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drm/i915: Only wait for required lanes in vlv_wait_port_ready()

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Currently vlv_wait_port_ready() waits for all four lanes on the
appropriate channel. This no longer works on CHV when the unused
lanes may be power gated. So pass in a mask of lanes that the
caller is expecting to be ready.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by:  Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä
2015-04-10 18:21:31 +03:00
committed by Daniel Vetter
parent c7c7372edc
commit 9b6de0a155
4 changed files with 13 additions and 8 deletions
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4
drivers/gpu/drm/i915/intel_hdmi.c
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@@ -1324,7 +1324,7 @@ static void vlv_hdmi_pre_enable(struct intel_encoder *encoder)
intel_enable_hdmi(encoder);
vlv_wait_port_ready(dev_priv, dport);
vlv_wait_port_ready(dev_priv, dport, 0x0);
}
static void vlv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
@@ -1641,7 +1641,7 @@ static void chv_hdmi_pre_enable(struct intel_encoder *encoder)
intel_enable_hdmi(encoder);
vlv_wait_port_ready(dev_priv, dport);
vlv_wait_port_ready(dev_priv, dport, 0x0);
}
static void intel_hdmi_destroy(struct drm_connector *connector)