Do not clamp eDP to 18 bpp by default if the eDP BDB is missing from VBT.
This is hopefully a better version of
commit 4344b813f105a19f793f1fd93ad775b784648b95
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date: Fri Aug 10 11:10:20 2012 +0200
drm/i915: ignore eDP bpc settings from vbt
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
drivers/gpu/drm/i915/intel_bios.c | 11 ++---------
drivers/gpu/drm/i915/intel_display.c | 2 +-
2 files changed, 3 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 0ed6baf..56846ed 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -499,12 +499,8 @@ parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
edp = find_section(bdb, BDB_EDP);
if (!edp) {
- if (SUPPORTS_EDP(dev_priv->dev) && dev_priv->edp.support) {
- DRM_DEBUG_KMS("No eDP BDB found but eDP panel "
- "supported, assume %dbpp panel color "
- "depth.\n",
- dev_priv->edp.bpp);
- }
+ if (SUPPORTS_EDP(dev_priv->dev) && dev_priv->edp.support)
+ DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n");
return;
}
@@ -657,9 +653,6 @@ init_vbt_defaults(struct drm_i915_private *dev_priv)
dev_priv->lvds_use_ssc = 1;
dev_priv->lvds_ssc_freq = intel_bios_ssc_frequency(dev, 1);
DRM_DEBUG_KMS("Set default to SSC at %dMHz\n", dev_priv->lvds_ssc_freq);
-
- /* eDP data */
- dev_priv->edp.bpp = 18;
}
static int __init intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0997e60..b11e8c1 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4155,7 +4155,7 @@ static bool intel_choose_pipe_bpp_dither(struct drm_crtc *crtc,
/* Use VBT settings if we have an eDP panel */
unsigned int edp_bpc = dev_priv->edp.bpp / 3;
- if (edp_bpc < display_bpc) {
+ if (edp_bpc && edp_bpc < display_bpc) {
DRM_DEBUG_KMS("clamping display bpc (was %d) to eDP (%d)\n", display_bpc, edp_bpc);
display_bpc = edp_bpc;
}
--
1.7.9.5
