On some GEN9 platforms, slowly unplugging (wiggling) the HDMI cable makes
the kernel to believe the HDMI display is still connected. This is because
the HDMI DDC lines are disconnected a little bit later after the hot-plug
interrupt triggered thus an immediate edid fetch can be made. Use digital
port live states to authorize the edid read.
v2: Fix the formatting issue
v3: Use digital port states to authorize the edid read
Cc: Jani Nikula <jani.nik...@intel.com>
Cc: Chris Chiu <c...@endlessm.com>
Signed-off-by: Guang Bai <guang....@intel.com>
---
drivers/gpu/drm/i915/intel_hdmi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c
b/drivers/gpu/drm/i915/intel_hdmi.c
index e2c6a2b3e8f2..8cf7c78b8cdd 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1929,7 +1929,7 @@ intel_hdmi_detect(struct drm_connector *connector, bool
force)
intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
- if (IS_ICELAKE(dev_priv) &&
+ if ((IS_ICELAKE(dev_priv) || IS_GEN9_BC(dev_priv)) &&
!intel_digital_port_connected(encoder))
goto out;
--
2.17.1
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