include/linux/usb/tcpci.h - third_party/kernel - Git at Google


            
            /* SPDX-License-Identifier: GPL-2.0+ */

            
            /*

            
             * Copyright 2015-2017 Google, Inc

            
             *

            
             * USB Type-C Port Controller Interface.

            
             */


            #ifndef __LINUX_USB_TCPCI_H

            
            #define __LINUX_USB_TCPCI_H


            #include <linux/usb/typec.h>

            
            #include <linux/usb/tcpm.h>


            #define TCPC_VENDOR_ID			0x0

            
            #define TCPC_PRODUCT_ID			0x2

            
            #define TCPC_BCD_DEV			0x4

            
            #define TCPC_TC_REV			0x6

            
            #define TCPC_PD_REV			0x8

            
            #define TCPC_PD_INT_REV			0xa


            #define TCPC_ALERT			0x10

            
            #define TCPC_ALERT_EXTND		BIT(14)

            
            #define TCPC_ALERT_EXTENDED_STATUS	BIT(13)

            
            #define TCPC_ALERT_VBUS_DISCNCT		BIT(11)

            
            #define TCPC_ALERT_RX_BUF_OVF		BIT(10)

            
            #define TCPC_ALERT_FAULT		BIT(9)

            
            #define TCPC_ALERT_V_ALARM_LO		BIT(8)

            
            #define TCPC_ALERT_V_ALARM_HI		BIT(7)

            
            #define TCPC_ALERT_TX_SUCCESS		BIT(6)

            
            #define TCPC_ALERT_TX_DISCARDED		BIT(5)

            
            #define TCPC_ALERT_TX_FAILED		BIT(4)

            
            #define TCPC_ALERT_RX_HARD_RST		BIT(3)

            
            #define TCPC_ALERT_RX_STATUS		BIT(2)

            
            #define TCPC_ALERT_POWER_STATUS		BIT(1)

            
            #define TCPC_ALERT_CC_STATUS		BIT(0)


            #define TCPC_ALERT_MASK			0x12

            
            #define TCPC_POWER_STATUS_MASK		0x14


            #define TCPC_FAULT_STATUS_MASK			0x15

            
            #define TCPC_FAULT_STATUS_MASK_VCONN_OC		BIT(1)


            #define TCPC_EXTENDED_STATUS_MASK		0x16

            
            #define TCPC_EXTENDED_STATUS_MASK_VSAFE0V	BIT(0)


            #define TCPC_ALERT_EXTENDED_MASK	0x17

            
            #define TCPC_SINK_FAST_ROLE_SWAP	BIT(0)


            #define TCPC_CONFIG_STD_OUTPUT		0x18

            
            #define TCPC_CONFIG_STD_OUTPUT_ORIENTATION_MASK		BIT(0)

            
            #define TCPC_CONFIG_STD_OUTPUT_ORIENTATION_NORMAL	0

            
            #define TCPC_CONFIG_STD_OUTPUT_ORIENTATION_FLIPPED	1


            #define TCPC_TCPC_CTRL			0x19

            
            #define TCPC_TCPC_CTRL_ORIENTATION	BIT(0)

            
            #define PLUG_ORNT_CC1			0

            
            #define PLUG_ORNT_CC2			1

            
            #define TCPC_TCPC_CTRL_BIST_TM		BIT(1)

            
            #define TCPC_TCPC_CTRL_EN_LK4CONN_ALRT	BIT(6)


            #define TCPC_EXTENDED_STATUS		0x20

            
            #define TCPC_EXTENDED_STATUS_VSAFE0V	BIT(0)


            #define TCPC_ROLE_CTRL			0x1a

            
            #define TCPC_ROLE_CTRL_DRP		BIT(6)

            
            #define TCPC_ROLE_CTRL_RP_VAL		GENMASK(5, 4)

            
            #define TCPC_ROLE_CTRL_RP_VAL_DEF	0x0

            
            #define TCPC_ROLE_CTRL_RP_VAL_1_5	0x1

            
            #define TCPC_ROLE_CTRL_RP_VAL_3_0	0x2

            
            #define TCPC_ROLE_CTRL_CC2		GENMASK(3, 2)

            
            #define TCPC_ROLE_CTRL_CC1		GENMASK(1, 0)

            
            #define TCPC_ROLE_CTRL_CC_RA		0x0

            
            #define TCPC_ROLE_CTRL_CC_RP		0x1

            
            #define TCPC_ROLE_CTRL_CC_RD		0x2

            
            #define TCPC_ROLE_CTRL_CC_OPEN		0x3


            #define TCPC_FAULT_CTRL			0x1b


            #define TCPC_POWER_CTRL			0x1c

            
            #define TCPC_POWER_CTRL_VCONN_ENABLE	BIT(0)

            
            #define TCPC_POWER_CTRL_BLEED_DISCHARGE	BIT(3)

            
            #define TCPC_POWER_CTRL_AUTO_DISCHARGE	BIT(4)

            
            #define TCPC_DIS_VOLT_ALRM		BIT(5)

            
            #define TCPC_POWER_CTRL_VBUS_VOLT_MON	BIT(6)

            
            #define TCPC_FAST_ROLE_SWAP_EN		BIT(7)


            #define TCPC_CC_STATUS			0x1d

            
            #define TCPC_CC_STATUS_TOGGLING		BIT(5)

            
            #define TCPC_CC_STATUS_TERM		BIT(4)

            
            #define TCPC_CC_STATUS_TERM_RP		0

            
            #define TCPC_CC_STATUS_TERM_RD		1

            
            #define TCPC_CC_STATUS_CC2		GENMASK(3, 2)

            
            #define TCPC_CC_STATUS_CC1		GENMASK(1, 0)

            
            #define TCPC_CC_STATE_SRC_OPEN		0


            #define TCPC_POWER_STATUS		0x1e

            
            #define TCPC_POWER_STATUS_DBG_ACC_CON	BIT(7)

            
            #define TCPC_POWER_STATUS_UNINIT	BIT(6)

            
            #define TCPC_POWER_STATUS_SOURCING_VBUS	BIT(4)

            
            #define TCPC_POWER_STATUS_VBUS_DET	BIT(3)

            
            #define TCPC_POWER_STATUS_VBUS_PRES	BIT(2)

            
            #define TCPC_POWER_STATUS_VCONN_PRES	BIT(1)

            
            #define TCPC_POWER_STATUS_SINKING_VBUS	BIT(0)


            #define TCPC_FAULT_STATUS		0x1f

            
            #define TCPC_FAULT_STATUS_ALL_REG_RST_TO_DEFAULT BIT(7)

            
            #define TCPC_FAULT_STATUS_VCONN_OC	BIT(1)


            #define TCPC_ALERT_EXTENDED		0x21


            #define TCPC_COMMAND			0x23

            
            #define TCPC_CMD_WAKE_I2C		0x11

            
            #define TCPC_CMD_DISABLE_VBUS_DETECT	0x22

            
            #define TCPC_CMD_ENABLE_VBUS_DETECT	0x33

            
            #define TCPC_CMD_DISABLE_SINK_VBUS	0x44

            
            #define TCPC_CMD_SINK_VBUS		0x55

            
            #define TCPC_CMD_DISABLE_SRC_VBUS	0x66

            
            #define TCPC_CMD_SRC_VBUS_DEFAULT	0x77

            
            #define TCPC_CMD_SRC_VBUS_HIGH		0x88

            
            #define TCPC_CMD_LOOK4CONNECTION	0x99

            
            #define TCPC_CMD_RXONEMORE		0xAA

            
            #define TCPC_CMD_I2C_IDLE		0xFF


            #define TCPC_DEV_CAP_1			0x24

            
            #define TCPC_DEV_CAP_2			0x26

            
            #define TCPC_STD_INPUT_CAP		0x28

            
            #define TCPC_STD_OUTPUT_CAP		0x29

            
            #define TCPC_STD_OUTPUT_CAP_ORIENTATION	BIT(0)


            #define TCPC_MSG_HDR_INFO		0x2e

            
            #define TCPC_MSG_HDR_INFO_DATA_ROLE	BIT(3)

            
            #define TCPC_MSG_HDR_INFO_REV		GENMASK(2, 1)

            
            #define TCPC_MSG_HDR_INFO_PWR_ROLE	BIT(0)


            #define TCPC_RX_DETECT			0x2f

            
            #define TCPC_RX_DETECT_HARD_RESET	BIT(5)

