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drm/i915/tgl: Add hpd interrupt handling

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Add hotdplug detection for all ports on TGP. icp_hpd_detection_setup()
is refactored to be shared with TGP.

While we increase the number of pins, add a BUILD_BUG_ON() to avoid
going over the number of bits allowed.

v2: use BITS_PER_TYPE and correct type for BUILD_BUG_ON() check
    (requested by Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jose Souza <jose.souza@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190725234813.27179-2-lucas.demarchi@intel.com
This commit is contained in:
Lucas De Marchi
2019-07-25 16:48:11 -07:00
parent e0e712fe42
commit 52dfdba0a9
4 changed files with 154 additions and 12 deletions
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6
drivers/gpu/drm/i915/display/intel_hotplug.c
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@@ -104,6 +104,12 @@ enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,
if (IS_CNL_WITH_PORT_F(dev_priv))
return HPD_PORT_E;
return HPD_PORT_F;
case PORT_G:
return HPD_PORT_G;
case PORT_H:
return HPD_PORT_H;
case PORT_I:
return HPD_PORT_I;
default:
MISSING_CASE(port);
return HPD_NONE;