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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/usb/tcpm.h
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * Copyright 2015-2017 Google, Inc
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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 #ifndef __LINUX_USB_TCPM_H
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  *		For example, some tcpcs may include BC1.2 charger detection
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  *		and use that in this case.
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  * @set_cc:	Called to set value of CC pins
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+ * @apply_rc:	Optional; Needed to move TCPCI based chipset to APPLY_RC state
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+ *		as stated by the TCPCI specification.
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  * @get_cc:	Called to read current CC pin values
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  * @set_polarity:
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  *		Called to set polarity
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  *		automatically if a connection is established.
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  * @try_role:	Optional; called to set a preferred role
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  * @pd_transmit:Called to transmit PD message
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+ * @set_bist_data: Turn on/off bist data mode for compliance testing
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  * @enable_frs:
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  *		Optional; Called to enable/disable PD 3.0 fast role swap.
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  *		Enabling frs is accessory dependent as not all PD3.0
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  *		accessories support fast role swap.
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+ * @frs_sourcing_vbus:
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+ *		Optional; Called to notify that vbus is now being sourced.
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+ *		Low level drivers can perform chip specific operations, if any.
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+ * @enable_auto_vbus_discharge:
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+ *		Optional; TCPCI spec based TCPC implementations can optionally
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+ *		support hardware to autonomously dischrge vbus upon disconnecting
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+ *		as sink or source. TCPM signals TCPC to enable the mechanism upon
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+ *		entering connected state and signals disabling upon disconnect.
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+ * @set_auto_vbus_discharge_threshold:
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+ *		Mandatory when enable_auto_vbus_discharge is implemented. TCPM
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+ *		calls this function to allow lower levels drivers to program the
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+ *		vbus threshold voltage below which the vbus discharge circuit
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+ *		will be turned on. requested_vbus_voltage is set to 0 when vbus
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+ *		is going to disappear knowingly i.e. during PR_SWAP and
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+ *		HARD_RESET etc.
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+ * @is_vbus_vsafe0v:
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+ *		Optional; TCPCI spec based TCPC implementations are expected to
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+ *		detect VSAFE0V voltage level at vbus. When detection of VSAFE0V
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+ *		is supported by TCPC, set this callback for TCPM to query
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+ *		whether vbus is at VSAFE0V when needed.
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+ *		Returns true when vbus is at VSAFE0V, false otherwise.
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+ * @set_partner_usb_comm_capable:
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+ *              Optional; The USB Communications Capable bit indicates if port
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+ *              partner is capable of communication over the USB data lines
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+ *              (e.g. D+/- or SS Tx/Rx). Called to notify the status of the bit.
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+ * @check_contaminant:
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+ *		Optional; The callback is called when CC pins report open status
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+ *		at the end of the toggling period. Chip level drivers are
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+ *		expected to check for contaminant and re-enable toggling if
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+ *		needed. When 0 is not returned, check_contaminant is expected to
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+ *		restart toggling after checking the connector for contaminant.
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+ *		This forces the TCPM state machine to tranistion to TOGGLING state
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+ *		without calling start_toggling callback.
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  */
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 struct tcpc_dev {
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 	struct fwnode_handle *fwnode;
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 	int (*get_vbus)(struct tcpc_dev *dev);
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 	int (*get_current_limit)(struct tcpc_dev *dev);
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 	int (*set_cc)(struct tcpc_dev *dev, enum typec_cc_status cc);
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+	int (*apply_rc)(struct tcpc_dev *dev, enum typec_cc_status cc,
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+			enum typec_cc_polarity polarity);
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 	int (*get_cc)(struct tcpc_dev *dev, enum typec_cc_status *cc1,
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 		      enum typec_cc_status *cc2);
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 	int (*set_polarity)(struct tcpc_dev *dev,
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 			      enum typec_cc_status cc);
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 	int (*try_role)(struct tcpc_dev *dev, int role);
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 	int (*pd_transmit)(struct tcpc_dev *dev, enum tcpm_transmit_type type,
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-			   const struct pd_message *msg);
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+			   const struct pd_message *msg, unsigned int negotiated_rev);
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+	int (*set_bist_data)(struct tcpc_dev *dev, bool on);
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 	int (*enable_frs)(struct tcpc_dev *dev, bool enable);
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+	void (*frs_sourcing_vbus)(struct tcpc_dev *dev);
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+	int (*enable_auto_vbus_discharge)(struct tcpc_dev *dev, bool enable);
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+	int (*set_auto_vbus_discharge_threshold)(struct tcpc_dev *dev, enum typec_pwr_opmode mode,
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+						 bool pps_active, u32 requested_vbus_voltage);
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+	int (*check_contaminant)(struct tcpc_dev *dev);
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+	bool (*is_vbus_vsafe0v)(struct tcpc_dev *dev);
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+	void (*set_partner_usb_comm_capable)(struct tcpc_dev *dev, bool enable);
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 };
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 struct tcpm_port;
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 struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc);
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 void tcpm_unregister_port(struct tcpm_port *port);
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-int tcpm_update_source_capabilities(struct tcpm_port *port, const u32 *pdo,
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-				    unsigned int nr_pdo);
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 int tcpm_update_sink_capabilities(struct tcpm_port *port, const u32 *pdo,
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 				  unsigned int nr_pdo,
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 				  unsigned int operating_snk_mw);
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 			       enum tcpm_transmit_status status);
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 void tcpm_pd_hard_reset(struct tcpm_port *port);
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 void tcpm_tcpc_reset(struct tcpm_port *port);
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+bool tcpm_is_debouncing(struct tcpm_port *tcpm);
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+bool tcpm_is_toggling(struct tcpm_port *port);
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 #endif /* __LINUX_USB_TCPM_H */