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Commit af7080f5 authored by Thulasimani,Sivakumar's avatar Thulasimani,Sivakumar Committed by Jani Nikula
Browse files

drm/i915: fix link rates reported for SKL 



This patch fixes the bug that SKL SKUs before B0 might return
HBR2 as supported even though it is not supposed to be enabled
on such platforms.

v2: optimize if else condition (Jani)

Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarSivakumar Thulasimani <sivakumar.thulasimani@intel.com>
[Jani: minor whitespace fix.]
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
parent 6cc38aca

drivers/gpu/drm/i915/intel_dp.c

+11 −8
Original line number Diff line number Diff line
@@ -1223,21 +1223,24 @@ static bool intel_dp_source_supports_hbr2(struct drm_device *dev) 
static int

intel_dp_source_rates(struct drm_device *dev, const int **source_rates)

{

	int size;



	if (IS_BROXTON(dev)) {

		*source_rates = bxt_rates;

		return ARRAY_SIZE(bxt_rates);

		size = ARRAY_SIZE(bxt_rates);

	} else if (IS_SKYLAKE(dev)) {

		*source_rates = skl_rates;

		return ARRAY_SIZE(skl_rates);

	}



		size = ARRAY_SIZE(skl_rates);

	} else {

		*source_rates = default_rates;

		size = ARRAY_SIZE(default_rates);

	}



	/* This depends on the fact that 5.4 is last value in the array */

	if (intel_dp_source_supports_hbr2(dev))

		return (DP_LINK_BW_5_4 >> 3) + 1;

	else

		return (DP_LINK_BW_2_7 >> 3) + 1;

	if (!intel_dp_source_supports_hbr2(dev))

		size--;



	return size;

}



static void