diff options
| -rw-r--r-- | arch/i386/boot/video.S | 2 | ||||
| -rw-r--r-- | arch/i386/kernel/setup.c | 1 | ||||
| -rw-r--r-- | drivers/video/fbmon.c | 35 | ||||
| -rw-r--r-- | include/linux/fb.h | 4 |
4 files changed, 39 insertions, 3 deletions
diff --git a/arch/i386/boot/video.S b/arch/i386/boot/video.S index 02bf625a681..92f66947014 100644 --- a/arch/i386/boot/video.S +++ b/arch/i386/boot/video.S @@ -1949,7 +1949,7 @@ store_edid: movw $0x4f15, %ax # do VBE/DDC movw $0x01, %bx movw $0x00, %cx - movw $0x01, %dx + movw $0x00, %dx movw $0x140, %di int $0x10 diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c index a659d274914..fa0c69eb937 100644 --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -139,6 +139,7 @@ struct sys_desc_table_struct { unsigned char table[0]; }; struct edid_info edid_info; +EXPORT_SYMBOL_GPL(edid_info); struct ist_info ist_info; #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) diff --git a/drivers/video/fbmon.c b/drivers/video/fbmon.c index c2718bb9494..791bec3d672 100644 --- a/drivers/video/fbmon.c +++ b/drivers/video/fbmon.c @@ -29,6 +29,7 @@ #include <linux/tty.h> #include <linux/fb.h> #include <linux/module.h> +#include <video/edid.h> #ifdef CONFIG_PPC_OF #include <linux/pci.h> #include <asm/prom.h> @@ -1251,9 +1252,41 @@ int fb_validate_mode(const struct fb_var_screeninfo *var, struct fb_info *info) -EINVAL : 0; } +#if defined(__i386__) +#include <linux/pci.h> + +/* + * We need to ensure that the EDID block is only returned for + * the primary graphics adapter. + */ + +const unsigned char *fb_firmware_edid(struct device *device) +{ + struct pci_dev *dev = NULL; + struct resource *res = NULL; + unsigned char *edid = NULL; + + if (device) + dev = to_pci_dev(device); + + if (dev) + res = &dev->resource[PCI_ROM_RESOURCE]; + + if (res && res->flags & IORESOURCE_ROM_SHADOW) + edid = edid_info.dummy; + + return edid; +} +#else +const unsigned char *fb_firmware_edid(struct device *device) +{ + return NULL; +} +#endif /* _i386_ */ + EXPORT_SYMBOL(fb_parse_edid); EXPORT_SYMBOL(fb_edid_to_monspecs); - +EXPORT_SYMBOL(fb_firmware_edid); EXPORT_SYMBOL(fb_get_mode); EXPORT_SYMBOL(fb_validate_mode); EXPORT_SYMBOL(fb_destroy_modedb); diff --git a/include/linux/fb.h b/include/linux/fb.h index 70da819df0f..e3e16f43b1b 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -859,7 +859,9 @@ extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, extern int fb_validate_mode(const struct fb_var_screeninfo *var, struct fb_info *info); extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var); -extern void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs); +extern const unsigned char *fb_firmware_edid(struct device *device); +extern void fb_edid_to_monspecs(unsigned char *edid, + struct fb_monspecs *specs); extern void fb_destroy_modedb(struct fb_videomode *modedb); /* drivers/video/modedb.c */ |