diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 5ed8cebdd41f..f37058fa525c 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -757,6 +757,14 @@ parse_panel_options(struct drm_i915_private *i915, panel->vbt.lvds_dither = lvds_options->pixel_dither; + /* + * Empirical evidence indicates the block size can be + * either 4,14,16,24+ bytes. For older VBTs no clear + * relationship between the block size vs. BDB version. + */ + if (get_blocksize(lvds_options) < 16) + return; + drrs_mode = (lvds_options->dps_panel_type_bits >> (panel_type * 2)) & MODE_MASK; /* |