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drm/i915: Trigger modesetting if force-audio changes

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If the user changes the force-audio property and it no longer reflects
the current configuration, then we need to trigger a mode set in order
to update the registers.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson
2011-02-09 18:46:58 +00:00
parent 139467433e
commit 1aad7ac045
3 changed files with 91 additions and 18 deletions
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39
drivers/gpu/drm/i915/intel_hdmi.c
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@@ -251,6 +251,27 @@ static int intel_hdmi_get_modes(struct drm_connector *connector)
&dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
}
static bool
intel_hdmi_detect_audio(struct drm_connector *connector)
{
struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
struct drm_i915_private *dev_priv = connector->dev->dev_private;
struct edid *edid;
bool has_audio = false;
edid = drm_get_edid(connector,
&dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
if (edid) {
if (edid->input & DRM_EDID_INPUT_DIGITAL)
has_audio = drm_detect_monitor_audio(edid);
connector->display_info.raw_edid = NULL;
kfree(edid);
}
return has_audio;
}
static int
intel_hdmi_set_property(struct drm_connector *connector,
struct drm_property *property,
@@ -264,17 +285,23 @@ intel_hdmi_set_property(struct drm_connector *connector,
return ret;
if (property == intel_hdmi->force_audio_property) {
if (val == intel_hdmi->force_audio)
int i = val;
bool has_audio;
if (i == intel_hdmi->force_audio)
return 0;
intel_hdmi->force_audio = val;
intel_hdmi->force_audio = i;
if (val > 0 && intel_hdmi->has_audio)
return 0;
if (val < 0 && !intel_hdmi->has_audio)
if (i == 0)
has_audio = intel_hdmi_detect_audio(connector);
else
has_audio = i > 0;
if (has_audio == intel_hdmi->has_audio)
return 0;
intel_hdmi->has_audio = val > 0;
intel_hdmi->has_audio = has_audio;
goto done;
}