Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5f85f176 authored by Egbert Eich's avatar Egbert Eich Committed by Daniel Vetter
Browse files

DRM/i915: Add QUIRK_INVERT_BRIGHTNESS for NCR machines. 



NCR machines with LVDS panels using Intel chipsets need to have the
QUIRK_INVERT_BRIGHTNESS bit set.
Unfortunately NCR doesn't set a meaningful subvendor/subdevice ID,
therefore we add a DMI dependent quirk list.

Signed-off-by: default avatarEgbert Eich <eich@suse.de>
[danvet: fixup whitespace fail.]
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 6478d414

drivers/gpu/drm/i915/intel_display.c

+32 −0
Original line number Diff line number Diff line
@@ -7892,6 +7892,34 @@ struct intel_quirk { 
	void (*hook)(struct drm_device *dev);

};



/* For systems that don't have a meaningful PCI subdevice/subvendor ID */

struct intel_dmi_quirk {

	void (*hook)(struct drm_device *dev);

	const struct dmi_system_id (*dmi_id_list)[];

};



static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)

{

	DRM_INFO("Backlight polarity reversed on %s\n", id->ident);

	return 1;

}



static const struct intel_dmi_quirk intel_dmi_quirks[] = {

	{

		.dmi_id_list = &(const struct dmi_system_id[]) {

			{

				.callback = intel_dmi_reverse_brightness,

				.ident = "NCR Corporation",

				.matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),

					    DMI_MATCH(DMI_PRODUCT_NAME, ""),

				},

			},

			{ }  /* terminating entry */

		},

		.hook = quirk_invert_brightness,

	},

};



static struct intel_quirk intel_quirks[] = {

	/* HP Mini needs pipe A force quirk (LP: #322104) */

	{ 0x27ae, 0x103c, 0x361a, quirk_pipea_force },
@@ -7931,6 +7959,10 @@ static void intel_init_quirks(struct drm_device *dev) 
		     q->subsystem_device == PCI_ANY_ID))

			q->hook(dev);

	}

	for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {

		if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)

			intel_dmi_quirks[i].hook(dev);

	}

}



/* Disable the VGA plane that we never use */