[PATCH v6 1/5] drm: Add function to convert rect in 16.16 fixed format to regular format

[José Roberto de Souza]

Much more clear to read one function call than four lines doing this
conversion.

Cc: dri-devel at lists.freedesktop.org
Cc: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
 drivers/gpu/drm/drm_rect.c | 15 +++++++++++++++
 include/drm/drm_rect.h     |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/drm_rect.c b/drivers/gpu/drm/drm_rect.c
index 0460e874896e..24345704b353 100644
--- a/drivers/gpu/drm/drm_rect.c
+++ b/drivers/gpu/drm/drm_rect.c
@@ -373,3 +373,18 @@ void drm_rect_rotate_inv(struct drm_rect *r,
 	}
 }
 EXPORT_SYMBOL(drm_rect_rotate_inv);
+
+/**
+ * drm_rect_convert_16_16_to_regular - Convert a rect in 16.16 fixed point form
+ * to regular form.
+ * @in: rect in 16.16 fixed point form
+ * @out: rect to be stored the converted value
+ */
+void drm_rect_convert_16_16_to_regular(struct drm_rect *in, struct drm_rect *out)
+{
+	out->x1 = in->x1 >> 16;
+	out->y1 = in->y1 >> 16;
+	out->x2 = in->x2 >> 16;
+	out->y2 = in->y2 >> 16;
+}
+EXPORT_SYMBOL(drm_rect_convert_16_16_to_regular);
diff --git a/include/drm/drm_rect.h b/include/drm/drm_rect.h
index e7f4d24cdd00..2ef8180416cd 100644
--- a/include/drm/drm_rect.h
+++ b/include/drm/drm_rect.h
@@ -223,5 +223,7 @@ void drm_rect_rotate(struct drm_rect *r,
 void drm_rect_rotate_inv(struct drm_rect *r,
 			 int width, int height,
 			 unsigned int rotation);
+void drm_rect_convert_16_16_to_regular(struct drm_rect *in,
+				       struct drm_rect *out);
 
 #endif
-- 
2.29.2