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drm/i915: Only use VBT panel mode on eDP if no EDID is found

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We're going to assume that EDID is more reliable than the VBT tables
for eDP panels, which is notably true on MacBook machines where the
VBT contains completely bogus data.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Keith Packard 2011-09-19 14:33:26 -07:00
parent 192aac1f19
commit 47f0eb2234
1 changed files with 10 additions and 10 deletions
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20
drivers/gpu/drm/i915/intel_dp.c
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@ -1755,7 +1755,16 @@ static int intel_dp_get_modes(struct drm_connector *connector)
/* if eDP has no EDID, try to use fixed panel mode from VBT */
if (is_edp(intel_dp)) {
if (dev_priv->panel_fixed_mode != NULL) {
/* initialize panel mode from VBT if available for eDP */
if (dev_priv->panel_fixed_mode == NULL && dev_priv->lfp_lvds_vbt_mode != NULL) {
dev_priv->panel_fixed_mode =
drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode);
if (dev_priv->panel_fixed_mode) {
dev_priv->panel_fixed_mode->type |=
DRM_MODE_TYPE_PREFERRED;
}
}
if (dev_priv->panel_fixed_mode) {
struct drm_display_mode *mode;
mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode);
drm_mode_probed_add(connector, mode);
@ -2068,15 +2077,6 @@ intel_dp_init(struct drm_device *dev, int output_reg)
intel_encoder->hot_plug = intel_dp_hot_plug;
if (is_edp(intel_dp)) {
/* initialize panel mode from VBT if available for eDP */
if (dev_priv->lfp_lvds_vbt_mode) {
dev_priv->panel_fixed_mode =
drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode);
if (dev_priv->panel_fixed_mode) {
dev_priv->panel_fixed_mode->type |=
DRM_MODE_TYPE_PREFERRED;
}
}
dev_priv->int_edp_connector = connector;
intel_panel_setup_backlight(dev);
}