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authorPaulo Zanoni <paulo.r.zanoni@intel.com>2013-09-11 18:02:47 -0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2013-10-01 07:45:04 +0200
commit768f69c9fe601af39dfeb377f45909896f201444 (patch)
treece10f4bd9733cd6620360918d215decc404cc9b3 /drivers/gpu/drm/i915/intel_lvds.c
parentf740334775efd30631c556f7654b92dae66df494 (diff)
drm/i915: VBT's child_device_config changes over time
We currently treat the child_device_config as a simple struct, but this is not correct: new BDB versions change the meaning of some offsets, so the struct needs to be adjusted for each version. Since there are too many changes (today we're in version 170!), making a big versioned union would be too complicated, so child_device_config is now a union of 3 things: (i) a "raw" byte array that's safe to use anywhere; (ii) an "old" structure that's the one we've been using and should be safe to keep in the SDVO and TV code; and (iii) a "common" structure that should contain only fields that are common for all the known VBT versions. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_lvds.c')
-rw-r--r--drivers/gpu/drm/i915/intel_lvds.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 639650c66e5..67a4a8fd5f8 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -794,7 +794,8 @@ static bool lvds_is_present_in_vbt(struct drm_device *dev,
return true;
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
- struct child_device_config *child = dev_priv->vbt.child_dev + i;
+ union child_device_config *uchild = dev_priv->vbt.child_dev + i;
+ struct old_child_dev_config *child = &uchild->old;
/* If the device type is not LFP, continue.
* We have to check both the new identifiers as well as the