From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?=
 <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 arch/x86/video/Makefile |  1 +
 arch/x86/video/fbdev.c  | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 arch/x86/video/Makefile
 create mode 100644 arch/x86/video/fbdev.c

(limited to 'arch/x86/video')

diff --git a/arch/x86/video/Makefile b/arch/x86/video/Makefile
new file mode 100644
index 000000000..2c447c94a
--- /dev/null
+++ b/arch/x86/video/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_FB)               += fbdev.o
diff --git a/arch/x86/video/fbdev.c b/arch/x86/video/fbdev.c
new file mode 100644
index 000000000..d5644bbe8
--- /dev/null
+++ b/arch/x86/video/fbdev.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ */
+#include <linux/fb.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/vgaarb.h>
+
+int fb_is_primary_device(struct fb_info *info)
+{
+	struct device *device = info->device;
+	struct pci_dev *pci_dev = NULL;
+	struct pci_dev *default_device = vga_default_device();
+	struct resource *res = NULL;
+
+	if (device)
+		pci_dev = to_pci_dev(device);
+
+	if (!pci_dev)
+		return 0;
+
+	if (default_device) {
+		if (pci_dev == default_device)
+			return 1;
+		else
+			return 0;
+	}
+
+	res = &pci_dev->resource[PCI_ROM_RESOURCE];
+
+	if (res && res->flags & IORESOURCE_ROM_SHADOW)
+		return 1;
+
+	return 0;
+}
+EXPORT_SYMBOL(fb_is_primary_device);
+MODULE_LICENSE("GPL");
-- 
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