[PATCH 19/21] drm/i915: Never allow VGA on LPT LP PCH

[Ben Widawsky <benjamin.widawsky@intel.com>]

Sometimes the VBT lies, I guess? I can't explain why this occurs, but it
does on the early platforms we have.

Since it seems never unsafe to do this, I don't feel we need any quirk
or warnings.

Cc: Paulo Zanoni <przanoni@gmail.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
 drivers/gpu/drm/i915/intel_display.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6ced1a1..00b0bf9 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5671,6 +5671,7 @@ static void lpt_disable_clkout_dp(struct drm_device *dev)
 
 static void lpt_init_pch_refclk(struct drm_device *dev)
 {
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct drm_mode_config *mode_config = &dev->mode_config;
 	struct intel_encoder *encoder;
 	bool has_vga = false;
@@ -5683,7 +5684,7 @@ static void lpt_init_pch_refclk(struct drm_device *dev)
 		}
 	}
 
-	if (has_vga)
+	if (dev_priv->pch_id != INTEL_PCH_LPT_LP_DEVICE_ID_TYPE && has_vga)
 		lpt_enable_clkout_dp(dev, true, true);
 	else
 		lpt_disable_clkout_dp(dev);
-- 
1.8.4.2