diff options
Diffstat (limited to 'include/usbc_ppc.h')
| -rw-r--r-- | include/usbc_ppc.h | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/include/usbc_ppc.h b/include/usbc_ppc.h index 00a2911363..fbff51b596 100644 --- a/include/usbc_ppc.h +++ b/include/usbc_ppc.h @@ -23,6 +23,13 @@ */ #define PPC_OC_COOLDOWN_DELAY_US (2 * SECOND) +/* The role of connected device. */ +enum ppc_device_role { + PPC_DEV_SNK, + PPC_DEV_SRC, + PPC_DEV_DISCONNECTED, +}; + /* * NOTE: The pointers to functions in the ppc_drv structure can now be NULL * which will indicate and return NOT_IMPLEMENTED from the main calling @@ -94,6 +101,17 @@ struct ppc_drv { */ int (*discharge_vbus)(int port, int enable); + /** + * Inform the PPC of the device is connected or disconnected. + * + * @param port: The Type-C port number. + * @param dev: PPC_DEV_SNK if a sink is connected, PPC_DEV_SRC if a + * source is connected, PPC_DEV_DISCONNECTED if the device + * is disconnected. + * @return EC_SUCCESS on success, error otherwise. + */ + int (*dev_is_connected)(int port, enum ppc_device_role dev); + #ifdef CONFIG_USBC_PPC_SBU /** * Turn on/off the SBU FETs. @@ -239,15 +257,15 @@ int ppc_is_sourcing_vbus(int port); int ppc_is_vbus_present(int port); /** - * Inform the PPC module that a sink is connected. + * Inform the PPC module that a device (either sink or source) is connected. * - * This is used such that it can determine when to clear the overcurrent events - * counter for a port. + * This is used such that it can determine when to clear the overcurrent events, + * and disable discharge VBUS on a source device connected. * @param port: The Type-C port number. - * @param is_connected: 1: if sink is connected on this port, 0: if not - * connected. + * @param dev: PPC_DEV_SNK if a sink is connected, PPC_DEV_SRC if a source is + * connected, PPC_DEV_DISCONNECTED if the device is disconnected. */ -void ppc_sink_is_connected(int port, int is_connected); +int ppc_dev_is_connected(int port, enum ppc_device_role dev); /** * Inform the PPC of the polarity of the CC pins. |