[103/141] powerpc: Set default VGA device

[Steven Rostedt]

3.6.11.6 stable review patch.
If anyone has any objections, please let me know.

------------------

From: Brian King <brking@xxxxxxxxxxxxxxxxxx>

[ Upstream commit c2e1d84523ad2a19e5be08c1f01999cc9e82652e ]

Add a PCI quirk for VGA devices on Power to set the default VGA device.
Ensures a default VGA is always set if a graphics adapter is present,
even if firmware did not initialize it. If more than one graphics
adapter is present, ensure the one initialized by firmware is set
as the default VGA device. This ensures that X autoconfiguration
will work.

Signed-off-by: Brian King <brking@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <michael@xxxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
 arch/powerpc/kernel/pci-common.c |   13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 2aa04f2..51ecf87 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -30,6 +30,7 @@
 #include <linux/irq.h>
 #include <linux/vmalloc.h>
 #include <linux/slab.h>
+#include <linux/vgaarb.h>
 
 #include <asm/processor.h>
 #include <asm/io.h>
@@ -1698,3 +1699,15 @@ static void fixup_hide_host_resource_fsl(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MOTOROLA, PCI_ANY_ID, fixup_hide_host_resource_fsl);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, fixup_hide_host_resource_fsl);
+
+static void fixup_vga(struct pci_dev *pdev)
+{
+	u16 cmd;
+
+	pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+	if ((cmd & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) || !vga_default_device())
+		vga_set_default_device(pdev);
+
+}
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
+			      PCI_CLASS_DISPLAY_VGA, 8, fixup_vga);
-- 
1.7.10.4


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