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glider/fw/usb_pd.h

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fw: initial controller fw
2022-09-04 19:16:18 +00:00
/* Copyright (c) 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 __USB_PD_H
#define __USB_PD_H
#include "tcpm_driver.h"
#include "usb_pd_driver.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Time units in microseconds */
#define MSEC_US (1000ul)
#define SECOND_US (1000000ul)
#define MINUTE_US (60000000ul)
#define HOUR_US (3600000000ull) /* Too big to fit in a signed int */
/* PD Host command timeout */
#define PD_HOST_COMMAND_TIMEOUT_US SECOND_US
#ifdef CONFIG_USB_PD_PORT_COUNT
/*
* 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.
*/
#ifdef HAS_TASK_PD_C0
#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 /* dummy task ID */
#define TASK_ID_TO_PD_PORT(id) 0
#endif /* CONFIG_COMMON_RUNTIME */
#endif /* CONFIG_USB_PD_PORT_COUNT */
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 */
#define PD_EVENT_RX (1<<2) /* Incoming packet event */
#define PD_EVENT_TX (1<<3) /* Outgoing packet event */
#define PD_EVENT_CC (1<<4) /* CC line change event */
#define PD_EVENT_TCPC_RESET (1<<5) /* TCPC has reset */
#define PD_EVENT_UPDATE_DUAL_ROLE (1<<6) /* DRP state has changed */
/* --- 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.
*/
#define PDO_TYPE_FIXED (0 << 30)
#define PDO_TYPE_BATTERY (1 << 30)
#define PDO_TYPE_VARIABLE (2 << 30)
#define PDO_TYPE_AUGMENTED (3 << 30)
#define PDO_TYPE_MASK (3 << 30)
#define PDO_FIXED_DUAL_ROLE (1L << 29) /* Dual role device */
#define PDO_FIXED_SUSPEND (1L << 28) /* USB Suspend supported */
#define PDO_FIXED_EXTERNAL (1L << 27) /* Externally powered */
#define PDO_FIXED_COMM_CAP (1L << 26) /* USB Communications Capable */
#define PDO_FIXED_DATA_SWAP (1L << 25) /* Data role swap command supported */
#define PDO_FIXED_PEAK_CURR () /* [21..20] Peak current */
#define PDO_FIXED_VOLT(mv) (((mv)/50L) << 10) /* Voltage in 50mV units */
#define PDO_FIXED_CURR(ma) (((ma)/10L) << 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) / 50L) & 0x3FF) << 20)
#define PDO_VAR_MIN_VOLT(mv) ((((mv) / 50L) & 0x3FF) << 10)
#define PDO_VAR_OP_CURR(ma) ((((ma) / 10L) & 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) / 50L) & 0x3FF) << 20)
#define PDO_BATT_MIN_VOLT(mv) ((((mv) / 50L) & 0x3FF) << 10)
#define PDO_BATT_OP_POWER(mw) ((((mw) / 250L) & 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 (1 << 27)
#define RDO_CAP_MISMATCH (1 << 26)
#define RDO_COMM_CAP (1 << 25)
#define RDO_NO_SUSPEND (1 << 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 (1 << 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 SVID_DISCOVERY_MAX 16
/* Timers */
#define PD_T_SINK_TX (18*MSEC_US) /* between 16ms and 20 */
#define PD_T_CHUNK_SENDER_RSP (24*MSEC_US) /* between 24ms and 30ms */
#define PD_T_CHUNK_SENDER_REQ (24*MSEC_US) /* between 24ms and 30ms */
#define PD_T_SEND_SOURCE_CAP (100*MSEC_US) /* between 100ms and 200ms */
#define PD_T_SINK_WAIT_CAP (600*MSEC_US) /* between 310ms and 620ms */
#define PD_T_SINK_TRANSITION (35*MSEC_US) /* between 20ms and 35ms */
#define PD_T_SOURCE_ACTIVITY (45*MSEC_US) /* between 40ms and 50ms */
//#define PD_T_SENDER_RESPONSE (30*MSEC_US) /* between 24ms and 30ms */
