From 1bfc9ff61bceef0df963919b84e0f438671f730c Mon Sep 17 00:00:00 2001
From: Egbert Eich <eich@suse.de>
Date: Sun, 14 Oct 2012 15:46:38 +0200
Subject: [PATCH] --- yaml --- r: 334704 b: refs/heads/master c:
 5f85f176c2f1c9d2a23f60ca0b99e4d0aa5a26a7 h: refs/heads/master v: v3

---
 [refs]                                     |  2 +-
 trunk/drivers/gpu/drm/i915/intel_display.c | 32 ++++++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 1bdbcafcd4d5..a02276483ecc 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6478d414fe4ee3114e760fb6d6df0f8e2f66186a
+refs/heads/master: 5f85f176c2f1c9d2a23f60ca0b99e4d0aa5a26a7
diff --git a/trunk/drivers/gpu/drm/i915/intel_display.c b/trunk/drivers/gpu/drm/i915/intel_display.c
index 3511effa01ec..68495da433e6 100644
--- a/trunk/drivers/gpu/drm/i915/intel_display.c
+++ b/trunk/drivers/gpu/drm/i915/intel_display.c
@@ -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 */