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usb: typec: intel_pmc_mux: Configure Displayport Alternate mode 2.1

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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: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Utkarsh Patel <utkarsh.h.patel@intel.com>
Link: https://lore.kernel.org/r/20230920023243.2494410-6-utkarsh.h.patel@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Utkarsh Patel 2023-09-19 19:32:43 -07:00 committed by Greg Kroah-Hartman
parent 70ca6c7312
commit 6c29de68fb
1 changed files with 24 additions and 0 deletions
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24
drivers/usb/typec/mux/intel_pmc_mux.c
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@ -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;