#define PD_T_SENDER_RESPONSE (100*MSEC_US) /* between 24ms and 30ms */
#define PD_T_PS_TRANSITION (500*MSEC_US) /* between 450ms and 550ms */
#define PD_T_PS_SOURCE_ON (480*MSEC_US) /* between 390ms and 480ms */
#define PD_T_PS_SOURCE_OFF (920*MSEC_US) /* between 750ms and 920ms */
#define PD_T_PS_HARD_RESET (25*MSEC_US) /* between 25ms and 35ms */
#define PD_T_ERROR_RECOVERY (25*MSEC_US) /* 25ms */
#define PD_T_CC_DEBOUNCE (100*MSEC_US) /* 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_US) /* toggle time for sink DRP */
#define PD_T_DRP_SRC (30*MSEC_US) /* toggle time for source DRP */
#define PD_T_DEBOUNCE (15*MSEC_US) /* between 10ms and 20ms */
#define PD_T_SINK_ADJ (55*MSEC_US) /* between PD_T_DEBOUNCE and 60ms */
#define PD_T_SRC_RECOVER (760*MSEC_US) /* between 660ms and 1000ms */
#define PD_T_SRC_RECOVER_MAX (1000*MSEC_US) /* 1000ms */
#define PD_T_SRC_TURN_ON (275*MSEC_US) /* 275ms */
#define PD_T_SAFE_0V (650*MSEC_US) /* 650ms */
#define PD_T_NO_RESPONSE (5500*MSEC_US) /* between 4.5s and 5.5s */
#define PD_T_BIST_TRANSMIT (50*MSEC_US) /* 50ms (used for task_wait arg) */
#define PD_T_BIST_RECEIVE (60*MSEC_US) /* 60ms (max time to process bist) */
#define PD_T_VCONN_SOURCE_ON (100*MSEC_US) /* 100ms */
#define PD_T_TRY_SRC (125*MSEC_US) /* Max time for Try.SRC state */
#define PD_T_TRY_WAIT (600*MSEC_US) /* Max time for TryWait.SNK state */
#define PD_T_SINK_REQUEST (100*MSEC_US) /* Wait 100ms before next request */
/* 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_US) /* timeout from UFP attach to Alt Mode Entry */
/* VDM Timers ( USB PD Spec Rev2.0 Table 6-30 )*/
#define PD_T_VDM_BUSY (100*MSEC_US) /* at least 100ms */
#define PD_T_VDM_E_MODE (25*MSEC_US) /* enter/exit the same max */
#define PD_T_VDM_RCVR_RSP (15*MSEC_US) /* max of 15ms */
#define PD_T_VDM_SNDR_RSP (30*MSEC_US) /* max of 30ms */
#define PD_T_VDM_WAIT_MODE_E (100*MSEC_US) /* enter/exit the same max */
/* 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 {
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;
};
struct svdm_svid_data {
uint16_t svid;
int mode_cnt;
uint32_t mode_vdo[PDO_MODES];
};
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;
/* 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 svdm_svid_data *data;
};
enum hpd_event {
hpd_none,
hpd_low,
hpd_high,
hpd_irq,
};
/* DisplayPort flags */
#define DP_FLAGS_DP_ON (1 << 0) /* Display port mode is on */
#define DP_FLAGS_HPD_HI_PENDING (1 << 1) /* Pending HPD_HI */
/* supported alternate modes */
enum pd_alternate_modes {
PD_AMODE_GOOGLE,
PD_AMODE_DISPLAYPORT,
/* not a real mode */
PD_AMODE_COUNT,
};
/* Policy structure for driving alternate mode */
struct pd_policy {
/* index of svid currently being operated on */
int svid_idx;
/* count of svids discovered */
int svid_cnt;
/* SVDM identity info (Id, Cert Stat, 0-4 Typec specific) */
uint32_t identity[PDO_MAX_OBJECTS - 1];
/* supported svids & corresponding vdo mode data */
struct svdm_svid_data svids[SVID_DISCOVERY_MAX];
/* 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_MAX_SIZE 7
#define VDM_VER10 0
#define VDM_VER20 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 (1 << 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 (1 << 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:
* [0] :: SVDM header
* [1] :: Identitiy header
* [2] :: Cert Stat VDO
* [3] :: (Product | Cable) VDO
* [4] :: AMA 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_I(name) VDO_INDEX_##name
/*
* SVDM Identity Header
* --------------------
* <31> :: data capable as a USB host
* <30> :: data capable as a USB device
* <29:27> :: product type
* <26> :: modal operation supported (1b == yes)
* <25:16> :: SBZ
* <15:0> :: USB-IF assigned VID for this cable vendor
*/
#define IDH_PTYPE_UNDEF 0
#define IDH_PTYPE_HUB 1
#define IDH_PTYPE_PERIPH 2
#define IDH_PTYPE_PCABLE 3
#define IDH_PTYPE_ACABLE 4
#define IDH_PTYPE_AMA 5
#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_VID(vdo) ((vdo) & 0xffff)
/*
* Cert Stat VDO
* -------------
* <31:20> : SBZ
* <19:0> : USB-IF assigned TID for this cable
*/
#define VDO_CSTAT(tid) ((tid) & 0xfffff)
#define PD_CSTAT_TID(vdo) ((vdo) & 0xfffff)
/*
* Product VDO
* -----------
* <31:16> : USB Product ID
* <15:0> : USB bcdDevice
*/
#define VDO_PRODUCT(pid, bcd) (((pid) & 0xffff) << 16 | ((bcd) & 0xffff))
#define PD_PRODUCT_PID(vdo) (((vdo) >> 16) & 0xffff)
/*
* Cable VDO
* ---------
* <31:28> :: Cable HW version
* <27:24> :: Cable FW version
* <23:20> :: SBZ
* <19:18> :: type-C to Type-A/B/C (00b == A, 01 == B, 10 == C)
* <17> :: Type-C to Plug/Receptacle (0b == plug, 1b == receptacle)
* <16:13> :: cable latency (0001 == <10ns(~1m length))
* <12:11> :: cable termination type (11b == both ends active VCONN req)
* <10> :: SSTX1 Directionality support (0b == fixed, 1b == cfgable)
* <9> :: SSTX2 Directionality support
* <8> :: SSRX1 Directionality support
* <7> :: SSRX2 Directionality support
* <6:5> :: Vbus current handling capability
* <4> :: Vbus through cable (0b == no, 1b == yes)
* <3> :: SOP" controller present? (0b == no, 1b == yes)
* <2:0> :: USB SS Signaling support
*/
#define CABLE_ATYPE 0
#define CABLE_BTYPE 1
#define CABLE_CTYPE 2
#define CABLE_PLUG 0
#define CABLE_RECEPTACLE 1
#define CABLE_CURR_1A5 0
#define CABLE_CURR_3A 1
#define CABLE_CURR_5A 2
#define CABLE_USBSS_U2_ONLY 0
#define CABLE_USBSS_U31_GEN1 1
#define CABLE_USBSS_U31_GEN2 2
#define VDO_CABLE(hw, fw, cbl, gdr, lat, term, tx1d, tx2d, rx1d, rx2d, cur, vps, sopp, usbss) \
(((hw) & 0x7) << 28 | ((fw) & 0x7) << 24 | ((cbl) & 0x3) << 18 \
| (gdr) << 17 | ((lat) & 0x7) << 13 | ((term) & 0x3) << 11 \
| (tx1d) << 10 | (tx2d) << 9 | (rx1d) << 8 | (rx2d) << 7 \
| ((cur) & 0x3) << 5 | (vps) << 4 | (sopp) << 3 \
| ((usbss) & 0x7))
/*
* AMA VDO
* ---------
* <31:28> :: Cable HW version
* <27:24> :: Cable FW version
* <23:12> :: SBZ
* <11> :: SSTX1 Directionality support (0b == fixed, 1b == cfgable)
* <10> :: SSTX2 Directionality support
* <9> :: SSRX1 Directionality support
* <8> :: SSRX2 Directionality support
* <7:5> :: Vconn power
* <4> :: Vconn power required
* <3> :: Vbus power required
* <2:0> :: USB SS Signaling support
*/
#define VDO_AMA(hw, fw, tx1d, tx2d, rx1d, rx2d, vcpwr, vcr, vbr, usbss) \
(((hw) & 0x7) << 28 | ((fw) & 0x7) << 24 \
| (tx1d) << 11 | (tx2d) << 10 | (rx1d) << 9 | (rx2d) << 8 \
| ((vcpwr) & 0x3) << 5 | (vcr) << 4 | (vbr) << 3 \
| ((usbss) & 0x7))
#define PD_VDO_AMA_VCONN_REQ(vdo) (((vdo) >> 4) & 1)
#define PD_VDO_AMA_VBUS_REQ(vdo) (((vdo) >> 3) & 1)
#define AMA_VCONN_PWR_1W 0
