According to the PMC Type C Subsystem (TCSS) Mux programming guide rev
0.6, when a device is transitioning to DP Alternate Mode state, if the
HPD_LVL in the status update command VDO is set, the HPD_HIGH field in
the Alternate Mode request “mode_data” field (bit 14) should also be
set. Ensure the bit is correctly handled while issuing the Alternate
Mode request.

Signed-off-by: Prashant Malani <pmal...@chromium.org>
Fixes: 6701adfa9693 ("usb: typec: driver for Intel PMC mux control")
---
 drivers/usb/typec/mux/intel_pmc_mux.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/typec/mux/intel_pmc_mux.c 
b/drivers/usb/typec/mux/intel_pmc_mux.c
index f5c5e0aef66f..c599112559e7 100644
--- a/drivers/usb/typec/mux/intel_pmc_mux.c
+++ b/drivers/usb/typec/mux/intel_pmc_mux.c
@@ -157,6 +157,10 @@ 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 (data->status & DP_STATUS_HPD_STATE)
+               req.mode_data |= PMC_USB_DP_HPD_LVL <<
+                                PMC_USB_ALTMODE_DP_MODE_SHIFT;
+
        return pmc_usb_command(port, (void *)&req, sizeof(req));
 }
 
-- 
2.26.2.303.gf8c07b1a785-goog

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