[PATCH v2] media: atomisp: replace ia_css_region with v4l2_rect

[Karthikey Kadati <karthikey3608@gmail.com>]

From: Karthikey D Kadati <karthikey3608@gmail.com>

The struct ia_css_region definition is redundant as struct v4l2_rect
provides the same functionality (left, top, width, height) and is the
standard V4L2 type.

Replace usage of ia_css_region with v4l2_rect in ia_css_dz_config
and remove the definition of ia_css_region from ia_css_types.h.

Also remove historical comments referencing the addition of zoom_region
and include <linux/videodev2.h> to support the v4l2_rect type.

Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
---
Changes in v2:
- Replaced ia_css_region with v4l2_rect in ia_css_types.h.
- Removed definition of ia_css_region.
- Removed historical comments about zoom_region.
- Verified atomisp_cmd.c logic is safe with the type change.
- Updated commit message for clarity and conciseness.

 drivers/staging/media/atomisp/pci/ia_css_types.h | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/ia_css_types.h b/drivers/staging/media/atomisp/pci/ia_css_types.h
index 5c21a5415..f7b77901e 100644
--- a/drivers/staging/media/atomisp/pci/ia_css_types.h
+++ b/drivers/staging/media/atomisp/pci/ia_css_types.h
@@ -15,6 +15,7 @@
  * directly but still need to forward parameters for it.
  */
 
+#include <linux/videodev2.h>
 #include <type_support.h>
 
 #include "ia_css_frac.h"
@@ -427,16 +428,6 @@ struct ia_css_point {
 	s32 y; /** y coordinate */
 };
 
-/**
- * This specifies the region
- */
-struct ia_css_region {
-	s32 left; /** Starting point coordinates for the region */
-	s32 top;
-	s32 width; /** Region resolution */
-	s32 height;
-};
-
 /**
  * Digital zoom:
  * This feature is currently available only for video, but will become
@@ -444,7 +435,7 @@ struct ia_css_region {
  * Set the digital zoom factor, this is a logarithmic scale. The actual zoom
  * factor will be 64/x.
  * Setting dx or dy to 0 disables digital zoom for that direction.
- * New API change for Digital zoom:(added struct ia_css_region zoom_region)
+ *
  * zoom_region specifies the origin of the zoom region and width and
  * height of that region.
  * origin : This is the coordinate (x,y) within the effective input resolution
@@ -457,7 +448,7 @@ struct ia_css_region {
 struct ia_css_dz_config {
 	u32 dx; /** Horizontal zoom factor */
 	u32 dy; /** Vertical zoom factor */
-	struct ia_css_region zoom_region; /** region for zoom */
+	struct v4l2_rect zoom_region; /** region for zoom */
 };
 
 /* The still capture mode, this can be RAW (simply copy sensor input to DDR),
-- 
2.43.0