summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/i915/intel_sdvo.c
diff options
context:
space:
mode:
authorMa Ling <ling.ma@intel.com>2009-04-02 13:13:26 +0800
committerEric Anholt <eric@anholt.net>2009-04-08 10:18:17 -0700
commit9dff6af860d6b7f661d4360eb859837afaca0a1b (patch)
tree7634eec5ea79f3855746372e379703ff791c9ae4 /drivers/gpu/drm/i915/intel_sdvo.c
parent6115707be0e85a9b825f10e95143cb705b87fef8 (diff)
drm/i915: sync hdmi detection by hdmi identifier with 2D
Currently we detect HDMI monitor by hardware detection, but if an HDMI-DVI adapter is used to connect a DVI monitor, hardware detection will incorrectly take monitor as HDMI. HDMI spec says any device containing IEEE registration identifier will be treated as HDMI device. The patch intends to detect HDMI monitor by drm_detect_hdmi_monitor function which follows that rule. Signed-off-by: Ma Ling <ling.ma@intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sdvo.c')
-rw-r--r--drivers/gpu/drm/i915/intel_sdvo.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 7b31f55f55c..9913651c1e1 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1357,6 +1357,23 @@ void intel_sdvo_set_hotplug(struct drm_connector *connector, int on)
intel_sdvo_read_response(intel_output, &response, 2);
}
+static void
+intel_sdvo_hdmi_sink_detect(struct drm_connector *connector)
+{
+ struct intel_output *intel_output = to_intel_output(connector);
+ struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
+ struct edid *edid = NULL;
+
+ intel_sdvo_set_control_bus_switch(intel_output, sdvo_priv->ddc_bus);
+ edid = drm_get_edid(&intel_output->base,
+ &intel_output->ddc_bus->adapter);
+ if (edid != NULL) {
+ sdvo_priv->is_hdmi = drm_detect_hdmi_monitor(edid);
+ kfree(edid);
+ intel_output->base.display_info.raw_edid = NULL;
+ }
+}
+
static enum drm_connector_status intel_sdvo_detect(struct drm_connector *connector)
{
u8 response[2];
@@ -1371,9 +1388,10 @@ static enum drm_connector_status intel_sdvo_detect(struct drm_connector *connect
if (status != SDVO_CMD_STATUS_SUCCESS)
return connector_status_unknown;
- if ((response[0] != 0) || (response[1] != 0))
+ if ((response[0] != 0) || (response[1] != 0)) {
+ intel_sdvo_hdmi_sink_detect(connector);
return connector_status_connected;
- else
+ } else
return connector_status_disconnected;
}