Commit 6c29de68 authored by Utkarsh Patel's avatar Utkarsh Patel Committed by Greg Kroah-Hartman
Browse files

usb: typec: intel_pmc_mux: Configure Displayport Alternate mode 2.1 



Mux agent driver can configure cable details such as cable type and
cable speed received as a part of displayport configuration to support
Displayport Alternate mode 2.1.

Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: default avatarUtkarsh Patel <utkarsh.h.patel@intel.com>
Link: https://lore.kernel.org/r/20230920023243.2494410-6-utkarsh.h.patel@intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 70ca6c73

drivers/usb/typec/mux/intel_pmc_mux.c

+24 −0
Original line number Diff line number Diff line
@@ -191,6 +191,12 @@ static int hsl_orientation(struct pmc_usb_port *port) 
	return port->orientation - 1;

}



static bool is_pmc_mux_tbt(struct acpi_device *adev)

{

	return acpi_dev_hid_uid_match(adev, "INTC1072", NULL) ||

	       acpi_dev_hid_uid_match(adev, "INTC1079", NULL);

}



static int pmc_usb_send_command(struct intel_scu_ipc_dev *ipc, u8 *msg, u32 len)

{

	u8 response[4];
@@ -293,6 +299,24 @@ pmc_usb_mux_dp(struct pmc_usb_port *port, struct typec_mux_state *state) 
	req.mode_data |= (state->mode - TYPEC_STATE_MODAL) <<

			 PMC_USB_ALTMODE_DP_MODE_SHIFT;



	if (!is_pmc_mux_tbt(port->pmc->iom_adev)) {

		u8 cable_speed = (data->conf & DP_CONF_SIGNALLING_MASK) >>

				  DP_CONF_SIGNALLING_SHIFT;



		u8 cable_type = (data->conf & DP_CONF_CABLE_TYPE_MASK) >>

				 DP_CONF_CABLE_TYPE_SHIFT;



		req.mode_data |= PMC_USB_ALTMODE_CABLE_SPD(cable_speed);



		if (cable_type == DP_CONF_CABLE_TYPE_OPTICAL)

			req.mode_data |= PMC_USB_ALTMODE_CABLE_TYPE;

		else if (cable_type == DP_CONF_CABLE_TYPE_RE_TIMER)

			req.mode_data |= PMC_USB_ALTMODE_ACTIVE_CABLE |

					 PMC_USB_ALTMODE_RETIMER_CABLE;

		else if (cable_type == DP_CONF_CABLE_TYPE_RE_DRIVER)

			req.mode_data |= PMC_USB_ALTMODE_ACTIVE_CABLE;

	}



	ret = pmc_usb_command(port, (void *)&req, sizeof(req));

	if (ret)

		return ret;