            
            #define TCPC_RX_DETECT_SOP		BIT(0)

            
            #define TCPC_RX_DETECT_SOP1		BIT(1)

            
            #define TCPC_RX_DETECT_SOP2		BIT(2)

            
            #define TCPC_RX_DETECT_DBG1		BIT(3)

            
            #define TCPC_RX_DETECT_DBG2		BIT(4)


            #define TCPC_RX_BYTE_CNT		0x30

            
            #define TCPC_RX_BUF_FRAME_TYPE		0x31

            
            #define TCPC_RX_BUF_FRAME_TYPE_SOP	0

            
            #define TCPC_RX_BUF_FRAME_TYPE_SOP1	1

            
            #define TCPC_RX_BUF_FRAME_TYPE_MASK	GENMASK(2, 0)

            
            #define TCPC_RX_HDR			0x32

            
            #define TCPC_RX_DATA			0x34 /* through 0x4f */


            #define TCPC_TRANSMIT			0x50

            
            #define TCPC_TRANSMIT_RETRY		GENMASK(5, 4)

            
            #define TCPC_TRANSMIT_TYPE		GENMASK(2, 0)


            #define TCPC_TX_BYTE_CNT		0x51

            
            #define TCPC_TX_HDR			0x52

            
            #define TCPC_TX_DATA			0x54 /* through 0x6f */


            #define TCPC_VBUS_VOLTAGE			0x70

            
            #define TCPC_VBUS_VOLTAGE_MASK			0x3ff

            
            #define TCPC_VBUS_VOLTAGE_LSB_MV		25

            
            #define TCPC_VBUS_SINK_DISCONNECT_THRESH	0x72

            
            #define TCPC_VBUS_SINK_DISCONNECT_THRESH_LSB_MV	25

            
            #define TCPC_VBUS_SINK_DISCONNECT_THRESH_MAX	0x3ff

            
            #define TCPC_VBUS_STOP_DISCHARGE_THRESH		0x74

            
            #define TCPC_VBUS_VOLTAGE_ALARM_HI_CFG		0x76

            
            #define TCPC_VBUS_VOLTAGE_ALARM_LO_CFG		0x78


            /* I2C_WRITE_BYTE_COUNT + 1 when TX_BUF_BYTE_x is only accessible I2C_WRITE_BYTE_COUNT */

            
            #define TCPC_TRANSMIT_BUFFER_MAX_LEN		31


            #define tcpc_presenting_rd(reg, cc) \

            
            	(!(TCPC_ROLE_CTRL_DRP & (reg)) && \

            
            	 FIELD_GET(TCPC_ROLE_CTRL_## cc, reg) == TCPC_ROLE_CTRL_CC_RD)


            struct tcpci;


            /*

            
             * @TX_BUF_BYTE_x_hidden:

            
             *		optional; Set when TX_BUF_BYTE_x can only be accessed through I2C_WRITE_BYTE_COUNT.

            
             * @frs_sourcing_vbus:

            
             *		Optional; Callback to perform chip specific operations when FRS

            
             *		is sourcing vbus.

            
             * @auto_discharge_disconnect:

            
             *		Optional; Enables TCPC to autonomously discharge vbus on disconnect.

            
             * @vbus_vsafe0v:

            
             *		optional; Set when TCPC can detect whether vbus is at VSAFE0V.

            
             * @set_partner_usb_comm_capable:

            
             *		Optional; The USB Communications Capable bit indicates if port

            
             *		partner is capable of communication over the USB data lines

            
             *		(e.g. D+/- or SS Tx/Rx). Called to notify the status of the bit.

            
             * @check_contaminant:

            
             *		Optional; The callback is invoked when chiplevel drivers indicated

            
             *		that the USB port needs to be checked for contaminant presence.

            
             *		Chip level drivers are expected to check for contaminant and call

            
             *		tcpm_clean_port when the port is clean to put the port back into

            
             *		toggling state.

            
             * @cable_comm_capable

            
             *		optional; Set when TCPC can communicate with cable plugs over SOP'

            
             * @attempt_vconn_swap_discovery:

            
             *		Optional; The callback is called by the TCPM when the result of

            
             *		a Discover Identity request indicates that the port partner is

            
             *		a receptacle capable of modal operation. Chip level TCPCI drivers

            
             *		can implement their own policy to determine if and when a Vconn

            
             *		swap following Discover Identity on SOP' occurs.

            
             *		Return true when the TCPM is allowed to request a Vconn swap

            
             *		after Discovery Identity on SOP.

            
             * @set_orientation:

            
             *		Optional; Enable setting the connector orientation

            
             *		CONFIG_STANDARD_OUTPUT (0x18) bit0.

            
             */

            
            struct tcpci_data {

            
            	struct regmap *regmap;

            
            	unsigned char TX_BUF_BYTE_x_hidden:1;

            
            	unsigned char auto_discharge_disconnect:1;

            
            	unsigned char vbus_vsafe0v:1;

            
            	unsigned char cable_comm_capable:1;

            
            	unsigned char set_orientation:1;


            	int (*init)(struct tcpci *tcpci, struct tcpci_data *data);

            
            	int (*set_vconn)(struct tcpci *tcpci, struct tcpci_data *data,

            
            			 bool enable);

            
            	int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data,

            
            				  enum typec_cc_status cc);

            
            	int (*set_vbus)(struct tcpci *tcpci, struct tcpci_data *data, bool source, bool sink);

            
            	void (*frs_sourcing_vbus)(struct tcpci *tcpci, struct tcpci_data *data);

            
            	void (*set_partner_usb_comm_capable)(struct tcpci *tcpci, struct tcpci_data *data,

            
            					     bool capable);

            
            	void (*check_contaminant)(struct tcpci *tcpci, struct tcpci_data *data);

            
            	bool (*attempt_vconn_swap_discovery)(struct tcpci *tcpci, struct tcpci_data *data);

            
            };


            struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data);

            
            void tcpci_unregister_port(struct tcpci *tcpci);

            
            irqreturn_t tcpci_irq(struct tcpci *tcpci);


            struct tcpm_port;

            
            struct tcpm_port *tcpci_get_tcpm_port(struct tcpci *tcpci);


            static inline enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink)

            
            {

            
            	switch (cc) {

            
            	case 0x1:

            
            		return sink ? TYPEC_CC_RP_DEF : TYPEC_CC_RA;

            
            	case 0x2:

            
            		return sink ? TYPEC_CC_RP_1_5 : TYPEC_CC_RD;

            
            	case 0x3:

            
            		if (sink)

            
            			return TYPEC_CC_RP_3_0;

            
            		fallthrough;

            
            	case TCPC_CC_STATE_SRC_OPEN:

            
            	default:

            
            		return TYPEC_CC_OPEN;

            
            	}

            
            }

            
            #endif /* __LINUX_USB_TCPCI_H */
	/* SPDX-License-Identifier: GPL-2.0+ */
	/*
	* Copyright 2015-2017 Google, Inc
	*
	* USB Type-C Port Controller Interface.
	*/

	#ifndef __LINUX_USB_TCPCI_H
	#define __LINUX_USB_TCPCI_H

	#include <linux/usb/typec.h>
	#include <linux/usb/tcpm.h>

	#define TCPC_VENDOR_ID 0x0
	#define TCPC_PRODUCT_ID 0x2
	#define TCPC_BCD_DEV 0x4
	#define TCPC_TC_REV 0x6
	#define TCPC_PD_REV 0x8
	#define TCPC_PD_INT_REV 0xa

	#define TCPC_ALERT 0x10
	#define TCPC_ALERT_EXTND BIT(14)
	#define TCPC_ALERT_EXTENDED_STATUS BIT(13)
	#define TCPC_ALERT_VBUS_DISCNCT BIT(11)
	#define TCPC_ALERT_RX_BUF_OVF BIT(10)
	#define TCPC_ALERT_FAULT BIT(9)
	#define TCPC_ALERT_V_ALARM_LO BIT(8)
	#define TCPC_ALERT_V_ALARM_HI BIT(7)
	#define TCPC_ALERT_TX_SUCCESS BIT(6)
	#define TCPC_ALERT_TX_DISCARDED BIT(5)
	#define TCPC_ALERT_TX_FAILED BIT(4)
	#define TCPC_ALERT_RX_HARD_RST BIT(3)
	#define TCPC_ALERT_RX_STATUS BIT(2)
	#define TCPC_ALERT_POWER_STATUS BIT(1)
	#define TCPC_ALERT_CC_STATUS BIT(0)

