1 files changed, 60 insertions, 2 deletions

diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c
index 3edc9f49344b..47516c44a390 100644
--- a/drivers/video/modedb.c
+++ b/drivers/video/modedb.c
@@ -456,12 +456,22 @@ static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
  *
  *      Valid mode specifiers for @mode_option:
  *
- *      <xres>x<yres>[-<bpp>][@<refresh>] or
+ *      <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or
  *      <name>[-<bpp>][@<refresh>]
  *
  *      with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
  *      <name> a string.
  *
+ *      If 'M' is present after yres (and before refresh/bpp if present),
+ *      the function will compute the timings using VESA(tm) Coordinated
+ *      Video Timings (CVT).  If 'R' is present after 'M', will compute with
+ *      reduced blanking (for flatpanels).  If 'i' is present, compute
+ *      interlaced mode.  If 'm' is present, add margins equal to 1.8%
+ *      of xres rounded down to 8 pixels, and 1.8% of yres. The char
+ *      'i' and 'm' must be after 'M' and 'R'. Example:
+ *
+ *      1024x768MR-8@60m - Reduced blank with margins at 60Hz.
+ *
  *      NOTE: The passed struct @var is _not_ cleared!  This allows you
  *      to supply values for e.g. the grayscale and accel_flags fields.
  *
@@ -495,7 +505,7 @@ int fb_find_mode(struct fb_var_screeninfo *var,
         unsigned int namelen = strlen(name);
         int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
         unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
-        int yres_specified = 0;
+        int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0;
         u32 best, diff;
 
         for (i = namelen-1; i >= 0; i--) {
@@ -506,6 +516,8 @@ int fb_find_mode(struct fb_var_screeninfo *var,
                         !yres_specified) {
                         refresh = my_atoi(&name[i+1]);
                         refresh_specified = 1;
+                        if (cvt || rb)
+                            cvt = 0;
                     } else
                         goto done;
                     break;
@@ -514,6 +526,8 @@ int fb_find_mode(struct fb_var_screeninfo *var,
                     if (!bpp_specified && !yres_specified) {
                         bpp = my_atoi(&name[i+1]);
                         bpp_specified = 1;
+                        if (cvt || rb)
+                            cvt = 0;
                     } else
                         goto done;
                     break;
@@ -526,6 +540,22 @@ int fb_find_mode(struct fb_var_screeninfo *var,
                     break;
                 case '0'...'9':
                     break;
+                case 'M':
+                    if (!yres_specified)
+                        cvt = 1;
+                    break;
+                case 'R':
+                    if (!cvt)
+                        rb = 1;
+                    break;
+                case 'm':
+                    if (!cvt)
+                        margins = 1;
+                    break;
+                case 'i':
+                    if (!cvt)
+                        interlace = 1;
+                    break;
                 default:
                     goto done;
             }
@@ -535,6 +565,34 @@ int fb_find_mode(struct fb_var_screeninfo *var,
             res_specified = 1;
         }
 done:
+        if (cvt) {
+            struct fb_videomode cvt_mode;
+            int ret;
+
+            DPRINTK("CVT mode %dx%d@%dHz%s%s%s\n", xres, yres,
+                    (refresh) ? refresh : 60, (rb) ? " reduced blanking" :
+                    "", (margins) ? " with margins" : "", (interlace) ?
+                    " interlaced" : "");
+
+            cvt_mode.xres = xres;
+            cvt_mode.yres = yres;
+            cvt_mode.refresh = (refresh) ? refresh : 60;
+
+            if (interlace)
+                cvt_mode.vmode |= FB_VMODE_INTERLACED;
+            else
+                cvt_mode.vmode &= ~FB_VMODE_INTERLACED;
+
+            ret = fb_find_mode_cvt(&cvt_mode, margins, rb);
+
+            if (!ret && !fb_try_mode(var, info, &cvt_mode, bpp)) {
+                DPRINTK("modedb CVT: CVT mode ok\n");
+                return 1;
+            }
+
+            DPRINTK("CVT mode invalid, getting mode from database\n");
+        }
+
         DPRINTK("Trying specified video mode%s %ix%i\n",
             refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);