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Commit 12a47a42 authored by Imre Deak's avatar Imre Deak
Browse files

drm/i915/dp: Read DP descriptor for eDP and LSPCON too 



As for external DP sink and branch devices read and print the DP
descriptor for eDP and LSPCON devices as well to aid debugging.

v2:
- Split out this change to a separate patch. (Jani)

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1477326811-30431-7-git-send-email-imre.deak@intel.com
parent 24e807e7

drivers/gpu/drm/i915/intel_dp.c

+3 −1
Original line number Diff line number Diff line
@@ -1461,7 +1461,7 @@ __intel_dp_read_desc(struct intel_dp *intel_dp, struct intel_dp_desc *desc) 
	       sizeof(*desc);

}



static bool intel_dp_read_desc(struct intel_dp *intel_dp)

bool intel_dp_read_desc(struct intel_dp *intel_dp)

{

	struct intel_dp_desc *desc = &intel_dp->desc;

	bool oui_sup = intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] &
@@ -3521,6 +3521,8 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp) 
	if (!intel_dp_read_dpcd(intel_dp))

		return false;



	intel_dp_read_desc(intel_dp);



	if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11)

		dev_priv->no_aux_handshake = intel_dp->dpcd[DP_MAX_DOWNSPREAD] &

			DP_NO_AUX_HANDSHAKE_LINK_TRAINING;

drivers/gpu/drm/i915/intel_drv.h

+1 −0
Original line number Diff line number Diff line
@@ -1468,6 +1468,7 @@ static inline unsigned int intel_dp_unused_lane_mask(int lane_count) 
}



bool intel_dp_read_dpcd(struct intel_dp *intel_dp);

bool intel_dp_read_desc(struct intel_dp *intel_dp);



/* intel_dp_aux_backlight.c */

int intel_dp_aux_init_backlight_funcs(struct intel_connector *intel_connector);

drivers/gpu/drm/i915/intel_lspcon.c

+2 −0
Original line number Diff line number Diff line
@@ -136,6 +136,8 @@ bool lspcon_init(struct intel_digital_port *intel_dig_port) 
		return false;

	}



	intel_dp_read_desc(dp);



	DRM_DEBUG_KMS("Success: LSPCON init\n");

	return true;

}