drm/i915: Fix the VLV/CHV DSI panel orientation hw readout

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Let's make sure the DSI port is actually on before we go
poking at the plane register to determine which way
it's rotated. Otherwise we could be looking at a plane
that is feeding a HDMI port for instance.

And in order to read the plane register we need the power
well to be on. Make sure that is indeed the case. We'll
also make sure the plane is actually enabled before we
trust the rotation bit to tell us the truth.

v2: s/intel_dsi/vlv_dsi/

Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181022141953.3889-1-ville.syrjala@linux.intel.com
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> #irc

...

This commit is contained in:

Ville Syrjälä 2018-10-22 17:19:53 +03:00

parent f255c624c1

commit 86ef615fa1

1 changed files with 43 additions and 13 deletions

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drivers/gpu/drm/i915/vlv_dsi.c

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