	#define TCPC_ALERT_MASK 0x12
	#define TCPC_POWER_STATUS_MASK 0x14

	#define TCPC_FAULT_STATUS_MASK 0x15
	#define TCPC_FAULT_STATUS_MASK_VCONN_OC BIT(1)

	#define TCPC_EXTENDED_STATUS_MASK 0x16
	#define TCPC_EXTENDED_STATUS_MASK_VSAFE0V BIT(0)

	#define TCPC_ALERT_EXTENDED_MASK 0x17
	#define TCPC_SINK_FAST_ROLE_SWAP BIT(0)

	#define TCPC_CONFIG_STD_OUTPUT 0x18
	#define TCPC_CONFIG_STD_OUTPUT_ORIENTATION_MASK BIT(0)
	#define TCPC_CONFIG_STD_OUTPUT_ORIENTATION_NORMAL 0
	#define TCPC_CONFIG_STD_OUTPUT_ORIENTATION_FLIPPED 1

	#define TCPC_TCPC_CTRL 0x19
	#define TCPC_TCPC_CTRL_ORIENTATION BIT(0)
	#define PLUG_ORNT_CC1 0
	#define PLUG_ORNT_CC2 1
	#define TCPC_TCPC_CTRL_BIST_TM BIT(1)
	#define TCPC_TCPC_CTRL_EN_LK4CONN_ALRT BIT(6)

	#define TCPC_EXTENDED_STATUS 0x20
	#define TCPC_EXTENDED_STATUS_VSAFE0V BIT(0)

	#define TCPC_ROLE_CTRL 0x1a
	#define TCPC_ROLE_CTRL_DRP BIT(6)
	#define TCPC_ROLE_CTRL_RP_VAL GENMASK(5, 4)
	#define TCPC_ROLE_CTRL_RP_VAL_DEF 0x0
	#define TCPC_ROLE_CTRL_RP_VAL_1_5 0x1
	#define TCPC_ROLE_CTRL_RP_VAL_3_0 0x2
	#define TCPC_ROLE_CTRL_CC2 GENMASK(3, 2)
	#define TCPC_ROLE_CTRL_CC1 GENMASK(1, 0)
	#define TCPC_ROLE_CTRL_CC_RA 0x0
	#define TCPC_ROLE_CTRL_CC_RP 0x1
	#define TCPC_ROLE_CTRL_CC_RD 0x2
	#define TCPC_ROLE_CTRL_CC_OPEN 0x3

	#define TCPC_FAULT_CTRL 0x1b

	#define TCPC_POWER_CTRL 0x1c
	#define TCPC_POWER_CTRL_VCONN_ENABLE BIT(0)
	#define TCPC_POWER_CTRL_BLEED_DISCHARGE BIT(3)
	#define TCPC_POWER_CTRL_AUTO_DISCHARGE BIT(4)
	#define TCPC_DIS_VOLT_ALRM BIT(5)
	#define TCPC_POWER_CTRL_VBUS_VOLT_MON BIT(6)
	#define TCPC_FAST_ROLE_SWAP_EN BIT(7)

	#define TCPC_CC_STATUS 0x1d
	#define TCPC_CC_STATUS_TOGGLING BIT(5)
	#define TCPC_CC_STATUS_TERM BIT(4)
	#define TCPC_CC_STATUS_TERM_RP 0
	#define TCPC_CC_STATUS_TERM_RD 1
	#define TCPC_CC_STATUS_CC2 GENMASK(3, 2)
	#define TCPC_CC_STATUS_CC1 GENMASK(1, 0)
	#define TCPC_CC_STATE_SRC_OPEN 0

	#define TCPC_POWER_STATUS 0x1e
	#define TCPC_POWER_STATUS_DBG_ACC_CON BIT(7)
	#define TCPC_POWER_STATUS_UNINIT BIT(6)
	#define TCPC_POWER_STATUS_SOURCING_VBUS BIT(4)
	#define TCPC_POWER_STATUS_VBUS_DET BIT(3)
	#define TCPC_POWER_STATUS_VBUS_PRES BIT(2)
	#define TCPC_POWER_STATUS_VCONN_PRES BIT(1)
	#define TCPC_POWER_STATUS_SINKING_VBUS BIT(0)

