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| author | Takashi Iwai | 2012-03-20 13:07:06 +0100 |
|---|---|---|
| committer | Daniel Vetter | 2012-03-22 23:23:45 +0100 |
| commit | 121d527a323f3fde313a8f522060ba859ee405b3 (patch) | |
| tree | 740533a418e5ba0473d812ae53d9f7442b22b92d /drivers/gpu/drm/i915/intel_display.c | |
| parent | drm/i915: Check VBIOS value for determining LVDS dual channel mode, too (diff) | |
| download | kernel-qcow2-linux-121d527a323f3fde313a8f522060ba859ee405b3.tar.gz kernel-qcow2-linux-121d527a323f3fde313a8f522060ba859ee405b3.tar.xz kernel-qcow2-linux-121d527a323f3fde313a8f522060ba859ee405b3.zip | |
drm/i915: Add lvds_channel module option
Add a new module optoin lvds_channel to specify the LVDS channel mode
explicitly instead of probing the LVDS register value set by BIOS.
This will be helpful when VBT is broken or incompatible with the
current code.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=42842
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index a76ac2eb9938..a0e31660381c 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -365,6 +365,10 @@ static bool is_dual_link_lvds(struct drm_i915_private *dev_priv, { unsigned int val; + /* use the module option value if specified */ + if (i915_lvds_channel_mode > 0) + return i915_lvds_channel_mode == 2; + if (dev_priv->lvds_val) val = dev_priv->lvds_val; else { |