Because they should have been disabled when shutting down the display
pipe previously. To ensure that this is the case, add a few assserts
instead of unconditionally disabling the fdi link.
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/i915/intel_display.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6c06109..0973797 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3182,10 +3182,12 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
is_pch_port = intel_crtc_driving_pch(crtc);
- if (is_pch_port)
+ if (is_pch_port) {
ironlake_fdi_pll_enable(intel_crtc);
- else
- ironlake_fdi_disable(crtc);
+ } else {
+ assert_fdi_tx_disabled(dev_priv, pipe);
+ assert_fdi_rx_disabled(dev_priv, pipe);
+ }
/* Enable panel fitting for LVDS */
if (dev_priv->pch_pf_size &&
--
1.7.11.2
