| /* 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 __CROS_EC_USB_PD_H |
| #define __CROS_EC_USB_PD_H |
| |
| #include "common.h" |
| |
| /* PD Host command timeout */ |
| #define PD_HOST_COMMAND_TIMEOUT_US SECOND |
| |
| #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 */ |
| |
| /* --- 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)) |
| |
| #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 */ |
| #define PD_T_BIST_TRANSMIT (50*MSEC) /* 50ms (used for task_wait arg) */ |
| #define PD_T_BIST_RECEIVE (60*MSEC) /* 60ms (max time to process bist) */ |
| #define PD_T_VCONN_SOURCE_ON (100*MSEC) /* 100ms */ |
| #define PD_T_TRY_SRC (125*MSEC) /* Max time for Try.SRC state */ |
| #define PD_T_TRY_WAIT (600*MSEC) /* Max time for TryWait.SNK state */ |
| |
| /* 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; |
| |
| /* 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. |
| */ |
| |
| /* |
| * 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 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) |
| #define HPD_USTREAM_DEBOUNCE_IRQ (250) |
| #define HPD_DSTREAM_DEBOUNCE_IRQ (750) /* 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_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_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 |
| |
| /* 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_DATA_SWAPPED (1 << 3) /* data swap complete */ |
| #define PD_FLAGS_SNK_CAP_RECVD (1 << 4) /* sink capabilities received */ |
| #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 */ |
| /* 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_DATA_SWAPPED | \ |
| PD_FLAGS_SNK_CAP_RECVD | \ |
| 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) |
| |
| |
| 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 { |
| 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 |
| |
| /* 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 |
| |
| /* Port role at startup */ |
| #ifdef CONFIG_USB_PD_DUAL_ROLE |
| #define PD_ROLE_DEFAULT PD_ROLE_SINK |
| #else |
| #define PD_ROLE_DEFAULT PD_ROLE_SOURCE |
| #endif |
| |
| /* 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 |
| |
| /* 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, |
| }; |
| |
| /** |
| * 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); |
| |
| /** |
| * 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); |
| |
| /** |
| * 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); |
| |
| /** |
| * 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. |
| * @return EC_SUCCESS if we can get the requested voltage/OP, <0 else. |
| */ |
| int pd_check_requested_voltage(uint32_t rdo); |
| |
| /** |
| * Run board specific checks on request message |
| * |
| * @return EC_SUCCESS if request is ok , <0 else. |
| */ |
| int pd_board_check_request(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 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); |
| |
| /** |
| * 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); |
| |
| /** |
| * 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_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); |
| |
| /** |
| * Request that a host event be sent to notify the AP of a PD power event. |
| * |
| * @param mask host event mask. |
| */ |
| void pd_send_host_event(int mask); |
| |
| /** |
| * 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); |
| |
| /* 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); |
| |
| /* --- 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); |
| |
| /** |
| * 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); |
| |
| /** |
| * 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 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); |
| |
| /* ----- 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 /* __CROS_EC_USB_PD_H */ |