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b4aa016305
EFI doesn't typically make use of the legacy VGA ROM, but it may still be configured to pass that through to a given video device. This may lead to an inaccurate choice of default video device. Add support to efifb to pick out the correct active video device. v2: fix if->ifdef Signed-off-by: Matthew Garrett <mjg@redhat.com> Acked-by: hpa@zytor.com Cc: matt.fleming@intel.com Signed-off-by: Dave Airlie <airlied@redhat.com>
27 lines
570 B
C
27 lines
570 B
C
/*
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* Access to VGA videoram
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*
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* (c) 1998 Martin Mares <mj@ucw.cz>
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*/
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#ifndef _ASM_X86_VGA_H
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#define _ASM_X86_VGA_H
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/*
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* On the PC, we can just recalculate addresses and then
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* access the videoram directly without any black magic.
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*/
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#define VGA_MAP_MEM(x, s) (unsigned long)phys_to_virt(x)
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#define vga_readb(x) (*(x))
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#define vga_writeb(x, y) (*(y) = (x))
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#ifdef CONFIG_FB_EFI
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#define __ARCH_HAS_VGA_DEFAULT_DEVICE
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extern struct pci_dev *vga_default_device(void);
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extern void vga_set_default_device(struct pci_dev *pdev);
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#endif
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#endif /* _ASM_X86_VGA_H */
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