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drm/i915/dp: Reset the link params on HPD/connected boot/resume

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The max link parameters should be set/reset only on HPD or
connected boot case or on system resume.

Add a flag reset_link_params to intel_dp to decide when
to reset the max link parameters. This prevents the parameters
from getting reset/overwritten through all other
connector->funcs->detect() calls. This is important when link
training fails and the max link params are modified to the
lower fallback values.

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1486515251-23469-1-git-send-email-manasi.d.navare@intel.com
This commit is contained in:
Manasi Navare
2017-02-07 16:54:11 -08:00
committed by Jani Nikula
parent 75c7b0b862
commit d7e8ef02a6
2 changed files with 13 additions and 4 deletions
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1
drivers/gpu/drm/i915/intel_drv.h
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@@ -933,6 +933,7 @@ struct intel_dp {
bool has_audio;
bool detect_done;
bool channel_eq_status;
bool reset_link_params;
enum hdmi_force_audio force_audio;
bool limited_color_range;
bool color_range_auto;