tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
fbdev: detect primary display device
Add function helper, fb_is_primary_device(). Given struct fb_info, it will
return a nonzero value if the device is the primary display.
Currently, only the i386 is supported where the function checks for the
IORESOURCE_ROM_SHADOW flag.
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
authored by
Antonino A. Daplas
and committed by
Linus Torvalds
317b3c21
10eb2659
+177
-1
+1
arch/i386/Makefile
+1
arch/i386/Makefile
+1
arch/i386/video/Makefile
+1
arch/i386/video/Makefile
···
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obj-$(CONFIG_FB) += fbdev.o
+34
arch/i386/video/fbdev.c
+34
arch/i386/video/fbdev.c
···
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/*
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* arch/i386/video/fbdev.c - i386 Framebuffer
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*
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* Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*
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*/
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#include <linux/fb.h>
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#include <linux/pci.h>
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int fb_is_primary_device(struct fb_info *info)
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{
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struct device *device;
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struct pci_dev *pci_dev = NULL;
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struct resource *res = NULL;
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int retval = 0;
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device = info->device;
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+
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if (device)
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pci_dev = to_pci_dev(device);
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+
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if (pci_dev)
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res = &pci_dev->resource[PCI_ROM_RESOURCE];
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if (res && res->flags & IORESOURCE_ROM_SHADOW)
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retval = 1;
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return retval;
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}
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EXPORT_SYMBOL(fb_is_primary_device);
+6
include/asm-alpha/fb.h
+6
include/asm-alpha/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/device.h>
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/* Caching is off in the I/O space quadrant by design. */
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#define fb_pgprotect(...) do {} while (0)
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-arm/fb.h
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include/asm-arm/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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unsigned long off)
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{
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vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-arm26/fb.h
+6
include/asm-arm26/fb.h
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include/asm-avr32/fb.h
+6
include/asm-avr32/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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vma->vm_page_prot = __pgprot((pgprot_val(vma->vm_page_prot)
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& ~_PAGE_CACHABLE)
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| (_PAGE_BUFFER | _PAGE_DIRTY));
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-blackfin/fb.h
+6
include/asm-blackfin/fb.h
+6
include/asm-cris/fb.h
+6
include/asm-cris/fb.h
+6
include/asm-frv/fb.h
+6
include/asm-frv/fb.h
+6
include/asm-h8300/fb.h
+6
include/asm-h8300/fb.h
+3
include/asm-i386/fb.h
+3
include/asm-i386/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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extern int fb_is_primary_device(struct fb_info *info);
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static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
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unsigned long off)
+6
include/asm-ia64/fb.h
+6
include/asm-ia64/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <linux/efi.h>
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#include <asm/page.h>
···
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vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
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else
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-m32r/fb.h
+6
include/asm-m32r/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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unsigned long off)
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{
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vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-m68k/fb.h
+6
include/asm-m68k/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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#include <asm/setup.h>
···
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}
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}
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#endif /* CONFIG_SUN3 */
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-m68knommu/fb.h
+6
include/asm-m68knommu/fb.h
+6
include/asm-mips/fb.h
+6
include/asm-mips/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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unsigned long off)
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{
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-parisc/fb.h
+6
include/asm-parisc/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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unsigned long off)
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{
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pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE;
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-powerpc/fb.h
+6
include/asm-powerpc/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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vma->vm_page_prot = phys_mem_access_prot(file, off >> PAGE_SHIFT,
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vma->vm_end - vma->vm_start,
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vma->vm_page_prot);
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-s390/fb.h
+6
include/asm-s390/fb.h
+6
include/asm-sh/fb.h
+6
include/asm-sh/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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unsigned long off)
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{
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vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-sh64/fb.h
+6
include/asm-sh64/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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unsigned long off)
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{
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vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-sparc/fb.h
+6
include/asm-sparc/fb.h
+6
include/asm-sparc64/fb.h
+6
include/asm-sparc64/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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unsigned long off)
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{
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
+6
include/asm-v850/fb.h
+6
include/asm-v850/fb.h
+6
-1
include/asm-x86_64/fb.h
+6
-1
include/asm-x86_64/fb.h
···
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#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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-
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <asm/page.h>
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···
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{
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if (boot_cpu_data.x86 > 3)
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pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */