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authorPaulo Zanoni <paulo.r.zanoni@intel.com>2013-04-08 22:48:07 +0400
committerDaniel Vetter <daniel.vetter@ffwll.ch>2013-04-18 11:43:31 +0400
commit3f704fa2778d3fe45e6529825a5c7a8bcbc686f4 (patch)
treee89e97b4f8718d02260ef7a0c7613a55c7ee41f9 /drivers/gpu/drm/i915/intel_bios.c
parentac4c16c56cd41f320af064fc7bf28a1ec82c2278 (diff)
downloadlinux-3f704fa2778d3fe45e6529825a5c7a8bcbc686f4.tar.xz
drm/i915: set CPT FDI RX polarity bits based on VBT
Check the VBT to see if the machine has inverted FDI RX polarity on CPT. Based on this bit, set the appropriate bit on the TRANS_CHICKEN2 registers. This should fix some machines that were showing black screens on all outputs. Cc: stable@vger.kernel.org Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=60029 Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
-rw-r--r--drivers/gpu/drm/i915/intel_bios.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 194df27c89eb..95070b2124c6 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -351,12 +351,14 @@ parse_general_features(struct drm_i915_private *dev_priv,
dev_priv->lvds_ssc_freq =
intel_bios_ssc_frequency(dev, general->ssc_freq);
dev_priv->display_clock_mode = general->display_clock_mode;
- DRM_DEBUG_KMS("BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d\n",
+ dev_priv->fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
+ DRM_DEBUG_KMS("BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d fdi_rx_polarity_inverted %d\n",
dev_priv->int_tv_support,
dev_priv->int_crt_support,
dev_priv->lvds_use_ssc,
dev_priv->lvds_ssc_freq,
- dev_priv->display_clock_mode);
+ dev_priv->display_clock_mode,
+ dev_priv->fdi_rx_polarity_inverted);
}
}