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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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317b3c2167
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>
35 lines
792 B
C
35 lines
792 B
C
#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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#ifdef CONFIG_SUN3
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static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
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unsigned long off)
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{
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pgprot_val(vma->vm_page_prot) |= SUN3_PAGE_NOCACHE;
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}
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#else
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static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
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unsigned long off)
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{
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if (CPU_IS_020_OR_030)
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pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE030;
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if (CPU_IS_040_OR_060) {
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pgprot_val(vma->vm_page_prot) &= _CACHEMASK040;
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/* Use no-cache mode, serialized */
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pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE_S;
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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_ */
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