platform/chrome: cros_ec_typec: Report SOP' PD revision from status

cros_typec_handle_sop_prime_disc now takes the PD revision provided
by the EC_CMD_TYPEC_STATUS command response for the SOP'.

Attach the properly formatted pd_revision to the cable desc before
registering the cable.
Signed-off-by: Benson Leung <bleung@chromium.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Prashant Malani <pmalani@chromium.org>
Link: https://lore.kernel.org/r/20210129061406.2680146-5-bleung@chromium.orgSigned-off-by: Benson Leung <bleung@chromium.org>

drivers/platform/chrome/cros_ec_typec.c

@@ -748,7 +748,7 @@ static void cros_typec_parse_pd_identity(struct usb_pd_identity *id,
 		id->vdo[i - 3] = disc->discovery_vdo[i];
 }
 
-static int cros_typec_handle_sop_prime_disc(struct cros_typec_data *typec, int port_num)
+static int cros_typec_handle_sop_prime_disc(struct cros_typec_data *typec, int port_num, u16 pd_revision)
 {
 	struct cros_typec_port *port = typec->ports[port_num];
 	struct ec_response_typec_discovery *disc = port->disc_data;
@@ -794,6 +794,7 @@ static int cros_typec_handle_sop_prime_disc(struct cros_typec_data *typec, int p
 	}
 
 	c_desc.identity = &port->c_identity;
+	c_desc.pd_revision = pd_revision;
 
 	port->cable = typec_register_cable(port->port, &c_desc);
 	if (IS_ERR(port->cable)) {
@@ -893,7 +894,11 @@ static void cros_typec_handle_status(struct cros_typec_data *typec, int port_num
 
 	if (resp.events & PD_STATUS_EVENT_SOP_PRIME_DISC_DONE &&
 	    !typec->ports[port_num]->sop_prime_disc_done) {
-		ret = cros_typec_handle_sop_prime_disc(typec, port_num);
+		u16 sop_prime_revision;
+
+		/* Convert BCD to the format preferred by the TypeC framework */
+		sop_prime_revision = (le16_to_cpu(resp.sop_prime_revision) & 0xff00) >> 4;
+		ret = cros_typec_handle_sop_prime_disc(typec, port_num, sop_prime_revision);
 		if (ret < 0)
 			dev_err(typec->dev, "Couldn't parse SOP' Disc data, port: %d\n", port_num);
 		else