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OpenCellular/include/usb_pd.h
Vincent Palatin 4e75e20f4e Add PD events logging 
Add a FIFO to log important events on the PD MCU and coming from the PD
accessories.

The retrieval of the accessories log from the accessories by the PD MCU
is not implemented yet.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BRANCH=samus
BUG=chrome-os-partner:32785
TEST=execute "ectool --name=cros_pd pdlog"
before and after plugging Zinger charger.

Change-Id: If96d73e711ff6ad64cfb99bd3e4d2d8f2643f19a
Reviewed-on: https://chromium-review.googlesource.com/238854
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Trybot-Ready: Vincent Palatin <vpalatin@chromium.org>
2015-01-15 01:07:02 +00:00

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/* 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 "common.h"
/* PD Host command timeout */
#define PD_HOST_COMMAND_TIMEOUT_US SECOND
enum pd_errors {
PD_ERR_INVAL = -1, /* Invalid packet */
PD_ERR_HARD_RESET = -2, /* Got a Hard-Reset packet */
PD_ERR_CRC = -3, /* CRC mismatch */
PD_ERR_ID = -4, /* Invalid ID number */
};
/* incoming packet event (for the USB PD task) */
#define PD_EVENT_RX (1<<2)
/* --- 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.
*/
#define PDO_TYPE_FIXED (0 << 30)
#define PDO_TYPE_BATTERY (1 << 30)
#define PDO_TYPE_VARIABLE (2 << 30)
#define PDO_TYPE_MASK (3 << 30)
#define PDO_FIXED_DUAL_ROLE (1 << 29) /* Dual role device */
#define PDO_FIXED_SUSPEND (1 << 28) /* USB Suspend supported */
#define PDO_FIXED_EXTERNAL (1 << 27) /* Externally powered */
#define PDO_FIXED_COMM_CAP (1 << 26) /* USB Communications Capable */
#define PDO_FIXED_DATA_SWAP (1 << 25) /* Data role swap command supported */
#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 (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))
/* TODO(tbroch) is there a finite number for these in the spec */
#define SVID_DISCOVERY_MAX 16
/* Timers */
#define PD_T_SEND_SOURCE_CAP (100*MSEC) /* between 100ms and 200ms */
#define PD_T_SINK_WAIT_CAP (240*MSEC) /* between 210ms and 250ms */
#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 (15*MSEC) /* between 10ms and 20ms */
#define PD_T_ERROR_RECOVERY (25*MSEC) /* 25ms */
#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_SINK_ADJ (55*MSEC) /* between PD_T_DEBOUNCE 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 */
/* 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 (100*MSEC) /* at least 100ms */
#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 */
/* 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;
struct svdm_amode_data {
const struct svdm_amode_fx *fx;
int index;
uint32_t mode_caps;
};
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 */
/* 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 mode */
struct svdm_amode_data amode;
};
/*
* VDO : Vendor Defined Message Object
* VDM object is minimum of VDM header + 6 additional data objects.
*/
/*
* VDM header
* ----------
* <31:16> :: SVID
* <15> :: VDM type ( 1b == structured, 0b == unstructured )
* <14:13> :: Structured VDM version (can only be 00 == 1.0 currently)
* <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_MAX_SIZE 7
#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 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> : sink pin assignment supported
* <15:8> : source 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_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_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_HPD_IRQ(x) ((x >> 8) & 1)
#define PD_VDO_HPD_LVL(x) ((x >> 7) & 1)
#define HPD_DEBOUNCE_LVL (100*MSEC)
#define HPD_DEBOUNCE_IRQ (2*MSEC)
/*
* DisplayPort Configure VDO
* -------------------------
* <31:24> : SBZ
* <23:16> : sink pin assignment supported (same as mode caps)
* <15:8> : source pin assignment supported (same as 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|10 == DP, 11 == reserved
*/
#define VDO_DP_CFG(snkp, srcp, sig, cfg) \
(((snkp) & 0xff) << 16 | ((srcp) & 0xff) << 8 \
| ((sig) & 0xf) << 2 | ((cfg) & 0x3))
#define PD_DP_CFG_DPON(x) (((x & 0x3) == 1) || ((x & 0x3) == 2))
/*
* 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
/*
* 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
/* Timeout for message receive in microseconds */
#define USB_PD_RX_TMOUT_US 1800
/* --- Protocol layer functions --- */
enum pd_states {
PD_STATE_DISABLED,
#ifdef CONFIG_USB_PD_DUAL_ROLE
PD_STATE_SUSPENDED,
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_DR_SWAP,
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_ACCESSORY,
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_SRC_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,
PD_STATE_SRC_TO_FORCE_SINK,
#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,
#endif
/* Number of states. Not an actual state. */
PD_STATE_COUNT,
};
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_ACC_PRESENT,
PD_CC_DFP_ATTACHED
};
#ifdef CONFIG_USB_PD_DUAL_ROLE
enum pd_dual_role_states {
PD_DRP_TOGGLE_ON,
PD_DRP_TOGGLE_OFF,
PD_DRP_FORCE_SINK,
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 */
};
/* 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 */
PD_DATA_VENDOR_DEF = 15,
};
/* Protocol revision */
#define PD_REV10 0
#define PD_REV20 1
/* Port role */
#define PD_ROLE_SINK 0
#define PD_ROLE_SOURCE 1
#define PD_ROLE_UFP 0
#define PD_ROLE_DFP 1
