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drm/exynos: Fix fb_videomode <-> drm_mode_modeinfo conversion 

The fb_videomode structure stores the front porch and back porch in the
right_margin and left_margin fields respectively. right_margin should
thus be computed with hsync_start - hdisplay, and left_margin with
htotal - hsync_end. The same holds for the vertical direction.

       Active               Front           Sync            Back
       Region               Porch                           Porch
<-------------------><----------------><-------------><---------------->

  //////////////////|
 ////////////////// |
//////////////////  |..................               ..................
                                       _______________

<------ xres -------><- right_margin -><- hsync_len -><- left_margin -->

<---- hdisplay ----->
<------------ hsync_start ------------>
<--------------------- hsync_end -------------------->
<--------------------------------- htotal ----------------------------->

Fix the fb_videomode <-> drm_mode_modeinfo conversion functions
accordingly.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
Laurent Pinchart 2012-03-09 09:45:21 +09:00 committed by Inki Dae
parent 0d8ce3ae37
commit f7d86075fa
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/drm/exynos/exynos_drm_connector.c
View File

@ -54,14 +54,14 @@ convert_to_display_mode(struct drm_display_mode *mode,
mode->vrefresh = timing->refresh;
mode->hdisplay = timing->xres;
mode->hsync_start = mode->hdisplay + timing->left_margin;
mode->hsync_start = mode->hdisplay + timing->right_margin;
mode->hsync_end = mode->hsync_start + timing->hsync_len;
mode->htotal = mode->hsync_end + timing->right_margin;
mode->htotal = mode->hsync_end + timing->left_margin;
mode->vdisplay = timing->yres;
mode->vsync_start = mode->vdisplay + timing->upper_margin;
mode->vsync_start = mode->vdisplay + timing->lower_margin;
mode->vsync_end = mode->vsync_start + timing->vsync_len;
mode->vtotal = mode->vsync_end + timing->lower_margin;
mode->vtotal = mode->vsync_end + timing->upper_margin;
mode->width_mm = panel->width_mm;
mode->height_mm = panel->height_mm;
@ -85,14 +85,14 @@ convert_to_video_timing(struct fb_videomode *timing,
timing->refresh = drm_mode_vrefresh(mode);
timing->xres = mode->hdisplay;
timing->left_margin = mode->hsync_start - mode->hdisplay;
timing->right_margin = mode->hsync_start - mode->hdisplay;
timing->hsync_len = mode->hsync_end - mode->hsync_start;
timing->right_margin = mode->htotal - mode->hsync_end;
timing->left_margin = mode->htotal - mode->hsync_end;
timing->yres = mode->vdisplay;
timing->upper_margin = mode->vsync_start - mode->vdisplay;
timing->lower_margin = mode->vsync_start - mode->vdisplay;
timing->vsync_len = mode->vsync_end - mode->vsync_start;
timing->lower_margin = mode->vtotal - mode->vsync_end;
timing->upper_margin = mode->vtotal - mode->vsync_end;
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
timing->vmode = FB_VMODE_INTERLACED;