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drm/i915: Require digital monitor on HDMI ports for detect

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HDMI and DVI both require DDC/EDID on monitors, so use
that to know when a monitor is connected as the hot-plug
pins are shared with SDVO and DisplayPort

Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Keith Packard 2009-05-05 09:52:46 -07:00
parent 52dc7d32b8
commit aa93d632c4
1 changed files with 16 additions and 14 deletions
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30
drivers/gpu/drm/i915/intel_hdmi.c
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@ -31,6 +31,7 @@
#include "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "drm_edid.h"
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"
@ -129,20 +130,26 @@ static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
return true;
}
static void
intel_hdmi_sink_detect(struct drm_connector *connector)
static enum drm_connector_status
intel_hdmi_edid_detect(struct drm_connector *connector)
{
struct intel_output *intel_output = to_intel_output(connector);
struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv;
struct edid *edid = NULL;
enum drm_connector_status status = connector_status_disconnected;
edid = drm_get_edid(&intel_output->base,
&intel_output->ddc_bus->adapter);
if (edid != NULL) {
hdmi_priv->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
kfree(edid);
hdmi_priv->has_hdmi_sink = false;
if (edid) {
if (edid->digital) {
status = connector_status_connected;
hdmi_priv->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
}
intel_output->base.display_info.raw_edid = NULL;
kfree(edid);
}
return status;
}
static enum drm_connector_status
@ -154,11 +161,7 @@ igdng_hdmi_detect(struct drm_connector *connector)
/* FIXME hotplug detect */
hdmi_priv->has_hdmi_sink = false;
intel_hdmi_sink_detect(connector);
if (hdmi_priv->has_hdmi_sink)
return connector_status_connected;
else
return connector_status_disconnected;
return intel_hdmi_edid_detect(connector);
}
static enum drm_connector_status
@ -201,10 +204,9 @@ intel_hdmi_detect(struct drm_connector *connector)
return connector_status_unknown;
}
if ((I915_READ(PORT_HOTPLUG_STAT) & bit) != 0) {
intel_hdmi_sink_detect(connector);
return connector_status_connected;
} else
if ((I915_READ(PORT_HOTPLUG_STAT) & bit) != 0)
return intel_hdmi_edid_detect(connector);
else
return connector_status_disconnected;
}