gpu: ipu-di: Add ipu_di_adjust_videomode()

On some monitors, high resolution modes are not working, exhibiting
pixel column truncation problems (for example, 1280x1024 displays as
1280x1022).

The function ipu_di_adjust_videomode() aims to fix these issues by
adjusting a passed videomode to IPU restrictions. The function can
be called from the drm_crtc_helper_funcs->mode_fixup() methods.

Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Deepak Das <deepak_das@mentor.com>
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h
index c74bf4a0520e..d333d54203a8 100644
--- a/include/video/imx-ipu-v3.h
+++ b/include/video/imx-ipu-v3.h
@@ -17,6 +17,7 @@
 #include <linux/bitmap.h>
 #include <linux/fb.h>
 #include <media/v4l2-mediabus.h>
+#include <video/videomode.h>
 
 struct ipu_soc;
 
@@ -236,6 +237,7 @@ void ipu_di_put(struct ipu_di *);
 int ipu_di_disable(struct ipu_di *);
 int ipu_di_enable(struct ipu_di *);
 int ipu_di_get_num(struct ipu_di *);
+int ipu_di_adjust_videomode(struct ipu_di *di, struct videomode *mode);
 int ipu_di_init_sync_panel(struct ipu_di *, struct ipu_di_signal_cfg *sig);
 
 /*