> Tested-by: Marco Krüger <krgsch@xxxxxxxxx>
> Tested-by: Alexey Shumitsky <alexey.shumitsky@xxxxxxxxx>
> Tested-by: Sean Greenslade <sean@xxxxxxxxxxxxxxxxxx>
> Tested-by: Emil Andersen Lauridsen <mine809@xxxxxxxxx>
> Tested-by: Robin Müller <rm1990@xxxxxx>
> Tested-by: oceans112@xxxxxxxxx
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Acked-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> Tested-by: James Hogan <james@xxxxxxxxxxxxx>
That works for me too on Terra Mobile Ultrabook 1450 II.
Thanks!
Tested-by: Adrien Vergé <adrienverge@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_opregion.c | 27 +++++++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
> index adca262d591a..7acbbbf97833 100644
> --- a/drivers/gpu/drm/i915/intel_opregion.c
> +++ b/drivers/gpu/drm/i915/intel_opregion.c
> @@ -1047,6 +1047,23 @@ err_out:
> return err;
> }
>
> +static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
> +{
> + DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
> + return 1;
> +}
> +
> +static const struct dmi_system_id intel_use_opregion_panel_type[] = {
> + {
> + .callback = intel_use_opregion_panel_type_callback,
> + .ident = "Conrac GmbH IX45GM2",
> + .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
> + DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
> + },
> + },
> + { }
> +};
> +
> int
> intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
> {
> @@ -1073,6 +1090,16 @@ intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
> }
>
> /*
> + * So far we know that some machined must use it, others must not use it.
> + * There doesn't seem to be any way to determine which way to go, except
> + * via a quirk list :(
> + */
> + if (!dmi_check_system(intel_use_opregion_panel_type)) {
> + DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1);
> + return -ENODEV;
> + }
> +
> + /*
> * FIXME On Dell XPS 13 9350 the OpRegion panel type (0) gives us
> * low vswing for eDP, whereas the VBT panel type (2) gives us normal
> * vswing instead. Low vswing results in some display flickers, so
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