drm/i915: Add support for retrying hotplug

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There is some scenarios that we are aware that sink probe can fail,
so lets add the infrastructure to let hotplug() hook to request
another probe after some time.

v2: Handle shared HPD pins (Imre)
v3: Rebased
v4: Renamed INTEL_HOTPLUG_NOCHANGE to INTEL_HOTPLUG_UNCHANGED to keep
it consistent(Rodrigo)
v5: Making the working queue used explicit through all the callers to
hotplug_work (Ville)

Tested-by: Timo Aaltonen <tjaalton@ubuntu.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190712005343.24571-1-jose.souza@intel.com

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This commit is contained in:

Imre Deak 2019-07-11 17:53:42 -07:00 • committed by José Roberto de Souza

parent 48cf0a1ec1

commit 3944709df8

8 changed files with 80 additions and 32 deletions

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12

drivers/gpu/drm/i915/display/intel_ddi.c

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12

drivers/gpu/drm/i915/display/intel_dp.c

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59

drivers/gpu/drm/i915/display/intel_hotplug.c

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5

drivers/gpu/drm/i915/display/intel_hotplug.h

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8

drivers/gpu/drm/i915/display/intel_sdvo.c

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2

drivers/gpu/drm/i915/i915_debugfs.c

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3

drivers/gpu/drm/i915/i915_drv.h

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11

drivers/gpu/drm/i915/intel_drv.h

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