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drm/i915/hdmi: Query the live connector status bit for G4x

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Similar to g4x_dp_detect() we should probe the PORT_HOTPLUG_STATUS as to
whether the connector is active prior to attempting to retrieve the EDID.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2012-05-11 18:01:34 +01:00 committed by Daniel Vetter
parent 084b612ecf
commit 8ec22b214d
1 changed files with 27 additions and 0 deletions
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27
drivers/gpu/drm/i915/intel_hdmi.c
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@ -452,6 +452,30 @@ static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
return true;
}
static bool g4x_hdmi_connected(struct intel_hdmi *intel_hdmi)
{
struct drm_device *dev = intel_hdmi->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t bit;
switch (intel_hdmi->sdvox_reg) {
case HDMIB:
bit = HDMIB_HOTPLUG_LIVE_STATUS;
break;
case HDMIC:
bit = HDMIC_HOTPLUG_LIVE_STATUS;
break;
case HDMID:
bit = HDMID_HOTPLUG_LIVE_STATUS;
break;
default:
bit = 0;
break;
}
return I915_READ(PORT_HOTPLUG_STAT) & bit;
}
static enum drm_connector_status
intel_hdmi_detect(struct drm_connector *connector, bool force)
{
@ -460,6 +484,9 @@ intel_hdmi_detect(struct drm_connector *connector, bool force)
struct edid *edid;
enum drm_connector_status status = connector_status_disconnected;
if (IS_G4X(connector->dev) && !g4x_hdmi_connected(intel_hdmi))
return status;
intel_hdmi->has_hdmi_sink = false;
intel_hdmi->has_audio = false;
edid = drm_get_edid(connector,