Commit a30a00e3 authored Oct 28, 2020 by Badhri Jagan Sridharan Committed by Greg Kroah-Hartman Nov 18, 2020

usb: typec: tcpm: frs sourcing vbus callback



During FRS hardware autonomously starts to source vbus. Provide
callback to perform chip specific operations.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20201029063138.1429760-5-badhri@google.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 8115240c

drivers/usb/typec/tcpm/tcpm.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -4091,7 +4091,16 @@ static void _tcpm_pd_vbus_on(struct tcpm_port *port)
		case SRC_TRY_DEBOUNCE:
		/* Do nothing, waiting for sink detection */
		break;
		case FR_SWAP_SEND:
		case FR_SWAP_SEND_TIMEOUT:
		case FR_SWAP_SNK_SRC_TRANSITION_TO_OFF:
		case FR_SWAP_SNK_SRC_SOURCE_VBUS_APPLIED:
		if (port->tcpc->frs_sourcing_vbus)
		port->tcpc->frs_sourcing_vbus(port->tcpc);
		break;
		case FR_SWAP_SNK_SRC_NEW_SINK_READY:
		if (port->tcpc->frs_sourcing_vbus)
		port->tcpc->frs_sourcing_vbus(port->tcpc);
		tcpm_set_state(port, FR_SWAP_SNK_SRC_SOURCE_VBUS_APPLIED, 0);
		break;

include/linux/usb/tcpm.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -83,6 +83,9 @@ 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.
		*/
		struct tcpc_dev {
		struct fwnode_handle *fwnode;
		@@ -109,6 +112,7 @@ struct tcpc_dev {
		const struct pd_message *msg);
		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);
		};

		struct tcpm_port;