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drm/dp: Make sink count DP 1.2 aware

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Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Adam Jackson
2012-09-20 16:42:45 -04:00
committed by Daniel Vetter
parent 7883dc55e1
commit 232351777c
2 changed files with 6 additions and 6 deletions
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drivers/gpu/drm/i915/intel_dp.c
+4 -5
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@@ -2101,13 +2101,12 @@ intel_dp_detect_dpcd(struct intel_dp *intel_dp)
/* If we're HPD-aware, SINK_COUNT changes dynamically */
hpd = !!(intel_dp->downstream_ports[0] & DP_DS_PORT_HPD);
if (hpd) {
uint8_t sink_count;
uint8_t reg;
if (!intel_dp_aux_native_read_retry(intel_dp, DP_SINK_COUNT,
&sink_count, 1))
&reg, 1))
return connector_status_unknown;
sink_count &= DP_SINK_COUNT_MASK;
return sink_count ? connector_status_connected
: connector_status_disconnected;
return DP_GET_SINK_COUNT(reg) ? connector_status_connected
: connector_status_disconnected;
}
/* If no HPD, poke DDC gently */