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| author | Mathias Fröhlich <Mathias.Froehlich@web.de> | 2012-03-01 05:44:35 (GMT) |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-03-01 22:22:30 (GMT) |
| commit | c10e408a00bb74c39f4f9b817f2b948851513377 (patch) | |
| tree | f86a351e1487e472bb823f252730f94dfe4cdad6 /drivers/gpu/drm/i915/intel_bios.c | |
| parent | c501ae7f332cdaf42e31af30b72b4b66cbbb1604 (diff) | |
| download | linux-fsl-qoriq-c10e408a00bb74c39f4f9b817f2b948851513377.tar.xz | |
i915: Add option to bypass vbt table.
This change enables the use of displays where the vbt table just
contains inappropriate values, but either the vesa defaults or
the video=... modes do something sensible with the attached display.
The problem happens with an embedded board that contains vbt bios
tables that do not match the attached display. Using this change and
the appropriate kernel boot command line they are able to use an
otherwise completely unusable secondary display on that embedded
board.
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Mathias Froehlich <Mathias.Froehlich@web.de>
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.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 8168d8f..0ae76d6 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -255,6 +255,11 @@ parse_sdvo_panel_data(struct drm_i915_private *dev_priv, int index; index = i915_vbt_sdvo_panel_type; + if (index == -2) { + DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n"); + return; + } + if (index == -1) { struct bdb_sdvo_lvds_options *sdvo_lvds_options; |