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usb: typec: tcpm: Support bist test data mode for compliance

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TCPM supports BIST carried mode. PD compliance tests require
BIST Test Data to be supported as well.

Introducing set_bist_data callback to signal tcpc driver for
configuring the port controller hardware to enable/disable
BIST Test Data mode.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200716034128.1251728-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Badhri Jagan Sridharan
2020-07-15 20:41:26 -07:00
committed by Greg Kroah-Hartman
parent d25d61be6b
commit b2dcfefc43
2 changed files with 13 additions and 0 deletions
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11
drivers/usb/typec/tcpm/tcpm.c
View File

@@ -2748,6 +2748,11 @@ static void tcpm_detach(struct tcpm_port *port)
if (!port->attached) if (!port->attached)
return; return;
if (port->tcpc->set_bist_data) {
tcpm_log(port, "disable BIST MODE TESTDATA");
port->tcpc->set_bist_data(port->tcpc, false);
}
if (tcpm_port_is_disconnected(port)) if (tcpm_port_is_disconnected(port))
port->hard_reset_count = 0; port->hard_reset_count = 0;
@@ -3557,6 +3562,12 @@ static void run_state_machine(struct tcpm_port *port)
case BDO_MODE_CARRIER2: case BDO_MODE_CARRIER2:
tcpm_pd_transmit(port, TCPC_TX_BIST_MODE_2, NULL); tcpm_pd_transmit(port, TCPC_TX_BIST_MODE_2, NULL);
break; break;
case BDO_MODE_TESTDATA:
if (port->tcpc->set_bist_data) {
tcpm_log(port, "Enable BIST MODE TESTDATA");
port->tcpc->set_bist_data(port->tcpc, true);
}
break;
default: default:
break; break;
} }

2
include/linux/usb/tcpm.h
View File

@@ -79,6 +79,7 @@ enum tcpm_transmit_type {
* @try_role: Optional; called to set a preferred role * @try_role: Optional; called to set a preferred role
* @pd_transmit:Called to transmit PD message * @pd_transmit:Called to transmit PD message
* @mux: Pointer to multiplexer data * @mux: Pointer to multiplexer data
* @set_bist_data: Turn on/off bist data mode for compliance testing
*/ */
struct tcpc_dev { struct tcpc_dev {
struct fwnode_handle *fwnode; struct fwnode_handle *fwnode;
@@ -103,6 +104,7 @@ struct tcpc_dev {
int (*try_role)(struct tcpc_dev *dev, int role); int (*try_role)(struct tcpc_dev *dev, int role);
int (*pd_transmit)(struct tcpc_dev *dev, enum tcpm_transmit_type type, int (*pd_transmit)(struct tcpc_dev *dev, enum tcpm_transmit_type type,
const struct pd_message *msg); const struct pd_message *msg);
int (*set_bist_data)(struct tcpc_dev *dev, bool on);
}; };
struct tcpm_port; struct tcpm_port;