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drm/i915/dp: Print only sink or branch specific OUI based on dev type

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There are two separate sets of DPCD registers for the DP OUI - as well as
for the device ID and HW/SW revision - based on whether the given DP
device is a branch or a sink. Currently we print both branch and sink
OUIs, for consistency print only the one that corresponds to the
probed device.

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

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1477326811-30431-4-git-send-email-imre.deak@intel.com
This commit is contained in:
Imre Deak 2016-10-24 19:33:26 +03:00
parent 6f172a43a6
commit 5e89667742
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/i915/intel_dp.c
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@ -3624,17 +3624,17 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
static void
intel_dp_probe_oui(struct intel_dp *intel_dp)
{
bool is_branch = drm_dp_is_branch(intel_dp->dpcd);
u8 buf[3];
if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT))
return;
if (drm_dp_dpcd_read(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3)
DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n",
buf[0], buf[1], buf[2]);
if (drm_dp_dpcd_read(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3)
DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n",
if (drm_dp_dpcd_read(&intel_dp->aux,
is_branch ? DP_BRANCH_OUI : DP_SINK_OUI,
buf, 3) == 3)
DRM_DEBUG_KMS("%s OUI: %02hx%02hx%02hx\n",
is_branch ? "Branch" : "Sink",
buf[0], buf[1], buf[2]);
}