#define AMA_VCONN_PWR_1W5 1
#define AMA_VCONN_PWR_2W 2
#define AMA_VCONN_PWR_3W 3
#define AMA_VCONN_PWR_4W 4
#define AMA_VCONN_PWR_5W 5
#define AMA_VCONN_PWR_6W 6
#define AMA_USBSS_U2_ONLY 0
#define AMA_USBSS_U31_GEN1 1
#define AMA_USBSS_U31_GEN2 2
#define AMA_USBSS_BBONLY 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 PD_DP_PIN_CAPS(x) ((((x) >> 6) & 0x1) ? (((x) >> 16) & 0x3f) \
: (((x) >> 8) & 0x3f))
#define MODE_DP_PIN_A 0x01
#define MODE_DP_PIN_B 0x02
#define MODE_DP_PIN_C 0x04
#define MODE_DP_PIN_D 0x08
#define MODE_DP_PIN_E 0x10
#define MODE_DP_PIN_F 0x20
/* 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
#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
/*
* 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_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_US)
#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
/* Timeout for message receive in microseconds */
#define USB_PD_RX_TMOUT_US 1800
/* --- Protocol layer functions --- */
enum pd_states {
PD_STATE_DISABLED,
PD_STATE_SUSPENDED,
#ifdef CONFIG_USB_PD_DUAL_ROLE
PD_STATE_SNK_DISCONNECTED,
PD_STATE_SNK_DISCONNECTED_DEBOUNCE,
PD_STATE_SNK_HARD_RESET_RECOVER,
PD_STATE_SNK_DISCOVERY,
PD_STATE_SNK_REQUESTED,
PD_STATE_SNK_TRANSITION,
PD_STATE_SNK_READY,
PD_STATE_SNK_SWAP_INIT,
PD_STATE_SNK_SWAP_SNK_DISABLE,
PD_STATE_SNK_SWAP_SRC_DISABLE,
PD_STATE_SNK_SWAP_STANDBY,
PD_STATE_SNK_SWAP_COMPLETE,
#endif /* CONFIG_USB_PD_DUAL_ROLE */
PD_STATE_SRC_DISCONNECTED,
PD_STATE_SRC_DISCONNECTED_DEBOUNCE,
PD_STATE_SRC_HARD_RESET_RECOVER,
PD_STATE_SRC_STARTUP,
PD_STATE_SRC_DISCOVERY,
PD_STATE_SRC_NEGOCIATE,
PD_STATE_SRC_ACCEPTED,
PD_STATE_SRC_POWERED,
PD_STATE_SRC_TRANSITION,
PD_STATE_SRC_READY,
PD_STATE_SRC_GET_SINK_CAP,
PD_STATE_DR_SWAP,
#ifdef CONFIG_USB_PD_DUAL_ROLE
PD_STATE_SRC_SWAP_INIT,
PD_STATE_SRC_SWAP_SNK_DISABLE,
PD_STATE_SRC_SWAP_SRC_DISABLE,
PD_STATE_SRC_SWAP_STANDBY,
#ifdef CONFIG_USBC_VCONN_SWAP
PD_STATE_VCONN_SWAP_SEND,
PD_STATE_VCONN_SWAP_INIT,
PD_STATE_VCONN_SWAP_READY,
#endif /* CONFIG_USBC_VCONN_SWAP */
#endif /* CONFIG_USB_PD_DUAL_ROLE */
PD_STATE_SOFT_RESET,
PD_STATE_HARD_RESET_SEND,
PD_STATE_HARD_RESET_EXECUTE,
#ifdef CONFIG_COMMON_RUNTIME
PD_STATE_BIST_RX,
PD_STATE_BIST_TX,
#endif
#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
PD_STATE_DRP_AUTO_TOGGLE,
#endif
/* Number of states. Not an actual state. */
PD_STATE_COUNT,
};
#define PD_FLAGS_PING_ENABLED (1 << 0) /* SRC_READY pings enabled */
#define PD_FLAGS_PARTNER_DR_POWER (1 << 1) /* port partner is dualrole power */
#define PD_FLAGS_PARTNER_DR_DATA (1 << 2) /* port partner is dualrole data */
#define PD_FLAGS_CHECK_IDENTITY (1 << 3) /* discover identity in READY */
#define PD_FLAGS_SNK_CAP_RECVD (1 << 4) /* sink capabilities received */
#define PD_FLAGS_TCPC_DRP_TOGGLE (1 << 5) /* TCPC-controlled DRP toggling */
#define PD_FLAGS_EXPLICIT_CONTRACT (1 << 6) /* explicit pwr contract in place */
#define PD_FLAGS_VBUS_NEVER_LOW (1 << 7) /* VBUS input has never been low */
#define PD_FLAGS_PREVIOUS_PD_CONN (1 << 8) /* previously PD connected */
#define PD_FLAGS_CHECK_PR_ROLE (1 << 9) /* check power role in READY */
#define PD_FLAGS_CHECK_DR_ROLE (1 << 10)/* check data role in READY */
#define PD_FLAGS_PARTNER_EXTPOWER (1 << 11)/* port partner has external pwr */
