Commit d25cfeee authored by Kuogee Hsieh's avatar Kuogee Hsieh Committed by Dmitry Baryshkov
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drm/msm/dp: parse data-lanes as property of dp_out endpoint 



Add capability to parser data-lanes as property of dp_out endpoint.
Also retain the original capability to parser data-lanes as property
of mdss_dp node to handle legacy case.

Changes in v6:
-- first patch after split parser patch into two

Changes in v7:
-- check "data-lanes" from endpoint first

Changes in v14:
-- replace "parser" with "parse" at commit subject
-- add matching brackets at dp_parser_misc()

Changes in v15:
-- concise dp_parser_misc()

Signed-off-by: default avatarKuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/516096/
Link: https://lore.kernel.org/r/1672163103-31254-4-git-send-email-quic_khsieh@quicinc.com


Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
parent 123f1255

drivers/gpu/drm/msm/dp/dp_parser.c

+14 −8
Original line number Diff line number Diff line
@@ -94,16 +94,22 @@ static int dp_parser_ctrl_res(struct dp_parser *parser) 
static int dp_parser_misc(struct dp_parser *parser)

{

	struct device_node *of_node = parser->pdev->dev.of_node;

	int len;

	int cnt;



	len = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES);

	if (len < 0) {

		DRM_WARN("Invalid property \"data-lanes\", default max DP lanes = %d\n",

			 DP_MAX_NUM_DP_LANES);

		len = DP_MAX_NUM_DP_LANES;

	/*

	 * data-lanes is the property of dp_out endpoint

	 */

	cnt = drm_of_get_data_lanes_count_ep(of_node, 1, 0, 1, DP_MAX_NUM_DP_LANES);

	if (cnt < 0) {

		/* legacy code, data-lanes is the property of mdss_dp node */

		cnt = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES);

	}



	parser->max_dp_lanes = len;

	if (cnt > 0)

		parser->max_dp_lanes = cnt;

	else

		parser->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */



	return 0;

}