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authorMa Ling <ling.ma@intel.com>2009-05-11 11:33:22 +0800
committerEric Anholt <eric@anholt.net>2009-05-14 16:00:31 -0700
commit9d2949a4cdb77b9b5c243c79be6489d34d770c7c (patch)
tree2cce38e2911d524bdf0c326404138b53ab1e6af4 /drivers
parentc9ed4486bdee3b54cb544fc181057bc6bf1ae45c (diff)
downloadop-kernel-dev-9d2949a4cdb77b9b5c243c79be6489d34d770c7c.zip
op-kernel-dev-9d2949a4cdb77b9b5c243c79be6489d34d770c7c.tar.gz
drm/i915: Set HDMI hot plug interrupt enable for only the output in question.
We detect HDMI output connection status by writing to HOT Plug Interrupt Detect Enable bit in PORT_HOTPLUG_EN. The behavior will generate a specified interrupt, which is caught by audio driver, but during one detection driver set all Detect Enable bits of HDMIB, HDMIC HDMID, and generate wrong interrupt signals for current output, according to the signals audio driver misunderstand device status. The patch intends to handle corresponding output precisely. It fixed freedesktop.org bug #21371 Signed-off-by: Ma Ling <ling.ma@intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/i915/intel_hdmi.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 5503742..d0983bb 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -155,11 +155,18 @@ intel_hdmi_detect(struct drm_connector *connector)
temp = I915_READ(PORT_HOTPLUG_EN);
- I915_WRITE(PORT_HOTPLUG_EN,
- temp |
- HDMIB_HOTPLUG_INT_EN |
- HDMIC_HOTPLUG_INT_EN |
- HDMID_HOTPLUG_INT_EN);
+ switch (hdmi_priv->sdvox_reg) {
+ case SDVOB:
+ temp |= HDMIB_HOTPLUG_INT_EN;
+ break;
+ case SDVOC:
+ temp |= HDMIC_HOTPLUG_INT_EN;
+ break;
+ default:
+ return connector_status_unknown;
+ }
+
+ I915_WRITE(PORT_HOTPLUG_EN, temp);
POSTING_READ(PORT_HOTPLUG_EN);
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