[v10,1/5] drm: Add function to convert rect in 16.16 fixed format to regular format

Commit Message

Gwan-gyeong Mun Jan. 4, 2021, 11:58 a.m. UTC

From: José Roberto de Souza <[e-mail]>

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

v7:
- function renamed
- calculating width and height before truncate
- inlined

Cc: Ville Syrjälä <[e-mail]>
Cc: [e-mail]
Cc: Gwan-gyeong Mun <[e-mail]>
Signed-off-by: José Roberto de Souza <[e-mail]>
Reviewed-by: Gwan-gyeong Mun <[e-mail]>
---
 include/drm/drm_rect.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

Patch

diff --git a/include/drm/drm_rect.h b/include/drm/drm_rect.h
index e7f4d24cdd00..7eb84af4a818 100644
--- a/include/drm/drm_rect.h
+++ b/include/drm/drm_rect.h
@@ -206,6 +206,19 @@  static inline bool drm_rect_equals(const struct drm_rect *r1,
 		r1->y1 == r2->y1 && r1->y2 == r2->y2;
 }
 
+/**
+ * drm_rect_fp_to_int - Convert a rect in 16.16 fixed point form to int form.
+ * @destination: rect to be stored the converted value
+ * @source: rect in 16.16 fixed point form
+ */
+static inline void drm_rect_fp_to_int(struct drm_rect *destination,
+				      const struct drm_rect *source)
+{
+	drm_rect_init(destination, source->x1 >> 16, source->y1 >> 16,
+		      drm_rect_width(source) >> 16,
+		      drm_rect_height(source) >> 16);
+}
+
 bool drm_rect_intersect(struct drm_rect *r, const struct drm_rect *clip);
 bool drm_rect_clip_scaled(struct drm_rect *src, struct drm_rect *dst,
 			  const struct drm_rect *clip);