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>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 5a69800..eb4a265 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3303,7 +3303,9 @@
lvds_reg = PCH_LVDS;
lvds = I915_READ(lvds_reg);
- lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP | LVDS_PIPEB_SELECT;
+ lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
+ if (pipe == 1)
+ lvds |= LVDS_PIPEB_SELECT;
/* set the corresponsding LVDS_BORDER bit */
lvds |= dev_priv->lvds_border_bits;
/* Set the B0-B3 data pairs corresponding to whether we're going to
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index bc0ab7d..a69de00 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -953,6 +953,8 @@
intel_encoder->clone_mask = (1 << INTEL_LVDS_CLONE_BIT);
intel_encoder->crtc_mask = (1 << 1);
+ if (IS_I965G(dev))
+ intel_encoder->crtc_mask |= (1 << 0);
drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs);
drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs);
connector->display_info.subpixel_order = SubPixelHorizontalRGB;