/* build message header */
#define PD_HEADER(type, prole, drole, id, cnt) \
((type) | (PD_REV20 << 6) | \
((drole) << 5) | ((prole) << 8) | \
((id) << 9) | ((cnt) << 12))
#define PD_HEADER_CNT(header) (((header) >> 12) & 7)
#define PD_HEADER_TYPE(header) ((header) & 0xF)
#define PD_HEADER_ID(header) (((header) >> 9) & 7)
/* 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
/* --- Policy layer functions --- */
/* Request types for pd_build_request() */
enum pd_request_type {
PD_REQUEST_VSAFE5V,
PD_REQUEST_MAX,
};
/**
* Decide which PDO to choose from the source capabilities.
*
* @param cnt the number of Power Data Objects.
* @param src_caps Power Data Objects representing the source capabilities.
* @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 cnt, uint32_t *src_caps, uint32_t *rdo,
uint32_t *ma, uint32_t *mv, enum pd_request_type req_type);
/**
* 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);
/**
* 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);
/**
* Request a new operating voltage.
*
* @param rdo Request Data Object with the selected operating point.
* @return EC_SUCCESS if we can get the requested voltage/OP, <0 else.
*/
int pd_check_requested_voltage(uint32_t rdo);
/**
* 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 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 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);
/**
* 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, uint32_t max_ma,
uint32_t supply_voltage);
/**
* Verify board specific health status : current, voltages...
*
* @return EC_SUCCESS if the board is good, <0 else.
*/
int pd_board_checks(void);
/**
* 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 current power role for potential power swap
*
* @param port USB-C port number
* @param pr_role Our power role
* @param partner_pr_swap Partner supports PR_SWAP
*/
void pd_check_pr_role(int port, int pr_role, int partner_pr_swap);
/**
* Check current data role for potential data swap
*
* @param port USB-C port number
* @param dr_role Our data role
* @param partner_dr_swap Partner supports DR_SWAP
*/
void pd_check_dr_role(int port, int dr_role, int partner_dr_swap);
/**
* 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);
/**
* Exit alternate mode on DFP
*
* @param port USB-C port number
* @return VDO to send to UFP or zero if none
*/
uint32_t pd_dfp_exit_mode(int port);
/**
* Initialize policy engine for DFP
*
* @param port USB-C port number
*/
void pd_dfp_pe_init(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
*/
void pd_dev_store_rw_hash(int port, uint16_t dev_id, uint32_t *rw_hash,
uint32_t ec_current_image);
/**
* 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_snk_pdo[];
extern const int pd_snk_pdo_cnt;
/**
* Get PD source power data objects.
*
* @param src_pdo pointer to the data to return.
* @return number of PDOs returned.
*/
int pd_get_source_pdo(const uint32_t **src_pdo);
/* Muxing for the USB type C */
enum typec_mux {
TYPEC_MUX_NONE,
TYPEC_MUX_USB,
TYPEC_MUX_DP,
TYPEC_MUX_DOCK,
};
/**
* Configure superspeed muxes on type-C port.
*
* @param port port number.
* @param mux selected function.
* @param polarity plug polarity (0=CC1, 1=CC2).
*/
void board_set_usb_mux(int port, enum typec_mux mux, int polarity);
/**
* Query superspeed mux status on type-C port.
*
* @param port port number.
* @param dp_str pointer to the DP string to return.
* @param usb_str pointer to the USB string to return.
* @return Non-zero if superspeed connection is enabled; otherwise, zero.
*/
int board_get_usb_mux(int port, const char **dp_str, const char **usb_str);
/**
* Flip the superspeed muxes on type-C port.
*
* This is used for factory test automation. Note that this function should
* only flip the superspeed muxes and leave CC lines alone. Without further
* changes, this function MUST ONLY be used for testing purpose, because
* the protocol layer loses track of the superspeed polarity and DP/USB3.0
* connection may break.
*
* @param port port number.
*/
void board_flip_usb_mux(int port);
/**
* Determine if in alternate mode or not.
*
* @param port port number.
* @return object position of mode chosen in alternate mode otherwise zero.
*/
int pd_alt_mode(int port);
/**
* 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.
*/
void pd_usb_billboard_deferred(void);
/* --- 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);
/**
* 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);
/* 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
*/
void pd_hw_init(int port);
/* --- Protocol layer functions --- */
/**
* Get connected state
*
* @param port USB-C port number
* @return True if port is in connected state
*/
int pd_is_connected(int port);
/**
* Get port polarity.
*
* @param port USB-C port number
*/
int pd_get_polarity(int port);
/**
* Get port partner dual-role capable status
*
* @param port USB-C port number
*/
int pd_get_partner_dualrole_capable(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);
/**
* 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 enable Enable flag to set
*/
void pd_comm_enable(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 sysjump */
void pd_prepare_sysjump(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);
/* ----- 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 */
#endif /* __USB_PD_H */
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