diff options
Diffstat (limited to 'include/linux/usb/tcpm.h')
| -rw-r--r-- | include/linux/usb/tcpm.h | 69 |
1 files changed, 67 insertions, 2 deletions
diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h index 09762d26fa0c..b22e659f81ba 100644 --- a/include/linux/usb/tcpm.h +++ b/include/linux/usb/tcpm.h @@ -19,6 +19,10 @@ enum typec_cc_status { TYPEC_CC_RP_3_0, }; +/* Collision Avoidance */ +#define SINK_TX_NG TYPEC_CC_RP_1_5 +#define SINK_TX_OK TYPEC_CC_RP_3_0 + enum typec_cc_polarity { TYPEC_POLARITY_CC1, TYPEC_POLARITY_CC2, @@ -62,6 +66,8 @@ enum tcpm_transmit_type { * For example, some tcpcs may include BC1.2 charger detection * and use that in this case. * @set_cc: Called to set value of CC pins + * @apply_rc: Optional; Needed to move TCPCI based chipset to APPLY_RC state + * as stated by the TCPCI specification. * @get_cc: Called to read current CC pin values * @set_polarity: * Called to set polarity @@ -83,6 +89,47 @@ enum tcpm_transmit_type { * Optional; Called to enable/disable PD 3.0 fast role swap. * Enabling frs is accessory dependent as not all PD3.0 * accessories support fast role swap. + * @frs_sourcing_vbus: + * Optional; Called to notify that vbus is now being sourced. + * Low level drivers can perform chip specific operations, if any. + * @enable_auto_vbus_discharge: + * Optional; TCPCI spec based TCPC implementations can optionally + * support hardware to autonomously dischrge vbus upon disconnecting + * as sink or source. TCPM signals TCPC to enable the mechanism upon + * entering connected state and signals disabling upon disconnect. + * @set_auto_vbus_discharge_threshold: + * Mandatory when enable_auto_vbus_discharge is implemented. TCPM + * calls this function to allow lower levels drivers to program the + * vbus threshold voltage below which the vbus discharge circuit + * will be turned on. requested_vbus_voltage is set to 0 when vbus + * is going to disappear knowingly i.e. during PR_SWAP and + * HARD_RESET etc. + * @is_vbus_vsafe0v: + * Optional; TCPCI spec based TCPC implementations are expected to + * detect VSAFE0V voltage level at vbus. When detection of VSAFE0V + * is supported by TCPC, set this callback for TCPM to query + * whether vbus is at VSAFE0V when needed. + * Returns true when vbus is at VSAFE0V, false otherwise. + * @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 called when CC pins report open status + * at the end of the deboumce period or when the port is still + * toggling. Chip level drivers are expected to check for contaminant + * and call tcpm_clean_port when the port is clean. + * @cable_comm_capable + * Optional; Returns whether cable communication over SOP' is supported + * by the tcpc + * @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. */ struct tcpc_dev { struct fwnode_handle *fwnode; @@ -91,10 +138,14 @@ struct tcpc_dev { int (*get_vbus)(struct tcpc_dev *dev); int (*get_current_limit)(struct tcpc_dev *dev); int (*set_cc)(struct tcpc_dev *dev, enum typec_cc_status cc); + int (*apply_rc)(struct tcpc_dev *dev, enum typec_cc_status cc, + enum typec_cc_polarity polarity); int (*get_cc)(struct tcpc_dev *dev, enum typec_cc_status *cc1, enum typec_cc_status *cc2); int (*set_polarity)(struct tcpc_dev *dev, enum typec_cc_polarity polarity); + int (*set_orientation)(struct tcpc_dev *dev, + enum typec_orientation orientation); int (*set_vconn)(struct tcpc_dev *dev, bool on); int (*set_vbus)(struct tcpc_dev *dev, bool on, bool charge); int (*set_current_limit)(struct tcpc_dev *dev, u32 max_ma, u32 mv); @@ -106,9 +157,19 @@ struct tcpc_dev { enum typec_cc_status cc); int (*try_role)(struct tcpc_dev *dev, int role); int (*pd_transmit)(struct tcpc_dev *dev, enum tcpm_transmit_type type, - const struct pd_message *msg); + const struct pd_message *msg, unsigned int negotiated_rev); int (*set_bist_data)(struct tcpc_dev *dev, bool on); int (*enable_frs)(struct tcpc_dev *dev, bool enable); + void (*frs_sourcing_vbus)(struct tcpc_dev *dev); + int (*enable_auto_vbus_discharge)(struct tcpc_dev *dev, bool enable); + int (*set_auto_vbus_discharge_threshold)(struct tcpc_dev *dev, enum typec_pwr_opmode mode, + bool pps_active, u32 requested_vbus_voltage, + u32 pps_apdo_min_voltage); + bool (*is_vbus_vsafe0v)(struct tcpc_dev *dev); + void (*set_partner_usb_comm_capable)(struct tcpc_dev *dev, bool enable); + void (*check_contaminant)(struct tcpc_dev *dev); + bool (*cable_comm_capable)(struct tcpc_dev *dev); + bool (*attempt_vconn_swap_discovery)(struct tcpc_dev *dev); }; struct tcpm_port; @@ -121,10 +182,14 @@ void tcpm_cc_change(struct tcpm_port *port); void tcpm_sink_frs(struct tcpm_port *port); void tcpm_sourcing_vbus(struct tcpm_port *port); void tcpm_pd_receive(struct tcpm_port *port, - const struct pd_message *msg); + const struct pd_message *msg, + enum tcpm_transmit_type rx_sop_type); void tcpm_pd_transmit_complete(struct tcpm_port *port, enum tcpm_transmit_status status); void tcpm_pd_hard_reset(struct tcpm_port *port); void tcpm_tcpc_reset(struct tcpm_port *port); +void tcpm_port_clean(struct tcpm_port *port); +bool tcpm_port_is_toggling(struct tcpm_port *port); +void tcpm_port_error_recovery(struct tcpm_port *port); #endif /* __LINUX_USB_TCPM_H */ |