fbmon: fix EDID parser to detect interlace modes

The current EDID parser in the linux kernel ignores interlace modes.  The
patch looks for the edid interlace flag and adjusts the vertical
resolution if it is found.

Signed-off-by: Jon Dufresne <jon.dufresne@gmail.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/video/fbmon.c b/drivers/video/fbmon.c
index 6a0aa180c266e0b3d03e8cc2a4dc890f1605d329..5c1a2c01778fe6e195df9405d0409d7a1a2a09f9 100644 (file)
--- a/drivers/video/fbmon.c
+++ b/drivers/video/fbmon.c
@@ -564,7 +564,13 @@ static void get_detailed_timing(unsigned char *block,
                mode->sync |= FB_SYNC_VERT_HIGH_ACT;
        mode->refresh = PIXEL_CLOCK/((H_ACTIVE + H_BLANKING) *
                                     (V_ACTIVE + V_BLANKING));
-       mode->vmode = 0;
+       if (INTERLACED) {
+               mode->yres *= 2;
+               mode->upper_margin *= 2;
+               mode->lower_margin *= 2;
+               mode->vsync_len *= 2;
+               mode->vmode |= FB_VMODE_INTERLACED;
+       }
        mode->flag = FB_MODE_IS_DETAILED;
 
        DPRINTK("      %d MHz ",  PIXEL_CLOCK/1000000);