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drm/modes: Fix CVT-R modeline generation

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Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=16651

Signed-off-by: Adam Jackson <ajax@redhat.com>
Tested-by: Adam Serbinski <adam@serbinksi.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Adam Jackson 2010-08-23 10:19:14 -04:00 committed by Dave Airlie
parent 08f2e669a8
commit adde0f2339
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/drm_modes.c
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@ -251,7 +251,10 @@ struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay,
drm_mode->htotal = drm_mode->hdisplay + CVT_RB_H_BLANK;
/* Fill in HSync values */
drm_mode->hsync_end = drm_mode->hdisplay + CVT_RB_H_BLANK / 2;
drm_mode->hsync_start = drm_mode->hsync_end = CVT_RB_H_SYNC;
drm_mode->hsync_start = drm_mode->hsync_end - CVT_RB_H_SYNC;
/* Fill in VSync values */
drm_mode->vsync_start = drm_mode->vdisplay + CVT_RB_VFPORCH;
drm_mode->vsync_end = drm_mode->vsync_start + vsync;
}
/* 15/13. Find pixel clock frequency (kHz for xf86) */
drm_mode->clock = drm_mode->htotal * HV_FACTOR * 1000 / hperiod;