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drm/i915: fix VDD state tracking after system resume

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Just like during booting the BIOS can leave the VDD bit enabled after
system resume. So apply the same state sanitization there too. This
fixes a problem where after resume the port power domain refcount gets
unbalanced.

v2:
- unchanged
v3:
- call edp sanitizing from the encoder reset handler (Daniel)

Reported-and-tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Imre Deak 2014-07-31 14:03:36 +03:00 committed by Daniel Vetter
parent f573de5a84
commit 6d93c0c417
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/i915/intel_dp.c
View file

@ -4002,6 +4002,11 @@ void intel_dp_encoder_destroy(struct drm_encoder *encoder)
kfree(intel_dig_port);
}
static void intel_dp_encoder_reset(struct drm_encoder *encoder)
{
intel_edp_panel_vdd_sanitize(to_intel_encoder(encoder));
}
static const struct drm_connector_funcs intel_dp_connector_funcs = {
.dpms = intel_connector_dpms,
.detect = intel_dp_detect,
@ -4017,6 +4022,7 @@ static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs =
};
static const struct drm_encoder_funcs intel_dp_enc_funcs = {
.reset = intel_dp_encoder_reset,
.destroy = intel_dp_encoder_destroy,
};