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video: fbmon: add HDMI dectetion to fbmod edid parsing

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Looks for ieee registration numver 0x000c03 as per HDMI spec.

Change-Id: I6875b24c66e8754510edabcb4f9ba682a50d6ac1
Signed-off-by: Erik Gilling <konkers@android.com>
This commit is contained in:
Erik Gilling
2011-02-06 19:32:17 -08:00
parent 4a6469b9eb
commit cef13d98eb
2 changed files with 9 additions and 0 deletions
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7
drivers/video/fbmon.c
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@@ -1018,6 +1018,13 @@ void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs)
num++;
}
}
} else if (tag == 0x3) {
if (len >= 3) {
u32 ieee_reg = block[0] | (block[1] << 8) |
(block[2] << 16);
if (ieee_reg == 0x000c03)
specs->misc |= FB_MISC_HDMI;
}
}
block += len;

2
include/linux/fb.h
View File

@@ -437,6 +437,8 @@ struct file;
#define FB_MISC_PRIM_COLOR 1
#define FB_MISC_1ST_DETAIL 2 /* First Detailed Timing is preferred */
#define FB_MISC_HDMI 4 /* display supports HDMI signaling */
struct fb_chroma {
__u32 redx; /* in fraction of 1024 */
__u32 greenx;