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authorImre Deak <imre.deak@intel.com>2015-11-27 19:55:27 +0300
committerJani Nikula <jani.nikula@intel.com>2015-12-02 17:42:56 +0300
commit88747f133b20e1a2b2f303a68c97ebca211eddc1 (patch)
tree9e3a34a910162af4d95f764e7417e674d6accf18 /drivers/gpu
parentac9b8236551d1177fd07b56aef9b565d1864420d (diff)
downloadlinux-88747f133b20e1a2b2f303a68c97ebca211eddc1.tar.xz
drm/i915/ddi: fix intel_display_port_aux_power_domain() after HDMI detect
Due to the current sharing of the DDI encoder between DP and HDMI connectors we can run the DP detection after the HDMI detection has already set the shared encoder's type. For now solve this keeping the current behavior and running the detection in this case too. For a proper solution Ville suggested to split the encoder into an HDMI and DP one, that can be done as a follow-up. This issue triggers the WARN in intel_display_port_aux_power_domain() and was introduced in: commit 25f78f58e5bfb46a270ce4d690fb49dc104558b1 Author: Ville Syrjälä <ville.syrjala@linux.intel.com> Date: Mon Nov 16 15:01:04 2015 +0100 drm/i915: Clean up AUX power domain handling CC: Patrik Jakobsson <patrik.jakobsson@linux.intel.com> CC: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com> [Cherry-picked from drm-intel-next-queued 651174a4 (Imre)] Signed-off-by: Imre Deak <imre.deak@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1448643329-18675-4-git-send-email-imre.deak@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/intel_display.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 19915b1f7736..ea03006cc08e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5258,7 +5258,14 @@ intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder)
switch (intel_encoder->type) {
case INTEL_OUTPUT_UNKNOWN:
- /* Only DDI platforms should ever use this output type */
+ case INTEL_OUTPUT_HDMI:
+ /*
+ * Only DDI platforms should ever use these output types.
+ * We can get here after the HDMI detect code has already set
+ * the type of the shared encoder. Since we can't be sure
+ * what's the status of the given connectors, play safe and
+ * run the DP detection too.
+ */
WARN_ON_ONCE(!HAS_DDI(dev));
case INTEL_OUTPUT_DISPLAYPORT:
case INTEL_OUTPUT_EDP: