk_num, chunked)				\
	((((data_size) & PD_EXT_HDR_DATA_SIZE_MASK) << PD_EXT_HDR_DATA_SIZE_SHIFT) |	\
	 ((req_chunk) ? PD_