#define PD_FLAGS_VCONN_ON (1 << 12)/* vconn is being sourced */
#define PD_FLAGS_TRY_SRC (1 << 13)/* Try.SRC states are active */
#define PD_FLAGS_PARTNER_USB_COMM (1 << 14)/* port partner is USB comms */
#define PD_FLAGS_UPDATE_SRC_CAPS (1 << 15)/* send new source capabilities */
#define PD_FLAGS_TS_DTS_PARTNER (1 << 16)/* partner has rp/rp or rd/rd */
/* Flags to clear on a disconnect */
#define PD_FLAGS_RESET_ON_DISCONNECT_MASK (PD_FLAGS_PARTNER_DR_POWER | \
PD_FLAGS_PARTNER_DR_DATA | \
PD_FLAGS_CHECK_IDENTITY | \
PD_FLAGS_SNK_CAP_RECVD | \
PD_FLAGS_TCPC_DRP_TOGGLE | \
PD_FLAGS_EXPLICIT_CONTRACT | \
PD_FLAGS_PREVIOUS_PD_CONN | \
PD_FLAGS_CHECK_PR_ROLE | \
PD_FLAGS_CHECK_DR_ROLE | \
PD_FLAGS_PARTNER_EXTPOWER | \
PD_FLAGS_VCONN_ON | \
PD_FLAGS_TRY_SRC | \
PD_FLAGS_PARTNER_USB_COMM | \
PD_FLAGS_UPDATE_SRC_CAPS | \
PD_FLAGS_TS_DTS_PARTNER)
enum pd_cc_states {
PD_CC_NONE,
/* From DFP perspective */
PD_CC_NO_UFP,
PD_CC_AUDIO_ACC,
PD_CC_DEBUG_ACC,
PD_CC_UFP_ATTACHED,
/* From UFP perspective */
PD_CC_DFP_ATTACHED
};
#ifdef CONFIG_USB_PD_DUAL_ROLE
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,
};
/**
* Get dual role state
*
* @return Current dual-role state, from enum pd_dual_role_states
*/
enum pd_dual_role_states pd_get_dual_role(void);
/**
* Set dual role state, from among enum pd_dual_role_states
*
* @param state New state of dual-role port, selected from
* enum pd_dual_role_states
*/
void pd_set_dual_role(enum pd_dual_role_states state);
/**
* Get role, from among PD_ROLE_SINK and PD_ROLE_SOURCE
*
* @param port Port number from which to get role
*/
int pd_get_role(int port);
#endif
/* 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 */
};
/* Battery Status Data Object fields for REV 3.0 */
#define BSDO_CAP_UNKNOWN 0xffff
#define BSDO_CAP(n) (((n) & 0xffff) << 16)
#define BSDO_INVALID (1 << 8)
#define BSDO_PRESENT (1 << 9)
#define BSDO_DISCHARGING (1 << 10)
#define BSDO_IDLE (1 << 11)
/* Get Battery Cap Message fields for REV 3.0 */
#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 */
};
/* 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_VENDOR_DEF = 15,
};
/* Protocol revision */
#define PD_REV10 0
#define PD_REV20 1
#define PD_REV30 2
/* Power role */
#define PD_ROLE_SINK 0
#define PD_ROLE_SOURCE 1
/* Data role */
#define PD_ROLE_UFP 0
#define PD_ROLE_DFP 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) \
((1 << 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)
#define PD_HEADER_TYPE(header) ((header) & 0xF)
#define PD_HEADER_ID(header) (((header) >> 9) & 7)
#define PD_HEADER_REV(header) (((header) >> 6) & 3)
/* 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)
/* 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 --- */
/* Request types for pd_build_request() */
enum pd_request_type {
PD_REQUEST_VSAFE5V,
PD_REQUEST_MAX,
};
#ifdef CONFIG_USB_PD_REV30
/**
* Get current PD Revision
*
* @param port USB-C port number
* @return 0 for PD_REV1.0, 1 for PD_REV2.0, 2 for PD_REV3.0
*/
int pd_get_rev(int port);
/**
* Get current PD VDO Version
*
* @param port USB-C port number
* @return 0 for PD_REV1.0, 1 for PD_REV2.0
*/
int pd_get_vdo_ver(int port);
#else
#define pd_get_rev(n) PD_REV20
#define pd_get_vdo_ver(n) VDM_VER10
#endif
/**
* Decide which PDO to choose from the source capabilities.
