diff options
| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2014-05-13 16:07:37 +0100 |
|---|---|---|
| committer |   Jani Nikula <jani.nikula@intel.com> | 2014-05-15 11:32:35 +0300 |
| commit | afba0b5a221c0dacbbdf3a778d539fbc90fc6191 (patch) | |
| tree | 4eb376198cdb3e5272762c504ae5688f342a8cf1 /drivers/gpu | |
| parent | drm/i915/dp: force eDP lane count to max available lanes on BDW (diff) | |
| download | linux-dev-afba0b5a221c0dacbbdf3a778d539fbc90fc6191.tar.xz linux-dev-afba0b5a221c0dacbbdf3a778d539fbc90fc6191.zip | |
drm/i915: Use the first mode if there is no preferred mode in the EDID
This matches the algorithm used by earlier kernels when selecting the
mode for the fbcon. And only if there is no modes at all, do we fall
back to using the BIOS configuration. Seamless transition is still
preserved (from the BIOS configuration to ours) so long as the BIOS has
also chosen what we hope is the native configuration.
Reported-by: Knut Petersen <Knut_Petersen@t-online.de>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78655
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[Jani: applied Chris' "Please imagine that I wrote this correctly."]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_fbdev.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c index fce4a0d93c0b..f73ba5e6b7a8 100644 --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -387,6 +387,15 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, height); } + /* No preferred mode marked by the EDID? Are there any modes? */ + if (!modes[i] && !list_empty(&connector->modes)) { + DRM_DEBUG_KMS("using first mode listed on connector %s\n", + drm_get_connector_name(connector)); + modes[i] = list_first_entry(&connector->modes, + struct drm_display_mode, + head); + } + /* last resort: use current mode */ if (!modes[i]) { /* |