diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2013-09-27 14:48:42 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2013-10-01 10:30:58 +1000 |
| commit | c9ff160b169b4db1e562001f08add446c1f469c7 (patch) | |
| tree | ad8b65a366cc0ada9f12629d66c85e9da09c964b /drivers/gpu/drm/i915/intel_dp.c | |
| parent | 3d2e423e0f0f0a3de504a6acae858c651599ba25 (diff) | |
drm/i915/dp: downstream port capabilities are not present in DPCD 1.0
We haven't read the downstream port caps for DPCD 1.0, so don't use
them.
v2: use defines for DPCD 1.0 downstream port types
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 60d2006fe15..605908df95d 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -2810,7 +2810,6 @@ static enum drm_connector_status intel_dp_detect_dpcd(struct intel_dp *intel_dp) { uint8_t *dpcd = intel_dp->dpcd; - bool hpd; uint8_t type; if (!intel_dp_get_dpcd(intel_dp)) @@ -2821,8 +2820,8 @@ intel_dp_detect_dpcd(struct intel_dp *intel_dp) return connector_status_connected; /* If we're HPD-aware, SINK_COUNT changes dynamically */ - hpd = !!(intel_dp->downstream_ports[0] & DP_DS_PORT_HPD); - if (hpd) { + if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && + intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { uint8_t reg; if (!intel_dp_aux_native_read_retry(intel_dp, DP_SINK_COUNT, ®, 1)) @@ -2836,9 +2835,18 @@ intel_dp_detect_dpcd(struct intel_dp *intel_dp) return connector_status_connected; /* Well we tried, say unknown for unreliable port types */ - type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; - if (type == DP_DS_PORT_TYPE_VGA || type == DP_DS_PORT_TYPE_NON_EDID) - return connector_status_unknown; + if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { + type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; + if (type == DP_DS_PORT_TYPE_VGA || + type == DP_DS_PORT_TYPE_NON_EDID) + return connector_status_unknown; + } else { + type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & + DP_DWN_STRM_PORT_TYPE_MASK; + if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || + type == DP_DWN_STRM_PORT_TYPE_OTHER) + return connector_status_unknown; + } /* Anything else is out of spec, warn and ignore */ DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); |