drm/fourcc: Pass the format_info pointer to drm_format_plane_cpp

So far, the drm_format_plane_cpp function was operating on the format's
fourcc and was doing a lookup to retrieve the drm_format_info structure and
return the cpp.

However, this is inefficient since in most cases, we will have the
drm_format_info pointer already available so we shouldn't have to perform a
new lookup. Some drm_fourcc functions also already operate on the
drm_format_info pointer for that reason, so the API is quite inconsistent
there.

Let's follow the latter pattern and remove the extra lookup while being a
bit more consistent. In order to be extra consistent, also rename that
function to drm_format_info_plane_cpp and to a static function in the
header to match the current policy.

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/32aa13e53dbc98a90207fd290aa8e79f785fb11e.1558002671.git-series.maxime.ripard@bootlin.com

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index a18da35145b7..8ad66aa1362a 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -36,7 +36,7 @@ static unsigned int clip_offset(struct drm_rect *clip,
 void drm_fb_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb,
 		   struct drm_rect *clip)
 {
-	unsigned int cpp = drm_format_plane_cpp(fb->format->format, 0);
+	unsigned int cpp = drm_format_info_plane_cpp(fb->format, 0);
 	size_t len = (clip->x2 - clip->x1) * cpp;
 	unsigned int y, lines = clip->y2 - clip->y1;
 
@@ -63,7 +63,7 @@ void drm_fb_memcpy_dstclip(void __iomem *dst, void *vaddr,
 			   struct drm_framebuffer *fb,
 			   struct drm_rect *clip)
 {
-	unsigned int cpp = drm_format_plane_cpp(fb->format->format, 0);
+	unsigned int cpp = drm_format_info_plane_cpp(fb->format, 0);
 	unsigned int offset = clip_offset(clip, fb->pitches[0], cpp);
 	size_t len = (clip->x2 - clip->x1) * cpp;
 	unsigned int y, lines = clip->y2 - clip->y1;