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drm/i915: Allow LVDS on pipe A on gen4+
The gen4 docs say it works, so why not. Tested on Ironlake. Signed-off-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Eric Anholt <eric@anholt.net>
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@ -3303,7 +3303,9 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
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lvds_reg = PCH_LVDS;
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lvds = I915_READ(lvds_reg);
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lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP | LVDS_PIPEB_SELECT;
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lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
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if (pipe == 1)
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lvds |= LVDS_PIPEB_SELECT;
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/* set the corresponsding LVDS_BORDER bit */
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lvds |= dev_priv->lvds_border_bits;
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/* Set the B0-B3 data pairs corresponding to whether we're going to
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@ -953,6 +953,8 @@ void intel_lvds_init(struct drm_device *dev)
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intel_encoder->clone_mask = (1 << INTEL_LVDS_CLONE_BIT);
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intel_encoder->crtc_mask = (1 << 1);
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if (IS_I965G(dev))
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intel_encoder->crtc_mask |= (1 << 0);
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drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs);
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drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs);
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connector->display_info.subpixel_order = SubPixelHorizontalRGB;
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