*
* @param port USB-C port number
* @param rdo requested Request Data Object.
* @param ma selected current limit (stored on success)
* @param mv selected supply voltage (stored on success)
* @param req_type request type
* @return <0 if invalid, else EC_SUCCESS
*/
int pd_build_request(int port, uint32_t *rdo, uint32_t *ma, uint32_t *mv,
enum pd_request_type req_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);
/**
* Callback with 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_callback(int port, int cnt, uint32_t *src_caps);
/**
* 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);
/**
* Find PDO index that offers the most amount of power and stays within
* max_mv voltage.
*
* @param port USB-C port number
* @param max_mv maximum voltage (or -1 if no limit)
* @param pdo raw pdo corresponding to index, or index 0 on error (output)
* @return index of PDO within source cap packet
*/
int pd_find_pdo_index(int port, int max_mv, uint32_t *pdo);
/**
* Extract power information out of a Power Data Object (PDO)
*
* @param pdo raw pdo to extract
* @param ma current of the PDO (output)
* @param mv voltage of the PDO (output)
*/
void pd_extract_pdo_power(uint32_t pdo, uint32_t *ma, uint32_t *mv);
/**
* 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
*/
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.
*/
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.
*/
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 (1 << 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
*/
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, int rp);
/**
* Verify board specific health status : current, voltages...
*
* @return EC_SUCCESS if the board is good, <0 else.
*/
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
*/
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
*/
int pd_check_data_swap(int port, int 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
*/
void pd_check_pr_role(int port, int 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
*/
void pd_check_dr_role(int port, int dr_role, int flags);
/**
* Check if we should charge from this device. This is
* basically a white-list for chargers that are dual-role,
* don't set the externally powered 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
*/
void pd_execute_data_swap(int port, int data_role);
/**
* 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.
*/
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.
* @return if >0, number of VDOs to send back.
*/
int pd_svdm(int port, int cnt, uint32_t *payload, uint32_t **rpayload);
/**
* 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 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, 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 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, uint16_t svid, int opos);
/**
* Initialize policy engine for DFP
*
* @param port USB-C port number
*/
void pd_dfp_pe_init(int port);
/**
* 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);
/**
* 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_current_image);
/**
* 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);
/* Power Data Objects for the source and the sink */
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.
*
* @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 svid USB standard or vendor id
* @return object position of mode chosen in alternate mode otherwise zero.
*/
int pd_alt_mode(int port, 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 enable pass 0 to resume, anything else to suspend
*/
void pd_set_suspend(int port, int enable);
/**
* 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, int 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);
/**
* Initialize the Power Delivery state machine
*/
void pd_init(int port);
/**
* Run the state machine. This function must be called regularly
* to iterate through the state machine. It uses get_time() to
* determine what actions to take each call.
*/
void pd_run_state_machine(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);
/**
* 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
*/
int pd_get_polarity(int port);
/**
* Get port partner data swap capable status
*
* @param port USB-C port number
*/
int pd_get_partner_data_swap_capable(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 a DTS or TS capable of entering debug
* mode (eg. is presenting Rp/Rp or Rd/Rd).
*
* @param port USB-C port number
*/
int pd_ts_dts_plugged(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 */
#ifdef __cplusplus
}
#endif
#endif /* __CROS_EC_USB_PD_H */
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