ENGR00323172 EPDC: there will be garbage when doing rotation unit test

Just as what the V4L2 PXP does, we should pass the drect
w/h and output w/h accroding to the rotation angle.

Signed-off-by: Fancy Fang <chen.fang@freescale.com>
(cherry picked from commit bf95e3ee4131ce3ee78050f098704588766e8b07)

1 files changed, 13 insertions, 8 deletions

diff --git a/drivers/video/mxc/mxc_epdc_fb.c b/drivers/video/mxc/mxc_epdc_fb.c
index e536e781db9e..6d4afe5e4cb7 100644
--- a/drivers/video/mxc/mxc_epdc_fb.c
+++ b/drivers/video/mxc/mxc_epdc_fb.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
+ * Copyright (C) 2010-2014 Freescale Semiconductor, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -5330,21 +5330,26 @@ static int pxp_process_update(struct mxc_epdc_fb_data *fb_data,
          */
         proc_data->drect.top = 0;
         proc_data->drect.left = 0;
-        proc_data->drect.width = proc_data->srect.width;
-        proc_data->drect.height = proc_data->srect.height;
 
         /* PXP expects rotation in terms of degrees */
         proc_data->rotate = fb_data->epdc_fb_var.rotate * 90;
         if (proc_data->rotate > 270)
                 proc_data->rotate = 0;
 
-        pxp_conf->out_param.width = update_region->width;
-        pxp_conf->out_param.height = update_region->height;
-
-        if ((proc_data->rotate == 90) || (proc_data->rotate == 270))
+        /* Just as V4L2 PXP, we should pass the rotated values to PXP */
+        if ((proc_data->rotate == 90) || (proc_data->rotate == 270)) {
+                proc_data->drect.width = proc_data->srect.height;
+                proc_data->drect.height = proc_data->srect.width;
+                pxp_conf->out_param.width = update_region->height;
+                pxp_conf->out_param.height = update_region->width;
                 pxp_conf->out_param.stride = update_region->height;
-        else
+        } else {
+                proc_data->drect.width = proc_data->srect.width;
+                proc_data->drect.height = proc_data->srect.height;
+                pxp_conf->out_param.width = update_region->width;
+                pxp_conf->out_param.height = update_region->height;
                 pxp_conf->out_param.stride = update_region->width;
+        }
 
         /* For EPDC v2.0, we need output to be 64-bit
          * aligned since EPDC stride does not work. */