Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=317b3c2167f5326a7de30a1abe50c9897da7a0e3
Commit:     317b3c2167f5326a7de30a1abe50c9897da7a0e3
Parent:     10eb2659cc6059d0c4de2e2c66d1534091519f56
Author:     Antonino A. Daplas <[EMAIL PROTECTED]>
AuthorDate: Tue Jul 17 04:05:28 2007 -0700
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue Jul 17 10:23:11 2007 -0700

    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 <[EMAIL PROTECTED]>
    Cc: David Miller <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
 arch/i386/Makefile         |    1 +
 arch/i386/video/Makefile   |    1 +
 arch/i386/video/fbdev.c    |   34 ++++++++++++++++++++++++++++++++++
 include/asm-alpha/fb.h     |    6 ++++++
 include/asm-arm/fb.h       |    6 ++++++
 include/asm-arm26/fb.h     |    6 ++++++
 include/asm-avr32/fb.h     |    6 ++++++
 include/asm-blackfin/fb.h  |    6 ++++++
 include/asm-cris/fb.h      |    6 ++++++
 include/asm-frv/fb.h       |    6 ++++++
 include/asm-h8300/fb.h     |    6 ++++++
 include/asm-i386/fb.h      |    3 +++
 include/asm-ia64/fb.h      |    6 ++++++
 include/asm-m32r/fb.h      |    6 ++++++
 include/asm-m68k/fb.h      |    6 ++++++
 include/asm-m68knommu/fb.h |    6 ++++++
 include/asm-mips/fb.h      |    6 ++++++
 include/asm-parisc/fb.h    |    6 ++++++
 include/asm-powerpc/fb.h   |    6 ++++++
 include/asm-s390/fb.h      |    6 ++++++
 include/asm-sh/fb.h        |    6 ++++++
 include/asm-sh64/fb.h      |    6 ++++++
 include/asm-sparc/fb.h     |    6 ++++++
 include/asm-sparc64/fb.h   |    6 ++++++
 include/asm-v850/fb.h      |    6 ++++++
 include/asm-x86_64/fb.h    |    7 ++++++-
 include/asm-xtensa/fb.h    |    6 ++++++
 27 files changed, 177 insertions(+), 1 deletions(-)

diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index bd28f9f..181cc29 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -108,6 +108,7 @@ drivers-$(CONFIG_PCI)                       += 
arch/i386/pci/
 # must be linked after kernel/
 drivers-$(CONFIG_OPROFILE)             += arch/i386/oprofile/
 drivers-$(CONFIG_PM)                   += arch/i386/power/
+drivers-$(CONFIG_FB)                    += arch/i386/video/
 
 CFLAGS += $(mflags-y)
 AFLAGS += $(mflags-y)
diff --git a/arch/i386/video/Makefile b/arch/i386/video/Makefile
new file mode 100644
index 0000000..2c447c9
--- /dev/null
+++ b/arch/i386/video/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_FB)               += fbdev.o
diff --git a/arch/i386/video/fbdev.c b/arch/i386/video/fbdev.c
new file mode 100644
index 0000000..7fc712c
--- /dev/null
+++ b/arch/i386/video/fbdev.c
@@ -0,0 +1,34 @@
+/*
+ * arch/i386/video/fbdev.c - i386 Framebuffer
+ *
+ * Copyright (C) 2007 Antonino Daplas <[EMAIL PROTECTED]>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ */
+#include <linux/fb.h>
+#include <linux/pci.h>
+
+int fb_is_primary_device(struct fb_info *info)
+{
+       struct device *device;
+       struct pci_dev *pci_dev = NULL;
+       struct resource *res = NULL;
+       int retval = 0;
+
+       device = info->device;
+
+       if (device)
+               pci_dev = to_pci_dev(device);
+
+       if (pci_dev)
+               res = &pci_dev->resource[PCI_ROM_RESOURCE];
+
+       if (res && res->flags & IORESOURCE_ROM_SHADOW)
+               retval = 1;
+
+       return retval;
+}
+EXPORT_SYMBOL(fb_is_primary_device);
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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
        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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
                                     | (_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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
                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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
        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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
 }
 #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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
        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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
        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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
                                                 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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
        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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
        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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
        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 @@ static inline void fb_pgprotect(struct file *file, struct 
vm_area_struct *vma,
                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_ */
-
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