Google Git
Sign in
chromium / chromiumos / platform / ec / master / . / include / usb_pd.h
blob: 52557778cd08fa077647da4d072b1de486f42f2a [file] [log] [blame]
/* Copyright 2014 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.
*/
/* USB Power delivery module */
#ifndef __CROS_EC_USB_PD_H
#define __CROS_EC_USB_PD_H
#include <stdbool.h>
#include <stdint.h>
#include "common.h"
#include "ec_commands.h"
#include "usb_pd_tbt.h"
#include "usb_pd_tcpm.h"
#include "usb_pd_vdo.h"
/* PD Host command timeout */
#define PD_HOST_COMMAND_TIMEOUT_US SECOND
/*
* Define PD_PORT_TO_TASK_ID() and TASK_ID_TO_PD_PORT() macros to
* go between PD port number and task ID. Assume that TASK_ID_PD_C0 is the
* lowest task ID and IDs are on a continuous range.
*/
#if defined(HAS_TASK_PD_C0) && defined(CONFIG_USB_PD_PORT_MAX_COUNT)
#define PD_PORT_TO_TASK_ID(port) (TASK_ID_PD_C0 + (port))
#define TASK_ID_TO_PD_PORT(id) ((id) - TASK_ID_PD_C0)
#else
#define PD_PORT_TO_TASK_ID(port) -1 /* stub task ID */
#define TASK_ID_TO_PD_PORT(id) 0
#endif /* CONFIG_USB_PD_PORT_MAX_COUNT && HAS_TASK_PD_C0 */
enum pd_rx_errors {
PD_RX_ERR_INVAL = -1, /* Invalid packet */
PD_RX_ERR_HARD_RESET = -2, /* Got a Hard-Reset packet */
PD_RX_ERR_CRC = -3, /* CRC mismatch */
PD_RX_ERR_ID = -4, /* Invalid ID number */
PD_RX_ERR_UNSUPPORTED_SOP = -5, /* Unsupported SOP */
PD_RX_ERR_CABLE_RESET = -6 /* Got a Cable-Reset packet */
};
/* Events for USB PD task */
/* Outgoing packet event */
#define PD_EVENT_TX TASK_EVENT_CUSTOM_BIT(3)
/* CC line change event */
#define PD_EVENT_CC TASK_EVENT_CUSTOM_BIT(4)
/* TCPC has reset */
#define PD_EVENT_TCPC_RESET TASK_EVENT_CUSTOM_BIT(5)
/* DRP state has changed */
#define PD_EVENT_UPDATE_DUAL_ROLE TASK_EVENT_CUSTOM_BIT(6)
/*
* A task, other than the task owning the PD port, accessed the TCPC. The task
* that owns the port does not send itself this event.
*/
#define PD_EVENT_DEVICE_ACCESSED TASK_EVENT_CUSTOM_BIT(7)
/* Chipset power state changed */
#define PD_EVENT_POWER_STATE_CHANGE TASK_EVENT_CUSTOM_BIT(8)
/* Issue a Hard Reset. */
#define PD_EVENT_SEND_HARD_RESET TASK_EVENT_CUSTOM_BIT(9)
/* Prepare for sysjump */
#define PD_EVENT_SYSJUMP TASK_EVENT_CUSTOM_BIT(10)
/* Receive a Hard Reset. */
#define PD_EVENT_RX_HARD_RESET TASK_EVENT_CUSTOM_BIT(11)
/* MUX configured notification event */
#define PD_EVENT_AP_MUX_DONE TASK_EVENT_CUSTOM_BIT(12)
/* First free event on PD task */
#define PD_EVENT_FIRST_FREE_BIT 13
/* Ensure TCPC is out of low power mode before handling these events. */
#define PD_EXIT_LOW_POWER_EVENT_MASK \
(PD_EVENT_CC | \
PD_EVENT_UPDATE_DUAL_ROLE | \
PD_EVENT_POWER_STATE_CHANGE | \
PD_EVENT_TCPC_RESET)
/* --- PD data message helpers --- */
#define PDO_MAX_OBJECTS 7
#define PDO_MODES (PDO_MAX_OBJECTS - 1)
/* PDO : Power Data Object */
/*
* 1. The vSafe5V Fixed Supply Object shall always be the first object.
* 2. The remaining Fixed Supply Objects,
* if present, shall be sent in voltage order; lowest to highest.
* 3. The Battery Supply Objects,
* if present shall be sent in Minimum Voltage order; lowest to highest.
* 4. The Variable Supply (non battery) Objects,
* if present, shall be sent in Minimum Voltage order; lowest to highest.
* 5. (PD3.0) The Augmented PDO is defined to allow extension beyond the 4 PDOs
* above by examining bits <29:28> to determine the additional PDO function.
*
* Note: Some bits and decode macros are defined in ec_commands.h
*/
#define PDO_FIXED_SUSPEND BIT(28) /* USB Suspend supported */
#define PDO_FIXED_FRS_CURR_NOT_SUPPORTED (0 << 23)
#define PDO_FIXED_FRS_CURR_DFLT_USB_POWER (1 << 23)
#define PDO_FIXED_FRS_CURR_1A5_AT_5V (2 << 23)
#define PDO_FIXED_FRS_CURR_3A0_AT_5V (3 << 23)
#define PDO_FIXED_PEAK_CURR () /* [21..20] Peak current */
#define PDO_FIXED_VOLT(mv) (((mv)/50) << 10) /* Voltage in 50mV units */
#define PDO_FIXED_CURR(ma) (((ma)/10) << 0) /* Max current in 10mA units */
#define PDO_FIXED(mv, ma, flags) (PDO_FIXED_VOLT(mv) |\
PDO_FIXED_CURR(ma) | (flags))
#define PDO_VAR_MAX_VOLT(mv) ((((mv) / 50) & 0x3FF) << 20)
#define PDO_VAR_MIN_VOLT(mv) ((((mv) / 50) & 0x3FF) << 10)
#define PDO_VAR_OP_CURR(ma) ((((ma) / 10) & 0x3FF) << 0)
#define PDO_VAR(min_mv, max_mv, op_ma) \
(PDO_VAR_MIN_VOLT(min_mv) | \
PDO_VAR_MAX_VOLT(max_mv) | \
PDO_VAR_OP_CURR(op_ma) | \
PDO_TYPE_VARIABLE)
#define PDO_BATT_MAX_VOLT(mv) ((((mv) / 50) & 0x3FF) << 20)
#define PDO_BATT_MIN_VOLT(mv) ((((mv) / 50) & 0x3FF) << 10)
#define PDO_BATT_OP_POWER(mw) ((((mw) / 250) & 0x3FF) << 0)
#define PDO_BATT(min_mv, max_mv, op_mw) \
(PDO_BATT_MIN_VOLT(min_mv) | \
PDO_BATT_MAX_VOLT(max_mv) | \
PDO_BATT_OP_POWER(op_mw) | \
PDO_TYPE_BATTERY)
/* RDO : Request Data Object */
#define RDO_OBJ_POS(n) (((n) & 0x7) << 28)
#define RDO_POS(rdo) (((rdo) >> 28) & 0x7)
#define RDO_GIVE_BACK BIT(27)
#define RDO_CAP_MISMATCH BIT(26)
#define RDO_COMM_CAP BIT(25)
#define RDO_NO_SUSPEND BIT(24)
#define RDO_FIXED_VAR_OP_CURR(ma) ((((ma) / 10) & 0x3FF) << 10)
#define RDO_FIXED_VAR_MAX_CURR(ma) ((((ma) / 10) & 0x3FF) << 0)
#define RDO_BATT_OP_POWER(mw) ((((mw) / 250) & 0x3FF) << 10)
#define RDO_BATT_MAX_POWER(mw) ((((mw) / 250) & 0x3FF) << 10)
#define RDO_FIXED(n, op_ma, max_ma, flags) \
(RDO_OBJ_POS(n) | (flags) | \
RDO_FIXED_VAR_OP_CURR(op_ma) | \
RDO_FIXED_VAR_MAX_CURR(max_ma))
#define RDO_BATT(n, op_mw, max_mw, flags) \
(RDO_OBJ_POS(n) | (flags) | \
RDO_BATT_OP_POWER(op_mw) | \
RDO_BATT_MAX_POWER(max_mw))
/* BDO : BIST Data Object */
#define BDO_MODE_RECV (0 << 28)
#define BDO_MODE_TRANSMIT BIT(28)
#define BDO_MODE_COUNTERS (2 << 28)
#define BDO_MODE_CARRIER0 (3 << 28)
#define BDO_MODE_CARRIER1 (4 << 28)
#define BDO_MODE_CARRIER2 (5 << 28)
#define BDO_MODE_CARRIER3 (6 << 28)
#define BDO_MODE_EYE (7 << 28)
#define BDO(mode, cnt) ((mode) | ((cnt) & 0xFFFF))
#define BIST_MODE(n) ((n) >> 28)
#define BIST_ERROR_COUNTER(n) ((n) & 0xffff)
#define BIST_RECEIVER_MODE 0
#define BIST_TRANSMIT_MODE 1
#define BIST_RETURNED_COUNTER 2
#define BIST_CARRIER_MODE_0 3
#define BIST_CARRIER_MODE_1 4
#define BIST_CARRIER_MODE_2 5
#define BIST_CARRIER_MODE_3 6
#define BIST_EYE_PATTERN 7
#define BIST_TEST_DATA 8
#define SVID_DISCOVERY_MAX 16
/* Timers */
#define PD_T_SINK_TX (18*MSEC) /* between 16ms and 20 */
#define PD_T_CHUNKING_NOT_SUPPORTED (45*MSEC) /* between 40ms and 50ms */
#define PD_T_CHUNK_SENDER_RSP (24*MSEC) /* between 24ms and 30ms */
#define PD_T_CHUNK_SENDER_REQ (24*MSEC) /* between 24ms and 30ms */
#define PD_T_HARD_RESET_COMPLETE (5*MSEC) /* between 4ms and 5ms*/
#define PD_T_HARD_RESET_RETRY (1*MSEC) /* 1ms */
#define PD_T_SEND_SOURCE_CAP (100*MSEC) /* between 100ms and 200ms */
#define PD_T_SINK_WAIT_CAP (600*MSEC) /* between 310ms and 620ms */
#define PD_T_SINK_TRANSITION (35*MSEC) /* between 20ms and 35ms */
#define PD_T_SOURCE_ACTIVITY (45*MSEC) /* between 40ms and 50ms */
#define PD_T_SENDER_RESPONSE (30*MSEC) /* between 24ms and 30ms */
#define PD_T_PS_TRANSITION (500*MSEC) /* between 450ms and 550ms */
#define PD_T_PS_SOURCE_ON (480*MSEC) /* between 390ms and 480ms */
#define PD_T_PS_SOURCE_OFF (920*MSEC) /* between 750ms and 920ms */
#define PD_T_PS_HARD_RESET (25*MSEC) /* between 25ms and 35ms */
#define PD_T_ERROR_RECOVERY (240*MSEC) /* min 240ms if sourcing VConn */
#define PD_T_CC_DEBOUNCE (100*MSEC) /* between 100ms and 200ms */
/* DRP_SNK + DRP_SRC must be between 50ms and 100ms with 30%-70% duty cycle */
#define PD_T_DRP_SNK (40*MSEC) /* toggle time for sink DRP */
#define PD_T_DRP_SRC (30*MSEC) /* toggle time for source DRP */
#define PD_T_DEBOUNCE (15*MSEC) /* between 10ms and 20ms */
#define PD_T_TRY_CC_DEBOUNCE (15*MSEC) /* between 10ms and 20ms */
#define PD_T_SINK_ADJ (55*MSEC) /* between tPDDebounce and 60ms */
#define PD_T_SRC_RECOVER (760*MSEC) /* between 660ms and 1000ms */
#define PD_T_SRC_RECOVER_MAX (1000*MSEC) /* 1000ms */
#define PD_T_SRC_TURN_ON (275*MSEC) /* 275ms */
#define PD_T_SAFE_0V (650*MSEC) /* 650ms */
#define PD_T_NO_RESPONSE (5500*MSEC) /* between 4.5s and 5.5s */
#define PD_T_BIST_TRANSMIT (50*MSEC) /* 50ms (for task_wait arg) */
#define PD_T_BIST_RECEIVE (60*MSEC) /* 60ms (time to process bist) */
#define PD_T_BIST_CONT_MODE (60*MSEC) /* 30ms to 60ms */
#define PD_T_VCONN_SOURCE_ON (100*MSEC) /* 100ms */
#define PD_T_DRP_TRY (125*MSEC) /* between 75ms and 150ms */
#define PD_T_TRY_TIMEOUT (550*MSEC) /* between 550ms and 1100ms */
#define PD_T_TRY_WAIT (600*MSEC) /* Wait time for TryWait.SNK */
#define PD_T_SINK_REQUEST (100*MSEC) /* 100ms before next request */
#define PD_T_PD_DEBOUNCE (15*MSEC) /* between 10ms and 20ms */
#define PD_T_CHUNK_SENDER_RESPONSE (25*MSEC) /* 25ms */
#define PD_T_CHUNK_SENDER_REQUEST (25*MSEC) /* 25ms */
#define PD_T_SWAP_SOURCE_START (25*MSEC) /* Min of 20ms */
#define PD_T_RP_VALUE_CHANGE (20*MSEC) /* 20ms */
#define PD_T_SRC_DISCONNECT (15*MSEC) /* 15ms */
#define PD_T_VCONN_STABLE (50*MSEC) /* 50ms */
#define PD_T_DISCOVER_IDENTITY (45*MSEC) /* between 40ms and 50ms */
#define PD_T_SYSJUMP (1000*MSEC) /* 1s */
#define PD_T_PR_SWAP_WAIT (100*MSEC) /* tPRSwapWait 100ms */
/* number of edges and time window to detect CC line is not idle */
#define PD_RX_TRANSITION_COUNT 3
#define PD_RX_TRANSITION_WINDOW 20 /* between 12us and 20us */
/* from USB Type-C Specification Table 5-1 */
#define PD_T_AME (1*SECOND) /* timeout from UFP attach to Alt Mode Entry */
/* VDM Timers ( USB PD Spec Rev2.0 Table 6-30 )*/
#define PD_T_VDM_BUSY (50*MSEC) /* at least 50ms */
#define PD_T_VDM_E_MODE (25*MSEC) /* enter/exit the same max */
#define PD_T_VDM_RCVR_RSP (15*MSEC) /* max of 15ms */
#define PD_T_VDM_SNDR_RSP (30*MSEC) /* max of 30ms */
#define PD_T_VDM_WAIT_MODE_E (100*MSEC) /* enter/exit the same max */
/* CTVPD Timers ( USB Type-C ECN Table 4-27 ) */
#define PD_T_VPDDETACH (20*MSEC) /* max of 20*MSEC */
#define PD_T_VPDCTDD (4*MSEC) /* max of 4ms */
#define PD_T_VPDDISABLE (25*MSEC) /* min of 25ms */
/* Voltage thresholds in mV (Table 7-24, PD 3.0 Version 2.0 Spec) */
#define PD_V_SAFE0V_MAX 800
#define PD_V_SAFE5V_MIN 4750
/* USB Type-C voltages in mV (Table 4-3, USB Type-C Release 2.0 Spec) */
#define PD_V_SINK_DISCONNECT_MAX 3670
/* TODO(b/149530538): Add equation for vSinkDisconnectPD */
/* Maximum voltage in mV offered by PD 3.0 Version 2.0 Spec */
#define PD_REV3_MAX_VOLTAGE 20000
/* Power in mW at which we will automatically charge from a DRP partner */
#define PD_DRP_CHARGE_POWER_MIN 27000
/* function table for entered mode */
struct amode_fx {
int (*status)(int port, uint32_t *payload);
int (*config)(int port, uint32_t *payload);
};
/* function table for alternate mode capable responders */
struct svdm_response {
/**
* Gets VDM response messages
*
* @param port USB-C Port number
* @param payload buffer used to pass input data and store output data
* @return number of data objects in payload; <0 means BUSY;
* =0 means NAK.
*/
int (*identity)(int port, uint32_t *payload);
int (*svids)(int port, uint32_t *payload);
int (*modes)(int port, uint32_t *payload);
int (*enter_mode)(int port, uint32_t *payload);
int (*exit_mode)(int port, uint32_t *payload);
struct amode_fx *amode;
};
/*
* State of discovery
*
* Note: Discovery needed must be 0 to meet expectations that it be the default
* value after resetting connection information via memset.
*/
enum pd_discovery_state {
PD_DISC_NEEDED = 0, /* Cable or partner still needs to be probed */
PD_DISC_COMPLETE, /* Successfully probed, valid to read VDO */
PD_DISC_FAIL, /* Cable did not respond, or Discover* NAK */
};
/* Mode discovery state for a particular SVID with a particular transmit type */
struct svid_mode_data {
/* The SVID for which modes are discovered */
uint16_t svid;
/* The number of modes discovered for this SVID */
int mode_cnt;
/* The discovered mode VDOs */
uint32_t mode_vdo[PDO_MODES];
/* State of mode discovery for this SVID */
enum pd_discovery_state discovery;
};
struct svdm_amode_fx {
uint16_t svid;
int (*enter)(int port, uint32_t mode_caps);
int (*status)(int port, uint32_t *payload);
int (*config)(int port, uint32_t *payload);
void (*post_config)(int port);
int (*attention)(int port, uint32_t *payload);
void (*exit)(int port);
};
/* defined in <board>/usb_pd_policy.c */
/* All UFP_U should have */
extern const struct svdm_response svdm_rsp;
/* All DFP_U should have */
extern const struct svdm_amode_fx supported_modes[];
extern const int supported_modes_cnt;
/* 4 entry rw_hash table of type-C devices that AP has firmware updates for. */
#ifdef CONFIG_COMMON_RUNTIME
#define RW_HASH_ENTRIES 4
extern struct ec_params_usb_pd_rw_hash_entry rw_hash_table[RW_HASH_ENTRIES];
#endif /* CONFIG_COMMON_RUNTIME */
/*
* defined in common/usb_common.c
* This variable is used in a couple of overridable functions
* in usb_common code. If the routines are overridden then
* this variable should be the same as that used in the common
* code.
*/
extern uint64_t svdm_hpd_deadline[];
/* DFP data needed to support alternate mode entry and exit */
struct svdm_amode_data {
const struct svdm_amode_fx *fx;
/* VDM object position */
int opos;
/* mode capabilities specific to SVID amode. */
struct svid_mode_data *data;
};
enum hpd_event {
hpd_none,
hpd_low,
hpd_high,
hpd_irq,
};
/* DisplayPort flags */
#define DP_FLAGS_DP_ON BIT(0) /* Display port mode is on */
#define DP_FLAGS_HPD_HI_PENDING BIT(1) /* Pending HPD_HI */
/* Discover Identity ACK contents after headers */
union disc_ident_ack {
struct {
struct id_header_vdo_rev20 idh;
struct cert_stat_vdo cert;
struct product_vdo product;
union product_type_vdo1 product_t1;
union product_type_vdo2 product_t2;
uint32_t product_t3;
};
uint32_t raw_value[PDO_MAX_OBJECTS - 1];
};
BUILD_ASSERT(sizeof(union disc_ident_ack) ==
sizeof(uint32_t) * (PDO_MAX_OBJECTS - 1));
/* Discover Identity data - ACK plus discovery state */
struct identity_data {
union disc_ident_ack response;
enum pd_discovery_state discovery;
};
/* supported alternate modes */
enum pd_alternate_modes {
PD_AMODE_GOOGLE,
PD_AMODE_DISPLAYPORT,
PD_AMODE_INTEL,
/* not a real mode */
PD_AMODE_COUNT,
};
/* Discover and possibly enter modes for all SOP* communications when enabled */
#ifdef CONFIG_USB_PD_DECODE_SOP
#define DISCOVERY_TYPE_COUNT (TCPC_TX_SOP_PRIME + 1)
#define AMODE_TYPE_COUNT (TCPC_TX_SOP_PRIME_PRIME + 1)
#else
#define DISCOVERY_TYPE_COUNT (TCPC_TX_SOP + 1)
#define AMODE_TYPE_COUNT (TCPC_TX_SOP + 1)
#endif
/* Discovery results for a port partner (SOP) or cable plug (SOP') */
struct pd_discovery {
/* Identity data */
union disc_ident_ack identity;
/* Identity VDO count */
int identity_cnt;
/* Supported SVIDs and corresponding mode VDOs */
struct svid_mode_data svids[SVID_DISCOVERY_MAX];
/* index of SVID currently being operated on */
int svid_idx;
/* Count of SVIDs discovered */
int svid_cnt;
/* Identity discovery state */
enum pd_discovery_state identity_discovery;
/* SVID discovery state */
enum pd_discovery_state svids_discovery;
};
/* Active modes for a partner (SOP, SOP', or SOP'') */
struct partner_active_modes {
/* Active modes */
struct svdm_amode_data amodes[PD_AMODE_COUNT];
/* Next index to insert DFP alternate mode into amodes */
int amode_idx;
};
/*
* VDO : Vendor Defined Message Object
* VDM object is minimum of VDM header + 6 additional data objects.
*/
#define VDO_HDR_SIZE 1
#define VDO_MAX_SIZE 7
#define VDM_VER10 0
#define VDM_VER20 1
#define PD_VDO_INVALID -1
/*
* VDM header
* ----------
* <31:16> :: SVID
* <15> :: VDM type ( 1b == structured, 0b == unstructured )
* <14:13> :: Structured VDM version (00b == Rev 2.0, 01b == Rev 3.0 )
* <12:11> :: reserved
* <10:8> :: object position (1-7 valid ... used for enter/exit mode only)
* <7:6> :: command type (SVDM only?)
* <5> :: reserved (SVDM), command type (UVDM)
* <4:0> :: command
*/
#define VDO(vid, type, custom) \
(((vid) << 16) | \
((type) << 15) | \
((custom) & 0x7FFF))
#define VDO_SVDM_TYPE BIT(15)
#define VDO_SVDM_VERS(x) (x << 13)
#define VDO_OPOS(x) (x << 8)
#define VDO_CMDT(x) (x << 6)
#define VDO_OPOS_MASK VDO_OPOS(0x7)
#define VDO_CMDT_MASK VDO_CMDT(0x3)
#define CMDT_INIT 0
#define CMDT_RSP_ACK 1
#define CMDT_RSP_NAK 2
#define CMDT_RSP_BUSY 3
/* reserved for SVDM ... for Google UVDM */
#define VDO_SRC_INITIATOR (0 << 5)
#define VDO_SRC_RESPONDER BIT(5)
#define CMD_DISCOVER_IDENT 1
#define CMD_DISCOVER_SVID 2
#define CMD_DISCOVER_MODES 3
#define CMD_ENTER_MODE 4
#define CMD_EXIT_MODE 5
#define CMD_ATTENTION 6
#define CMD_DP_STATUS 16
#define CMD_DP_CONFIG 17
#define VDO_CMD_VENDOR(x) (((10 + (x)) & 0x1f))
/* ChromeOS specific commands */
#define VDO_CMD_VERSION VDO_CMD_VENDOR(0)
#define VDO_CMD_SEND_INFO VDO_CMD_VENDOR(1)
#define VDO_CMD_READ_INFO VDO_CMD_VENDOR(2)
#define VDO_CMD_REBOOT VDO_CMD_VENDOR(5)
#define VDO_CMD_FLASH_ERASE VDO_CMD_VENDOR(6)
#define VDO_CMD_FLASH_WRITE VDO_CMD_VENDOR(7)
#define VDO_CMD_ERASE_SIG VDO_CMD_VENDOR(8)
#define VDO_CMD_PING_ENABLE VDO_CMD_VENDOR(10)
#define VDO_CMD_CURRENT VDO_CMD_VENDOR(11)
#define VDO_CMD_FLIP VDO_CMD_VENDOR(12)
#define VDO_CMD_GET_LOG VDO_CMD_VENDOR(13)
#define VDO_CMD_CCD_EN VDO_CMD_VENDOR(14)
#define PD_VDO_VID(vdo) ((vdo) >> 16)
#define PD_VDO_SVDM(vdo) (((vdo) >> 15) & 1)
#define PD_VDO_OPOS(vdo) (((vdo) >> 8) & 0x7)
#define PD_VDO_CMD(vdo) ((vdo) & 0x1f)
#define PD_VDO_CMDT(vdo) (((vdo) >> 6) & 0x3)
/*
* SVDM Identity request -> response
*
* Request is simply properly formatted SVDM header
*
* Response is 4 data objects.
* In case of Active cables, the response is 5 data objects:
* [0] :: SVDM header
* [1] :: Identitiy header
* [2] :: Cert Stat VDO
* [3] :: (Product | Cable) VDO
* [4] :: AMA VDO
* [4] :: Product type UFP1 VDO
* [4] :: Product type Cable VDO 1
* [5] :: Product type UFP2 VDO
* [5] :: Product type Cable VDO 2
* [6] :: Product type DFP VDO
*
*/
#define VDO_INDEX_HDR 0
#define VDO_INDEX_IDH 1
#define VDO_INDEX_CSTAT 2
#define VDO_INDEX_CABLE 3
#define VDO_INDEX_PRODUCT 3
#define VDO_INDEX_AMA 4
#define VDO_INDEX_PTYPE_UFP1_VDO 4
#define VDO_INDEX_PTYPE_CABLE1 4
#define VDO_INDEX_PTYPE_UFP2_VDO 4
#define VDO_INDEX_PTYPE_CABLE2 5
#define VDO_INDEX_PTYPE_DFP_VDO 6
#define VDO_I(name) VDO_INDEX_##name
#define VDO_IDH(usbh, usbd, ptype, is_modal, vid) \
((usbh) << 31 | (usbd) << 30 | ((ptype) & 0x7) << 27 \
| (is_modal) << 26 | ((vid) & 0xffff))
#define PD_IDH_PTYPE(vdo) (((vdo) >> 27) & 0x7)
#define PD_IDH_IS_MODAL(vdo) (((vdo) >> 26) & 0x1)
#define PD_IDH_VID(vdo) ((vdo) & 0xffff)
#define VDO_CSTAT(tid) ((tid) & 0xfffff)
#define PD_CSTAT_TID(vdo) ((vdo) & 0xfffff)
#define VDO_PRODUCT(pid, bcd) (((pid) & 0xffff) << 16 | ((bcd) & 0xffff))
#define PD_PRODUCT_PID(vdo) (((vdo) >> 16) & 0xffff)
/*
* Message id starts from 0 to 7. If last_msg_id is initialized to 0,
* it will lead to repetitive message id with first received packet,
* so initialize it with an invalid value 0xff.
*/
#define INVALID_MSG_ID_COUNTER 0xff
/* PD Stack Version */
enum pd_stack_version {
TCPMV1 = 1,
TCPMV2,
};
/* Protocol revision */
enum pd_rev_type {
PD_REV10,
PD_REV20,
PD_REV30,
};
#ifdef CONFIG_USB_PD_REV30
#define PD_REVISION PD_REV30
#else
#define PD_REVISION PD_REV20
#endif
#if defined(CONFIG_USB_PD_TCPMV1)
#define PD_STACK_VERSION TCPMV1
#elif defined(CONFIG_USB_PD_TCPMV2)
#define PD_STACK_VERSION TCPMV2
#endif
/* Cable structure for storing cable attributes */
struct pd_cable {
/* Note: the following fields are used by TCPMv1 */
/* Last received SOP' message id counter*/
uint8_t last_sop_p_msg_id;
/* Last received SOP'' message id counter*/
uint8_t last_sop_p_p_msg_id;
/* Cable flags. See CABLE_FLAGS_* */
uint8_t flags;
/* For storing Discover mode response from device */
union tbt_mode_resp_device dev_mode_resp;
/* For storing Discover mode response from cable */
union tbt_mode_resp_cable cable_mode_resp;
/* Cable revision */
enum pd_rev_type rev;
};
/* Note: These flags are only used for TCPMv1 */
/* Check if Thunderbolt-compatible mode enabled */
#define CABLE_FLAGS_TBT_COMPAT_ENABLE BIT(0)
/* Flag to limit speed to TBT Gen 2 passive cable */
#define CABLE_FLAGS_TBT_COMPAT_LIMIT_SPEED BIT(1)
/* Flag for checking if device is USB4.0 capable */
#define CABLE_FLAGS_USB4_CAPABLE BIT(2)
/* Flag for entering ENTER_USB mode */
#define CABLE_FLAGS_ENTER_USB_MODE BIT(3)
/*
* SVDM Discover SVIDs request -> response
*
* Request is properly formatted VDM Header with discover SVIDs command.
* Response is a set of SVIDs of all all supported SVIDs with all zero's to
* mark the end of SVIDs. If more than 12 SVIDs are supported command SHOULD be
* repeated.
*/
#define VDO_SVID(svid0, svid1) (((svid0) & 0xffff) << 16 | ((svid1) & 0xffff))
#define PD_VDO_SVID_SVID0(vdo) ((vdo) >> 16)
#define PD_VDO_SVID_SVID1(vdo) ((vdo) & 0xffff)
/*
* Google modes capabilities
* <31:8> : reserved
* <7:0> : mode
*/
#define VDO_MODE_GOOGLE(mode) (mode & 0xff)
#define MODE_GOOGLE_FU 1 /* Firmware Update mode */
/*
* Mode Capabilities
*
* Number of VDOs supplied is SID dependent (but <= 6 VDOS?)
*/
#define VDO_MODE_CNT_DISPLAYPORT 1
/*
* DisplayPort modes capabilities
* -------------------------------
* <31:24> : SBZ
* <23:16> : UFP_D pin assignment supported
* <15:8> : DFP_D pin assignment supported
* <7> : USB 2.0 signaling (0b=yes, 1b=no)
* <6> : Plug | Receptacle (0b == plug, 1b == receptacle)
* <5:2> : xxx1: Supports DPv1.3, xx1x Supports USB Gen 2 signaling
* Other bits are reserved.
* <1:0> : signal direction ( 00b=rsv, 01b=sink, 10b=src 11b=both )
*/
#define VDO_MODE_DP(snkp, srcp, usb, gdr, sign, sdir) \
(((snkp) & 0xff) << 16 | ((srcp) & 0xff) << 8 \
| ((usb) & 1) << 7 | ((gdr) & 1) << 6 | ((sign) & 0xF) << 2 \
| ((sdir) & 0x3))
#define MODE_DP_DFP_PIN_SHIFT 8
#define MODE_DP_UFP_PIN_SHIFT 16
/* Pin configs B/D/F support multi-function */
#define MODE_DP_PIN_MF_MASK 0x2a
/* Pin configs A/B support BR2 signaling levels */
#define MODE_DP_PIN_BR2_MASK 0x3
/* Pin configs C/D/E/F support DP signaling levels */
#define MODE_DP_PIN_DP_MASK 0x3c
/* Pin configs A/B/C/D/E/F */
#define MODE_DP_PIN_CAPS_MASK 0x3f
#define MODE_DP_V13 0x1
#define MODE_DP_GEN2 0x2
#define MODE_DP_SNK 0x1
#define MODE_DP_SRC 0x2
#define MODE_DP_BOTH 0x3
#define MODE_DP_CABLE_SHIFT 6
/*
* Determine which pin assignments are valid for DP
*
* Based on whether the DP adapter identifies itself as a plug (permanently
* attached cable) or a receptacle, the pin assignments may be in the DFP_D
* field or the UFP_D field.
*
* Refer to DisplayPort Alt Mode On USB Type-C Standard version 1.0, table 5-2
* depending on state of receptacle bit, use pins for DFP_D (if receptacle==0)
* or UFP_D (if receptacle==1)
* Also refer to DisplayPort Alt Mode Capabilities Clarification (4/30/2015)
*/
#define PD_DP_PIN_CAPS(x) ((((x) >> MODE_DP_CABLE_SHIFT) & 0x1) \
? (((x) >> MODE_DP_UFP_PIN_SHIFT) & MODE_DP_PIN_CAPS_MASK) \
: (((x) >> MODE_DP_DFP_PIN_SHIFT) & MODE_DP_PIN_CAPS_MASK))
/*
* DisplayPort Status VDO
* ----------------------
* <31:9> : SBZ
* <8> : IRQ_HPD : 1 == irq arrived since last message otherwise 0.
* <7> : HPD state : 0 = HPD_LOW, 1 == HPD_HIGH
* <6> : Exit DP Alt mode: 0 == maintain, 1 == exit
* <5> : USB config : 0 == maintain current, 1 == switch to USB from DP
* <4> : Multi-function preference : 0 == no pref, 1 == MF preferred.
* <3> : enabled : is DPout on/off.
* <2> : power low : 0 == normal or LPM disabled, 1 == DP disabled for LPM
* <1:0> : connect status : 00b == no (DFP|UFP)_D is connected or disabled.
* 01b == DFP_D connected, 10b == UFP_D connected, 11b == both.
*/
#define VDO_DP_STATUS(irq, lvl, amode, usbc, mf, en, lp, conn) \
(((irq) & 1) << 8 | ((lvl) & 1) << 7 | ((amode) & 1) << 6 \
| ((usbc) & 1) << 5 | ((mf) & 1) << 4 | ((en) & 1) << 3 \
| ((lp) & 1) << 2 | ((conn & 0x3) << 0))
#define PD_VDO_DPSTS_MF_MASK BIT(4)
#define PD_VDO_DPSTS_HPD_IRQ(x) (((x) >> 8) & 1)
#define PD_VDO_DPSTS_HPD_LVL(x) (((x) >> 7) & 1)
#define PD_VDO_DPSTS_MF_PREF(x) (((x) >> 4) & 1)
/* Per DisplayPort Spec v1.3 Section 3.3 */
#define HPD_USTREAM_DEBOUNCE_LVL (2*MSEC)
#define HPD_USTREAM_DEBOUNCE_IRQ (250)
#define HPD_DSTREAM_DEBOUNCE_IRQ (500) /* between 500-1000us */
/*
* DisplayPort Configure VDO
* -------------------------
* <31:24> : SBZ
* <23:16> : SBZ
* <15:8> : Pin assignment requested. Choose one from mode caps.
* <7:6> : SBZ
* <5:2> : signalling : 1h == DP v1.3, 2h == Gen 2
* Oh is only for USB, remaining values are reserved
* <1:0> : cfg : 00 == USB, 01 == DFP_D, 10 == UFP_D, 11 == reserved
*/
#define VDO_DP_CFG(pin, sig, cfg) \
(((pin) & 0xff) << 8 | ((sig) & 0xf) << 2 | ((cfg) & 0x3))
#define PD_DP_CFG_DPON(x) (((x & 0x3) == 1) || ((x & 0x3) == 2))
/*
* Get the pin assignment mask
* for backward compatibility, if it is null,
* get the former sink pin assignment we used to be in <23:16>.
*/
#define PD_DP_CFG_PIN(x) ((((x) >> 8) & 0xff) ? (((x) >> 8) & 0xff) \
: (((x) >> 16) & 0xff))
/*
* ChromeOS specific PD device Hardware IDs. Used to identify unique
* products and used in VDO_INFO. Note this field is 10 bits.
*/
#define USB_PD_HW_DEV_ID_RESERVED 0
#define USB_PD_HW_DEV_ID_ZINGER 1
#define USB_PD_HW_DEV_ID_MINIMUFFIN 2
#define USB_PD_HW_DEV_ID_DINGDONG 3
#define USB_PD_HW_DEV_ID_HOHO 4
#define USB_PD_HW_DEV_ID_HONEYBUNS 5
/*
* ChromeOS specific VDO_CMD_READ_INFO responds with device info including:
* RW Hash: First 20 bytes of SHA-256 of RW (20 bytes)
* HW Device ID: unique descriptor for each ChromeOS model (2 bytes)
* top 6 bits are minor revision, bottom 10 bits are major
* SW Debug Version: Software version useful for debugging (15 bits)
* IS RW: True if currently in RW, False otherwise (1 bit)
*/
#define VDO_INFO(id, id_minor, ver, is_rw) ((id_minor) << 26 \
| ((id) & 0x3ff) << 16 \
| ((ver) & 0x7fff) << 1 \
| ((is_rw) & 1))
#define VDO_INFO_HW_DEV_ID(x) ((x) >> 16)
#define VDO_INFO_SW_DBG_VER(x) (((x) >> 1) & 0x7fff)
#define VDO_INFO_IS_RW(x) ((x) & 1)
#define HW_DEV_ID_MAJ(x) (x & 0x3ff)
#define HW_DEV_ID_MIN(x) ((x) >> 10)
/* USB-IF SIDs */
#define USB_SID_PD 0xff00 /* power delivery */
#define USB_SID_DISPLAYPORT 0xff01
#define USB_GOOGLE_TYPEC_URL "http://www.google.com/chrome/devices/typec"
/* USB Vendor ID assigned to Google Inc. */
#define USB_VID_GOOGLE 0x18d1
/* Other Vendor IDs */
#define USB_VID_APPLE 0x05ac
#define USB_PID1_APPLE 0x1012
#define USB_PID2_APPLE 0x1013
#define USB_VID_HP 0x03F0
#define USB_PID_HP_USB_C_DOCK_G5 0x036B
#define USB_PID_HP_USB_C_A_UNIV_DOCK_G2 0x096B
#define USB_PID_HP_E24D_DOCK_MONITOR 0x0467
#define USB_PID_HP_ELITE_E233_MONITOR 0x1747
#define USB_PID_HP_E244D_DOCK_MONITOR 0x056D
#define USB_PID_HP_E274D_DOCK_MONITOR 0x016E
#define USB_VID_INTEL 0x8087
/* Timeout for message receive in microseconds */
#define USB_PD_RX_TMOUT_US 1800
/* --- Protocol layer functions --- */
enum pd_states {
PD_STATE_DISABLED, /* C0 */
PD_STATE_SUSPENDED, /* C1 */
PD_STATE_SNK_DISCONNECTED, /* C2 */
PD_STATE_SNK_DISCONNECTED_DEBOUNCE, /* C3 */
PD_STATE_SNK_HARD_RESET_RECOVER, /* C4 */
PD_STATE_SNK_DISCOVERY, /* C5 */
PD_STATE_SNK_REQUESTED, /* C6 */
PD_STATE_SNK_TRANSITION, /* C7 */
PD_STATE_SNK_READY, /* C8 */
PD_STATE_SNK_SWAP_INIT, /* C9 */
PD_STATE_SNK_SWAP_SNK_DISABLE, /* C10 */
PD_STATE_SNK_SWAP_SRC_DISABLE, /* C11 */
PD_STATE_SNK_SWAP_STANDBY, /* C12 */
PD_STATE_SNK_SWAP_COMPLETE, /* C13 */
PD_STATE_SRC_DISCONNECTED, /* C14 */
PD_STATE_SRC_DISCONNECTED_DEBOUNCE, /* C15 */
PD_STATE_SRC_HARD_RESET_RECOVER, /* C16 */
PD_STATE_SRC_STARTUP, /* C17 */
PD_STATE_SRC_DISCOVERY, /* C18 */
PD_STATE_SRC_NEGOCIATE, /* C19 */
PD_STATE_SRC_ACCEPTED, /* C20 */
PD_STATE_SRC_POWERED, /* C21 */
PD_STATE_SRC_TRANSITION, /* C22 */
PD_STATE_SRC_READY, /* C23 */
PD_STATE_SRC_GET_SINK_CAP, /* C24 */
PD_STATE_DR_SWAP, /* C25 */
PD_STATE_SRC_SWAP_INIT, /* C26 */
PD_STATE_SRC_SWAP_SNK_DISABLE, /* C27 */
PD_STATE_SRC_SWAP_SRC_DISABLE, /* C28 */
PD_STATE_SRC_SWAP_STANDBY, /* C29 */
PD_STATE_VCONN_SWAP_SEND, /* C30 */
PD_STATE_VCONN_SWAP_INIT, /* C31 */
PD_STATE_VCONN_SWAP_READY, /* C32 */
PD_STATE_SOFT_RESET, /* C33 */
PD_STATE_HARD_RESET_SEND, /* C34 */
PD_STATE_HARD_RESET_EXECUTE, /* C35 */
PD_STATE_BIST_RX, /* C36 */
PD_STATE_BIST_TX, /* C37 */
PD_STATE_DRP_AUTO_TOGGLE, /* C38 */
PD_STATE_ENTER_USB, /* C39 */
/* Number of states. Not an actual state. */
PD_STATE_COUNT,
};
/* Generate compile-time errors for unsupported states */
#ifndef CONFIG_USB_PD_DUAL_ROLE
#define PD_STATE_SNK_DISCONNECTED UNSUPPORTED_PD_STATE_SNK_DISCONNECTED
#define PD_STATE_SNK_DISCONNECTED_DEBOUNCE UNSUPPORTED_SNK_DISCONNECTED_DEBOUNCE
#define PD_STATE_SNK_HARD_RESET_RECOVER UNSUPPORTED_SNK_HARD_RESET_RECOVER
#define PD_STATE_SNK_DISCOVERY UNSUPPORTED_PD_STATE_SNK_DISCOVERY
#define PD_STATE_SNK_REQUESTED UNSUPPORTED_PD_STATE_SNK_REQUESTED
#define PD_STATE_SNK_TRANSITION UNSUPPORTED_PD_STATE_SNK_TRANSITION
#define PD_STATE_SNK_READY UNSUPPORTED_PD_STATE_SNK_READY
#define PD_STATE_SNK_SWAP_INIT UNSUPPORTED_PD_STATE_SNK_SWAP_INIT
#define PD_STATE_SNK_SWAP_SNK_DISABLE UNSUPPORTED_PD_STATE_SNK_SWAP_SNK_DISABLE
#define PD_STATE_SNK_SWAP_SRC_DISABLE UNSUPPORTED_PD_STATE_SNK_SWAP_SRC_DISABLE
#define PD_STATE_SNK_SWAP_STANDBY UNSUPPORTED_PD_STATE_SNK_SWAP_STANDBY
#define PD_STATE_SNK_SWAP_COMPLETE UNSUPPORTED_PD_STATE_SNK_SWAP_COMPLETE
#define PD_STATE_SRC_SWAP_INIT UNSUPPORTED_PD_STATE_SRC_SWAP_INIT
#define PD_STATE_SRC_SWAP_SNK_DISABLE UNSUPPORTED_PD_STATE_SRC_SWAP_SNK_DISABLE
#define PD_STATE_SRC_SWAP_SRC_DISABLE UNSUPPORTED_PD_STATE_SRC_SWAP_SRC_DISABLE
#define PD_STATE_SRC_SWAP_STANDBY UNSUPPORTED_PD_STATE_SRC_SWAP_STANDBY
#endif /* CONFIG_USB_PD_DUAL_ROLE */
/* Generate compile-time errors for unsupported states */
#if !defined(CONFIG_USBC_VCONN_SWAP) || !defined(CONFIG_USB_PD_DUAL_ROLE)
#define PD_STATE_VCONN_SWAP_SEND UNSUPPORTED_PD_STATE_VCONN_SWAP_SEND
#define PD_STATE_VCONN_SWAP_INIT UNSUPPORTED_PD_STATE_VCONN_SWAP_INIT
#define PD_STATE_VCONN_SWAP_READY UNSUPPORTED_PD_STATE_VCONN_SWAP_READY
#endif
/* Generate compile-time errors for unsupported states */
#ifndef CONFIG_COMMON_RUNTIME
#define PD_STATE_BIST_RX UNSUPPORTED_PD_STATE_BIST_RX
#define PD_STATE_BIST_TX UNSUPPORTED_PD_STATE_BIST_TX
#endif
/* Generate compile-time errors for unsupported states */
#ifndef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
#define PD_STATE_DRP_AUTO_TOGGLE UNSUPPORTED_PD_STATE_DRP_AUTO_TOGGLE
#endif
#ifdef CONFIG_USB_PD_TCPMV1
/* Flags used for TCPMv1 */
#define PD_FLAGS_PING_ENABLED BIT(0) /* SRC_READY pings enabled */
#define PD_FLAGS_PARTNER_DR_POWER BIT(1) /* port partner is dualrole power */
#define PD_FLAGS_PARTNER_DR_DATA BIT(2) /* port partner is dualrole data */
#define PD_FLAGS_CHECK_IDENTITY BIT(3) /* discover identity in READY */
#define PD_FLAGS_SNK_CAP_RECVD BIT(4) /* sink capabilities received */
#define PD_FLAGS_TCPC_DRP_TOGGLE BIT(5) /* TCPC-controlled DRP toggling */
#define PD_FLAGS_EXPLICIT_CONTRACT BIT(6) /* explicit pwr contract in place */
#define PD_FLAGS_VBUS_NEVER_LOW BIT(7) /* VBUS input has never been low */
#define PD_FLAGS_PREVIOUS_PD_CONN BIT(8) /* previously PD connected */
#define PD_FLAGS_CHECK_PR_ROLE BIT(9) /* check power role in READY */
#define PD_FLAGS_CHECK_DR_ROLE BIT(10)/* check data role in READY */
#define PD_FLAGS_PARTNER_UNCONSTR BIT(11)/* port partner unconstrained pwr */
#define PD_FLAGS_VCONN_ON BIT(12)/* vconn is being sourced */
#define PD_FLAGS_TRY_SRC BIT(13)/* Try.SRC states are active */
#define PD_FLAGS_PARTNER_USB_COMM BIT(14)/* port partner is USB comms */
#define PD_FLAGS_UPDATE_SRC_CAPS BIT(15)/* send new source capabilities */
#define PD_FLAGS_TS_DTS_PARTNER BIT(16)/* partner has rp/rp or rd/rd */
/*
* These PD_FLAGS_LPM* flags track the software state (PD_LPM_FLAGS_REQUESTED)
* and hardware state (PD_LPM_FLAGS_ENGAGED) of the TCPC low power mode.
* PD_FLAGS_LPM_TRANSITION is set while the HW is transitioning into or out of
* low power (when PD_LPM_FLAGS_ENGAGED is changing).
*/
#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
#define PD_FLAGS_LPM_REQUESTED BIT(17)/* Tracks SW LPM state */
#define PD_FLAGS_LPM_ENGAGED BIT(18)/* Tracks HW LPM state */
#define PD_FLAGS_LPM_TRANSITION BIT(19)/* Tracks HW LPM transition */
#define PD_FLAGS_LPM_EXIT BIT(19)/* Tracks HW LPM exit */
#endif
/*
* Tracks whether port negotiation may have stalled due to not starting reset
* timers in SNK_DISCOVERY
*/
#define PD_FLAGS_SNK_WAITING_BATT BIT(21)
/* Check vconn state in READY */
#define PD_FLAGS_CHECK_VCONN_STATE BIT(22)
#endif /* CONFIG_USB_PD_TCPMV1 */
/* Per-port battery backed RAM flags */
#define PD_BBRMFLG_EXPLICIT_CONTRACT BIT(0)
#define PD_BBRMFLG_POWER_ROLE BIT(1)
#define PD_BBRMFLG_DATA_ROLE BIT(2)
#define PD_BBRMFLG_VCONN_ROLE BIT(3)
#define PD_BBRMFLG_DBGACC_ROLE BIT(4)
/* Initial value for CC debounce variable */
#define PD_CC_UNSET -1
enum pd_dual_role_states {
/* While disconnected, toggle between src and sink */
PD_DRP_TOGGLE_ON,
/* Stay in src until disconnect, then stay in sink forever */
PD_DRP_TOGGLE_OFF,
/* Stay in current power role, don't switch. No auto-toggle support */
PD_DRP_FREEZE,
/* Switch to sink */
PD_DRP_FORCE_SINK,
/* Switch to source */
PD_DRP_FORCE_SOURCE,
};
/*
* Device Policy Manager Requests.
* NOTE: These are usually set by host commands from the AP.
*/
enum pd_dpm_request {
DPM_REQUEST_DR_SWAP = BIT(0),
DPM_REQUEST_PR_SWAP = BIT(1),
DPM_REQUEST_VCONN_SWAP = BIT(2),
DPM_REQUEST_GOTO_MIN = BIT(3),
DPM_REQUEST_SRC_CAP_CHANGE = BIT(4),
DPM_REQUEST_GET_SNK_CAPS = BIT(5),
DPM_REQUEST_SEND_PING = BIT(6),
DPM_REQUEST_SOURCE_CAP = BIT(7),
DPM_REQUEST_NEW_POWER_LEVEL = BIT(8),
DPM_REQUEST_VDM = BIT(9),
DPM_REQUEST_BIST_RX = BIT(10),
DPM_REQUEST_BIST_TX = BIT(11),
DPM_REQUEST_SNK_STARTUP = BIT(12),
DPM_REQUEST_SRC_STARTUP = BIT(13),
DPM_REQUEST_HARD_RESET_SEND = BIT(14),
DPM_REQUEST_SOFT_RESET_SEND = BIT(15),
DPM_REQUEST_PORT_DISCOVERY = BIT(16),
DPM_REQUEST_SEND_ALERT = BIT(17),
DPM_REQUEST_ENTER_USB = BIT(18),
DPM_REQUEST_GET_SRC_CAPS = BIT(19),
DPM_REQUEST_EXIT_MODES = BIT(20),
};
/**
* Get dual role state
*
* @param port Port number from which to get state
* @return Current dual-role state, from enum pd_dual_role_states
*/
enum pd_dual_role_states pd_get_dual_role(int port);
/**
* Set dual role state, from among enum pd_dual_role_states
*
* @param port Port number of which to set state
* @param state New state of dual-role port, selected from
* enum pd_dual_role_states
*/
void pd_set_dual_role(int port, enum pd_dual_role_states state);
/**
* Get current data role
*
* @param port Port number from which to get role
*/
enum pd_data_role pd_get_data_role(int port);
/**
* Get current power role
*
* @param port Port number from which to get power role
*/
enum pd_power_role pd_get_power_role(int port);
/**
* Check if the battery is capable of powering the system
*
* @return true if capable of, else false.
*/
bool pd_is_battery_capable(void);
/**
* Check if PD is capable of trying as source
*
* @return true if capable of, else false.
*/
bool pd_is_try_source_capable(void);
/**
* Request for VCONN swap
*
* @param port USB-C Port number
*/
void pd_request_vconn_swap(int port);
/**
* Get the current CC line states from PD task
*
* @param port USB-C Port number
* @return CC state
*/
enum pd_cc_states pd_get_task_cc_state(int port);
/**
* Get the current PD state of USB-C port
*
* @param port USB-C Port number
* @return PD state
* Note: TCPMv1 returns enum pd_states
* TCPMv2 returns enum usb_tc_state
*/
uint8_t pd_get_task_state(int port);
/**
* Get the current PD state name of USB-C port
*
* @param port USB-C Port number
* @return Pointer to PD state name
*/
const char *pd_get_task_state_name(int port);
/**
* Get current VCONN state of USB-C port
*
* @param port USB-C Port number
* @return true if VCONN is on else false
*/
bool pd_get_vconn_state(int port);
/**
* Check if port partner is dual role power
*
* @param port USB-C Port number
* @return true if partner is dual role power else false
*/
bool pd_get_partner_dual_role_power(int port);
/**
* Check if port partner is unconstrained power
*
* @param port USB-C Port number
* @return true if partner is unconstrained power else false
*/
bool pd_get_partner_unconstr_power(int port);
/**
* Check if poower role swap may be needed on AP resume.
*
* @param port USB-C Port number
*/
void pd_resume_check_pr_swap_needed(int port);
/* Control Message type */
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 */
/* Used for REV 3.0 */
PD_CTRL_NOT_SUPPORTED = 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,
/* 22-31 Reserved */
};
/* Control message types which always mark the start of an AMS */
#define PD_CTRL_AMS_START_MASK ((1 << PD_CTRL_GOTO_MIN) | \
(1 << PD_CTRL_GET_SOURCE_CAP) | \
(1 << PD_CTRL_GET_SINK_CAP) | \
(1 << PD_CTRL_DR_SWAP) | \
(1 << PD_CTRL_PR_SWAP) | \
(1 << PD_CTRL_VCONN_SWAP) | \
(1 << PD_CTRL_GET_SOURCE_CAP_EXT) | \
(1 << PD_CTRL_GET_STATUS) | \
(1 << PD_CTRL_FR_SWAP) | \
(1 << PD_CTRL_GET_PPS_STATUS) | \
(1 << PD_CTRL_GET_COUNTRY_CODES))
/* Battery Status Data Object fields for REV 3.0 */
#define BSDO_CAP_UNKNOWN 0xffff
#define BSDO_CAP(n) (((n) & 0xffff) << 16)
#define BSDO_INVALID BIT(8)
#define BSDO_PRESENT BIT(9)
#define BSDO_DISCHARGING BIT(10)
#define BSDO_IDLE BIT(11)
/* Battery Capability offsets for 16-bit array indexes */
#define BCDB_VID 0
#define BCDB_PID 1
#define BCDB_DESIGN_CAP 2
#define BCDB_FULL_CAP 3
#define BCDB_BATT_TYPE 4
/*
* Get Battery Cap Message fields for REV 3.0 (assumes extended header is
* present in first two bytes)
*/
#define BATT_CAP_REF(n) (((n) >> 16) & 0xff)
/* Extended message type for REV 3.0 */
enum pd_ext_msg_type {
/* 0 Reserved */
PD_EXT_SOURCE_CAP = 1,
PD_EXT_STATUS = 2,
PD_EXT_GET_BATTERY_CAP = 3,
PD_EXT_GET_BATTERY_STATUS = 4,
PD_EXT_BATTERY_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_FIRMWARE_UPDATE_REQUEST = 10,
PD_EXT_FIRMWARE_UPDATE_RESPONSE = 11,
PD_EXT_PPS_STATUS = 12,
PD_EXT_COUNTRY_INFO = 13,
PD_EXT_COUNTRY_CODES = 14,
/* 15-31 Reserved */
};
/* Alert Data Object fields for REV 3.0 */
#define ADO_OVP_EVENT BIT(30)
#define ADO_SOURCE_INPUT_CHANGE BIT(29)
#define ADO_OPERATING_CONDITION_CHANGE BIT(28)
#define ADO_OTP_EVENT BIT(27)
#define ADO_OCP_EVENT BIT(26)
#define ADO_BATTERY_STATUS_CHANGE BIT(25)
#define ADO_FIXED_BATTERIES(n) ((n & 0xf) << 20)
#define ADO_HOT_SWAPPABLE_BATTERIES(n) ((n & 0xf) << 16)
/* Data message type */
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,
/* 5-14 Reserved for REV 2.0 */
PD_DATA_BATTERY_STATUS = 5,
PD_DATA_ALERT = 6,
PD_DATA_GET_COUNTRY_INFO = 7,
/* 8-14 Reserved for REV 3.0 */
PD_DATA_ENTER_USB = 8,
PD_DATA_VENDOR_DEF = 15,
};
/*
* Cable plug. See 6.2.1.1.7 Cable Plug. Only applies to SOP' and SOP".
* Replaced by pd_power_role for SOP packets.
*/
enum pd_cable_plug {
PD_PLUG_FROM_DFP_UFP = 0,
PD_PLUG_FROM_CABLE = 1
};
enum cable_outlet {
CABLE_PLUG = 0,
CABLE_RECEPTACLE = 1,
};
/* Vconn role */
#define PD_ROLE_VCONN_OFF 0
#define PD_ROLE_VCONN_ON 1
/* chunk is a request or response in REV 3.0 */
#define CHUNK_RESPONSE 0
#define CHUNK_REQUEST 1
/* collision avoidance Rp values in REV 3.0 */
#define SINK_TX_OK TYPEC_RP_3A0
#define SINK_TX_NG TYPEC_RP_1A5
/* Port role at startup */
#ifndef PD_ROLE_DEFAULT
#ifdef CONFIG_USB_PD_DUAL_ROLE
#define PD_ROLE_DEFAULT(port) PD_ROLE_SINK
#else
#define PD_ROLE_DEFAULT(port) PD_ROLE_SOURCE
#endif
#endif
/* Port default state at startup */
#ifdef CONFIG_USB_PD_DUAL_ROLE
#define PD_DEFAULT_STATE(port) ((PD_ROLE_DEFAULT(port) == PD_ROLE_SOURCE) ? \
PD_STATE_SRC_DISCONNECTED : \
PD_STATE_SNK_DISCONNECTED)
#else
#define PD_DEFAULT_STATE(port) PD_STATE_SRC_DISCONNECTED
#endif
/* build extended message header */
/* All extended messages are chunked, so set bit 15 */
#define PD_EXT_HEADER(cnum, rchk, dsize) \
(BIT(15) | ((cnum) << 11) | \
((rchk) << 10) | (dsize))
/* build message header */
#define PD_HEADER(type, prole, drole, id, cnt, rev, ext) \
((type) | ((rev) << 6) | \
((drole) << 5) | ((prole) << 8) | \
((id) << 9) | ((cnt) << 12) | ((ext) << 15))
/* Used for processing pd header */
#define PD_HEADER_EXT(header) (((header) >> 15) & 1)
#define PD_HEADER_CNT(header) (((header) >> 12) & 7)
/*
* NOTE: bit 4 was added in PD 3.0, and should be reserved and set to 0 in PD
* 2.0 messages
*/
#define PD_HEADER_TYPE(header) ((header) & 0x1F)
#define PD_HEADER_ID(header) (((header) >> 9) & 7)
#define PD_HEADER_PROLE(header) (((header) >> 8) & 1)
#define PD_HEADER_REV(header) (((header) >> 6) & 3)
#define PD_HEADER_DROLE(header) (((header) >> 5) & 1)
/*
* The message header is a 16-bit value that's stored in a 32-bit data type.
* SOP* is encoded in bits 31 to 28 of the 32-bit data type.
* NOTE: This is not part of the PD spec.
*/
#define PD_HEADER_GET_SOP(header) (((header) >> 28) & 0xf)
#define PD_HEADER_SOP(sop) (((sop) & 0xf) << 28)
enum pd_msg_type {
PD_MSG_SOP,
PD_MSG_SOP_PRIME,
PD_MSG_SOP_PRIME_PRIME,
PD_MSG_SOP_DBG_PRIME,
PD_MSG_SOP_DBG_PRIME_PRIME,
PD_MSG_SOP_CBL_RST,
};
/* Used for processing pd extended header */
#define PD_EXT_HEADER_CHUNKED(header) (((header) >> 15) & 1)
#define PD_EXT_HEADER_CHUNK_NUM(header) (((header) >> 11) & 0xf)
#define PD_EXT_HEADER_REQ_CHUNK(header) (((header) >> 10) & 1)
#define PD_EXT_HEADER_DATA_SIZE(header) ((header) & 0x1ff)
/* Used to get extended header from the first 32-bit word of the message */
#define GET_EXT_HEADER(msg) (msg & 0xffff)
/* Extended message constants (PD 3.0, Rev. 2.0, section 6.13) */
#define PD_MAX_EXTENDED_MSG_LEN 260
#define PD_MAX_EXTENDED_MSG_CHUNK_LEN 26
/* K-codes for special symbols */
#define PD_SYNC1 0x18
#define PD_SYNC2 0x11
#define PD_SYNC3 0x06
#define PD_RST1 0x07
#define PD_RST2 0x19
#define PD_EOP 0x0D
/* Minimum PD supply current (mA) */
#define PD_MIN_MA 500
/* Minimum PD voltage (mV) */
#define PD_MIN_MV 5000
/* No connect voltage threshold for sources based on Rp */
#define PD_SRC_DEF_VNC_MV 1600
#define PD_SRC_1_5_VNC_MV 1600
#define PD_SRC_3_0_VNC_MV 2600
/* Rd voltage threshold for sources based on Rp */
#define PD_SRC_DEF_RD_THRESH_MV 200
#define PD_SRC_1_5_RD_THRESH_MV 400
#define PD_SRC_3_0_RD_THRESH_MV 800
/* Voltage threshold to detect connection when presenting Rd */
#define PD_SNK_VA_MV 250
/* --- Policy layer functions --- */
/** Schedules the interrupt handler for the TCPC on a high priority task. */
void schedule_deferred_pd_interrupt(int port);
/**
* Get current PD Revision
*
* @param port USB-C port number
* @param type USB-C port partner
* @return PD_REV10 for PD Revision 1.0
* PD_REV20 for PD Revision 2.0
* PD_REV30 for PD Revision 3.0
*/
int pd_get_rev(int port, enum tcpm_transmit_type type);
/**
* Get current PD VDO Version of Structured VDM
*
* @param port USB-C port number
* @param type USB-C port partner
* @return VDM_VER10 for VDM Version 1.0
* VDM_VER20 for VDM Version 2.0
*/
int pd_get_vdo_ver(int port, enum tcpm_transmit_type type);
/**
* Get transmit retry count for active PD revision.
*
* @param port The port to query
* @param type The partner to query (SOP, SOP', or SOP'')
* @return The number of retries to perform when transmitting.
*/
int pd_get_retry_count(int port, enum tcpm_transmit_type type);
/**
* Check if max voltage request is allowed (only used if
* CONFIG_USB_PD_CHECK_MAX_REQUEST_ALLOWED is defined).
*
* @return True if max voltage request allowed, False otherwise
*/
int pd_is_max_request_allowed(void);
/**
* Waits for the TCPC to exit low power mode (including re-initializing) if it
* is currently in low power mode. If not, then the function immediately
* returns.
*
* @param port USB-C port number
*/
void pd_wait_exit_low_power(int port);
/**
* Informs the TCPM state machine that code within the EC has accessed the TCPC
* via its communication bus (e.g. i2c). This is important to keep track of as
* accessing a TCPC may pull the hardware out of low-power mode.
*
* Note: Call this function after finished accessing the hardware.
*
* @param port USB-C port number
*/
void pd_device_accessed(int port);
/**
* Prevents the TCPC from going back into low power mode. Invocations must be
* called in a pair from the same task, otherwise the TCPC will never re-enter
* low power mode.
*
* Note: This will not wake the device up if it is in LPM.
*
* @param port USB-C port number
* @param prevent 1 to prevent this port from entering LPM
*/
void pd_prevent_low_power_mode(int port, int prevent);
/**
* Process source capabilities packet
*
* @param port USB-C port number
* @param cnt the number of Power Data Objects.
* @param src_caps Power Data Objects representing the source capabilities.
*/
void pd_process_source_cap(int port, int cnt, uint32_t *src_caps);
/**
* Reduce the sink power consumption to a minimum value.
*
* @param port USB-C port number
* @param ma reduce current to minimum value.
* @param mv reduce voltage to minimum value.
*/
void pd_snk_give_back(int port, uint32_t * const ma, uint32_t * const mv);
/**
* Put a cap on the max voltage requested as a sink.
* @param mv maximum voltage in millivolts.
*/
void pd_set_max_voltage(unsigned mv);
/**
* Get the max voltage that can be requested as set by pd_set_max_voltage().
* @return max voltage
*/
unsigned pd_get_max_voltage(void);
/**
* Check if this board supports the given input voltage.
*
* @mv input voltage
* @return 1 if voltage supported, 0 if not
*/
__override_proto int pd_is_valid_input_voltage(int mv);
/**
* Request a new operating voltage.
*
* @param rdo Request Data Object with the selected operating point.
* @param port The port which the request came in on.
* @return EC_SUCCESS if we can get the requested voltage/OP, <0 else.
*/
int pd_check_requested_voltage(uint32_t rdo, const int port);
/**
* Run board specific checks on request message
*
* @param rdo the request data object word sent by the sink.
* @param pdo_cnt the total number of source PDOs.
* @return EC_SUCCESS if request is ok , <0 else.
*/
__override_proto int pd_board_check_request(uint32_t rdo, int pdo_cnt);
/**
* Select a new output voltage.
*
* param idx index of the new voltage in the source PDO table.
*/
__override_proto void pd_transition_voltage(int idx);
/**
* Go back to the default/safe state of the power supply
*
* @param port USB-C port number
*/
void pd_power_supply_reset(int port);
/**
* Enable or disable VBUS discharge for a given port.
*
* @param port USB-C port number
* @enable 1 if enabling discharge, 0 if disabling
*/
void pd_set_vbus_discharge(int port, int enable);
/**
* Enable the power supply output after the ready delay.
*
* @param port USB-C port number
* @return EC_SUCCESS if the power supply is ready, <0 else.
*/
int pd_set_power_supply_ready(int port);
/**
* Ask the specified voltage from the PD source.
*
* It triggers a new negotiation sequence with the source.
* @param port USB-C port number
* @param mv request voltage in millivolts.
*/
void pd_request_source_voltage(int port, int mv);
/**
* Set a voltage limit from the PD source.
*
* If the source is currently active, it triggers a new negotiation.
* @param port USB-C port number
* @param mv limit voltage in millivolts.
*/
void pd_set_external_voltage_limit(int port, int mv);
/**
* Set the PD input current limit.
*
* @param port USB-C port number
* @param max_ma Maximum current limit
* @param supply_voltage Voltage at which current limit is applied
*/
void pd_set_input_current_limit(int port, uint32_t max_ma,
uint32_t supply_voltage);
/**
* Update the power contract if it exists.
*
* @param port USB-C port number.
*/
void pd_update_contract(int port);
/* Encode DTS status of port partner in current limit parameter */
typedef uint32_t typec_current_t;
#define TYPEC_CURRENT_DTS_MASK BIT(31)
#define TYPEC_CURRENT_ILIM_MASK (~TYPEC_CURRENT_DTS_MASK)
/**
* Set the type-C input current limit.
*
* @param port USB-C port number
* @param max_ma Maximum current limit
* @param supply_voltage Voltage at which current limit is applied
*/
__override_proto void typec_set_input_current_limit(int port,
typec_current_t max_ma,
uint32_t supply_voltage);
/**
* Set the type-C current limit when sourcing current..
*
* @param port USB-C port number
* @param rp One of enum tcpc_rp_value (eg TYPEC_RP_3A0) defining the limit.
*/
void typec_set_source_current_limit(int port, enum tcpc_rp_value rp);
/**
* Verify board specific health status : current, voltages...
*
* @return EC_SUCCESS if the board is good, <0 else.
*/
__override_proto int pd_board_checks(void);
/**
* Return if VBUS is detected on type-C port
*
* @param port USB-C port number
* @return VBUS is detected
*/
int pd_snk_is_vbus_provided(int port);
/**
* Notify PD protocol that VBUS has gone low
*
* @param port USB-C port number
*/
void pd_vbus_low(int port);
/**
* Check if power swap is allowed.
*
* @param port USB-C port number
* @return True if power swap is allowed, False otherwise
*/
__override_proto int pd_check_power_swap(int port);
/**
* Check if data swap is allowed.
*
* @param port USB-C port number
* @param data_role current data role
* @return True if data swap is allowed, False otherwise
*/
__override_proto int pd_check_data_swap(int port,
enum pd_data_role data_role);
/**
* Check if vconn swap is allowed.
*
* @param port USB-C port number
* @return True if vconn swap is allowed, False otherwise
*/
int pd_check_vconn_swap(int port);
/**
* Check current power role for potential power swap
*
* @param port USB-C port number
* @param pr_role Our power role
* @param flags PD flags
*/
__override_proto void pd_check_pr_role(int port,
enum pd_power_role pr_role,
int flags);
/**
* Check current data role for potential data swap
*
* @param port USB-C port number
* @param dr_role Our data role
* @param flags PD flags
*/
__override_proto void pd_check_dr_role(int port,
enum pd_data_role dr_role,
int flags);
/**
* Check for a potential Vconn swap if the port isn't
* supplying Vconn
*
* @param port USB-C port number
* @param flags PD flags
*/
__override_proto void pd_try_execute_vconn_swap(int port, int flags);
/**
* Check if we should charge from this device. This is
* basically a allow-list for chargers that are dual-role,
* don't set the unconstrained bit, but we should charge
* from by default.
*
* @param vid Port partner Vendor ID
* @param pid Port partner Product ID
*/
int pd_charge_from_device(uint16_t vid, uint16_t pid);
/**
* Execute data swap.
*
* @param port USB-C port number
* @param data_role new data role
*/
__override_proto void pd_execute_data_swap(int port,
enum pd_data_role data_role);
/**
* Get desired dual role state when chipset is suspended.
* Under some circumstances we are not allowed to be source
* during suspend. This function should return appropriate state.
*/
__override_proto enum pd_dual_role_states pd_get_drp_state_in_suspend(void);
/**
* Get PD device info used for VDO_CMD_SEND_INFO / VDO_CMD_READ_INFO
*
* @param info_data pointer to info data array
*/
void pd_get_info(uint32_t *info_data);
/**
* Handle Vendor Defined Messages
*
* @param port USB-C port number
* @param cnt number of data objects in the payload.
* @param payload payload data.
* @param rpayload pointer to the data to send back.
* @return if >0, number of VDOs to send back.
*/
__override_proto int pd_custom_vdm(int port, int cnt, uint32_t *payload,
uint32_t **rpayload);
/**
* Handle Structured Vendor Defined Messages
*
* @param port USB-C port number
* @param cnt number of data objects in the payload.
* @param payload payload data.
* @param rpayload pointer to the data to send back.
* @param head message header
* @param rtype pointer to the type of message (SOP/SOP'/SOP'')
* @return if >0, number of VDOs to send back.
*/
int pd_svdm(int port, int cnt, uint32_t *payload, uint32_t **rpayload,
uint32_t head, enum tcpm_transmit_type *rtype);
/**
* Handle Custom VDMs for flashing.
*
* @param port USB-C port number
* @param cnt number of data objects in the payload.
* @param payload payload data.
* @return if >0, number of VDOs to send back.
*/
int pd_custom_flash_vdm(int port, int cnt, uint32_t *payload);
/**
* Enter alternate mode on DFP
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for which to enter mode
* @param svid USB standard or vendor id to exit or zero for DFP amode reset.
* @param opos object position of mode to exit.
* @return vdm for UFP to be sent to enter mode or zero if not.
*/
uint32_t pd_dfp_enter_mode(int port, enum tcpm_transmit_type type,
uint16_t svid, int opos);
/**
* Get DisplayPort pin mode for DFP to request from UFP's capabilities.
*
* @param port USB-C port number.
* @param status DisplayPort Status VDO.
* @return one-hot PIN config to request.
*/
int pd_dfp_dp_get_pin_mode(int port, uint32_t status);
/**
* Exit alternate mode on DFP
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for which to exit mode
* @param svid USB standard or vendor id to exit or zero for DFP amode reset.
* @param opos object position of mode to exit.
* @return 1 if UFP should be sent exit mode VDM.
*/
int pd_dfp_exit_mode(int port, enum tcpm_transmit_type type, uint16_t svid,
int opos);
/**
* Consume the SVDM attention data
*
* @param port USB-C port number
* @param payload payload data.
*/
void dfp_consume_attention(int port, uint32_t *payload);
/**
* Consume the discover identity message
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for received modes
* @param cnt number of data objects in payload
* @param payload payload data.
*/
void dfp_consume_identity(int port, enum tcpm_transmit_type type, int cnt,
uint32_t *payload);
/**
* Consume the SVIDs
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for received SVIDs
* @param cnt number of data objects in payload
* @param payload payload data.
*/
void dfp_consume_svids(int port, enum tcpm_transmit_type type, int cnt,
uint32_t *payload);
/**
* Consume the alternate modes
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for received modes
* @param cnt number of data objects in payload
* @param payload payload data.
*/
void dfp_consume_modes(int port, enum tcpm_transmit_type type, int cnt,
uint32_t *payload);
/**
* Initialize alternate mode discovery info for DFP
*
* @param port USB-C port number
*/
void pd_dfp_discovery_init(int port);
/**
* Set identity discovery state for this type and port
*
* @param port USB-C port number
* @param type SOP* type to set
* @param disc Discovery state to set (failed or complete)
*/
void pd_set_identity_discovery(int port, enum tcpm_transmit_type type,
enum pd_discovery_state disc);
/**
* Get identity discovery state for this type and port
*
* @param port USB-C port number
* @param type SOP* type to retrieve
* @return Current discovery state (failed or complete)
*/
enum pd_discovery_state pd_get_identity_discovery(int port,
enum tcpm_transmit_type type);
/**
* Set SVID discovery state for this type and port.
*
* @param port USB-C port number
* @param type SOP* type to set
* @param disc Discovery state to set (failed or complete)
*/
void pd_set_svids_discovery(int port, enum tcpm_transmit_type type,
enum pd_discovery_state disc);
/**
* Get SVID discovery state for this type and port
*
* @param port USB-C port number
* @param type SOP* type to retrieve
* @return Current discovery state (failed or complete)
*/
enum pd_discovery_state pd_get_svids_discovery(int port,
enum tcpm_transmit_type type);
/**
* Set Modes discovery state for this port, SOP* type, and SVID.
*
* @param port USB-C port number
* @param type SOP* type to set
* @param svid SVID to set mode discovery state for
* @param disc Discovery state to set (failed or complete)
*/
void pd_set_modes_discovery(int port, enum tcpm_transmit_type type,
uint16_t svid, enum pd_discovery_state disc);
/**
* Get Modes discovery state for this port and SOP* type. Modes discover is
* considered NEEDED if there are any discovered SVIDs that still need to be
* discovered. Modes discover is considered COMPLETE when no discovered SVIDs
* need to go through discovery and at least one mode has been considered
* complete or if there are no discovered SVIDs. Modes discovery is
* considered FAIL if mode discovery for all SVIDs are failed.
*
* @param port USB-C port number
* @param type SOP* type to retrieve
* @return Current discovery state (PD_DISC_NEEDED, PD_DISC_COMPLETE,
* PD_DISC_FAIL)
*/
enum pd_discovery_state pd_get_modes_discovery(int port,
enum tcpm_transmit_type type);
/**
* Returns the mode vdo count of the specified SVID and sets
* the vdo_out with it's discovered mode VDO.
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for VDM
* @param svid SVID to get
* @param vdo_out Discover Mode VDO response to set
* Note: It must be able to fit wihin PDO_MODES VDOs.
* @return Mode VDO cnt of specified SVID if is discovered,
* 0 otherwise
*/
int pd_get_mode_vdo_for_svid(int port, enum tcpm_transmit_type type,
uint16_t svid, uint32_t *vdo_out);
/**
* Get a pointer to mode data for the next SVID that needs to be discovered.
* This data may indicate that discovery failed.
*
* @param port USB-C port number
* @param type SOP* type to retrieve
* @return In order of precedence:
* Pointer to the first SVID-mode structure with needs discovered
* mode, if any exist;
* Pointer to the first SVID-mode structure with discovery failed
* mode, if any exist and no modes succeeded in discovery;
* NULL, otherwise
*/
struct svid_mode_data *pd_get_next_mode(int port, enum tcpm_transmit_type type);
/**
* Return a pointer to the discover identity response structure for this SOP*
* type
*
* @param port USB-C port number
* @param type SOP* type to retrieve
* @return pointer to response structure, which the caller may not alter
*/
const union disc_ident_ack *pd_get_identity_response(int port,
enum tcpm_transmit_type type);
/**
* Return the VID of the USB PD accessory connected to a specified port
*
* @param port USB-C port number
* @return the USB Vendor Identifier or 0 if it doesn't exist
*/
uint16_t pd_get_identity_vid(int port);
/**
* Return the PID of the USB PD accessory connected to a specified port
*
* @param port USB-C port number
* @return the USB Product Identifier or 0 if it doesn't exist
*/
uint16_t pd_get_identity_pid(int port);
/**
* Return the product type connected to a specified port
*
* @param port USB-C port number
* @return USB-C product type (hub,periph,cable,ama)
*/
uint8_t pd_get_product_type(int port);
/**
* Return the SVID count of port partner connected to a specified port
*
* @param port USB-C port number
* @param type SOP* type to retrieve
* @return SVID count
*/
int pd_get_svid_count(int port, enum tcpm_transmit_type type);
/**
* Return the SVID of given SVID index of port partner connected
* to a specified port
*
* @param port USB-C port number
* @param svid_idx SVID Index
* @param type SOP* type to retrieve
* @return SVID
*/
uint16_t pd_get_svid(int port, uint16_t svid_idx, enum tcpm_transmit_type type);
/**
* Return the pointer to modes of VDO of port partner connected
* to a specified port
*
* @param port USB-C port number
* @param svid_idx SVID Index
* @param type SOP* type to retrieve
* @return Pointer to modes of VDO
*/
uint32_t *pd_get_mode_vdo(int port, uint16_t svid_idx,
enum tcpm_transmit_type type);
/*
* Looks for a discovered mode VDO for the specified SVID.
*
* @param port USB-C port number
* @param type SOP* type to retrieve
* @param svid SVID to look up
* @return Whether a mode was discovered for the SVID
*/
bool pd_is_mode_discovered_for_svid(int port, enum tcpm_transmit_type type,
uint16_t svid);
/**
* Return the alternate mode entry and exit data
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP', SOP'') for mode data
* @param svid SVID
* @return pointer to SVDM mode data
*/
struct svdm_amode_data *pd_get_amode_data(int port,
enum tcpm_transmit_type type, uint16_t svid);
/*
* Returns cable revision
*
* @param port USB-C port number
* @return cable revision
*/
enum pd_rev_type get_usb_pd_cable_revision(int port);
/**
* Returns false if previous SOP' messageId count is different from received
* messageId count.
*
* @param port USB-C port number
* @param msg_id Received cable msg_id
* @return False if Received MessageId count is different from the
* previous one.
* True Otherwise
*/
bool consume_sop_prime_repeat_msg(int port, uint8_t msg_id);
/**
* Returns false if previous SOP'' messageId count is different from received
* messageId count.
*
* @param port USB-C port number
* @param msg_id Received cable msg_id
* @return False if Received MessageId count is different from the
* previous one.
* True Otherwise
*/
bool consume_sop_prime_prime_repeat_msg(int port, uint8_t msg_id);
/*
* Clears record of which tasks have accessed discovery data for this port and
* type.
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP')
*/
void pd_discovery_access_clear(int port, enum tcpm_transmit_type type);
/*
* Validate that this current task is the only one which has retrieved the
* pointer from pd_get_am_discovery() since last call to
* pd_discovery_access_clear().
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP')
* @return True - No other tasks have accessed the data
*/
bool pd_discovery_access_validate(int port, enum tcpm_transmit_type type);
/*
* Returns the pointer to PD alternate mode discovery results
*
* Note: Caller function can mutate the data in this structure.
*
* TCPMv2 will track all tasks which call this function after the most recent
* pd_discovery_access_clear(), so that the host command task reading out this
* structure may run pd_discovery_access_validate() at the end of its read to
* verify whether data might have changed in that timeframe.
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for discovered information
* @return pointer to PD alternate mode discovery results
*/
struct pd_discovery *pd_get_am_discovery(int port,
enum tcpm_transmit_type type);
/*
* Returns the pointer to PD active alternate modes.
* Note: Caller function can mutate the data in this structure.
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP', SOP'') for active modes
* @return Pointer to PD active alternate modes.
*/
struct partner_active_modes *pd_get_partner_active_modes(int port,
enum tcpm_transmit_type type);
/*
* Returns True if cable supports USB2 connection
*
* @param port USB-C port number
* @return True is usb2_supported, false otherwise
*/
bool is_usb2_cable_support(int port);
/*
* Checks if Cable speed is Gen2 or better
*
* @param port USB-C port number
* @return True if Cable supports speed USB_R20_SS_U31_GEN1_GEN2/
* USB_R30_SS_U32_U40_GEN2/
* USB_R30_SS_U40_GEN3,
* False otherwise
*/
bool is_cable_speed_gen2_capable(int port);
/*
* Checks if Active Cable has retimer as an active element
*
* @param port USB-C port number
* @return True if Active element is Retimer
* False otherwise
*/
bool is_active_cable_element_retimer(int port);
/**
* Set DFP enter mode flags if available
*
* @param port USB-C port number
* @param set If true set the flag else clear
*/
void pd_set_dfp_enter_mode_flag(int port, bool set);
/**
* Reset Cable type, Cable attributes and cable flags
*
* @param port USB-C port number
*/
void reset_pd_cable(int port);
/**
* Return the type of cable attached
*
* @param port USB-C port number
* @return cable type
*/
enum idh_ptype get_usb_pd_cable_type(int port);
/**
* Returns USB4 cable speed according to the port, if port supports lesser
* USB4 cable speed than the cable.
*
* For USB4 cable speed = USB3.2 Gen 2:
* |
* Is DFP gen 3 capable?
* |
* Yes ----|----- No ----
* | |
* Cable supports Thunderbolt 3 |
* Gen 3 cable speed? |
* | |
* ---- yes ---|-----No --------------|
* | |
* USB4 cable speed = USB4 gen 3 USB4 cable speed = USB3.2/USB4 Gen 2
*
* Ref: USB Type-C Cable and Connector Specification, figure 5-1 USB4 Discovery
* and Entry Flow Mode.
*
* @param port USB-C port number
* @return USB4 cable speed
*/
enum usb_rev30_ss get_usb4_cable_speed(int port);
/**
* Return enter USB message payload
*
* @param port USB-C port number
*/
uint32_t get_enter_usb_msg_payload(int port);
/**
* Enter USB4 mode
*
* @param port USB-C port number
*/
void enter_usb4_mode(int port);
/**
* Clear enter USB4 mode
*
* @param port USB-C port number
*/
void disable_enter_usb4_mode(int port);
/**
* Return if need to enter into USB4 mode
*
* @param port USB-C port number
*/
bool should_enter_usb4_mode(int port);
/**
* Return Thunderbolt rounded support
* Rounded support indicates if the cable can support rounding the
* frequency depending upon the cable generation.
*
* @param port USB-C port number
* @return tbt_rounded_support
*/
enum tbt_compat_rounded_support get_tbt_rounded_support(int port);
/**
* Returns the first discovered Mode VDO for Intel SVID
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP') for VDM
* @return Discover Mode VDO for Intel SVID if the Intel mode VDO is
* discovered, 0 otherwise
*/
uint32_t pd_get_tbt_mode_vdo(int port, enum tcpm_transmit_type type);
/**
* Sets the Mux state to Thunderbolt-Compatible mode
*
* @param port USB-C port number
*/
void set_tbt_compat_mode_ready(int port);
/**
* Checks if the attached cable supports superspeed
*
* @param port USB-C port number
* @return True if cable is superspeed, false otherwise
*/
bool is_tbt_cable_superspeed(int port);
/**
* Returns Thunderbolt-compatible cable speed according to the port if,
* port supports lesser speed than the cable
*
* @param port USB-C port number
* @return Thunderbolt cable speed
*/
enum tbt_compat_cable_speed get_tbt_cable_speed(int port);
/**
* Fills the TBT3 objects in the payload and returns the number
* of objects it has filled.
*
* @param port USB-C port number
* @param sop Type of SOP message transmitted (SOP/SOP'/SOP'')
* @param payload payload data
* @return Number of object filled
*/
int enter_tbt_compat_mode(int port, enum tcpm_transmit_type sop,
uint32_t *payload);
/**
* Return maximum allowed speed for Thunderbolt-compatible mode
*
* NOTE: Chromebooks require that all USB-C ports support the same features,
* so the maximum speed returned by this function should be set to the lowest
* speed supported by all ports. Products in development (i.e. proto boards)
* can support different speeds on each port for validation purpose.
*
* Ref: TGL PDG
* 3.1: Fiberweave Impact for HSIOs Operating at ≥8 GT/s Speeds
* MAX TBT routing length is 205mm prior to connection to re-timer
*
* Thunderbolt-compatible mode has electrical and PCB requirements for signal
* routing and length. Default speed is set for connected cable's speed.
* Board level function can override the cable speed based on the design.
*
* @param port USB-C port number
* @return cable speed
*/
__override_proto enum tbt_compat_cable_speed board_get_max_tbt_speed(int port);
/**
* Return true if the board's port supports TBT or USB4
*
* NOTE: This is only applicable for products in development (i.e. proto boards)
* For customer products, all USB-C ports need to support the same features.
*
* Ref: TGL PDG
* 5.2 USB-C* Sub-System:
* Motherboard should have re-timer for all USB-C connectors that supports TBT.
* Aux/LSx platform level muxing is required.
*
* When TBT or USB4 mode is enabled, by default all the ports are assumed to be
* supporting TBT or USB4. However, not all the ports may support TBT & USB4
* due to dependency on retimer and platform level Aux/LSx muxing. This board
* level function can override the TBT & USB4 logic based on board design.
*
* @param port USB-C port number
* @return True if TBT or USB4 is supported on the specified port, else false.
*/
__override_proto bool board_is_tbt_usb4_port(int port);
/**
* Store Device ID & RW hash of device
*
* @param port USB-C port number
* @param dev_id device identifier
* @param rw_hash pointer to rw_hash
* @param current_image current image: RW or RO
* @return true if the dev / hash match an existing hash
* in our table, false otherwise
*/
int pd_dev_store_rw_hash(int port, uint16_t dev_id, uint32_t *rw_hash,
uint32_t ec_image);
/**
* Get Device ID & RW hash of device
*
* @param port USB-C port number
* @param dev_id pointer to device identifier
* @param rw_hash pointer to rw_hash
* @param current_image pointer to current image: RW or RO
*/
void pd_dev_get_rw_hash(int port, uint16_t *dev_id, uint8_t *rw_hash,
uint32_t *current_image);
/**
* Fast Role Swap was detected
*
* @param port USB-C port number
*/
void pd_got_frs_signal(int port);
/**
* Try to fetch one PD log entry from accessory
*
* @param port USB-C accessory port number
* @return EC_RES_SUCCESS if the VDM was sent properly else error code
*/
int pd_fetch_acc_log_entry(int port);
/**
* Analyze the log entry received as the VDO_CMD_GET_LOG payload.
*
* @param port USB-C accessory port number
* @param cnt number of data objects in payload
* @param payload payload data
*/
void pd_log_recv_vdm(int port, int cnt, uint32_t *payload);
/**
* Send Vendor Defined Message
*
* @param port USB-C port number
* @param vid Vendor ID
* @param cmd VDO command number
* @param data Pointer to payload to send
* @param count number of data objects in payload
*/
void pd_send_vdm(int port, uint32_t vid, int cmd, const uint32_t *data,
int count);
/**
* Instruct the Policy Engine to perform a Device Policy Manager Request
* This function is called from the Device Policy Manager and only has effect
* if the current Policy Engine state is Src.Ready or Snk.Ready.
*
* @param port USB-C port number
* @param req Device Policy Manager Request
*/
void pd_dpm_request(int port, enum pd_dpm_request req);
/*
* TODO(b/155890173): Probably, this should only be used by the DPM, and
* pd_send_vdm should be implemented in terms of DPM functions.
*/
/* Prepares the PE to send an VDM.
*
* @param port USB-C port number
* @param type Transmit type (SOP, SOP', SOP'') for VDM
* @param vdm Buffer containing the message body to send, including the VDM
* Header but not the Message Header.
* @param vdo_cnt The number of 32-bit VDOs in vdm, including the VDM Header;
* must be 1 - 7 inclusive.
* @return True if the setup was successful
*/
bool pd_setup_vdm_request(int port, enum tcpm_transmit_type tx_type,
uint32_t *vdm, uint32_t vdo_cnt);
/* Power Data Objects for the source and the sink */
__override_proto extern const uint32_t pd_src_pdo[];
extern const int pd_src_pdo_cnt;
extern const uint32_t pd_src_pdo_max[];
extern const int pd_src_pdo_max_cnt;
extern const uint32_t pd_snk_pdo[];
extern const int pd_snk_pdo_cnt;
/**
* Request that a host event be sent to notify the AP of a PD power event.
*
* Note: per-port events should be retrieved through pd_get_events(), but this
* function still notifies the AP there are events to retrieve, and directs it
* to the per-port events through PD_EVENT_TYPEC
*
* @param mask host event mask.
*/
#if defined(HAS_TASK_HOSTCMD) && !defined(TEST_BUILD)
void pd_send_host_event(int mask);
#else
static inline void pd_send_host_event(int mask) { }
#endif
/**
* Determine if in alternate mode or not.
*
* @param port port number.
* @param type Transmit type (SOP, SOP', SOP'') for alt mode status
* @param svid USB standard or vendor id
* @return object position of mode chosen in alternate mode otherwise zero.
*/
int pd_alt_mode(int port, enum tcpm_transmit_type type, uint16_t svid);
/**
* Send hpd over USB PD.
*
* @param port port number.
* @param hpd hotplug detect type.
*/
void pd_send_hpd(int port, enum hpd_event hpd);
/**
* Enable USB Billboard Device.
*/
extern const struct deferred_data pd_usb_billboard_deferred_data;
/* --- Physical layer functions : chip specific --- */
/* Packet preparation/retrieval */
/**
* Prepare packet reading state machine.
*
* @param port USB-C port number
*/
void pd_init_dequeue(int port);
/**
* Prepare packet reading state machine.
*
* @param port USB-C port number
* @param off current position in the packet buffer.
* @param len minimum size to read in bits.
* @param val the read bits.
* @return new position in the packet buffer.
*/
int pd_dequeue_bits(int port, int off, int len, uint32_t *val);
/**
* Advance until the end of the preamble.
*
* @param port USB-C port number
* @return new position in the packet buffer.
*/
int pd_find_preamble(int port);
/**
* Write the preamble in the TX buffer.
*
* @param port USB-C port number
* @return new position in the packet buffer.
*/
int pd_write_preamble(int port);
/**
* Write one 10-period symbol in the TX packet.
* corresponding to a quartet with 4b5b encoding
* and Biphase Mark Coding.
*
* @param port USB-C port number
* @param bit_off current position in the packet buffer.
* @param val10 the 10-bit integer.
* @return new position in the packet buffer.
*/
int pd_write_sym(int port, int bit_off, uint32_t val10);
/**
* Ensure that we have an edge after EOP and we end up at level 0,
* also fill the last byte.
*
* @param port USB-C port number
* @param bit_off current position in the packet buffer.
* @return new position in the packet buffer.
*/
int pd_write_last_edge(int port, int bit_off);
/**
* Do 4B5B encoding on a 32-bit word.
*
* @param port USB-C port number
* @param off current offset in bits inside the message
* @param val32 32-bit word value to encode
* @return new offset in the message in bits.
*/
int encode_word(int port, int off, uint32_t val32);
/**
* Ensure that we have an edge after EOP and we end up at level 0,
* also fill the last byte.
*
* @param port USB-C port number
* @param header PD packet header
* @param cnt number of payload words
* @param data payload content
* @return length of the message in bits.
*/
int prepare_message(int port, uint16_t header, uint8_t cnt,
const uint32_t *data);
/**
* Dump the current PD packet on the console for debug.
*
* @param port USB-C port number
* @param msg context string.
*/
void pd_dump_packet(int port, const char *msg);
/**
* Change the TX data clock frequency.
*
* @param port USB-C port number
* @param freq frequency in hertz.
*/
void pd_set_clock(int port, int freq);
/* TX/RX callbacks */
/**
* Start sending over the wire the prepared packet.
*
* @param port USB-C port number
* @param polarity plug polarity (0=CC1, 1=CC2).
* @param bit_len size of the packet in bits.
* @return length transmitted or negative if error
*/
int pd_start_tx(int port, int polarity, int bit_len);
/**
* Set PD TX DMA to use circular mode. Call this before pd_start_tx() to
* continually loop over the transmit buffer given in pd_start_tx().
*
* @param port USB-C port number
*/
void pd_tx_set_circular_mode(int port);
/**
* Stop PD TX DMA circular mode transaction already in progress.
*
* @param port USB-C port number
*/
void pd_tx_clear_circular_mode(int port);
/**
* Call when we are done sending a packet.
*
* @param port USB-C port number
* @param polarity plug polarity (0=CC1, 1=CC2).
*/
void pd_tx_done(int port, int polarity);
/**
* Check whether the PD reception is started.
*
* @param port USB-C port number
* @return true if the reception is on-going.
*/
int pd_rx_started(int port);
/**
* Suspend the PD task.
* @param port USB-C port number
* @param suspend pass 0 to resume, anything else to suspend
*/
void pd_set_suspend(int port, int suspend);
/**
* Resume the PD task for a port after a period of time has elapsed.
* @param port USB-C port number
*/
void pd_deferred_resume(int port);
/**
* Check if the port has been initialized and PD task has not been
* suspended.
*
* @param port USB-C port number
* @return true if the PD task is not suspended.
*/
int pd_is_port_enabled(int port);
/* Callback when the hardware has detected an incoming packet */
void pd_rx_event(int port);
/* Start sampling the CC line for reception */
void pd_rx_start(int port);
/* Call when we are done reading a packet */
void pd_rx_complete(int port);
/* restart listening to the CC wire */
void pd_rx_enable_monitoring(int port);
/* stop listening to the CC wire during transmissions */
void pd_rx_disable_monitoring(int port);
/* get time since last RX edge interrupt */
uint64_t get_time_since_last_edge(int port);
/**
* Deinitialize the hardware used for PD.
*
* @param port USB-C port number
*/
void pd_hw_release(int port);
/**
* Initialize the hardware used for PD RX/TX.
*
* @param port USB-C port number
* @param role Role to initialize pins in
*/
void pd_hw_init(int port, enum pd_power_role role);
/**
* Initialize the reception side of hardware used for PD.
*
* This is a subset of pd_hw_init() including only :
* the comparators + the RX edge delay timer + the RX DMA.
*
* @param port USB-C port number
*/
void pd_hw_init_rx(int port);
/* --- Protocol layer functions --- */
/**
* Decode a raw packet in the RX buffer.
*
* @param port USB-C port number
* @param payload buffer to store the packet payload (must be 7x 32-bit)
* @return the packet header or <0 in case of error
*/
int pd_analyze_rx(int port, uint32_t *payload);
/**
* Check if PD communication is enabled
*
* @return true if it's enabled or false otherwise
*/
int pd_comm_is_enabled(int port);
/**
* Check if PD is capable of alternate mode
*
* @return true if PD is capable of alternate mode else false
*/
bool pd_alt_mode_capable(int port);
/**
* Get connected state
*
* @param port USB-C port number
* @return True if port is in connected state
*/
int pd_is_connected(int port);
/**
* Execute a hard reset
*
* @param port USB-C port number
*/
void pd_execute_hard_reset(int port);
/**
* Signal to protocol layer that PD transmit is complete
*
* @param port USB-C port number
* @param status status of the transmission
*/
void pd_transmit_complete(int port, int status);
/**
* Get port polarity.
*
* @param port USB-C port number
*/
enum tcpc_cc_polarity pd_get_polarity(int port);
/**
* Get the port events.
*
* @param port USB-C port number
* @return PD_STATUS_EVENT_* bitmask
*/
uint32_t pd_get_events(int port);
/**
* Clear selected port events
*
* @param port USB-C port number
* @param clear_mask bitmask of events to clear (PD_STATUS_EVENT_* bitmask)
*/
void pd_clear_events(int port, uint32_t clear_mask);
/*
* Requests that the port enter the specified mode. A successful result just
* means that the request was received, not that the mode has been entered yet.
*
* @param port USB-C port number
* @param mode The mode to enter
* @return EC_RES_SUCCESS if the request was made
* EC_RES_INVALID_PARAM for an invalid port or mode;
* EC_RES_BUSY if another mode entry request is already in progress
*/
enum ec_status pd_request_enter_mode(int port, enum typec_mode mode);
/**
* Get port partner data swap capable status
*
* @param port USB-C port number
* @return True if data swap capable else false
*/
bool pd_get_partner_data_swap_capable(int port);
/**
* Handle an overcurrent protection event. The port acting as a source has
* reported an overcurrent event.
*
* @param port: USB-C port number.
*/
void pd_handle_overcurrent(int port);
/**
* Handle a CC overvoltage protection event.
*
* @param port: USB-C port number.
*/
void pd_handle_cc_overvoltage(int port);
/**
* Request power swap command to be issued
*
* @param port USB-C port number
*/
void pd_request_power_swap(int port);
/**
* Try to become the VCONN source, if we are not already the source and the
* other side is willing to accept a VCONN swap.
*
* @param port USB-C port number
*/
void pd_try_vconn_src(int port);
/**
* Request data swap command to be issued
*
* @param port USB-C port number
*/
void pd_request_data_swap(int port);
/**
* Set the PD communication enabled flag. When communication is disabled,
* the port can still detect connection and source power but will not
* send or respond to any PD communication.
*
* @param port USB-C port number
* @param enable Enable flag to set
*/
void pd_comm_enable(int port, int enable);
/**
* Set the PD pings enabled flag. When source has negotiated power over
* PD successfully, it can optionally send pings periodically based on
* this enable flag.
*
* @param port USB-C port number
* @param enable Enable flag to set
*/
void pd_ping_enable(int port, int enable);
/* Issue PD soft reset */
void pd_soft_reset(void);
/* Prepare PD communication for reset */
void pd_prepare_reset(void);
/**
* Signal power request to indicate a charger update that affects the port.
*
* @param port USB-C port number
*/
void pd_set_new_power_request(int port);
/**
* Return true if partner port is known to be PD capable.
*
* @param port USB-C port number
* @return true if PD capable else false
*/
bool pd_capable(int port);
/**
* Returns the source caps list
*
* @param port USB-C port number
*/
const uint32_t * const pd_get_src_caps(int port);
/**
* Returns the number of source caps
*
* @param port USB-C port number
*/
uint8_t pd_get_src_cap_cnt(int port);
/**
* Set the source caps list & count
*
* @param port USB-C port number
* @param cnt Source caps count
* @param src_caps Pointer to source caps
*
*/
void pd_set_src_caps(int port, int cnt, uint32_t *src_caps);
/**
* Returns the sink caps list
*
* @param port USB-C port number
*/
const uint32_t * const pd_get_snk_caps(int port);
/**
* Returns the number of sink caps
*
* @param port USB-C port number
*/
uint8_t pd_get_snk_cap_cnt(int port);
/**
* Return true if partner port is capable of communication over USB data
* lines.
*
* @param port USB-C port number
*/
bool pd_get_partner_usb_comm_capable(int port);
/**
* Return true if PD is in disconnect state
*
* @param port USB-C port number
*/
bool pd_is_disconnected(int port);
/**
* Return true if vbus is at level on the specified port.
*
* Note that boards may override this function if they have a method outside the
* TCPCI driver to verify vSafe0V
*
* @param port USB-C port number
* @param level vbus_level to check against
*/
__override_proto bool pd_check_vbus_level(int port, enum vbus_level level);
/**
* Return true if vbus is at Safe5V on the specified port.
*
* @param port USB-C port number
*/
int pd_is_vbus_present(int port);
/**
* Enable or disable the FRS trigger for a given port
*
* @param port USB-C port number
* @param enable 1 to enable the FRS trigger, 0 to disable
* @return EC_SUCCESS on success, or an error
*/
int pd_set_frs_enable(int port, int enable);
/**
* Optional, board-specific configuration to enable the FRS trigger on port
*
* @param port USB-C port number
* @param enable 1 to enable the FRS trigger, 0 to disable
* @return EC_SUCCESS on success, or an error
*/
__override_proto int board_pd_set_frs_enable(int port, int enable);
/**
* Optional board-level function called after TCPC detect FRS signal.
*
* @param port USB-C port number
*/
__overridable void board_frs_handler(int port);
/**
* Get current DisplayPort pin mode on the specified port.
*
* @param port USB-C port number
* @return MODE_DP_PIN_[A-E] if used else 0
*/
__override_proto uint8_t get_dp_pin_mode(int port);
/**
* Get board specific usb pd port count
*
* @return <= CONFIG_USB_PD_PORT_MAX_COUNT if configured in board file,
* else return CONFIG_USB_PD_PORT_MAX_COUNT
*/
__override_proto uint8_t board_get_usb_pd_port_count(void);
/**
* Resets external PD chips including TCPCs and MCUs.
*
* Boards must provide this when PDCMD (PD MCUs case) or PD INT (TCPC case)
* tasks are present.
*/
void board_reset_pd_mcu(void);
/**
* Return true if specified PD port is debug accessory.
*
* @param port USB-C port number
*/
bool pd_is_debug_acc(int port);
/**
* Sets the polarity of the port
*
* @param port USB-C port number
* @param polarity 0 for CC1, else 1 for CC2
*/
void pd_set_polarity(int port, enum tcpc_cc_polarity polarity);
/*
* Notify the AP that we have entered into DisplayPort Alternate Mode. This
* sets a DP_ALT_MODE_ENTERED MKBP event which may wake the AP.
*/
__override_proto void pd_notify_dp_alt_mode_entry(int port);
/*
* Determines the PD state of the port partner according to Table 4-10 in USB PD
* specification.
*/
enum pd_cc_states pd_get_cc_state(
enum tcpc_cc_voltage_status cc1, enum tcpc_cc_voltage_status cc2);
/*
* Optional, get the board-specific SRC DTS polarity.
*
* This function is used for SRC DTS mode. The polarity is predetermined as a
* board-specific setting, i.e. what Rp impedance the CC lines are pulled.
*
* @param port USB-C port number
* @return port polarity (0=CC1, 1=CC2)
*/
__override_proto uint8_t board_get_src_dts_polarity(int port);
/* ----- Logging ----- */
#ifdef CONFIG_USB_PD_LOGGING
/**
* Record one event in the PD logging FIFO.
*
* @param type event type as defined by PD_EVENT_xx in ec_commands.h
* @param size_port payload size and port num (defined by PD_LOG_PORT_SIZE)
* @param data type-defined information
* @param payload pointer to the optional payload (0..16 bytes)
*/
void pd_log_event(uint8_t type, uint8_t size_port,
uint16_t data, void *payload);
/**
* Retrieve one logged event and prepare a VDM with it.
*
* Used to answer the VDO_CMD_GET_LOG unstructured VDM.
*
* @param payload pointer to the payload data buffer (must be 7 words)
* @return number of 32-bit words in the VDM payload.
*/
int pd_vdm_get_log_entry(uint32_t *payload);
#else /* CONFIG_USB_PD_LOGGING */
static inline void pd_log_event(uint8_t type, uint8_t size_port,
uint16_t data, void *payload) {}
static inline int pd_vdm_get_log_entry(uint32_t *payload) { return 0; }
#endif /* CONFIG_USB_PD_LOGGING */
/**
* Prepare for a sysjump by exiting any alternate modes, if PD communication is
* allowed.
*
* Note: this call will block until the PD task has finished its exit mode and
* re-awoken the calling task.
*/
void pd_prepare_sysjump(void);
/* ----- SVDM handlers ----- */
/* DisplayPort Alternate Mode */
#ifdef CONFIG_USB_PD_ALT_MODE_DFP
extern int dp_flags[CONFIG_USB_PD_PORT_MAX_COUNT];
extern uint32_t dp_status[CONFIG_USB_PD_PORT_MAX_COUNT];
#endif /* CONFIG_USB_PD_ALT_MODE_DFP */
/*
* Set HPD GPIO level
*
* @param port The PD port number
* @param en 0 for HPD disabled, 1 for HPD enabled.
*/
void svdm_set_hpd_gpio(int port, int en);
/*
* Get HPD GPIO level
*
* @param port The PD port number
* @return 0 for HPD disabled, 1 for HPD enabled.
*/
int svdm_get_hpd_gpio(int port);
/**
* Configure the pins used for DisplayPort Alternate Mode into safe state.
*
* @param port The PD port number
*/
__override_proto void svdm_safe_dp_mode(int port);
/**
* Enter DisplayPort Alternate Mode.
*
* The default implementation will only enter DP Alt Mode if the SoC is on.
* Also, it may notify the AP that the mode was entered.
*
* @param port The PD port number
* @param mode_caps Bitmask indicating DisplayPort mode capabilities
* @return 0 if mode is entered, -1 otherwise.
*/
__override_proto int svdm_enter_dp_mode(int port, uint32_t mode_caps);
/**
* Construct a DP status response.
*
* @param port The PD port number
* @param payload Pointer to the PDO payload which is filled with the DPStatus
* information.
* @return number of VDOs
*/
__override_proto int svdm_dp_status(int port, uint32_t *payload);
/**
* Configure the pins used for DisplayPort Alternate Mode.
*
* @param port The PD port number
* @payload payload Pointer to the PDO payload which is filled with the
* DPConfigure response message
* @return number of VDOs
*/
__override_proto int svdm_dp_config(int port, uint32_t *payload);
/**
* Perform any other work required after configuring the pins for DP Alt Mode.
*
* Typically, this involves sending the HPD signal from either the EC or TCPC to
* the GPU.
* @param port The PD port number
*/
__override_proto void svdm_dp_post_config(int port);
/**
* Called when a DisplayPort Attention command is received
*
* The default implementation will parse the Attention message and indicate the
* HPD level to the GPU.
*
* @param port The PD port number
* @param payload Pointer to the payload received from the attention command
* @return 0 for NAK, 1 for ACK
*/
__override_proto int svdm_dp_attention(int port, uint32_t *payload);
/**
* Exit DisplayPort Alternate Mode.
*
* @param port The PD port number
*/
__override_proto void svdm_exit_dp_mode(int port);
/* Google Firmware Update Alternate Mode */
/**
* Enter Google Firmware Update (GFU) Mode.
*
* @param port The PD port number
* @param mode_caps Unused for GFU
* @return 0 to enter the mode, -1 otherwise
*/
__override_proto int svdm_enter_gfu_mode(int port, uint32_t mode_caps);
/**
* Exit Google Firmware Update Mode.
*
* @param port The PD port number
*/
__override_proto void svdm_exit_gfu_mode(int port);
/**
* Called after successful entry into GFU Mode
*
* The default implementation sends VDO_CMD_READ_INFO.
* @param port The PD port number
* @param payload Unused for GFU
* @return The number of VDOs
*/
__override_proto int svdm_gfu_status(int port, uint32_t *payload);
/**
* Configure any pins needed for GFU Mode
*
* @param port The PD port number
* @param payload Unused for GFU
* @return The number of VDOs
*/
__override_proto int svdm_gfu_config(int port, uint32_t *payload);
/**
* Called when an Attention Message is received
*
* @param port The PD port number
* @param payload Unusued for GFU
* @return The number of VDOs
*/
__override_proto int svdm_gfu_attention(int port, uint32_t *payload);
/* Thunderbolt-compatible Alternate Mode */
/**
* Enter Thunderbolt-compatible Mode.
*
* @param port The PD port number
* @param mode_caps Unused
* @return 0 on success else -1
*/
__override_proto int svdm_tbt_compat_enter_mode(int port, uint32_t mode_caps);
/**
* Exit Thunderbolt-compatible Mode.
*
* @param port The PD port number
*/
__override_proto void svdm_tbt_compat_exit_mode(int port);
/**
* Called to get Thunderbolt-compatible mode status
*
* @param port The PD port number
* @param payload Unused
* @return 0 on success else -1
*/
__override_proto int svdm_tbt_compat_status(int port, uint32_t *payload);
/**
* Called to configure Thunderbolt-compatible mode
*
* @param port The PD port number
* @param payload Unused
* @return 0 on success else -1
*/
__override_proto int svdm_tbt_compat_config(int port, uint32_t *payload);
/**
* Called when Thunderbolt-compatible Attention Message is received
*
* @param port The PD port number
* @param payload Unusued
* @return 0 on success else -1
*/
__override_proto int svdm_tbt_compat_attention(int port, uint32_t *payload);
/* Miscellaneous */
/**
* Called for responding to the EC_CMD_GET_PD_PORT_CAPS host command
*
* @param port The PD port number
* @return Location of the port
*/
__override_proto enum ec_pd_port_location board_get_pd_port_location(int port);
/**
* Can be called whenever VBUS presence changes. The default implementation
* does nothing, but a board may override it.
*/
__override_proto void board_vbus_present_change(void);
/****************************************************************************
* TCPC CC/Rp Management
*/
/**
* Called to cache Source Current Limit
* A call to typec_update_cc will actually update the hardware to reflect the
* cache.
*
* @param port The PD port number
* @param rp Rp is the Current Limit to advertise
*/
void typec_select_src_current_limit_rp(int port, enum tcpc_rp_value rp);
/**
* Called to cache Source Collision Rp
* A call to typec_update_cc will actually update the hardware to reflect the
* cache.
*
* @param port The PD port number
* @param rp Rp is the Collision Avoidance Rp value
*/
void typec_select_src_collision_rp(int port, enum tcpc_rp_value rp);
/**
* Called to update cached CC/Rp values to hardware
*
* @param port The PD port number
* @return 0 on success else failure
*/
int typec_update_cc(int port);
/****************************************************************************/
#endif /* __CROS_EC_USB_PD_H */