Commit dcf10187 authored by Imre Deak's avatar Imre Deak
Browse files

drm/i915/tc: Debug print the pin assignment and max lane count 



Debug print the TypeC pin assignment and max lane count value during HW
readout and after resetting the TypeC mode.

Reviewed-by: default avatarMika Kahola <mika.kahola@intel.com>
Link: https://lore.kernel.org/r/20250805073700.642107-20-imre.deak@intel.com


Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
parent 24d1cdac

drivers/gpu/drm/i915/display/intel_tc.c

+17 −4
Original line number Diff line number Diff line
@@ -277,6 +277,14 @@ static u32 get_lane_mask(struct intel_tc_port *tc) 
	return lane_mask >> DP_LANE_ASSIGNMENT_SHIFT(tc->phy_fia_idx);

}



static char pin_assignment_name(enum intel_tc_pin_assignment pin_assignment)

{

	if (pin_assignment == INTEL_TC_PIN_ASSIGNMENT_NONE)

		return '-';



	return 'A' + pin_assignment - INTEL_TC_PIN_ASSIGNMENT_A;

}



static enum intel_tc_pin_assignment

get_pin_assignment(struct intel_tc_port *tc)

{
@@ -1510,10 +1518,13 @@ static void intel_tc_port_reset_mode(struct intel_tc_port *tc, 
	if (!force_disconnect)

		tc_phy_connect(tc, required_lanes);



	drm_dbg_kms(display->drm, "Port %s: TC port mode reset (%s -> %s)\n",

	drm_dbg_kms(display->drm,

		    "Port %s: TC port mode reset (%s -> %s) pin assignment: %c max lanes: %d\n",

		    tc->port_name,

		    tc_port_mode_name(old_tc_mode),

		    tc_port_mode_name(tc->mode));

		    tc_port_mode_name(tc->mode),

		    pin_assignment_name(tc->pin_assignment),

		    tc->max_lane_count);

}



static bool intel_tc_port_needs_reset(struct intel_tc_port *tc)
@@ -1668,9 +1679,11 @@ void intel_tc_port_sanitize_mode(struct intel_digital_port *dig_port, 
		__intel_tc_port_put_link(tc);

	}



	drm_dbg_kms(display->drm, "Port %s: sanitize mode (%s)\n",

	drm_dbg_kms(display->drm, "Port %s: sanitize mode (%s) pin assignment: %c max lanes: %d\n",

		    tc->port_name,

		    tc_port_mode_name(tc->mode));

		    tc_port_mode_name(tc->mode),

		    pin_assignment_name(tc->pin_assignment),

		    tc->max_lane_count);



	mutex_unlock(&tc->lock);

}