	#define TCPC_FAULT_STATUS 0x1f
	#define TCPC_FAULT_STATUS_ALL_REG_RST_TO_DEFAULT BIT(7)
	#define TCPC_FAULT_STATUS_VCONN_OC BIT(1)

	#define TCPC_ALERT_EXTENDED 0x21

	#define TCPC_COMMAND 0x23
	#define TCPC_CMD_WAKE_I2C 0x11
	#define TCPC_CMD_DISABLE_VBUS_DETECT 0x22
	#define TCPC_CMD_ENABLE_VBUS_DETECT 0x33
	#define TCPC_CMD_DISABLE_SINK_VBUS 0x44
	#define TCPC_CMD_SINK_VBUS 0x55
	#define TCPC_CMD_DISABLE_SRC_VBUS 0x66
	#define TCPC_CMD_SRC_VBUS_DEFAULT 0x77
	#define TCPC_CMD_SRC_VBUS_HIGH 0x88
	#define TCPC_CMD_LOOK4CONNECTION 0x99
	#define TCPC_CMD_RXONEMORE 0xAA
	#define TCPC_CMD_I2C_IDLE 0xFF

	#define TCPC_DEV_CAP_1 0x24
	#define TCPC_DEV_CAP_2 0x26
	#define TCPC_STD_INPUT_CAP 0x28
	#define TCPC_STD_OUTPUT_CAP 0x29
	#define TCPC_STD_OUTPUT_CAP_ORIENTATION BIT(0)

	#define TCPC_MSG_HDR_INFO 0x2e
	#define TCPC_MSG_HDR_INFO_DATA_ROLE BIT(3)
	#define TCPC_MSG_HDR_INFO_REV GENMASK(2, 1)
	#define TCPC_MSG_HDR_INFO_PWR_ROLE BIT(0)

	#define TCPC_RX_DETECT 0x2f
	#define TCPC_RX_DETECT_HARD_RESET BIT(5)
	#define TCPC_RX_DETECT_SOP BIT(0)
	#define TCPC_RX_DETECT_SOP1 BIT(1)
	#define TCPC_RX_DETECT_SOP2 BIT(2)
	#define TCPC_RX_DETECT_DBG1 BIT(3)
	#define TCPC_RX_DETECT_DBG2 BIT(4)

	#define TCPC_RX_BYTE_CNT 0x30
	#define TCPC_RX_BUF_FRAME_TYPE 0x31
	#define TCPC_RX_BUF_FRAME_TYPE_SOP 0
	#define TCPC_RX_BUF_FRAME_TYPE_SOP1 1
	#define TCPC_RX_BUF_FRAME_TYPE_MASK GENMASK(2, 0)
	#define TCPC_RX_HDR 0x32
	#define TCPC_RX_DATA 0x34 /* through 0x4f */

	#define TCPC_TRANSMIT 0x50
	#define TCPC_TRANSMIT_RETRY GENMASK(5, 4)
	#define TCPC_TRANSMIT_TYPE GENMASK(2, 0)

	#define TCPC_TX_BYTE_CNT 0x51
	#define TCPC_TX_HDR 0x52
	#define TCPC_TX_DATA 0x54 /* through 0x6f */

	#define TCPC_VBUS_VOLTAGE 0x70
	#define TCPC_VBUS_VOLTAGE_MASK 0x3ff
	#define TCPC_VBUS_VOLTAGE_LSB_MV 25
	#define TCPC_VBUS_SINK_DISCONNECT_THRESH 0x72
	#define TCPC_VBUS_SINK_DISCONNECT_THRESH_LSB_MV 25
	#define TCPC_VBUS_SINK_DISCONNECT_THRESH_MAX 0x3ff
	#define TCPC_VBUS_STOP_DISCHARGE_THRESH 0x74
	#define TCPC_VBUS_VOLTAGE_ALARM_HI_CFG 0x76
	#define TCPC_VBUS_VOLTAGE_ALARM_LO_CFG 0x78

	/* I2C_WRITE_BYTE_COUNT + 1 when TX_BUF_BYTE_x is only accessible I2C_WRITE_BYTE_COUNT */
	#define TCPC_TRANSMIT_BUFFER_MAX_LEN 31

	#define tcpc_presenting_rd(reg, cc) \
	(!(TCPC_ROLE_CTRL_DRP & (reg)) && \
	FIELD_GET(TCPC_ROLE_CTRL_## cc, reg) == TCPC_ROLE_CTRL_CC_RD)

	struct tcpci;

	/*
	* @TX_BUF_BYTE_x_hidden:
	* optional; Set when TX_BUF_BYTE_x can only be accessed through I2C_WRITE_BYTE_COUNT.
	* @frs_sourcing_vbus:
	* Optional; Callback to perform chip specific operations when FRS
	* is sourcing vbus.
	* @auto_discharge_disconnect:
	* Optional; Enables TCPC to autonomously discharge vbus on disconnect.
	* @vbus_vsafe0v:
	* optional; Set when TCPC can detect whether vbus is at VSAFE0V.
	* @set_partner_usb_comm_capable:
	* Optional; The USB Communications Capable bit indicates if port
	* partner is capable of communication over the USB data lines
	* (e.g. D+/- or SS Tx/Rx). Called to notify the status of the bit.
	* @check_contaminant:
	* Optional; The callback is invoked when chiplevel drivers indicated
	* that the USB port needs to be checked for contaminant presence.
	* Chip level drivers are expected to check for contaminant and call
	* tcpm_clean_port when the port is clean to put the port back into
	* toggling state.
	* @cable_comm_capable
	* optional; Set when TCPC can communicate with cable plugs over SOP'
	* @attempt_vconn_swap_discovery:
	* Optional; The callback is called by the TCPM when the result of
	* a Discover Identity request indicates that the port partner is
	* a receptacle capable of modal operation. Chip level TCPCI drivers
	* can implement their own policy to determine if and when a Vconn
	* swap following Discover Identity on SOP' occurs.
	* Return true when the TCPM is allowed to request a Vconn swap
	* after Discovery Identity on SOP.
	* @set_orientation:
	* Optional; Enable setting the connector orientation
	* CONFIG_STANDARD_OUTPUT (0x18) bit0.
	*/
	struct tcpci_data {
	struct regmap *regmap;
	unsigned char TX_BUF_BYTE_x_hidden:1;
	unsigned char auto_discharge_disconnect:1;
	unsigned char vbus_vsafe0v:1;
	unsigned char cable_comm_capable:1;
	unsigned char set_orientation:1;

	int (init)(struct tcpci tcpci, struct tcpci_data *data);
	int (set_vconn)(struct tcpci tcpci, struct tcpci_data *data,
	bool enable);
	int (start_drp_toggling)(struct tcpci tcpci, struct tcpci_data *data,
	enum typec_cc_status cc);
	int (set_vbus)(struct tcpci tcpci, struct tcpci_data *data, bool source, bool sink);
	void (frs_sourcing_vbus)(struct tcpci tcpci, struct tcpci_data *data);
	void (set_partner_usb_comm_capable)(struct tcpci tcpci, struct tcpci_data *data,
	bool capable);
	void (check_contaminant)(struct tcpci tcpci, struct tcpci_data *data);
	bool (attempt_vconn_swap_discovery)(struct tcpci tcpci, struct tcpci_data *data);
	};

	struct tcpci tcpci_register_port(struct device dev, struct tcpci_data *data);
	void tcpci_unregister_port(struct tcpci *tcpci);
	irqreturn_t tcpci_irq(struct tcpci *tcpci);

	struct tcpm_port;
	struct tcpm_port tcpci_get_tcpm_port(struct tcpci tcpci);

	static inline enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink)
	{
	switch (cc) {
	case 0x1:
	return sink ? TYPEC_CC_RP_DEF : TYPEC_CC_RA;
	case 0x2:
	return sink ? TYPEC_CC_RP_1_5 : TYPEC_CC_RD;
	case 0x3:
	if (sink)
	return TYPEC_CC_RP_3_0;
	fallthrough;
	case TCPC_CC_STATE_SRC_OPEN:
	default:
	return TYPEC_CC_OPEN;
	}
	}
	#endif /* __LINUX_USB_TCPCI_H */