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drm/fb: Fix video= mode computation 

Reduced blanking is valid only when doing CVT modes.  Also, generate GTF
modes unless CVT was requested; CVT devices are required to support GTF,
but the reverse is not true.

[airlied: fix typo]

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Adam Jackson 2010-06-10 13:33:26 -04:00 committed by Dave Airlie
parent a5f798ce2b
commit b829e011f6
1 changed files with 13 additions and 6 deletions
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19
drivers/gpu/drm/drm_fb_helper.c
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@ -146,7 +146,7 @@ static bool drm_fb_helper_connector_parse_command_line(struct drm_fb_helper_conn
cvt = 1;
break;
case 'R':
if (!cvt)
if (cvt)
rb = 1;
break;
case 'm':
@ -1024,11 +1024,18 @@ static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_conne
}
create_mode:
mode = drm_cvt_mode(fb_helper_conn->connector->dev, cmdline_mode->xres,
cmdline_mode->yres,
cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60,
cmdline_mode->rb, cmdline_mode->interlace,
cmdline_mode->margins);
if (cmdline_mode->cvt)
mode = drm_cvt_mode(fb_helper_conn->connector->dev,
cmdline_mode->xres, cmdline_mode->yres,
cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60,
cmdline_mode->rb, cmdline_mode->interlace,
cmdline_mode->margins);
else
mode = drm_gtf_mode(fb_helper_conn->connector->dev,
cmdline_mode->xres, cmdline_mode->yres,
cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60,
cmdline_mode->interlace,
cmdline_mode->margins);
drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
list_add(&mode->head, &fb_helper_conn->connector->modes);
return mode;