usb: typec: intel_pmc_mux: Configure Thunderbolt cable generation bits

Thunderbolt cable generation bits received as a part of Thunderbolt 3 cable
discover mode VDO needs to be configured for Thunderbolt rounded and
non-rounded cable support in the Thunderbolt alternate mode.

Signed-off-by: Utkarsh Patel <utkarsh.h.patel@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
--
Changes in v2:
- No change.
--
Link: https://lore.kernel.org/r/20201113202503.6559-4-utkarsh.h.patel@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/typec/mux/intel_pmc_mux.c

@@ -256,6 +256,7 @@ static int
 pmc_usb_mux_tbt(struct pmc_usb_port *port, struct typec_mux_state *state)
 {
 	struct typec_thunderbolt_data *data = state->data;
+	u8 cable_rounded = TBT_CABLE_ROUNDED_SUPPORT(data->cable_mode);
 	u8 cable_speed = TBT_CABLE_SPEED(data->cable_mode);
 	struct altmode_req req = { };
 
@@ -284,6 +285,8 @@ pmc_usb_mux_tbt(struct pmc_usb_port *port, struct typec_mux_state *state)
 
 	req.mode_data |= PMC_USB_ALTMODE_CABLE_SPD(cable_speed);
 
+	req.mode_data |= PMC_USB_ALTMODE_TBT_GEN(cable_rounded);
+
 	return pmc_usb_command(port, (void *)&req, sizeof(req));
 }