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>
diff --git a/include/asm-alpha/fb.h b/include/asm-alpha/fb.h
index ca714a4..fa9bbb9 100644
--- a/include/asm-alpha/fb.h
+++ b/include/asm-alpha/fb.h
@@ -1,7 +1,13 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/device.h>
/* Caching is off in the I/O space quadrant by design. */
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-arm/fb.h b/include/asm-arm/fb.h
index 4bf5b88..d92e99c 100644
--- a/include/asm-arm/fb.h
+++ b/include/asm-arm/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -10,4 +11,9 @@
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-arm26/fb.h b/include/asm-arm26/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-arm26/fb.h
+++ b/include/asm-arm26/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-avr32/fb.h b/include/asm-avr32/fb.h
index d22a4a8..41baf84 100644
--- a/include/asm-avr32/fb.h
+++ b/include/asm-avr32/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -12,4 +13,9 @@
| (_PAGE_BUFFER | _PAGE_DIRTY));
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-blackfin/fb.h b/include/asm-blackfin/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-blackfin/fb.h
+++ b/include/asm-blackfin/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-cris/fb.h b/include/asm-cris/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-cris/fb.h
+++ b/include/asm-cris/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-frv/fb.h b/include/asm-frv/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-frv/fb.h
+++ b/include/asm-frv/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-h8300/fb.h b/include/asm-h8300/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-h8300/fb.h
+++ b/include/asm-h8300/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-i386/fb.h b/include/asm-i386/fb.h
index d30073c..d1c6297 100644
--- a/include/asm-i386/fb.h
+++ b/include/asm-i386/fb.h
@@ -1,9 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
+extern int fb_is_primary_device(struct fb_info *info);
+
static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
unsigned long off)
{
diff --git a/include/asm-ia64/fb.h b/include/asm-ia64/fb.h
index 9d4577f..89a397c 100644
--- a/include/asm-ia64/fb.h
+++ b/include/asm-ia64/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <linux/efi.h>
#include <asm/page.h>
@@ -14,4 +15,9 @@
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-m32r/fb.h b/include/asm-m32r/fb.h
index 4bf5b88..d92e99c 100644
--- a/include/asm-m32r/fb.h
+++ b/include/asm-m32r/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -10,4 +11,9 @@
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-m68k/fb.h b/include/asm-m68k/fb.h
index f78bad4..380b97a 100644
--- a/include/asm-m68k/fb.h
+++ b/include/asm-m68k/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
#include <asm/setup.h>
@@ -25,4 +26,9 @@
}
#endif /* CONFIG_SUN3 */
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-m68knommu/fb.h b/include/asm-m68knommu/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-m68knommu/fb.h
+++ b/include/asm-m68knommu/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-mips/fb.h b/include/asm-mips/fb.h
index ac23d96..bd3f68c 100644
--- a/include/asm-mips/fb.h
+++ b/include/asm-mips/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -10,4 +11,9 @@
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-parisc/fb.h b/include/asm-parisc/fb.h
index d5e47ed..4d503a0 100644
--- a/include/asm-parisc/fb.h
+++ b/include/asm-parisc/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -10,4 +11,9 @@
pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE;
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-powerpc/fb.h b/include/asm-powerpc/fb.h
index e13d6eb..411af8d 100644
--- a/include/asm-powerpc/fb.h
+++ b/include/asm-powerpc/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -12,4 +13,9 @@
vma->vm_page_prot);
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-s390/fb.h b/include/asm-s390/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-s390/fb.h
+++ b/include/asm-s390/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-sh/fb.h b/include/asm-sh/fb.h
index 4bf5b88..d92e99c 100644
--- a/include/asm-sh/fb.h
+++ b/include/asm-sh/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -10,4 +11,9 @@
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-sh64/fb.h b/include/asm-sh64/fb.h
index 4bf5b88..d92e99c 100644
--- a/include/asm-sh64/fb.h
+++ b/include/asm-sh64/fb.h
@@ -1,6 +1,7 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -10,4 +11,9 @@
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-sparc/fb.h b/include/asm-sparc/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-sparc/fb.h
+++ b/include/asm-sparc/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-sparc64/fb.h b/include/asm-sparc64/fb.h
index 8703c70..d6cd3a1 100644
--- a/include/asm-sparc64/fb.h
+++ b/include/asm-sparc64/fb.h
@@ -1,5 +1,6 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -9,4 +10,9 @@
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-v850/fb.h b/include/asm-v850/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-v850/fb.h
+++ b/include/asm-v850/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-x86_64/fb.h b/include/asm-x86_64/fb.h
index d30073c..60548e6 100644
--- a/include/asm-x86_64/fb.h
+++ b/include/asm-x86_64/fb.h
@@ -1,6 +1,6 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
-
+#include <linux/fb.h>
#include <linux/fs.h>
#include <asm/page.h>
@@ -11,4 +11,9 @@
pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
}
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */
diff --git a/include/asm-xtensa/fb.h b/include/asm-xtensa/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-xtensa/fb.h
+++ b/include/asm-xtensa/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */